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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/arm/plat-samsung | |
parent | Initial commit. (diff) | |
download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/plat-samsung')
43 files changed, 7025 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig new file mode 100644 index 000000000..c83baa512 --- /dev/null +++ b/arch/arm/plat-samsung/Kconfig @@ -0,0 +1,308 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright 2009 Simtec Electronics + +config PLAT_SAMSUNG + bool + depends on PLAT_S3C24XX || ARCH_S3C64XX || ARCH_EXYNOS || ARCH_S5PV210 + default y + select GENERIC_IRQ_CHIP + select NO_IOPORT_MAP + help + Base platform code for all Samsung SoC based systems + +config SAMSUNG_PM + bool + depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX) + default y + help + Base platform power management code for samsung code + +if PLAT_SAMSUNG +menu "Samsung Common options" + +# boot configurations + +comment "Boot options" + +config S3C_LOWLEVEL_UART_PORT + int "S3C UART to use for low-level messages" + depends on ARCH_S3C64XX + default 0 + help + Choice of which UART port to use for the low-level messages, + such as the `Uncompressing...` at start time. The value of + this configuration should be between zero and two. The port + must have been initialised by the boot-loader before use. + +config SAMSUNG_ATAGS + def_bool n + depends on ATAGS + help + This option enables ATAGS based boot support code for + Samsung platforms, including static platform devices, legacy + clock, timer and interrupt initialization, etc. + + Platforms that support only DT based boot need not to select + this option. + +if SAMSUNG_ATAGS + +config S3C_GPIO_SPACE + int "Space between gpio banks" + default 0 + help + Add a number of spare GPIO entries between each bank for debugging + purposes. This allows any problems where an counter overflows from + one bank to another to be caught, at the expense of using a little + more memory. + +config S3C_GPIO_TRACK + bool + help + Internal configuration option to enable the s3c specific gpio + chip tracking if the platform requires it. + +# ADC driver + +config S3C_ADC + bool "ADC common driver support" + depends on !ARCH_MULTIPLATFORM + help + Core support for the ADC block found in the Samsung SoC systems + for drivers such as the touchscreen and hwmon to use to share + this resource. + +# device definitions to compile in + +config S3C_DEV_HSMMC + bool + help + Compile in platform device definitions for HSMMC code + +config S3C_DEV_HSMMC1 + bool + help + Compile in platform device definitions for HSMMC channel 1 + +config S3C_DEV_HSMMC2 + bool + help + Compile in platform device definitions for HSMMC channel 2 + +config S3C_DEV_HSMMC3 + bool + help + Compile in platform device definitions for HSMMC channel 3 + +config S3C_DEV_HWMON + bool + help + Compile in platform device definitions for HWMON + +config S3C_DEV_I2C1 + bool + help + Compile in platform device definitions for I2C channel 1 + +config S3C_DEV_I2C2 + bool + help + Compile in platform device definitions for I2C channel 2 + +config S3C_DEV_I2C3 + bool + help + Compile in platform device definition for I2C controller 3 + +config S3C_DEV_I2C4 + bool + help + Compile in platform device definition for I2C controller 4 + +config S3C_DEV_I2C5 + bool + help + Compile in platform device definition for I2C controller 5 + +config S3C_DEV_I2C6 + bool + help + Compile in platform device definition for I2C controller 6 + +config S3C_DEV_I2C7 + bool + help + Compile in platform device definition for I2C controller 7 + +config S3C_DEV_FB + bool + help + Compile in platform device definition for framebuffer + +config S3C_DEV_USB_HOST + bool + help + Compile in platform device definition for USB host. + +config S3C_DEV_USB_HSOTG + bool + help + Compile in platform device definition for USB high-speed OtG + +config S3C_DEV_WDT + bool + default y if ARCH_S3C24XX + help + Complie in platform device definition for Watchdog Timer + +config S3C_DEV_NAND + bool + help + Compile in platform device definition for NAND controller + +config S3C_DEV_ONENAND + bool + help + Compile in platform device definition for OneNAND controller + +config S3C_DEV_RTC + bool + help + Complie in platform device definition for RTC + +config SAMSUNG_DEV_ADC + bool + help + Compile in platform device definition for ADC controller + +config SAMSUNG_DEV_IDE + bool + help + Compile in platform device definitions for IDE + +config S3C64XX_DEV_SPI0 + bool + help + Compile in platform device definitions for S3C64XX's type + SPI controller 0 + +config S3C64XX_DEV_SPI1 + bool + help + Compile in platform device definitions for S3C64XX's type + SPI controller 1 + +config S3C64XX_DEV_SPI2 + bool + help + Compile in platform device definitions for S3C64XX's type + SPI controller 2 + +config SAMSUNG_DEV_TS + bool + help + Common in platform device definitions for touchscreen device + +config SAMSUNG_DEV_KEYPAD + bool + help + Compile in platform device definitions for keypad + +config SAMSUNG_DEV_PWM + bool + default y if ARCH_S3C24XX + help + Compile in platform device definition for PWM Timer + +config S3C24XX_PWM + bool "PWM device support" + select PWM + select PWM_SAMSUNG + help + Support for exporting the PWM timer blocks via the pwm device + system + +config GPIO_SAMSUNG + def_bool y + +config SAMSUNG_PM_GPIO + bool + default y if GPIO_SAMSUNG && PM + help + Include legacy GPIO power management code for platforms not using + pinctrl-samsung driver. +endif + +comment "Power management" + +config SAMSUNG_PM_DEBUG + bool "Samsung PM Suspend debug" + depends on PM && DEBUG_KERNEL + depends on DEBUG_EXYNOS_UART || DEBUG_S3C24XX_UART || DEBUG_S3C2410_UART + depends on DEBUG_LL && MMU + help + Say Y here if you want verbose debugging from the PM Suspend and + Resume code. See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt> + for more information. + +config S3C_PM_DEBUG_LED_SMDK + bool "SMDK LED suspend/resume debugging" + depends on PM && (MACH_SMDK6410) + help + Say Y here to enable the use of the SMDK LEDs on the baseboard + for debugging of the state of the suspend and resume process. + + Note, this currently only works for S3C64XX based SMDK boards. + +config SAMSUNG_PM_CHECK + bool "S3C2410 PM Suspend Memory CRC" + depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210) + select CRC32 + help + Enable the PM code's memory area checksum over sleep. This option + will generate CRCs of all blocks of memory, and store them before + going to sleep. The blocks are then checked on resume for any + errors. + + Note, this can take several seconds depending on memory size + and CPU speed. + + See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt> + +config SAMSUNG_PM_CHECK_CHUNKSIZE + int "S3C2410 PM Suspend CRC Chunksize (KiB)" + depends on PM && SAMSUNG_PM_CHECK + default 64 + help + Set the chunksize in Kilobytes of the CRC for checking memory + corruption over suspend and resume. A smaller value will mean that + the CRC data block will take more memory, but will identify any + faults with better precision. + + See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt> + +config SAMSUNG_WAKEMASK + bool + depends on PM + help + Compile support for wakeup-mask controls found on the S3C6400 + and above. This code allows a set of interrupt to wakeup-mask + mappings. See <plat/wakeup-mask.h> + +config SAMSUNG_WDT_RESET + bool + help + Compile support for system restart by triggering watchdog reset. + Used on SoCs that do not provide dedicated reset control. + +config DEBUG_S3C_UART + depends on PLAT_SAMSUNG + int + default "0" if DEBUG_S3C_UART0 + default "1" if DEBUG_S3C_UART1 + default "2" if DEBUG_S3C_UART2 + default "3" if DEBUG_S3C_UART3 + +endmenu +endif diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile new file mode 100644 index 000000000..3db9d2c38 --- /dev/null +++ b/arch/arm/plat-samsung/Makefile @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright 2009 Simtec Electronics + +ccflags-$(CONFIG_ARCH_S3C64XX) := -I$(srctree)/arch/arm/mach-s3c64xx/include +ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/$(src)/include + +# Objects we always build independent of SoC choice + +obj-y += init.o cpu.o + +# ADC + +obj-$(CONFIG_S3C_ADC) += adc.o + +# devices + +obj-$(CONFIG_SAMSUNG_ATAGS) += platformdata.o + +obj-$(CONFIG_SAMSUNG_ATAGS) += devs.o +obj-$(CONFIG_SAMSUNG_ATAGS) += dev-uart.o + +obj-$(CONFIG_GPIO_SAMSUNG) += gpio-samsung.o + +# PM support + +obj-$(CONFIG_PM_SLEEP) += pm-common.o +obj-$(CONFIG_EXYNOS_CPU_SUSPEND) += pm-common.o +obj-$(CONFIG_SAMSUNG_PM) += pm.o +obj-$(CONFIG_SAMSUNG_PM_GPIO) += pm-gpio.o +obj-$(CONFIG_SAMSUNG_PM_CHECK) += pm-check.o +obj-$(CONFIG_SAMSUNG_PM_DEBUG) += pm-debug.o + +obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o +obj-$(CONFIG_SAMSUNG_WDT_RESET) += watchdog-reset.o diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c new file mode 100644 index 000000000..ee3d5c989 --- /dev/null +++ b/arch/arm/plat-samsung/adc.c @@ -0,0 +1,514 @@ +// SPDX-License-Identifier: GPL-1.0+ +// +// Copyright (c) 2008 Simtec Electronics +// http://armlinux.simtec.co.uk/ +// Ben Dooks <ben@simtec.co.uk>, <ben-linux@fluff.org> +// +// Samsung ADC device core + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> +#include <linux/sched.h> +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/regulator/consumer.h> + +#include <plat/regs-adc.h> +#include <plat/adc.h> + +/* This driver is designed to control the usage of the ADC block between + * the touchscreen and any other drivers that may need to use it, such as + * the hwmon driver. + * + * Priority will be given to the touchscreen driver, but as this itself is + * rate limited it should not starve other requests which are processed in + * order that they are received. + * + * Each user registers to get a client block which uniquely identifies it + * and stores information such as the necessary functions to callback when + * action is required. + */ + +enum s3c_cpu_type { + TYPE_ADCV1, /* S3C24XX */ + TYPE_ADCV11, /* S3C2443 */ + TYPE_ADCV12, /* S3C2416, S3C2450 */ + TYPE_ADCV2, /* S3C64XX */ + TYPE_ADCV3, /* S5PV210, S5PC110, EXYNOS4210 */ +}; + +struct s3c_adc_client { + struct platform_device *pdev; + struct list_head pend; + wait_queue_head_t *wait; + + unsigned int nr_samples; + int result; + unsigned char is_ts; + unsigned char channel; + + void (*select_cb)(struct s3c_adc_client *c, unsigned selected); + void (*convert_cb)(struct s3c_adc_client *c, + unsigned val1, unsigned val2, + unsigned *samples_left); +}; + +struct adc_device { + struct platform_device *pdev; + struct platform_device *owner; + struct clk *clk; + struct s3c_adc_client *cur; + struct s3c_adc_client *ts_pend; + void __iomem *regs; + spinlock_t lock; + + unsigned int prescale; + + int irq; + struct regulator *vdd; +}; + +static struct adc_device *adc_dev; + +static LIST_HEAD(adc_pending); /* protected by adc_device.lock */ + +#define adc_dbg(_adc, msg...) dev_dbg(&(_adc)->pdev->dev, msg) + +static inline void s3c_adc_convert(struct adc_device *adc) +{ + unsigned con = readl(adc->regs + S3C2410_ADCCON); + + con |= S3C2410_ADCCON_ENABLE_START; + writel(con, adc->regs + S3C2410_ADCCON); +} + +static inline void s3c_adc_select(struct adc_device *adc, + struct s3c_adc_client *client) +{ + unsigned con = readl(adc->regs + S3C2410_ADCCON); + enum s3c_cpu_type cpu = platform_get_device_id(adc->pdev)->driver_data; + + client->select_cb(client, 1); + + if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV2) + con &= ~S3C2410_ADCCON_MUXMASK; + con &= ~S3C2410_ADCCON_STDBM; + con &= ~S3C2410_ADCCON_STARTMASK; + + if (!client->is_ts) { + if (cpu == TYPE_ADCV3) + writel(client->channel & 0xf, adc->regs + S5P_ADCMUX); + else if (cpu == TYPE_ADCV11 || cpu == TYPE_ADCV12) + writel(client->channel & 0xf, + adc->regs + S3C2443_ADCMUX); + else + con |= S3C2410_ADCCON_SELMUX(client->channel); + } + + writel(con, adc->regs + S3C2410_ADCCON); +} + +static void s3c_adc_dbgshow(struct adc_device *adc) +{ + adc_dbg(adc, "CON=%08x, TSC=%08x, DLY=%08x\n", + readl(adc->regs + S3C2410_ADCCON), + readl(adc->regs + S3C2410_ADCTSC), + readl(adc->regs + S3C2410_ADCDLY)); +} + +static void s3c_adc_try(struct adc_device *adc) +{ + struct s3c_adc_client *next = adc->ts_pend; + + if (!next && !list_empty(&adc_pending)) { + next = list_first_entry(&adc_pending, + struct s3c_adc_client, pend); + list_del(&next->pend); + } else + adc->ts_pend = NULL; + + if (next) { + adc_dbg(adc, "new client is %p\n", next); + adc->cur = next; + s3c_adc_select(adc, next); + s3c_adc_convert(adc); + s3c_adc_dbgshow(adc); + } +} + +int s3c_adc_start(struct s3c_adc_client *client, + unsigned int channel, unsigned int nr_samples) +{ + struct adc_device *adc = adc_dev; + unsigned long flags; + + if (!adc) { + printk(KERN_ERR "%s: failed to find adc\n", __func__); + return -EINVAL; + } + + spin_lock_irqsave(&adc->lock, flags); + + if (client->is_ts && adc->ts_pend) { + spin_unlock_irqrestore(&adc->lock, flags); + return -EAGAIN; + } + + client->channel = channel; + client->nr_samples = nr_samples; + + if (client->is_ts) + adc->ts_pend = client; + else + list_add_tail(&client->pend, &adc_pending); + + if (!adc->cur) + s3c_adc_try(adc); + + spin_unlock_irqrestore(&adc->lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(s3c_adc_start); + +static void s3c_convert_done(struct s3c_adc_client *client, + unsigned v, unsigned u, unsigned *left) +{ + client->result = v; + wake_up(client->wait); +} + +int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch) +{ + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wake); + int ret; + + client->convert_cb = s3c_convert_done; + client->wait = &wake; + client->result = -1; + + ret = s3c_adc_start(client, ch, 1); + if (ret < 0) + goto err; + + ret = wait_event_timeout(wake, client->result >= 0, HZ / 2); + if (client->result < 0) { + ret = -ETIMEDOUT; + goto err; + } + + client->convert_cb = NULL; + return client->result; + +err: + return ret; +} +EXPORT_SYMBOL_GPL(s3c_adc_read); + +static void s3c_adc_default_select(struct s3c_adc_client *client, + unsigned select) +{ +} + +struct s3c_adc_client *s3c_adc_register(struct platform_device *pdev, + void (*select)(struct s3c_adc_client *client, + unsigned int selected), + void (*conv)(struct s3c_adc_client *client, + unsigned d0, unsigned d1, + unsigned *samples_left), + unsigned int is_ts) +{ + struct s3c_adc_client *client; + + WARN_ON(!pdev); + + if (!select) + select = s3c_adc_default_select; + + if (!pdev) + return ERR_PTR(-EINVAL); + + client = kzalloc(sizeof(*client), GFP_KERNEL); + if (!client) + return ERR_PTR(-ENOMEM); + + client->pdev = pdev; + client->is_ts = is_ts; + client->select_cb = select; + client->convert_cb = conv; + + return client; +} +EXPORT_SYMBOL_GPL(s3c_adc_register); + +void s3c_adc_release(struct s3c_adc_client *client) +{ + unsigned long flags; + + spin_lock_irqsave(&adc_dev->lock, flags); + + /* We should really check that nothing is in progress. */ + if (adc_dev->cur == client) + adc_dev->cur = NULL; + if (adc_dev->ts_pend == client) + adc_dev->ts_pend = NULL; + else { + struct list_head *p, *n; + struct s3c_adc_client *tmp; + + list_for_each_safe(p, n, &adc_pending) { + tmp = list_entry(p, struct s3c_adc_client, pend); + if (tmp == client) + list_del(&tmp->pend); + } + } + + if (adc_dev->cur == NULL) + s3c_adc_try(adc_dev); + + spin_unlock_irqrestore(&adc_dev->lock, flags); + kfree(client); +} +EXPORT_SYMBOL_GPL(s3c_adc_release); + +static irqreturn_t s3c_adc_irq(int irq, void *pw) +{ + struct adc_device *adc = pw; + struct s3c_adc_client *client = adc->cur; + enum s3c_cpu_type cpu = platform_get_device_id(adc->pdev)->driver_data; + unsigned data0, data1; + + if (!client) { + dev_warn(&adc->pdev->dev, "%s: no adc pending\n", __func__); + goto exit; + } + + data0 = readl(adc->regs + S3C2410_ADCDAT0); + data1 = readl(adc->regs + S3C2410_ADCDAT1); + adc_dbg(adc, "read %d: 0x%04x, 0x%04x\n", client->nr_samples, data0, data1); + + client->nr_samples--; + + if (cpu == TYPE_ADCV1 || cpu == TYPE_ADCV11) { + data0 &= 0x3ff; + data1 &= 0x3ff; + } else { + /* S3C2416/S3C64XX/S5P ADC resolution is 12-bit */ + data0 &= 0xfff; + data1 &= 0xfff; + } + + if (client->convert_cb) + (client->convert_cb)(client, data0, data1, &client->nr_samples); + + if (client->nr_samples > 0) { + /* fire another conversion for this */ + + client->select_cb(client, 1); + s3c_adc_convert(adc); + } else { + spin_lock(&adc->lock); + (client->select_cb)(client, 0); + adc->cur = NULL; + + s3c_adc_try(adc); + spin_unlock(&adc->lock); + } + +exit: + if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) { + /* Clear ADC interrupt */ + writel(0, adc->regs + S3C64XX_ADCCLRINT); + } + return IRQ_HANDLED; +} + +static int s3c_adc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct adc_device *adc; + struct resource *regs; + enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data; + int ret; + unsigned tmp; + + adc = devm_kzalloc(dev, sizeof(*adc), GFP_KERNEL); + if (!adc) + return -ENOMEM; + + spin_lock_init(&adc->lock); + + adc->pdev = pdev; + adc->prescale = S3C2410_ADCCON_PRSCVL(49); + + adc->vdd = devm_regulator_get(dev, "vdd"); + if (IS_ERR(adc->vdd)) { + dev_err(dev, "operating without regulator \"vdd\" .\n"); + return PTR_ERR(adc->vdd); + } + + adc->irq = platform_get_irq(pdev, 1); + if (adc->irq <= 0) { + dev_err(dev, "failed to get adc irq\n"); + return -ENOENT; + } + + ret = devm_request_irq(dev, adc->irq, s3c_adc_irq, 0, dev_name(dev), + adc); + if (ret < 0) { + dev_err(dev, "failed to attach adc irq\n"); + return ret; + } + + adc->clk = devm_clk_get(dev, "adc"); + if (IS_ERR(adc->clk)) { + dev_err(dev, "failed to get adc clock\n"); + return PTR_ERR(adc->clk); + } + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + adc->regs = devm_ioremap_resource(dev, regs); + if (IS_ERR(adc->regs)) + return PTR_ERR(adc->regs); + + ret = regulator_enable(adc->vdd); + if (ret) + return ret; + + clk_prepare_enable(adc->clk); + + tmp = adc->prescale | S3C2410_ADCCON_PRSCEN; + + /* Enable 12-bit ADC resolution */ + if (cpu == TYPE_ADCV12) + tmp |= S3C2416_ADCCON_RESSEL; + if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) + tmp |= S3C64XX_ADCCON_RESSEL; + + writel(tmp, adc->regs + S3C2410_ADCCON); + + dev_info(dev, "attached adc driver\n"); + + platform_set_drvdata(pdev, adc); + adc_dev = adc; + + return 0; +} + +static int s3c_adc_remove(struct platform_device *pdev) +{ + struct adc_device *adc = platform_get_drvdata(pdev); + + clk_disable_unprepare(adc->clk); + regulator_disable(adc->vdd); + + return 0; +} + +#ifdef CONFIG_PM +static int s3c_adc_suspend(struct device *dev) +{ + struct adc_device *adc = dev_get_drvdata(dev); + unsigned long flags; + u32 con; + + spin_lock_irqsave(&adc->lock, flags); + + con = readl(adc->regs + S3C2410_ADCCON); + con |= S3C2410_ADCCON_STDBM; + writel(con, adc->regs + S3C2410_ADCCON); + + disable_irq(adc->irq); + spin_unlock_irqrestore(&adc->lock, flags); + clk_disable(adc->clk); + regulator_disable(adc->vdd); + + return 0; +} + +static int s3c_adc_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct adc_device *adc = platform_get_drvdata(pdev); + enum s3c_cpu_type cpu = platform_get_device_id(pdev)->driver_data; + int ret; + unsigned long tmp; + + ret = regulator_enable(adc->vdd); + if (ret) + return ret; + clk_enable(adc->clk); + enable_irq(adc->irq); + + tmp = adc->prescale | S3C2410_ADCCON_PRSCEN; + + /* Enable 12-bit ADC resolution */ + if (cpu == TYPE_ADCV12) + tmp |= S3C2416_ADCCON_RESSEL; + if (cpu == TYPE_ADCV2 || cpu == TYPE_ADCV3) + tmp |= S3C64XX_ADCCON_RESSEL; + + writel(tmp, adc->regs + S3C2410_ADCCON); + + return 0; +} + +#else +#define s3c_adc_suspend NULL +#define s3c_adc_resume NULL +#endif + +static const struct platform_device_id s3c_adc_driver_ids[] = { + { + .name = "s3c24xx-adc", + .driver_data = TYPE_ADCV1, + }, { + .name = "s3c2443-adc", + .driver_data = TYPE_ADCV11, + }, { + .name = "s3c2416-adc", + .driver_data = TYPE_ADCV12, + }, { + .name = "s3c64xx-adc", + .driver_data = TYPE_ADCV2, + }, { + .name = "samsung-adc-v3", + .driver_data = TYPE_ADCV3, + }, + { } +}; +MODULE_DEVICE_TABLE(platform, s3c_adc_driver_ids); + +static const struct dev_pm_ops adc_pm_ops = { + .suspend = s3c_adc_suspend, + .resume = s3c_adc_resume, +}; + +static struct platform_driver s3c_adc_driver = { + .id_table = s3c_adc_driver_ids, + .driver = { + .name = "s3c-adc", + .pm = &adc_pm_ops, + }, + .probe = s3c_adc_probe, + .remove = s3c_adc_remove, +}; + +static int __init adc_init(void) +{ + int ret; + + ret = platform_driver_register(&s3c_adc_driver); + if (ret) + printk(KERN_ERR "%s: failed to add adc driver\n", __func__); + + return ret; +} + +module_init(adc_init); diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c new file mode 100644 index 000000000..e1ba88ba3 --- /dev/null +++ b/arch/arm/plat-samsung/cpu.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2009-2011 Samsung Electronics Co., Ltd. +// http://www.samsung.com +// +// Samsung CPU Support + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> + +#include <plat/map-base.h> +#include <plat/cpu.h> + +unsigned long samsung_cpu_id; +static unsigned int samsung_cpu_rev; + +unsigned int samsung_rev(void) +{ + return samsung_cpu_rev; +} +EXPORT_SYMBOL(samsung_rev); + +void __init s3c64xx_init_cpu(void) +{ + samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0x118); + if (!samsung_cpu_id) { + /* + * S3C6400 has the ID register in a different place, + * and needs a write before it can be read. + */ + writel_relaxed(0x0, S3C_VA_SYS + 0xA1C); + samsung_cpu_id = readl_relaxed(S3C_VA_SYS + 0xA1C); + } + + samsung_cpu_rev = 0; + + pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id); +} + +void __init s5p_init_cpu(const void __iomem *cpuid_addr) +{ + samsung_cpu_id = readl_relaxed(cpuid_addr); + samsung_cpu_rev = samsung_cpu_id & 0xFF; + + pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id); +} diff --git a/arch/arm/plat-samsung/dev-uart.c b/arch/arm/plat-samsung/dev-uart.c new file mode 100644 index 000000000..7476a5dba --- /dev/null +++ b/arch/arm/plat-samsung/dev-uart.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// originally from arch/arm/plat-s3c24xx/devs.c +// +// Copyright (c) 2004 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// +// Base S3C24XX platform device definitions + +#include <linux/kernel.h> +#include <linux/platform_device.h> + +#include <plat/devs.h> + +/* uart devices */ + +static struct platform_device s3c24xx_uart_device0 = { + .id = 0, +}; + +static struct platform_device s3c24xx_uart_device1 = { + .id = 1, +}; + +static struct platform_device s3c24xx_uart_device2 = { + .id = 2, +}; + +static struct platform_device s3c24xx_uart_device3 = { + .id = 3, +}; + +struct platform_device *s3c24xx_uart_src[4] = { + &s3c24xx_uart_device0, + &s3c24xx_uart_device1, + &s3c24xx_uart_device2, + &s3c24xx_uart_device3, +}; + +struct platform_device *s3c24xx_uart_devs[4] = { +}; diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c new file mode 100644 index 000000000..1d1fa068d --- /dev/null +++ b/arch/arm/plat-samsung/devs.c @@ -0,0 +1,1166 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2011 Samsung Electronics Co., Ltd. +// http://www.samsung.com +// +// Base SAMSUNG platform device definitions + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/dma-mapping.h> +#include <linux/fb.h> +#include <linux/gfp.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/onenand.h> +#include <linux/mtd/partitions.h> +#include <linux/mmc/host.h> +#include <linux/ioport.h> +#include <linux/sizes.h> +#include <linux/platform_data/s3c-hsudc.h> +#include <linux/platform_data/s3c-hsotg.h> +#include <linux/platform_data/dma-s3c24xx.h> + +#include <linux/platform_data/media/s5p_hdmi.h> + +#include <asm/irq.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <mach/dma.h> +#include <mach/irqs.h> +#include <mach/map.h> + +#include <plat/cpu.h> +#include <plat/devs.h> +#include <plat/adc.h> +#include <linux/platform_data/ata-samsung_cf.h> +#include <plat/fb.h> +#include <plat/fb-s3c2410.h> +#include <linux/platform_data/hwmon-s3c.h> +#include <linux/platform_data/i2c-s3c2410.h> +#include <plat/keypad.h> +#include <linux/platform_data/mmc-s3cmci.h> +#include <linux/platform_data/mtd-nand-s3c2410.h> +#include <plat/pwm-core.h> +#include <plat/sdhci.h> +#include <linux/platform_data/touchscreen-s3c2410.h> +#include <linux/platform_data/usb-s3c2410_udc.h> +#include <linux/platform_data/usb-ohci-s3c2410.h> +#include <plat/usb-phy.h> +#include <plat/regs-spi.h> +#include <linux/platform_data/asoc-s3c.h> +#include <linux/platform_data/spi-s3c64xx.h> + +#define samsung_device_dma_mask (*((u64[]) { DMA_BIT_MASK(32) })) + +/* AC97 */ +#ifdef CONFIG_CPU_S3C2440 +static struct resource s3c_ac97_resource[] = { + [0] = DEFINE_RES_MEM(S3C2440_PA_AC97, S3C2440_SZ_AC97), + [1] = DEFINE_RES_IRQ(IRQ_S3C244X_AC97), +}; + +struct platform_device s3c_device_ac97 = { + .name = "samsung-ac97", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_ac97_resource), + .resource = s3c_ac97_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; +#endif /* CONFIG_CPU_S3C2440 */ + +/* ADC */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_adc_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_ADC, S3C24XX_SZ_ADC), + [1] = DEFINE_RES_IRQ(IRQ_TC), + [2] = DEFINE_RES_IRQ(IRQ_ADC), +}; + +struct platform_device s3c_device_adc = { + .name = "s3c24xx-adc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_adc_resource), + .resource = s3c_adc_resource, +}; +#endif /* CONFIG_PLAT_S3C24XX */ + +#if defined(CONFIG_SAMSUNG_DEV_ADC) +static struct resource s3c_adc_resource[] = { + [0] = DEFINE_RES_MEM(SAMSUNG_PA_ADC, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_ADC), + [2] = DEFINE_RES_IRQ(IRQ_TC), +}; + +struct platform_device s3c_device_adc = { + .name = "exynos-adc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_adc_resource), + .resource = s3c_adc_resource, +}; +#endif /* CONFIG_SAMSUNG_DEV_ADC */ + +/* Camif Controller */ + +#ifdef CONFIG_CPU_S3C2440 +static struct resource s3c_camif_resource[] = { + [0] = DEFINE_RES_MEM(S3C2440_PA_CAMIF, S3C2440_SZ_CAMIF), + [1] = DEFINE_RES_IRQ(IRQ_S3C2440_CAM_C), + [2] = DEFINE_RES_IRQ(IRQ_S3C2440_CAM_P), +}; + +struct platform_device s3c_device_camif = { + .name = "s3c2440-camif", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_camif_resource), + .resource = s3c_camif_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; +#endif /* CONFIG_CPU_S3C2440 */ + +/* FB */ + +#ifdef CONFIG_S3C_DEV_FB +static struct resource s3c_fb_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_FB, SZ_16K), + [1] = DEFINE_RES_IRQ(IRQ_LCD_VSYNC), + [2] = DEFINE_RES_IRQ(IRQ_LCD_FIFO), + [3] = DEFINE_RES_IRQ(IRQ_LCD_SYSTEM), +}; + +struct platform_device s3c_device_fb = { + .name = "s3c-fb", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_fb_resource), + .resource = s3c_fb_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c_fb_set_platdata(struct s3c_fb_platdata *pd) +{ + s3c_set_platdata(pd, sizeof(struct s3c_fb_platdata), + &s3c_device_fb); +} +#endif /* CONFIG_S3C_DEV_FB */ + +/* HWMON */ + +#ifdef CONFIG_S3C_DEV_HWMON +struct platform_device s3c_device_hwmon = { + .name = "s3c-hwmon", + .id = -1, + .dev.parent = &s3c_device_adc.dev, +}; + +void __init s3c_hwmon_set_platdata(struct s3c_hwmon_pdata *pd) +{ + s3c_set_platdata(pd, sizeof(struct s3c_hwmon_pdata), + &s3c_device_hwmon); +} +#endif /* CONFIG_S3C_DEV_HWMON */ + +/* HSMMC */ + +#ifdef CONFIG_S3C_DEV_HSMMC +static struct resource s3c_hsmmc_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_HSMMC0, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_HSMMC0), +}; + +struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata = { + .max_width = 4, + .host_caps = (MMC_CAP_4_BIT_DATA | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED), +}; + +struct platform_device s3c_device_hsmmc0 = { + .name = "s3c-sdhci", + .id = 0, + .num_resources = ARRAY_SIZE(s3c_hsmmc_resource), + .resource = s3c_hsmmc_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &s3c_hsmmc0_def_platdata, + }, +}; + +void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd) +{ + s3c_sdhci_set_platdata(pd, &s3c_hsmmc0_def_platdata); +} +#endif /* CONFIG_S3C_DEV_HSMMC */ + +#ifdef CONFIG_S3C_DEV_HSMMC1 +static struct resource s3c_hsmmc1_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_HSMMC1, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_HSMMC1), +}; + +struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata = { + .max_width = 4, + .host_caps = (MMC_CAP_4_BIT_DATA | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED), +}; + +struct platform_device s3c_device_hsmmc1 = { + .name = "s3c-sdhci", + .id = 1, + .num_resources = ARRAY_SIZE(s3c_hsmmc1_resource), + .resource = s3c_hsmmc1_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &s3c_hsmmc1_def_platdata, + }, +}; + +void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd) +{ + s3c_sdhci_set_platdata(pd, &s3c_hsmmc1_def_platdata); +} +#endif /* CONFIG_S3C_DEV_HSMMC1 */ + +/* HSMMC2 */ + +#ifdef CONFIG_S3C_DEV_HSMMC2 +static struct resource s3c_hsmmc2_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_HSMMC2, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_HSMMC2), +}; + +struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata = { + .max_width = 4, + .host_caps = (MMC_CAP_4_BIT_DATA | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED), +}; + +struct platform_device s3c_device_hsmmc2 = { + .name = "s3c-sdhci", + .id = 2, + .num_resources = ARRAY_SIZE(s3c_hsmmc2_resource), + .resource = s3c_hsmmc2_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &s3c_hsmmc2_def_platdata, + }, +}; + +void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd) +{ + s3c_sdhci_set_platdata(pd, &s3c_hsmmc2_def_platdata); +} +#endif /* CONFIG_S3C_DEV_HSMMC2 */ + +#ifdef CONFIG_S3C_DEV_HSMMC3 +static struct resource s3c_hsmmc3_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_HSMMC3, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_HSMMC3), +}; + +struct s3c_sdhci_platdata s3c_hsmmc3_def_platdata = { + .max_width = 4, + .host_caps = (MMC_CAP_4_BIT_DATA | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED), +}; + +struct platform_device s3c_device_hsmmc3 = { + .name = "s3c-sdhci", + .id = 3, + .num_resources = ARRAY_SIZE(s3c_hsmmc3_resource), + .resource = s3c_hsmmc3_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &s3c_hsmmc3_def_platdata, + }, +}; + +void s3c_sdhci3_set_platdata(struct s3c_sdhci_platdata *pd) +{ + s3c_sdhci_set_platdata(pd, &s3c_hsmmc3_def_platdata); +} +#endif /* CONFIG_S3C_DEV_HSMMC3 */ + +/* I2C */ + +static struct resource s3c_i2c0_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC), +}; + +struct platform_device s3c_device_i2c0 = { + .name = "s3c2410-i2c", + .id = 0, + .num_resources = ARRAY_SIZE(s3c_i2c0_resource), + .resource = s3c_i2c0_resource, +}; + +struct s3c2410_platform_i2c default_i2c_data __initdata = { + .flags = 0, + .slave_addr = 0x10, + .frequency = 100*1000, + .sda_delay = 100, +}; + +void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 0; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c0); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c0_cfg_gpio; +} + +#ifdef CONFIG_S3C_DEV_I2C1 +static struct resource s3c_i2c1_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC1, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC1), +}; + +struct platform_device s3c_device_i2c1 = { + .name = "s3c2410-i2c", + .id = 1, + .num_resources = ARRAY_SIZE(s3c_i2c1_resource), + .resource = s3c_i2c1_resource, +}; + +void __init s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 1; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c1); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c1_cfg_gpio; +} +#endif /* CONFIG_S3C_DEV_I2C1 */ + +#ifdef CONFIG_S3C_DEV_I2C2 +static struct resource s3c_i2c2_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC2, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC2), +}; + +struct platform_device s3c_device_i2c2 = { + .name = "s3c2410-i2c", + .id = 2, + .num_resources = ARRAY_SIZE(s3c_i2c2_resource), + .resource = s3c_i2c2_resource, +}; + +void __init s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 2; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c2); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c2_cfg_gpio; +} +#endif /* CONFIG_S3C_DEV_I2C2 */ + +#ifdef CONFIG_S3C_DEV_I2C3 +static struct resource s3c_i2c3_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC3, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC3), +}; + +struct platform_device s3c_device_i2c3 = { + .name = "s3c2440-i2c", + .id = 3, + .num_resources = ARRAY_SIZE(s3c_i2c3_resource), + .resource = s3c_i2c3_resource, +}; + +void __init s3c_i2c3_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 3; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c3); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c3_cfg_gpio; +} +#endif /*CONFIG_S3C_DEV_I2C3 */ + +#ifdef CONFIG_S3C_DEV_I2C4 +static struct resource s3c_i2c4_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC4, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC4), +}; + +struct platform_device s3c_device_i2c4 = { + .name = "s3c2440-i2c", + .id = 4, + .num_resources = ARRAY_SIZE(s3c_i2c4_resource), + .resource = s3c_i2c4_resource, +}; + +void __init s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 4; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c4); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c4_cfg_gpio; +} +#endif /*CONFIG_S3C_DEV_I2C4 */ + +#ifdef CONFIG_S3C_DEV_I2C5 +static struct resource s3c_i2c5_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC5, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC5), +}; + +struct platform_device s3c_device_i2c5 = { + .name = "s3c2440-i2c", + .id = 5, + .num_resources = ARRAY_SIZE(s3c_i2c5_resource), + .resource = s3c_i2c5_resource, +}; + +void __init s3c_i2c5_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 5; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c5); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c5_cfg_gpio; +} +#endif /*CONFIG_S3C_DEV_I2C5 */ + +#ifdef CONFIG_S3C_DEV_I2C6 +static struct resource s3c_i2c6_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC6, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC6), +}; + +struct platform_device s3c_device_i2c6 = { + .name = "s3c2440-i2c", + .id = 6, + .num_resources = ARRAY_SIZE(s3c_i2c6_resource), + .resource = s3c_i2c6_resource, +}; + +void __init s3c_i2c6_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 6; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c6); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c6_cfg_gpio; +} +#endif /* CONFIG_S3C_DEV_I2C6 */ + +#ifdef CONFIG_S3C_DEV_I2C7 +static struct resource s3c_i2c7_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_IIC7, SZ_4K), + [1] = DEFINE_RES_IRQ(IRQ_IIC7), +}; + +struct platform_device s3c_device_i2c7 = { + .name = "s3c2440-i2c", + .id = 7, + .num_resources = ARRAY_SIZE(s3c_i2c7_resource), + .resource = s3c_i2c7_resource, +}; + +void __init s3c_i2c7_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) { + pd = &default_i2c_data; + pd->bus_num = 7; + } + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_i2c7); + + if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c7_cfg_gpio; +} +#endif /* CONFIG_S3C_DEV_I2C7 */ + +/* I2S */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_iis_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_IIS, S3C24XX_SZ_IIS), +}; + +struct platform_device s3c_device_iis = { + .name = "s3c24xx-iis", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_iis_resource), + .resource = s3c_iis_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; +#endif /* CONFIG_PLAT_S3C24XX */ + +/* IDE CFCON */ + +#ifdef CONFIG_SAMSUNG_DEV_IDE +static struct resource s3c_cfcon_resource[] = { + [0] = DEFINE_RES_MEM(SAMSUNG_PA_CFCON, SZ_16K), + [1] = DEFINE_RES_IRQ(IRQ_CFCON), +}; + +struct platform_device s3c_device_cfcon = { + .id = 0, + .num_resources = ARRAY_SIZE(s3c_cfcon_resource), + .resource = s3c_cfcon_resource, +}; + +void __init s3c_ide_set_platdata(struct s3c_ide_platdata *pdata) +{ + s3c_set_platdata(pdata, sizeof(struct s3c_ide_platdata), + &s3c_device_cfcon); +} +#endif /* CONFIG_SAMSUNG_DEV_IDE */ + +/* KEYPAD */ + +#ifdef CONFIG_SAMSUNG_DEV_KEYPAD +static struct resource samsung_keypad_resources[] = { + [0] = DEFINE_RES_MEM(SAMSUNG_PA_KEYPAD, SZ_32), + [1] = DEFINE_RES_IRQ(IRQ_KEYPAD), +}; + +struct platform_device samsung_device_keypad = { + .name = "samsung-keypad", + .id = -1, + .num_resources = ARRAY_SIZE(samsung_keypad_resources), + .resource = samsung_keypad_resources, +}; + +void __init samsung_keypad_set_platdata(struct samsung_keypad_platdata *pd) +{ + struct samsung_keypad_platdata *npd; + + npd = s3c_set_platdata(pd, sizeof(*npd), &samsung_device_keypad); + + if (!npd->cfg_gpio) + npd->cfg_gpio = samsung_keypad_cfg_gpio; +} +#endif /* CONFIG_SAMSUNG_DEV_KEYPAD */ + +/* LCD Controller */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_lcd_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_LCD, S3C24XX_SZ_LCD), + [1] = DEFINE_RES_IRQ(IRQ_LCD), +}; + +struct platform_device s3c_device_lcd = { + .name = "s3c2410-lcd", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_lcd_resource), + .resource = s3c_lcd_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; + +void __init s3c24xx_fb_set_platdata(struct s3c2410fb_mach_info *pd) +{ + struct s3c2410fb_mach_info *npd; + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_lcd); + if (npd) { + npd->displays = kmemdup(pd->displays, + sizeof(struct s3c2410fb_display) * npd->num_displays, + GFP_KERNEL); + if (!npd->displays) + printk(KERN_ERR "no memory for LCD display data\n"); + } else { + printk(KERN_ERR "no memory for LCD platform data\n"); + } +} +#endif /* CONFIG_PLAT_S3C24XX */ + +/* NAND */ + +#ifdef CONFIG_S3C_DEV_NAND +static struct resource s3c_nand_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_NAND, SZ_1M), +}; + +struct platform_device s3c_device_nand = { + .name = "s3c2410-nand", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_nand_resource), + .resource = s3c_nand_resource, +}; + +/* + * s3c_nand_copy_set() - copy nand set data + * @set: The new structure, directly copied from the old. + * + * Copy all the fields from the NAND set field from what is probably __initdata + * to new kernel memory. The code returns 0 if the copy happened correctly or + * an error code for the calling function to display. + * + * Note, we currently do not try and look to see if we've already copied the + * data in a previous set. + */ +static int __init s3c_nand_copy_set(struct s3c2410_nand_set *set) +{ + void *ptr; + int size; + + size = sizeof(struct mtd_partition) * set->nr_partitions; + if (size) { + ptr = kmemdup(set->partitions, size, GFP_KERNEL); + set->partitions = ptr; + + if (!ptr) + return -ENOMEM; + } + + if (set->nr_map && set->nr_chips) { + size = sizeof(int) * set->nr_chips; + ptr = kmemdup(set->nr_map, size, GFP_KERNEL); + set->nr_map = ptr; + + if (!ptr) + return -ENOMEM; + } + + return 0; +} + +void __init s3c_nand_set_platdata(struct s3c2410_platform_nand *nand) +{ + struct s3c2410_platform_nand *npd; + int size; + int ret; + + /* note, if we get a failure in allocation, we simply drop out of the + * function. If there is so little memory available at initialisation + * time then there is little chance the system is going to run. + */ + + npd = s3c_set_platdata(nand, sizeof(*npd), &s3c_device_nand); + if (!npd) + return; + + /* now see if we need to copy any of the nand set data */ + + size = sizeof(struct s3c2410_nand_set) * npd->nr_sets; + if (size) { + struct s3c2410_nand_set *from = npd->sets; + struct s3c2410_nand_set *to; + int i; + + to = kmemdup(from, size, GFP_KERNEL); + npd->sets = to; /* set, even if we failed */ + + if (!to) { + printk(KERN_ERR "%s: no memory for sets\n", __func__); + return; + } + + for (i = 0; i < npd->nr_sets; i++) { + ret = s3c_nand_copy_set(to); + if (ret) { + printk(KERN_ERR "%s: failed to copy set %d\n", + __func__, i); + return; + } + to++; + } + } +} +#endif /* CONFIG_S3C_DEV_NAND */ + +/* ONENAND */ + +#ifdef CONFIG_S3C_DEV_ONENAND +static struct resource s3c_onenand_resources[] = { + [0] = DEFINE_RES_MEM(S3C_PA_ONENAND, SZ_1K), + [1] = DEFINE_RES_MEM(S3C_PA_ONENAND_BUF, S3C_SZ_ONENAND_BUF), + [2] = DEFINE_RES_IRQ(IRQ_ONENAND), +}; + +struct platform_device s3c_device_onenand = { + .name = "samsung-onenand", + .id = 0, + .num_resources = ARRAY_SIZE(s3c_onenand_resources), + .resource = s3c_onenand_resources, +}; +#endif /* CONFIG_S3C_DEV_ONENAND */ + +#ifdef CONFIG_S3C64XX_DEV_ONENAND1 +static struct resource s3c64xx_onenand1_resources[] = { + [0] = DEFINE_RES_MEM(S3C64XX_PA_ONENAND1, SZ_1K), + [1] = DEFINE_RES_MEM(S3C64XX_PA_ONENAND1_BUF, S3C64XX_SZ_ONENAND1_BUF), + [2] = DEFINE_RES_IRQ(IRQ_ONENAND1), +}; + +struct platform_device s3c64xx_device_onenand1 = { + .name = "samsung-onenand", + .id = 1, + .num_resources = ARRAY_SIZE(s3c64xx_onenand1_resources), + .resource = s3c64xx_onenand1_resources, +}; + +void __init s3c64xx_onenand1_set_platdata(struct onenand_platform_data *pdata) +{ + s3c_set_platdata(pdata, sizeof(struct onenand_platform_data), + &s3c64xx_device_onenand1); +} +#endif /* CONFIG_S3C64XX_DEV_ONENAND1 */ + +/* PWM Timer */ + +#ifdef CONFIG_SAMSUNG_DEV_PWM +static struct resource samsung_pwm_resource[] = { + DEFINE_RES_MEM(SAMSUNG_PA_TIMER, SZ_4K), +}; + +struct platform_device samsung_device_pwm = { + .name = "samsung-pwm", + .id = -1, + .num_resources = ARRAY_SIZE(samsung_pwm_resource), + .resource = samsung_pwm_resource, +}; + +void __init samsung_pwm_set_platdata(struct samsung_pwm_variant *pd) +{ + samsung_device_pwm.dev.platform_data = pd; +} +#endif /* CONFIG_SAMSUNG_DEV_PWM */ + +/* RTC */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_rtc_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_RTC, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_RTC), + [2] = DEFINE_RES_IRQ(IRQ_TICK), +}; + +struct platform_device s3c_device_rtc = { + .name = "s3c2410-rtc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_rtc_resource), + .resource = s3c_rtc_resource, +}; +#endif /* CONFIG_PLAT_S3C24XX */ + +#ifdef CONFIG_S3C_DEV_RTC +static struct resource s3c_rtc_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_RTC, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_RTC_ALARM), + [2] = DEFINE_RES_IRQ(IRQ_RTC_TIC), +}; + +struct platform_device s3c_device_rtc = { + .name = "s3c64xx-rtc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_rtc_resource), + .resource = s3c_rtc_resource, +}; +#endif /* CONFIG_S3C_DEV_RTC */ + +/* SDI */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_sdi_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_SDI, S3C24XX_SZ_SDI), + [1] = DEFINE_RES_IRQ(IRQ_SDI), +}; + +struct platform_device s3c_device_sdi = { + .name = "s3c2410-sdi", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_sdi_resource), + .resource = s3c_sdi_resource, +}; + +void __init s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata) +{ + s3c_set_platdata(pdata, sizeof(struct s3c24xx_mci_pdata), + &s3c_device_sdi); +} +#endif /* CONFIG_PLAT_S3C24XX */ + +/* SPI */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_spi0_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_SPI, SZ_32), + [1] = DEFINE_RES_IRQ(IRQ_SPI0), +}; + +struct platform_device s3c_device_spi0 = { + .name = "s3c2410-spi", + .id = 0, + .num_resources = ARRAY_SIZE(s3c_spi0_resource), + .resource = s3c_spi0_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; + +static struct resource s3c_spi1_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_SPI1, SZ_32), + [1] = DEFINE_RES_IRQ(IRQ_SPI1), +}; + +struct platform_device s3c_device_spi1 = { + .name = "s3c2410-spi", + .id = 1, + .num_resources = ARRAY_SIZE(s3c_spi1_resource), + .resource = s3c_spi1_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; +#endif /* CONFIG_PLAT_S3C24XX */ + +/* Touchscreen */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_ts_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_ADC, S3C24XX_SZ_ADC), + [1] = DEFINE_RES_IRQ(IRQ_TC), +}; + +struct platform_device s3c_device_ts = { + .name = "s3c2410-ts", + .id = -1, + .dev.parent = &s3c_device_adc.dev, + .num_resources = ARRAY_SIZE(s3c_ts_resource), + .resource = s3c_ts_resource, +}; + +void __init s3c24xx_ts_set_platdata(struct s3c2410_ts_mach_info *hard_s3c2410ts_info) +{ + s3c_set_platdata(hard_s3c2410ts_info, + sizeof(struct s3c2410_ts_mach_info), &s3c_device_ts); +} +#endif /* CONFIG_PLAT_S3C24XX */ + +#ifdef CONFIG_SAMSUNG_DEV_TS +static struct s3c2410_ts_mach_info default_ts_data __initdata = { + .delay = 10000, + .presc = 49, + .oversampling_shift = 2, +}; + +void __init s3c64xx_ts_set_platdata(struct s3c2410_ts_mach_info *pd) +{ + if (!pd) + pd = &default_ts_data; + + s3c_set_platdata(pd, sizeof(struct s3c2410_ts_mach_info), + &s3c_device_adc); +} +#endif /* CONFIG_SAMSUNG_DEV_TS */ + +/* USB */ + +#ifdef CONFIG_S3C_DEV_USB_HOST +static struct resource s3c_usb_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_USBHOST, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_USBH), +}; + +struct platform_device s3c_device_ohci = { + .name = "s3c2410-ohci", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_usb_resource), + .resource = s3c_usb_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + } +}; + +/* + * s3c_ohci_set_platdata - initialise OHCI device platform data + * @info: The platform data. + * + * This call copies the @info passed in and sets the device .platform_data + * field to that copy. The @info is copied so that the original can be marked + * __initdata. + */ + +void __init s3c_ohci_set_platdata(struct s3c2410_hcd_info *info) +{ + s3c_set_platdata(info, sizeof(struct s3c2410_hcd_info), + &s3c_device_ohci); +} +#endif /* CONFIG_S3C_DEV_USB_HOST */ + +/* USB Device (Gadget) */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_usbgadget_resource[] = { + [0] = DEFINE_RES_MEM(S3C24XX_PA_USBDEV, S3C24XX_SZ_USBDEV), + [1] = DEFINE_RES_IRQ(IRQ_USBD), +}; + +struct platform_device s3c_device_usbgadget = { + .name = "s3c2410-usbgadget", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_usbgadget_resource), + .resource = s3c_usbgadget_resource, +}; + +void __init s3c24xx_udc_set_platdata(struct s3c2410_udc_mach_info *pd) +{ + s3c_set_platdata(pd, sizeof(*pd), &s3c_device_usbgadget); +} +#endif /* CONFIG_PLAT_S3C24XX */ + +/* USB HSOTG */ + +#ifdef CONFIG_S3C_DEV_USB_HSOTG +static struct resource s3c_usb_hsotg_resources[] = { + [0] = DEFINE_RES_MEM(S3C_PA_USB_HSOTG, SZ_128K), + [1] = DEFINE_RES_IRQ(IRQ_OTG), +}; + +struct platform_device s3c_device_usb_hsotg = { + .name = "s3c-hsotg", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_usb_hsotg_resources), + .resource = s3c_usb_hsotg_resources, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init dwc2_hsotg_set_platdata(struct dwc2_hsotg_plat *pd) +{ + struct dwc2_hsotg_plat *npd; + + npd = s3c_set_platdata(pd, sizeof(*npd), &s3c_device_usb_hsotg); + + if (!npd->phy_init) + npd->phy_init = s5p_usb_phy_init; + if (!npd->phy_exit) + npd->phy_exit = s5p_usb_phy_exit; +} +#endif /* CONFIG_S3C_DEV_USB_HSOTG */ + +/* USB High Spped 2.0 Device (Gadget) */ + +#ifdef CONFIG_PLAT_S3C24XX +static struct resource s3c_hsudc_resource[] = { + [0] = DEFINE_RES_MEM(S3C2416_PA_HSUDC, S3C2416_SZ_HSUDC), + [1] = DEFINE_RES_IRQ(IRQ_USBD), +}; + +struct platform_device s3c_device_usb_hsudc = { + .name = "s3c-hsudc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_hsudc_resource), + .resource = s3c_hsudc_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c24xx_hsudc_set_platdata(struct s3c24xx_hsudc_platdata *pd) +{ + s3c_set_platdata(pd, sizeof(*pd), &s3c_device_usb_hsudc); +} +#endif /* CONFIG_PLAT_S3C24XX */ + +/* WDT */ + +#ifdef CONFIG_S3C_DEV_WDT +static struct resource s3c_wdt_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_WDT, SZ_1K), + [1] = DEFINE_RES_IRQ(IRQ_WDT), +}; + +struct platform_device s3c_device_wdt = { + .name = "s3c2410-wdt", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_wdt_resource), + .resource = s3c_wdt_resource, +}; +#endif /* CONFIG_S3C_DEV_WDT */ + +#ifdef CONFIG_S3C64XX_DEV_SPI0 +static struct resource s3c64xx_spi0_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_SPI0, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_SPI0), +}; + +struct platform_device s3c64xx_device_spi0 = { + .name = "s3c6410-spi", + .id = 0, + .num_resources = ARRAY_SIZE(s3c64xx_spi0_resource), + .resource = s3c64xx_spi0_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, + int num_cs) +{ + struct s3c64xx_spi_info pd; + + /* Reject invalid configuration */ + if (!num_cs || src_clk_nr < 0) { + pr_err("%s: Invalid SPI configuration\n", __func__); + return; + } + + pd.num_cs = num_cs; + pd.src_clk_nr = src_clk_nr; + pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi0_cfg_gpio; + + s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi0); +} +#endif /* CONFIG_S3C64XX_DEV_SPI0 */ + +#ifdef CONFIG_S3C64XX_DEV_SPI1 +static struct resource s3c64xx_spi1_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_SPI1, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_SPI1), +}; + +struct platform_device s3c64xx_device_spi1 = { + .name = "s3c6410-spi", + .id = 1, + .num_resources = ARRAY_SIZE(s3c64xx_spi1_resource), + .resource = s3c64xx_spi1_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, + int num_cs) +{ + struct s3c64xx_spi_info pd; + + /* Reject invalid configuration */ + if (!num_cs || src_clk_nr < 0) { + pr_err("%s: Invalid SPI configuration\n", __func__); + return; + } + + pd.num_cs = num_cs; + pd.src_clk_nr = src_clk_nr; + pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi1_cfg_gpio; + + s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi1); +} +#endif /* CONFIG_S3C64XX_DEV_SPI1 */ + +#ifdef CONFIG_S3C64XX_DEV_SPI2 +static struct resource s3c64xx_spi2_resource[] = { + [0] = DEFINE_RES_MEM(S3C_PA_SPI2, SZ_256), + [1] = DEFINE_RES_IRQ(IRQ_SPI2), +}; + +struct platform_device s3c64xx_device_spi2 = { + .name = "s3c6410-spi", + .id = 2, + .num_resources = ARRAY_SIZE(s3c64xx_spi2_resource), + .resource = s3c64xx_spi2_resource, + .dev = { + .dma_mask = &samsung_device_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr, + int num_cs) +{ + struct s3c64xx_spi_info pd; + + /* Reject invalid configuration */ + if (!num_cs || src_clk_nr < 0) { + pr_err("%s: Invalid SPI configuration\n", __func__); + return; + } + + pd.num_cs = num_cs; + pd.src_clk_nr = src_clk_nr; + pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi2_cfg_gpio; + + s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi2); +} +#endif /* CONFIG_S3C64XX_DEV_SPI2 */ diff --git a/arch/arm/plat-samsung/gpio-samsung.c b/arch/arm/plat-samsung/gpio-samsung.c new file mode 100644 index 000000000..f66c820cd --- /dev/null +++ b/arch/arm/plat-samsung/gpio-samsung.c @@ -0,0 +1,1324 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2009-2011 Samsung Electronics Co., Ltd. +// http://www.samsung.com/ +// +// Copyright 2008 Openmoko, Inc. +// Copyright 2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// SAMSUNG - GPIOlib support + +#include <linux/kernel.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/ioport.h> +#include <linux/of.h> +#include <linux/slab.h> +#include <linux/of_address.h> + +#include <asm/irq.h> + +#include <mach/irqs.h> +#include <mach/map.h> +#include <mach/regs-gpio.h> +#include <mach/gpio-samsung.h> + +#include <plat/cpu.h> +#include <plat/gpio-core.h> +#include <plat/gpio-cfg.h> +#include <plat/gpio-cfg-helpers.h> +#include <plat/pm.h> + +int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + void __iomem *reg = chip->base + 0x08; + int shift = off * 2; + u32 pup; + + pup = __raw_readl(reg); + pup &= ~(3 << shift); + pup |= pull << shift; + __raw_writel(pup, reg); + + return 0; +} + +samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip, + unsigned int off) +{ + void __iomem *reg = chip->base + 0x08; + int shift = off * 2; + u32 pup = __raw_readl(reg); + + pup >>= shift; + pup &= 0x3; + + return (__force samsung_gpio_pull_t)pup; +} + +int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + switch (pull) { + case S3C_GPIO_PULL_NONE: + pull = 0x01; + break; + case S3C_GPIO_PULL_UP: + pull = 0x00; + break; + case S3C_GPIO_PULL_DOWN: + pull = 0x02; + break; + } + return samsung_gpio_setpull_updown(chip, off, pull); +} + +samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip, + unsigned int off) +{ + samsung_gpio_pull_t pull; + + pull = samsung_gpio_getpull_updown(chip, off); + + switch (pull) { + case 0x00: + pull = S3C_GPIO_PULL_UP; + break; + case 0x01: + case 0x03: + pull = S3C_GPIO_PULL_NONE; + break; + case 0x02: + pull = S3C_GPIO_PULL_DOWN; + break; + } + + return pull; +} + +static int s3c24xx_gpio_setpull_1(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull, + samsung_gpio_pull_t updown) +{ + void __iomem *reg = chip->base + 0x08; + u32 pup = __raw_readl(reg); + + if (pull == updown) + pup &= ~(1 << off); + else if (pull == S3C_GPIO_PULL_NONE) + pup |= (1 << off); + else + return -EINVAL; + + __raw_writel(pup, reg); + return 0; +} + +static samsung_gpio_pull_t s3c24xx_gpio_getpull_1(struct samsung_gpio_chip *chip, + unsigned int off, + samsung_gpio_pull_t updown) +{ + void __iomem *reg = chip->base + 0x08; + u32 pup = __raw_readl(reg); + + pup &= (1 << off); + return pup ? S3C_GPIO_PULL_NONE : updown; +} + +samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_UP); +} + +int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_UP); +} + +samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return s3c24xx_gpio_getpull_1(chip, off, S3C_GPIO_PULL_DOWN); +} + +int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + return s3c24xx_gpio_setpull_1(chip, off, pull, S3C_GPIO_PULL_DOWN); +} + +/* + * samsung_gpio_setcfg_2bit - Samsung 2bit style GPIO configuration. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @cfg: The configuration value to set. + * + * This helper deal with the GPIO cases where the control register + * has two bits of configuration per gpio, which have the following + * functions: + * 00 = input + * 01 = output + * 1x = special function + */ + +static int samsung_gpio_setcfg_2bit(struct samsung_gpio_chip *chip, + unsigned int off, unsigned int cfg) +{ + void __iomem *reg = chip->base; + unsigned int shift = off * 2; + u32 con; + + if (samsung_gpio_is_cfg_special(cfg)) { + cfg &= 0xf; + if (cfg > 3) + return -EINVAL; + + cfg <<= shift; + } + + con = __raw_readl(reg); + con &= ~(0x3 << shift); + con |= cfg; + __raw_writel(con, reg); + + return 0; +} + +/* + * samsung_gpio_getcfg_2bit - Samsung 2bit style GPIO configuration read. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * + * The reverse of samsung_gpio_setcfg_2bit(). Will return a value which + * could be directly passed back to samsung_gpio_setcfg_2bit(), from the + * S3C_GPIO_SPECIAL() macro. + */ + +static unsigned int samsung_gpio_getcfg_2bit(struct samsung_gpio_chip *chip, + unsigned int off) +{ + u32 con; + + con = __raw_readl(chip->base); + con >>= off * 2; + con &= 3; + + /* this conversion works for IN and OUT as well as special mode */ + return S3C_GPIO_SPECIAL(con); +} + +/* + * samsung_gpio_setcfg_4bit - Samsung 4bit single register GPIO config. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @cfg: The configuration value to set. + * + * This helper deal with the GPIO cases where the control register has 4 bits + * of control per GPIO, generally in the form of: + * 0000 = Input + * 0001 = Output + * others = Special functions (dependent on bank) + * + * Note, since the code to deal with the case where there are two control + * registers instead of one, we do not have a separate set of functions for + * each case. + */ + +static int samsung_gpio_setcfg_4bit(struct samsung_gpio_chip *chip, + unsigned int off, unsigned int cfg) +{ + void __iomem *reg = chip->base; + unsigned int shift = (off & 7) * 4; + u32 con; + + if (off < 8 && chip->chip.ngpio > 8) + reg -= 4; + + if (samsung_gpio_is_cfg_special(cfg)) { + cfg &= 0xf; + cfg <<= shift; + } + + con = __raw_readl(reg); + con &= ~(0xf << shift); + con |= cfg; + __raw_writel(con, reg); + + return 0; +} + +/* + * samsung_gpio_getcfg_4bit - Samsung 4bit single register GPIO config read. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * + * The reverse of samsung_gpio_setcfg_4bit(), turning a gpio configuration + * register setting into a value the software can use, such as could be passed + * to samsung_gpio_setcfg_4bit(). + * + * @sa samsung_gpio_getcfg_2bit + */ + +static unsigned samsung_gpio_getcfg_4bit(struct samsung_gpio_chip *chip, + unsigned int off) +{ + void __iomem *reg = chip->base; + unsigned int shift = (off & 7) * 4; + u32 con; + + if (off < 8 && chip->chip.ngpio > 8) + reg -= 4; + + con = __raw_readl(reg); + con >>= shift; + con &= 0xf; + + /* this conversion works for IN and OUT as well as special mode */ + return S3C_GPIO_SPECIAL(con); +} + +#ifdef CONFIG_PLAT_S3C24XX +/* + * s3c24xx_gpio_setcfg_abank - S3C24XX style GPIO configuration (Bank A) + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @cfg: The configuration value to set. + * + * This helper deal with the GPIO cases where the control register + * has one bit of configuration for the gpio, where setting the bit + * means the pin is in special function mode and unset means output. + */ + +static int s3c24xx_gpio_setcfg_abank(struct samsung_gpio_chip *chip, + unsigned int off, unsigned int cfg) +{ + void __iomem *reg = chip->base; + unsigned int shift = off; + u32 con; + + if (samsung_gpio_is_cfg_special(cfg)) { + cfg &= 0xf; + + /* Map output to 0, and SFN2 to 1 */ + cfg -= 1; + if (cfg > 1) + return -EINVAL; + + cfg <<= shift; + } + + con = __raw_readl(reg); + con &= ~(0x1 << shift); + con |= cfg; + __raw_writel(con, reg); + + return 0; +} + +/* + * s3c24xx_gpio_getcfg_abank - S3C24XX style GPIO configuration read (Bank A) + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * + * The reverse of s3c24xx_gpio_setcfg_abank() turning an GPIO into a usable + * GPIO configuration value. + * + * @sa samsung_gpio_getcfg_2bit + * @sa samsung_gpio_getcfg_4bit + */ + +static unsigned s3c24xx_gpio_getcfg_abank(struct samsung_gpio_chip *chip, + unsigned int off) +{ + u32 con; + + con = __raw_readl(chip->base); + con >>= off; + con &= 1; + con++; + + return S3C_GPIO_SFN(con); +} +#endif + +static void __init samsung_gpiolib_set_cfg(struct samsung_gpio_cfg *chipcfg, + int nr_chips) +{ + for (; nr_chips > 0; nr_chips--, chipcfg++) { + if (!chipcfg->set_config) + chipcfg->set_config = samsung_gpio_setcfg_4bit; + if (!chipcfg->get_config) + chipcfg->get_config = samsung_gpio_getcfg_4bit; + if (!chipcfg->set_pull) + chipcfg->set_pull = samsung_gpio_setpull_updown; + if (!chipcfg->get_pull) + chipcfg->get_pull = samsung_gpio_getpull_updown; + } +} + +struct samsung_gpio_cfg s3c24xx_gpiocfg_default = { + .set_config = samsung_gpio_setcfg_2bit, + .get_config = samsung_gpio_getcfg_2bit, +}; + +#ifdef CONFIG_PLAT_S3C24XX +static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = { + .set_config = s3c24xx_gpio_setcfg_abank, + .get_config = s3c24xx_gpio_getcfg_abank, +}; +#endif + +static struct samsung_gpio_cfg samsung_gpio_cfgs[] = { + [0] = { + .cfg_eint = 0x0, + }, + [1] = { + .cfg_eint = 0x3, + }, + [2] = { + .cfg_eint = 0x7, + }, + [3] = { + .cfg_eint = 0xF, + }, + [4] = { + .cfg_eint = 0x0, + .set_config = samsung_gpio_setcfg_2bit, + .get_config = samsung_gpio_getcfg_2bit, + }, + [5] = { + .cfg_eint = 0x2, + .set_config = samsung_gpio_setcfg_2bit, + .get_config = samsung_gpio_getcfg_2bit, + }, + [6] = { + .cfg_eint = 0x3, + .set_config = samsung_gpio_setcfg_2bit, + .get_config = samsung_gpio_getcfg_2bit, + }, + [7] = { + .set_config = samsung_gpio_setcfg_2bit, + .get_config = samsung_gpio_getcfg_2bit, + }, +}; + +/* + * Default routines for controlling GPIO, based on the original S3C24XX + * GPIO functions which deal with the case where each gpio bank of the + * chip is as following: + * + * base + 0x00: Control register, 2 bits per gpio + * gpio n: 2 bits starting at (2*n) + * 00 = input, 01 = output, others mean special-function + * base + 0x04: Data register, 1 bit per gpio + * bit n: data bit n +*/ + +static int samsung_gpiolib_2bit_input(struct gpio_chip *chip, unsigned offset) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long flags; + unsigned long con; + + samsung_gpio_lock(ourchip, flags); + + con = __raw_readl(base + 0x00); + con &= ~(3 << (offset * 2)); + + __raw_writel(con, base + 0x00); + + samsung_gpio_unlock(ourchip, flags); + return 0; +} + +static int samsung_gpiolib_2bit_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long flags; + unsigned long dat; + unsigned long con; + + samsung_gpio_lock(ourchip, flags); + + dat = __raw_readl(base + 0x04); + dat &= ~(1 << offset); + if (value) + dat |= 1 << offset; + __raw_writel(dat, base + 0x04); + + con = __raw_readl(base + 0x00); + con &= ~(3 << (offset * 2)); + con |= 1 << (offset * 2); + + __raw_writel(con, base + 0x00); + __raw_writel(dat, base + 0x04); + + samsung_gpio_unlock(ourchip, flags); + return 0; +} + +/* + * The samsung_gpiolib_4bit routines are to control the gpio banks where + * the gpio configuration register (GPxCON) has 4 bits per GPIO, as the + * following example: + * + * base + 0x00: Control register, 4 bits per gpio + * gpio n: 4 bits starting at (4*n) + * 0000 = input, 0001 = output, others mean special-function + * base + 0x04: Data register, 1 bit per gpio + * bit n: data bit n + * + * Note, since the data register is one bit per gpio and is at base + 0x4 + * we can use samsung_gpiolib_get and samsung_gpiolib_set to change the + * state of the output. + */ + +static int samsung_gpiolib_4bit_input(struct gpio_chip *chip, + unsigned int offset) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long con; + + con = __raw_readl(base + GPIOCON_OFF); + if (ourchip->bitmap_gpio_int & BIT(offset)) + con |= 0xf << con_4bit_shift(offset); + else + con &= ~(0xf << con_4bit_shift(offset)); + __raw_writel(con, base + GPIOCON_OFF); + + pr_debug("%s: %p: CON now %08lx\n", __func__, base, con); + + return 0; +} + +static int samsung_gpiolib_4bit_output(struct gpio_chip *chip, + unsigned int offset, int value) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long con; + unsigned long dat; + + con = __raw_readl(base + GPIOCON_OFF); + con &= ~(0xf << con_4bit_shift(offset)); + con |= 0x1 << con_4bit_shift(offset); + + dat = __raw_readl(base + GPIODAT_OFF); + + if (value) + dat |= 1 << offset; + else + dat &= ~(1 << offset); + + __raw_writel(dat, base + GPIODAT_OFF); + __raw_writel(con, base + GPIOCON_OFF); + __raw_writel(dat, base + GPIODAT_OFF); + + pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat); + + return 0; +} + +/* + * The next set of routines are for the case where the GPIO configuration + * registers are 4 bits per GPIO but there is more than one register (the + * bank has more than 8 GPIOs. + * + * This case is the similar to the 4 bit case, but the registers are as + * follows: + * + * base + 0x00: Control register, 4 bits per gpio (lower 8 GPIOs) + * gpio n: 4 bits starting at (4*n) + * 0000 = input, 0001 = output, others mean special-function + * base + 0x04: Control register, 4 bits per gpio (up to 8 additions GPIOs) + * gpio n: 4 bits starting at (4*n) + * 0000 = input, 0001 = output, others mean special-function + * base + 0x08: Data register, 1 bit per gpio + * bit n: data bit n + * + * To allow us to use the samsung_gpiolib_get and samsung_gpiolib_set + * routines we store the 'base + 0x4' address so that these routines see + * the data register at ourchip->base + 0x04. + */ + +static int samsung_gpiolib_4bit2_input(struct gpio_chip *chip, + unsigned int offset) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + void __iomem *regcon = base; + unsigned long con; + + if (offset > 7) + offset -= 8; + else + regcon -= 4; + + con = __raw_readl(regcon); + con &= ~(0xf << con_4bit_shift(offset)); + __raw_writel(con, regcon); + + pr_debug("%s: %p: CON %08lx\n", __func__, base, con); + + return 0; +} + +static int samsung_gpiolib_4bit2_output(struct gpio_chip *chip, + unsigned int offset, int value) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + void __iomem *regcon = base; + unsigned long con; + unsigned long dat; + unsigned con_offset = offset; + + if (con_offset > 7) + con_offset -= 8; + else + regcon -= 4; + + con = __raw_readl(regcon); + con &= ~(0xf << con_4bit_shift(con_offset)); + con |= 0x1 << con_4bit_shift(con_offset); + + dat = __raw_readl(base + GPIODAT_OFF); + + if (value) + dat |= 1 << offset; + else + dat &= ~(1 << offset); + + __raw_writel(dat, base + GPIODAT_OFF); + __raw_writel(con, regcon); + __raw_writel(dat, base + GPIODAT_OFF); + + pr_debug("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat); + + return 0; +} + +#ifdef CONFIG_PLAT_S3C24XX +/* The next set of routines are for the case of s3c24xx bank a */ + +static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset) +{ + return -EINVAL; +} + +static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long flags; + unsigned long dat; + unsigned long con; + + local_irq_save(flags); + + con = __raw_readl(base + 0x00); + dat = __raw_readl(base + 0x04); + + dat &= ~(1 << offset); + if (value) + dat |= 1 << offset; + + __raw_writel(dat, base + 0x04); + + con &= ~(1 << offset); + + __raw_writel(con, base + 0x00); + __raw_writel(dat, base + 0x04); + + local_irq_restore(flags); + return 0; +} +#endif + +static void samsung_gpiolib_set(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long flags; + unsigned long dat; + + samsung_gpio_lock(ourchip, flags); + + dat = __raw_readl(base + 0x04); + dat &= ~(1 << offset); + if (value) + dat |= 1 << offset; + __raw_writel(dat, base + 0x04); + + samsung_gpio_unlock(ourchip, flags); +} + +static int samsung_gpiolib_get(struct gpio_chip *chip, unsigned offset) +{ + struct samsung_gpio_chip *ourchip = to_samsung_gpio(chip); + unsigned long val; + + val = __raw_readl(ourchip->base + 0x04); + val >>= offset; + val &= 1; + + return val; +} + +/* + * CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios + * for use with the configuration calls, and other parts of the s3c gpiolib + * support code. + * + * Not all s3c support code will need this, as some configurations of cpu + * may only support one or two different configuration options and have an + * easy gpio to samsung_gpio_chip mapping function. If this is the case, then + * the machine support file should provide its own samsung_gpiolib_getchip() + * and any other necessary functions. + */ + +#ifdef CONFIG_S3C_GPIO_TRACK +struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END]; + +static __init void s3c_gpiolib_track(struct samsung_gpio_chip *chip) +{ + unsigned int gpn; + int i; + + gpn = chip->chip.base; + for (i = 0; i < chip->chip.ngpio; i++, gpn++) { + BUG_ON(gpn >= ARRAY_SIZE(s3c_gpios)); + s3c_gpios[gpn] = chip; + } +} +#endif /* CONFIG_S3C_GPIO_TRACK */ + +/* + * samsung_gpiolib_add() - add the Samsung gpio_chip. + * @chip: The chip to register + * + * This is a wrapper to gpiochip_add() that takes our specific gpio chip + * information and makes the necessary alterations for the platform and + * notes the information for use with the configuration systems and any + * other parts of the system. + */ + +static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip) +{ + struct gpio_chip *gc = &chip->chip; + int ret; + + BUG_ON(!chip->base); + BUG_ON(!gc->label); + BUG_ON(!gc->ngpio); + + spin_lock_init(&chip->lock); + + if (!gc->direction_input) + gc->direction_input = samsung_gpiolib_2bit_input; + if (!gc->direction_output) + gc->direction_output = samsung_gpiolib_2bit_output; + if (!gc->set) + gc->set = samsung_gpiolib_set; + if (!gc->get) + gc->get = samsung_gpiolib_get; + +#ifdef CONFIG_PM + if (chip->pm != NULL) { + if (!chip->pm->save || !chip->pm->resume) + pr_err("gpio: %s has missing PM functions\n", + gc->label); + } else + pr_err("gpio: %s has no PM function\n", gc->label); +#endif + + /* gpiochip_add() prints own failure message on error. */ + ret = gpiochip_add_data(gc, chip); + if (ret >= 0) + s3c_gpiolib_track(chip); +} + +static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip, + int nr_chips, void __iomem *base) +{ + int i; + struct gpio_chip *gc = &chip->chip; + + for (i = 0 ; i < nr_chips; i++, chip++) { + /* skip banks not present on SoC */ + if (chip->chip.base >= S3C_GPIO_END) + continue; + + if (!chip->config) + chip->config = &s3c24xx_gpiocfg_default; + if (!chip->pm) + chip->pm = __gpio_pm(&samsung_gpio_pm_2bit); + if ((base != NULL) && (chip->base == NULL)) + chip->base = base + ((i) * 0x10); + + if (!gc->direction_input) + gc->direction_input = samsung_gpiolib_2bit_input; + if (!gc->direction_output) + gc->direction_output = samsung_gpiolib_2bit_output; + + samsung_gpiolib_add(chip); + } +} + +static void __init samsung_gpiolib_add_2bit_chips(struct samsung_gpio_chip *chip, + int nr_chips, void __iomem *base, + unsigned int offset) +{ + int i; + + for (i = 0 ; i < nr_chips; i++, chip++) { + chip->chip.direction_input = samsung_gpiolib_2bit_input; + chip->chip.direction_output = samsung_gpiolib_2bit_output; + + if (!chip->config) + chip->config = &samsung_gpio_cfgs[7]; + if (!chip->pm) + chip->pm = __gpio_pm(&samsung_gpio_pm_2bit); + if ((base != NULL) && (chip->base == NULL)) + chip->base = base + ((i) * offset); + + samsung_gpiolib_add(chip); + } +} + +/* + * samsung_gpiolib_add_4bit_chips - 4bit single register GPIO config. + * @chip: The gpio chip that is being configured. + * @nr_chips: The no of chips (gpio ports) for the GPIO being configured. + * + * This helper deal with the GPIO cases where the control register has 4 bits + * of control per GPIO, generally in the form of: + * 0000 = Input + * 0001 = Output + * others = Special functions (dependent on bank) + * + * Note, since the code to deal with the case where there are two control + * registers instead of one, we do not have a separate set of function + * (samsung_gpiolib_add_4bit2_chips)for each case. + */ + +static void __init samsung_gpiolib_add_4bit_chips(struct samsung_gpio_chip *chip, + int nr_chips, void __iomem *base) +{ + int i; + + for (i = 0 ; i < nr_chips; i++, chip++) { + chip->chip.direction_input = samsung_gpiolib_4bit_input; + chip->chip.direction_output = samsung_gpiolib_4bit_output; + + if (!chip->config) + chip->config = &samsung_gpio_cfgs[2]; + if (!chip->pm) + chip->pm = __gpio_pm(&samsung_gpio_pm_4bit); + if ((base != NULL) && (chip->base == NULL)) + chip->base = base + ((i) * 0x20); + + chip->bitmap_gpio_int = 0; + + samsung_gpiolib_add(chip); + } +} + +static void __init samsung_gpiolib_add_4bit2_chips(struct samsung_gpio_chip *chip, + int nr_chips) +{ + for (; nr_chips > 0; nr_chips--, chip++) { + chip->chip.direction_input = samsung_gpiolib_4bit2_input; + chip->chip.direction_output = samsung_gpiolib_4bit2_output; + + if (!chip->config) + chip->config = &samsung_gpio_cfgs[2]; + if (!chip->pm) + chip->pm = __gpio_pm(&samsung_gpio_pm_4bit); + + samsung_gpiolib_add(chip); + } +} + +int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + struct samsung_gpio_chip *samsung_chip = gpiochip_get_data(chip); + + return samsung_chip->irq_base + offset; +} + +#ifdef CONFIG_PLAT_S3C24XX +static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset) +{ + if (offset < 4) { + if (soc_is_s3c2412()) + return IRQ_EINT0_2412 + offset; + else + return IRQ_EINT0 + offset; + } + + if (offset < 8) + return IRQ_EINT4 + offset - 4; + + return -EINVAL; +} +#endif + +#ifdef CONFIG_ARCH_S3C64XX +static int s3c64xx_gpiolib_mbank_to_irq(struct gpio_chip *chip, unsigned pin) +{ + return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO; +} + +static int s3c64xx_gpiolib_lbank_to_irq(struct gpio_chip *chip, unsigned pin) +{ + return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO; +} +#endif + +struct samsung_gpio_chip s3c24xx_gpios[] = { +#ifdef CONFIG_PLAT_S3C24XX + { + .config = &s3c24xx_gpiocfg_banka, + .chip = { + .base = S3C2410_GPA(0), + .owner = THIS_MODULE, + .label = "GPIOA", + .ngpio = 27, + .direction_input = s3c24xx_gpiolib_banka_input, + .direction_output = s3c24xx_gpiolib_banka_output, + }, + }, { + .chip = { + .base = S3C2410_GPB(0), + .owner = THIS_MODULE, + .label = "GPIOB", + .ngpio = 11, + }, + }, { + .chip = { + .base = S3C2410_GPC(0), + .owner = THIS_MODULE, + .label = "GPIOC", + .ngpio = 16, + }, + }, { + .chip = { + .base = S3C2410_GPD(0), + .owner = THIS_MODULE, + .label = "GPIOD", + .ngpio = 16, + }, + }, { + .chip = { + .base = S3C2410_GPE(0), + .label = "GPIOE", + .owner = THIS_MODULE, + .ngpio = 16, + }, + }, { + .chip = { + .base = S3C2410_GPF(0), + .owner = THIS_MODULE, + .label = "GPIOF", + .ngpio = 8, + .to_irq = s3c24xx_gpiolib_fbank_to_irq, + }, + }, { + .irq_base = IRQ_EINT8, + .chip = { + .base = S3C2410_GPG(0), + .owner = THIS_MODULE, + .label = "GPIOG", + .ngpio = 16, + .to_irq = samsung_gpiolib_to_irq, + }, + }, { + .chip = { + .base = S3C2410_GPH(0), + .owner = THIS_MODULE, + .label = "GPIOH", + .ngpio = 15, + }, + }, + /* GPIOS for the S3C2443 and later devices. */ + { + .base = S3C2440_GPJCON, + .chip = { + .base = S3C2410_GPJ(0), + .owner = THIS_MODULE, + .label = "GPIOJ", + .ngpio = 16, + }, + }, { + .base = S3C2443_GPKCON, + .chip = { + .base = S3C2410_GPK(0), + .owner = THIS_MODULE, + .label = "GPIOK", + .ngpio = 16, + }, + }, { + .base = S3C2443_GPLCON, + .chip = { + .base = S3C2410_GPL(0), + .owner = THIS_MODULE, + .label = "GPIOL", + .ngpio = 15, + }, + }, { + .base = S3C2443_GPMCON, + .chip = { + .base = S3C2410_GPM(0), + .owner = THIS_MODULE, + .label = "GPIOM", + .ngpio = 2, + }, + }, +#endif +}; + +/* + * GPIO bank summary: + * + * Bank GPIOs Style SlpCon ExtInt Group + * A 8 4Bit Yes 1 + * B 7 4Bit Yes 1 + * C 8 4Bit Yes 2 + * D 5 4Bit Yes 3 + * E 5 4Bit Yes None + * F 16 2Bit Yes 4 [1] + * G 7 4Bit Yes 5 + * H 10 4Bit[2] Yes 6 + * I 16 2Bit Yes None + * J 12 2Bit Yes None + * K 16 4Bit[2] No None + * L 15 4Bit[2] No None + * M 6 4Bit No IRQ_EINT + * N 16 2Bit No IRQ_EINT + * O 16 2Bit Yes 7 + * P 15 2Bit Yes 8 + * Q 9 2Bit Yes 9 + * + * [1] BANKF pins 14,15 do not form part of the external interrupt sources + * [2] BANK has two control registers, GPxCON0 and GPxCON1 + */ + +static struct samsung_gpio_chip s3c64xx_gpios_4bit[] = { +#ifdef CONFIG_ARCH_S3C64XX + { + .chip = { + .base = S3C64XX_GPA(0), + .ngpio = S3C64XX_GPIO_A_NR, + .label = "GPA", + }, + }, { + .chip = { + .base = S3C64XX_GPB(0), + .ngpio = S3C64XX_GPIO_B_NR, + .label = "GPB", + }, + }, { + .chip = { + .base = S3C64XX_GPC(0), + .ngpio = S3C64XX_GPIO_C_NR, + .label = "GPC", + }, + }, { + .chip = { + .base = S3C64XX_GPD(0), + .ngpio = S3C64XX_GPIO_D_NR, + .label = "GPD", + }, + }, { + .config = &samsung_gpio_cfgs[0], + .chip = { + .base = S3C64XX_GPE(0), + .ngpio = S3C64XX_GPIO_E_NR, + .label = "GPE", + }, + }, { + .base = S3C64XX_GPG_BASE, + .chip = { + .base = S3C64XX_GPG(0), + .ngpio = S3C64XX_GPIO_G_NR, + .label = "GPG", + }, + }, { + .base = S3C64XX_GPM_BASE, + .config = &samsung_gpio_cfgs[1], + .chip = { + .base = S3C64XX_GPM(0), + .ngpio = S3C64XX_GPIO_M_NR, + .label = "GPM", + .to_irq = s3c64xx_gpiolib_mbank_to_irq, + }, + }, +#endif +}; + +static struct samsung_gpio_chip s3c64xx_gpios_4bit2[] = { +#ifdef CONFIG_ARCH_S3C64XX + { + .base = S3C64XX_GPH_BASE + 0x4, + .chip = { + .base = S3C64XX_GPH(0), + .ngpio = S3C64XX_GPIO_H_NR, + .label = "GPH", + }, + }, { + .base = S3C64XX_GPK_BASE + 0x4, + .config = &samsung_gpio_cfgs[0], + .chip = { + .base = S3C64XX_GPK(0), + .ngpio = S3C64XX_GPIO_K_NR, + .label = "GPK", + }, + }, { + .base = S3C64XX_GPL_BASE + 0x4, + .config = &samsung_gpio_cfgs[1], + .chip = { + .base = S3C64XX_GPL(0), + .ngpio = S3C64XX_GPIO_L_NR, + .label = "GPL", + .to_irq = s3c64xx_gpiolib_lbank_to_irq, + }, + }, +#endif +}; + +static struct samsung_gpio_chip s3c64xx_gpios_2bit[] = { +#ifdef CONFIG_ARCH_S3C64XX + { + .base = S3C64XX_GPF_BASE, + .config = &samsung_gpio_cfgs[6], + .chip = { + .base = S3C64XX_GPF(0), + .ngpio = S3C64XX_GPIO_F_NR, + .label = "GPF", + }, + }, { + .config = &samsung_gpio_cfgs[7], + .chip = { + .base = S3C64XX_GPI(0), + .ngpio = S3C64XX_GPIO_I_NR, + .label = "GPI", + }, + }, { + .config = &samsung_gpio_cfgs[7], + .chip = { + .base = S3C64XX_GPJ(0), + .ngpio = S3C64XX_GPIO_J_NR, + .label = "GPJ", + }, + }, { + .config = &samsung_gpio_cfgs[6], + .chip = { + .base = S3C64XX_GPO(0), + .ngpio = S3C64XX_GPIO_O_NR, + .label = "GPO", + }, + }, { + .config = &samsung_gpio_cfgs[6], + .chip = { + .base = S3C64XX_GPP(0), + .ngpio = S3C64XX_GPIO_P_NR, + .label = "GPP", + }, + }, { + .config = &samsung_gpio_cfgs[6], + .chip = { + .base = S3C64XX_GPQ(0), + .ngpio = S3C64XX_GPIO_Q_NR, + .label = "GPQ", + }, + }, { + .base = S3C64XX_GPN_BASE, + .irq_base = IRQ_EINT(0), + .config = &samsung_gpio_cfgs[5], + .chip = { + .base = S3C64XX_GPN(0), + .ngpio = S3C64XX_GPIO_N_NR, + .label = "GPN", + .to_irq = samsung_gpiolib_to_irq, + }, + }, +#endif +}; + +/* TODO: cleanup soc_is_* */ +static __init int samsung_gpiolib_init(void) +{ + /* + * Currently there are two drivers that can provide GPIO support for + * Samsung SoCs. For device tree enabled platforms, the new + * pinctrl-samsung driver is used, providing both GPIO and pin control + * interfaces. For legacy (non-DT) platforms this driver is used. + */ + if (of_have_populated_dt()) + return 0; + + if (soc_is_s3c24xx()) { + samsung_gpiolib_set_cfg(samsung_gpio_cfgs, + ARRAY_SIZE(samsung_gpio_cfgs)); + s3c24xx_gpiolib_add_chips(s3c24xx_gpios, + ARRAY_SIZE(s3c24xx_gpios), S3C24XX_VA_GPIO); + } else if (soc_is_s3c64xx()) { + samsung_gpiolib_set_cfg(samsung_gpio_cfgs, + ARRAY_SIZE(samsung_gpio_cfgs)); + samsung_gpiolib_add_2bit_chips(s3c64xx_gpios_2bit, + ARRAY_SIZE(s3c64xx_gpios_2bit), + S3C64XX_VA_GPIO + 0xE0, 0x20); + samsung_gpiolib_add_4bit_chips(s3c64xx_gpios_4bit, + ARRAY_SIZE(s3c64xx_gpios_4bit), + S3C64XX_VA_GPIO); + samsung_gpiolib_add_4bit2_chips(s3c64xx_gpios_4bit2, + ARRAY_SIZE(s3c64xx_gpios_4bit2)); + } + + return 0; +} +core_initcall(samsung_gpiolib_init); + +int s3c_gpio_cfgpin(unsigned int pin, unsigned int config) +{ + struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin); + unsigned long flags; + int offset; + int ret; + + if (!chip) + return -EINVAL; + + offset = pin - chip->chip.base; + + samsung_gpio_lock(chip, flags); + ret = samsung_gpio_do_setcfg(chip, offset, config); + samsung_gpio_unlock(chip, flags); + + return ret; +} +EXPORT_SYMBOL(s3c_gpio_cfgpin); + +int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr, + unsigned int cfg) +{ + int ret; + + for (; nr > 0; nr--, start++) { + ret = s3c_gpio_cfgpin(start, cfg); + if (ret != 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(s3c_gpio_cfgpin_range); + +int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr, + unsigned int cfg, samsung_gpio_pull_t pull) +{ + int ret; + + for (; nr > 0; nr--, start++) { + s3c_gpio_setpull(start, pull); + ret = s3c_gpio_cfgpin(start, cfg); + if (ret != 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(s3c_gpio_cfgall_range); + +unsigned s3c_gpio_getcfg(unsigned int pin) +{ + struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin); + unsigned long flags; + unsigned ret = 0; + int offset; + + if (chip) { + offset = pin - chip->chip.base; + + samsung_gpio_lock(chip, flags); + ret = samsung_gpio_do_getcfg(chip, offset); + samsung_gpio_unlock(chip, flags); + } + + return ret; +} +EXPORT_SYMBOL(s3c_gpio_getcfg); + +int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull) +{ + struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin); + unsigned long flags; + int offset, ret; + + if (!chip) + return -EINVAL; + + offset = pin - chip->chip.base; + + samsung_gpio_lock(chip, flags); + ret = samsung_gpio_do_setpull(chip, offset, pull); + samsung_gpio_unlock(chip, flags); + + return ret; +} +EXPORT_SYMBOL(s3c_gpio_setpull); + +samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin) +{ + struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin); + unsigned long flags; + int offset; + u32 pup = 0; + + if (chip) { + offset = pin - chip->chip.base; + + samsung_gpio_lock(chip, flags); + pup = samsung_gpio_do_getpull(chip, offset); + samsung_gpio_unlock(chip, flags); + } + + return (__force samsung_gpio_pull_t)pup; +} +EXPORT_SYMBOL(s3c_gpio_getpull); + +#ifdef CONFIG_PLAT_S3C24XX +unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change) +{ + unsigned long flags; + unsigned long misccr; + + local_irq_save(flags); + misccr = __raw_readl(S3C24XX_MISCCR); + misccr &= ~clear; + misccr ^= change; + __raw_writel(misccr, S3C24XX_MISCCR); + local_irq_restore(flags); + + return misccr; +} +EXPORT_SYMBOL(s3c2410_modify_misccr); +#endif diff --git a/arch/arm/plat-samsung/include/plat/adc-core.h b/arch/arm/plat-samsung/include/plat/adc-core.h new file mode 100644 index 000000000..039f6862b --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/adc-core.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Samsung ADC Controller core functions + */ + +#ifndef __ASM_PLAT_ADC_CORE_H +#define __ASM_PLAT_ADC_CORE_H __FILE__ + +/* These functions are only for use with the core support code, such as + * the cpu specific initialisation code + */ + +/* re-define device name depending on support. */ +static inline void s3c_adc_setname(char *name) +{ +#if defined(CONFIG_SAMSUNG_DEV_ADC) || defined(CONFIG_PLAT_S3C24XX) + s3c_device_adc.name = name; +#endif +} + +#endif /* __ASM_PLAT_ADC_CORE_H */ diff --git a/arch/arm/plat-samsung/include/plat/adc.h b/arch/arm/plat-samsung/include/plat/adc.h new file mode 100644 index 000000000..74d1a4640 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/adc.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C ADC driver information + */ + +#ifndef __ASM_PLAT_ADC_H +#define __ASM_PLAT_ADC_H __FILE__ + +struct s3c_adc_client; +struct platform_device; + +extern int s3c_adc_start(struct s3c_adc_client *client, + unsigned int channel, unsigned int nr_samples); + +extern int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch); + +extern struct s3c_adc_client * + s3c_adc_register(struct platform_device *pdev, + void (*select)(struct s3c_adc_client *client, + unsigned selected), + void (*conv)(struct s3c_adc_client *client, + unsigned d0, unsigned d1, + unsigned *samples_left), + unsigned int is_ts); + +extern void s3c_adc_release(struct s3c_adc_client *client); + +#endif /* __ASM_PLAT_ADC_H */ diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h new file mode 100644 index 000000000..2c7cf2665 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h @@ -0,0 +1,287 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2006-2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C CPU frequency scaling support - core support + */ + +#include <plat/cpu-freq.h> + +struct seq_file; + +#define MAX_BANKS (8) +#define S3C2412_MAX_IO (8) + +/** + * struct s3c2410_iobank_timing - IO bank timings for S3C2410 style timings + * @bankcon: The cached version of settings in this structure. + * @tacp: + * @tacs: Time from address valid to nCS asserted. + * @tcos: Time from nCS asserted to nOE or nWE asserted. + * @tacc: Time that nOE or nWE is asserted. + * @tcoh: Time nCS is held after nOE or nWE are released. + * @tcah: Time address is held for after + * @nwait_en: Whether nWAIT is enabled for this bank. + * + * This structure represents the IO timings for a S3C2410 style IO bank + * used by the CPU frequency support if it needs to change the settings + * of the IO. + */ +struct s3c2410_iobank_timing { + unsigned long bankcon; + unsigned int tacp; + unsigned int tacs; + unsigned int tcos; + unsigned int tacc; + unsigned int tcoh; /* nCS hold after nOE/nWE */ + unsigned int tcah; /* Address hold after nCS */ + unsigned char nwait_en; /* nWait enabled for bank. */ +}; + +/** + * struct s3c2412_iobank_timing - io timings for PL092 (S3C2412) style IO + * @idcy: The idle cycle time between transactions. + * @wstrd: nCS release to end of read cycle. + * @wstwr: nCS release to end of write cycle. + * @wstoen: nCS assertion to nOE assertion time. + * @wstwen: nCS assertion to nWE assertion time. + * @wstbrd: Burst ready delay. + * @smbidcyr: Register cache for smbidcyr value. + * @smbwstrd: Register cache for smbwstrd value. + * @smbwstwr: Register cache for smbwstwr value. + * @smbwstoen: Register cache for smbwstoen value. + * @smbwstwen: Register cache for smbwstwen value. + * @smbwstbrd: Register cache for smbwstbrd value. + * + * Timing information for a IO bank on an S3C2412 or similar system which + * uses a PL093 block. + */ +struct s3c2412_iobank_timing { + unsigned int idcy; + unsigned int wstrd; + unsigned int wstwr; + unsigned int wstoen; + unsigned int wstwen; + unsigned int wstbrd; + + /* register cache */ + unsigned char smbidcyr; + unsigned char smbwstrd; + unsigned char smbwstwr; + unsigned char smbwstoen; + unsigned char smbwstwen; + unsigned char smbwstbrd; +}; + +union s3c_iobank { + struct s3c2410_iobank_timing *io_2410; + struct s3c2412_iobank_timing *io_2412; +}; + +/** + * struct s3c_iotimings - Chip IO timings holder + * @bank: The timings for each IO bank. + */ +struct s3c_iotimings { + union s3c_iobank bank[MAX_BANKS]; +}; + +/** + * struct s3c_plltab - PLL table information. + * @vals: List of PLL values. + * @size: Size of the PLL table @vals. + */ +struct s3c_plltab { + struct s3c_pllval *vals; + int size; +}; + +/** + * struct s3c_cpufreq_config - current cpu frequency configuration + * @freq: The current settings for the core clocks. + * @max: Maxium settings, derived from core, board and user settings. + * @pll: The PLL table entry for the current PLL settings. + * @divs: The divisor settings for the core clocks. + * @info: The current core driver information. + * @board: The information for the board we are running on. + * @lock_pll: Set if the PLL settings cannot be changed. + * + * This is for the core drivers that need to know information about + * the current settings and values. It should not be needed by any + * device drivers. +*/ +struct s3c_cpufreq_config { + struct s3c_freq freq; + struct s3c_freq max; + struct clk *mpll; + struct cpufreq_frequency_table pll; + struct s3c_clkdivs divs; + struct s3c_cpufreq_info *info; /* for core, not drivers */ + struct s3c_cpufreq_board *board; + + unsigned int lock_pll:1; +}; + +/** + * struct s3c_cpufreq_info - Information for the CPU frequency driver. + * @name: The name of this implementation. + * @max: The maximum frequencies for the system. + * @latency: Transition latency to give to cpufreq. + * @locktime_m: The lock-time in uS for the MPLL. + * @locktime_u: The lock-time in uS for the UPLL. + * @locttime_bits: The number of bits each LOCKTIME field. + * @need_pll: Set if this driver needs to change the PLL values to achieve + * any frequency changes. This is really only need by devices like the + * S3C2410 where there is no or limited divider between the PLL and the + * ARMCLK. + * @get_iotiming: Get the current IO timing data, mainly for use at start. + * @set_iotiming: Update the IO timings from the cached copies calculated + * from the @calc_iotiming entry when changing the frequency. + * @calc_iotiming: Calculate and update the cached copies of the IO timings + * from the newly calculated frequencies. + * @calc_freqtable: Calculate (fill in) the given frequency table from the + * current frequency configuration. If the table passed in is NULL, + * then the return is the number of elements to be filled for allocation + * of the table. + * @set_refresh: Set the memory refresh configuration. + * @set_fvco: Set the PLL frequencies. + * @set_divs: Update the clock divisors. + * @calc_divs: Calculate the clock divisors. + */ +struct s3c_cpufreq_info { + const char *name; + struct s3c_freq max; + + unsigned int latency; + + unsigned int locktime_m; + unsigned int locktime_u; + unsigned char locktime_bits; + + unsigned int need_pll:1; + + /* driver routines */ + + int (*get_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + void (*set_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + int (*calc_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + int (*calc_freqtable)(struct s3c_cpufreq_config *cfg, + struct cpufreq_frequency_table *t, + size_t table_size); + + void (*debug_io_show)(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + + void (*set_refresh)(struct s3c_cpufreq_config *cfg); + void (*set_fvco)(struct s3c_cpufreq_config *cfg); + void (*set_divs)(struct s3c_cpufreq_config *cfg); + int (*calc_divs)(struct s3c_cpufreq_config *cfg); +}; + +extern int s3c_cpufreq_register(struct s3c_cpufreq_info *info); + +extern int s3c_plltab_register(struct cpufreq_frequency_table *plls, + unsigned int plls_no); + +/* exports and utilities for debugfs */ +extern struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void); +extern struct s3c_iotimings *s3c_cpufreq_getiotimings(void); + +#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS +#define s3c_cpufreq_debugfs_call(x) x +#else +#define s3c_cpufreq_debugfs_call(x) NULL +#endif + +/* Useful utility functions. */ + +extern struct clk *s3c_cpufreq_clk_get(struct device *, const char *); + +/* S3C2410 and compatible exported functions */ + +extern void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg); +extern void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg); + +#ifdef CONFIG_S3C2410_IOTIMING +extern void s3c2410_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + +extern int s3c2410_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +extern int s3c2410_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); +#else +#define s3c2410_iotiming_debugfs NULL +#define s3c2410_iotiming_calc NULL +#define s3c2410_iotiming_get NULL +#define s3c2410_iotiming_set NULL +#endif /* CONFIG_S3C2410_IOTIMING */ + +/* S3C2412 compatible routines */ + +#ifdef CONFIG_S3C2412_IOTIMING +extern void s3c2412_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + +extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); +#else +#define s3c2412_iotiming_debugfs NULL +#define s3c2412_iotiming_calc NULL +#define s3c2412_iotiming_get NULL +#define s3c2412_iotiming_set NULL +#endif /* CONFIG_S3C2412_IOTIMING */ + +#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG +#define s3c_freq_dbg(x...) printk(KERN_INFO x) +#else +#define s3c_freq_dbg(x...) do { if (0) printk(x); } while (0) +#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG */ + +#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG +#define s3c_freq_iodbg(x...) printk(KERN_INFO x) +#else +#define s3c_freq_iodbg(x...) do { if (0) printk(x); } while (0) +#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG */ + +static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table, + int index, size_t table_size, + unsigned int freq) +{ + if (index < 0) + return index; + + if (table) { + if (index >= table_size) + return -ENOMEM; + + s3c_freq_dbg("%s: { %d = %u kHz }\n", + __func__, index, freq); + + table[index].driver_data = index; + table[index].frequency = freq; + } + + return index + 1; +} diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq.h b/arch/arm/plat-samsung/include/plat/cpu-freq.h new file mode 100644 index 000000000..558892bcf --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/cpu-freq.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2006-2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C CPU frequency scaling support - driver and board + */ + +#include <linux/cpufreq.h> + +struct s3c_cpufreq_info; +struct s3c_cpufreq_board; +struct s3c_iotimings; + +/** + * struct s3c_freq - frequency information (mainly for core drivers) + * @fclk: The FCLK frequency in Hz. + * @armclk: The ARMCLK frequency in Hz. + * @hclk_tns: HCLK cycle time in 10ths of nano-seconds. + * @hclk: The HCLK frequency in Hz. + * @pclk: The PCLK frequency in Hz. + * + * This contains the frequency information about the current configuration + * mainly for the core drivers to ensure we do not end up passing about + * a large number of parameters. + * + * The @hclk_tns field is a useful cache for the parts of the drivers that + * need to calculate IO timings and suchlike. + */ +struct s3c_freq { + unsigned long fclk; + unsigned long armclk; + unsigned long hclk_tns; /* in 10ths of ns */ + unsigned long hclk; + unsigned long pclk; +}; + +/** + * struct s3c_cpufreq_freqs - s3c cpufreq notification information. + * @freqs: The cpufreq setting information. + * @old: The old clock settings. + * @new: The new clock settings. + * @pll_changing: Set if the PLL is changing. + * + * Wrapper 'struct cpufreq_freqs' so that any drivers receiving the + * notification can use this information that is not provided by just + * having the core frequency alone. + * + * The pll_changing flag is used to indicate if the PLL itself is + * being set during this change. This is important as the clocks + * will temporarily be set to the XTAL clock during this time, so + * drivers may want to close down their output during this time. + * + * Note, this is not being used by any current drivers and therefore + * may be removed in the future. + */ +struct s3c_cpufreq_freqs { + struct cpufreq_freqs freqs; + struct s3c_freq old; + struct s3c_freq new; + + unsigned int pll_changing:1; +}; + +#define to_s3c_cpufreq(_cf) container_of(_cf, struct s3c_cpufreq_freqs, freqs) + +/** + * struct s3c_clkdivs - clock divisor information + * @p_divisor: Divisor from FCLK to PCLK. + * @h_divisor: Divisor from FCLK to HCLK. + * @arm_divisor: Divisor from FCLK to ARMCLK (not all CPUs). + * @dvs: Non-zero if using DVS mode for ARMCLK. + * + * Divisor settings for the core clocks. + */ +struct s3c_clkdivs { + int p_divisor; + int h_divisor; + int arm_divisor; + unsigned char dvs; +}; + +#define PLLVAL(_m, _p, _s) (((_m) << 12) | ((_p) << 4) | (_s)) + +/** + * struct s3c_pllval - PLL value entry. + * @freq: The frequency for this entry in Hz. + * @pll_reg: The PLL register setting for this PLL value. + */ +struct s3c_pllval { + unsigned long freq; + unsigned long pll_reg; +}; + +/** + * struct s3c_cpufreq_board - per-board cpu frequency informatin + * @refresh: The SDRAM refresh period in nanoseconds. + * @auto_io: Set if the IO timing settings should be generated from the + * initialisation time hardware registers. + * @need_io: Set if the board has external IO on any of the chipselect + * lines that will require the hardware timing registers to be + * updated on a clock change. + * @max: The maxium frequency limits for the system. Any field that + * is left at zero will use the CPU's settings. + * + * This contains the board specific settings that affect how the CPU + * drivers chose settings. These include the memory refresh and IO + * timing information. + * + * Registration depends on the driver being used, the ARMCLK only + * implementation does not currently need this but the older style + * driver requires this to be available. + */ +struct s3c_cpufreq_board { + unsigned int refresh; + unsigned int auto_io:1; /* automatically init io timings. */ + unsigned int need_io:1; /* set if needs io timing support. */ + + /* any non-zero field in here is taken as an upper limit. */ + struct s3c_freq max; /* frequency limits */ +}; + +/* Things depending on frequency scaling. */ +#ifdef CONFIG_ARM_S3C_CPUFREQ +#define __init_or_cpufreq +#else +#define __init_or_cpufreq __init +#endif + +/* Board functions */ + +#ifdef CONFIG_ARM_S3C_CPUFREQ +extern int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board); +#else + +static inline int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board) +{ + return 0; +} +#endif /* CONFIG_ARM_S3C_CPUFREQ */ diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h new file mode 100644 index 000000000..fadcddbea --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Copyright (c) 2004-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for Samsung CPU support + */ + +/* todo - fix when rmk changes iodescs to use `void __iomem *` */ + +#ifndef __SAMSUNG_PLAT_CPU_H +#define __SAMSUNG_PLAT_CPU_H + +extern unsigned long samsung_cpu_id; + +#define S3C2410_CPU_ID 0x32410000 +#define S3C2410_CPU_MASK 0xFFFFFFFF + +#define S3C24XX_CPU_ID 0x32400000 +#define S3C24XX_CPU_MASK 0xFFF00000 + +#define S3C2412_CPU_ID 0x32412000 +#define S3C2412_CPU_MASK 0xFFFFF000 + +#define S3C6400_CPU_ID 0x36400000 +#define S3C6410_CPU_ID 0x36410000 +#define S3C64XX_CPU_MASK 0xFFFFF000 + +#define S5PV210_CPU_ID 0x43110000 +#define S5PV210_CPU_MASK 0xFFFFF000 + +#define IS_SAMSUNG_CPU(name, id, mask) \ +static inline int is_samsung_##name(void) \ +{ \ + return ((samsung_cpu_id & mask) == (id & mask)); \ +} + +IS_SAMSUNG_CPU(s3c2410, S3C2410_CPU_ID, S3C2410_CPU_MASK) +IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK) +IS_SAMSUNG_CPU(s3c2412, S3C2412_CPU_ID, S3C2412_CPU_MASK) +IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK) +IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK) + +#if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \ + defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2440) || \ + defined(CONFIG_CPU_S3C2442) || defined(CONFIG_CPU_S3C244X) || \ + defined(CONFIG_CPU_S3C2443) +# define soc_is_s3c24xx() is_samsung_s3c24xx() +# define soc_is_s3c2410() is_samsung_s3c2410() +#else +# define soc_is_s3c24xx() 0 +# define soc_is_s3c2410() 0 +#endif + +#if defined(CONFIG_CPU_S3C2412) +# define soc_is_s3c2412() is_samsung_s3c2412() +#else +# define soc_is_s3c2412() 0 +#endif + +#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410) +# define soc_is_s3c6400() is_samsung_s3c6400() +# define soc_is_s3c6410() is_samsung_s3c6410() +# define soc_is_s3c64xx() (is_samsung_s3c6400() || is_samsung_s3c6410()) +#else +# define soc_is_s3c6400() 0 +# define soc_is_s3c6410() 0 +# define soc_is_s3c64xx() 0 +#endif + +#define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE } + +#ifndef KHZ +#define KHZ (1000) +#endif + +#ifndef MHZ +#define MHZ (1000*1000) +#endif + +#define print_mhz(m) ((m) / MHZ), (((m) / 1000) % 1000) + +/* forward declaration */ +struct s3c24xx_uart_resources; +struct platform_device; +struct s3c2410_uartcfg; +struct map_desc; + +/* per-cpu initialisation function table. */ + +struct cpu_table { + unsigned long idcode; + unsigned long idmask; + void (*map_io)(void); + void (*init_uarts)(struct s3c2410_uartcfg *cfg, int no); + void (*init_clocks)(int xtal); + int (*init)(void); + const char *name; +}; + +extern void s3c_init_cpu(unsigned long idcode, + struct cpu_table *cpus, unsigned int cputab_size); + +/* core initialisation functions */ + +extern void s3c24xx_init_io(struct map_desc *mach_desc, int size); + +extern void s3c64xx_init_cpu(void); +extern void s5p_init_cpu(const void __iomem *cpuid_addr); + +extern unsigned int samsung_rev(void); + +extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c24xx_init_clocks(int xtal); + +extern void s3c24xx_init_uartdevs(char *name, + struct s3c24xx_uart_resources *res, + struct s3c2410_uartcfg *cfg, int no); + +extern struct syscore_ops s3c2410_pm_syscore_ops; +extern struct syscore_ops s3c2412_pm_syscore_ops; +extern struct syscore_ops s3c2416_pm_syscore_ops; +extern struct syscore_ops s3c244x_pm_syscore_ops; + +/* system device subsystems */ + +extern struct bus_type s3c2410_subsys; +extern struct bus_type s3c2410a_subsys; +extern struct bus_type s3c2412_subsys; +extern struct bus_type s3c2416_subsys; +extern struct bus_type s3c2440_subsys; +extern struct bus_type s3c2442_subsys; +extern struct bus_type s3c2443_subsys; +extern struct bus_type s3c6410_subsys; + +#endif diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h new file mode 100644 index 000000000..02b0c5750 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/devs.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for s3c2410 standard platform devices + */ + +#ifndef __PLAT_DEVS_H +#define __PLAT_DEVS_H __FILE__ + +#include <linux/platform_device.h> + +struct s3c24xx_uart_resources { + struct resource *resources; + unsigned long nr_resources; +}; + +extern struct s3c24xx_uart_resources s3c2410_uart_resources[]; +extern struct s3c24xx_uart_resources s3c64xx_uart_resources[]; + +extern struct platform_device *s3c24xx_uart_devs[]; +extern struct platform_device *s3c24xx_uart_src[]; + +extern struct platform_device s3c64xx_device_ac97; +extern struct platform_device s3c64xx_device_iis0; +extern struct platform_device s3c64xx_device_iis1; +extern struct platform_device s3c64xx_device_iisv4; +extern struct platform_device s3c64xx_device_onenand1; +extern struct platform_device s3c64xx_device_pcm0; +extern struct platform_device s3c64xx_device_pcm1; +extern struct platform_device s3c64xx_device_spi0; +extern struct platform_device s3c64xx_device_spi1; +extern struct platform_device s3c64xx_device_spi2; + +extern struct platform_device s3c_device_adc; +extern struct platform_device s3c_device_cfcon; +extern struct platform_device s3c_device_fb; +extern struct platform_device s3c_device_hwmon; +extern struct platform_device s3c_device_hsmmc0; +extern struct platform_device s3c_device_hsmmc1; +extern struct platform_device s3c_device_hsmmc2; +extern struct platform_device s3c_device_hsmmc3; +extern struct platform_device s3c_device_i2c0; +extern struct platform_device s3c_device_i2c1; +extern struct platform_device s3c_device_i2c2; +extern struct platform_device s3c_device_i2c3; +extern struct platform_device s3c_device_i2c4; +extern struct platform_device s3c_device_i2c5; +extern struct platform_device s3c_device_i2c6; +extern struct platform_device s3c_device_i2c7; +extern struct platform_device s3c_device_iis; +extern struct platform_device s3c_device_lcd; +extern struct platform_device s3c_device_nand; +extern struct platform_device s3c_device_ohci; +extern struct platform_device s3c_device_onenand; +extern struct platform_device s3c_device_rtc; +extern struct platform_device s3c_device_sdi; +extern struct platform_device s3c_device_spi0; +extern struct platform_device s3c_device_spi1; +extern struct platform_device s3c_device_ts; +extern struct platform_device s3c_device_timer[]; +extern struct platform_device s3c_device_usbgadget; +extern struct platform_device s3c_device_usb_hsotg; +extern struct platform_device s3c_device_usb_hsudc; +extern struct platform_device s3c_device_wdt; + +extern struct platform_device samsung_asoc_idma; +extern struct platform_device samsung_device_keypad; +extern struct platform_device samsung_device_pwm; + +/* s3c2440 specific devices */ + +#ifdef CONFIG_CPU_S3C2440 + +extern struct platform_device s3c_device_camif; +extern struct platform_device s3c_device_ac97; + +#endif + +/** + * s3c_set_platdata() - helper for setting platform data + * @pd: The default platform data for this device. + * @pdsize: The size of the platform data. + * @pdev: Pointer to the device to fill in. + * + * This helper replaces a number of calls that copy and then set the + * platform data of the device. + */ +extern void *s3c_set_platdata(void *pd, size_t pdsize, + struct platform_device *pdev); + +#endif /* __PLAT_DEVS_H */ diff --git a/arch/arm/plat-samsung/include/plat/fb-s3c2410.h b/arch/arm/plat-samsung/include/plat/fb-s3c2410.h new file mode 100644 index 000000000..614240d76 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/fb-s3c2410.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2004 Arnaud Patard <arnaud.patard@rtp-net.org> + * + * Inspired by pxafb.h +*/ + +#ifndef __ASM_PLAT_FB_S3C2410_H +#define __ASM_PLAT_FB_S3C2410_H __FILE__ + +struct s3c2410fb_hw { + unsigned long lcdcon1; + unsigned long lcdcon2; + unsigned long lcdcon3; + unsigned long lcdcon4; + unsigned long lcdcon5; +}; + +/* LCD description */ +struct s3c2410fb_display { + /* LCD type */ + unsigned type; + + /* Screen size */ + unsigned short width; + unsigned short height; + + /* Screen info */ + unsigned short xres; + unsigned short yres; + unsigned short bpp; + + unsigned pixclock; /* pixclock in picoseconds */ + unsigned short left_margin; /* value in pixels (TFT) or HCLKs (STN) */ + unsigned short right_margin; /* value in pixels (TFT) or HCLKs (STN) */ + unsigned short hsync_len; /* value in pixels (TFT) or HCLKs (STN) */ + unsigned short upper_margin; /* value in lines (TFT) or 0 (STN) */ + unsigned short lower_margin; /* value in lines (TFT) or 0 (STN) */ + unsigned short vsync_len; /* value in lines (TFT) or 0 (STN) */ + + /* lcd configuration registers */ + unsigned long lcdcon5; +}; + +struct s3c2410fb_mach_info { + + struct s3c2410fb_display *displays; /* attached displays info */ + unsigned num_displays; /* number of defined displays */ + unsigned default_display; + + /* GPIOs */ + + unsigned long gpcup; + unsigned long gpcup_mask; + unsigned long gpccon; + unsigned long gpccon_mask; + unsigned long gpdup; + unsigned long gpdup_mask; + unsigned long gpdcon; + unsigned long gpdcon_mask; + + /* lpc3600 control register */ + unsigned long lpcsel; +}; + +extern void __init s3c24xx_fb_set_platdata(struct s3c2410fb_mach_info *); + +#endif /* __ASM_PLAT_FB_S3C2410_H */ diff --git a/arch/arm/plat-samsung/include/plat/fb.h b/arch/arm/plat-samsung/include/plat/fb.h new file mode 100644 index 000000000..615d381ae --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/fb.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C - FB platform data definitions + */ + +#ifndef __PLAT_S3C_FB_H +#define __PLAT_S3C_FB_H __FILE__ + +#include <linux/platform_data/video_s3c.h> + +/** + * s3c_fb_set_platdata() - Setup the FB device with platform data. + * @pd: The platform data to set. The data is copied from the passed structure + * so the machine data can mark the data __initdata so that any unused + * machines will end up dumping their data at runtime. + */ +extern void s3c_fb_set_platdata(struct s3c_fb_platdata *pd); + +/** + * s3c64xx_fb_gpio_setup_24bpp() - S3C64XX setup function for 24bpp LCD + * + * Initialise the GPIO for an 24bpp LCD display on the RGB interface. + */ +extern void s3c64xx_fb_gpio_setup_24bpp(void); + +#endif /* __PLAT_S3C_FB_H */ diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h b/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h new file mode 100644 index 000000000..db0c56f5c --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h @@ -0,0 +1,159 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * Samsung Platform - GPIO pin configuration helper definitions + */ + +/* This is meant for core cpu support, machine or other driver files + * should not be including this header. + */ + +#ifndef __PLAT_GPIO_CFG_HELPERS_H +#define __PLAT_GPIO_CFG_HELPERS_H __FILE__ + +/* As a note, all gpio configuration functions are entered exclusively, either + * with the relevant lock held or the system prevented from doing anything else + * by disabling interrupts. +*/ + +static inline int samsung_gpio_do_setcfg(struct samsung_gpio_chip *chip, + unsigned int off, unsigned int config) +{ + return (chip->config->set_config)(chip, off, config); +} + +static inline unsigned samsung_gpio_do_getcfg(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return (chip->config->get_config)(chip, off); +} + +static inline int samsung_gpio_do_setpull(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + return (chip->config->set_pull)(chip, off, pull); +} + +static inline samsung_gpio_pull_t samsung_gpio_do_getpull(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return chip->config->get_pull(chip, off); +} + +/* Pull-{up,down} resistor controls. + * + * S3C2410,S3C2440 = Pull-UP, + * S3C2412,S3C2413 = Pull-Down + * S3C6400,S3C6410 = Pull-Both [None,Down,Up,Undef] + * S3C2443 = Pull-Both [not same as S3C6400] + */ + +/** + * s3c24xx_gpio_setpull_1up() - Pull configuration for choice of up or none. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with one + * bit configuring the presence of a pull-up resistor. + */ +extern int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * s3c24xx_gpio_setpull_1down() - Pull configuration for choice of down or none + * @chip: The gpio chip that is being configured + * @off: The offset for the GPIO being configured + * @param: pull: The pull mode being requested + * + * This is a helper function for the case where we have GPIOs with one + * bit configuring the presence of a pull-down resistor. + */ +extern int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * samsung_gpio_setpull_upown() - Pull configuration for choice of up, + * down or none + * + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with two + * bits configuring the presence of a pull resistor, in the following + * order: + * 00 = No pull resistor connected + * 01 = Pull-up resistor connected + * 10 = Pull-down resistor connected + */ +extern int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * samsung_gpio_getpull_updown() - Get configuration for choice of up, + * down or none + * + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-{up,down} resistor + * for the given GPIO in the same case as samsung_gpio_setpull_upown. +*/ +extern samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c24xx_gpio_getpull_1up() - Get configuration for choice of up or none + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-up resistor for the + * given GPIO in the same case as s3c24xx_gpio_setpull_1up. +*/ +extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c24xx_gpio_getpull_1down() - Get configuration for choice of down or none + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-down resistor for the + * given GPIO in the same case as s3c24xx_gpio_setpull_1down. +*/ +extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c2443_gpio_setpull() - Pull configuration for s3c2443. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with two + * bits configuring the presence of a pull resistor, in the following + * order: + * 00 = Pull-up resistor connected + * 10 = Pull-down resistor connected + * x1 = No pull up resistor + */ +extern int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * s3c2443_gpio_getpull() - Get configuration for s3c2443 pull resistors + * @chip: The gpio chip that the GPIO pin belongs to. + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-{up,down} resistor for the + * given GPIO in the same case as samsung_gpio_setpull_upown. +*/ +extern samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip, + unsigned int off); + +#endif /* __PLAT_GPIO_CFG_HELPERS_H */ diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h new file mode 100644 index 000000000..469c220e0 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h @@ -0,0 +1,178 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C Platform - GPIO pin configuration + */ + +/* This file contains the necessary definitions to get the basic gpio + * pin configuration done such as setting a pin to input or output or + * changing the pull-{up,down} configurations. + */ + +/* Note, this interface is being added to the s3c64xx arch first and will + * be added to the s3c24xx systems later. + */ + +#ifndef __PLAT_GPIO_CFG_H +#define __PLAT_GPIO_CFG_H __FILE__ + +#include <linux/types.h> + +typedef unsigned int __bitwise samsung_gpio_pull_t; + +/* forward declaration if gpio-core.h hasn't been included */ +struct samsung_gpio_chip; + +/** + * struct samsung_gpio_cfg GPIO configuration + * @cfg_eint: Configuration setting when used for external interrupt source + * @get_pull: Read the current pull configuration for the GPIO + * @set_pull: Set the current pull configuration for the GPIO + * @set_config: Set the current configuration for the GPIO + * @get_config: Read the current configuration for the GPIO + * + * Each chip can have more than one type of GPIO bank available and some + * have different capabilites even when they have the same control register + * layouts. Provide an point to vector control routine and provide any + * per-bank configuration information that other systems such as the + * external interrupt code will need. + * + * @sa samsung_gpio_cfgpin + * @sa s3c_gpio_getcfg + * @sa s3c_gpio_setpull + * @sa s3c_gpio_getpull + */ +struct samsung_gpio_cfg { + unsigned int cfg_eint; + + samsung_gpio_pull_t (*get_pull)(struct samsung_gpio_chip *chip, unsigned offs); + int (*set_pull)(struct samsung_gpio_chip *chip, unsigned offs, + samsung_gpio_pull_t pull); + + unsigned (*get_config)(struct samsung_gpio_chip *chip, unsigned offs); + int (*set_config)(struct samsung_gpio_chip *chip, unsigned offs, + unsigned config); +}; + +#define S3C_GPIO_SPECIAL_MARK (0xfffffff0) +#define S3C_GPIO_SPECIAL(x) (S3C_GPIO_SPECIAL_MARK | (x)) + +/* Defines for generic pin configurations */ +#define S3C_GPIO_INPUT (S3C_GPIO_SPECIAL(0)) +#define S3C_GPIO_OUTPUT (S3C_GPIO_SPECIAL(1)) +#define S3C_GPIO_SFN(x) (S3C_GPIO_SPECIAL(x)) + +#define samsung_gpio_is_cfg_special(_cfg) \ + (((_cfg) & S3C_GPIO_SPECIAL_MARK) == S3C_GPIO_SPECIAL_MARK) + +/** + * s3c_gpio_cfgpin() - Change the GPIO function of a pin. + * @pin pin The pin number to configure. + * @to to The configuration for the pin's function. + * + * Configure which function is actually connected to the external + * pin, such as an gpio input, output or some form of special function + * connected to an internal peripheral block. + * + * The @to parameter can be one of the generic S3C_GPIO_INPUT, S3C_GPIO_OUTPUT + * or S3C_GPIO_SFN() to indicate one of the possible values that the helper + * will then generate the correct bit mask and shift for the configuration. + * + * If a bank of GPIOs all needs to be set to special-function 2, then + * the following code will work: + * + * for (gpio = start; gpio < end; gpio++) + * s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + * + * The @to parameter can also be a specific value already shifted to the + * correct position in the control register, although these are discouraged + * in newer kernels and are only being kept for compatibility. + */ +extern int s3c_gpio_cfgpin(unsigned int pin, unsigned int to); + +/** + * s3c_gpio_getcfg - Read the current function for a GPIO pin + * @pin: The pin to read the configuration value for. + * + * Read the configuration state of the given @pin, returning a value that + * could be passed back to s3c_gpio_cfgpin(). + * + * @sa s3c_gpio_cfgpin + */ +extern unsigned s3c_gpio_getcfg(unsigned int pin); + +/** + * s3c_gpio_cfgpin_range() - Change the GPIO function for configuring pin range + * @start: The pin number to start at + * @nr: The number of pins to configure from @start. + * @cfg: The configuration for the pin's function + * + * Call s3c_gpio_cfgpin() for the @nr pins starting at @start. + * + * @sa s3c_gpio_cfgpin. + */ +extern int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr, + unsigned int cfg); + +/* Define values for the pull-{up,down} available for each gpio pin. + * + * These values control the state of the weak pull-{up,down} resistors + * available on most pins on the S3C series. Not all chips support both + * up or down settings, and it may be dependent on the chip that is being + * used to whether the particular mode is available. + */ +#define S3C_GPIO_PULL_NONE ((__force samsung_gpio_pull_t)0x00) +#define S3C_GPIO_PULL_DOWN ((__force samsung_gpio_pull_t)0x01) +#define S3C_GPIO_PULL_UP ((__force samsung_gpio_pull_t)0x02) + +/** + * s3c_gpio_setpull() - set the state of a gpio pin pull resistor + * @pin: The pin number to configure the pull resistor. + * @pull: The configuration for the pull resistor. + * + * This function sets the state of the pull-{up,down} resistor for the + * specified pin. It will return 0 if successful, or a negative error + * code if the pin cannot support the requested pull setting. + * + * @pull is one of S3C_GPIO_PULL_NONE, S3C_GPIO_PULL_DOWN or S3C_GPIO_PULL_UP. +*/ +extern int s3c_gpio_setpull(unsigned int pin, samsung_gpio_pull_t pull); + +/** + * s3c_gpio_getpull() - get the pull resistor state of a gpio pin + * @pin: The pin number to get the settings for + * + * Read the pull resistor value for the specified pin. +*/ +extern samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin); + +/* configure `all` aspects of an gpio */ + +/** + * s3c_gpio_cfgall_range() - configure range of gpio functtion and pull. + * @start: The gpio number to start at. + * @nr: The number of gpio to configure from @start. + * @cfg: The configuration to use + * @pull: The pull setting to use. + * + * Run s3c_gpio_cfgpin() and s3c_gpio_setpull() over the gpio range starting + * @gpio and running for @size. + * + * @sa s3c_gpio_cfgpin + * @sa s3c_gpio_setpull + * @sa s3c_gpio_cfgpin_range + */ +extern int s3c_gpio_cfgall_range(unsigned int start, unsigned int nr, + unsigned int cfg, samsung_gpio_pull_t pull); + +static inline int s3c_gpio_cfgrange_nopull(unsigned int pin, unsigned int size, + unsigned int cfg) +{ + return s3c_gpio_cfgall_range(pin, size, cfg, S3C_GPIO_PULL_NONE); +} + +#endif /* __PLAT_GPIO_CFG_H */ diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h new file mode 100644 index 000000000..51e721f5e --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/gpio-core.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C Platform - GPIO core + */ + +#ifndef __PLAT_SAMSUNG_GPIO_CORE_H +#define __PLAT_SAMSUNG_GPIO_CORE_H + +/* Bring in machine-local definitions, especially S3C_GPIO_END */ +#include <mach/gpio-samsung.h> + +#define GPIOCON_OFF (0x00) +#define GPIODAT_OFF (0x04) + +#define con_4bit_shift(__off) ((__off) * 4) + +/* Define the core gpiolib support functions that the s3c platforms may + * need to extend or change depending on the hardware and the s3c chip + * selected at build or found at run time. + * + * These definitions are not intended for driver inclusion, there is + * nothing here that should not live outside the platform and core + * specific code. +*/ + +struct samsung_gpio_chip; + +/** + * struct samsung_gpio_pm - power management (suspend/resume) information + * @save: Routine to save the state of the GPIO block + * @resume: Routine to resume the GPIO block. + */ +struct samsung_gpio_pm { + void (*save)(struct samsung_gpio_chip *chip); + void (*resume)(struct samsung_gpio_chip *chip); +}; + +struct samsung_gpio_cfg; + +/** + * struct samsung_gpio_chip - wrapper for specific implementation of gpio + * @chip: The chip structure to be exported via gpiolib. + * @base: The base pointer to the gpio configuration registers. + * @group: The group register number for gpio interrupt support. + * @irq_base: The base irq number. + * @config: special function and pull-resistor control information. + * @lock: Lock for exclusive access to this gpio bank. + * @pm_save: Save information for suspend/resume support. + * @bitmap_gpio_int: Bitmap for representing GPIO interrupt or not. + * + * This wrapper provides the necessary information for the Samsung + * specific gpios being registered with gpiolib. + * + * The lock protects each gpio bank from multiple access of the shared + * configuration registers, or from reading of data whilst another thread + * is writing to the register set. + * + * Each chip has its own lock to avoid any contention between different + * CPU cores trying to get one lock for different GPIO banks, where each + * bank of GPIO has its own register space and configuration registers. + */ +struct samsung_gpio_chip { + struct gpio_chip chip; + struct samsung_gpio_cfg *config; + struct samsung_gpio_pm *pm; + void __iomem *base; + int irq_base; + int group; + spinlock_t lock; +#ifdef CONFIG_PM + u32 pm_save[4]; +#endif + u32 bitmap_gpio_int; +}; + +static inline struct samsung_gpio_chip *to_samsung_gpio(struct gpio_chip *gpc) +{ + return container_of(gpc, struct samsung_gpio_chip, chip); +} + +/** + * samsung_gpiolib_to_irq - convert gpio pin to irq number + * @chip: The gpio chip that the pin belongs to. + * @offset: The offset of the pin in the chip. + * + * This helper returns the irq number calculated from the chip->irq_base and + * the provided offset. + */ +extern int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset); + +/* exported for core SoC support to change */ +extern struct samsung_gpio_cfg s3c24xx_gpiocfg_default; + +#ifdef CONFIG_S3C_GPIO_TRACK +extern struct samsung_gpio_chip *s3c_gpios[S3C_GPIO_END]; + +static inline struct samsung_gpio_chip *samsung_gpiolib_getchip(unsigned int chip) +{ + return (chip < S3C_GPIO_END) ? s3c_gpios[chip] : NULL; +} +#else +/* machine specific code should provide samsung_gpiolib_getchip */ + +extern struct samsung_gpio_chip s3c24xx_gpios[]; + +static inline struct samsung_gpio_chip *samsung_gpiolib_getchip(unsigned int pin) +{ + struct samsung_gpio_chip *chip; + + if (pin > S3C_GPIO_END) + return NULL; + + chip = &s3c24xx_gpios[pin/32]; + return ((pin - chip->chip.base) < chip->chip.ngpio) ? chip : NULL; +} + +static inline void s3c_gpiolib_track(struct samsung_gpio_chip *chip) { } +#endif + +#ifdef CONFIG_PM +extern struct samsung_gpio_pm samsung_gpio_pm_1bit; +extern struct samsung_gpio_pm samsung_gpio_pm_2bit; +extern struct samsung_gpio_pm samsung_gpio_pm_4bit; +#define __gpio_pm(x) x +#else +#define samsung_gpio_pm_1bit NULL +#define samsung_gpio_pm_2bit NULL +#define samsung_gpio_pm_4bit NULL +#define __gpio_pm(x) NULL + +#endif /* CONFIG_PM */ + +/* locking wrappers to deal with multiple access to the same gpio bank */ +#define samsung_gpio_lock(_oc, _fl) spin_lock_irqsave(&(_oc)->lock, _fl) +#define samsung_gpio_unlock(_oc, _fl) spin_unlock_irqrestore(&(_oc)->lock, _fl) + +#endif /* __PLAT_SAMSUNG_GPIO_CORE_H */ diff --git a/arch/arm/plat-samsung/include/plat/iic-core.h b/arch/arm/plat-samsung/include/plat/iic-core.h new file mode 100644 index 000000000..c5cfd5af3 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/iic-core.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C - I2C Controller core functions + */ + +#ifndef __ASM_ARCH_IIC_CORE_H +#define __ASM_ARCH_IIC_CORE_H __FILE__ + +/* These functions are only for use with the core support code, such as + * the cpu specific initialisation code + */ + +/* re-define device name depending on support. */ +static inline void s3c_i2c0_setname(char *name) +{ + /* currently this device is always compiled in */ + s3c_device_i2c0.name = name; +} + +static inline void s3c_i2c1_setname(char *name) +{ +#ifdef CONFIG_S3C_DEV_I2C1 + s3c_device_i2c1.name = name; +#endif +} + +static inline void s3c_i2c2_setname(char *name) +{ +#ifdef CONFIG_S3C_DEV_I2C2 + s3c_device_i2c2.name = name; +#endif +} + +#endif /* __ASM_ARCH_IIC_H */ diff --git a/arch/arm/plat-samsung/include/plat/keypad.h b/arch/arm/plat-samsung/include/plat/keypad.h new file mode 100644 index 000000000..9754b9a29 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/keypad.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Samsung Platform - Keypad platform data definitions + * + * Copyright (C) 2010 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim <jy0922.shim@samsung.com> + */ + +#ifndef __PLAT_SAMSUNG_KEYPAD_H +#define __PLAT_SAMSUNG_KEYPAD_H + +#include <linux/input/samsung-keypad.h> + +/** + * samsung_keypad_set_platdata - Set platform data for Samsung Keypad device. + * @pd: Platform data to register to device. + * + * Register the given platform data for use with Samsung Keypad device. + * The call will copy the platform data, so the board definitions can + * make the structure itself __initdata. + */ +extern void samsung_keypad_set_platdata(struct samsung_keypad_platdata *pd); + +/* defined by architecture to configure gpio. */ +extern void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols); + +#endif /* __PLAT_SAMSUNG_KEYPAD_H */ diff --git a/arch/arm/plat-samsung/include/plat/map-base.h b/arch/arm/plat-samsung/include/plat/map-base.h new file mode 100644 index 000000000..34b39ded0 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/map-base.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2003, 2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C - Memory map definitions (virtual addresses) + */ + +#ifndef __ASM_PLAT_MAP_H +#define __ASM_PLAT_MAP_H __FILE__ + +/* Fit all our registers in at 0xF6000000 upwards, trying to use as + * little of the VA space as possible so vmalloc and friends have a + * better chance of getting memory. + * + * we try to ensure stuff like the IRQ registers are available for + * an single MOVS instruction (ie, only 8 bits of set data) + */ + +#define S3C_ADDR_BASE 0xF6000000 + +#ifndef __ASSEMBLY__ +#define S3C_ADDR(x) ((void __iomem __force *)S3C_ADDR_BASE + (x)) +#else +#define S3C_ADDR(x) (S3C_ADDR_BASE + (x)) +#endif + +#define S3C_VA_IRQ S3C_ADDR(0x00000000) /* irq controller(s) */ +#define S3C_VA_SYS S3C_ADDR(0x00100000) /* system control */ +#define S3C_VA_MEM S3C_ADDR(0x00200000) /* memory control */ +#define S3C_VA_TIMER S3C_ADDR(0x00300000) /* timer block */ +#define S3C_VA_WATCHDOG S3C_ADDR(0x00400000) /* watchdog */ +#define S3C_VA_UART S3C_ADDR(0x01000000) /* UART */ + +/* This is used for the CPU specific mappings that may be needed, so that + * they do not need to directly used S3C_ADDR() and thus make it easier to + * modify the space for mapping. + */ +#define S3C_ADDR_CPU(x) S3C_ADDR(0x00500000 + (x)) + +#endif /* __ASM_PLAT_MAP_H */ diff --git a/arch/arm/plat-samsung/include/plat/map-s3c.h b/arch/arm/plat-samsung/include/plat/map-s3c.h new file mode 100644 index 000000000..4244acbf4 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/map-s3c.h @@ -0,0 +1,76 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX - Memory map definitions + */ + +#ifndef __ASM_PLAT_MAP_S3C_H +#define __ASM_PLAT_MAP_S3C_H __FILE__ + +#define S3C24XX_VA_IRQ S3C_VA_IRQ +#define S3C24XX_VA_MEMCTRL S3C_VA_MEM +#define S3C24XX_VA_UART S3C_VA_UART + +#define S3C24XX_VA_TIMER S3C_VA_TIMER +#define S3C24XX_VA_CLKPWR S3C_VA_SYS +#define S3C24XX_VA_WATCHDOG S3C_VA_WATCHDOG + +#define S3C2412_VA_SSMC S3C_ADDR_CPU(0x00000000) +#define S3C2412_VA_EBI S3C_ADDR_CPU(0x00100000) + +#define S3C2410_PA_UART (0x50000000) +#define S3C24XX_PA_UART S3C2410_PA_UART + +/* + * GPIO ports + * + * the calculation for the VA of this must ensure that + * it is the same distance apart from the UART in the + * phsyical address space, as the initial mapping for the IO + * is done as a 1:1 mapping. This puts it (currently) at + * 0xFA800000, which is not in the way of any current mapping + * by the base system. +*/ + +#define S3C2410_PA_GPIO (0x56000000) +#define S3C24XX_PA_GPIO S3C2410_PA_GPIO + +#define S3C24XX_VA_GPIO ((S3C24XX_PA_GPIO - S3C24XX_PA_UART) + S3C24XX_VA_UART) +#define S3C64XX_VA_GPIO S3C_ADDR_CPU(0x00000000) + +#define S3C64XX_VA_MODEM S3C_ADDR_CPU(0x00100000) +#define S3C64XX_VA_USB_HSPHY S3C_ADDR_CPU(0x00200000) + +#define S3C_VA_USB_HSPHY S3C64XX_VA_USB_HSPHY + +/* + * ISA style IO, for each machine to sort out mappings for, + * if it implements it. We reserve two 16M regions for ISA. + */ + +#define S3C2410_ADDR(x) S3C_ADDR(x) + +#define S3C24XX_VA_ISA_WORD S3C2410_ADDR(0x02000000) +#define S3C24XX_VA_ISA_BYTE S3C2410_ADDR(0x03000000) + +/* deal with the registers that move under the 2412/2413 */ + +#if defined(CONFIG_CPU_S3C2412) +#ifndef __ASSEMBLY__ +extern void __iomem *s3c24xx_va_gpio2; +#endif +#ifdef CONFIG_CPU_S3C2412_ONLY +#define S3C24XX_VA_GPIO2 (S3C24XX_VA_GPIO + 0x10) +#else +#define S3C24XX_VA_GPIO2 s3c24xx_va_gpio2 +#endif +#else +#define s3c24xx_va_gpio2 S3C24XX_VA_GPIO +#define S3C24XX_VA_GPIO2 S3C24XX_VA_GPIO +#endif + +#include <plat/map-s5p.h> + +#endif /* __ASM_PLAT_MAP_S3C_H */ diff --git a/arch/arm/plat-samsung/include/plat/map-s5p.h b/arch/arm/plat-samsung/include/plat/map-s5p.h new file mode 100644 index 000000000..d69a0ca09 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/map-s5p.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P - Memory map definitions + */ + +#ifndef __ASM_PLAT_MAP_S5P_H +#define __ASM_PLAT_MAP_S5P_H __FILE__ + +#define S5P_VA_CHIPID S3C_ADDR(0x02000000) + +#define VA_VIC(x) (S3C_VA_IRQ + ((x) * 0x10000)) +#define VA_VIC0 VA_VIC(0) +#define VA_VIC1 VA_VIC(1) +#define VA_VIC2 VA_VIC(2) +#define VA_VIC3 VA_VIC(3) + +#include <plat/map-s3c.h> + +#endif /* __ASM_PLAT_MAP_S5P_H */ diff --git a/arch/arm/plat-samsung/include/plat/pm-common.h b/arch/arm/plat-samsung/include/plat/pm-common.h new file mode 100644 index 000000000..1268bae04 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/pm-common.h @@ -0,0 +1,107 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Tomasz Figa <t.figa@samsung.com> + * Copyright (c) 2004 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Written by Ben Dooks, <ben@simtec.co.uk> + */ + +#ifndef __PLAT_SAMSUNG_PM_COMMON_H +#define __PLAT_SAMSUNG_PM_COMMON_H __FILE__ + +#include <linux/irq.h> + +/* sleep save info */ + +/** + * struct sleep_save - save information for shared peripherals. + * @reg: Pointer to the register to save. + * @val: Holder for the value saved from reg. + * + * This describes a list of registers which is used by the pm core and + * other subsystem to save and restore register values over suspend. + */ +struct sleep_save { + void __iomem *reg; + unsigned long val; +}; + +#define SAVE_ITEM(x) \ + { .reg = (x) } + +/* helper functions to save/restore lists of registers. */ + +extern void s3c_pm_do_save(struct sleep_save *ptr, int count); +extern void s3c_pm_do_restore(const struct sleep_save *ptr, int count); +extern void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count); + +/* PM debug functions */ + +/** + * struct pm_uart_save - save block for core UART + * @ulcon: Save value for S3C2410_ULCON + * @ucon: Save value for S3C2410_UCON + * @ufcon: Save value for S3C2410_UFCON + * @umcon: Save value for S3C2410_UMCON + * @ubrdiv: Save value for S3C2410_UBRDIV + * + * Save block for UART registers to be held over sleep and restored if they + * are needed (say by debug). +*/ +struct pm_uart_save { + u32 ulcon; + u32 ucon; + u32 ufcon; + u32 umcon; + u32 ubrdiv; + u32 udivslot; +}; + +#ifdef CONFIG_SAMSUNG_PM_DEBUG +/** + * s3c_pm_dbg() - low level debug function for use in suspend/resume. + * @msg: The message to print. + * + * This function is used mainly to debug the resume process before the system + * can rely on printk/console output. It uses the low-level debugging output + * routine printascii() to do its work. + */ +extern void s3c_pm_dbg(const char *msg, ...); + +/** + * s3c_pm_debug_init() - suspend/resume low level debug initialization. + * @base: Virtual base of UART to use for suspend/resume debugging. + * + * This function needs to be called before S3C_PMDBG() can be used, to set up + * UART port base address and configuration. + */ +extern void s3c_pm_debug_init(void); + +#define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) + +extern void s3c_pm_save_uarts(void); +extern void s3c_pm_restore_uarts(void); +#else +#define S3C_PMDBG(fmt...) pr_debug(fmt) +#define s3c_pm_debug_init() do { } while (0) + +static inline void s3c_pm_save_uarts(void) { } +static inline void s3c_pm_restore_uarts(void) { } +#endif + +/* suspend memory checking */ + +#ifdef CONFIG_SAMSUNG_PM_CHECK +extern void s3c_pm_check_prepare(void); +extern void s3c_pm_check_restore(void); +extern void s3c_pm_check_cleanup(void); +extern void s3c_pm_check_store(void); +#else +#define s3c_pm_check_prepare() do { } while (0) +#define s3c_pm_check_restore() do { } while (0) +#define s3c_pm_check_cleanup() do { } while (0) +#define s3c_pm_check_store() do { } while (0) +#endif + +#endif diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h new file mode 100644 index 000000000..2746137f9 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/pm.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2004 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Written by Ben Dooks, <ben@simtec.co.uk> + */ + +/* s3c_pm_init + * + * called from board at initialisation time to setup the power + * management +*/ + +#include <plat/pm-common.h> + +struct device; + +#ifdef CONFIG_SAMSUNG_PM + +extern __init int s3c_pm_init(void); +extern __init int s3c64xx_pm_init(void); + +#else + +static inline int s3c_pm_init(void) +{ + return 0; +} + +static inline int s3c64xx_pm_init(void) +{ + return 0; +} +#endif + +/* configuration for the IRQ mask over sleep */ +extern unsigned long s3c_irqwake_intmask; +extern unsigned long s3c_irqwake_eintmask; + +/* per-cpu sleep functions */ + +extern void (*pm_cpu_prep)(void); +extern int (*pm_cpu_sleep)(unsigned long); + +/* Flags for PM Control */ + +extern unsigned long s3c_pm_flags; + +/* from sleep.S */ + +extern int s3c2410_cpu_suspend(unsigned long); + +#ifdef CONFIG_PM_SLEEP +extern int s3c_irq_wake(struct irq_data *data, unsigned int state); +extern void s3c_cpu_resume(void); +#else +#define s3c_irq_wake NULL +#define s3c_cpu_resume NULL +#endif + +#ifdef CONFIG_SAMSUNG_PM +extern int s3c_irqext_wake(struct irq_data *data, unsigned int state); +#else +#define s3c_irqext_wake NULL +#endif + +#ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK +/** + * s3c_pm_debug_smdkled() - Debug PM suspend/resume via SMDK Board LEDs + * @set: set bits for the state of the LEDs + * @clear: clear bits for the state of the LEDs. + */ +extern void s3c_pm_debug_smdkled(u32 set, u32 clear); + +#else +static inline void s3c_pm_debug_smdkled(u32 set, u32 clear) { } +#endif /* CONFIG_S3C_PM_DEBUG_LED_SMDK */ + +/** + * s3c_pm_configure_extint() - ensure pins are correctly set for IRQ + * + * Setup all the necessary GPIO pins for waking the system on external + * interrupt. + */ +extern void s3c_pm_configure_extint(void); + +#ifdef CONFIG_GPIO_SAMSUNG +/** + * samsung_pm_restore_gpios() - restore the state of the gpios after sleep. + * + * Restore the state of the GPIO pins after sleep, which may involve ensuring + * that we do not glitch the state of the pins from that the bootloader's + * resume code has done. +*/ +extern void samsung_pm_restore_gpios(void); + +/** + * samsung_pm_save_gpios() - save the state of the GPIOs for restoring after sleep. + * + * Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios(). + */ +extern void samsung_pm_save_gpios(void); +#else +static inline void samsung_pm_restore_gpios(void) {} +static inline void samsung_pm_save_gpios(void) {} +#endif + +extern void s3c_pm_save_core(void); +extern void s3c_pm_restore_core(void); diff --git a/arch/arm/plat-samsung/include/plat/pwm-core.h b/arch/arm/plat-samsung/include/plat/pwm-core.h new file mode 100644 index 000000000..05e344864 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/pwm-core.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2013 Tomasz Figa <tomasz.figa@gmail.com> + * + * Samsung PWM controller platform data helpers. + */ + +#ifndef __ASM_ARCH_PWM_CORE_H +#define __ASM_ARCH_PWM_CORE_H __FILE__ + +#include <clocksource/samsung_pwm.h> + +#ifdef CONFIG_SAMSUNG_DEV_PWM +extern void samsung_pwm_set_platdata(struct samsung_pwm_variant *pd); +#else +static inline void samsung_pwm_set_platdata(struct samsung_pwm_variant *pd) { } +#endif + +#endif /* __ASM_ARCH_PWM_CORE_H */ diff --git a/arch/arm/plat-samsung/include/plat/regs-adc.h b/arch/arm/plat-samsung/include/plat/regs-adc.h new file mode 100644 index 000000000..58953c738 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/regs-adc.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2004 Shannon Holland <holland@loser.net> + * + * S3C2410 ADC registers + */ + +#ifndef __ASM_ARCH_REGS_ADC_H +#define __ASM_ARCH_REGS_ADC_H "regs-adc.h" + +#define S3C2410_ADCREG(x) (x) + +#define S3C2410_ADCCON S3C2410_ADCREG(0x00) +#define S3C2410_ADCTSC S3C2410_ADCREG(0x04) +#define S3C2410_ADCDLY S3C2410_ADCREG(0x08) +#define S3C2410_ADCDAT0 S3C2410_ADCREG(0x0C) +#define S3C2410_ADCDAT1 S3C2410_ADCREG(0x10) +#define S3C64XX_ADCUPDN S3C2410_ADCREG(0x14) +#define S3C2443_ADCMUX S3C2410_ADCREG(0x18) +#define S3C64XX_ADCCLRINT S3C2410_ADCREG(0x18) +#define S5P_ADCMUX S3C2410_ADCREG(0x1C) +#define S3C64XX_ADCCLRINTPNDNUP S3C2410_ADCREG(0x20) + + +/* ADCCON Register Bits */ +#define S3C64XX_ADCCON_RESSEL (1<<16) +#define S3C2410_ADCCON_ECFLG (1<<15) +#define S3C2410_ADCCON_PRSCEN (1<<14) +#define S3C2410_ADCCON_PRSCVL(x) (((x)&0xFF)<<6) +#define S3C2410_ADCCON_PRSCVLMASK (0xFF<<6) +#define S3C2410_ADCCON_SELMUX(x) (((x)&0x7)<<3) +#define S3C2410_ADCCON_MUXMASK (0x7<<3) +#define S3C2416_ADCCON_RESSEL (1 << 3) +#define S3C2410_ADCCON_STDBM (1<<2) +#define S3C2410_ADCCON_READ_START (1<<1) +#define S3C2410_ADCCON_ENABLE_START (1<<0) +#define S3C2410_ADCCON_STARTMASK (0x3<<0) + + +/* ADCTSC Register Bits */ +#define S3C2443_ADCTSC_UD_SEN (1 << 8) +#define S3C2410_ADCTSC_YM_SEN (1<<7) +#define S3C2410_ADCTSC_YP_SEN (1<<6) +#define S3C2410_ADCTSC_XM_SEN (1<<5) +#define S3C2410_ADCTSC_XP_SEN (1<<4) +#define S3C2410_ADCTSC_PULL_UP_DISABLE (1<<3) +#define S3C2410_ADCTSC_AUTO_PST (1<<2) +#define S3C2410_ADCTSC_XY_PST(x) (((x)&0x3)<<0) + +/* ADCDAT0 Bits */ +#define S3C2410_ADCDAT0_UPDOWN (1<<15) +#define S3C2410_ADCDAT0_AUTO_PST (1<<14) +#define S3C2410_ADCDAT0_XY_PST (0x3<<12) +#define S3C2410_ADCDAT0_XPDATA_MASK (0x03FF) + +/* ADCDAT1 Bits */ +#define S3C2410_ADCDAT1_UPDOWN (1<<15) +#define S3C2410_ADCDAT1_AUTO_PST (1<<14) +#define S3C2410_ADCDAT1_XY_PST (0x3<<12) +#define S3C2410_ADCDAT1_YPDATA_MASK (0x03FF) + +#endif /* __ASM_ARCH_REGS_ADC_H */ + + diff --git a/arch/arm/plat-samsung/include/plat/regs-irqtype.h b/arch/arm/plat-samsung/include/plat/regs-irqtype.h new file mode 100644 index 000000000..ec5c4c5fd --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/regs-irqtype.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C - IRQ detection types. + */ + +/* values for S3C2410_EXTINT0/1/2 and other cpus in the series, including + * the S3C64XX +*/ +#define S3C2410_EXTINT_LOWLEV (0x00) +#define S3C2410_EXTINT_HILEV (0x01) +#define S3C2410_EXTINT_FALLEDGE (0x02) +#define S3C2410_EXTINT_RISEEDGE (0x04) +#define S3C2410_EXTINT_BOTHEDGE (0x06) diff --git a/arch/arm/plat-samsung/include/plat/regs-spi.h b/arch/arm/plat-samsung/include/plat/regs-spi.h new file mode 100644 index 000000000..607844311 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/regs-spi.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2004 Fetron GmbH + * + * S3C2410 SPI register definition + */ + +#ifndef __ASM_ARCH_REGS_SPI_H +#define __ASM_ARCH_REGS_SPI_H + +#define S3C2410_SPI1 (0x20) +#define S3C2412_SPI1 (0x100) + +#define S3C2410_SPCON (0x00) + +#define S3C2410_SPCON_SMOD_DMA (2 << 5) /* DMA mode */ +#define S3C2410_SPCON_SMOD_INT (1 << 5) /* interrupt mode */ +#define S3C2410_SPCON_SMOD_POLL (0 << 5) /* polling mode */ +#define S3C2410_SPCON_ENSCK (1 << 4) /* Enable SCK */ +#define S3C2410_SPCON_MSTR (1 << 3) /* Master:1, Slave:0 select */ +#define S3C2410_SPCON_CPOL_HIGH (1 << 2) /* Clock polarity select */ +#define S3C2410_SPCON_CPOL_LOW (0 << 2) /* Clock polarity select */ + +#define S3C2410_SPCON_CPHA_FMTB (1 << 1) /* Clock Phase Select */ +#define S3C2410_SPCON_CPHA_FMTA (0 << 1) /* Clock Phase Select */ + +#define S3C2410_SPSTA (0x04) + +#define S3C2410_SPSTA_DCOL (1 << 2) /* Data Collision Error */ +#define S3C2410_SPSTA_MULD (1 << 1) /* Multi Master Error */ +#define S3C2410_SPSTA_READY (1 << 0) /* Data Tx/Rx ready */ +#define S3C2412_SPSTA_READY_ORG (1 << 3) + +#define S3C2410_SPPIN (0x08) + +#define S3C2410_SPPIN_ENMUL (1 << 2) /* Multi Master Error detect */ +#define S3C2410_SPPIN_RESERVED (1 << 1) +#define S3C2410_SPPIN_KEEP (1 << 0) /* Master Out keep */ + +#define S3C2410_SPPRE (0x0C) +#define S3C2410_SPTDAT (0x10) +#define S3C2410_SPRDAT (0x14) + +#endif /* __ASM_ARCH_REGS_SPI_H */ diff --git a/arch/arm/plat-samsung/include/plat/regs-udc.h b/arch/arm/plat-samsung/include/plat/regs-udc.h new file mode 100644 index 000000000..d8d2eeaca --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/regs-udc.h @@ -0,0 +1,146 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2004 Herbert Poetzl <herbert@13thfloor.at> + */ + +#ifndef __ASM_ARCH_REGS_UDC_H +#define __ASM_ARCH_REGS_UDC_H + +#define S3C2410_USBDREG(x) (x) + +#define S3C2410_UDC_FUNC_ADDR_REG S3C2410_USBDREG(0x0140) +#define S3C2410_UDC_PWR_REG S3C2410_USBDREG(0x0144) +#define S3C2410_UDC_EP_INT_REG S3C2410_USBDREG(0x0148) + +#define S3C2410_UDC_USB_INT_REG S3C2410_USBDREG(0x0158) +#define S3C2410_UDC_EP_INT_EN_REG S3C2410_USBDREG(0x015c) + +#define S3C2410_UDC_USB_INT_EN_REG S3C2410_USBDREG(0x016c) + +#define S3C2410_UDC_FRAME_NUM1_REG S3C2410_USBDREG(0x0170) +#define S3C2410_UDC_FRAME_NUM2_REG S3C2410_USBDREG(0x0174) + +#define S3C2410_UDC_EP0_FIFO_REG S3C2410_USBDREG(0x01c0) +#define S3C2410_UDC_EP1_FIFO_REG S3C2410_USBDREG(0x01c4) +#define S3C2410_UDC_EP2_FIFO_REG S3C2410_USBDREG(0x01c8) +#define S3C2410_UDC_EP3_FIFO_REG S3C2410_USBDREG(0x01cc) +#define S3C2410_UDC_EP4_FIFO_REG S3C2410_USBDREG(0x01d0) + +#define S3C2410_UDC_EP1_DMA_CON S3C2410_USBDREG(0x0200) +#define S3C2410_UDC_EP1_DMA_UNIT S3C2410_USBDREG(0x0204) +#define S3C2410_UDC_EP1_DMA_FIFO S3C2410_USBDREG(0x0208) +#define S3C2410_UDC_EP1_DMA_TTC_L S3C2410_USBDREG(0x020c) +#define S3C2410_UDC_EP1_DMA_TTC_M S3C2410_USBDREG(0x0210) +#define S3C2410_UDC_EP1_DMA_TTC_H S3C2410_USBDREG(0x0214) + +#define S3C2410_UDC_EP2_DMA_CON S3C2410_USBDREG(0x0218) +#define S3C2410_UDC_EP2_DMA_UNIT S3C2410_USBDREG(0x021c) +#define S3C2410_UDC_EP2_DMA_FIFO S3C2410_USBDREG(0x0220) +#define S3C2410_UDC_EP2_DMA_TTC_L S3C2410_USBDREG(0x0224) +#define S3C2410_UDC_EP2_DMA_TTC_M S3C2410_USBDREG(0x0228) +#define S3C2410_UDC_EP2_DMA_TTC_H S3C2410_USBDREG(0x022c) + +#define S3C2410_UDC_EP3_DMA_CON S3C2410_USBDREG(0x0240) +#define S3C2410_UDC_EP3_DMA_UNIT S3C2410_USBDREG(0x0244) +#define S3C2410_UDC_EP3_DMA_FIFO S3C2410_USBDREG(0x0248) +#define S3C2410_UDC_EP3_DMA_TTC_L S3C2410_USBDREG(0x024c) +#define S3C2410_UDC_EP3_DMA_TTC_M S3C2410_USBDREG(0x0250) +#define S3C2410_UDC_EP3_DMA_TTC_H S3C2410_USBDREG(0x0254) + +#define S3C2410_UDC_EP4_DMA_CON S3C2410_USBDREG(0x0258) +#define S3C2410_UDC_EP4_DMA_UNIT S3C2410_USBDREG(0x025c) +#define S3C2410_UDC_EP4_DMA_FIFO S3C2410_USBDREG(0x0260) +#define S3C2410_UDC_EP4_DMA_TTC_L S3C2410_USBDREG(0x0264) +#define S3C2410_UDC_EP4_DMA_TTC_M S3C2410_USBDREG(0x0268) +#define S3C2410_UDC_EP4_DMA_TTC_H S3C2410_USBDREG(0x026c) + +#define S3C2410_UDC_INDEX_REG S3C2410_USBDREG(0x0178) + +/* indexed registers */ + +#define S3C2410_UDC_MAXP_REG S3C2410_USBDREG(0x0180) + +#define S3C2410_UDC_EP0_CSR_REG S3C2410_USBDREG(0x0184) + +#define S3C2410_UDC_IN_CSR1_REG S3C2410_USBDREG(0x0184) +#define S3C2410_UDC_IN_CSR2_REG S3C2410_USBDREG(0x0188) + +#define S3C2410_UDC_OUT_CSR1_REG S3C2410_USBDREG(0x0190) +#define S3C2410_UDC_OUT_CSR2_REG S3C2410_USBDREG(0x0194) +#define S3C2410_UDC_OUT_FIFO_CNT1_REG S3C2410_USBDREG(0x0198) +#define S3C2410_UDC_OUT_FIFO_CNT2_REG S3C2410_USBDREG(0x019c) + +#define S3C2410_UDC_FUNCADDR_UPDATE (1 << 7) + +#define S3C2410_UDC_PWR_ISOUP (1 << 7) /* R/W */ +#define S3C2410_UDC_PWR_RESET (1 << 3) /* R */ +#define S3C2410_UDC_PWR_RESUME (1 << 2) /* R/W */ +#define S3C2410_UDC_PWR_SUSPEND (1 << 1) /* R */ +#define S3C2410_UDC_PWR_ENSUSPEND (1 << 0) /* R/W */ + +#define S3C2410_UDC_PWR_DEFAULT (0x00) + +#define S3C2410_UDC_INT_EP4 (1 << 4) /* R/W (clear only) */ +#define S3C2410_UDC_INT_EP3 (1 << 3) /* R/W (clear only) */ +#define S3C2410_UDC_INT_EP2 (1 << 2) /* R/W (clear only) */ +#define S3C2410_UDC_INT_EP1 (1 << 1) /* R/W (clear only) */ +#define S3C2410_UDC_INT_EP0 (1 << 0) /* R/W (clear only) */ + +#define S3C2410_UDC_USBINT_RESET (1 << 2) /* R/W (clear only) */ +#define S3C2410_UDC_USBINT_RESUME (1 << 1) /* R/W (clear only) */ +#define S3C2410_UDC_USBINT_SUSPEND (1 << 0) /* R/W (clear only) */ + +#define S3C2410_UDC_INTE_EP4 (1 << 4) /* R/W */ +#define S3C2410_UDC_INTE_EP3 (1 << 3) /* R/W */ +#define S3C2410_UDC_INTE_EP2 (1 << 2) /* R/W */ +#define S3C2410_UDC_INTE_EP1 (1 << 1) /* R/W */ +#define S3C2410_UDC_INTE_EP0 (1 << 0) /* R/W */ + +#define S3C2410_UDC_USBINTE_RESET (1 << 2) /* R/W */ +#define S3C2410_UDC_USBINTE_SUSPEND (1 << 0) /* R/W */ + +#define S3C2410_UDC_INDEX_EP0 (0x00) +#define S3C2410_UDC_INDEX_EP1 (0x01) +#define S3C2410_UDC_INDEX_EP2 (0x02) +#define S3C2410_UDC_INDEX_EP3 (0x03) +#define S3C2410_UDC_INDEX_EP4 (0x04) + +#define S3C2410_UDC_ICSR1_CLRDT (1 << 6) /* R/W */ +#define S3C2410_UDC_ICSR1_SENTSTL (1 << 5) /* R/W (clear only) */ +#define S3C2410_UDC_ICSR1_SENDSTL (1 << 4) /* R/W */ +#define S3C2410_UDC_ICSR1_FFLUSH (1 << 3) /* W (set only) */ +#define S3C2410_UDC_ICSR1_UNDRUN (1 << 2) /* R/W (clear only) */ +#define S3C2410_UDC_ICSR1_PKTRDY (1 << 0) /* R/W (set only) */ + +#define S3C2410_UDC_ICSR2_AUTOSET (1 << 7) /* R/W */ +#define S3C2410_UDC_ICSR2_ISO (1 << 6) /* R/W */ +#define S3C2410_UDC_ICSR2_MODEIN (1 << 5) /* R/W */ +#define S3C2410_UDC_ICSR2_DMAIEN (1 << 4) /* R/W */ + +#define S3C2410_UDC_OCSR1_CLRDT (1 << 7) /* R/W */ +#define S3C2410_UDC_OCSR1_SENTSTL (1 << 6) /* R/W (clear only) */ +#define S3C2410_UDC_OCSR1_SENDSTL (1 << 5) /* R/W */ +#define S3C2410_UDC_OCSR1_FFLUSH (1 << 4) /* R/W */ +#define S3C2410_UDC_OCSR1_DERROR (1 << 3) /* R */ +#define S3C2410_UDC_OCSR1_OVRRUN (1 << 2) /* R/W (clear only) */ +#define S3C2410_UDC_OCSR1_PKTRDY (1 << 0) /* R/W (clear only) */ + +#define S3C2410_UDC_OCSR2_AUTOCLR (1 << 7) /* R/W */ +#define S3C2410_UDC_OCSR2_ISO (1 << 6) /* R/W */ +#define S3C2410_UDC_OCSR2_DMAIEN (1 << 5) /* R/W */ + +#define S3C2410_UDC_EP0_CSR_OPKRDY (1 << 0) +#define S3C2410_UDC_EP0_CSR_IPKRDY (1 << 1) +#define S3C2410_UDC_EP0_CSR_SENTSTL (1 << 2) +#define S3C2410_UDC_EP0_CSR_DE (1 << 3) +#define S3C2410_UDC_EP0_CSR_SE (1 << 4) +#define S3C2410_UDC_EP0_CSR_SENDSTL (1 << 5) +#define S3C2410_UDC_EP0_CSR_SOPKTRDY (1 << 6) +#define S3C2410_UDC_EP0_CSR_SSE (1 << 7) + +#define S3C2410_UDC_MAXP_8 (1 << 0) +#define S3C2410_UDC_MAXP_16 (1 << 1) +#define S3C2410_UDC_MAXP_32 (1 << 2) +#define S3C2410_UDC_MAXP_64 (1 << 3) + +#endif diff --git a/arch/arm/plat-samsung/include/plat/samsung-time.h b/arch/arm/plat-samsung/include/plat/samsung-time.h new file mode 100644 index 000000000..d16eefe9a --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/samsung-time.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Header file for samsung s3c and s5p time support + */ + +#ifndef __ASM_PLAT_SAMSUNG_TIME_H +#define __ASM_PLAT_SAMSUNG_TIME_H __FILE__ + +/* SAMSUNG HR-Timer Clock mode */ +enum samsung_timer_mode { + SAMSUNG_PWM0, + SAMSUNG_PWM1, + SAMSUNG_PWM2, + SAMSUNG_PWM3, + SAMSUNG_PWM4, +}; + +extern void __init samsung_set_timer_source(enum samsung_timer_mode event, + enum samsung_timer_mode source); + +extern void __init samsung_timer_init(void); + +#endif /* __ASM_PLAT_SAMSUNG_TIME_H */ diff --git a/arch/arm/plat-samsung/include/plat/sdhci.h b/arch/arm/plat-samsung/include/plat/sdhci.h new file mode 100644 index 000000000..5731e42ea --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/sdhci.h @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C Platform - SDHCI (HSMMC) platform data definitions + */ + +#ifndef __PLAT_S3C_SDHCI_H +#define __PLAT_S3C_SDHCI_H __FILE__ + +#include <linux/platform_data/mmc-sdhci-s3c.h> +#include <plat/devs.h> + +/* s3c_sdhci_set_platdata() - common helper for setting SDHCI platform data + * @pd: The default platform data for this device. + * @set: Pointer to the platform data to fill in. + */ +extern void s3c_sdhci_set_platdata(struct s3c_sdhci_platdata *pd, + struct s3c_sdhci_platdata *set); + +/** + * s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device. + * @pd: Platform data to register to device. + * + * Register the given platform data for use withe S3C SDHCI device. + * The call will copy the platform data, so the board definitions can + * make the structure itself __initdata. + */ +extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd); +extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd); +extern void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd); +extern void s3c_sdhci3_set_platdata(struct s3c_sdhci_platdata *pd); + +/* Default platform data, exported so that per-cpu initialisation can + * set the correct one when there are more than one cpu type selected. +*/ + +extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata; +extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata; +extern struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata; +extern struct s3c_sdhci_platdata s3c_hsmmc3_def_platdata; + +/* Helper function availability */ + +extern void s3c2416_setup_sdhci0_cfg_gpio(struct platform_device *, int w); +extern void s3c2416_setup_sdhci1_cfg_gpio(struct platform_device *, int w); +extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w); +extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w); +extern void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *, int w); + +/* S3C2416 SDHCI setup */ + +#ifdef CONFIG_S3C2416_SETUP_SDHCI +static inline void s3c2416_default_sdhci0(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC + s3c_hsmmc0_def_platdata.cfg_gpio = s3c2416_setup_sdhci0_cfg_gpio; +#endif /* CONFIG_S3C_DEV_HSMMC */ +} + +static inline void s3c2416_default_sdhci1(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC1 + s3c_hsmmc1_def_platdata.cfg_gpio = s3c2416_setup_sdhci1_cfg_gpio; +#endif /* CONFIG_S3C_DEV_HSMMC1 */ +} + +#else +static inline void s3c2416_default_sdhci0(void) { } +static inline void s3c2416_default_sdhci1(void) { } + +#endif /* CONFIG_S3C2416_SETUP_SDHCI */ + +/* S3C64XX SDHCI setup */ + +#ifdef CONFIG_S3C64XX_SETUP_SDHCI +static inline void s3c6400_default_sdhci0(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC + s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio; +#endif +} + +static inline void s3c6400_default_sdhci1(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC1 + s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio; +#endif +} + +static inline void s3c6400_default_sdhci2(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC2 + s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio; +#endif +} + +static inline void s3c6410_default_sdhci0(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC + s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio; +#endif +} + +static inline void s3c6410_default_sdhci1(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC1 + s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio; +#endif +} + +static inline void s3c6410_default_sdhci2(void) +{ +#ifdef CONFIG_S3C_DEV_HSMMC2 + s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio; +#endif +} + +#else +static inline void s3c6410_default_sdhci0(void) { } +static inline void s3c6410_default_sdhci1(void) { } +static inline void s3c6410_default_sdhci2(void) { } +static inline void s3c6400_default_sdhci0(void) { } +static inline void s3c6400_default_sdhci1(void) { } +static inline void s3c6400_default_sdhci2(void) { } + +#endif /* CONFIG_S3C64XX_SETUP_SDHCI */ + +static inline void s3c_sdhci_setname(int id, char *name) +{ + switch (id) { +#ifdef CONFIG_S3C_DEV_HSMMC + case 0: + s3c_device_hsmmc0.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC1 + case 1: + s3c_device_hsmmc1.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC2 + case 2: + s3c_device_hsmmc2.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC3 + case 3: + s3c_device_hsmmc3.name = name; + break; +#endif + default: + break; + } +} +#endif /* __PLAT_S3C_SDHCI_H */ diff --git a/arch/arm/plat-samsung/include/plat/usb-phy.h b/arch/arm/plat-samsung/include/plat/usb-phy.h new file mode 100644 index 000000000..6d0c788be --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/usb-phy.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2011 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim <jy0922.shim@samsung.com> + */ + +#ifndef __PLAT_SAMSUNG_USB_PHY_H +#define __PLAT_SAMSUNG_USB_PHY_H __FILE__ + +#include <linux/usb/samsung_usb_phy.h> + +extern int s5p_usb_phy_init(struct platform_device *pdev, int type); +extern int s5p_usb_phy_exit(struct platform_device *pdev, int type); + +#endif /* __PLAT_SAMSUNG_USB_PHY_H */ diff --git a/arch/arm/plat-samsung/include/plat/wakeup-mask.h b/arch/arm/plat-samsung/include/plat/wakeup-mask.h new file mode 100644 index 000000000..630909e66 --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/wakeup-mask.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2010 Ben Dooks <ben-linux@fluff.org> + * + * Support for wakeup mask interrupts on newer SoCs + */ + +#ifndef __PLAT_WAKEUP_MASK_H +#define __PLAT_WAKEUP_MASK_H __file__ + +/* if no irq yet defined, but still want to mask */ +#define NO_WAKEUP_IRQ (0x90000000) + +/** + * struct samsung_wakeup_mask - wakeup mask information + * @irq: The interrupt associated with this wakeup. + * @bit: The bit, as a (1 << bitno) controlling this source. + */ +struct samsung_wakeup_mask { + unsigned int irq; + u32 bit; +}; + +/** + * samsung_sync_wakemask - sync wakeup mask information for pm + * @reg: The register that is used. + * @masks: The list of masks to use. + * @nr_masks: The number of entries pointed to buy @masks. + * + * Synchronise the wakeup mask information at suspend time from the list + * of interrupts and control bits in @masks. We do this at suspend time + * as overriding the relevant irq chips is harder and the register is only + * required to be correct before we enter sleep. + */ +extern void samsung_sync_wakemask(void __iomem *reg, + const struct samsung_wakeup_mask *masks, + int nr_masks); + +#endif /* __PLAT_WAKEUP_MASK_H */ diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c new file mode 100644 index 000000000..e9acf02ef --- /dev/null +++ b/arch/arm/plat-samsung/init.c @@ -0,0 +1,173 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// S3C series CPU initialisation + +/* + * NOTE: Code in this file is not used on S3C64xx when booting with + * Device Tree support. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/platform_device.h> +#include <linux/of.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <plat/cpu.h> +#include <plat/devs.h> + +static struct cpu_table *cpu; + +static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode, + struct cpu_table *tab, + unsigned int count) +{ + for (; count != 0; count--, tab++) { + if ((idcode & tab->idmask) == (tab->idcode & tab->idmask)) + return tab; + } + + return NULL; +} + +void __init s3c_init_cpu(unsigned long idcode, + struct cpu_table *cputab, unsigned int cputab_size) +{ + cpu = s3c_lookup_cpu(idcode, cputab, cputab_size); + + if (cpu == NULL) { + printk(KERN_ERR "Unknown CPU type 0x%08lx\n", idcode); + panic("Unknown S3C24XX CPU"); + } + + printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode); + + if (cpu->init == NULL) { + printk(KERN_ERR "CPU %s support not enabled\n", cpu->name); + panic("Unsupported Samsung CPU"); + } + + if (cpu->map_io) + cpu->map_io(); +} + +/* s3c24xx_init_clocks + * + * Initialise the clock subsystem and associated information from the + * given master crystal value. + * + * xtal = 0 -> use default PLL crystal value (normally 12MHz) + * != 0 -> PLL crystal value in Hz +*/ + +void __init s3c24xx_init_clocks(int xtal) +{ + if (xtal == 0) + xtal = 12*1000*1000; + + if (cpu == NULL) + panic("s3c24xx_init_clocks: no cpu setup?\n"); + + if (cpu->init_clocks == NULL) + panic("s3c24xx_init_clocks: cpu has no clock init\n"); + else + (cpu->init_clocks)(xtal); +} + +/* uart management */ +#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS) +static int nr_uarts __initdata = 0; + +#ifdef CONFIG_SERIAL_SAMSUNG_UARTS +static struct s3c2410_uartcfg uart_cfgs[CONFIG_SERIAL_SAMSUNG_UARTS]; +#endif + +/* s3c24xx_init_uartdevs + * + * copy the specified platform data and configuration into our central + * set of devices, before the data is thrown away after the init process. + * + * This also fills in the array passed to the serial driver for the + * early initialisation of the console. +*/ + +void __init s3c24xx_init_uartdevs(char *name, + struct s3c24xx_uart_resources *res, + struct s3c2410_uartcfg *cfg, int no) +{ +#ifdef CONFIG_SERIAL_SAMSUNG_UARTS + struct platform_device *platdev; + struct s3c2410_uartcfg *cfgptr = uart_cfgs; + struct s3c24xx_uart_resources *resp; + int uart; + + memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no); + + for (uart = 0; uart < no; uart++, cfg++, cfgptr++) { + platdev = s3c24xx_uart_src[cfgptr->hwport]; + + resp = res + cfgptr->hwport; + + s3c24xx_uart_devs[uart] = platdev; + + platdev->name = name; + platdev->resource = resp->resources; + platdev->num_resources = resp->nr_resources; + + platdev->dev.platform_data = cfgptr; + } + + nr_uarts = no; +#endif +} + +void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no) +{ + if (cpu == NULL) + return; + + if (cpu->init_uarts == NULL && IS_ENABLED(CONFIG_SAMSUNG_ATAGS)) { + printk(KERN_ERR "s3c24xx_init_uarts: cpu has no uart init\n"); + } else + (cpu->init_uarts)(cfg, no); +} +#endif + +static int __init s3c_arch_init(void) +{ + int ret; + + /* init is only needed for ATAGS based platforms */ + if (!IS_ENABLED(CONFIG_ATAGS) || + (!soc_is_s3c24xx() && !soc_is_s3c64xx())) + return 0; + + // do the correct init for cpu + + if (cpu == NULL) { + /* Not needed when booting with device tree. */ + if (of_have_populated_dt()) + return 0; + panic("s3c_arch_init: NULL cpu\n"); + } + + ret = (cpu->init)(); + if (ret != 0) + return ret; +#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS) + ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts); +#endif + return ret; +} + +arch_initcall(s3c_arch_init); diff --git a/arch/arm/plat-samsung/platformdata.c b/arch/arm/plat-samsung/platformdata.c new file mode 100644 index 000000000..cbc3b4b45 --- /dev/null +++ b/arch/arm/plat-samsung/platformdata.c @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright 2010 Ben Dooks <ben-linux <at> fluff.org> +// +// Helper for platform data setting + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/platform_device.h> + +#include <plat/devs.h> +#include <plat/sdhci.h> + +void __init *s3c_set_platdata(void *pd, size_t pdsize, + struct platform_device *pdev) +{ + void *npd; + + if (!pd) { + /* too early to use dev_name(), may not be registered */ + printk(KERN_ERR "%s: no platform data supplied\n", pdev->name); + return NULL; + } + + npd = kmemdup(pd, pdsize, GFP_KERNEL); + if (!npd) + return NULL; + + pdev->dev.platform_data = npd; + return npd; +} + +void s3c_sdhci_set_platdata(struct s3c_sdhci_platdata *pd, + struct s3c_sdhci_platdata *set) +{ + set->cd_type = pd->cd_type; + set->ext_cd_init = pd->ext_cd_init; + set->ext_cd_cleanup = pd->ext_cd_cleanup; + set->ext_cd_gpio = pd->ext_cd_gpio; + set->ext_cd_gpio_invert = pd->ext_cd_gpio_invert; + + if (pd->max_width) + set->max_width = pd->max_width; + if (pd->cfg_gpio) + set->cfg_gpio = pd->cfg_gpio; + if (pd->host_caps) + set->host_caps |= pd->host_caps; + if (pd->host_caps2) + set->host_caps2 |= pd->host_caps2; + if (pd->pm_caps) + set->pm_caps |= pd->pm_caps; +} diff --git a/arch/arm/plat-samsung/pm-check.c b/arch/arm/plat-samsung/pm-check.c new file mode 100644 index 000000000..cd2c02c68 --- /dev/null +++ b/arch/arm/plat-samsung/pm-check.c @@ -0,0 +1,233 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// originally in linux/arch/arm/plat-s3c24xx/pm.c +// +// Copyright (c) 2004-2008 Simtec Electronics +// http://armlinux.simtec.co.uk +// Ben Dooks <ben@simtec.co.uk> +// +// S3C Power Mangament - suspend/resume memory corruption check. + +#include <linux/kernel.h> +#include <linux/suspend.h> +#include <linux/init.h> +#include <linux/crc32.h> +#include <linux/ioport.h> +#include <linux/slab.h> + +#include <plat/pm-common.h> + +#if CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE < 1 +#error CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE must be a positive non-zero value +#endif + +/* suspend checking code... + * + * this next area does a set of crc checks over all the installed + * memory, so the system can verify if the resume was ok. + * + * CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE defines the block-size for the CRC, + * increasing it will mean that the area corrupted will be less easy to spot, + * and reducing the size will cause the CRC save area to grow +*/ + +#define CHECK_CHUNKSIZE (CONFIG_SAMSUNG_PM_CHECK_CHUNKSIZE * 1024) + +static u32 crc_size; /* size needed for the crc block */ +static u32 *crcs; /* allocated over suspend/resume */ + +typedef u32 *(run_fn_t)(struct resource *ptr, u32 *arg); + +/* s3c_pm_run_res + * + * go through the given resource list, and look for system ram +*/ + +static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg) +{ + while (ptr != NULL) { + if (ptr->child != NULL) + s3c_pm_run_res(ptr->child, fn, arg); + + if ((ptr->flags & IORESOURCE_SYSTEM_RAM) + == IORESOURCE_SYSTEM_RAM) { + S3C_PMDBG("Found system RAM at %08lx..%08lx\n", + (unsigned long)ptr->start, + (unsigned long)ptr->end); + arg = (fn)(ptr, arg); + } + + ptr = ptr->sibling; + } +} + +static void s3c_pm_run_sysram(run_fn_t fn, u32 *arg) +{ + s3c_pm_run_res(&iomem_resource, fn, arg); +} + +static u32 *s3c_pm_countram(struct resource *res, u32 *val) +{ + u32 size = (u32)resource_size(res); + + size += CHECK_CHUNKSIZE-1; + size /= CHECK_CHUNKSIZE; + + S3C_PMDBG("Area %08lx..%08lx, %d blocks\n", + (unsigned long)res->start, (unsigned long)res->end, size); + + *val += size * sizeof(u32); + return val; +} + +/* s3c_pm_prepare_check + * + * prepare the necessary information for creating the CRCs. This + * must be done before the final save, as it will require memory + * allocating, and thus touching bits of the kernel we do not + * know about. +*/ + +void s3c_pm_check_prepare(void) +{ + crc_size = 0; + + s3c_pm_run_sysram(s3c_pm_countram, &crc_size); + + S3C_PMDBG("s3c_pm_prepare_check: %u checks needed\n", crc_size); + + crcs = kmalloc(crc_size+4, GFP_KERNEL); + if (crcs == NULL) + printk(KERN_ERR "Cannot allocated CRC save area\n"); +} + +static u32 *s3c_pm_makecheck(struct resource *res, u32 *val) +{ + unsigned long addr, left; + + for (addr = res->start; addr < res->end; + addr += CHECK_CHUNKSIZE) { + left = res->end - addr; + + if (left > CHECK_CHUNKSIZE) + left = CHECK_CHUNKSIZE; + + *val = crc32_le(~0, phys_to_virt(addr), left); + val++; + } + + return val; +} + +/* s3c_pm_check_store + * + * compute the CRC values for the memory blocks before the final + * sleep. +*/ + +void s3c_pm_check_store(void) +{ + if (crcs != NULL) + s3c_pm_run_sysram(s3c_pm_makecheck, crcs); +} + +/* in_region + * + * return TRUE if the area defined by ptr..ptr+size contains the + * what..what+whatsz +*/ + +static inline int in_region(void *ptr, int size, void *what, size_t whatsz) +{ + if ((what+whatsz) < ptr) + return 0; + + if (what > (ptr+size)) + return 0; + + return 1; +} + +/** + * s3c_pm_runcheck() - helper to check a resource on restore. + * @res: The resource to check + * @vak: Pointer to list of CRC32 values to check. + * + * Called from the s3c_pm_check_restore() via s3c_pm_run_sysram(), this + * function runs the given memory resource checking it against the stored + * CRC to ensure that memory is restored. The function tries to skip as + * many of the areas used during the suspend process. + */ +static u32 *s3c_pm_runcheck(struct resource *res, u32 *val) +{ + unsigned long addr; + unsigned long left; + void *stkpage; + void *ptr; + u32 calc; + + stkpage = (void *)((u32)&calc & ~PAGE_MASK); + + for (addr = res->start; addr < res->end; + addr += CHECK_CHUNKSIZE) { + left = res->end - addr; + + if (left > CHECK_CHUNKSIZE) + left = CHECK_CHUNKSIZE; + + ptr = phys_to_virt(addr); + + if (in_region(ptr, left, stkpage, 4096)) { + S3C_PMDBG("skipping %08lx, has stack in\n", addr); + goto skip_check; + } + + if (in_region(ptr, left, crcs, crc_size)) { + S3C_PMDBG("skipping %08lx, has crc block in\n", addr); + goto skip_check; + } + + /* calculate and check the checksum */ + + calc = crc32_le(~0, ptr, left); + if (calc != *val) { + printk(KERN_ERR "Restore CRC error at " + "%08lx (%08x vs %08x)\n", addr, calc, *val); + + S3C_PMDBG("Restore CRC error at %08lx (%08x vs %08x)\n", + addr, calc, *val); + } + + skip_check: + val++; + } + + return val; +} + +/** + * s3c_pm_check_restore() - memory check called on resume + * + * check the CRCs after the restore event and free the memory used + * to hold them +*/ +void s3c_pm_check_restore(void) +{ + if (crcs != NULL) + s3c_pm_run_sysram(s3c_pm_runcheck, crcs); +} + +/** + * s3c_pm_check_cleanup() - free memory resources + * + * Free the resources that where allocated by the suspend + * memory check code. We do this separately from the + * s3c_pm_check_restore() function as we cannot call any + * functions that might sleep during that resume. + */ +void s3c_pm_check_cleanup(void) +{ + kfree(crcs); + crcs = NULL; +} + diff --git a/arch/arm/plat-samsung/pm-common.c b/arch/arm/plat-samsung/pm-common.c new file mode 100644 index 000000000..59a10c6dc --- /dev/null +++ b/arch/arm/plat-samsung/pm-common.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2013 Samsung Electronics Co., Ltd. +// Tomasz Figa <t.figa@samsung.com> +// Copyright (C) 2008 Openmoko, Inc. +// Copyright (C) 2004-2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// Samsung common power management helper functions. + +#include <linux/io.h> +#include <linux/kernel.h> + +#include <plat/pm-common.h> + +/* helper functions to save and restore register state */ + +/** + * s3c_pm_do_save() - save a set of registers for restoration on resume. + * @ptr: Pointer to an array of registers. + * @count: Size of the ptr array. + * + * Run through the list of registers given, saving their contents in the + * array for later restoration when we wakeup. + */ +void s3c_pm_do_save(struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) { + ptr->val = readl_relaxed(ptr->reg); + S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val); + } +} + +/** + * s3c_pm_do_restore() - restore register values from the save list. + * @ptr: Pointer to an array of registers. + * @count: Size of the ptr array. + * + * Restore the register values saved from s3c_pm_do_save(). + * + * Note, we do not use S3C_PMDBG() in here, as the system may not have + * restore the UARTs state yet +*/ + +void s3c_pm_do_restore(const struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) { + pr_debug("restore %p (restore %08lx, was %08x)\n", + ptr->reg, ptr->val, readl_relaxed(ptr->reg)); + + writel_relaxed(ptr->val, ptr->reg); + } +} + +/** + * s3c_pm_do_restore_core() - early restore register values from save list. + * + * This is similar to s3c_pm_do_restore() except we try and minimise the + * side effects of the function in case registers that hardware might need + * to work has been restored. + * + * WARNING: Do not put any debug in here that may effect memory or use + * peripherals, as things may be changing! +*/ + +void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) + writel_relaxed(ptr->val, ptr->reg); +} diff --git a/arch/arm/plat-samsung/pm-debug.c b/arch/arm/plat-samsung/pm-debug.c new file mode 100644 index 000000000..b76b1e9ba --- /dev/null +++ b/arch/arm/plat-samsung/pm-debug.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2013 Samsung Electronics Co., Ltd. +// Tomasz Figa <t.figa@samsung.com> +// Copyright (C) 2008 Openmoko, Inc. +// Copyright (C) 2004-2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// Samsung common power management (suspend to RAM) debug support + +#include <linux/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/io.h> + +#include <asm/mach/map.h> + +#include <plat/cpu.h> +#include <plat/pm-common.h> + +#ifdef CONFIG_SAMSUNG_ATAGS +#include <plat/pm.h> +#include <mach/pm-core.h> +#else +static inline void s3c_pm_debug_init_uart(void) {} +static inline void s3c_pm_arch_update_uart(void __iomem *regs, + struct pm_uart_save *save) {} +#endif + +static struct pm_uart_save uart_save; + +extern void printascii(const char *); + +void s3c_pm_dbg(const char *fmt, ...) +{ + va_list va; + char buff[256]; + + va_start(va, fmt); + vsnprintf(buff, sizeof(buff), fmt, va); + va_end(va); + + printascii(buff); +} + +void s3c_pm_debug_init(void) +{ + /* restart uart clocks so we can use them to output */ + s3c_pm_debug_init_uart(); +} + +static inline void __iomem *s3c_pm_uart_base(void) +{ + unsigned long paddr; + unsigned long vaddr; + + debug_ll_addr(&paddr, &vaddr); + + return (void __iomem *)vaddr; +} + +void s3c_pm_save_uarts(void) +{ + void __iomem *regs = s3c_pm_uart_base(); + struct pm_uart_save *save = &uart_save; + + save->ulcon = __raw_readl(regs + S3C2410_ULCON); + save->ucon = __raw_readl(regs + S3C2410_UCON); + save->ufcon = __raw_readl(regs + S3C2410_UFCON); + save->umcon = __raw_readl(regs + S3C2410_UMCON); + save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV); + + if (!soc_is_s3c2410()) + save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT); + + S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n", + regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv); +} + +void s3c_pm_restore_uarts(void) +{ + void __iomem *regs = s3c_pm_uart_base(); + struct pm_uart_save *save = &uart_save; + + s3c_pm_arch_update_uart(regs, save); + + __raw_writel(save->ulcon, regs + S3C2410_ULCON); + __raw_writel(save->ucon, regs + S3C2410_UCON); + __raw_writel(save->ufcon, regs + S3C2410_UFCON); + __raw_writel(save->umcon, regs + S3C2410_UMCON); + __raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV); + + if (!soc_is_s3c2410()) + __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT); +} diff --git a/arch/arm/plat-samsung/pm-gpio.c b/arch/arm/plat-samsung/pm-gpio.c new file mode 100644 index 000000000..cb2e3bc79 --- /dev/null +++ b/arch/arm/plat-samsung/pm-gpio.c @@ -0,0 +1,380 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright 2008 Openmoko, Inc. +// Copyright 2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// S3C series GPIO PM code + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#include <mach/gpio-samsung.h> + +#include <plat/gpio-core.h> +#include <plat/pm.h> + +/* PM GPIO helpers */ + +#define OFFS_CON (0x00) +#define OFFS_DAT (0x04) +#define OFFS_UP (0x08) + +static void samsung_gpio_pm_1bit_save(struct samsung_gpio_chip *chip) +{ + chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON); + chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT); +} + +static void samsung_gpio_pm_1bit_resume(struct samsung_gpio_chip *chip) +{ + void __iomem *base = chip->base; + u32 old_gpcon = __raw_readl(base + OFFS_CON); + u32 old_gpdat = __raw_readl(base + OFFS_DAT); + u32 gps_gpcon = chip->pm_save[0]; + u32 gps_gpdat = chip->pm_save[1]; + u32 gpcon; + + /* GPACON only has one bit per control / data and no PULLUPs. + * GPACON[x] = 0 => Output, 1 => SFN */ + + /* first set all SFN bits to SFN */ + + gpcon = old_gpcon | gps_gpcon; + __raw_writel(gpcon, base + OFFS_CON); + + /* now set all the other bits */ + + __raw_writel(gps_gpdat, base + OFFS_DAT); + __raw_writel(gps_gpcon, base + OFFS_CON); + + S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n", + chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat); +} + +struct samsung_gpio_pm samsung_gpio_pm_1bit = { + .save = samsung_gpio_pm_1bit_save, + .resume = samsung_gpio_pm_1bit_resume, +}; + +static void samsung_gpio_pm_2bit_save(struct samsung_gpio_chip *chip) +{ + chip->pm_save[0] = __raw_readl(chip->base + OFFS_CON); + chip->pm_save[1] = __raw_readl(chip->base + OFFS_DAT); + chip->pm_save[2] = __raw_readl(chip->base + OFFS_UP); +} + +/* Test whether the given masked+shifted bits of an GPIO configuration + * are one of the SFN (special function) modes. */ + +static inline int is_sfn(unsigned long con) +{ + return con >= 2; +} + +/* Test if the given masked+shifted GPIO configuration is an input */ + +static inline int is_in(unsigned long con) +{ + return con == 0; +} + +/* Test if the given masked+shifted GPIO configuration is an output */ + +static inline int is_out(unsigned long con) +{ + return con == 1; +} + +/** + * samsung_gpio_pm_2bit_resume() - restore the given GPIO bank + * @chip: The chip information to resume. + * + * Restore one of the GPIO banks that was saved during suspend. This is + * not as simple as once thought, due to the possibility of glitches + * from the order that the CON and DAT registers are set in. + * + * The three states the pin can be are {IN,OUT,SFN} which gives us 9 + * combinations of changes to check. Three of these, if the pin stays + * in the same configuration can be discounted. This leaves us with + * the following: + * + * { IN => OUT } Change DAT first + * { IN => SFN } Change CON first + * { OUT => SFN } Change CON first, so new data will not glitch + * { OUT => IN } Change CON first, so new data will not glitch + * { SFN => IN } Change CON first + * { SFN => OUT } Change DAT first, so new data will not glitch [1] + * + * We do not currently deal with the UP registers as these control + * weak resistors, so a small delay in change should not need to bring + * these into the calculations. + * + * [1] this assumes that writing to a pin DAT whilst in SFN will set the + * state for when it is next output. + */ +static void samsung_gpio_pm_2bit_resume(struct samsung_gpio_chip *chip) +{ + void __iomem *base = chip->base; + u32 old_gpcon = __raw_readl(base + OFFS_CON); + u32 old_gpdat = __raw_readl(base + OFFS_DAT); + u32 gps_gpcon = chip->pm_save[0]; + u32 gps_gpdat = chip->pm_save[1]; + u32 gpcon, old, new, mask; + u32 change_mask = 0x0; + int nr; + + /* restore GPIO pull-up settings */ + __raw_writel(chip->pm_save[2], base + OFFS_UP); + + /* Create a change_mask of all the items that need to have + * their CON value changed before their DAT value, so that + * we minimise the work between the two settings. + */ + + for (nr = 0, mask = 0x03; nr < 32; nr += 2, mask <<= 2) { + old = (old_gpcon & mask) >> nr; + new = (gps_gpcon & mask) >> nr; + + /* If there is no change, then skip */ + + if (old == new) + continue; + + /* If both are special function, then skip */ + + if (is_sfn(old) && is_sfn(new)) + continue; + + /* Change is IN => OUT, do not change now */ + + if (is_in(old) && is_out(new)) + continue; + + /* Change is SFN => OUT, do not change now */ + + if (is_sfn(old) && is_out(new)) + continue; + + /* We should now be at the case of IN=>SFN, + * OUT=>SFN, OUT=>IN, SFN=>IN. */ + + change_mask |= mask; + } + + + /* Write the new CON settings */ + + gpcon = old_gpcon & ~change_mask; + gpcon |= gps_gpcon & change_mask; + + __raw_writel(gpcon, base + OFFS_CON); + + /* Now change any items that require DAT,CON */ + + __raw_writel(gps_gpdat, base + OFFS_DAT); + __raw_writel(gps_gpcon, base + OFFS_CON); + + S3C_PMDBG("%s: CON %08x => %08x, DAT %08x => %08x\n", + chip->chip.label, old_gpcon, gps_gpcon, old_gpdat, gps_gpdat); +} + +struct samsung_gpio_pm samsung_gpio_pm_2bit = { + .save = samsung_gpio_pm_2bit_save, + .resume = samsung_gpio_pm_2bit_resume, +}; + +#if defined(CONFIG_ARCH_S3C64XX) +static void samsung_gpio_pm_4bit_save(struct samsung_gpio_chip *chip) +{ + chip->pm_save[1] = __raw_readl(chip->base + OFFS_CON); + chip->pm_save[2] = __raw_readl(chip->base + OFFS_DAT); + chip->pm_save[3] = __raw_readl(chip->base + OFFS_UP); + + if (chip->chip.ngpio > 8) + chip->pm_save[0] = __raw_readl(chip->base - 4); +} + +static u32 samsung_gpio_pm_4bit_mask(u32 old_gpcon, u32 gps_gpcon) +{ + u32 old, new, mask; + u32 change_mask = 0x0; + int nr; + + for (nr = 0, mask = 0x0f; nr < 16; nr += 4, mask <<= 4) { + old = (old_gpcon & mask) >> nr; + new = (gps_gpcon & mask) >> nr; + + /* If there is no change, then skip */ + + if (old == new) + continue; + + /* If both are special function, then skip */ + + if (is_sfn(old) && is_sfn(new)) + continue; + + /* Change is IN => OUT, do not change now */ + + if (is_in(old) && is_out(new)) + continue; + + /* Change is SFN => OUT, do not change now */ + + if (is_sfn(old) && is_out(new)) + continue; + + /* We should now be at the case of IN=>SFN, + * OUT=>SFN, OUT=>IN, SFN=>IN. */ + + change_mask |= mask; + } + + return change_mask; +} + +static void samsung_gpio_pm_4bit_con(struct samsung_gpio_chip *chip, int index) +{ + void __iomem *con = chip->base + (index * 4); + u32 old_gpcon = __raw_readl(con); + u32 gps_gpcon = chip->pm_save[index + 1]; + u32 gpcon, mask; + + mask = samsung_gpio_pm_4bit_mask(old_gpcon, gps_gpcon); + + gpcon = old_gpcon & ~mask; + gpcon |= gps_gpcon & mask; + + __raw_writel(gpcon, con); +} + +static void samsung_gpio_pm_4bit_resume(struct samsung_gpio_chip *chip) +{ + void __iomem *base = chip->base; + u32 old_gpcon[2]; + u32 old_gpdat = __raw_readl(base + OFFS_DAT); + u32 gps_gpdat = chip->pm_save[2]; + + /* First, modify the CON settings */ + + old_gpcon[0] = 0; + old_gpcon[1] = __raw_readl(base + OFFS_CON); + + samsung_gpio_pm_4bit_con(chip, 0); + if (chip->chip.ngpio > 8) { + old_gpcon[0] = __raw_readl(base - 4); + samsung_gpio_pm_4bit_con(chip, -1); + } + + /* Now change the configurations that require DAT,CON */ + + __raw_writel(chip->pm_save[2], base + OFFS_DAT); + __raw_writel(chip->pm_save[1], base + OFFS_CON); + if (chip->chip.ngpio > 8) + __raw_writel(chip->pm_save[0], base - 4); + + __raw_writel(chip->pm_save[2], base + OFFS_DAT); + __raw_writel(chip->pm_save[3], base + OFFS_UP); + + if (chip->chip.ngpio > 8) { + S3C_PMDBG("%s: CON4 %08x,%08x => %08x,%08x, DAT %08x => %08x\n", + chip->chip.label, old_gpcon[0], old_gpcon[1], + __raw_readl(base - 4), + __raw_readl(base + OFFS_CON), + old_gpdat, gps_gpdat); + } else + S3C_PMDBG("%s: CON4 %08x => %08x, DAT %08x => %08x\n", + chip->chip.label, old_gpcon[1], + __raw_readl(base + OFFS_CON), + old_gpdat, gps_gpdat); +} + +struct samsung_gpio_pm samsung_gpio_pm_4bit = { + .save = samsung_gpio_pm_4bit_save, + .resume = samsung_gpio_pm_4bit_resume, +}; +#endif /* CONFIG_ARCH_S3C64XX */ + +/** + * samsung_pm_save_gpio() - save gpio chip data for suspend + * @ourchip: The chip for suspend. + */ +static void samsung_pm_save_gpio(struct samsung_gpio_chip *ourchip) +{ + struct samsung_gpio_pm *pm = ourchip->pm; + + if (pm == NULL || pm->save == NULL) + S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label); + else + pm->save(ourchip); +} + +/** + * samsung_pm_save_gpios() - Save the state of the GPIO banks. + * + * For all the GPIO banks, save the state of each one ready for going + * into a suspend mode. + */ +void samsung_pm_save_gpios(void) +{ + struct samsung_gpio_chip *ourchip; + unsigned int gpio_nr; + + for (gpio_nr = 0; gpio_nr < S3C_GPIO_END;) { + ourchip = samsung_gpiolib_getchip(gpio_nr); + if (!ourchip) { + gpio_nr++; + continue; + } + + samsung_pm_save_gpio(ourchip); + + S3C_PMDBG("%s: save %08x,%08x,%08x,%08x\n", + ourchip->chip.label, + ourchip->pm_save[0], + ourchip->pm_save[1], + ourchip->pm_save[2], + ourchip->pm_save[3]); + + gpio_nr += ourchip->chip.ngpio; + gpio_nr += CONFIG_S3C_GPIO_SPACE; + } +} + +/** + * samsung_pm_resume_gpio() - restore gpio chip data after suspend + * @ourchip: The suspended chip. + */ +static void samsung_pm_resume_gpio(struct samsung_gpio_chip *ourchip) +{ + struct samsung_gpio_pm *pm = ourchip->pm; + + if (pm == NULL || pm->resume == NULL) + S3C_PMDBG("%s: no pm for %s\n", __func__, ourchip->chip.label); + else + pm->resume(ourchip); +} + +void samsung_pm_restore_gpios(void) +{ + struct samsung_gpio_chip *ourchip; + unsigned int gpio_nr; + + for (gpio_nr = 0; gpio_nr < S3C_GPIO_END;) { + ourchip = samsung_gpiolib_getchip(gpio_nr); + if (!ourchip) { + gpio_nr++; + continue; + } + + samsung_pm_resume_gpio(ourchip); + + gpio_nr += ourchip->chip.ngpio; + gpio_nr += CONFIG_S3C_GPIO_SPACE; + } +} diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c new file mode 100644 index 000000000..d6bfd6659 --- /dev/null +++ b/arch/arm/plat-samsung/pm.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright 2008 Openmoko, Inc. +// Copyright 2004-2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// http://armlinux.simtec.co.uk/ +// +// S3C common power management (suspend to ram) support. + +#include <linux/init.h> +#include <linux/suspend.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/of.h> +#include <linux/serial_s3c.h> +#include <linux/io.h> + +#include <asm/cacheflush.h> +#include <asm/suspend.h> + +#include <mach/map.h> +#include <mach/regs-clock.h> +#include <mach/regs-irq.h> +#include <mach/irqs.h> + +#include <asm/irq.h> + +#include <plat/pm.h> +#include <mach/pm-core.h> + +/* for external use */ + +unsigned long s3c_pm_flags; + +/* The IRQ ext-int code goes here, it is too small to currently bother + * with its own file. */ + +unsigned long s3c_irqwake_intmask = 0xffffffffL; +unsigned long s3c_irqwake_eintmask = 0xffffffffL; + +int s3c_irqext_wake(struct irq_data *data, unsigned int state) +{ + unsigned long bit = 1L << IRQ_EINT_BIT(data->irq); + + if (!(s3c_irqwake_eintallow & bit)) + return -ENOENT; + + printk(KERN_INFO "wake %s for irq %d\n", + state ? "enabled" : "disabled", data->irq); + + if (!state) + s3c_irqwake_eintmask |= bit; + else + s3c_irqwake_eintmask &= ~bit; + + return 0; +} + +void (*pm_cpu_prep)(void); +int (*pm_cpu_sleep)(unsigned long); + +#define any_allowed(mask, allow) (((mask) & (allow)) != (allow)) + +/* s3c_pm_enter + * + * central control for sleep/resume process +*/ + +static int s3c_pm_enter(suspend_state_t state) +{ + int ret; + /* ensure the debug is initialised (if enabled) */ + + s3c_pm_debug_init(); + + S3C_PMDBG("%s(%d)\n", __func__, state); + + if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) { + printk(KERN_ERR "%s: error: no cpu sleep function\n", __func__); + return -EINVAL; + } + + /* check if we have anything to wake-up with... bad things seem + * to happen if you suspend with no wakeup (system will often + * require a full power-cycle) + */ + + if (!of_have_populated_dt() && + !any_allowed(s3c_irqwake_intmask, s3c_irqwake_intallow) && + !any_allowed(s3c_irqwake_eintmask, s3c_irqwake_eintallow)) { + printk(KERN_ERR "%s: No wake-up sources!\n", __func__); + printk(KERN_ERR "%s: Aborting sleep\n", __func__); + return -EINVAL; + } + + /* save all necessary core registers not covered by the drivers */ + + if (!of_have_populated_dt()) { + samsung_pm_save_gpios(); + samsung_pm_saved_gpios(); + } + + s3c_pm_save_uarts(); + s3c_pm_save_core(); + + /* set the irq configuration for wake */ + + s3c_pm_configure_extint(); + + S3C_PMDBG("sleep: irq wakeup masks: %08lx,%08lx\n", + s3c_irqwake_intmask, s3c_irqwake_eintmask); + + s3c_pm_arch_prepare_irqs(); + + /* call cpu specific preparation */ + + pm_cpu_prep(); + + /* flush cache back to ram */ + + flush_cache_all(); + + s3c_pm_check_store(); + + /* send the cpu to sleep... */ + + s3c_pm_arch_stop_clocks(); + + /* this will also act as our return point from when + * we resume as it saves its own register state and restores it + * during the resume. */ + + ret = cpu_suspend(0, pm_cpu_sleep); + if (ret) + return ret; + + /* restore the system state */ + + s3c_pm_restore_core(); + s3c_pm_restore_uarts(); + + if (!of_have_populated_dt()) { + samsung_pm_restore_gpios(); + s3c_pm_restored_gpios(); + } + + s3c_pm_debug_init(); + + /* check what irq (if any) restored the system */ + + s3c_pm_arch_show_resume_irqs(); + + S3C_PMDBG("%s: post sleep, preparing to return\n", __func__); + + /* LEDs should now be 1110 */ + s3c_pm_debug_smdkled(1 << 1, 0); + + s3c_pm_check_restore(); + + /* ok, let's return from sleep */ + + S3C_PMDBG("S3C PM Resume (post-restore)\n"); + return 0; +} + +static int s3c_pm_prepare(void) +{ + /* prepare check area if configured */ + + s3c_pm_check_prepare(); + return 0; +} + +static void s3c_pm_finish(void) +{ + s3c_pm_check_cleanup(); +} + +static const struct platform_suspend_ops s3c_pm_ops = { + .enter = s3c_pm_enter, + .prepare = s3c_pm_prepare, + .finish = s3c_pm_finish, + .valid = suspend_valid_only_mem, +}; + +/* s3c_pm_init + * + * Attach the power management functions. This should be called + * from the board specific initialisation if the board supports + * it. +*/ + +int __init s3c_pm_init(void) +{ + printk("S3C Power Management, Copyright 2004 Simtec Electronics\n"); + + suspend_set_ops(&s3c_pm_ops); + return 0; +} diff --git a/arch/arm/plat-samsung/wakeup-mask.c b/arch/arm/plat-samsung/wakeup-mask.c new file mode 100644 index 000000000..24f96fb80 --- /dev/null +++ b/arch/arm/plat-samsung/wakeup-mask.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright 2010 Ben Dooks <ben-linux@fluff.org> +// +// Support for wakeup mask interrupts on newer SoCs + +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/device.h> +#include <linux/types.h> +#include <linux/irq.h> +#include <linux/io.h> + +#include <plat/wakeup-mask.h> +#include <plat/pm.h> + +void samsung_sync_wakemask(void __iomem *reg, + const struct samsung_wakeup_mask *mask, int nr_mask) +{ + struct irq_data *data; + u32 val; + + val = __raw_readl(reg); + + for (; nr_mask > 0; nr_mask--, mask++) { + if (mask->irq == NO_WAKEUP_IRQ) { + val |= mask->bit; + continue; + } + + data = irq_get_irq_data(mask->irq); + + /* bit of a liberty to read this directly from irq_data. */ + if (irqd_is_wakeup_set(data)) + val &= ~mask->bit; + else + val |= mask->bit; + } + + printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val); + __raw_writel(val, reg); +} diff --git a/arch/arm/plat-samsung/watchdog-reset.c b/arch/arm/plat-samsung/watchdog-reset.c new file mode 100644 index 000000000..71d85ff32 --- /dev/null +++ b/arch/arm/plat-samsung/watchdog-reset.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2008 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// +// Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com> +// +// Watchdog reset support for Samsung SoCs. + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/of.h> +#include <linux/of_address.h> + +#define S3C2410_WTCON 0x00 +#define S3C2410_WTDAT 0x04 +#define S3C2410_WTCNT 0x08 + +#define S3C2410_WTCON_ENABLE (1 << 5) +#define S3C2410_WTCON_DIV16 (0 << 3) +#define S3C2410_WTCON_RSTEN (1 << 0) +#define S3C2410_WTCON_PRESCALE(x) ((x) << 8) + +static void __iomem *wdt_base; +static struct clk *wdt_clock; + +void samsung_wdt_reset(void) +{ + if (!wdt_base) { + pr_err("%s: wdt reset not initialized\n", __func__); + /* delay to allow the serial port to show the message */ + mdelay(50); + return; + } + + if (!IS_ERR(wdt_clock)) + clk_prepare_enable(wdt_clock); + + /* disable watchdog, to be safe */ + __raw_writel(0, wdt_base + S3C2410_WTCON); + + /* put initial values into count and data */ + __raw_writel(0x80, wdt_base + S3C2410_WTCNT); + __raw_writel(0x80, wdt_base + S3C2410_WTDAT); + + /* set the watchdog to go and reset... */ + __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV16 | + S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x20), + wdt_base + S3C2410_WTCON); + + /* wait for reset to assert... */ + mdelay(500); + + pr_err("Watchdog reset failed to assert reset\n"); + + /* delay to allow the serial port to show the message */ + mdelay(50); +} + +#ifdef CONFIG_OF +static const struct of_device_id s3c2410_wdt_match[] = { + { .compatible = "samsung,s3c2410-wdt" }, + { .compatible = "samsung,s3c6410-wdt" }, + {}, +}; + +void __init samsung_wdt_reset_of_init(void) +{ + struct device_node *np; + + np = of_find_matching_node(NULL, s3c2410_wdt_match); + if (!np) { + pr_err("%s: failed to find watchdog node\n", __func__); + return; + } + + wdt_base = of_iomap(np, 0); + if (!wdt_base) { + pr_err("%s: failed to map watchdog registers\n", __func__); + return; + } + + wdt_clock = of_clk_get(np, 0); +} +#endif + +void __init samsung_wdt_reset_init(void __iomem *base) +{ + wdt_base = base; + wdt_clock = clk_get(NULL, "watchdog"); +} |