diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-s3c/mach-n30.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-s3c/mach-n30.c')
-rw-r--r-- | arch/arm/mach-s3c/mach-n30.c | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/mach-n30.c b/arch/arm/mach-s3c/mach-n30.c new file mode 100644 index 000000000..90122fc6b --- /dev/null +++ b/arch/arm/mach-s3c/mach-n30.c @@ -0,0 +1,682 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Machine specific code for the Acer n30, Acer N35, Navman PiN 570, +// Yakumo AlphaX and Airis NC05 PDAs. +// +// Copyright (c) 2003-2005 Simtec Electronics +// Ben Dooks <ben@simtec.co.uk> +// +// Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se> +// +// There is a wiki with more information about the n30 port at +// https://handhelds.org/moin/moin.cgi/AcerN30Documentation . + +#include <linux/kernel.h> +#include <linux/types.h> + +#include <linux/gpio_keys.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <linux/gpio/machine.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/timer.h> +#include <linux/io.h> +#include <linux/mmc/host.h> + +#include "hardware-s3c24xx.h" +#include <asm/irq.h> +#include <asm/mach-types.h> + +#include <linux/platform_data/fb-s3c2410.h> +#include <linux/platform_data/leds-s3c24xx.h> +#include "regs-gpio.h" +#include "gpio-samsung.h" +#include "gpio-cfg.h" + +#include <asm/mach/arch.h> +#include <asm/mach/irq.h> +#include <asm/mach/map.h> + +#include <linux/platform_data/i2c-s3c2410.h> + +#include "cpu.h" +#include "devs.h" +#include <linux/platform_data/mmc-s3cmci.h> +#include <linux/platform_data/usb-s3c2410_udc.h> + +#include "s3c24xx.h" + +static struct map_desc n30_iodesc[] __initdata = { + /* nothing here yet */ +}; + +static struct s3c2410_uartcfg n30_uartcfgs[] = { + /* Normal serial port */ + [0] = { + .hwport = 0, + .flags = 0, + .ucon = 0x2c5, + .ulcon = 0x03, + .ufcon = 0x51, + }, + /* IR port */ + [1] = { + .hwport = 1, + .flags = 0, + .uart_flags = UPF_CONS_FLOW, + .ucon = 0x2c5, + .ulcon = 0x43, + .ufcon = 0x51, + }, + /* On the N30 the bluetooth controller is connected here. + * On the N35 and variants the GPS receiver is connected here. */ + [2] = { + .hwport = 2, + .flags = 0, + .ucon = 0x2c5, + .ulcon = 0x03, + .ufcon = 0x51, + }, +}; + +static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = { +}; + +static struct gpiod_lookup_table n30_udc_gpio_table = { + .dev_id = "s3c2410-usbgadget", + .table = { + GPIO_LOOKUP("GPIOG", 1, "vbus", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("GPIOB", 3, "pullup", GPIO_ACTIVE_HIGH), + { }, + }, +}; + +static struct gpio_keys_button n30_buttons[] = { + { + .gpio = S3C2410_GPF(0), + .code = KEY_POWER, + .desc = "Power", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(9), + .code = KEY_UP, + .desc = "Thumbwheel Up", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(8), + .code = KEY_DOWN, + .desc = "Thumbwheel Down", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(7), + .code = KEY_ENTER, + .desc = "Thumbwheel Press", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(7), + .code = KEY_HOMEPAGE, + .desc = "Home", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(6), + .code = KEY_CALENDAR, + .desc = "Calendar", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(5), + .code = KEY_ADDRESSBOOK, + .desc = "Contacts", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(4), + .code = KEY_MAIL, + .desc = "Mail", + .active_low = 0, + }, +}; + +static struct gpio_keys_platform_data n30_button_data = { + .buttons = n30_buttons, + .nbuttons = ARRAY_SIZE(n30_buttons), +}; + +static struct platform_device n30_button_device = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &n30_button_data, + } +}; + +static struct gpio_keys_button n35_buttons[] = { + { + .gpio = S3C2410_GPF(0), + .code = KEY_POWER, + .type = EV_PWR, + .desc = "Power", + .active_low = 0, + .wakeup = 1, + }, + { + .gpio = S3C2410_GPG(9), + .code = KEY_UP, + .desc = "Joystick Up", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(8), + .code = KEY_DOWN, + .desc = "Joystick Down", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(6), + .code = KEY_DOWN, + .desc = "Joystick Left", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(5), + .code = KEY_DOWN, + .desc = "Joystick Right", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(7), + .code = KEY_ENTER, + .desc = "Joystick Press", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(7), + .code = KEY_HOMEPAGE, + .desc = "Home", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(6), + .code = KEY_CALENDAR, + .desc = "Calendar", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(5), + .code = KEY_ADDRESSBOOK, + .desc = "Contacts", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(4), + .code = KEY_MAIL, + .desc = "Mail", + .active_low = 0, + }, + { + .gpio = S3C2410_GPF(3), + .code = SW_RADIO, + .desc = "GPS Antenna", + .active_low = 0, + }, + { + .gpio = S3C2410_GPG(2), + .code = SW_HEADPHONE_INSERT, + .desc = "Headphone", + .active_low = 0, + }, +}; + +static struct gpio_keys_platform_data n35_button_data = { + .buttons = n35_buttons, + .nbuttons = ARRAY_SIZE(n35_buttons), +}; + +static struct platform_device n35_button_device = { + .name = "gpio-keys", + .id = -1, + .num_resources = 0, + .dev = { + .platform_data = &n35_button_data, + } +}; + +/* This is the bluetooth LED on the device. */ + +static struct gpiod_lookup_table n30_blue_led_gpio_table = { + .dev_id = "s3c24xx_led.1", + .table = { + GPIO_LOOKUP("GPG", 6, NULL, GPIO_ACTIVE_HIGH), + { }, + }, +}; + +static struct s3c24xx_led_platdata n30_blue_led_pdata = { + .name = "blue_led", + .def_trigger = "", +}; + +/* This is the blue LED on the device. Originally used to indicate GPS activity + * by flashing. */ + +static struct gpiod_lookup_table n35_blue_led_gpio_table = { + .dev_id = "s3c24xx_led.1", + .table = { + GPIO_LOOKUP("GPD", 8, NULL, GPIO_ACTIVE_HIGH), + { }, + }, +}; + +static struct s3c24xx_led_platdata n35_blue_led_pdata = { + .name = "blue_led", + .def_trigger = "", +}; + +/* This LED is driven by the battery microcontroller, and is blinking + * red, blinking green or solid green when the battery is low, + * charging or full respectively. By driving GPD9 low, it's possible + * to force the LED to blink red, so call that warning LED. */ + +static struct gpiod_lookup_table n30_warning_led_gpio_table = { + .dev_id = "s3c24xx_led.2", + .table = { + GPIO_LOOKUP("GPD", 9, NULL, GPIO_ACTIVE_LOW), + { }, + }, +}; + +static struct s3c24xx_led_platdata n30_warning_led_pdata = { + .name = "warning_led", + .def_trigger = "", +}; + +static struct gpiod_lookup_table n35_warning_led_gpio_table = { + .dev_id = "s3c24xx_led.2", + .table = { + GPIO_LOOKUP("GPD", 9, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN), + { }, + }, +}; + +static struct s3c24xx_led_platdata n35_warning_led_pdata = { + .name = "warning_led", + .def_trigger = "", +}; + +static struct platform_device n30_blue_led = { + .name = "s3c24xx_led", + .id = 1, + .dev = { + .platform_data = &n30_blue_led_pdata, + }, +}; + +static struct platform_device n35_blue_led = { + .name = "s3c24xx_led", + .id = 1, + .dev = { + .platform_data = &n35_blue_led_pdata, + }, +}; + +static struct platform_device n30_warning_led = { + .name = "s3c24xx_led", + .id = 2, + .dev = { + .platform_data = &n30_warning_led_pdata, + }, +}; + +static struct platform_device n35_warning_led = { + .name = "s3c24xx_led", + .id = 2, + .dev = { + .platform_data = &n35_warning_led_pdata, + }, +}; + +static struct s3c2410fb_display n30_display __initdata = { + .type = S3C2410_LCDCON1_TFT, + .width = 240, + .height = 320, + .pixclock = 170000, + + .xres = 240, + .yres = 320, + .bpp = 16, + .left_margin = 3, + .right_margin = 40, + .hsync_len = 40, + .upper_margin = 2, + .lower_margin = 3, + .vsync_len = 2, + + .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME, +}; + +static struct s3c2410fb_mach_info n30_fb_info __initdata = { + .displays = &n30_display, + .num_displays = 1, + .default_display = 0, + .lpcsel = 0x06, +}; + +static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd) +{ + s3c24xx_mci_def_set_power(power_mode, vdd); + + switch (power_mode) { + case MMC_POWER_ON: + case MMC_POWER_UP: + gpio_set_value(S3C2410_GPG(4), 1); + break; + case MMC_POWER_OFF: + default: + gpio_set_value(S3C2410_GPG(4), 0); + break; + } +} + +static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = { + .ocr_avail = MMC_VDD_32_33, + .set_power = n30_sdi_set_power, +}; + +static struct gpiod_lookup_table n30_mci_gpio_table = { + .dev_id = "s3c2410-sdi", + .table = { + /* Card detect S3C2410_GPF(1) */ + GPIO_LOOKUP("GPIOF", 1, "cd", GPIO_ACTIVE_LOW), + /* Write protect S3C2410_GPG(10) */ + GPIO_LOOKUP("GPIOG", 10, "wp", GPIO_ACTIVE_LOW), + { }, + /* bus pins */ + GPIO_LOOKUP_IDX("GPIOE", 5, "bus", 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("GPIOE", 6, "bus", 1, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("GPIOE", 7, "bus", 2, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("GPIOE", 8, "bus", 3, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("GPIOE", 9, "bus", 4, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH), + }, +}; + +static struct platform_device *n30_devices[] __initdata = { + &s3c_device_lcd, + &s3c_device_wdt, + &s3c_device_i2c0, + &s3c_device_iis, + &s3c_device_ohci, + &s3c_device_rtc, + &s3c_device_usbgadget, + &s3c_device_sdi, + &n30_button_device, + &n30_blue_led, + &n30_warning_led, +}; + +static struct platform_device *n35_devices[] __initdata = { + &s3c_device_lcd, + &s3c_device_wdt, + &s3c_device_i2c0, + &s3c_device_iis, + &s3c_device_rtc, + &s3c_device_usbgadget, + &s3c_device_sdi, + &n35_button_device, + &n35_blue_led, + &n35_warning_led, +}; + +static struct s3c2410_platform_i2c __initdata n30_i2ccfg = { + .flags = 0, + .slave_addr = 0x10, + .frequency = 10*1000, +}; + +/* Lots of hardcoded stuff, but it sets up the hardware in a useful + * state so that we can boot Linux directly from flash. */ +static void __init n30_hwinit(void) +{ + /* GPA0-11 special functions -- unknown what they do + * GPA12 N30 special function -- unknown what it does + * N35/PiN output -- unknown what it does + * + * A12 is nGCS1 on the N30 and an output on the N35/PiN. I + * don't think it does anything useful on the N30, so I ought + * to make it an output there too since it always driven to 0 + * as far as I can tell. */ + if (machine_is_n30()) + __raw_writel(0x007fffff, S3C2410_GPACON); + if (machine_is_n35()) + __raw_writel(0x007fefff, S3C2410_GPACON); + __raw_writel(0x00000000, S3C2410_GPADAT); + + /* GPB0 TOUT0 backlight level + * GPB1 output 1=backlight on + * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled + * GPB3 output USB D+ pull up 0=disabled, 1=enabled + * GPB4 N30 output -- unknown function + * N30/PiN GPS control 0=GPS enabled, 1=GPS disabled + * GPB5 output -- unknown function + * GPB6 input -- unknown function + * GPB7 output -- unknown function + * GPB8 output -- probably LCD driver enable + * GPB9 output -- probably LCD VSYNC driver enable + * GPB10 output -- probably LCD HSYNC driver enable + */ + __raw_writel(0x00154556, S3C2410_GPBCON); + __raw_writel(0x00000750, S3C2410_GPBDAT); + __raw_writel(0x00000073, S3C2410_GPBUP); + + /* GPC0 input RS232 DCD/DSR/RI + * GPC1 LCD + * GPC2 output RS232 DTR? + * GPC3 input RS232 DCD/DSR/RI + * GPC4 LCD + * GPC5 output 0=NAND write enabled, 1=NAND write protect + * GPC6 input -- unknown function + * GPC7 input charger status 0=charger connected + * this input can be triggered by power on the USB device + * port too, but will go back to disconnected soon after. + * GPC8 N30/N35 output -- unknown function, always driven to 1 + * PiN input -- unknown function, always read as 1 + * Make it an input with a pull up for all models. + * GPC9-15 LCD + */ + __raw_writel(0xaaa80618, S3C2410_GPCCON); + __raw_writel(0x0000014c, S3C2410_GPCDAT); + __raw_writel(0x0000fef2, S3C2410_GPCUP); + + /* GPD0 input -- unknown function + * GPD1-D7 LCD + * GPD8 N30 output -- unknown function + * N35/PiN output 1=GPS LED on + * GPD9 output 0=power led blinks red, 1=normal power led function + * GPD10 output -- unknown function + * GPD11-15 LCD drivers + */ + __raw_writel(0xaa95aaa4, S3C2410_GPDCON); + __raw_writel(0x00000601, S3C2410_GPDDAT); + __raw_writel(0x0000fbfe, S3C2410_GPDUP); + + /* GPE0-4 I2S audio bus + * GPE5-10 SD/MMC bus + * E11-13 outputs -- unknown function, probably power management + * E14-15 I2C bus connected to the battery controller + */ + __raw_writel(0xa56aaaaa, S3C2410_GPECON); + __raw_writel(0x0000efc5, S3C2410_GPEDAT); + __raw_writel(0x0000f81f, S3C2410_GPEUP); + + /* GPF0 input 0=power button pressed + * GPF1 input SD/MMC switch 0=card present + * GPF2 N30 1=reset button pressed (inverted compared to the rest) + * N35/PiN 0=reset button pressed + * GPF3 N30/PiN input -- unknown function + * N35 input GPS antenna position, 0=antenna closed, 1=open + * GPF4 input 0=button 4 pressed + * GPF5 input 0=button 3 pressed + * GPF6 input 0=button 2 pressed + * GPF7 input 0=button 1 pressed + */ + __raw_writel(0x0000aaaa, S3C2410_GPFCON); + __raw_writel(0x00000000, S3C2410_GPFDAT); + __raw_writel(0x000000ff, S3C2410_GPFUP); + + /* GPG0 input RS232 DCD/DSR/RI + * GPG1 input 1=USB gadget port has power from a host + * GPG2 N30 input -- unknown function + * N35/PiN input 0=headphones plugged in, 1=not plugged in + * GPG3 N30 output -- unknown function + * N35/PiN input with unknown function + * GPG4 N30 output 0=MMC enabled, 1=MMC disabled + * GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled + * N35/PiN input joystick right + * GPG6 N30 output 0=blue led on, 1=off + * N35/PiN input joystick left + * GPG7 input 0=thumbwheel pressed + * GPG8 input 0=thumbwheel down + * GPG9 input 0=thumbwheel up + * GPG10 input SD/MMC write protect switch + * GPG11 N30 input -- unknown function + * N35 output 0=GPS antenna powered, 1=not powered + * PiN output -- unknown function + * GPG12-15 touch screen functions + * + * The pullups differ between the models, so enable all + * pullups that are enabled on any of the models. + */ + if (machine_is_n30()) + __raw_writel(0xff0a956a, S3C2410_GPGCON); + if (machine_is_n35()) + __raw_writel(0xff4aa92a, S3C2410_GPGCON); + __raw_writel(0x0000e800, S3C2410_GPGDAT); + __raw_writel(0x0000f86f, S3C2410_GPGUP); + + /* GPH0/1/2/3 RS232 serial port + * GPH4/5 IrDA serial port + * GPH6/7 N30 BlueTooth serial port + * N35/PiN GPS receiver + * GPH8 input -- unknown function + * GPH9 CLKOUT0 HCLK -- unknown use + * GPH10 CLKOUT1 FCLK -- unknown use + * + * The pull ups for H6/H7 are enabled on N30 but not on the + * N35/PiN. I suppose is useful for a budget model of the N30 + * with no bluetooth. It doesn't hurt to have the pull ups + * enabled on the N35, so leave them enabled for all models. + */ + __raw_writel(0x0028aaaa, S3C2410_GPHCON); + __raw_writel(0x000005ef, S3C2410_GPHDAT); + __raw_writel(0x0000063f, S3C2410_GPHUP); +} + +static void __init n30_map_io(void) +{ + s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc)); + n30_hwinit(); + s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs)); + s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4); +} + +static void __init n30_init_time(void) +{ + s3c2410_init_clocks(12000000); + s3c24xx_timer_init(); +} + +/* GPB3 is the line that controls the pull-up for the USB D+ line */ + +static void __init n30_init(void) +{ + WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power")); + + s3c24xx_fb_set_platdata(&n30_fb_info); + gpiod_add_lookup_table(&n30_udc_gpio_table); + s3c24xx_udc_set_platdata(&n30_udc_cfg); + gpiod_add_lookup_table(&n30_mci_gpio_table); + s3c24xx_mci_set_platdata(&n30_mci_cfg); + s3c_i2c0_set_platdata(&n30_i2ccfg); + + /* Turn off suspend on both USB ports, and switch the + * selectable USB port to USB device mode. */ + + s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST | + S3C2410_MISCCR_USBSUSPND0 | + S3C2410_MISCCR_USBSUSPND1, 0x0); + + /* Configure the I2S pins (GPE0...GPE4) in correct mode */ + s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), + S3C_GPIO_PULL_NONE); + + if (machine_is_n30()) { + /* Turn off suspend on both USB ports, and switch the + * selectable USB port to USB device mode. */ + s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST | + S3C2410_MISCCR_USBSUSPND0 | + S3C2410_MISCCR_USBSUSPND1, 0x0); + + /* Disable pull-up and add GPIO tables */ + s3c_gpio_setpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE); + gpiod_add_lookup_table(&n30_blue_led_gpio_table); + gpiod_add_lookup_table(&n30_warning_led_gpio_table); + + platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices)); + } + + if (machine_is_n35()) { + /* Turn off suspend and switch the selectable USB port + * to USB device mode. Turn on suspend for the host + * port since it is not connected on the N35. + * + * Actually, the host port is available at some pads + * on the back of the device, so it would actually be + * possible to add a USB device inside the N35 if you + * are willing to do some hardware modifications. */ + s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST | + S3C2410_MISCCR_USBSUSPND0 | + S3C2410_MISCCR_USBSUSPND1, + S3C2410_MISCCR_USBSUSPND0); + + /* Disable pull-up and add GPIO tables */ + s3c_gpio_setpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE); + gpiod_add_lookup_table(&n35_blue_led_gpio_table); + gpiod_add_lookup_table(&n35_warning_led_gpio_table); + + platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices)); + } +} + +MACHINE_START(N30, "Acer-N30") + /* Maintainer: Christer Weinigel <christer@weinigel.se>, + Ben Dooks <ben-linux@fluff.org> + */ + .atag_offset = 0x100, + .nr_irqs = NR_IRQS_S3C2410, + .init_time = n30_init_time, + .init_machine = n30_init, + .init_irq = s3c2410_init_irq, + .map_io = n30_map_io, +MACHINE_END + +MACHINE_START(N35, "Acer-N35") + /* Maintainer: Christer Weinigel <christer@weinigel.se> + */ + .atag_offset = 0x100, + .nr_irqs = NR_IRQS_S3C2410, + .init_time = n30_init_time, + .init_machine = n30_init, + .init_irq = s3c2410_init_irq, + .map_io = n30_map_io, +MACHINE_END |