diff options
Diffstat (limited to 'arch/arm/mach-omap1/board-osk.c')
| -rw-r--r-- | arch/arm/mach-omap1/board-osk.c | 664 |
1 files changed, 664 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c new file mode 100644 index 000000000..76684b7a4 --- /dev/null +++ b/arch/arm/mach-omap1/board-osk.c @@ -0,0 +1,664 @@ +/* + * linux/arch/arm/mach-omap1/board-osk.c + * + * Board specific init for OMAP5912 OSK + * + * Written by Dirk Behme <dirk.behme@de.bosch.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/gpio.h> +#include <linux/gpio/machine.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/i2c.h> +#include <linux/leds.h> +#include <linux/smc91x.h> +#include <linux/omapfb.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <linux/mfd/tps65010.h> +#include <linux/platform_data/gpio-omap.h> +#include <linux/platform_data/omap1_bl.h> +#include <linux/soc/ti/omap1-io.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include "tc.h" +#include "flash.h" +#include "mux.h" +#include "hardware.h" +#include "usb.h" +#include "common.h" + +/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */ +#define OMAP_GPIO_LABEL "gpio-0-15" + +/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */ +#define OMAP_OSK_ETHR_START 0x04800300 + +/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with + * alternate pin configurations for hardware-controlled blinking. + */ +#define OSK_TPS_GPIO_BASE (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */) +# define OSK_TPS_GPIO_USB_PWR_EN (OSK_TPS_GPIO_BASE + 0) +# define OSK_TPS_GPIO_LED_D3 (OSK_TPS_GPIO_BASE + 1) +# define OSK_TPS_GPIO_LAN_RESET (OSK_TPS_GPIO_BASE + 2) +# define OSK_TPS_GPIO_DSP_PWR_EN (OSK_TPS_GPIO_BASE + 3) +# define OSK_TPS_GPIO_LED_D9 (OSK_TPS_GPIO_BASE + 4) +# define OSK_TPS_GPIO_LED_D2 (OSK_TPS_GPIO_BASE + 5) + +static struct mtd_partition osk_partitions[] = { + /* bootloader (U-Boot, etc) in first sector */ + { + .name = "bootloader", + .offset = 0, + .size = SZ_128K, + .mask_flags = MTD_WRITEABLE, /* force read-only */ + }, + /* bootloader params in the next sector */ + { + .name = "params", + .offset = MTDPART_OFS_APPEND, + .size = SZ_128K, + .mask_flags = 0, + }, { + .name = "kernel", + .offset = MTDPART_OFS_APPEND, + .size = SZ_2M, + .mask_flags = 0 + }, { + .name = "filesystem", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + .mask_flags = 0 + } +}; + +static struct physmap_flash_data osk_flash_data = { + .width = 2, + .set_vpp = omap1_set_vpp, + .parts = osk_partitions, + .nr_parts = ARRAY_SIZE(osk_partitions), +}; + +static struct resource osk_flash_resource = { + /* this is on CS3, wherever it's mapped */ + .flags = IORESOURCE_MEM, +}; + +static struct platform_device osk5912_flash_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &osk_flash_data, + }, + .num_resources = 1, + .resource = &osk_flash_resource, +}; + +static struct smc91x_platdata osk5912_smc91x_info = { + .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, + .leda = RPC_LED_100_10, + .ledb = RPC_LED_TX_RX, +}; + +static struct resource osk5912_smc91x_resources[] = { + [0] = { + .start = OMAP_OSK_ETHR_START, /* Physical */ + .end = OMAP_OSK_ETHR_START + 0xf, + .flags = IORESOURCE_MEM, + }, + [1] = { + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, + }, +}; + +static struct platform_device osk5912_smc91x_device = { + .name = "smc91x", + .id = -1, + .dev = { + .platform_data = &osk5912_smc91x_info, + }, + .num_resources = ARRAY_SIZE(osk5912_smc91x_resources), + .resource = osk5912_smc91x_resources, +}; + +static struct resource osk5912_cf_resources[] = { + [0] = { + .flags = IORESOURCE_IRQ, + }, + [1] = { + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device osk5912_cf_device = { + .name = "omap_cf", + .id = -1, + .num_resources = ARRAY_SIZE(osk5912_cf_resources), + .resource = osk5912_cf_resources, +}; + +static struct platform_device *osk5912_devices[] __initdata = { + &osk5912_flash_device, + &osk5912_smc91x_device, + &osk5912_cf_device, +}; + +static const struct gpio_led tps_leds[] = { + /* NOTE: D9 and D2 have hardware blink support. + * Also, D9 requires non-battery power. + */ + { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9", + .default_trigger = "disk-activity", }, + { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", }, + { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1, + .default_trigger = "heartbeat", }, +}; + +static struct gpio_led_platform_data tps_leds_data = { + .num_leds = 3, + .leds = tps_leds, +}; + +static struct platform_device osk5912_tps_leds = { + .name = "leds-gpio", + .id = 0, + .dev.platform_data = &tps_leds_data, +}; + +static int osk_tps_setup(struct i2c_client *client, void *context) +{ + if (!IS_BUILTIN(CONFIG_TPS65010)) + return -ENOSYS; + + /* Set GPIO 1 HIGH to disable VBUS power supply; + * OHCI driver powers it up/down as needed. + */ + gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en"); + gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1); + /* Free the GPIO again as the driver will request it */ + gpio_free(OSK_TPS_GPIO_USB_PWR_EN); + + /* Set GPIO 2 high so LED D3 is off by default */ + tps65010_set_gpio_out_value(GPIO2, HIGH); + + /* Set GPIO 3 low to take ethernet out of reset */ + gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset"); + gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0); + + /* GPIO4 is VDD_DSP */ + gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power"); + gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1); + /* REVISIT if DSP support isn't configured, power it off ... */ + + /* Let LED1 (D9) blink; leds-gpio may override it */ + tps65010_set_led(LED1, BLINK); + + /* Set LED2 off by default */ + tps65010_set_led(LED2, OFF); + + /* Enable LOW_PWR handshake */ + tps65010_set_low_pwr(ON); + + /* Switch VLDO2 to 3.0V for AIC23 */ + tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V + | TPS_LDO1_ENABLE); + + /* register these three LEDs */ + osk5912_tps_leds.dev.parent = &client->dev; + platform_device_register(&osk5912_tps_leds); + + return 0; +} + +static struct tps65010_board tps_board = { + .base = OSK_TPS_GPIO_BASE, + .outmask = 0x0f, + .setup = osk_tps_setup, +}; + +static struct i2c_board_info __initdata osk_i2c_board_info[] = { + { + /* This device will get the name "i2c-tps65010" */ + I2C_BOARD_INFO("tps65010", 0x48), + .dev_name = "tps65010", + .platform_data = &tps_board, + + }, + { + I2C_BOARD_INFO("tlv320aic23", 0x1B), + }, + /* TODO when driver support is ready: + * - optionally on Mistral, ov9640 camera sensor at 0x30 + */ +}; + +static void __init osk_init_smc91x(void) +{ + u32 l; + + if ((gpio_request(0, "smc_irq")) < 0) { + printk("Error requesting gpio 0 for smc91x irq\n"); + return; + } + + /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */ + l = omap_readl(EMIFS_CCS(1)); + l |= 0x3; + omap_writel(l, EMIFS_CCS(1)); +} + +static void __init osk_init_cf(int seg) +{ + struct resource *res = &osk5912_cf_resources[1]; + + omap_cfg_reg(M7_1610_GPIO62); + if ((gpio_request(62, "cf_irq")) < 0) { + printk("Error requesting gpio 62 for CF irq\n"); + return; + } + + switch (seg) { + /* NOTE: CS0 could be configured too ... */ + case 1: + res->start = OMAP_CS1_PHYS; + break; + case 2: + res->start = OMAP_CS2_PHYS; + break; + case 3: + res->start = omap_cs3_phys(); + break; + } + + res->end = res->start + SZ_8K - 1; + osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg; + + /* NOTE: better EMIFS setup might support more cards; but the + * TRM only shows how to affect regular flash signals, not their + * CF/PCMCIA variants... + */ + pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__, + seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg))); + omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */ + omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */ + + /* the CF I/O IRQ is really active-low */ + irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING); +} + +static struct gpiod_lookup_table osk_usb_gpio_table = { + .dev_id = "ohci", + .table = { + /* Power GPIO on the I2C-attached TPS65010 */ + GPIO_LOOKUP("tps65010", 0, "power", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent", + GPIO_ACTIVE_HIGH), + }, +}; + +static struct omap_usb_config osk_usb_config __initdata = { + /* has usb host connector (A) ... for development it can also + * be used, with a NONSTANDARD gender-bending cable/dongle, as + * a peripheral. + */ +#if IS_ENABLED(CONFIG_USB_OMAP) + .register_dev = 1, + .hmc_mode = 0, +#else + .register_host = 1, + .hmc_mode = 16, + .rwc = 1, +#endif + .pins[0] = 2, +}; + +#ifdef CONFIG_OMAP_OSK_MISTRAL +static const struct omap_lcd_config osk_lcd_config __initconst = { + .ctrl_name = "internal", +}; +#endif + +#ifdef CONFIG_OMAP_OSK_MISTRAL + +#include <linux/input.h> +#include <linux/property.h> +#include <linux/spi/spi.h> +#include <linux/spi/ads7846.h> + +#include <linux/platform_data/keypad-omap.h> + +static const struct property_entry mistral_at24_properties[] = { + PROPERTY_ENTRY_U32("pagesize", 16), + { } +}; + +static const struct software_node mistral_at24_node = { + .properties = mistral_at24_properties, +}; + +static struct i2c_board_info __initdata mistral_i2c_board_info[] = { + { + /* NOTE: powered from LCD supply */ + I2C_BOARD_INFO("24c04", 0x50), + .swnode = &mistral_at24_node, + }, + /* TODO when driver support is ready: + * - optionally ov9640 camera sensor at 0x30 + */ +}; + +static const unsigned int osk_keymap[] = { + /* KEY(col, row, code) */ + KEY(0, 0, KEY_F1), /* SW4 */ + KEY(3, 0, KEY_UP), /* (sw2/up) */ + KEY(1, 1, KEY_LEFTCTRL), /* SW5 */ + KEY(2, 1, KEY_LEFT), /* (sw2/left) */ + KEY(0, 2, KEY_SPACE), /* SW3 */ + KEY(1, 2, KEY_ESC), /* SW6 */ + KEY(2, 2, KEY_DOWN), /* (sw2/down) */ + KEY(2, 3, KEY_ENTER), /* (sw2/select) */ + KEY(3, 3, KEY_RIGHT), /* (sw2/right) */ +}; + +static const struct matrix_keymap_data osk_keymap_data = { + .keymap = osk_keymap, + .keymap_size = ARRAY_SIZE(osk_keymap), +}; + +static struct omap_kp_platform_data osk_kp_data = { + .rows = 8, + .cols = 8, + .keymap_data = &osk_keymap_data, + .delay = 9, +}; + +static struct resource osk5912_kp_resources[] = { + [0] = { + .start = INT_KEYBOARD, + .end = INT_KEYBOARD, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device osk5912_kp_device = { + .name = "omap-keypad", + .id = -1, + .dev = { + .platform_data = &osk_kp_data, + }, + .num_resources = ARRAY_SIZE(osk5912_kp_resources), + .resource = osk5912_kp_resources, +}; + +static struct omap_backlight_config mistral_bl_data = { + .default_intensity = 0xa0, +}; + +static struct platform_device mistral_bl_device = { + .name = "omap-bl", + .id = -1, + .dev = { + .platform_data = &mistral_bl_data, + }, +}; + +static struct platform_device osk5912_lcd_device = { + .name = "lcd_osk", + .id = -1, +}; + +static const struct gpio_led mistral_gpio_led_pins[] = { + { + .name = "mistral:red", + .default_trigger = "heartbeat", + .gpio = 3, + }, + { + .name = "mistral:green", + .default_trigger = "cpu0", + .gpio = OMAP_MPUIO(4), + }, +}; + +static struct gpio_led_platform_data mistral_gpio_led_data = { + .leds = mistral_gpio_led_pins, + .num_leds = ARRAY_SIZE(mistral_gpio_led_pins), +}; + +static struct platform_device mistral_gpio_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &mistral_gpio_led_data, + }, +}; + +static struct platform_device *mistral_devices[] __initdata = { + &osk5912_kp_device, + &mistral_bl_device, + &osk5912_lcd_device, + &mistral_gpio_leds, +}; + +static int mistral_get_pendown_state(void) +{ + return !gpio_get_value(4); +} + +static const struct ads7846_platform_data mistral_ts_info = { + .model = 7846, + .vref_delay_usecs = 100, /* internal, no capacitor */ + .x_plate_ohms = 419, + .y_plate_ohms = 486, + .get_pendown_state = mistral_get_pendown_state, +}; + +static struct spi_board_info __initdata mistral_boardinfo[] = { { + /* MicroWire (bus 2) CS0 has an ads7846e */ + .modalias = "ads7846", + .platform_data = &mistral_ts_info, + .max_speed_hz = 120000 /* max sample rate at 3V */ + * 26 /* command + data + overhead */, + .bus_num = 2, + .chip_select = 0, +} }; + +static irqreturn_t +osk_mistral_wake_interrupt(int irq, void *ignored) +{ + return IRQ_HANDLED; +} + +static void __init osk_mistral_init(void) +{ + /* NOTE: we could actually tell if there's a Mistral board + * attached, e.g. by trying to read something from the ads7846. + * But this arch_init() code is too early for that, since we + * can't talk to the ads or even the i2c eeprom. + */ + + /* parallel camera interface */ + omap_cfg_reg(J15_1610_CAM_LCLK); + omap_cfg_reg(J18_1610_CAM_D7); + omap_cfg_reg(J19_1610_CAM_D6); + omap_cfg_reg(J14_1610_CAM_D5); + omap_cfg_reg(K18_1610_CAM_D4); + omap_cfg_reg(K19_1610_CAM_D3); + omap_cfg_reg(K15_1610_CAM_D2); + omap_cfg_reg(K14_1610_CAM_D1); + omap_cfg_reg(L19_1610_CAM_D0); + omap_cfg_reg(L18_1610_CAM_VS); + omap_cfg_reg(L15_1610_CAM_HS); + omap_cfg_reg(M19_1610_CAM_RSTZ); + omap_cfg_reg(Y15_1610_CAM_OUTCLK); + + /* serial camera interface */ + omap_cfg_reg(H19_1610_CAM_EXCLK); + omap_cfg_reg(W13_1610_CCP_CLKM); + omap_cfg_reg(Y12_1610_CCP_CLKP); + /* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */ + /* omap_cfg_reg(Y14_1610_CCP_DATAM); */ + omap_cfg_reg(W14_1610_CCP_DATAP); + + /* CAM_PWDN */ + if (gpio_request(11, "cam_pwdn") == 0) { + omap_cfg_reg(N20_1610_GPIO11); + gpio_direction_output(11, 0); + } else + pr_debug("OSK+Mistral: CAM_PWDN is awol\n"); + + + /* omap_cfg_reg(P19_1610_GPIO6); */ /* BUSY */ + gpio_request(6, "ts_busy"); + gpio_direction_input(6); + + omap_cfg_reg(P20_1610_GPIO4); /* PENIRQ */ + gpio_request(4, "ts_int"); + gpio_direction_input(4); + irq_set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING); + + mistral_boardinfo[0].irq = gpio_to_irq(4); + spi_register_board_info(mistral_boardinfo, + ARRAY_SIZE(mistral_boardinfo)); + + /* the sideways button (SW1) is for use as a "wakeup" button + * + * NOTE: The Mistral board has the wakeup button (SW1) wired + * to the LCD 3.3V rail, which is powered down during suspend. + * To allow this button to wake up the omap, work around this + * HW bug by rewiring SW1 to use the main 3.3V rail. + */ + omap_cfg_reg(N15_1610_MPUIO2); + if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) { + int ret = 0; + int irq = gpio_to_irq(OMAP_MPUIO(2)); + + gpio_direction_input(OMAP_MPUIO(2)); + irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING); + /* share the IRQ in case someone wants to use the + * button for more than wakeup from system sleep. + */ + ret = request_irq(irq, + &osk_mistral_wake_interrupt, + IRQF_SHARED, "mistral_wakeup", + &osk_mistral_wake_interrupt); + if (ret != 0) { + gpio_free(OMAP_MPUIO(2)); + printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n", + ret); + } else + enable_irq_wake(irq); + } else + printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n"); + + /* LCD: backlight, and power; power controls other devices on the + * board, like the touchscreen, EEPROM, and wakeup (!) switch. + */ + omap_cfg_reg(PWL); + if (gpio_request(2, "lcd_pwr") == 0) + gpio_direction_output(2, 1); + + /* + * GPIO based LEDs + */ + omap_cfg_reg(P18_1610_GPIO3); + omap_cfg_reg(MPUIO4); + + i2c_register_board_info(1, mistral_i2c_board_info, + ARRAY_SIZE(mistral_i2c_board_info)); + + platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices)); +} +#else +static void __init osk_mistral_init(void) { } +#endif + +#define EMIFS_CS3_VAL (0x88013141) + +static void __init osk_init(void) +{ + u32 l; + + osk_init_smc91x(); + osk_init_cf(2); /* CS2 */ + + /* Workaround for wrong CS3 (NOR flash) timing + * There are some U-Boot versions out there which configure + * wrong CS3 memory timings. This mainly leads to CRC + * or similar errors if you use NOR flash (e.g. with JFFS2) + */ + l = omap_readl(EMIFS_CCS(3)); + if (l != EMIFS_CS3_VAL) + omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3)); + + osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys(); + osk_flash_resource.end += SZ_32M - 1; + osk5912_smc91x_resources[1].start = gpio_to_irq(0); + osk5912_smc91x_resources[1].end = gpio_to_irq(0); + osk5912_cf_resources[0].start = gpio_to_irq(62); + osk5912_cf_resources[0].end = gpio_to_irq(62); + platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices)); + + l = omap_readl(USB_TRANSCEIVER_CTRL); + l |= (3 << 1); + omap_writel(l, USB_TRANSCEIVER_CTRL); + + gpiod_add_lookup_table(&osk_usb_gpio_table); + omap1_usb_init(&osk_usb_config); + + /* irq for tps65010 chip */ + /* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */ + if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0) + gpio_direction_input(OMAP_MPUIO(1)); + + omap_serial_init(); + osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1)); + omap_register_i2c_bus(1, 400, osk_i2c_board_info, + ARRAY_SIZE(osk_i2c_board_info)); + osk_mistral_init(); + +#ifdef CONFIG_OMAP_OSK_MISTRAL + omapfb_set_lcd_config(&osk_lcd_config); +#endif + +} + +MACHINE_START(OMAP_OSK, "TI-OSK") + /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */ + .atag_offset = 0x100, + .map_io = omap16xx_map_io, + .init_early = omap1_init_early, + .init_irq = omap1_init_irq, + .handle_irq = omap1_handle_irq, + .init_machine = osk_init, + .init_late = omap1_init_late, + .init_time = omap1_timer_init, + .restart = omap1_restart, +MACHINE_END |