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Diffstat (limited to '')
| -rw-r--r-- | arch/arm/mach-pxa/z2.c | 740 |
1 files changed, 740 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c new file mode 100644 index 000000000..21fd76bb0 --- /dev/null +++ b/arch/arm/mach-pxa/z2.c @@ -0,0 +1,740 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/arch/arm/mach-pxa/z2.c + * + * Support for the Zipit Z2 Handheld device. + * + * Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com> + * + * Based on research and code by: Ken McGuire + * Based on mainstone.c as modified for the Zipit Z2. + */ + +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/pwm.h> +#include <linux/pwm_backlight.h> +#include <linux/z2_battery.h> +#include <linux/dma-mapping.h> +#include <linux/spi/spi.h> +#include <linux/spi/pxa2xx_spi.h> +#include <linux/spi/libertas_spi.h> +#include <linux/spi/lms283gf05.h> +#include <linux/power_supply.h> +#include <linux/mtd/physmap.h> +#include <linux/gpio.h> +#include <linux/gpio/machine.h> +#include <linux/gpio_keys.h> +#include <linux/delay.h> +#include <linux/regulator/machine.h> +#include <linux/platform_data/i2c-pxa.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#include "pxa27x.h" +#include "mfp-pxa27x.h" +#include <mach/z2.h> +#include <linux/platform_data/video-pxafb.h> +#include <linux/platform_data/mmc-pxamci.h> +#include <linux/platform_data/keypad-pxa27x.h> +#include "pm.h" + +#include "generic.h" +#include "devices.h" + +/****************************************************************************** + * Pin configuration + ******************************************************************************/ +static unsigned long z2_pin_config[] = { + + /* LCD - 16bpp Active TFT */ + GPIO58_LCD_LDD_0, + GPIO59_LCD_LDD_1, + GPIO60_LCD_LDD_2, + GPIO61_LCD_LDD_3, + GPIO62_LCD_LDD_4, + GPIO63_LCD_LDD_5, + GPIO64_LCD_LDD_6, + GPIO65_LCD_LDD_7, + GPIO66_LCD_LDD_8, + GPIO67_LCD_LDD_9, + GPIO68_LCD_LDD_10, + GPIO69_LCD_LDD_11, + GPIO70_LCD_LDD_12, + GPIO71_LCD_LDD_13, + GPIO72_LCD_LDD_14, + GPIO73_LCD_LDD_15, + GPIO74_LCD_FCLK, + GPIO75_LCD_LCLK, + GPIO76_LCD_PCLK, + GPIO77_LCD_BIAS, + GPIO19_GPIO, /* LCD reset */ + GPIO88_GPIO, /* LCD chipselect */ + + /* PWM */ + GPIO115_PWM1_OUT, /* Keypad Backlight */ + GPIO11_PWM2_OUT, /* LCD Backlight */ + + /* MMC */ + GPIO32_MMC_CLK, + GPIO112_MMC_CMD, + GPIO92_MMC_DAT_0, + GPIO109_MMC_DAT_1, + GPIO110_MMC_DAT_2, + GPIO111_MMC_DAT_3, + GPIO96_GPIO, /* SD detect */ + + /* STUART */ + GPIO46_STUART_RXD, + GPIO47_STUART_TXD, + + /* Keypad */ + GPIO100_KP_MKIN_0, + GPIO101_KP_MKIN_1, + GPIO102_KP_MKIN_2, + GPIO34_KP_MKIN_3, + GPIO38_KP_MKIN_4, + GPIO16_KP_MKIN_5, + GPIO17_KP_MKIN_6, + GPIO103_KP_MKOUT_0, + GPIO104_KP_MKOUT_1, + GPIO105_KP_MKOUT_2, + GPIO106_KP_MKOUT_3, + GPIO107_KP_MKOUT_4, + GPIO108_KP_MKOUT_5, + GPIO35_KP_MKOUT_6, + GPIO41_KP_MKOUT_7, + + /* I2C */ + GPIO117_I2C_SCL, + GPIO118_I2C_SDA, + + /* SSP1 */ + GPIO23_SSP1_SCLK, /* SSP1_SCK */ + GPIO25_SSP1_TXD, /* SSP1_TXD */ + GPIO26_SSP1_RXD, /* SSP1_RXD */ + + /* SSP2 */ + GPIO22_SSP2_SCLK, /* SSP2_SCK */ + GPIO13_SSP2_TXD, /* SSP2_TXD */ + GPIO40_SSP2_RXD, /* SSP2_RXD */ + + /* LEDs */ + GPIO10_GPIO, /* WiFi LED */ + GPIO83_GPIO, /* Charging LED */ + GPIO85_GPIO, /* Charged LED */ + + /* I2S */ + GPIO28_I2S_BITCLK_OUT, + GPIO29_I2S_SDATA_IN, + GPIO30_I2S_SDATA_OUT, + GPIO31_I2S_SYNC, + GPIO113_I2S_SYSCLK, + + /* MISC */ + GPIO0_GPIO, /* AC power detect */ + GPIO1_GPIO, /* Power button */ + GPIO37_GPIO, /* Headphone detect */ + GPIO98_GPIO, /* Lid switch */ + GPIO14_GPIO, /* WiFi Power */ + GPIO24_GPIO, /* WiFi CS */ + GPIO36_GPIO, /* WiFi IRQ */ + GPIO88_GPIO, /* LCD CS */ +}; + +/****************************************************************************** + * NOR Flash + ******************************************************************************/ +#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE) +static struct resource z2_flash_resource = { + .start = PXA_CS0_PHYS, + .end = PXA_CS0_PHYS + SZ_8M - 1, + .flags = IORESOURCE_MEM, +}; + +static struct mtd_partition z2_flash_parts[] = { + { + .name = "U-Boot Bootloader", + .offset = 0x0, + .size = 0x40000, + }, { + .name = "U-Boot Environment", + .offset = 0x40000, + .size = 0x20000, + }, { + .name = "Flash", + .offset = 0x60000, + .size = MTDPART_SIZ_FULL, + }, +}; + +static struct physmap_flash_data z2_flash_data = { + .width = 2, + .parts = z2_flash_parts, + .nr_parts = ARRAY_SIZE(z2_flash_parts), +}; + +static struct platform_device z2_flash = { + .name = "physmap-flash", + .id = -1, + .resource = &z2_flash_resource, + .num_resources = 1, + .dev = { + .platform_data = &z2_flash_data, + }, +}; + +static void __init z2_nor_init(void) +{ + platform_device_register(&z2_flash); +} +#else +static inline void z2_nor_init(void) {} +#endif + +/****************************************************************************** + * Backlight + ******************************************************************************/ +#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE) +static struct pwm_lookup z2_pwm_lookup[] = { + PWM_LOOKUP("pxa27x-pwm.1", 0, "pwm-backlight.0", NULL, 1260320, + PWM_POLARITY_NORMAL), + PWM_LOOKUP("pxa27x-pwm.0", 1, "pwm-backlight.1", NULL, 1260320, + PWM_POLARITY_NORMAL), +}; + +static struct platform_pwm_backlight_data z2_backlight_data[] = { + [0] = { + /* Keypad Backlight */ + .max_brightness = 1023, + .dft_brightness = 0, + }, + [1] = { + /* LCD Backlight */ + .max_brightness = 1023, + .dft_brightness = 512, + }, +}; + +static struct platform_device z2_backlight_devices[2] = { + { + .name = "pwm-backlight", + .id = 0, + .dev = { + .platform_data = &z2_backlight_data[1], + }, + }, + { + .name = "pwm-backlight", + .id = 1, + .dev = { + .platform_data = &z2_backlight_data[0], + }, + }, +}; +static void __init z2_pwm_init(void) +{ + pwm_add_table(z2_pwm_lookup, ARRAY_SIZE(z2_pwm_lookup)); + platform_device_register(&z2_backlight_devices[0]); + platform_device_register(&z2_backlight_devices[1]); +} +#else +static inline void z2_pwm_init(void) {} +#endif + +/****************************************************************************** + * Framebuffer + ******************************************************************************/ +#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE) +static struct pxafb_mode_info z2_lcd_modes[] = { +{ + .pixclock = 192000, + .xres = 240, + .yres = 320, + .bpp = 16, + + .left_margin = 4, + .right_margin = 8, + .upper_margin = 4, + .lower_margin = 8, + + .hsync_len = 4, + .vsync_len = 4, +}, +}; + +static struct pxafb_mach_info z2_lcd_screen = { + .modes = z2_lcd_modes, + .num_modes = ARRAY_SIZE(z2_lcd_modes), + .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW | + LCD_ALTERNATE_MAPPING, +}; + +static void __init z2_lcd_init(void) +{ + pxa_set_fb_info(NULL, &z2_lcd_screen); +} +#else +static inline void z2_lcd_init(void) {} +#endif + +/****************************************************************************** + * SD/MMC card controller + ******************************************************************************/ +#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE) +static struct pxamci_platform_data z2_mci_platform_data = { + .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, + .detect_delay_ms = 200, +}; + +static struct gpiod_lookup_table z2_mci_gpio_table = { + .dev_id = "pxa2xx-mci.0", + .table = { + GPIO_LOOKUP("gpio-pxa", GPIO96_ZIPITZ2_SD_DETECT, + "cd", GPIO_ACTIVE_LOW), + { }, + }, +}; + +static void __init z2_mmc_init(void) +{ + gpiod_add_lookup_table(&z2_mci_gpio_table); + pxa_set_mci_info(&z2_mci_platform_data); +} +#else +static inline void z2_mmc_init(void) {} +#endif + +/****************************************************************************** + * LEDs + ******************************************************************************/ +#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE) +struct gpio_led z2_gpio_leds[] = { +{ + .name = "z2:green:wifi", + .default_trigger = "none", + .gpio = GPIO10_ZIPITZ2_LED_WIFI, + .active_low = 1, +}, { + .name = "z2:green:charged", + .default_trigger = "mmc0", + .gpio = GPIO85_ZIPITZ2_LED_CHARGED, + .active_low = 1, +}, { + .name = "z2:amber:charging", + .default_trigger = "Z2-charging-or-full", + .gpio = GPIO83_ZIPITZ2_LED_CHARGING, + .active_low = 1, +}, +}; + +static struct gpio_led_platform_data z2_gpio_led_info = { + .leds = z2_gpio_leds, + .num_leds = ARRAY_SIZE(z2_gpio_leds), +}; + +static struct platform_device z2_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &z2_gpio_led_info, + } +}; + +static void __init z2_leds_init(void) +{ + platform_device_register(&z2_leds); +} +#else +static inline void z2_leds_init(void) {} +#endif + +/****************************************************************************** + * GPIO keyboard + ******************************************************************************/ +#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE) +static const unsigned int z2_matrix_keys[] = { + KEY(0, 0, KEY_OPTION), + KEY(1, 0, KEY_UP), + KEY(2, 0, KEY_DOWN), + KEY(3, 0, KEY_LEFT), + KEY(4, 0, KEY_RIGHT), + KEY(5, 0, KEY_END), + KEY(6, 0, KEY_KPPLUS), + + KEY(0, 1, KEY_HOME), + KEY(1, 1, KEY_Q), + KEY(2, 1, KEY_I), + KEY(3, 1, KEY_G), + KEY(4, 1, KEY_X), + KEY(5, 1, KEY_ENTER), + KEY(6, 1, KEY_KPMINUS), + + KEY(0, 2, KEY_PAGEUP), + KEY(1, 2, KEY_W), + KEY(2, 2, KEY_O), + KEY(3, 2, KEY_H), + KEY(4, 2, KEY_C), + KEY(5, 2, KEY_LEFTALT), + + KEY(0, 3, KEY_PAGEDOWN), + KEY(1, 3, KEY_E), + KEY(2, 3, KEY_P), + KEY(3, 3, KEY_J), + KEY(4, 3, KEY_V), + KEY(5, 3, KEY_LEFTSHIFT), + + KEY(0, 4, KEY_ESC), + KEY(1, 4, KEY_R), + KEY(2, 4, KEY_A), + KEY(3, 4, KEY_K), + KEY(4, 4, KEY_B), + KEY(5, 4, KEY_LEFTCTRL), + + KEY(0, 5, KEY_TAB), + KEY(1, 5, KEY_T), + KEY(2, 5, KEY_S), + KEY(3, 5, KEY_L), + KEY(4, 5, KEY_N), + KEY(5, 5, KEY_SPACE), + + KEY(0, 6, KEY_STOPCD), + KEY(1, 6, KEY_Y), + KEY(2, 6, KEY_D), + KEY(3, 6, KEY_BACKSPACE), + KEY(4, 6, KEY_M), + KEY(5, 6, KEY_COMMA), + + KEY(0, 7, KEY_PLAYCD), + KEY(1, 7, KEY_U), + KEY(2, 7, KEY_F), + KEY(3, 7, KEY_Z), + KEY(4, 7, KEY_SEMICOLON), + KEY(5, 7, KEY_DOT), +}; + +static struct matrix_keymap_data z2_matrix_keymap_data = { + .keymap = z2_matrix_keys, + .keymap_size = ARRAY_SIZE(z2_matrix_keys), +}; + +static struct pxa27x_keypad_platform_data z2_keypad_platform_data = { + .matrix_key_rows = 7, + .matrix_key_cols = 8, + .matrix_keymap_data = &z2_matrix_keymap_data, + + .debounce_interval = 30, +}; + +static void __init z2_mkp_init(void) +{ + pxa_set_keypad_info(&z2_keypad_platform_data); +} +#else +static inline void z2_mkp_init(void) {} +#endif + +/****************************************************************************** + * GPIO keys + ******************************************************************************/ +#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE) +static struct gpio_keys_button z2_pxa_buttons[] = { + { + .code = KEY_POWER, + .gpio = GPIO1_ZIPITZ2_POWER_BUTTON, + .active_low = 0, + .desc = "Power Button", + .wakeup = 1, + .type = EV_KEY, + }, + { + .code = SW_LID, + .gpio = GPIO98_ZIPITZ2_LID_BUTTON, + .active_low = 1, + .desc = "Lid Switch", + .wakeup = 0, + .type = EV_SW, + }, +}; + +static struct gpio_keys_platform_data z2_pxa_keys_data = { + .buttons = z2_pxa_buttons, + .nbuttons = ARRAY_SIZE(z2_pxa_buttons), +}; + +static struct platform_device z2_pxa_keys = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &z2_pxa_keys_data, + }, +}; + +static void __init z2_keys_init(void) +{ + platform_device_register(&z2_pxa_keys); +} +#else +static inline void z2_keys_init(void) {} +#endif + +/****************************************************************************** + * Battery + ******************************************************************************/ +#if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE) +static struct z2_battery_info batt_chip_info = { + .batt_I2C_bus = 0, + .batt_I2C_addr = 0x55, + .batt_I2C_reg = 2, + .charge_gpio = GPIO0_ZIPITZ2_AC_DETECT, + .min_voltage = 3475000, + .max_voltage = 4190000, + .batt_div = 59, + .batt_mult = 1000000, + .batt_tech = POWER_SUPPLY_TECHNOLOGY_LION, + .batt_name = "Z2", +}; + +static struct i2c_board_info __initdata z2_i2c_board_info[] = { + { + I2C_BOARD_INFO("aer915", 0x55), + .platform_data = &batt_chip_info, + }, { + I2C_BOARD_INFO("wm8750", 0x1b), + }, + +}; + +static void __init z2_i2c_init(void) +{ + pxa_set_i2c_info(NULL); + i2c_register_board_info(0, ARRAY_AND_SIZE(z2_i2c_board_info)); +} +#else +static inline void z2_i2c_init(void) {} +#endif + +/****************************************************************************** + * SSP Devices - WiFi and LCD control + ******************************************************************************/ +#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE) +/* WiFi */ +static int z2_lbs_spi_setup(struct spi_device *spi) +{ + int ret = 0; + + ret = gpio_request(GPIO14_ZIPITZ2_WIFI_POWER, "WiFi Power"); + if (ret) + goto err; + + ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_POWER, 1); + if (ret) + goto err2; + + /* Wait until card is powered on */ + mdelay(180); + + spi->bits_per_word = 16; + spi->mode = SPI_MODE_2, + + spi_setup(spi); + + return 0; + +err2: + gpio_free(GPIO14_ZIPITZ2_WIFI_POWER); +err: + return ret; +}; + +static int z2_lbs_spi_teardown(struct spi_device *spi) +{ + gpio_set_value(GPIO14_ZIPITZ2_WIFI_POWER, 0); + gpio_free(GPIO14_ZIPITZ2_WIFI_POWER); + + return 0; +}; + +static struct pxa2xx_spi_chip z2_lbs_chip_info = { + .rx_threshold = 8, + .tx_threshold = 8, + .timeout = 1000, + .gpio_cs = GPIO24_ZIPITZ2_WIFI_CS, +}; + +static struct libertas_spi_platform_data z2_lbs_pdata = { + .use_dummy_writes = 1, + .setup = z2_lbs_spi_setup, + .teardown = z2_lbs_spi_teardown, +}; + +/* LCD */ +static struct pxa2xx_spi_chip lms283_chip_info = { + .rx_threshold = 1, + .tx_threshold = 1, + .timeout = 64, + .gpio_cs = GPIO88_ZIPITZ2_LCD_CS, +}; + +static const struct lms283gf05_pdata lms283_pdata = { + .reset_gpio = GPIO19_ZIPITZ2_LCD_RESET, +}; + +static struct spi_board_info spi_board_info[] __initdata = { +{ + .modalias = "libertas_spi", + .platform_data = &z2_lbs_pdata, + .controller_data = &z2_lbs_chip_info, + .irq = PXA_GPIO_TO_IRQ(GPIO36_ZIPITZ2_WIFI_IRQ), + .max_speed_hz = 13000000, + .bus_num = 1, + .chip_select = 0, +}, +{ + .modalias = "lms283gf05", + .controller_data = &lms283_chip_info, + .platform_data = &lms283_pdata, + .max_speed_hz = 400000, + .bus_num = 2, + .chip_select = 0, +}, +}; + +static struct pxa2xx_spi_controller pxa_ssp1_master_info = { + .num_chipselect = 1, + .enable_dma = 1, +}; + +static struct pxa2xx_spi_controller pxa_ssp2_master_info = { + .num_chipselect = 1, +}; + +static void __init z2_spi_init(void) +{ + pxa2xx_set_spi_info(1, &pxa_ssp1_master_info); + pxa2xx_set_spi_info(2, &pxa_ssp2_master_info); + spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); +} +#else +static inline void z2_spi_init(void) {} +#endif + +/****************************************************************************** + * Core power regulator + ******************************************************************************/ +#if defined(CONFIG_REGULATOR_TPS65023) || \ + defined(CONFIG_REGULATOR_TPS65023_MODULE) +static struct regulator_consumer_supply z2_tps65021_consumers[] = { + REGULATOR_SUPPLY("vcc_core", NULL), +}; + +static struct regulator_init_data z2_tps65021_info[] = { + { + .constraints = { + .name = "vcc_core range", + .min_uV = 800000, + .max_uV = 1600000, + .always_on = 1, + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, + }, + .consumer_supplies = z2_tps65021_consumers, + .num_consumer_supplies = ARRAY_SIZE(z2_tps65021_consumers), + }, { + .constraints = { + .name = "DCDC2", + .min_uV = 3300000, + .max_uV = 3300000, + .always_on = 1, + }, + }, { + .constraints = { + .name = "DCDC3", + .min_uV = 1800000, + .max_uV = 1800000, + .always_on = 1, + }, + }, { + .constraints = { + .name = "LDO1", + .min_uV = 1000000, + .max_uV = 3150000, + .always_on = 1, + }, + }, { + .constraints = { + .name = "LDO2", + .min_uV = 1050000, + .max_uV = 3300000, + .always_on = 1, + }, + } +}; + +static struct i2c_board_info __initdata z2_pi2c_board_info[] = { + { + I2C_BOARD_INFO("tps65021", 0x48), + .platform_data = &z2_tps65021_info, + }, +}; + +static void __init z2_pmic_init(void) +{ + pxa27x_set_i2c_power_info(NULL); + i2c_register_board_info(1, ARRAY_AND_SIZE(z2_pi2c_board_info)); +} +#else +static inline void z2_pmic_init(void) {} +#endif + +#ifdef CONFIG_PM +static void z2_power_off(void) +{ + /* We're using deep sleep as poweroff, so clear PSPR to ensure that + * bootloader will jump to its entry point in resume handler + */ + PSPR = 0x0; + local_irq_disable(); + pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP); + pxa27x_cpu_pm_enter(PM_SUSPEND_MEM); +} +#else +#define z2_power_off NULL +#endif + +/****************************************************************************** + * Machine init + ******************************************************************************/ +static void __init z2_init(void) +{ + pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config)); + + pxa_set_ffuart_info(NULL); + pxa_set_btuart_info(NULL); + pxa_set_stuart_info(NULL); + + z2_lcd_init(); + z2_mmc_init(); + z2_mkp_init(); + z2_i2c_init(); + z2_spi_init(); + z2_nor_init(); + z2_pwm_init(); + z2_leds_init(); + z2_keys_init(); + z2_pmic_init(); + + pm_power_off = z2_power_off; +} + +MACHINE_START(ZIPIT2, "Zipit Z2") + .atag_offset = 0x100, + .map_io = pxa27x_map_io, + .nr_irqs = PXA_NR_IRQS, + .init_irq = pxa27x_init_irq, + .handle_irq = pxa27x_handle_irq, + .init_time = pxa_timer_init, + .init_machine = z2_init, + .restart = pxa_restart, +MACHINE_END |