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linux/arch/arm/mach-pxa/z2.c

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/*
* 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.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.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_keys.h>
#include <linux/delay.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/pxa-i2c.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/pxa27x.h>
#include <mach/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 <mach/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 platform_pwm_backlight_data z2_backlight_data[] = {
[0] = {
/* Keypad Backlight */
.pwm_id = 1,
.max_brightness = 1023,
.dft_brightness = 0,
.pwm_period_ns = 1260320,
.enable_gpio = -1,
},
[1] = {
/* LCD Backlight */
.pwm_id = 2,
.max_brightness = 1023,
.dft_brightness = 512,
.pwm_period_ns = 1260320,
.enable_gpio = -1,
},
};
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)
{
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,
.gpio_card_detect = GPIO96_ZIPITZ2_SD_DETECT,
.gpio_power = -1,
.gpio_card_ro = -1,
.detect_delay_ms = 200,
};
static void __init z2_mmc_init(void)
{
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_master pxa_ssp1_master_info = {
.clock_enable = CKEN_SSP,
.num_chipselect = 1,
.enable_dma = 1,
};
static struct pxa2xx_spi_master pxa_ssp2_master_info = {
.clock_enable = CKEN_SSP2,
.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
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