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palmt5.c

/*
 * Hardware definitions for Palm Tungsten|T5
 *
 * Author:  Marek Vasut <marek.vasut@gmail.com>
 *
 * Based on work of:
 *          Ales Snuparek <snuparek@atlas.cz>
 *          Justin Kendrick <twilightsentry@gmail.com>
 *          RichardT5 <richard_t5@users.sourceforge.net>
 *
 * 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.
 *
 * (find more info at www.hackndev.com)
 *
 */

#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/pda_power.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
#include <linux/wm97xx_batt.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <mach/pxa27x.h>
#include <mach/audio.h>
#include <mach/palmt5.h>
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/irda.h>
#include <mach/pxa27x_keypad.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>

#include "generic.h"
#include "devices.h"

/******************************************************************************
 * Pin configuration
 ******************************************************************************/
static unsigned long palmt5_pin_config[] __initdata = {
      /* MMC */
      GPIO32_MMC_CLK,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,
      GPIO112_MMC_CMD,
      GPIO14_GPIO,      /* SD detect */
      GPIO114_GPIO,     /* SD power */
      GPIO115_GPIO,     /* SD r/o switch */

      /* AC97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO89_AC97_SYSCLK,
      GPIO95_AC97_nRESET,

      /* IrDA */
      GPIO40_GPIO,      /* ir disable */
      GPIO46_FICP_RXD,
      GPIO47_FICP_TXD,

      /* USB */
      GPIO15_GPIO,      /* usb detect */
      GPIO93_GPIO,      /* usb power */

      /* MATRIX KEYPAD */
      GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
      GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
      GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
      GPIO97_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
      GPIO103_KP_MKOUT_0,
      GPIO104_KP_MKOUT_1,
      GPIO105_KP_MKOUT_2,

      /* LCD */
      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,

      /* PWM */
      GPIO16_PWM0_OUT,

      /* FFUART */
      GPIO34_FFUART_RXD,
      GPIO39_FFUART_TXD,

      /* MISC */
      GPIO10_GPIO,      /* hotsync button */
      GPIO90_GPIO,      /* power detect */
      GPIO107_GPIO,     /* earphone detect */
};

/******************************************************************************
 * SD/MMC card controller
 ******************************************************************************/
static struct pxamci_platform_data palmt5_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .gpio_card_detect = GPIO_NR_PALMT5_SD_DETECT_N,
      .gpio_card_ro           = GPIO_NR_PALMT5_SD_READONLY,
      .gpio_power       = GPIO_NR_PALMT5_SD_POWER,
      .detect_delay           = 20,
};

/******************************************************************************
 * GPIO keyboard
 ******************************************************************************/
static unsigned int palmt5_matrix_keys[] = {
      KEY(0, 0, KEY_POWER),
      KEY(0, 1, KEY_F1),
      KEY(0, 2, KEY_ENTER),

      KEY(1, 0, KEY_F2),
      KEY(1, 1, KEY_F3),
      KEY(1, 2, KEY_F4),

      KEY(2, 0, KEY_UP),
      KEY(2, 2, KEY_DOWN),

      KEY(3, 0, KEY_RIGHT),
      KEY(3, 2, KEY_LEFT),
};

static struct pxa27x_keypad_platform_data palmt5_keypad_platform_data = {
      .matrix_key_rows  = 4,
      .matrix_key_cols  = 3,
      .matrix_key_map         = palmt5_matrix_keys,
      .matrix_key_map_size    = ARRAY_SIZE(palmt5_matrix_keys),

      .debounce_interval      = 30,
};

/******************************************************************************
 * GPIO keys
 ******************************************************************************/
static struct gpio_keys_button palmt5_pxa_buttons[] = {
      {KEY_F8, GPIO_NR_PALMT5_HOTSYNC_BUTTON_N, 1, "HotSync Button" },
};

static struct gpio_keys_platform_data palmt5_pxa_keys_data = {
      .buttons    = palmt5_pxa_buttons,
      .nbuttons   = ARRAY_SIZE(palmt5_pxa_buttons),
};

static struct platform_device palmt5_pxa_keys = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data = &palmt5_pxa_keys_data,
      },
};

/******************************************************************************
 * Backlight
 ******************************************************************************/
static int palmt5_backlight_init(struct device *dev)
{
      int ret;

      ret = gpio_request(GPIO_NR_PALMT5_BL_POWER, "BL POWER");
      if (ret)
            goto err;
      ret = gpio_direction_output(GPIO_NR_PALMT5_BL_POWER, 0);
      if (ret)
            goto err2;
      ret = gpio_request(GPIO_NR_PALMT5_LCD_POWER, "LCD POWER");
      if (ret)
            goto err2;
      ret = gpio_direction_output(GPIO_NR_PALMT5_LCD_POWER, 0);
      if (ret)
            goto err3;

      return 0;
err3:
      gpio_free(GPIO_NR_PALMT5_LCD_POWER);
err2:
      gpio_free(GPIO_NR_PALMT5_BL_POWER);
err:
      return ret;
}

static int palmt5_backlight_notify(int brightness)
{
      gpio_set_value(GPIO_NR_PALMT5_BL_POWER, brightness);
      gpio_set_value(GPIO_NR_PALMT5_LCD_POWER, brightness);
      return brightness;
}

static void palmt5_backlight_exit(struct device *dev)
{
      gpio_free(GPIO_NR_PALMT5_BL_POWER);
      gpio_free(GPIO_NR_PALMT5_LCD_POWER);
}

static struct platform_pwm_backlight_data palmt5_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = PALMT5_MAX_INTENSITY,
      .dft_brightness   = PALMT5_MAX_INTENSITY,
      .pwm_period_ns    = PALMT5_PERIOD_NS,
      .init       = palmt5_backlight_init,
      .notify           = palmt5_backlight_notify,
      .exit       = palmt5_backlight_exit,
};

static struct platform_device palmt5_backlight = {
      .name = "pwm-backlight",
      .dev  = {
            .parent           = &pxa27x_device_pwm0.dev,
            .platform_data    = &palmt5_backlight_data,
      },
};

/******************************************************************************
 * IrDA
 ******************************************************************************/
static struct pxaficp_platform_data palmt5_ficp_platform_data = {
      .gpio_pwdown            = GPIO_NR_PALMT5_IR_DISABLE,
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
};

/******************************************************************************
 * UDC
 ******************************************************************************/
static struct gpio_vbus_mach_info palmt5_udc_info = {
      .gpio_vbus        = GPIO_NR_PALMT5_USB_DETECT_N,
      .gpio_vbus_inverted     = 1,
      .gpio_pullup            = GPIO_NR_PALMT5_USB_PULLUP,
};

static struct platform_device palmt5_gpio_vbus = {
      .name = "gpio-vbus",
      .id   = -1,
      .dev  = {
            .platform_data    = &palmt5_udc_info,
      },
};

/******************************************************************************
 * Power supply
 ******************************************************************************/
static int power_supply_init(struct device *dev)
{
      int ret;

      ret = gpio_request(GPIO_NR_PALMT5_POWER_DETECT, "CABLE_STATE_AC");
      if (ret)
            goto err1;
      ret = gpio_direction_input(GPIO_NR_PALMT5_POWER_DETECT);
      if (ret)
            goto err2;

      return 0;
err2:
      gpio_free(GPIO_NR_PALMT5_POWER_DETECT);
err1:
      return ret;
}

static int palmt5_is_ac_online(void)
{
      return gpio_get_value(GPIO_NR_PALMT5_POWER_DETECT);
}

static void power_supply_exit(struct device *dev)
{
      gpio_free(GPIO_NR_PALMT5_POWER_DETECT);
}

static char *palmt5_supplicants[] = {
      "main-battery",
};

static struct pda_power_pdata power_supply_info = {
      .init            = power_supply_init,
      .is_ac_online    = palmt5_is_ac_online,
      .exit            = power_supply_exit,
      .supplied_to     = palmt5_supplicants,
      .num_supplicants = ARRAY_SIZE(palmt5_supplicants),
};

static struct platform_device power_supply = {
      .name = "pda-power",
      .id   = -1,
      .dev  = {
            .platform_data = &power_supply_info,
      },
};

/******************************************************************************
 * WM97xx battery
 ******************************************************************************/
static struct wm97xx_batt_info wm97xx_batt_pdata = {
      .batt_aux   = WM97XX_AUX_ID3,
      .temp_aux   = WM97XX_AUX_ID2,
      .charge_gpio      = -1,
      .max_voltage      = PALMT5_BAT_MAX_VOLTAGE,
      .min_voltage      = PALMT5_BAT_MIN_VOLTAGE,
      .batt_mult  = 1000,
      .batt_div   = 414,
      .temp_mult  = 1,
      .temp_div   = 1,
      .batt_tech  = POWER_SUPPLY_TECHNOLOGY_LIPO,
      .batt_name  = "main-batt",
};

/******************************************************************************
 * aSoC audio
 ******************************************************************************/
static struct palm27x_asoc_info palmt5_asoc_pdata = {
      .jack_gpio  = GPIO_NR_PALMT5_EARPHONE_DETECT,
};

static pxa2xx_audio_ops_t palmt5_ac97_pdata = {
      .reset_gpio = 95,
};

static struct platform_device palmt5_asoc = {
      .name = "palm27x-asoc",
      .id   = -1,
      .dev  = {
            .platform_data = &palmt5_asoc_pdata,
      },
};

/******************************************************************************
 * Framebuffer
 ******************************************************************************/
static struct pxafb_mode_info palmt5_lcd_modes[] = {
{
      .pixclock   = 57692,
      .xres       = 320,
      .yres       = 480,
      .bpp        = 16,

      .left_margin      = 32,
      .right_margin     = 1,
      .upper_margin     = 7,
      .lower_margin     = 1,

      .hsync_len  = 4,
      .vsync_len  = 1,
},
};

static struct pxafb_mach_info palmt5_lcd_screen = {
      .modes            = palmt5_lcd_modes,
      .num_modes  = ARRAY_SIZE(palmt5_lcd_modes),
      .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

/******************************************************************************
 * Power management - standby
 ******************************************************************************/
static void __init palmt5_pm_init(void)
{
      static u32 resume[] = {
            0xe3a00101, /* mov      r0,   #0x40000000 */
            0xe380060f, /* orr      r0, r0, #0x00f00000 */
            0xe590f008, /* ldr      pc, [r0, #0x08] */
      };

      /* copy the bootloader */
      memcpy(phys_to_virt(PALMT5_STR_BASE), resume, sizeof(resume));
}

/******************************************************************************
 * Machine init
 ******************************************************************************/
static struct platform_device *devices[] __initdata = {
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
      &palmt5_pxa_keys,
#endif
      &palmt5_backlight,
      &power_supply,
      &palmt5_asoc,
      &palmt5_gpio_vbus,
};

/* setup udc GPIOs initial state */
static void __init palmt5_udc_init(void)
{
      if (!gpio_request(GPIO_NR_PALMT5_USB_PULLUP, "UDC Vbus")) {
            gpio_direction_output(GPIO_NR_PALMT5_USB_PULLUP, 1);
            gpio_free(GPIO_NR_PALMT5_USB_PULLUP);
      }
}

static void __init palmt5_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(palmt5_pin_config));

      palmt5_pm_init();
      set_pxa_fb_info(&palmt5_lcd_screen);
      pxa_set_mci_info(&palmt5_mci_platform_data);
      palmt5_udc_init();
      pxa_set_ac97_info(&palmt5_ac97_pdata);
      pxa_set_ficp_info(&palmt5_ficp_platform_data);
      pxa_set_keypad_info(&palmt5_keypad_platform_data);
      wm97xx_bat_set_pdata(&wm97xx_batt_pdata);

      platform_add_devices(devices, ARRAY_SIZE(devices));
}

MACHINE_START(PALMT5, "Palm Tungsten|T5")
      .phys_io    = PALMT5_PHYS_IO_START,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .boot_params      = 0xa0000100,
      .map_io           = pxa_map_io,
      .init_irq   = pxa27x_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = palmt5_init
MACHINE_END

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