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palmte2.c

/*
 * Hardware definitions for Palm Tungsten|E2
 *
 * Author:
 *    Carlos Eduardo Medaglia Dyonisio <cadu@nerdfeliz.com>
 *
 * Rewrite for mainline:
 *    Marek Vasut <marek.vasut@gmail.com>
 *
 * 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.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/audio.h>
#include <mach/palmte2.h>
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/mfp-pxa25x.h>
#include <mach/irda.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>

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

/******************************************************************************
 * Pin configuration
 ******************************************************************************/
static unsigned long palmte2_pin_config[] __initdata = {
      /* MMC */
      GPIO6_MMC_CLK,
      GPIO8_MMC_CS0,
      GPIO10_GPIO,      /* SD detect */
      GPIO55_GPIO,      /* SD power */
      GPIO51_GPIO,      /* SD r/o switch */

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

      /* PWM */
      GPIO16_PWM0_OUT,

      /* USB */
      GPIO15_GPIO,      /* usb detect */
      GPIO53_GPIO,      /* usb power */

      /* IrDA */
      GPIO48_GPIO,      /* ir disable */
      GPIO46_FICP_RXD,
      GPIO47_FICP_TXD,

      /* LCD */
      GPIOxx_LCD_TFT_16BPP,

      /* GPIO KEYS */
      GPIO5_GPIO, /* notes */
      GPIO7_GPIO, /* tasks */
      GPIO11_GPIO,      /* calendar */
      GPIO13_GPIO,      /* contacts */
      GPIO14_GPIO,      /* center */
      GPIO19_GPIO,      /* left */
      GPIO20_GPIO,      /* right */
      GPIO21_GPIO,      /* down */
      GPIO22_GPIO,      /* up */

      /* MISC */
      GPIO1_RST,  /* reset */
      GPIO4_GPIO, /* Hotsync button */
      GPIO9_GPIO, /* power detect */
      GPIO15_GPIO,      /* earphone detect */
      GPIO37_GPIO,      /* LCD power */
      GPIO56_GPIO,      /* Backlight power */
};

/******************************************************************************
 * SD/MMC card controller
 ******************************************************************************/
static struct pxamci_platform_data palmte2_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .gpio_card_detect = GPIO_NR_PALMTE2_SD_DETECT_N,
      .gpio_card_ro           = GPIO_NR_PALMTE2_SD_READONLY,
      .gpio_power       = GPIO_NR_PALMTE2_SD_POWER,
};

/******************************************************************************
 * GPIO keys
 ******************************************************************************/
static struct gpio_keys_button palmte2_pxa_buttons[] = {
      {KEY_F1,    GPIO_NR_PALMTE2_KEY_CONTACTS, 1, "Contacts" },
      {KEY_F2,    GPIO_NR_PALMTE2_KEY_CALENDAR, 1, "Calendar" },
      {KEY_F3,    GPIO_NR_PALMTE2_KEY_TASKS,    1, "Tasks" },
      {KEY_F4,    GPIO_NR_PALMTE2_KEY_NOTES,    1, "Notes" },
      {KEY_ENTER, GPIO_NR_PALMTE2_KEY_CENTER,   1, "Center" },
      {KEY_LEFT,  GPIO_NR_PALMTE2_KEY_LEFT,     1, "Left" },
      {KEY_RIGHT, GPIO_NR_PALMTE2_KEY_RIGHT,    1, "Right" },
      {KEY_DOWN,  GPIO_NR_PALMTE2_KEY_DOWN,     1, "Down" },
      {KEY_UP,    GPIO_NR_PALMTE2_KEY_UP,       1, "Up" },
};

static struct gpio_keys_platform_data palmte2_pxa_keys_data = {
      .buttons    = palmte2_pxa_buttons,
      .nbuttons   = ARRAY_SIZE(palmte2_pxa_buttons),
};

static struct platform_device palmte2_pxa_keys = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data = &palmte2_pxa_keys_data,
      },
};

/******************************************************************************
 * Backlight
 ******************************************************************************/
static int palmte2_backlight_init(struct device *dev)
{
      int ret;

      ret = gpio_request(GPIO_NR_PALMTE2_BL_POWER, "BL POWER");
      if (ret)
            goto err;
      ret = gpio_direction_output(GPIO_NR_PALMTE2_BL_POWER, 0);
      if (ret)
            goto err2;
      ret = gpio_request(GPIO_NR_PALMTE2_LCD_POWER, "LCD POWER");
      if (ret)
            goto err2;
      ret = gpio_direction_output(GPIO_NR_PALMTE2_LCD_POWER, 0);
      if (ret)
            goto err3;

      return 0;
err3:
      gpio_free(GPIO_NR_PALMTE2_LCD_POWER);
err2:
      gpio_free(GPIO_NR_PALMTE2_BL_POWER);
err:
      return ret;
}

static int palmte2_backlight_notify(struct device *dev, int brightness)
{
      gpio_set_value(GPIO_NR_PALMTE2_BL_POWER, brightness);
      gpio_set_value(GPIO_NR_PALMTE2_LCD_POWER, brightness);
      return brightness;
}

static void palmte2_backlight_exit(struct device *dev)
{
      gpio_free(GPIO_NR_PALMTE2_BL_POWER);
      gpio_free(GPIO_NR_PALMTE2_LCD_POWER);
}

static struct platform_pwm_backlight_data palmte2_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = PALMTE2_MAX_INTENSITY,
      .dft_brightness   = PALMTE2_MAX_INTENSITY,
      .pwm_period_ns    = PALMTE2_PERIOD_NS,
      .init       = palmte2_backlight_init,
      .notify           = palmte2_backlight_notify,
      .exit       = palmte2_backlight_exit,
};

static struct platform_device palmte2_backlight = {
      .name = "pwm-backlight",
      .dev  = {
            .parent           = &pxa25x_device_pwm0.dev,
            .platform_data    = &palmte2_backlight_data,
      },
};

/******************************************************************************
 * IrDA
 ******************************************************************************/
static struct pxaficp_platform_data palmte2_ficp_platform_data = {
      .gpio_pwdown            = GPIO_NR_PALMTE2_IR_DISABLE,
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
};

/******************************************************************************
 * UDC
 ******************************************************************************/
static struct gpio_vbus_mach_info palmte2_udc_info = {
      .gpio_vbus        = GPIO_NR_PALMTE2_USB_DETECT_N,
      .gpio_vbus_inverted     = 1,
      .gpio_pullup            = GPIO_NR_PALMTE2_USB_PULLUP,
};

static struct platform_device palmte2_gpio_vbus = {
      .name = "gpio-vbus",
      .id   = -1,
      .dev  = {
            .platform_data    = &palmte2_udc_info,
      },
};

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

      ret = gpio_request(GPIO_NR_PALMTE2_POWER_DETECT, "CABLE_STATE_AC");
      if (ret)
            goto err1;
      ret = gpio_direction_input(GPIO_NR_PALMTE2_POWER_DETECT);
      if (ret)
            goto err2;

      return 0;

err2:
      gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
err1:
      return ret;
}

static int palmte2_is_ac_online(void)
{
      return gpio_get_value(GPIO_NR_PALMTE2_POWER_DETECT);
}

static void power_supply_exit(struct device *dev)
{
      gpio_free(GPIO_NR_PALMTE2_POWER_DETECT);
}

static char *palmte2_supplicants[] = {
      "main-battery",
};

static struct pda_power_pdata power_supply_info = {
      .init            = power_supply_init,
      .is_ac_online    = palmte2_is_ac_online,
      .exit            = power_supply_exit,
      .supplied_to     = palmte2_supplicants,
      .num_supplicants = ARRAY_SIZE(palmte2_supplicants),
};

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

/******************************************************************************
 * WM97xx audio, battery
 ******************************************************************************/
static struct wm97xx_batt_pdata palmte2_batt_pdata = {
      .batt_aux   = WM97XX_AUX_ID3,
      .temp_aux   = WM97XX_AUX_ID2,
      .charge_gpio      = -1,
      .max_voltage      = PALMTE2_BAT_MAX_VOLTAGE,
      .min_voltage      = PALMTE2_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",
};

static struct wm97xx_pdata palmte2_wm97xx_pdata = {
      .batt_pdata = &palmte2_batt_pdata,
};

static pxa2xx_audio_ops_t palmte2_ac97_pdata = {
      .codec_pdata      = { &palmte2_wm97xx_pdata, },
};

static struct palm27x_asoc_info palmte2_asoc_pdata = {
      .jack_gpio  = GPIO_NR_PALMTE2_EARPHONE_DETECT,
};

static struct platform_device palmte2_asoc = {
      .name = "palm27x-asoc",
      .id   = -1,
      .dev  = {
            .platform_data = &palmte2_asoc_pdata,
      },
};

/******************************************************************************
 * Framebuffer
 ******************************************************************************/
static struct pxafb_mode_info palmte2_lcd_modes[] = {
{
      .pixclock   = 77757,
      .xres       = 320,
      .yres       = 320,
      .bpp        = 16,

      .left_margin      = 28,
      .right_margin     = 7,
      .upper_margin     = 7,
      .lower_margin     = 5,

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

static struct pxafb_mach_info palmte2_lcd_screen = {
      .modes            = palmte2_lcd_modes,
      .num_modes  = ARRAY_SIZE(palmte2_lcd_modes),
      .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

/******************************************************************************
 * Machine init
 ******************************************************************************/
static struct platform_device *devices[] __initdata = {
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
      &palmte2_pxa_keys,
#endif
      &palmte2_backlight,
      &power_supply,
      &palmte2_asoc,
      &palmte2_gpio_vbus,
};

/* setup udc GPIOs initial state */
static void __init palmte2_udc_init(void)
{
      if (!gpio_request(GPIO_NR_PALMTE2_USB_PULLUP, "UDC Vbus")) {
            gpio_direction_output(GPIO_NR_PALMTE2_USB_PULLUP, 1);
            gpio_free(GPIO_NR_PALMTE2_USB_PULLUP);
      }
}

static void __init palmte2_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(palmte2_pin_config));

      pxa_set_ffuart_info(NULL);
      pxa_set_btuart_info(NULL);
      pxa_set_stuart_info(NULL);

      set_pxa_fb_info(&palmte2_lcd_screen);
      pxa_set_mci_info(&palmte2_mci_platform_data);
      palmte2_udc_init();
      pxa_set_ac97_info(&palmte2_ac97_pdata);
      pxa_set_ficp_info(&palmte2_ficp_platform_data);

      platform_add_devices(devices, ARRAY_SIZE(devices));
}

MACHINE_START(PALMTE2, "Palm Tungsten|E2")
      .boot_params      = 0xa0000100,
      .map_io           = pxa25x_map_io,
      .init_irq   = pxa25x_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = palmte2_init
MACHINE_END

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