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palm27x.c

/*
 * Common code for Palm LD, T5, TX, Z72
 *
 * Copyright (C) 2010
 * 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.
 *
 */

#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 <linux/regulator/max1586.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/mmc.h>
#include <mach/pxafb.h>
#include <mach/irda.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>
#include <mach/palm27x.h>

#include <plat/i2c.h>

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

/******************************************************************************
 * SD/MMC card controller
 ******************************************************************************/
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static struct pxamci_platform_data palm27x_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .detect_delay_ms  = 200,
};

void __init palm27x_mmc_init(int detect, int ro, int power,
                              int power_inverted)
{
      palm27x_mci_platform_data.gpio_card_detect      = detect;
      palm27x_mci_platform_data.gpio_card_ro          = ro;
      palm27x_mci_platform_data.gpio_power            = power;
      palm27x_mci_platform_data.gpio_power_invert     = power_inverted;

      pxa_set_mci_info(&palm27x_mci_platform_data);
}
#endif

/******************************************************************************
 * Power management - standby
 ******************************************************************************/
#if defined(CONFIG_SUSPEND)
void __init palm27x_pm_init(unsigned long str_base)
{
      static const unsigned long resume[] = {
            0xe3a00101, /* mov      r0,   #0x40000000 */
            0xe380060f, /* orr      r0, r0, #0x00f00000 */
            0xe590f008, /* ldr      pc, [r0, #0x08] */
      };

      /*
       * Copy the bootloader.
       * NOTE: PalmZ72 uses a different wakeup method!
       */
      memcpy(phys_to_virt(str_base), resume, sizeof(resume));
}
#endif

/******************************************************************************
 * Framebuffer
 ******************************************************************************/
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
struct pxafb_mode_info palm_320x480_lcd_mode = {
      .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,
};

struct pxafb_mode_info palm_320x320_lcd_mode = {
      .pixclock   = 115384,
      .xres       = 320,
      .yres       = 320,
      .bpp        = 16,

      .left_margin      = 27,
      .right_margin     = 7,
      .upper_margin     = 7,
      .lower_margin     = 8,

      .hsync_len  = 6,
      .vsync_len  = 1,
};

struct pxafb_mode_info palm_320x320_new_lcd_mode = {
      .pixclock   = 86538,
      .xres       = 320,
      .yres       = 320,
      .bpp        = 16,

      .left_margin      = 20,
      .right_margin     = 8,
      .upper_margin     = 8,
      .lower_margin     = 5,

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

static struct pxafb_mach_info palm27x_lcd_screen = {
      .num_modes  = 1,
      .lcd_conn   = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

static int palm27x_lcd_power;
static void palm27x_lcd_ctl(int on, struct fb_var_screeninfo *info)
{
      gpio_set_value(palm27x_lcd_power, on);
}

void __init palm27x_lcd_init(int power, struct pxafb_mode_info *mode)
{
      palm27x_lcd_screen.modes = mode;

      if (gpio_is_valid(power)) {
            if (!gpio_request(power, "LCD power")) {
                  pr_err("Palm27x: failed to claim lcd power gpio!\n");
                  return;
            }
            if (!gpio_direction_output(power, 1)) {
                  pr_err("Palm27x: lcd power configuration failed!\n");
                  return;
            }
            palm27x_lcd_power = power;
            palm27x_lcd_screen.pxafb_lcd_power = palm27x_lcd_ctl;
      }

      set_pxa_fb_info(&palm27x_lcd_screen);
}
#endif

/******************************************************************************
 * USB Gadget
 ******************************************************************************/
#if   defined(CONFIG_USB_GADGET_PXA27X) || \
      defined(CONFIG_USB_GADGET_PXA27X_MODULE)
static struct gpio_vbus_mach_info palm27x_udc_info = {
      .gpio_vbus_inverted     = 1,
};

static struct platform_device palm27x_gpio_vbus = {
      .name = "gpio-vbus",
      .id   = -1,
      .dev  = {
            .platform_data    = &palm27x_udc_info,
      },
};

void __init palm27x_udc_init(int vbus, int pullup, int vbus_inverted)
{
      palm27x_udc_info.gpio_vbus    = vbus;
      palm27x_udc_info.gpio_pullup  = pullup;

      palm27x_udc_info.gpio_vbus_inverted = vbus_inverted;

      if (!gpio_request(pullup, "USB Pullup")) {
            gpio_direction_output(pullup,
                  palm27x_udc_info.gpio_vbus_inverted);
            gpio_free(pullup);
      } else
            return;

      platform_device_register(&palm27x_gpio_vbus);
}
#endif

/******************************************************************************
 * IrDA
 ******************************************************************************/
#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
static struct pxaficp_platform_data palm27x_ficp_platform_data = {
      .transceiver_cap  = IR_SIRMODE | IR_OFF,
};

void __init palm27x_irda_init(int pwdn)
{
      palm27x_ficp_platform_data.gpio_pwdown = pwdn;
      pxa_set_ficp_info(&palm27x_ficp_platform_data);
}
#endif

/******************************************************************************
 * WM97xx audio, battery
 ******************************************************************************/
#if   defined(CONFIG_TOUCHSCREEN_WM97XX) || \
      defined(CONFIG_TOUCHSCREEN_WM97XX_MODULE)
static struct wm97xx_batt_pdata palm27x_batt_pdata = {
      .batt_aux   = WM97XX_AUX_ID3,
      .temp_aux   = WM97XX_AUX_ID2,
      .charge_gpio      = -1,
      .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 palm27x_wm97xx_pdata = {
      .batt_pdata = &palm27x_batt_pdata,
};

static pxa2xx_audio_ops_t palm27x_ac97_pdata = {
      .codec_pdata      = { &palm27x_wm97xx_pdata, },
};

static struct palm27x_asoc_info palm27x_asoc_pdata = {
      .jack_gpio  = -1,
};

static struct platform_device palm27x_asoc = {
      .name = "palm27x-asoc",
      .id   = -1,
      .dev  = {
            .platform_data = &palm27x_asoc_pdata,
      },
};

void __init palm27x_ac97_init(int minv, int maxv, int jack, int reset)
{
      palm27x_ac97_pdata.reset_gpio = reset;
      palm27x_asoc_pdata.jack_gpio  = jack;

      if (minv < 0 || maxv < 0) {
            palm27x_ac97_pdata.codec_pdata[0] = NULL;
            pxa_set_ac97_info(&palm27x_ac97_pdata);
      } else {
            palm27x_batt_pdata.min_voltage      = minv,
            palm27x_batt_pdata.max_voltage      = maxv,

            pxa_set_ac97_info(&palm27x_ac97_pdata);
            platform_device_register(&palm27x_asoc);
      }
}
#endif

/******************************************************************************
 * Backlight
 ******************************************************************************/
#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
static int palm_bl_power;
static int palm_lcd_power;

static int palm27x_backlight_init(struct device *dev)
{
      int ret;

      ret = gpio_request(palm_bl_power, "BL POWER");
      if (ret)
            goto err;
      ret = gpio_direction_output(palm_bl_power, 0);
      if (ret)
            goto err2;

      if (gpio_is_valid(palm_lcd_power)) {
            ret = gpio_request(palm_lcd_power, "LCD POWER");
            if (ret)
                  goto err2;
            ret = gpio_direction_output(palm_lcd_power, 0);
            if (ret)
                  goto err3;
      }

      return 0;
err3:
      gpio_free(palm_lcd_power);
err2:
      gpio_free(palm_bl_power);
err:
      return ret;
}

static int palm27x_backlight_notify(struct device *dev, int brightness)
{
      gpio_set_value(palm_bl_power, brightness);
      if (gpio_is_valid(palm_lcd_power))
            gpio_set_value(palm_lcd_power, brightness);
      return brightness;
}

static void palm27x_backlight_exit(struct device *dev)
{
      gpio_free(palm_bl_power);
      if (gpio_is_valid(palm_lcd_power))
            gpio_free(palm_lcd_power);
}

static struct platform_pwm_backlight_data palm27x_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = 0xfe,
      .dft_brightness   = 0x7e,
      .pwm_period_ns    = 3500,
      .init       = palm27x_backlight_init,
      .notify           = palm27x_backlight_notify,
      .exit       = palm27x_backlight_exit,
};

static struct platform_device palm27x_backlight = {
      .name = "pwm-backlight",
      .dev  = {
            .parent           = &pxa27x_device_pwm0.dev,
            .platform_data    = &palm27x_backlight_data,
      },
};

void __init palm27x_pwm_init(int bl, int lcd)
{
      palm_bl_power     = bl;
      palm_lcd_power    = lcd;
      platform_device_register(&palm27x_backlight);
}
#endif

/******************************************************************************
 * Power supply
 ******************************************************************************/
#if defined(CONFIG_PDA_POWER) || defined(CONFIG_PDA_POWER_MODULE)
static int palm_ac_state;
static int palm_usb_state;

static int palm27x_power_supply_init(struct device *dev)
{
      int ret;

      ret = gpio_request(palm_ac_state, "AC state");
      if (ret)
            goto err1;
      ret = gpio_direction_input(palm_ac_state);
      if (ret)
            goto err2;

      if (gpio_is_valid(palm_usb_state)) {
            ret = gpio_request(palm_usb_state, "USB state");
            if (ret)
                  goto err2;
            ret = gpio_direction_input(palm_usb_state);
            if (ret)
                  goto err3;
      }

      return 0;
err3:
      gpio_free(palm_usb_state);
err2:
      gpio_free(palm_ac_state);
err1:
      return ret;
}

static void palm27x_power_supply_exit(struct device *dev)
{
      gpio_free(palm_usb_state);
      gpio_free(palm_ac_state);
}

static int palm27x_is_ac_online(void)
{
      return gpio_get_value(palm_ac_state);
}

static int palm27x_is_usb_online(void)
{
      return !gpio_get_value(palm_usb_state);
}
static char *palm27x_supplicants[] = {
      "main-battery",
};

static struct pda_power_pdata palm27x_ps_info = {
      .init             = palm27x_power_supply_init,
      .exit             = palm27x_power_supply_exit,
      .is_ac_online           = palm27x_is_ac_online,
      .is_usb_online          = palm27x_is_usb_online,
      .supplied_to            = palm27x_supplicants,
      .num_supplicants  = ARRAY_SIZE(palm27x_supplicants),
};

static struct platform_device palm27x_power_supply = {
      .name = "pda-power",
      .id   = -1,
      .dev  = {
            .platform_data = &palm27x_ps_info,
      },
};

void __init palm27x_power_init(int ac, int usb)
{
      palm_ac_state     = ac;
      palm_usb_state    = usb;
      platform_device_register(&palm27x_power_supply);
}
#endif

/******************************************************************************
 * Core power regulator
 ******************************************************************************/
#if defined(CONFIG_REGULATOR_MAX1586) || \
    defined(CONFIG_REGULATOR_MAX1586_MODULE)
static struct regulator_consumer_supply palm27x_max1587a_consumers[] = {
      {
            .supply     = "vcc_core",
      }
};

static struct regulator_init_data palm27x_max1587a_v3_info = {
      .constraints = {
            .name       = "vcc_core range",
            .min_uV           = 900000,
            .max_uV           = 1705000,
            .always_on  = 1,
            .valid_ops_mask   = REGULATOR_CHANGE_VOLTAGE,
      },
      .consumer_supplies      = palm27x_max1587a_consumers,
      .num_consumer_supplies  = ARRAY_SIZE(palm27x_max1587a_consumers),
};

static struct max1586_subdev_data palm27x_max1587a_subdevs[] = {
      {
            .name       = "vcc_core",
            .id         = MAX1586_V3,
            .platform_data    = &palm27x_max1587a_v3_info,
      }
};

static struct max1586_platform_data palm27x_max1587a_info = {
      .subdevs     = palm27x_max1587a_subdevs,
      .num_subdevs = ARRAY_SIZE(palm27x_max1587a_subdevs),
      .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
};

static struct i2c_board_info __initdata palm27x_pi2c_board_info[] = {
      {
            I2C_BOARD_INFO("max1586", 0x14),
            .platform_data    = &palm27x_max1587a_info,
      },
};

static struct i2c_pxa_platform_data palm27x_i2c_power_info = {
      .use_pio    = 1,
};

void __init palm27x_pmic_init(void)
{
      i2c_register_board_info(1, ARRAY_AND_SIZE(palm27x_pi2c_board_info));
      pxa27x_set_i2c_power_info(&palm27x_i2c_power_info);
}
#endif

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