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palmz72.c

/*
 * Hardware definitions for Palm Zire72
 *
 * Authors:
 *    Vladimir "Farcaller" Pouzanov <farcaller@gmail.com>
 *    Sergey Lapin <slapin@ossfans.org>
 *    Alex Osborne <bobofdoom@gmail.com>
 *    Jan Herman <2hp@seznam.cz>
 *
 * 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/sysdev.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/pxa27x.h>
#include <mach/audio.h>
#include <mach/palmz72.h>
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/irda.h>
#include <plat/pxa27x_keypad.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>
#include <mach/palm27x.h>

#include <mach/pm.h>

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

/******************************************************************************
 * Pin configuration
 ******************************************************************************/
static unsigned long palmz72_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 */
      GPIO115_GPIO,     /* SD RO */
      GPIO98_GPIO,      /* SD power */

      /* AC97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO89_AC97_SYSCLK,
      GPIO113_AC97_nRESET,

      /* IrDA */
      GPIO49_GPIO,      /* ir disable */
      GPIO46_FICP_RXD,
      GPIO47_FICP_TXD,

      /* PWM */
      GPIO16_PWM0_OUT,

      /* USB */
      GPIO15_GPIO,      /* usb detect */
      GPIO95_GPIO,      /* usb pullup */

      /* 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 */
      GPIOxx_LCD_TFT_16BPP,

      GPIO20_GPIO,      /* bl power */
      GPIO21_GPIO,      /* LCD border switch */
      GPIO22_GPIO,      /* LCD border color */
      GPIO96_GPIO,      /* lcd power */

      /* Misc. */
      GPIO0_GPIO  | WAKEUP_ON_LEVEL_HIGH, /* power detect */
      GPIO88_GPIO,                        /* green led */
      GPIO27_GPIO,                        /* WM9712 IRQ */
};

/******************************************************************************
 * GPIO keyboard
 ******************************************************************************/
#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int palmz72_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 palmz72_keypad_platform_data = {
      .matrix_key_rows  = 4,
      .matrix_key_cols  = 3,
      .matrix_key_map         = palmz72_matrix_keys,
      .matrix_key_map_size    = ARRAY_SIZE(palmz72_matrix_keys),

      .debounce_interval      = 30,
};

static void __init palmz72_kpc_init(void)
{
      pxa_set_keypad_info(&palmz72_keypad_platform_data);
}
#else
static inline void palmz72_kpc_init(void) {}
#endif

/******************************************************************************
 * LEDs
 ******************************************************************************/
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led gpio_leds[] = {
      {
            .name             = "palmz72:green:led",
            .default_trigger  = "none",
            .gpio             = GPIO_NR_PALMZ72_LED_GREEN,
      },
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds       = gpio_leds,
      .num_leds   = ARRAY_SIZE(gpio_leds),
};

static struct platform_device palmz72_leds = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &gpio_led_info,
      }
};

static void __init palmz72_leds_init(void)
{
      platform_device_register(&palmz72_leds);
}
#else
static inline void palmz72_leds_init(void) {}
#endif

#ifdef CONFIG_PM

/* We have some black magic here
 * PalmOS ROM on recover expects special struct physical address
 * to be transferred via PSPR. Using this struct PalmOS restores
 * its state after sleep. As for Linux, we need to setup it the
 * same way. More than that, PalmOS ROM changes some values in memory.
 * For now only one location is found, which needs special treatment.
 * Thanks to Alex Osborne, Andrzej Zaborowski, and lots of other people
 * for reading backtraces for me :)
 */

#define PALMZ72_SAVE_DWORD ((unsigned long *)0xc0000050)

static struct palmz72_resume_info palmz72_resume_info = {
      .magic0 = 0xb4e6,
      .magic1 = 1,

      /* reset state, MMU off etc */
      .arm_control = 0,
      .aux_control = 0,
      .ttb = 0,
      .domain_access = 0,
      .process_id = 0,
};

static unsigned long store_ptr;

/* sys_device for Palm Zire 72 PM */

static int palmz72_pm_suspend(struct sys_device *dev, pm_message_t msg)
{
      /* setup the resume_info struct for the original bootloader */
      palmz72_resume_info.resume_addr = (u32) pxa_cpu_resume;

      /* Storing memory touched by ROM */
      store_ptr = *PALMZ72_SAVE_DWORD;

      /* Setting PSPR to a proper value */
      PSPR = virt_to_phys(&palmz72_resume_info);

      return 0;
}

static int palmz72_pm_resume(struct sys_device *dev)
{
      *PALMZ72_SAVE_DWORD = store_ptr;
      return 0;
}

static struct sysdev_class palmz72_pm_sysclass = {
      .name = "palmz72_pm",
      .suspend = palmz72_pm_suspend,
      .resume = palmz72_pm_resume,
};

static struct sys_device palmz72_pm_device = {
      .cls = &palmz72_pm_sysclass,
};

static int __init palmz72_pm_init(void)
{
      int ret = -ENODEV;
      if (machine_is_palmz72()) {
            ret = sysdev_class_register(&palmz72_pm_sysclass);
            if (ret == 0)
                  ret = sysdev_register(&palmz72_pm_device);
      }
      return ret;
}

device_initcall(palmz72_pm_init);
#endif

/******************************************************************************
 * Machine init
 ******************************************************************************/
static void __init palmz72_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(palmz72_pin_config));
      pxa_set_ffuart_info(NULL);
      pxa_set_btuart_info(NULL);
      pxa_set_stuart_info(NULL);

      palm27x_mmc_init(GPIO_NR_PALMZ72_SD_DETECT_N, GPIO_NR_PALMZ72_SD_RO,
                  GPIO_NR_PALMZ72_SD_POWER_N, 1);
      palm27x_lcd_init(-1, &palm_320x320_lcd_mode);
      palm27x_udc_init(GPIO_NR_PALMZ72_USB_DETECT_N,
                  GPIO_NR_PALMZ72_USB_PULLUP, 0);
      palm27x_irda_init(GPIO_NR_PALMZ72_IR_DISABLE);
      palm27x_ac97_init(PALMZ72_BAT_MIN_VOLTAGE, PALMZ72_BAT_MAX_VOLTAGE,
                  -1, 113);
      palm27x_pwm_init(-1, -1);
      palm27x_power_init(-1, -1);
      palm27x_pmic_init();
      palmz72_kpc_init();
      palmz72_leds_init();
}

MACHINE_START(PALMZ72, "Palm Zire72")
      .boot_params      = 0xa0000100,
      .map_io           = pxa27x_map_io,
      .init_irq   = pxa27x_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = palmz72_init
MACHINE_END

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