/*
 * 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