palmz72.c

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/*
 * Hardware definitions for Palm Zire72
 *
 * Authors:
 *  Vladimir "Farcaller" Pouzanov <[email protected]>
 *  Sergey Lapin <[email protected]>
 *  Alex Osborne <[email protected]>
 *  Jan Herman <[email protected]>
 *
 * Rewrite for mainline:
 *  Marek Vasut <[email protected]>
 *
 * 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/syscore_ops.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/i2c-gpio.h>

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

#include <mach/pxa27x.h>
#include <mach/audio.h>
#include <mach/palmz72.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/keypad-pxa27x.h>
#include <mach/udc.h>
#include <linux/platform_data/asoc-palm27x.h>
#include <mach/palm27x.h>

#include <mach/pm.h>
#include <linux/platform_data/camera-pxa.h>

#include <media/soc_camera.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 */

    /* PXA Camera */
    GPIO81_CIF_DD_0,
    GPIO48_CIF_DD_5,
    GPIO50_CIF_DD_3,
    GPIO51_CIF_DD_2,
    GPIO52_CIF_DD_4,
    GPIO53_CIF_MCLK,
    GPIO54_CIF_PCLK,
    GPIO55_CIF_DD_1,
    GPIO84_CIF_FV,
    GPIO85_CIF_LV,
    GPIO93_CIF_DD_6,
    GPIO108_CIF_DD_7,

    GPIO56_GPIO,    /* OV9640 Powerdown */
    GPIO57_GPIO,    /* OV9640 Reset */
    GPIO91_GPIO,    /* OV9640 Power */

    /* I2C */
    GPIO117_GPIO,   /* I2C_SCL */
    GPIO118_GPIO,   /* I2C_SDA */

    /* 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;

/* syscore_ops for Palm Zire 72 PM */

static int palmz72_pm_suspend(void)
{
    /* setup the resume_info struct for the original bootloader */
    palmz72_resume_info.resume_addr = (u32) 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 void palmz72_pm_resume(void)
{
    *PALMZ72_SAVE_DWORD = store_ptr;
}

static struct syscore_ops palmz72_pm_syscore_ops = {
    .suspend = palmz72_pm_suspend,
    .resume = palmz72_pm_resume,
};

static int __init palmz72_pm_init(void)
{
    if (machine_is_palmz72()) {
        register_syscore_ops(&palmz72_pm_syscore_ops);
        return 0;
    }
    return -ENODEV;
}

device_initcall(palmz72_pm_init);
#endif

/******************************************************************************
 * SoC Camera
 ******************************************************************************/
#if defined(CONFIG_SOC_CAMERA_OV9640) || \
    defined(CONFIG_SOC_CAMERA_OV9640_MODULE)
static struct pxacamera_platform_data palmz72_pxacamera_platform_data = {
    .flags      = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
            PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
    .mclk_10khz = 2600,
};

/* Board I2C devices. */
static struct i2c_board_info palmz72_i2c_device[] = {
    {
        I2C_BOARD_INFO("ov9640", 0x30),
    }
};

static int palmz72_camera_power(struct device *dev, int power)
{
    gpio_set_value(GPIO_NR_PALMZ72_CAM_PWDN, !power);
    mdelay(50);
    return 0;
}

static int palmz72_camera_reset(struct device *dev)
{
    gpio_set_value(GPIO_NR_PALMZ72_CAM_RESET, 1);
    mdelay(50);
    gpio_set_value(GPIO_NR_PALMZ72_CAM_RESET, 0);
    mdelay(50);
    return 0;
}

static struct soc_camera_link palmz72_iclink = {
    .bus_id     = 0, /* Match id in pxa27x_device_camera in device.c */
    .board_info = &palmz72_i2c_device[0],
    .i2c_adapter_id = 0,
    .module_name    = "ov96xx",
    .power      = &palmz72_camera_power,
    .reset      = &palmz72_camera_reset,
    .flags      = SOCAM_DATAWIDTH_8,
};

static struct i2c_gpio_platform_data palmz72_i2c_bus_data = {
    .sda_pin    = 118,
    .scl_pin    = 117,
    .udelay     = 10,
    .timeout    = 100,
};

static struct platform_device palmz72_i2c_bus_device = {
    .name       = "i2c-gpio",
    .id     = 0, /* we use this as a replacement for i2c-pxa */
    .dev        = {
        .platform_data  = &palmz72_i2c_bus_data,
    }
};

static struct platform_device palmz72_camera = {
    .name   = "soc-camera-pdrv",
    .id = -1,
    .dev    = {
        .platform_data  = &palmz72_iclink,
    },
};

/* Here we request the camera GPIOs and configure them. We power up the camera
 * module, deassert the reset pin, but put it into powerdown (low to no power
 * consumption) mode. This allows us to later bring the module up fast. */
static struct gpio palmz72_camera_gpios[] = {
    { GPIO_NR_PALMZ72_CAM_POWER,    GPIOF_INIT_HIGH,"Camera DVDD" },
    { GPIO_NR_PALMZ72_CAM_RESET,    GPIOF_INIT_LOW, "Camera RESET" },
    { GPIO_NR_PALMZ72_CAM_PWDN, GPIOF_INIT_LOW, "Camera PWDN" },
};

static inline void __init palmz72_cam_gpio_init(void)
{
    int ret;

    ret = gpio_request_array(ARRAY_AND_SIZE(palmz72_camera_gpios));
    if (!ret)
        gpio_free_array(ARRAY_AND_SIZE(palmz72_camera_gpios));
    else
        printk(KERN_ERR "Camera GPIO init failed!\n");

    return;
}

static void __init palmz72_camera_init(void)
{
    palmz72_cam_gpio_init();
    pxa_set_camera_info(&palmz72_pxacamera_platform_data);
    platform_device_register(&palmz72_i2c_bus_device);
    platform_device_register(&palmz72_camera);
}
#else
static inline void palmz72_camera_init(void) {}
#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();
    palmz72_camera_init();
}

MACHINE_START(PALMZ72, "Palm Zire72")
    .atag_offset    = 0x100,
    .map_io     = pxa27x_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa27x_init_irq,
    .handle_irq = pxa27x_handle_irq,
    .timer      = &pxa_timer,
    .init_machine   = palmz72_init,
    .restart    = pxa_restart,
MACHINE_END