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palmtx.c

/*
 * Hardware definitions for PalmTX
 *
 * Author:     Marek Vasut <marek.vasut@gmail.com>
 *
 * Based on work of:
 *          Alex Osborne <ato@meshy.org>
 *          Cristiano P. <cristianop@users.sourceforge.net>
 *          Jan Herman <2hp@seznam.cz>
 *          Michal Hrusecky
 *
 * 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_batt.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.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/palmtx.h>
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/irda.h>
#include <mach/pxa27x_keypad.h>
#include <mach/udc.h>
#include <mach/palmasoc.h>

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

/******************************************************************************
 * Pin configuration
 ******************************************************************************/
static unsigned long palmtx_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 */
      GPIO114_GPIO,     /* SD power */
      GPIO115_GPIO,     /* SD r/o switch */

      /* AC97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO89_AC97_SYSCLK,
      GPIO95_AC97_nRESET,

      /* IrDA */
      GPIO40_GPIO,      /* ir disable */
      GPIO46_FICP_RXD,
      GPIO47_FICP_TXD,

      /* PWM */
      GPIO16_PWM0_OUT,

      /* USB */
      GPIO13_GPIO,      /* usb detect */
      GPIO93_GPIO,      /* usb power */

      /* PCMCIA */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO79_PSKTSEL,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,
      GPIO94_GPIO,      /* wifi power 1 */
      GPIO108_GPIO,     /* wifi power 2 */
      GPIO116_GPIO,     /* wifi ready */

      /* 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 */
      GPIO58_LCD_LDD_0,
      GPIO59_LCD_LDD_1,
      GPIO60_LCD_LDD_2,
      GPIO61_LCD_LDD_3,
      GPIO62_LCD_LDD_4,
      GPIO63_LCD_LDD_5,
      GPIO64_LCD_LDD_6,
      GPIO65_LCD_LDD_7,
      GPIO66_LCD_LDD_8,
      GPIO67_LCD_LDD_9,
      GPIO68_LCD_LDD_10,
      GPIO69_LCD_LDD_11,
      GPIO70_LCD_LDD_12,
      GPIO71_LCD_LDD_13,
      GPIO72_LCD_LDD_14,
      GPIO73_LCD_LDD_15,
      GPIO74_LCD_FCLK,
      GPIO75_LCD_LCLK,
      GPIO76_LCD_PCLK,
      GPIO77_LCD_BIAS,

      /* FFUART */
      GPIO34_FFUART_RXD,
      GPIO39_FFUART_TXD,

      /* NAND */
      GPIO15_nCS_1,
      GPIO18_RDY,

      /* MISC. */
      GPIO10_GPIO,      /* hotsync button */
      GPIO12_GPIO,      /* power detect */
      GPIO107_GPIO,     /* earphone detect */
};

/******************************************************************************
 * NOR Flash
 ******************************************************************************/
static struct mtd_partition palmtx_partitions[] = {
      {
            .name       = "Flash",
            .offset           = 0x00000000,
            .size       = MTDPART_SIZ_FULL,
            .mask_flags = 0
      }
};

static struct physmap_flash_data palmtx_flash_data[] = {
      {
            .width            = 2,              /* bankwidth in bytes */
            .parts            = palmtx_partitions,
            .nr_parts   = ARRAY_SIZE(palmtx_partitions)
      }
};

static struct resource palmtx_flash_resource = {
      .start      = PXA_CS0_PHYS,
      .end  = PXA_CS0_PHYS + SZ_8M - 1,
      .flags      = IORESOURCE_MEM,
};

static struct platform_device palmtx_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .resource   = &palmtx_flash_resource,
      .num_resources    = 1,
      .dev        = {
            .platform_data = palmtx_flash_data,
      },
};

/******************************************************************************
 * SD/MMC card controller
 ******************************************************************************/
static struct pxamci_platform_data palmtx_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .gpio_card_detect = GPIO_NR_PALMTX_SD_DETECT_N,
      .gpio_card_ro           = GPIO_NR_PALMTX_SD_READONLY,
      .gpio_power       = GPIO_NR_PALMTX_SD_POWER,
      .detect_delay           = 20,
};

/******************************************************************************
 * GPIO keyboard
 ******************************************************************************/
static unsigned int palmtx_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 palmtx_keypad_platform_data = {
      .matrix_key_rows  = 4,
      .matrix_key_cols  = 3,
      .matrix_key_map         = palmtx_matrix_keys,
      .matrix_key_map_size    = ARRAY_SIZE(palmtx_matrix_keys),

      .debounce_interval      = 30,
};

/******************************************************************************
 * GPIO keys
 ******************************************************************************/
static struct gpio_keys_button palmtx_pxa_buttons[] = {
      {KEY_F8, GPIO_NR_PALMTX_HOTSYNC_BUTTON_N, 1, "HotSync Button" },
};

static struct gpio_keys_platform_data palmtx_pxa_keys_data = {
      .buttons    = palmtx_pxa_buttons,
      .nbuttons   = ARRAY_SIZE(palmtx_pxa_buttons),
};

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

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

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

      return 0;
err3:
      gpio_free(GPIO_NR_PALMTX_LCD_POWER);
err2:
      gpio_free(GPIO_NR_PALMTX_BL_POWER);
err:
      return ret;
}

static int palmtx_backlight_notify(int brightness)
{
      gpio_set_value(GPIO_NR_PALMTX_BL_POWER, brightness);
      gpio_set_value(GPIO_NR_PALMTX_LCD_POWER, brightness);
      return brightness;
}

static void palmtx_backlight_exit(struct device *dev)
{
      gpio_free(GPIO_NR_PALMTX_BL_POWER);
      gpio_free(GPIO_NR_PALMTX_LCD_POWER);
}

static struct platform_pwm_backlight_data palmtx_backlight_data = {
      .pwm_id           = 0,
      .max_brightness   = PALMTX_MAX_INTENSITY,
      .dft_brightness   = PALMTX_MAX_INTENSITY,
      .pwm_period_ns    = PALMTX_PERIOD_NS,
      .init       = palmtx_backlight_init,
      .notify           = palmtx_backlight_notify,
      .exit       = palmtx_backlight_exit,
};

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

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

/******************************************************************************
 * UDC
 ******************************************************************************/
static struct gpio_vbus_mach_info palmtx_udc_info = {
      .gpio_vbus        = GPIO_NR_PALMTX_USB_DETECT_N,
      .gpio_vbus_inverted     = 1,
      .gpio_pullup            = GPIO_NR_PALMTX_USB_PULLUP,
};

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

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

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

      return 0;

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

static int palmtx_is_ac_online(void)
{
      return gpio_get_value(GPIO_NR_PALMTX_POWER_DETECT);
}

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

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

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

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

/******************************************************************************
 * WM97xx battery
 ******************************************************************************/
static struct wm97xx_batt_info wm97xx_batt_pdata = {
      .batt_aux   = WM97XX_AUX_ID3,
      .temp_aux   = WM97XX_AUX_ID2,
      .charge_gpio      = -1,
      .max_voltage      = PALMTX_BAT_MAX_VOLTAGE,
      .min_voltage      = PALMTX_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",
};

/******************************************************************************
 * aSoC audio
 ******************************************************************************/
static struct palm27x_asoc_info palmtx_asoc_pdata = {
      .jack_gpio  = GPIO_NR_PALMTX_EARPHONE_DETECT,
};

static pxa2xx_audio_ops_t palmtx_ac97_pdata = {
      .reset_gpio = 95,
};

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

/******************************************************************************
 * Framebuffer
 ******************************************************************************/
static struct pxafb_mode_info palmtx_lcd_modes[] = {
{
      .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,
},
};

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

/******************************************************************************
 * NAND Flash
 ******************************************************************************/
static void palmtx_nand_cmd_ctl(struct mtd_info *mtd, int cmd,
                         unsigned int ctrl)
{
      struct nand_chip *this = mtd->priv;
      unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;

      if (cmd == NAND_CMD_NONE)
            return;

      if (ctrl & NAND_CLE)
            writeb(cmd, PALMTX_NAND_CLE_VIRT);
      else if (ctrl & NAND_ALE)
            writeb(cmd, PALMTX_NAND_ALE_VIRT);
      else
            writeb(cmd, nandaddr);
}

static struct mtd_partition palmtx_partition_info[] = {
      [0] = {
            .name = "palmtx-0",
            .offset     = 0,
            .size = MTDPART_SIZ_FULL
      },
};

static const char *palmtx_part_probes[] = { "cmdlinepart", NULL };

struct platform_nand_data palmtx_nand_platdata = {
      .chip = {
            .nr_chips         = 1,
            .chip_offset            = 0,
            .nr_partitions          = ARRAY_SIZE(palmtx_partition_info),
            .partitions       = palmtx_partition_info,
            .chip_delay       = 20,
            .part_probe_types       = palmtx_part_probes,
      },
      .ctrl = {
            .cmd_ctrl   = palmtx_nand_cmd_ctl,
      },
};

static struct resource palmtx_nand_resource[] = {
      [0]   = {
            .start      = PXA_CS1_PHYS,
            .end  = PXA_CS1_PHYS + SZ_1M - 1,
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device palmtx_nand = {
      .name       = "gen_nand",
      .num_resources    = ARRAY_SIZE(palmtx_nand_resource),
      .resource   = palmtx_nand_resource,
      .id         = -1,
      .dev        = {
            .platform_data    = &palmtx_nand_platdata,
      }
};

/******************************************************************************
 * Power management - standby
 ******************************************************************************/
static void __init palmtx_pm_init(void)
{
      static u32 resume[] = {
            0xe3a00101, /* mov      r0,   #0x40000000 */
            0xe380060f, /* orr      r0, r0, #0x00f00000 */
            0xe590f008, /* ldr      pc, [r0, #0x08] */
      };

      /* copy the bootloader */
      memcpy(phys_to_virt(PALMTX_STR_BASE), resume, sizeof(resume));
}

/******************************************************************************
 * Machine init
 ******************************************************************************/
static struct platform_device *devices[] __initdata = {
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
      &palmtx_pxa_keys,
#endif
      &palmtx_backlight,
      &power_supply,
      &palmtx_asoc,
      &palmtx_gpio_vbus,
      &palmtx_flash,
      &palmtx_nand,
};

static struct map_desc palmtx_io_desc[] __initdata = {
{
      .virtual    = PALMTX_PCMCIA_VIRT,
      .pfn        = __phys_to_pfn(PALMTX_PCMCIA_PHYS),
      .length           = PALMTX_PCMCIA_SIZE,
      .type       = MT_DEVICE,
}, {
      .virtual    = PALMTX_NAND_ALE_VIRT,
      .pfn        = __phys_to_pfn(PALMTX_NAND_ALE_PHYS),
      .length           = SZ_1M,
      .type       = MT_DEVICE,
}, {
      .virtual    = PALMTX_NAND_CLE_VIRT,
      .pfn        = __phys_to_pfn(PALMTX_NAND_CLE_PHYS),
      .length           = SZ_1M,
      .type       = MT_DEVICE,
}
};

static void __init palmtx_map_io(void)
{
      pxa_map_io();
      iotable_init(palmtx_io_desc, ARRAY_SIZE(palmtx_io_desc));
}

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


static void __init palmtx_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(palmtx_pin_config));

      palmtx_pm_init();
      set_pxa_fb_info(&palmtx_lcd_screen);
      pxa_set_mci_info(&palmtx_mci_platform_data);
      palmtx_udc_init();
      pxa_set_ac97_info(&palmtx_ac97_pdata);
      pxa_set_ficp_info(&palmtx_ficp_platform_data);
      pxa_set_keypad_info(&palmtx_keypad_platform_data);
      wm97xx_bat_set_pdata(&wm97xx_batt_pdata);

      platform_add_devices(devices, ARRAY_SIZE(devices));
}

MACHINE_START(PALMTX, "Palm T|X")
      .phys_io    = PALMTX_PHYS_IO_START,
      .io_pg_offst      = io_p2v(0x40000000),
      .boot_params      = 0xa0000100,
      .map_io           = palmtx_map_io,
      .init_irq   = pxa27x_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = palmtx_init
MACHINE_END

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