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board-palmz71.c

/*
 * linux/arch/arm/mach-omap1/board-palmz71.c
 *
 * Modified from board-generic.c
 *
 * Support for the Palm Zire71 PDA.
 *
 * Original version : Laurent Gonzalez
 *
 * Modified for zire71 : Marek Vasut
 *
 * 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/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/notifier.h>
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>

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

#include <mach/gpio.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/dma.h>
#include <mach/tc.h>
#include <mach/board.h>
#include <mach/irda.h>
#include <mach/keypad.h>
#include <mach/common.h>
#include <mach/omap-alsa.h>

#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>

#define PALMZ71_USBDETECT_GPIO      0
#define PALMZ71_PENIRQ_GPIO   6
#define PALMZ71_MMC_WP_GPIO   8
#define PALMZ71_HDQ_GPIO      11

#define PALMZ71_HOTSYNC_GPIO  OMAP_MPUIO(1)
#define PALMZ71_CABLE_GPIO    OMAP_MPUIO(2)
#define PALMZ71_SLIDER_GPIO   OMAP_MPUIO(3)
#define PALMZ71_MMC_IN_GPIO   OMAP_MPUIO(4)

static void __init
omap_palmz71_init_irq(void)
{
      omap1_init_common_hw();
      omap_init_irq();
      omap_gpio_init();
}

static int palmz71_keymap[] = {
      KEY(0, 0, KEY_F1),
      KEY(0, 1, KEY_F2),
      KEY(0, 2, KEY_F3),
      KEY(0, 3, KEY_F4),
      KEY(0, 4, KEY_POWER),
      KEY(1, 0, KEY_LEFT),
      KEY(1, 1, KEY_DOWN),
      KEY(1, 2, KEY_UP),
      KEY(1, 3, KEY_RIGHT),
      KEY(1, 4, KEY_ENTER),
      KEY(2, 0, KEY_CAMERA),
      0,
};

static struct omap_kp_platform_data palmz71_kp_data = {
      .rows = 8,
      .cols = 8,
      .keymap     = palmz71_keymap,
      .rep  = 1,
      .delay      = 80,
};

static struct resource palmz71_kp_resources[] = {
      [0] = {
            .start      = INT_KEYBOARD,
            .end  = INT_KEYBOARD,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device palmz71_kp_device = {
      .name = "omap-keypad",
      .id   = -1,
      .dev  = {
            .platform_data = &palmz71_kp_data,
      },
      .num_resources    = ARRAY_SIZE(palmz71_kp_resources),
      .resource   = palmz71_kp_resources,
};

static struct mtd_partition palmz71_rom_partitions[] = {
      /* PalmOS "Small ROM", contains the bootloader and the debugger */
      {
            .name       = "smallrom",
            .offset           = 0,
            .size       = 0xa000,
            .mask_flags = MTD_WRITEABLE,
      },
      /* PalmOS "Big ROM", a filesystem with all the OS code and data */
      {
            .name = "bigrom",
            .offset     = SZ_128K,
            /*
             * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
             * 0x7b0000 bytes in the English-only ("enUS") version.
             */
            .size       = 0x7b0000,
            .mask_flags = MTD_WRITEABLE,
      },
};

static struct flash_platform_data palmz71_rom_data = {
      .map_name   = "map_rom",
      .name       = "onboardrom",
      .width            = 2,
      .parts            = palmz71_rom_partitions,
      .nr_parts   = ARRAY_SIZE(palmz71_rom_partitions),
};

static struct resource palmz71_rom_resource = {
      .start      = OMAP_CS0_PHYS,
      .end  = OMAP_CS0_PHYS + SZ_8M - 1,
      .flags      = IORESOURCE_MEM,
};

static struct platform_device palmz71_rom_device = {
      .name = "omapflash",
      .id   = -1,
      .dev = {
            .platform_data = &palmz71_rom_data,
      },
      .num_resources    = 1,
      .resource   = &palmz71_rom_resource,
};

static struct platform_device palmz71_lcd_device = {
      .name = "lcd_palmz71",
      .id   = -1,
};

static struct omap_irda_config palmz71_irda_config = {
      .transceiver_cap  = IR_SIRMODE,
      .rx_channel       = OMAP_DMA_UART3_RX,
      .tx_channel       = OMAP_DMA_UART3_TX,
      .dest_start       = UART3_THR,
      .src_start        = UART3_RHR,
      .tx_trigger       = 0,
      .rx_trigger       = 0,
};

static struct resource palmz71_irda_resources[] = {
      [0] = {
            .start      = INT_UART3,
            .end  = INT_UART3,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device palmz71_irda_device = {
      .name = "omapirda",
      .id   = -1,
      .dev = {
            .platform_data = &palmz71_irda_config,
      },
      .num_resources    = ARRAY_SIZE(palmz71_irda_resources),
      .resource   = palmz71_irda_resources,
};

static struct platform_device palmz71_spi_device = {
      .name = "spi_palmz71",
      .id   = -1,
};

static struct omap_backlight_config palmz71_backlight_config = {
      .default_intensity      = 0xa0,
};

static struct platform_device palmz71_backlight_device = {
      .name = "omap-bl",
      .id   = -1,
      .dev  = {
            .platform_data = &palmz71_backlight_config,
      },
};

static struct platform_device *devices[] __initdata = {
      &palmz71_rom_device,
      &palmz71_kp_device,
      &palmz71_lcd_device,
      &palmz71_irda_device,
      &palmz71_spi_device,
      &palmz71_backlight_device,
};

static int
palmz71_get_pendown_state(void)
{
      return !gpio_get_value(PALMZ71_PENIRQ_GPIO);
}

static const struct ads7846_platform_data palmz71_ts_info = {
      .model                  = 7846,
      .vref_delay_usecs = 100,      /* internal, no capacitor */
      .x_plate_ohms           = 419,
      .y_plate_ohms           = 486,
      .get_pendown_state      = palmz71_get_pendown_state,
};

static struct spi_board_info __initdata palmz71_boardinfo[] = { {
      /* MicroWire (bus 2) CS0 has an ads7846e */
      .modalias   = "ads7846",
      .platform_data    = &palmz71_ts_info,
      .irq        = OMAP_GPIO_IRQ(PALMZ71_PENIRQ_GPIO),
      .max_speed_hz     = 120000    /* max sample rate at 3V */
                        * 26  /* command + data + overhead */,
      .bus_num    = 2,
      .chip_select      = 0,
} };

static struct omap_usb_config palmz71_usb_config __initdata = {
      .register_dev     = 1,  /* Mini-B only receptacle */
      .hmc_mode   = 0,
      .pins[0]    = 2,
};

static struct omap_lcd_config palmz71_lcd_config __initdata = {
      .ctrl_name = "internal",
};

static struct omap_board_config_kernel palmz71_config[] __initdata = {
      {OMAP_TAG_LCD,    &palmz71_lcd_config},
};

static irqreturn_t
palmz71_powercable(int irq, void *dev_id)
{
      if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
            printk(KERN_INFO "PM: Power cable connected\n");
            set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
                        IRQ_TYPE_EDGE_FALLING);
      } else {
            printk(KERN_INFO "PM: Power cable disconnected\n");
            set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
                        IRQ_TYPE_EDGE_RISING);
      }
      return IRQ_HANDLED;
}

static void __init
omap_mpu_wdt_mode(int mode)
{
      if (mode)
            omap_writew(0x8000, OMAP_WDT_TIMER_MODE);
      else {
            omap_writew(0x00f5, OMAP_WDT_TIMER_MODE);
            omap_writew(0x00a0, OMAP_WDT_TIMER_MODE);
      }
}

static void __init
palmz71_gpio_setup(int early)
{
      if (early) {
            /* Only set GPIO1 so we have a working serial */
            gpio_direction_output(1, 1);
      } else {
            /* Set MMC/SD host WP pin as input */
            if (gpio_request(PALMZ71_MMC_WP_GPIO, "MMC WP") < 0) {
                  printk(KERN_ERR "Could not reserve WP GPIO!\n");
                  return;
            }
            gpio_direction_input(PALMZ71_MMC_WP_GPIO);

            /* Monitor the Power-cable-connected signal */
            if (gpio_request(PALMZ71_USBDETECT_GPIO, "USB detect") < 0) {
                  printk(KERN_ERR
                        "Could not reserve cable signal GPIO!\n");
                  return;
            }
            gpio_direction_input(PALMZ71_USBDETECT_GPIO);
            if (request_irq(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
                        palmz71_powercable, IRQF_SAMPLE_RANDOM,
                        "palmz71-cable", 0))
                  printk(KERN_ERR
                              "IRQ request for power cable failed!\n");
            palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), 0);
      }
}

static void __init
omap_palmz71_init(void)
{
      /* mux pins for uarts */
      omap_cfg_reg(UART1_TX);
      omap_cfg_reg(UART1_RTS);
      omap_cfg_reg(UART2_TX);
      omap_cfg_reg(UART2_RTS);
      omap_cfg_reg(UART3_TX);
      omap_cfg_reg(UART3_RX);

      palmz71_gpio_setup(1);
      omap_mpu_wdt_mode(0);

      omap_board_config = palmz71_config;
      omap_board_config_size = ARRAY_SIZE(palmz71_config);

      platform_add_devices(devices, ARRAY_SIZE(devices));

      spi_register_board_info(palmz71_boardinfo,
                        ARRAY_SIZE(palmz71_boardinfo));
      omap_usb_init(&palmz71_usb_config);
      omap_serial_init();
      omap_register_i2c_bus(1, 100, NULL, 0);
      palmz71_gpio_setup(0);
}

static void __init
omap_palmz71_map_io(void)
{
      omap1_map_common_io();
}

MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
      .phys_io = 0xfff00000,
      .io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
      .boot_params = 0x10000100,.map_io = omap_palmz71_map_io,
      .init_irq = omap_palmz71_init_irq,
      .init_machine = omap_palmz71_init,
      .timer = &omap_timer,
MACHINE_END

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