board-palmz71.c

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/*
 * 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/gpio.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 <linux/mtd/physmap.h>
#include <linux/omapfb.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/platform_data/omap1_bl.h>

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

#include <mach/flash.h>
#include <mach/mux.h>
#include <plat/dma.h>
#include <plat/tc.h>
#include <mach/irda.h>
#include <linux/platform_data/keypad-omap.h>

#include <mach/hardware.h>
#include <mach/usb.h>

#include "common.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 const unsigned int palmz71_keymap[] = {
    KEY(0, 0, KEY_F1),
    KEY(1, 0, KEY_F2),
    KEY(2, 0, KEY_F3),
    KEY(3, 0, KEY_F4),
    KEY(4, 0, KEY_POWER),
    KEY(0, 1, KEY_LEFT),
    KEY(1, 1, KEY_DOWN),
    KEY(2, 1, KEY_UP),
    KEY(3, 1, KEY_RIGHT),
    KEY(4, 1, KEY_ENTER),
    KEY(0, 2, KEY_CAMERA),
};

static const struct matrix_keymap_data palmz71_keymap_data = {
    .keymap     = palmz71_keymap,
    .keymap_size    = ARRAY_SIZE(palmz71_keymap),
};

static struct omap_kp_platform_data palmz71_kp_data = {
    .rows   = 8,
    .cols   = 8,
    .keymap_data    = &palmz71_keymap_data,
    .rep    = true,
    .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 physmap_flash_data palmz71_rom_data = {
    .width      = 2,
    .set_vpp    = omap1_set_vpp,
    .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   = "physmap-flash",
    .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,
    .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 irqreturn_t
palmz71_powercable(int irq, void *dev_id)
{
    if (gpio_get_value(PALMZ71_USBDETECT_GPIO)) {
        printk(KERN_INFO "PM: Power cable connected\n");
        irq_set_irq_type(gpio_to_irq(PALMZ71_USBDETECT_GPIO),
                 IRQ_TYPE_EDGE_FALLING);
    } else {
        printk(KERN_INFO "PM: Power cable disconnected\n");
        irq_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, 0, "palmz71-cable", NULL))
            printk(KERN_ERR
                    "IRQ request for power cable failed!\n");
        palmz71_powercable(gpio_to_irq(PALMZ71_USBDETECT_GPIO), NULL);
    }
}

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);

    platform_add_devices(devices, ARRAY_SIZE(devices));

    palmz71_boardinfo[0].irq = gpio_to_irq(PALMZ71_PENIRQ_GPIO);
    spi_register_board_info(palmz71_boardinfo,
                ARRAY_SIZE(palmz71_boardinfo));
    omap1_usb_init(&palmz71_usb_config);
    omap_serial_init();
    omap_register_i2c_bus(1, 100, NULL, 0);
    palmz71_gpio_setup(0);

    omapfb_set_lcd_config(&palmz71_lcd_config);
}

MACHINE_START(OMAP_PALMZ71, "OMAP310 based Palm Zire71")
    .atag_offset    = 0x100,
    .map_io     = omap15xx_map_io,
    .init_early     = omap1_init_early,
    .reserve    = omap_reserve,
    .init_irq   = omap1_init_irq,
    .init_machine   = omap_palmz71_init,
    .init_late  = omap1_init_late,
    .timer      = &omap1_timer,
    .restart    = omap1_restart,
MACHINE_END