idp.c

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/*
 *  linux/arch/arm/mach-pxa/idp.c
 *
 *  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.
 *
 *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
 *
 *  2001-09-13: Cliff Brake <[email protected]>
 *              Initial code
 *
 *  2005-02-15: Cliff Brake <[email protected]>
 *          <http://www.vibren.com> <http://bec-systems.com>
 *              Updated for 2.6 kernel
 *
 */

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/fb.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>

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

#include <mach/pxa25x.h>
#include <mach/idp.h>
#include <linux/platform_data/video-pxafb.h>
#include <mach/bitfield.h>
#include <linux/platform_data/mmc-pxamci.h>

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

/* TODO:
 * - add pxa2xx_audio_ops_t device structure
 * - Ethernet interrupt
 */

static unsigned long idp_pin_config[] __initdata = {
    /* LCD */
    GPIOxx_LCD_DSTN_16BPP,

    /* BTUART */
    GPIO42_BTUART_RXD,
    GPIO43_BTUART_TXD,
    GPIO44_BTUART_CTS,
    GPIO45_BTUART_RTS,

    /* STUART */
    GPIO46_STUART_RXD,
    GPIO47_STUART_TXD,

    /* MMC */
    GPIO6_MMC_CLK,
    GPIO8_MMC_CS0,

    /* Ethernet */
    GPIO33_nCS_5,   /* Ethernet CS */
    GPIO4_GPIO, /* Ethernet IRQ */
};

static struct resource smc91x_resources[] = {
    [0] = {
        .start  = (IDP_ETH_PHYS + 0x300),
        .end    = (IDP_ETH_PHYS + 0xfffff),
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = PXA_GPIO_TO_IRQ(4),
        .end    = PXA_GPIO_TO_IRQ(4),
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
    }
};

static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
};

static void idp_backlight_power(int on)
{
    if (on) {
        IDP_CPLD_LCD |= (1<<1);
    } else {
        IDP_CPLD_LCD &= ~(1<<1);
    }
}

static void idp_vlcd(int on)
{
    if (on) {
        IDP_CPLD_LCD |= (1<<2);
    } else {
        IDP_CPLD_LCD &= ~(1<<2);
    }
}

static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
{
    if (on) {
        IDP_CPLD_LCD |= (1<<0);
    } else {
        IDP_CPLD_LCD &= ~(1<<0);
    }

    /* call idp_vlcd for now as core driver does not support
     * both power and vlcd hooks.  Note, this is not technically
     * the correct sequence, but seems to work.  Disclaimer:
     * this may eventually damage the display.
     */

    idp_vlcd(on);
}

static struct pxafb_mode_info sharp_lm8v31_mode = {
    .pixclock   = 270000,
    .xres       = 640,
    .yres       = 480,
    .bpp        = 16,
    .hsync_len  = 1,
    .left_margin    = 3,
    .right_margin   = 3,
    .vsync_len  = 1,
    .upper_margin   = 0,
    .lower_margin   = 0,
    .sync       = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
    .cmap_greyscale = 0,
};

static struct pxafb_mach_info sharp_lm8v31 = {
    .modes          = &sharp_lm8v31_mode,
    .num_modes      = 1,
    .cmap_inverse   = 0,
    .cmap_static    = 0,
    .lcd_conn   = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
              LCD_AC_BIAS_FREQ(255),
    .pxafb_backlight_power = &idp_backlight_power,
    .pxafb_lcd_power = &idp_lcd_power
};

static struct pxamci_platform_data idp_mci_platform_data = {
    .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
    .gpio_card_detect   = -1,
    .gpio_card_ro       = -1,
    .gpio_power     = -1,
};

static void __init idp_init(void)
{
    printk("idp_init()\n");

    pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
    pxa_set_ffuart_info(NULL);
    pxa_set_btuart_info(NULL);
    pxa_set_stuart_info(NULL);

    platform_device_register(&smc91x_device);
    //platform_device_register(&mst_audio_device);
    pxa_set_fb_info(NULL, &sharp_lm8v31);
    pxa_set_mci_info(&idp_mci_platform_data);
}

static struct map_desc idp_io_desc[] __initdata = {
    {
        .virtual    =  IDP_COREVOLT_VIRT,
        .pfn        = __phys_to_pfn(IDP_COREVOLT_PHYS),
        .length     = IDP_COREVOLT_SIZE,
        .type       = MT_DEVICE
    }, {
        .virtual    =  IDP_CPLD_VIRT,
        .pfn        = __phys_to_pfn(IDP_CPLD_PHYS),
        .length     = IDP_CPLD_SIZE,
        .type       = MT_DEVICE
    }
};

static void __init idp_map_io(void)
{
    pxa25x_map_io();
    iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
}

/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct idp_led {
    struct led_classdev     cdev;
    u8                      mask;
};

/*
 * The triggers lines up below will only be used if the
 * LED triggers are compiled in.
 */
static const struct {
    const char *name;
    const char *trigger;
} idp_leds[] = {
    { "idp:green", "heartbeat", },
    { "idp:red", "cpu0", },
};

static void idp_led_set(struct led_classdev *cdev,
        enum led_brightness b)
{
    struct idp_led *led = container_of(cdev,
            struct idp_led, cdev);
    u32 reg = IDP_CPLD_LED_CONTROL;

    if (b != LED_OFF)
        reg &= ~led->mask;
    else
        reg |= led->mask;

    IDP_CPLD_LED_CONTROL = reg;
}

static enum led_brightness idp_led_get(struct led_classdev *cdev)
{
    struct idp_led *led = container_of(cdev,
            struct idp_led, cdev);

    return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
}

static int __init idp_leds_init(void)
{
    int i;

    if (!machine_is_pxa_idp())
        return -ENODEV;

    for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
        struct idp_led *led;

        led = kzalloc(sizeof(*led), GFP_KERNEL);
        if (!led)
            break;

        led->cdev.name = idp_leds[i].name;
        led->cdev.brightness_set = idp_led_set;
        led->cdev.brightness_get = idp_led_get;
        led->cdev.default_trigger = idp_leds[i].trigger;

        if (i == 0)
            led->mask = IDP_HB_LED;
        else
            led->mask = IDP_BUSY_LED;

        if (led_classdev_register(NULL, &led->cdev) < 0) {
            kfree(led);
            break;
        }
    }

    return 0;
}

/*
 * Since we may have triggers on any subsystem, defer registration
 * until after subsystem_init.
 */
fs_initcall(idp_leds_init);
#endif

MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
    /* Maintainer: Vibren Technologies */
    .map_io     = idp_map_io,
    .nr_irqs    = PXA_NR_IRQS,
    .init_irq   = pxa25x_init_irq,
    .handle_irq = pxa25x_handle_irq,
    .timer      = &pxa_timer,
    .init_machine   = idp_init,
    .restart    = pxa_restart,
MACHINE_END