h3600.c

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/*
 * Support for Compaq iPAQ H3600 handheld computer
 *
 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
 * Copyright (c) 2009 Dmitry Artamonow <[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.
 *
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/gpio.h>

#include <video/sa1100fb.h>

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

#include <mach/h3xxx.h>
#include <mach/irqs.h>

#include "generic.h"

/*
 * helper for sa1100fb
 */
static void h3600_lcd_power(int enable)
{
    if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
        pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
        goto err1;
    }
    if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
        pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
        goto err2;
    }
    if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
        pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
        goto err3;
    }
    if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
        pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
        goto err4;
    }

    gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
    gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
    gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
    gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);

    gpio_free(H3600_EGPIO_LVDD_ON);
err4:   gpio_free(H3600_EGPIO_LCD_5V_ON);
err3:   gpio_free(H3600_EGPIO_LCD_PCI);
err2:   gpio_free(H3XXX_EGPIO_LCD_ON);
err1:   return;
}

static const struct sa1100fb_rgb h3600_rgb_16 = {
    .red    = { .offset = 12, .length = 4, },
    .green  = { .offset = 7,  .length = 4, },
    .blue   = { .offset = 1,  .length = 4, },
    .transp = { .offset = 0,  .length = 0, },
};

static struct sa1100fb_mach_info h3600_lcd_info = {
    .pixclock   = 174757,   .bpp        = 16,
    .xres       = 320,      .yres       = 240,

    .hsync_len  = 3,        .vsync_len  = 3,
    .left_margin    = 12,       .upper_margin   = 10,
    .right_margin   = 17,       .lower_margin   = 1,

    .cmap_static    = 1,

    .lccr0      = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
    .lccr3      = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),

    .rgb[RGB_16] = &h3600_rgb_16,

    .lcd_power = h3600_lcd_power,
};


static void __init h3600_map_io(void)
{
    h3xxx_map_io();
}

/*
 * This turns the IRDA power on or off on the Compaq H3600
 */
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
    gpio_set_value(H3600_EGPIO_IR_ON, state);
    return 0;
}

static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
{
    gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
}

static int h3600_irda_startup(struct device *dev)
{
    int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
    if (err)
        goto err1;
    err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
    if (err)
        goto err2;
    err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
    if (err)
        goto err2;
    err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
    if (err)
        goto err3;
    return 0;

err3:   gpio_free(H3600_EGPIO_IR_FSEL);
err2:   gpio_free(H3600_EGPIO_IR_ON);
err1:   return err;
}

static void h3600_irda_shutdown(struct device *dev)
{
    gpio_free(H3600_EGPIO_IR_ON);
    gpio_free(H3600_EGPIO_IR_FSEL);
}

static struct irda_platform_data h3600_irda_data = {
    .set_power  = h3600_irda_set_power,
    .set_speed  = h3600_irda_set_speed,
    .startup    = h3600_irda_startup,
    .shutdown   = h3600_irda_shutdown,
};

static struct gpio_default_state h3600_default_gpio[] = {
    { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
    { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
    { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
};

static void __init h3600_mach_init(void)
{
    h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
    h3xxx_mach_init();

    sa11x0_register_lcd(&h3600_lcd_info);
    sa11x0_register_irda(&h3600_irda_data);
}

MACHINE_START(H3600, "Compaq iPAQ H3600")
    .atag_offset    = 0x100,
    .map_io     = h3600_map_io,
    .nr_irqs    = SA1100_NR_IRQS,
    .init_irq   = sa1100_init_irq,
    .timer      = &sa1100_timer,
    .init_machine   = h3600_mach_init,
    .init_late  = sa11x0_init_late,
    .restart    = sa11x0_restart,
MACHINE_END