h3100.c

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/*
 * Support for Compaq iPAQ H3100 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 h3100_lcd_power(int enable)
{
    if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
        gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
        gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
        gpio_free(H3XXX_EGPIO_LCD_ON);
    } else {
        pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
    }
}

static struct sa1100fb_mach_info h3100_lcd_info = {
    .pixclock   = 406977,   .bpp        = 4,
    .xres       = 320,      .yres       = 240,

    .hsync_len  = 26,       .vsync_len  = 41,
    .left_margin    = 4,        .upper_margin   = 0,
    .right_margin   = 4,        .lower_margin   = 0,

    .sync       = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
    .cmap_greyscale = 1,
    .cmap_inverse   = 1,

    .lccr0      = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
    .lccr3      = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),

    .lcd_power = h3100_lcd_power,
};

static void __init h3100_map_io(void)
{
    h3xxx_map_io();

    /* Older bootldrs put GPIO2-9 in alternate mode on the
       assumption that they are used for video */
    GAFR &= ~0x000001fb;
}

/*
 * This turns the IRDA power on or off on the Compaq H3100
 */
static int h3100_irda_set_power(struct device *dev, unsigned int state)
{
    gpio_set_value(H3100_GPIO_IR_ON, state);
    return 0;
}

static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
{
    gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
}

static struct irda_platform_data h3100_irda_data = {
    .set_power  = h3100_irda_set_power,
    .set_speed  = h3100_irda_set_speed,
};

static struct gpio_default_state h3100_default_gpio[] = {
    { H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" },
    { H3100_GPIO_IR_FSEL,   GPIO_MODE_OUT0, "IrDA fsel" },
    { 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" },
    { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
};

static void __init h3100_mach_init(void)
{
    h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
    h3xxx_mach_init();

    sa11x0_register_lcd(&h3100_lcd_info);
    sa11x0_register_irda(&h3100_irda_data);
}

MACHINE_START(H3100, "Compaq iPAQ H3100")
    .atag_offset    = 0x100,
    .map_io     = h3100_map_io,
    .nr_irqs    = SA1100_NR_IRQS,
    .init_irq   = sa1100_init_irq,
    .timer      = &sa1100_timer,
    .init_machine   = h3100_mach_init,
    .init_late  = sa11x0_init_late,
    .restart    = sa11x0_restart,
MACHINE_END