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 <mad_soft@inbox.ru>
*
* 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 struct gpio h3100_lcd_gpio[] = {
{ H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
{ H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
};
static bool h3100_lcd_request(void)
{
static bool h3100_lcd_ok;
int rc;
if (h3100_lcd_ok)
return true;
rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
if (rc)
pr_err("%s: can't request GPIOs\n", __func__);
else
h3100_lcd_ok = true;
return h3100_lcd_ok;
}
static void h3100_lcd_power(int enable)
{
if (!h3100_lcd_request())
return;
gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
}
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 struct gpio h3100_irda_gpio[] = {
{ H3100_GPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
{ H3100_GPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
};
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 int h3100_irda_startup(struct device *dev)
{
return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
}
static void h3100_irda_shutdown(struct device *dev)
{
return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
}
static struct irda_platform_data h3100_irda_data = {
.set_power = h3100_irda_set_power,
.set_speed = h3100_irda_set_speed,
.startup = h3100_irda_startup,
.shutdown = h3100_irda_shutdown,
};
static struct gpio_default_state h3100_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 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,
.init_time = sa1100_timer_init,
.init_machine = h3100_mach_init,
.init_late = sa11x0_init_late,
.restart = sa11x0_restart,
MACHINE_END