linux/arch/arm/mach-sa1100/h3600.c
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   1/*
   2 * Support for Compaq iPAQ H3600 handheld computer
   3 *
   4 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
   5 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 */
  12
  13#include <linux/init.h>
  14#include <linux/kernel.h>
  15#include <linux/gpio.h>
  16
  17#include <video/sa1100fb.h>
  18
  19#include <asm/mach-types.h>
  20#include <asm/mach/arch.h>
  21#include <asm/mach/irda.h>
  22
  23#include <mach/h3xxx.h>
  24#include <mach/irqs.h>
  25
  26#include "generic.h"
  27
  28/*
  29 * helper for sa1100fb
  30 */
  31static void h3600_lcd_power(int enable)
  32{
  33        if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
  34                pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
  35                goto err1;
  36        }
  37        if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
  38                pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
  39                goto err2;
  40        }
  41        if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
  42                pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
  43                goto err3;
  44        }
  45        if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
  46                pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
  47                goto err4;
  48        }
  49
  50        gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  51        gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
  52        gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
  53        gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
  54
  55        gpio_free(H3600_EGPIO_LVDD_ON);
  56err4:   gpio_free(H3600_EGPIO_LCD_5V_ON);
  57err3:   gpio_free(H3600_EGPIO_LCD_PCI);
  58err2:   gpio_free(H3XXX_EGPIO_LCD_ON);
  59err1:   return;
  60}
  61
  62static const struct sa1100fb_rgb h3600_rgb_16 = {
  63        .red    = { .offset = 12, .length = 4, },
  64        .green  = { .offset = 7,  .length = 4, },
  65        .blue   = { .offset = 1,  .length = 4, },
  66        .transp = { .offset = 0,  .length = 0, },
  67};
  68
  69static struct sa1100fb_mach_info h3600_lcd_info = {
  70        .pixclock       = 174757,       .bpp            = 16,
  71        .xres           = 320,          .yres           = 240,
  72
  73        .hsync_len      = 3,            .vsync_len      = 3,
  74        .left_margin    = 12,           .upper_margin   = 10,
  75        .right_margin   = 17,           .lower_margin   = 1,
  76
  77        .cmap_static    = 1,
  78
  79        .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
  80        .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  81
  82        .rgb[RGB_16] = &h3600_rgb_16,
  83
  84        .lcd_power = h3600_lcd_power,
  85};
  86
  87
  88static void __init h3600_map_io(void)
  89{
  90        h3xxx_map_io();
  91}
  92
  93/*
  94 * This turns the IRDA power on or off on the Compaq H3600
  95 */
  96static int h3600_irda_set_power(struct device *dev, unsigned int state)
  97{
  98        gpio_set_value(H3600_EGPIO_IR_ON, state);
  99        return 0;
 100}
 101
 102static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 103{
 104        gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
 105}
 106
 107static int h3600_irda_startup(struct device *dev)
 108{
 109        int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
 110        if (err)
 111                goto err1;
 112        err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
 113        if (err)
 114                goto err2;
 115        err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
 116        if (err)
 117                goto err2;
 118        err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
 119        if (err)
 120                goto err3;
 121        return 0;
 122
 123err3:   gpio_free(H3600_EGPIO_IR_FSEL);
 124err2:   gpio_free(H3600_EGPIO_IR_ON);
 125err1:   return err;
 126}
 127
 128static void h3600_irda_shutdown(struct device *dev)
 129{
 130        gpio_free(H3600_EGPIO_IR_ON);
 131        gpio_free(H3600_EGPIO_IR_FSEL);
 132}
 133
 134static struct irda_platform_data h3600_irda_data = {
 135        .set_power      = h3600_irda_set_power,
 136        .set_speed      = h3600_irda_set_speed,
 137        .startup        = h3600_irda_startup,
 138        .shutdown       = h3600_irda_shutdown,
 139};
 140
 141static struct gpio_default_state h3600_default_gpio[] = {
 142        { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
 143        { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
 144        { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
 145};
 146
 147static void __init h3600_mach_init(void)
 148{
 149        h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
 150        h3xxx_mach_init();
 151
 152        sa11x0_register_lcd(&h3600_lcd_info);
 153        sa11x0_register_irda(&h3600_irda_data);
 154}
 155
 156MACHINE_START(H3600, "Compaq iPAQ H3600")
 157        .atag_offset    = 0x100,
 158        .map_io         = h3600_map_io,
 159        .nr_irqs        = SA1100_NR_IRQS,
 160        .init_irq       = sa1100_init_irq,
 161        .init_time      = sa1100_timer_init,
 162        .init_machine   = h3600_mach_init,
 163        .init_late      = sa11x0_init_late,
 164        .restart        = sa11x0_restart,
 165MACHINE_END
 166
 167