LXR linux/arch/arm/mach-sa1100/h3100.c

   1/*
   2 * Support for Compaq iPAQ H3100 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 <linux/platform_data/irda-sa11x0.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 struct gpio h3100_lcd_gpio[] = {
  32        { H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
  33        { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
  34};
  35
  36static bool h3100_lcd_request(void)
  37{
  38        static bool h3100_lcd_ok;
  39        int rc;
  40
  41        if (h3100_lcd_ok)
  42                return true;
  43
  44        rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
  45        if (rc)
  46                pr_err("%s: can't request GPIOs\n", __func__);
  47        else
  48                h3100_lcd_ok = true;
  49
  50        return h3100_lcd_ok;
  51}
  52
  53static void h3100_lcd_power(int enable)
  54{
  55        if (!h3100_lcd_request())
  56                return;
  57
  58        gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
  59        gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
  60}
  61
  62static struct sa1100fb_mach_info h3100_lcd_info = {
  63        .pixclock       = 406977,       .bpp            = 4,
  64        .xres           = 320,          .yres           = 240,
  65
  66        .hsync_len      = 26,           .vsync_len      = 41,
  67        .left_margin    = 4,            .upper_margin   = 0,
  68        .right_margin   = 4,            .lower_margin   = 0,
  69
  70        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  71        .cmap_greyscale = 1,
  72        .cmap_inverse   = 1,
  73
  74        .lccr0          = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
  75        .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  76
  77        .lcd_power = h3100_lcd_power,
  78};
  79
  80static void __init h3100_map_io(void)
  81{
  82        h3xxx_map_io();
  83
  84        /* Older bootldrs put GPIO2-9 in alternate mode on the
  85           assumption that they are used for video */
  86        GAFR &= ~0x000001fb;
  87}
  88
  89/*
  90 * This turns the IRDA power on or off on the Compaq H3100
  91 */
  92static struct gpio h3100_irda_gpio[] = {
  93        { H3100_GPIO_IR_ON,     GPIOF_OUT_INIT_LOW, "IrDA power" },
  94        { H3100_GPIO_IR_FSEL,   GPIOF_OUT_INIT_LOW, "IrDA fsel" },
  95};
  96
  97static int h3100_irda_set_power(struct device *dev, unsigned int state)
  98{
  99        gpio_set_value(H3100_GPIO_IR_ON, state);
 100        return 0;
 101}
 102
 103static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
 104{
 105        gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
 106}
 107
 108static int h3100_irda_startup(struct device *dev)
 109{
 110        return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 111}
 112
 113static void h3100_irda_shutdown(struct device *dev)
 114{
 115        return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 116}
 117
 118static struct irda_platform_data h3100_irda_data = {
 119        .set_power      = h3100_irda_set_power,
 120        .set_speed      = h3100_irda_set_speed,
 121        .startup        = h3100_irda_startup,
 122        .shutdown       = h3100_irda_shutdown,
 123};
 124
 125static void __init h3100_mach_init(void)
 126{
 127        h3xxx_mach_init();
 128
 129        sa11x0_register_lcd(&h3100_lcd_info);
 130        sa11x0_register_irda(&h3100_irda_data);
 131}
 132
 133MACHINE_START(H3100, "Compaq iPAQ H3100")
 134        .atag_offset    = 0x100,
 135        .map_io         = h3100_map_io,
 136        .nr_irqs        = SA1100_NR_IRQS,
 137        .init_irq       = sa1100_init_irq,
 138        .init_time      = sa1100_timer_init,
 139        .init_machine   = h3100_mach_init,
 140        .init_late      = sa11x0_init_late,
 141        .restart        = sa11x0_restart,
 142MACHINE_END
 143
 144