release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-sa1100/h3600.c

   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 <asm/mach-types.h>
  18 #include <asm/mach/arch.h>
  19 #include <asm/mach/irda.h>
  20
  21 #include <mach/h3xxx.h>
  22
  23 #include "generic.h"
  24
  25 /*
  26  * helper for sa1100fb
  27  */
  28 static void h3600_lcd_power(int enable)
  29 {
  30         if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
  31                 pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
  32                 goto err1;
  33         }
  34         if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
  35                 pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
  36                 goto err2;
  37         }
  38         if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
  39                 pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
  40                 goto err3;
  41         }
  42         if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
  43                 pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
  44                 goto err4;
  45         }
  46
  47         gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  48         gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
  49         gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
  50         gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
  51
  52         gpio_free(H3600_EGPIO_LVDD_ON);
  53 err4:   gpio_free(H3600_EGPIO_LCD_5V_ON);
  54 err3:   gpio_free(H3600_EGPIO_LCD_PCI);
  55 err2:   gpio_free(H3XXX_EGPIO_LCD_ON);
  56 err1:   return;
  57 }
  58
  59 static void __init h3600_map_io(void)
  60 {
  61         h3xxx_map_io();
  62
  63         sa1100fb_lcd_power = h3600_lcd_power;
  64 }
  65
  66 /*
  67  * This turns the IRDA power on or off on the Compaq H3600
  68  */
  69 static int h3600_irda_set_power(struct device *dev, unsigned int state)
  70 {
  71         gpio_set_value(H3600_EGPIO_IR_ON, state);
  72         return 0;
  73 }
  74
  75 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
  76 {
  77         gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
  78 }
  79
  80 static int h3600_irda_startup(struct device *dev)
  81 {
  82         int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
  83         if (err)
  84                 goto err1;
  85         err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
  86         if (err)
  87                 goto err2;
  88         err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
  89         if (err)
  90                 goto err2;
  91         err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
  92         if (err)
  93                 goto err3;
  94         return 0;
  95
  96 err3:   gpio_free(H3600_EGPIO_IR_FSEL);
  97 err2:   gpio_free(H3600_EGPIO_IR_ON);
  98 err1:   return err;
  99 }
 100
 101 static void h3600_irda_shutdown(struct device *dev)
 102 {
 103         gpio_free(H3600_EGPIO_IR_ON);
 104         gpio_free(H3600_EGPIO_IR_FSEL);
 105 }
 106
 107 static struct irda_platform_data h3600_irda_data = {
 108         .set_power      = h3600_irda_set_power,
 109         .set_speed      = h3600_irda_set_speed,
 110         .startup        = h3600_irda_startup,
 111         .shutdown       = h3600_irda_shutdown,
 112 };
 113
 114 static struct gpio_default_state h3600_default_gpio[] = {
 115         { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
 116         { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
 117         { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
 118 };
 119
 120 static void __init h3600_mach_init(void)
 121 {
 122         h3xxx_init_gpio(h3600_default_gpio, ARRAY_SIZE(h3600_default_gpio));
 123         h3xxx_mach_init();
 124         sa11x0_register_irda(&h3600_irda_data);
 125 }
 126
 127 MACHINE_START(H3600, "Compaq iPAQ H3600")
 128         .phys_io        = 0x80000000,
 129         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 130         .boot_params    = 0xc0000100,
 131         .map_io         = h3600_map_io,
 132         .init_irq       = sa1100_init_irq,
 133         .timer          = &sa1100_timer,
 134         .init_machine   = h3600_mach_init,
 135 MACHINE_END