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 <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  */
  31 static struct gpio h3600_lcd_gpio[] = {
  32         { H3XXX_EGPIO_LCD_ON,   GPIOF_OUT_INIT_LOW,     "LCD power" },
  33         { H3600_EGPIO_LCD_PCI,  GPIOF_OUT_INIT_LOW,     "LCD control" },
  34         { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW,    "LCD 5v" },
  35         { H3600_EGPIO_LVDD_ON,  GPIOF_OUT_INIT_LOW,     "LCD 9v/-6.5v" },
  36 };
  37
  38 static bool h3600_lcd_request(void)
  39 {
  40         static bool h3600_lcd_ok;
  41         int rc;
  42
  43         if (h3600_lcd_ok)
  44                 return true;
  45
  46         rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio));
  47         if (rc)
  48                 pr_err("%s: can't request GPIOs\n", __func__);
  49         else
  50                 h3600_lcd_ok = true;
  51
  52         return h3600_lcd_ok;
  53 }
  54
  55 static void h3600_lcd_power(int enable)
  56 {
  57         if (!h3600_lcd_request())
  58                 return;
  59
  60         gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  61         gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
  62         gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
  63         gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
  64 }
  65
  66 static const struct sa1100fb_rgb h3600_rgb_16 = {
  67         .red    = { .offset = 12, .length = 4, },
  68         .green  = { .offset = 7,  .length = 4, },
  69         .blue   = { .offset = 1,  .length = 4, },
  70         .transp = { .offset = 0,  .length = 0, },
  71 };
  72
  73 static struct sa1100fb_mach_info h3600_lcd_info = {
  74         .pixclock       = 174757,       .bpp            = 16,
  75         .xres           = 320,          .yres           = 240,
  76
  77         .hsync_len      = 3,            .vsync_len      = 3,
  78         .left_margin    = 12,           .upper_margin   = 10,
  79         .right_margin   = 17,           .lower_margin   = 1,
  80
  81         .cmap_static    = 1,
  82
  83         .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
  84         .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  85
  86         .rgb[RGB_16] = &h3600_rgb_16,
  87
  88         .lcd_power = h3600_lcd_power,
  89 };
  90
  91
  92 static void __init h3600_map_io(void)
  93 {
  94         h3xxx_map_io();
  95 }
  96
  97 /*
  98  * This turns the IRDA power on or off on the Compaq H3600
  99  */
 100 static struct gpio h3600_irda_gpio[] = {
 101         { H3600_EGPIO_IR_ON,    GPIOF_OUT_INIT_LOW, "IrDA power" },
 102         { H3600_EGPIO_IR_FSEL,  GPIOF_OUT_INIT_LOW, "IrDA fsel" },
 103 };
 104
 105 static int h3600_irda_set_power(struct device *dev, unsigned int state)
 106 {
 107         gpio_set_value(H3600_EGPIO_IR_ON, state);
 108         return 0;
 109 }
 110
 111 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 112 {
 113         gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
 114 }
 115
 116 static int h3600_irda_startup(struct device *dev)
 117 {
 118         return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 119 }
 120
 121 static void h3600_irda_shutdown(struct device *dev)
 122 {
 123         return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 124 }
 125
 126 static struct irda_platform_data h3600_irda_data = {
 127         .set_power      = h3600_irda_set_power,
 128         .set_speed      = h3600_irda_set_speed,
 129         .startup        = h3600_irda_startup,
 130         .shutdown       = h3600_irda_shutdown,
 131 };
 132
 133 static void __init h3600_mach_init(void)
 134 {
 135         h3xxx_mach_init();
 136
 137         sa11x0_register_lcd(&h3600_lcd_info);
 138         sa11x0_register_irda(&h3600_irda_data);
 139 }
 140
 141 MACHINE_START(H3600, "Compaq iPAQ H3600")
 142         .atag_offset    = 0x100,
 143         .map_io         = h3600_map_io,
 144         .nr_irqs        = SA1100_NR_IRQS,
 145         .init_irq       = sa1100_init_irq,
 146         .init_time      = sa1100_timer_init,
 147         .init_machine   = h3600_mach_init,
 148         .init_late      = sa11x0_init_late,
 149         .restart        = sa11x0_restart,
 150 MACHINE_END
 151