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  */
  31 static 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
  36 static 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
  53 static 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
  62 static 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
  80 static 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  */
  92 static 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
  97 static 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
 103 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
 104 {
 105         gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
 106 }
 107
 108 static int h3100_irda_startup(struct device *dev)
 109 {
 110         return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 111 }
 112
 113 static void h3100_irda_shutdown(struct device *dev)
 114 {
 115         return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 116 }
 117
 118 static 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
 125 static 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
 133 MACHINE_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,
 142 MACHINE_END
 143