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 <asm/mach/irda.h>
  22
  23 #include <mach/h3xxx.h>
  24
  25 #include "generic.h"
  26
  27 /*
  28  * helper for sa1100fb
  29  */
  30 static void h3100_lcd_power(int enable)
  31 {
  32         if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
  33                 gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
  34                 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  35                 gpio_free(H3XXX_EGPIO_LCD_ON);
  36         } else {
  37                 pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
  38         }
  39 }
  40
  41 static struct sa1100fb_mach_info h3100_lcd_info = {
  42         .pixclock       = 406977,       .bpp            = 4,
  43         .xres           = 320,          .yres           = 240,
  44
  45         .hsync_len      = 26,           .vsync_len      = 41,
  46         .left_margin    = 4,            .upper_margin   = 0,
  47         .right_margin   = 4,            .lower_margin   = 0,
  48
  49         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  50         .cmap_greyscale = 1,
  51         .cmap_inverse   = 1,
  52
  53         .lccr0          = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
  54         .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  55
  56         .lcd_power = h3100_lcd_power,
  57 };
  58
  59 static void __init h3100_map_io(void)
  60 {
  61         h3xxx_map_io();
  62
  63         /* Older bootldrs put GPIO2-9 in alternate mode on the
  64            assumption that they are used for video */
  65         GAFR &= ~0x000001fb;
  66 }
  67
  68 /*
  69  * This turns the IRDA power on or off on the Compaq H3100
  70  */
  71 static int h3100_irda_set_power(struct device *dev, unsigned int state)
  72 {
  73         gpio_set_value(H3100_GPIO_IR_ON, state);
  74         return 0;
  75 }
  76
  77 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
  78 {
  79         gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
  80 }
  81
  82 static struct irda_platform_data h3100_irda_data = {
  83         .set_power      = h3100_irda_set_power,
  84         .set_speed      = h3100_irda_set_speed,
  85 };
  86
  87 static struct gpio_default_state h3100_default_gpio[] = {
  88         { H3100_GPIO_IR_ON,     GPIO_MODE_OUT0, "IrDA power" },
  89         { H3100_GPIO_IR_FSEL,   GPIO_MODE_OUT0, "IrDA fsel" },
  90         { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
  91         { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
  92         { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
  93         { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
  94 };
  95
  96 static void __init h3100_mach_init(void)
  97 {
  98         h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
  99         h3xxx_mach_init();
 100
 101         sa11x0_register_lcd(&h3100_lcd_info);
 102         sa11x0_register_irda(&h3100_irda_data);
 103 }
 104
 105 MACHINE_START(H3100, "Compaq iPAQ H3100")
 106         .atag_offset    = 0x100,
 107         .map_io         = h3100_map_io,
 108         .init_irq       = sa1100_init_irq,
 109         .timer          = &sa1100_timer,
 110         .init_machine   = h3100_mach_init,
 111         .restart        = sa11x0_restart,
 112 MACHINE_END
 113