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 #include <mach/irqs.h>
  25
  26 #include "generic.h"
  27
  28 /*
  29  * helper for sa1100fb
  30  */
  31 static void h3100_lcd_power(int enable)
  32 {
  33         if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
  34                 gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
  35                 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  36                 gpio_free(H3XXX_EGPIO_LCD_ON);
  37         } else {
  38                 pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
  39         }
  40 }
  41
  42 static struct sa1100fb_mach_info h3100_lcd_info = {
  43         .pixclock       = 406977,       .bpp            = 4,
  44         .xres           = 320,          .yres           = 240,
  45
  46         .hsync_len      = 26,           .vsync_len      = 41,
  47         .left_margin    = 4,            .upper_margin   = 0,
  48         .right_margin   = 4,            .lower_margin   = 0,
  49
  50         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  51         .cmap_greyscale = 1,
  52         .cmap_inverse   = 1,
  53
  54         .lccr0          = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
  55         .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  56
  57         .lcd_power = h3100_lcd_power,
  58 };
  59
  60 static void __init h3100_map_io(void)
  61 {
  62         h3xxx_map_io();
  63
  64         /* Older bootldrs put GPIO2-9 in alternate mode on the
  65            assumption that they are used for video */
  66         GAFR &= ~0x000001fb;
  67 }
  68
  69 /*
  70  * This turns the IRDA power on or off on the Compaq H3100
  71  */
  72 static int h3100_irda_set_power(struct device *dev, unsigned int state)
  73 {
  74         gpio_set_value(H3100_GPIO_IR_ON, state);
  75         return 0;
  76 }
  77
  78 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
  79 {
  80         gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
  81 }
  82
  83 static struct irda_platform_data h3100_irda_data = {
  84         .set_power      = h3100_irda_set_power,
  85         .set_speed      = h3100_irda_set_speed,
  86 };
  87
  88 static struct gpio_default_state h3100_default_gpio[] = {
  89         { H3100_GPIO_IR_ON,     GPIO_MODE_OUT0, "IrDA power" },
  90         { H3100_GPIO_IR_FSEL,   GPIO_MODE_OUT0, "IrDA fsel" },
  91         { H3XXX_GPIO_COM_DCD,   GPIO_MODE_IN,   "COM DCD" },
  92         { H3XXX_GPIO_COM_CTS,   GPIO_MODE_IN,   "COM CTS" },
  93         { H3XXX_GPIO_COM_RTS,   GPIO_MODE_OUT0, "COM RTS" },
  94         { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
  95 };
  96
  97 static void __init h3100_mach_init(void)
  98 {
  99         h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
 100         h3xxx_mach_init();
 101
 102         sa11x0_register_lcd(&h3100_lcd_info);
 103         sa11x0_register_irda(&h3100_irda_data);
 104 }
 105
 106 MACHINE_START(H3100, "Compaq iPAQ H3100")
 107         .atag_offset    = 0x100,
 108         .map_io         = h3100_map_io,
 109         .nr_irqs        = SA1100_NR_IRQS,
 110         .init_irq       = sa1100_init_irq,
 111         .init_time      = sa1100_timer_init,
 112         .init_machine   = h3100_mach_init,
 113         .init_late      = sa11x0_init_late,
 114         .restart        = sa11x0_restart,
 115 MACHINE_END
 116