linux/arch/arm/mach-sa1100/h3600.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Support for Compaq iPAQ H3600 handheld computer
   4 *
   5 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
   6 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
   7 */
   8
   9#include <linux/init.h>
  10#include <linux/kernel.h>
  11#include <linux/gpio.h>
  12
  13#include <video/sa1100fb.h>
  14
  15#include <asm/mach-types.h>
  16#include <asm/mach/arch.h>
  17#include <linux/platform_data/irda-sa11x0.h>
  18
  19#include <mach/h3xxx.h>
  20#include <mach/irqs.h>
  21
  22#include "generic.h"
  23
  24/*
  25 * helper for sa1100fb
  26 */
  27static struct gpio h3600_lcd_gpio[] = {
  28        { H3XXX_EGPIO_LCD_ON,   GPIOF_OUT_INIT_LOW,     "LCD power" },
  29        { H3600_EGPIO_LCD_PCI,  GPIOF_OUT_INIT_LOW,     "LCD control" },
  30        { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW,    "LCD 5v" },
  31        { H3600_EGPIO_LVDD_ON,  GPIOF_OUT_INIT_LOW,     "LCD 9v/-6.5v" },
  32};
  33
  34static bool h3600_lcd_request(void)
  35{
  36        static bool h3600_lcd_ok;
  37        int rc;
  38
  39        if (h3600_lcd_ok)
  40                return true;
  41
  42        rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio));
  43        if (rc)
  44                pr_err("%s: can't request GPIOs\n", __func__);
  45        else
  46                h3600_lcd_ok = true;
  47
  48        return h3600_lcd_ok;
  49}
  50
  51static void h3600_lcd_power(int enable)
  52{
  53        if (!h3600_lcd_request())
  54                return;
  55
  56        gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  57        gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
  58        gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
  59        gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
  60}
  61
  62static const struct sa1100fb_rgb h3600_rgb_16 = {
  63        .red    = { .offset = 12, .length = 4, },
  64        .green  = { .offset = 7,  .length = 4, },
  65        .blue   = { .offset = 1,  .length = 4, },
  66        .transp = { .offset = 0,  .length = 0, },
  67};
  68
  69static struct sa1100fb_mach_info h3600_lcd_info = {
  70        .pixclock       = 174757,       .bpp            = 16,
  71        .xres           = 320,          .yres           = 240,
  72
  73        .hsync_len      = 3,            .vsync_len      = 3,
  74        .left_margin    = 12,           .upper_margin   = 10,
  75        .right_margin   = 17,           .lower_margin   = 1,
  76
  77        .cmap_static    = 1,
  78
  79        .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
  80        .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  81
  82        .rgb[RGB_16] = &h3600_rgb_16,
  83
  84        .lcd_power = h3600_lcd_power,
  85};
  86
  87
  88static void __init h3600_map_io(void)
  89{
  90        h3xxx_map_io();
  91}
  92
  93/*
  94 * This turns the IRDA power on or off on the Compaq H3600
  95 */
  96static struct gpio h3600_irda_gpio[] = {
  97        { H3600_EGPIO_IR_ON,    GPIOF_OUT_INIT_LOW, "IrDA power" },
  98        { H3600_EGPIO_IR_FSEL,  GPIOF_OUT_INIT_LOW, "IrDA fsel" },
  99};
 100
 101static int h3600_irda_set_power(struct device *dev, unsigned int state)
 102{
 103        gpio_set_value(H3600_EGPIO_IR_ON, state);
 104        return 0;
 105}
 106
 107static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 108{
 109        gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
 110}
 111
 112static int h3600_irda_startup(struct device *dev)
 113{
 114        return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 115}
 116
 117static void h3600_irda_shutdown(struct device *dev)
 118{
 119        return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 120}
 121
 122static struct irda_platform_data h3600_irda_data = {
 123        .set_power      = h3600_irda_set_power,
 124        .set_speed      = h3600_irda_set_speed,
 125        .startup        = h3600_irda_startup,
 126        .shutdown       = h3600_irda_shutdown,
 127};
 128
 129static void __init h3600_mach_init(void)
 130{
 131        h3xxx_mach_init();
 132
 133        sa11x0_register_lcd(&h3600_lcd_info);
 134        sa11x0_register_irda(&h3600_irda_data);
 135}
 136
 137MACHINE_START(H3600, "Compaq iPAQ H3600")
 138        .atag_offset    = 0x100,
 139        .map_io         = h3600_map_io,
 140        .nr_irqs        = SA1100_NR_IRQS,
 141        .init_irq       = sa1100_init_irq,
 142        .init_time      = sa1100_timer_init,
 143        .init_machine   = h3600_mach_init,
 144        .init_late      = sa11x0_init_late,
 145        .restart        = sa11x0_restart,
 146MACHINE_END
 147
 148