root/arch/arm/mach-sa1100/h3600.c

DEFINITIONS

1. h3600_lcd_request
2. h3600_lcd_power
3. h3600_map_io
4. h3600_irda_set_power
5. h3600_irda_set_speed
6. h3600_irda_startup
7. h3600_irda_shutdown
8. h3600_mach_init

   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  */
  27 static 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 
  34 static 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 
  51 static 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 
  62 static 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 
  69 static 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 
  88 static 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  */
  96 static 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 
 101 static 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 
 107 static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
 108 {
 109         gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
 110 }
 111 
 112 static int h3600_irda_startup(struct device *dev)
 113 {
 114         return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 115 }
 116 
 117 static void h3600_irda_shutdown(struct device *dev)
 118 {
 119         return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
 120 }
 121 
 122 static 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 
 129 static 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 
 137 MACHINE_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,
 146 MACHINE_END
 147