arch/arm/mach-sa1100/h3600.c

   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
  18 #include <mach/h3xxx.h>
  19 #include <mach/irqs.h>
  20
  21 #include "generic.h"
  22
  23 static bool h3600_lcd_request(void)
  24 {
  25         static bool h3600_lcd_ok;
  26         int rc;
  27
  28         if (h3600_lcd_ok)
  29                 return true;
  30
  31         rc = gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power");
  32         if (rc)
  33                 goto out;
  34         rc = gpio_direction_output(H3XXX_EGPIO_LCD_ON, 0);
  35         if (rc)
  36                 goto out_free_on;
  37         rc = gpio_request(H3600_EGPIO_LCD_PCI, "LCD control");
  38         if (rc)
  39                 goto out_free_on;
  40         rc = gpio_direction_output(H3600_EGPIO_LCD_PCI, 0);
  41         if (rc)
  42                 goto out_free_pci;
  43         rc = gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v");
  44         if (rc)
  45                 goto out_free_pci;
  46         rc = gpio_direction_output(H3600_EGPIO_LCD_5V_ON, 0);
  47         if (rc)
  48                 goto out_free_5v_on;
  49         rc = gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v");
  50         if (rc)
  51                 goto out_free_5v_on;
  52         rc = gpio_direction_output(H3600_EGPIO_LVDD_ON, 0);
  53         if (rc)
  54                 goto out_free_lvdd_on;
  55
  56         goto out;
  57
  58 out_free_lvdd_on:
  59         gpio_free(H3600_EGPIO_LVDD_ON);
  60 out_free_5v_on:
  61         gpio_free(H3600_EGPIO_LCD_5V_ON);
  62 out_free_pci:
  63         gpio_free(H3600_EGPIO_LCD_PCI);
  64 out_free_on:
  65         gpio_free(H3XXX_EGPIO_LCD_ON);
  66 out:
  67         if (rc)
  68                 pr_err("%s: can't request GPIOs\n", __func__);
  69         else
  70                 h3600_lcd_ok = true;
  71
  72         return h3600_lcd_ok;
  73 }
  74
  75 static void h3600_lcd_power(int enable)
  76 {
  77         if (!h3600_lcd_request())
  78                 return;
  79
  80         gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
  81         gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
  82         gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
  83         gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
  84 }
  85
  86 static const struct sa1100fb_rgb h3600_rgb_16 = {
  87         .red    = { .offset = 12, .length = 4, },
  88         .green  = { .offset = 7,  .length = 4, },
  89         .blue   = { .offset = 1,  .length = 4, },
  90         .transp = { .offset = 0,  .length = 0, },
  91 };
  92
  93 static struct sa1100fb_mach_info h3600_lcd_info = {
  94         .pixclock       = 174757,       .bpp            = 16,
  95         .xres           = 320,          .yres           = 240,
  96
  97         .hsync_len      = 3,            .vsync_len      = 3,
  98         .left_margin    = 12,           .upper_margin   = 10,
  99         .right_margin   = 17,           .lower_margin   = 1,
 100
 101         .cmap_static    = 1,
 102
 103         .lccr0          = LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
 104         .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
 105
 106         .rgb[RGB_16] = &h3600_rgb_16,
 107
 108         .lcd_power = h3600_lcd_power,
 109 };
 110
 111
 112 static void __init h3600_map_io(void)
 113 {
 114         h3xxx_map_io();
 115 }
 116
 117 static void __init h3600_mach_init(void)
 118 {
 119         h3xxx_mach_init();
 120
 121         sa11x0_register_lcd(&h3600_lcd_info);
 122 }
 123
 124 MACHINE_START(H3600, "Compaq iPAQ H3600")
 125         .atag_offset    = 0x100,
 126         .map_io         = h3600_map_io,
 127         .nr_irqs        = SA1100_NR_IRQS,
 128         .init_irq       = sa1100_init_irq,
 129         .init_time      = sa1100_timer_init,
 130         .init_machine   = h3600_mach_init,
 131         .init_late      = sa11x0_init_late,
 132         .restart        = sa11x0_restart,
 133 MACHINE_END
 134