arch/arm/mach-pxa/e740_lcd.c

   1 /* e740_lcd.c
   2  *
   3  * This file contains the definitions for the LCD timings and functions
   4  * to control the LCD power / frontlighting via the w100fb driver.
   5  *
   6  * (c) 2005 Ian Molton <spyro@f2s.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/device.h>
  16 #include <linux/fb.h>
  17 #include <linux/err.h>
  18 #include <linux/platform_device.h>
  19
  20 #include <asm/mach-types.h>
  21
  22 #include <video/w100fb.h>
  23
  24 /*
  25 **potential** shutdown routine - to be investigated
  26 devmem2 0x0c010528 w 0xff3fff00
  27 devmem2 0x0c010190 w 0x7FFF8000
  28 devmem2 0x0c0101b0 w 0x00FF0000
  29 devmem2 0x0c01008c w 0x00000000
  30 devmem2 0x0c010080 w 0x000000bf
  31 devmem2 0x0c010098 w 0x00000015
  32 devmem2 0x0c010088 w 0x4b000204
  33 devmem2 0x0c010098 w 0x0000001d
  34 */
  35
  36 static struct w100_gen_regs e740_lcd_regs = {
  37         .lcd_format =            0x00008023,
  38         .lcdd_cntl1 =            0x0f000000,
  39         .lcdd_cntl2 =            0x0003ffff,
  40         .genlcd_cntl1 =          0x00ffff03,
  41         .genlcd_cntl2 =          0x003c0f03,
  42         .genlcd_cntl3 =          0x000143aa,
  43 };
  44
  45 static struct w100_mode e740_lcd_mode = {
  46         .xres            = 240,
  47         .yres            = 320,
  48         .left_margin     = 20,
  49         .right_margin    = 28,
  50         .upper_margin    = 9,
  51         .lower_margin    = 8,
  52         .crtc_ss         = 0x80140013,
  53         .crtc_ls         = 0x81150110,
  54         .crtc_gs         = 0x80050005,
  55         .crtc_vpos_gs    = 0x000a0009,
  56         .crtc_rev        = 0x0040010a,
  57         .crtc_dclk       = 0xa906000a,
  58         .crtc_gclk       = 0x80050108,
  59         .crtc_goe        = 0x80050108,
  60         .pll_freq        = 57,
  61         .pixclk_divider         = 4,
  62         .pixclk_divider_rotated = 4,
  63         .pixclk_src     = CLK_SRC_XTAL,
  64         .sysclk_divider  = 1,
  65         .sysclk_src     = CLK_SRC_PLL,
  66         .crtc_ps1_active =       0x41060010,
  67 };
  68
  69
  70 static struct w100_gpio_regs e740_w100_gpio_info = {
  71         .init_data1 = 0x21002103,
  72         .gpio_dir1  = 0xffffdeff,
  73         .gpio_oe1   = 0x03c00643,
  74         .init_data2 = 0x003f003f,
  75         .gpio_dir2  = 0xffffffff,
  76         .gpio_oe2   = 0x000000ff,
  77 };
  78
  79 static struct w100fb_mach_info e740_fb_info = {
  80         .modelist   = &e740_lcd_mode,
  81         .num_modes  = 1,
  82         .regs       = &e740_lcd_regs,
  83         .gpio       = &e740_w100_gpio_info,
  84         .xtal_freq = 14318000,
  85         .xtal_dbl   = 1,
  86 };
  87
  88 static struct resource e740_fb_resources[] = {
  89         [0] = {
  90                 .start          = 0x0c000000,
  91                 .end            = 0x0cffffff,
  92                 .flags          = IORESOURCE_MEM,
  93         },
  94 };
  95
  96 /* ----------------------- device declarations -------------------------- */
  97
  98
  99 static struct platform_device e740_fb_device = {
 100         .name           = "w100fb",
 101         .id             = -1,
 102         .dev            = {
 103                 .platform_data  = &e740_fb_info,
 104         },
 105         .num_resources  = ARRAY_SIZE(e740_fb_resources),
 106         .resource       = e740_fb_resources,
 107 };
 108
 109 static int e740_lcd_init(void)
 110 {
 111         int ret;
 112
 113         if (!machine_is_e740())
 114                 return -ENODEV;
 115
 116         return platform_device_register(&e740_fb_device);
 117 }
 118
 119 module_init(e740_lcd_init);
 120
 121 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 122 MODULE_DESCRIPTION("e740 lcd driver");
 123 MODULE_LICENSE("GPLv2");