arch/arm/mach-pxa/e800_lcd.c

   1 /* e800_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 static struct w100_gen_regs e800_lcd_regs = {
  25         .lcd_format =            0x00008003,
  26         .lcdd_cntl1 =            0x02a00000,
  27         .lcdd_cntl2 =            0x0003ffff,
  28         .genlcd_cntl1 =          0x000ff2a3,
  29         .genlcd_cntl2 =          0x000002a3,
  30         .genlcd_cntl3 =          0x000102aa,
  31 };
  32
  33 static struct w100_mode e800_lcd_mode[2] = {
  34         [0] = {
  35                 .xres            = 480,
  36                 .yres            = 640,
  37                 .left_margin     = 52,
  38                 .right_margin    = 148,
  39                 .upper_margin    = 2,
  40                 .lower_margin    = 6,
  41                 .crtc_ss         = 0x80350034,
  42                 .crtc_ls         = 0x802b0026,
  43                 .crtc_gs         = 0x80160016,
  44                 .crtc_vpos_gs    = 0x00020003,
  45                 .crtc_rev        = 0x0040001d,
  46                 .crtc_dclk       = 0xe0000000,
  47                 .crtc_gclk       = 0x82a50049,
  48                 .crtc_goe        = 0x80ee001c,
  49                 .crtc_ps1_active = 0x00000000,
  50                 .pll_freq        = 128,
  51                 .pixclk_divider         = 4,
  52                 .pixclk_divider_rotated = 6,
  53                 .pixclk_src     = CLK_SRC_PLL,
  54                 .sysclk_divider  = 0,
  55                 .sysclk_src     = CLK_SRC_PLL,
  56         },
  57         [1] = {
  58                 .xres            = 240,
  59                 .yres            = 320,
  60                 .left_margin     = 15,
  61                 .right_margin    = 88,
  62                 .upper_margin    = 0,
  63                 .lower_margin    = 7,
  64                 .crtc_ss         = 0xd010000f,
  65                 .crtc_ls         = 0x80070003,
  66                 .crtc_gs         = 0x80000000,
  67                 .crtc_vpos_gs    = 0x01460147,
  68                 .crtc_rev        = 0x00400003,
  69                 .crtc_dclk       = 0xa1700030,
  70                 .crtc_gclk       = 0x814b0008,
  71                 .crtc_goe        = 0x80cc0015,
  72                 .crtc_ps1_active = 0x00000000,
  73                 .pll_freq        = 100,
  74                 .pixclk_divider         = 6, /* Wince uses 14 which gives a 7MHz pclk. */
  75                 .pixclk_divider_rotated = 6, /* we want a 14MHz one (much nicer to look at) */
  76                 .pixclk_src     = CLK_SRC_PLL,
  77                 .sysclk_divider  = 0,
  78                 .sysclk_src     = CLK_SRC_PLL,
  79         }
  80 };
  81
  82
  83 static struct w100_gpio_regs e800_w100_gpio_info = {
  84         .init_data1 = 0xc13fc019,
  85         .gpio_dir1  = 0x3e40df7f,
  86         .gpio_oe1   = 0x003c3000,
  87         .init_data2 = 0x00000000,
  88         .gpio_dir2  = 0x00000000,
  89         .gpio_oe2   = 0x00000000,
  90 };
  91
  92 static struct w100_mem_info e800_w100_mem_info = {
  93         .ext_cntl        = 0x09640011,
  94         .sdram_mode_reg  = 0x00600021,
  95         .ext_timing_cntl = 0x10001545,
  96         .io_cntl         = 0x7ddd7333,
  97         .size            = 0x1fffff,
  98 };
  99
 100 static void e800_tg_change(struct w100fb_par *par)
 101 {
 102         unsigned long tmp;
 103
 104         tmp = w100fb_gpio_read(W100_GPIO_PORT_A);
 105         if (par->mode->xres == 480)
 106                 tmp |= 0x100;
 107         else
 108                 tmp &= ~0x100;
 109         w100fb_gpio_write(W100_GPIO_PORT_A, tmp);
 110 }
 111
 112 static struct w100_tg_info e800_tg_info = {
 113         .change = e800_tg_change,
 114 };
 115
 116 static struct w100fb_mach_info e800_fb_info = {
 117         .modelist   = e800_lcd_mode,
 118         .num_modes  = 2,
 119         .regs       = &e800_lcd_regs,
 120         .gpio       = &e800_w100_gpio_info,
 121         .mem        = &e800_w100_mem_info,
 122         .tg         = &e800_tg_info,
 123         .xtal_freq  = 16000000,
 124 };
 125
 126 static struct resource e800_fb_resources[] = {
 127         [0] = {
 128                 .start          = 0x0c000000,
 129                 .end            = 0x0cffffff,
 130                 .flags          = IORESOURCE_MEM,
 131         },
 132 };
 133
 134 /* ----------------------- device declarations -------------------------- */
 135
 136
 137 static struct platform_device e800_fb_device = {
 138         .name           = "w100fb",
 139         .id             = -1,
 140         .dev            = {
 141                 .platform_data  = &e800_fb_info,
 142         },
 143         .num_resources  = ARRAY_SIZE(e800_fb_resources),
 144         .resource       = e800_fb_resources,
 145 };
 146
 147 static int e800_lcd_init(void)
 148 {
 149         if (!machine_is_e800())
 150                 return -ENODEV;
 151
 152         return platform_device_register(&e800_fb_device);
 153 }
 154
 155 module_init(e800_lcd_init);
 156
 157 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 158 MODULE_DESCRIPTION("e800 lcd driver");
 159 MODULE_LICENSE("GPLv2");