drivers/video/omap/lcd_overo.c

   1 /*
   2  * LCD panel support for the Gumstix Overo
   3  *
   4  * Author: Steve Sakoman <steve@sakoman.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  *
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/i2c/twl.h>
  25
  26 #include <mach/gpio.h>
  27 #include <plat/mux.h>
  28 #include <asm/mach-types.h>
  29
  30 #include "omapfb.h"
  31
  32 #define LCD_ENABLE       144
  33
  34 static int overo_panel_init(struct lcd_panel *panel,
  35                                 struct omapfb_device *fbdev)
  36 {
  37         if ((gpio_request(LCD_ENABLE, "LCD_ENABLE") == 0) &&
  38             (gpio_direction_output(LCD_ENABLE, 1) == 0))
  39                 gpio_export(LCD_ENABLE, 0);
  40         else
  41                 printk(KERN_ERR "could not obtain gpio for LCD_ENABLE\n");
  42
  43         return 0;
  44 }
  45
  46 static void overo_panel_cleanup(struct lcd_panel *panel)
  47 {
  48         gpio_free(LCD_ENABLE);
  49 }
  50
  51 static int overo_panel_enable(struct lcd_panel *panel)
  52 {
  53         gpio_set_value(LCD_ENABLE, 1);
  54         return 0;
  55 }
  56
  57 static void overo_panel_disable(struct lcd_panel *panel)
  58 {
  59         gpio_set_value(LCD_ENABLE, 0);
  60 }
  61
  62 static unsigned long overo_panel_get_caps(struct lcd_panel *panel)
  63 {
  64         return 0;
  65 }
  66
  67 struct lcd_panel overo_panel = {
  68         .name           = "overo",
  69         .config         = OMAP_LCDC_PANEL_TFT,
  70         .bpp            = 16,
  71         .data_lines     = 24,
  72
  73 #if defined CONFIG_FB_OMAP_031M3R
  74
  75         /* 640 x 480 @ 60 Hz  Reduced blanking VESA CVT 0.31M3-R */
  76         .x_res          = 640,
  77         .y_res          = 480,
  78         .hfp            = 48,
  79         .hsw            = 32,
  80         .hbp            = 80,
  81         .vfp            = 3,
  82         .vsw            = 4,
  83         .vbp            = 7,
  84         .pixel_clock    = 23500,
  85
  86 #elif defined CONFIG_FB_OMAP_048M3R
  87
  88         /* 800 x 600 @ 60 Hz  Reduced blanking VESA CVT 0.48M3-R */
  89         .x_res          = 800,
  90         .y_res          = 600,
  91         .hfp            = 48,
  92         .hsw            = 32,
  93         .hbp            = 80,
  94         .vfp            = 3,
  95         .vsw            = 4,
  96         .vbp            = 11,
  97         .pixel_clock    = 35500,
  98
  99 #elif defined CONFIG_FB_OMAP_079M3R
 100
 101         /* 1024 x 768 @ 60 Hz  Reduced blanking VESA CVT 0.79M3-R */
 102         .x_res          = 1024,
 103         .y_res          = 768,
 104         .hfp            = 48,
 105         .hsw            = 32,
 106         .hbp            = 80,
 107         .vfp            = 3,
 108         .vsw            = 4,
 109         .vbp            = 15,
 110         .pixel_clock    = 56000,
 111
 112 #elif defined CONFIG_FB_OMAP_092M9R
 113
 114         /* 1280 x 720 @ 60 Hz  Reduced blanking VESA CVT 0.92M9-R */
 115         .x_res          = 1280,
 116         .y_res          = 720,
 117         .hfp            = 48,
 118         .hsw            = 32,
 119         .hbp            = 80,
 120         .vfp            = 3,
 121         .vsw            = 5,
 122         .vbp            = 13,
 123         .pixel_clock    = 64000,
 124
 125 #else
 126
 127         /* use 640 x 480 if no config option */
 128         /* 640 x 480 @ 60 Hz  Reduced blanking VESA CVT 0.31M3-R */
 129         .x_res          = 640,
 130         .y_res          = 480,
 131         .hfp            = 48,
 132         .hsw            = 32,
 133         .hbp            = 80,
 134         .vfp            = 3,
 135         .vsw            = 4,
 136         .vbp            = 7,
 137         .pixel_clock    = 23500,
 138
 139 #endif
 140
 141         .init           = overo_panel_init,
 142         .cleanup        = overo_panel_cleanup,
 143         .enable         = overo_panel_enable,
 144         .disable        = overo_panel_disable,
 145         .get_caps       = overo_panel_get_caps,
 146 };
 147
 148 static int overo_panel_probe(struct platform_device *pdev)
 149 {
 150         omapfb_register_panel(&overo_panel);
 151         return 0;
 152 }
 153
 154 static int overo_panel_remove(struct platform_device *pdev)
 155 {
 156         /* omapfb does not have unregister_panel */
 157         return 0;
 158 }
 159
 160 static struct platform_driver overo_panel_driver = {
 161         .probe          = overo_panel_probe,
 162         .remove         = overo_panel_remove,
 163         .driver         = {
 164                 .name   = "overo_lcd",
 165                 .owner  = THIS_MODULE,
 166         },
 167 };
 168
 169 static int __init overo_panel_drv_init(void)
 170 {
 171         return platform_driver_register(&overo_panel_driver);
 172 }
 173
 174 static void __exit overo_panel_drv_exit(void)
 175 {
 176         platform_driver_unregister(&overo_panel_driver);
 177 }
 178
 179 module_init(overo_panel_drv_init);
 180 module_exit(overo_panel_drv_exit);