release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/omap/lcd_omap3beagle.c

   1 /*
   2  * LCD panel support for the TI OMAP3 Beagle board
   3  *
   4  * Author: Koen Kooi <koen@openembedded.org>
   5  *
   6  * Derived from drivers/video/omap/lcd-omap3evm.c
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/gpio.h>
  26 #include <linux/i2c/twl.h>
  27
  28 #include <plat/mux.h>
  29 #include <plat/mux.h>
  30 #include <asm/mach-types.h>
  31
  32 #include "omapfb.h"
  33
  34 #define LCD_PANEL_ENABLE_GPIO       170
  35
  36 static int omap3beagle_panel_init(struct lcd_panel *panel,
  37                                 struct omapfb_device *fbdev)
  38 {
  39         gpio_request(LCD_PANEL_ENABLE_GPIO, "LCD enable");
  40         return 0;
  41 }
  42
  43 static void omap3beagle_panel_cleanup(struct lcd_panel *panel)
  44 {
  45         gpio_free(LCD_PANEL_ENABLE_GPIO);
  46 }
  47
  48 static int omap3beagle_panel_enable(struct lcd_panel *panel)
  49 {
  50         gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1);
  51         return 0;
  52 }
  53
  54 static void omap3beagle_panel_disable(struct lcd_panel *panel)
  55 {
  56         gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0);
  57 }
  58
  59 static unsigned long omap3beagle_panel_get_caps(struct lcd_panel *panel)
  60 {
  61         return 0;
  62 }
  63
  64 struct lcd_panel omap3beagle_panel = {
  65         .name           = "omap3beagle",
  66         .config         = OMAP_LCDC_PANEL_TFT,
  67
  68         .bpp            = 16,
  69         .data_lines     = 24,
  70         .x_res          = 1024,
  71         .y_res          = 768,
  72         .hsw            = 3,            /* hsync_len (4) - 1 */
  73         .hfp            = 3,            /* right_margin (4) - 1 */
  74         .hbp            = 39,           /* left_margin (40) - 1 */
  75         .vsw            = 1,            /* vsync_len (2) - 1 */
  76         .vfp            = 2,            /* lower_margin */
  77         .vbp            = 7,            /* upper_margin (8) - 1 */
  78
  79         .pixel_clock    = 64000,
  80
  81         .init           = omap3beagle_panel_init,
  82         .cleanup        = omap3beagle_panel_cleanup,
  83         .enable         = omap3beagle_panel_enable,
  84         .disable        = omap3beagle_panel_disable,
  85         .get_caps       = omap3beagle_panel_get_caps,
  86 };
  87
  88 static int omap3beagle_panel_probe(struct platform_device *pdev)
  89 {
  90         omapfb_register_panel(&omap3beagle_panel);
  91         return 0;
  92 }
  93
  94 static int omap3beagle_panel_remove(struct platform_device *pdev)
  95 {
  96         return 0;
  97 }
  98
  99 static int omap3beagle_panel_suspend(struct platform_device *pdev,
 100                                    pm_message_t mesg)
 101 {
 102         return 0;
 103 }
 104
 105 static int omap3beagle_panel_resume(struct platform_device *pdev)
 106 {
 107         return 0;
 108 }
 109
 110 struct platform_driver omap3beagle_panel_driver = {
 111         .probe          = omap3beagle_panel_probe,
 112         .remove         = omap3beagle_panel_remove,
 113         .suspend        = omap3beagle_panel_suspend,
 114         .resume         = omap3beagle_panel_resume,
 115         .driver         = {
 116                 .name   = "omap3beagle_lcd",
 117                 .owner  = THIS_MODULE,
 118         },
 119 };
 120
 121 static int __init omap3beagle_panel_drv_init(void)
 122 {
 123         return platform_driver_register(&omap3beagle_panel_driver);
 124 }
 125
 126 static void __exit omap3beagle_panel_drv_exit(void)
 127 {
 128         platform_driver_unregister(&omap3beagle_panel_driver);
 129 }
 130
 131 module_init(omap3beagle_panel_drv_init);
 132 module_exit(omap3beagle_panel_drv_exit);