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/i2c/twl4030.h>
  26
  27 #include <mach/gpio.h>
  28 #include <mach/mux.h>
  29 #include <mach/omapfb.h>
  30 #include <asm/mach-types.h>
  31
  32 #define LCD_PANEL_ENABLE_GPIO       170
  33
  34 #define LCD_XRES                1024
  35 #define LCD_YRES                768
  36 #define LCD_PIXCLOCK            64000 /* in kHz */
  37
  38 static int omap3beagle_panel_init(struct lcd_panel *panel,
  39                                 struct omapfb_device *fbdev)
  40 {
  41         omap_request_gpio(LCD_PANEL_ENABLE_GPIO);
  42         return 0;
  43 }
  44
  45 static void omap3beagle_panel_cleanup(struct lcd_panel *panel)
  46 {
  47 }
  48
  49 static int omap3beagle_panel_enable(struct lcd_panel *panel)
  50 {
  51         omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 1);
  52         return 0;
  53 }
  54
  55 static void omap3beagle_panel_disable(struct lcd_panel *panel)
  56 {
  57         omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 0);
  58 }
  59
  60 static unsigned long omap3beagle_panel_get_caps(struct lcd_panel *panel)
  61 {
  62         return 0;
  63 }
  64
  65 struct lcd_panel omap3beagle_panel = {
  66         .name           = "omap3beagle",
  67         .config         = OMAP_LCDC_PANEL_TFT,
  68
  69         .bpp            = 16,
  70         .data_lines     = 24,
  71         .x_res          = LCD_XRES,
  72         .y_res          = LCD_YRES,
  73         .hsw            = 3,            /* hsync_len (4) - 1 */
  74         .hfp            = 3,            /* right_margin (4) - 1 */
  75         .hbp            = 39,           /* left_margin (40) - 1 */
  76         .vsw            = 1,            /* vsync_len (2) - 1 */
  77         .vfp            = 2,            /* lower_margin */
  78         .vbp            = 7,            /* upper_margin (8) - 1 */
  79
  80         .pixel_clock    = LCD_PIXCLOCK,
  81
  82         .init           = omap3beagle_panel_init,
  83         .cleanup        = omap3beagle_panel_cleanup,
  84         .enable         = omap3beagle_panel_enable,
  85         .disable        = omap3beagle_panel_disable,
  86         .get_caps       = omap3beagle_panel_get_caps,
  87 };
  88
  89 static int omap3beagle_panel_probe(struct platform_device *pdev)
  90 {
  91         omapfb_register_panel(&omap3beagle_panel);
  92         return 0;
  93 }
  94
  95 static int omap3beagle_panel_remove(struct platform_device *pdev)
  96 {
  97         return 0;
  98 }
  99
 100 static int omap3beagle_panel_suspend(struct platform_device *pdev,
 101                                    pm_message_t mesg)
 102 {
 103         return 0;
 104 }
 105
 106 static int omap3beagle_panel_resume(struct platform_device *pdev)
 107 {
 108         return 0;
 109 }
 110
 111 struct platform_driver omap3beagle_panel_driver = {
 112         .probe          = omap3beagle_panel_probe,
 113         .remove         = omap3beagle_panel_remove,
 114         .suspend        = omap3beagle_panel_suspend,
 115         .resume         = omap3beagle_panel_resume,
 116         .driver         = {
 117                 .name   = "omap3beagle_lcd",
 118                 .owner  = THIS_MODULE,
 119         },
 120 };
 121
 122 static int __init omap3beagle_panel_drv_init(void)
 123 {
 124         return platform_driver_register(&omap3beagle_panel_driver);
 125 }
 126
 127 static void __exit omap3beagle_panel_drv_exit(void)
 128 {
 129         platform_driver_unregister(&omap3beagle_panel_driver);
 130 }
 131
 132 module_init(omap3beagle_panel_drv_init);
 133 module_exit(omap3beagle_panel_drv_exit);