drivers/video/omap2/displays/panel-samsung-lte430wq-f0c.c

   1 /*
   2  * LCD panel driver for Samsung LTE430WQ-F0C
   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 version 2 as published by
   8  * the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/delay.h>
  21
  22 #include <plat/display.h>
  23
  24 static struct omap_video_timings samsung_lte_timings = {
  25         .x_res = 480,
  26         .y_res = 272,
  27
  28         .pixel_clock    = 9200,
  29
  30         .hsw            = 41,
  31         .hfp            = 8,
  32         .hbp            = 45-41,
  33
  34         .vsw            = 10,
  35         .vfp            = 4,
  36         .vbp            = 12-10,
  37 };
  38
  39 static int samsung_lte_panel_probe(struct omap_dss_device *dssdev)
  40 {
  41         dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
  42                 OMAP_DSS_LCD_IHS;
  43         dssdev->panel.timings = samsung_lte_timings;
  44
  45         return 0;
  46 }
  47
  48 static void samsung_lte_panel_remove(struct omap_dss_device *dssdev)
  49 {
  50 }
  51
  52 static int samsung_lte_panel_enable(struct omap_dss_device *dssdev)
  53 {
  54         int r = 0;
  55
  56         /* wait couple of vsyncs until enabling the LCD */
  57         msleep(50);
  58
  59         if (dssdev->platform_enable)
  60                 r = dssdev->platform_enable(dssdev);
  61
  62         return r;
  63 }
  64
  65 static void samsung_lte_panel_disable(struct omap_dss_device *dssdev)
  66 {
  67         if (dssdev->platform_disable)
  68                 dssdev->platform_disable(dssdev);
  69
  70         /* wait at least 5 vsyncs after disabling the LCD */
  71
  72         msleep(100);
  73 }
  74
  75 static int samsung_lte_panel_suspend(struct omap_dss_device *dssdev)
  76 {
  77         samsung_lte_panel_disable(dssdev);
  78         return 0;
  79 }
  80
  81 static int samsung_lte_panel_resume(struct omap_dss_device *dssdev)
  82 {
  83         return samsung_lte_panel_enable(dssdev);
  84 }
  85
  86 static struct omap_dss_driver samsung_lte_driver = {
  87         .probe          = samsung_lte_panel_probe,
  88         .remove         = samsung_lte_panel_remove,
  89
  90         .enable         = samsung_lte_panel_enable,
  91         .disable        = samsung_lte_panel_disable,
  92         .suspend        = samsung_lte_panel_suspend,
  93         .resume         = samsung_lte_panel_resume,
  94
  95         .driver         = {
  96                 .name   = "samsung_lte_panel",
  97                 .owner  = THIS_MODULE,
  98         },
  99 };
 100
 101 static int __init samsung_lte_panel_drv_init(void)
 102 {
 103         return omap_dss_register_driver(&samsung_lte_driver);
 104 }
 105
 106 static void __exit samsung_lte_panel_drv_exit(void)
 107 {
 108         omap_dss_unregister_driver(&samsung_lte_driver);
 109 }
 110
 111 module_init(samsung_lte_panel_drv_init);
 112 module_exit(samsung_lte_panel_drv_exit);
 113 MODULE_LICENSE("GPL");