drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c

   1 /*
   2  * LCD panel driver for Sharp LQ043T1DG01
   3  *
   4  * Copyright (C) 2009 Texas Instruments Inc
   5  * Author: Vaibhav Hiremath <hvaibhav@ti.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/delay.h>
  22 #include <linux/device.h>
  23 #include <linux/err.h>
  24
  25 #include <plat/display.h>
  26
  27 static struct omap_video_timings sharp_lq_timings = {
  28         .x_res = 480,
  29         .y_res = 272,
  30
  31         .pixel_clock    = 9000,
  32
  33         .hsw            = 42,
  34         .hfp            = 3,
  35         .hbp            = 2,
  36
  37         .vsw            = 11,
  38         .vfp            = 3,
  39         .vbp            = 2,
  40 };
  41
  42 static int sharp_lq_panel_probe(struct omap_dss_device *dssdev)
  43 {
  44
  45         dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
  46                 OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO;
  47         dssdev->panel.acb = 0x0;
  48         dssdev->panel.timings = sharp_lq_timings;
  49
  50         return 0;
  51 }
  52
  53 static void sharp_lq_panel_remove(struct omap_dss_device *dssdev)
  54 {
  55 }
  56
  57 static int sharp_lq_panel_enable(struct omap_dss_device *dssdev)
  58 {
  59         int r = 0;
  60
  61
  62         /* wait couple of vsyncs until enabling the LCD */
  63         msleep(50);
  64
  65         if (dssdev->platform_enable)
  66                 r = dssdev->platform_enable(dssdev);
  67
  68         return r;
  69 }
  70
  71 static void sharp_lq_panel_disable(struct omap_dss_device *dssdev)
  72 {
  73
  74         if (dssdev->platform_disable)
  75                 dssdev->platform_disable(dssdev);
  76
  77         /* wait at least 5 vsyncs after disabling the LCD */
  78
  79         msleep(100);
  80 }
  81
  82 static int sharp_lq_panel_suspend(struct omap_dss_device *dssdev)
  83 {
  84         sharp_lq_panel_disable(dssdev);
  85         return 0;
  86 }
  87
  88 static int sharp_lq_panel_resume(struct omap_dss_device *dssdev)
  89 {
  90         return sharp_lq_panel_enable(dssdev);
  91 }
  92
  93 static struct omap_dss_driver sharp_lq_driver = {
  94         .probe          = sharp_lq_panel_probe,
  95         .remove         = sharp_lq_panel_remove,
  96
  97         .enable         = sharp_lq_panel_enable,
  98         .disable        = sharp_lq_panel_disable,
  99         .suspend        = sharp_lq_panel_suspend,
 100         .resume         = sharp_lq_panel_resume,
 101
 102         .driver         = {
 103                 .name   = "sharp_lq_panel",
 104                 .owner  = THIS_MODULE,
 105         },
 106 };
 107
 108 static int __init sharp_lq_panel_drv_init(void)
 109 {
 110         return omap_dss_register_driver(&sharp_lq_driver);
 111 }
 112
 113 static void __exit sharp_lq_panel_drv_exit(void)
 114 {
 115         omap_dss_unregister_driver(&sharp_lq_driver);
 116 }
 117
 118 module_init(sharp_lq_panel_drv_init);
 119 module_exit(sharp_lq_panel_drv_exit);
 120 MODULE_LICENSE("GPL");