drivers/video/fbdev/omap/lcd_osk.c

   1 /*
   2  * LCD panel support for the TI OMAP OSK board
   3  *
   4  * Copyright (C) 2004 Nokia Corporation
   5  * Author: Imre Deak <imre.deak@nokia.com>
   6  * Adapted for OSK by <dirk.behme@de.bosch.com>
   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
  27 #include <mach/hardware.h>
  28 #include <mach/mux.h>
  29
  30 #include "omapfb.h"
  31
  32 static int osk_panel_enable(struct lcd_panel *panel)
  33 {
  34         /* configure PWL pin */
  35         omap_cfg_reg(PWL);
  36
  37         /* Enable PWL unit */
  38         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  39
  40         /* Set PWL level */
  41         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  42
  43         /* set GPIO2 high (lcd power enabled) */
  44         gpio_set_value(2, 1);
  45
  46         return 0;
  47 }
  48
  49 static void osk_panel_disable(struct lcd_panel *panel)
  50 {
  51         /* Set PWL level to zero */
  52         omap_writeb(0x00, OMAP_PWL_ENABLE);
  53
  54         /* Disable PWL unit */
  55         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  56
  57         /* set GPIO2 low */
  58         gpio_set_value(2, 0);
  59 }
  60
  61 static struct lcd_panel osk_panel = {
  62         .name           = "osk",
  63         .config         = OMAP_LCDC_PANEL_TFT,
  64
  65         .bpp            = 16,
  66         .data_lines     = 16,
  67         .x_res          = 240,
  68         .y_res          = 320,
  69         .pixel_clock    = 12500,
  70         .hsw            = 40,
  71         .hfp            = 40,
  72         .hbp            = 72,
  73         .vsw            = 1,
  74         .vfp            = 1,
  75         .vbp            = 0,
  76         .pcd            = 12,
  77
  78         .enable         = osk_panel_enable,
  79         .disable        = osk_panel_disable,
  80 };
  81
  82 static int osk_panel_probe(struct platform_device *pdev)
  83 {
  84         omapfb_register_panel(&osk_panel);
  85         return 0;
  86 }
  87
  88 static struct platform_driver osk_panel_driver = {
  89         .probe          = osk_panel_probe,
  90         .driver         = {
  91                 .name   = "lcd_osk",
  92         },
  93 };
  94
  95 module_platform_driver(osk_panel_driver);
  96
  97 MODULE_AUTHOR("Imre Deak");
  98 MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
  99 MODULE_LICENSE("GPL");