kernel/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
  26 #include <asm/gpio.h>
  27
  28 #include <mach/hardware.h>
  29 #include <mach/mux.h>
  30
  31 #include "omapfb.h"
  32
  33 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  34 {
  35         /* gpio2 was allocated in board init */
  36         return 0;
  37 }
  38
  39 static void osk_panel_cleanup(struct lcd_panel *panel)
  40 {
  41 }
  42
  43 static int osk_panel_enable(struct lcd_panel *panel)
  44 {
  45         /* configure PWL pin */
  46         omap_cfg_reg(PWL);
  47
  48         /* Enable PWL unit */
  49         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  50
  51         /* Set PWL level */
  52         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  53
  54         /* set GPIO2 high (lcd power enabled) */
  55         gpio_set_value(2, 1);
  56
  57         return 0;
  58 }
  59
  60 static void osk_panel_disable(struct lcd_panel *panel)
  61 {
  62         /* Set PWL level to zero */
  63         omap_writeb(0x00, OMAP_PWL_ENABLE);
  64
  65         /* Disable PWL unit */
  66         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  67
  68         /* set GPIO2 low */
  69         gpio_set_value(2, 0);
  70 }
  71
  72 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
  73 {
  74         return 0;
  75 }
  76
  77 struct lcd_panel osk_panel = {
  78         .name           = "osk",
  79         .config         = OMAP_LCDC_PANEL_TFT,
  80
  81         .bpp            = 16,
  82         .data_lines     = 16,
  83         .x_res          = 240,
  84         .y_res          = 320,
  85         .pixel_clock    = 12500,
  86         .hsw            = 40,
  87         .hfp            = 40,
  88         .hbp            = 72,
  89         .vsw            = 1,
  90         .vfp            = 1,
  91         .vbp            = 0,
  92         .pcd            = 12,
  93
  94         .init           = osk_panel_init,
  95         .cleanup        = osk_panel_cleanup,
  96         .enable         = osk_panel_enable,
  97         .disable        = osk_panel_disable,
  98         .get_caps       = osk_panel_get_caps,
  99 };
 100
 101 static int osk_panel_probe(struct platform_device *pdev)
 102 {
 103         omapfb_register_panel(&osk_panel);
 104         return 0;
 105 }
 106
 107 static int osk_panel_remove(struct platform_device *pdev)
 108 {
 109         return 0;
 110 }
 111
 112 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 113 {
 114         return 0;
 115 }
 116
 117 static int osk_panel_resume(struct platform_device *pdev)
 118 {
 119         return 0;
 120 }
 121
 122 static struct platform_driver osk_panel_driver = {
 123         .probe          = osk_panel_probe,
 124         .remove         = osk_panel_remove,
 125         .suspend        = osk_panel_suspend,
 126         .resume         = osk_panel_resume,
 127         .driver         = {
 128                 .name   = "lcd_osk",
 129         },
 130 };
 131
 132 module_platform_driver(osk_panel_driver);