drivers/video/omap/lcd_osk.c

   1 /*
   2  * File: drivers/video/omap/lcd-osk.c
   3  *
   4  * LCD panel support for the TI OMAP OSK board
   5  *
   6  * Copyright (C) 2004 Nokia Corporation
   7  * Author: Imre Deak <imre.deak@nokia.com>
   8  * Adapted for OSK by <dirk.behme@de.bosch.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the
  12  * Free Software Foundation; either version 2 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27
  28 #include <asm/arch/gpio.h>
  29 #include <asm/arch/mux.h>
  30 #include <asm/arch/omapfb.h>
  31
  32 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  33 {
  34         return 0;
  35 }
  36
  37 static void osk_panel_cleanup(struct lcd_panel *panel)
  38 {
  39 }
  40
  41 static int osk_panel_enable(struct lcd_panel *panel)
  42 {
  43         /* configure PWL pin */
  44         omap_cfg_reg(PWL);
  45
  46         /* Enable PWL unit */
  47         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  48
  49         /* Set PWL level */
  50         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  51
  52         /* configure GPIO2 as output */
  53         omap_set_gpio_direction(2, 0);
  54
  55         /* set GPIO2 high */
  56         omap_set_gpio_dataout(2, 1);
  57
  58         return 0;
  59 }
  60
  61 static void osk_panel_disable(struct lcd_panel *panel)
  62 {
  63         /* Set PWL level to zero */
  64         omap_writeb(0x00, OMAP_PWL_ENABLE);
  65
  66         /* Disable PWL unit */
  67         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  68
  69         /* set GPIO2 low */
  70         omap_set_gpio_dataout(2, 0);
  71 }
  72
  73 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
  74 {
  75         return 0;
  76 }
  77
  78 struct lcd_panel osk_panel = {
  79         .name           = "osk",
  80         .config         = OMAP_LCDC_PANEL_TFT,
  81
  82         .bpp            = 16,
  83         .data_lines     = 16,
  84         .x_res          = 240,
  85         .y_res          = 320,
  86         .pixel_clock    = 12500,
  87         .hsw            = 40,
  88         .hfp            = 40,
  89         .hbp            = 72,
  90         .vsw            = 1,
  91         .vfp            = 1,
  92         .vbp            = 0,
  93         .pcd            = 12,
  94
  95         .init           = osk_panel_init,
  96         .cleanup        = osk_panel_cleanup,
  97         .enable         = osk_panel_enable,
  98         .disable        = osk_panel_disable,
  99         .get_caps       = osk_panel_get_caps,
 100 };
 101
 102 static int osk_panel_probe(struct platform_device *pdev)
 103 {
 104         omapfb_register_panel(&osk_panel);
 105         return 0;
 106 }
 107
 108 static int osk_panel_remove(struct platform_device *pdev)
 109 {
 110         return 0;
 111 }
 112
 113 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 114 {
 115         return 0;
 116 }
 117
 118 static int osk_panel_resume(struct platform_device *pdev)
 119 {
 120         return 0;
 121 }
 122
 123 struct platform_driver osk_panel_driver = {
 124         .probe          = osk_panel_probe,
 125         .remove         = osk_panel_remove,
 126         .suspend        = osk_panel_suspend,
 127         .resume         = osk_panel_resume,
 128         .driver         = {
 129                 .name   = "lcd_osk",
 130                 .owner  = THIS_MODULE,
 131         },
 132 };
 133
 134 static int osk_panel_drv_init(void)
 135 {
 136         return platform_driver_register(&osk_panel_driver);
 137 }
 138
 139 static void osk_panel_drv_cleanup(void)
 140 {
 141         platform_driver_unregister(&osk_panel_driver);
 142 }
 143
 144 module_init(osk_panel_drv_init);
 145 module_exit(osk_panel_drv_cleanup);
 146