release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/omap/lcd_inn1610.c

   1 /*
   2  * LCD panel support for the TI OMAP1610 Innovator board
   3  *
   4  * Copyright (C) 2004 Nokia Corporation
   5  * Author: Imre Deak <imre.deak@nokia.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 as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/platform_device.h>
  24
  25 #include <mach/gpio.h>
  26 #include "omapfb.h"
  27
  28 #define MODULE_NAME     "omapfb-lcd_h3"
  29
  30 static int innovator1610_panel_init(struct lcd_panel *panel,
  31                                     struct omapfb_device *fbdev)
  32 {
  33         int r = 0;
  34
  35         if (gpio_request(14, "lcd_en0")) {
  36                 pr_err(MODULE_NAME ": can't request GPIO 14\n");
  37                 r = -1;
  38                 goto exit;
  39         }
  40         if (gpio_request(15, "lcd_en1")) {
  41                 pr_err(MODULE_NAME ": can't request GPIO 15\n");
  42                 gpio_free(14);
  43                 r = -1;
  44                 goto exit;
  45         }
  46         /* configure GPIO(14, 15) as outputs */
  47         gpio_direction_output(14, 0);
  48         gpio_direction_output(15, 0);
  49 exit:
  50         return r;
  51 }
  52
  53 static void innovator1610_panel_cleanup(struct lcd_panel *panel)
  54 {
  55         gpio_free(15);
  56         gpio_free(14);
  57 }
  58
  59 static int innovator1610_panel_enable(struct lcd_panel *panel)
  60 {
  61         /* set GPIO14 and GPIO15 high */
  62         gpio_set_value(14, 1);
  63         gpio_set_value(15, 1);
  64         return 0;
  65 }
  66
  67 static void innovator1610_panel_disable(struct lcd_panel *panel)
  68 {
  69         /* set GPIO13, GPIO14 and GPIO15 low */
  70         gpio_set_value(14, 0);
  71         gpio_set_value(15, 0);
  72 }
  73
  74 static unsigned long innovator1610_panel_get_caps(struct lcd_panel *panel)
  75 {
  76         return 0;
  77 }
  78
  79 struct lcd_panel innovator1610_panel = {
  80         .name           = "inn1610",
  81         .config         = OMAP_LCDC_PANEL_TFT,
  82
  83         .bpp            = 16,
  84         .data_lines     = 16,
  85         .x_res          = 320,
  86         .y_res          = 240,
  87         .pixel_clock    = 12500,
  88         .hsw            = 40,
  89         .hfp            = 40,
  90         .hbp            = 72,
  91         .vsw            = 1,
  92         .vfp            = 1,
  93         .vbp            = 0,
  94         .pcd            = 12,
  95
  96         .init           = innovator1610_panel_init,
  97         .cleanup        = innovator1610_panel_cleanup,
  98         .enable         = innovator1610_panel_enable,
  99         .disable        = innovator1610_panel_disable,
 100         .get_caps       = innovator1610_panel_get_caps,
 101 };
 102
 103 static int innovator1610_panel_probe(struct platform_device *pdev)
 104 {
 105         omapfb_register_panel(&innovator1610_panel);
 106         return 0;
 107 }
 108
 109 static int innovator1610_panel_remove(struct platform_device *pdev)
 110 {
 111         return 0;
 112 }
 113
 114 static int innovator1610_panel_suspend(struct platform_device *pdev,
 115                                        pm_message_t mesg)
 116 {
 117         return 0;
 118 }
 119
 120 static int innovator1610_panel_resume(struct platform_device *pdev)
 121 {
 122         return 0;
 123 }
 124
 125 struct platform_driver innovator1610_panel_driver = {
 126         .probe          = innovator1610_panel_probe,
 127         .remove         = innovator1610_panel_remove,
 128         .suspend        = innovator1610_panel_suspend,
 129         .resume         = innovator1610_panel_resume,
 130         .driver         = {
 131                 .name   = "lcd_inn1610",
 132                 .owner  = THIS_MODULE,
 133         },
 134 };
 135
 136 static int __init innovator1610_panel_drv_init(void)
 137 {
 138         return platform_driver_register(&innovator1610_panel_driver);
 139 }
 140
 141 static void __exit innovator1610_panel_drv_cleanup(void)
 142 {
 143         platform_driver_unregister(&innovator1610_panel_driver);
 144 }
 145
 146 module_init(innovator1610_panel_drv_init);
 147 module_exit(innovator1610_panel_drv_cleanup);