release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/omap/lcd_h3.c

   1 /*
   2  * LCD panel support for the TI OMAP H3 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 #include <linux/i2c/tps65010.h>
  25
  26 #include <mach/gpio.h>
  27 #include "omapfb.h"
  28
  29 #define MODULE_NAME     "omapfb-lcd_h3"
  30
  31 static int h3_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  32 {
  33         return 0;
  34 }
  35
  36 static void h3_panel_cleanup(struct lcd_panel *panel)
  37 {
  38 }
  39
  40 static int h3_panel_enable(struct lcd_panel *panel)
  41 {
  42         int r = 0;
  43
  44         /* GPIO1 and GPIO2 of TPS65010 send LCD_ENBKL and LCD_ENVDD signals */
  45         r = tps65010_set_gpio_out_value(GPIO1, HIGH);
  46         if (!r)
  47                 r = tps65010_set_gpio_out_value(GPIO2, HIGH);
  48         if (r)
  49                 pr_err(MODULE_NAME ": Unable to turn on LCD panel\n");
  50
  51         return r;
  52 }
  53
  54 static void h3_panel_disable(struct lcd_panel *panel)
  55 {
  56         int r = 0;
  57
  58         /* GPIO1 and GPIO2 of TPS65010 send LCD_ENBKL and LCD_ENVDD signals */
  59         r = tps65010_set_gpio_out_value(GPIO1, LOW);
  60         if (!r)
  61                 tps65010_set_gpio_out_value(GPIO2, LOW);
  62         if (r)
  63                 pr_err(MODULE_NAME ": Unable to turn off LCD panel\n");
  64 }
  65
  66 static unsigned long h3_panel_get_caps(struct lcd_panel *panel)
  67 {
  68         return 0;
  69 }
  70
  71 struct lcd_panel h3_panel = {
  72         .name           = "h3",
  73         .config         = OMAP_LCDC_PANEL_TFT,
  74
  75         .data_lines     = 16,
  76         .bpp            = 16,
  77         .x_res          = 240,
  78         .y_res          = 320,
  79         .pixel_clock    = 12000,
  80         .hsw            = 12,
  81         .hfp            = 14,
  82         .hbp            = 72 - 12,
  83         .vsw            = 1,
  84         .vfp            = 1,
  85         .vbp            = 0,
  86         .pcd            = 0,
  87
  88         .init           = h3_panel_init,
  89         .cleanup        = h3_panel_cleanup,
  90         .enable         = h3_panel_enable,
  91         .disable        = h3_panel_disable,
  92         .get_caps       = h3_panel_get_caps,
  93 };
  94
  95 static int h3_panel_probe(struct platform_device *pdev)
  96 {
  97         omapfb_register_panel(&h3_panel);
  98         return 0;
  99 }
 100
 101 static int h3_panel_remove(struct platform_device *pdev)
 102 {
 103         return 0;
 104 }
 105
 106 static int h3_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 107 {
 108         return 0;
 109 }
 110
 111 static int h3_panel_resume(struct platform_device *pdev)
 112 {
 113         return 0;
 114 }
 115
 116 struct platform_driver h3_panel_driver = {
 117         .probe          = h3_panel_probe,
 118         .remove         = h3_panel_remove,
 119         .suspend        = h3_panel_suspend,
 120         .resume         = h3_panel_resume,
 121         .driver         = {
 122                 .name   = "lcd_h3",
 123                 .owner  = THIS_MODULE,
 124         },
 125 };
 126
 127 static int __init h3_panel_drv_init(void)
 128 {
 129         return platform_driver_register(&h3_panel_driver);
 130 }
 131
 132 static void __exit h3_panel_drv_cleanup(void)
 133 {
 134         platform_driver_unregister(&h3_panel_driver);
 135 }
 136
 137 module_init(h3_panel_drv_init);
 138 module_exit(h3_panel_drv_cleanup);