drivers/video/omap/lcd_h3.c

   1 /*
   2  * File: drivers/video/omap/lcd-h3.c
   3  *
   4  * LCD panel support for the TI OMAP H3 board
   5  *
   6  * Copyright (C) 2004 Nokia Corporation
   7  * Author: Imre Deak <imre.deak@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/tps65010.h>
  29 #include <asm/arch/omapfb.h>
  30
  31 #define MODULE_NAME     "omapfb-lcd_h3"
  32
  33 #define pr_err(fmt, args...) printk(KERN_ERR MODULE_NAME ": " fmt, ## args)
  34
  35 static int h3_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  36 {
  37         return 0;
  38 }
  39
  40 static void h3_panel_cleanup(struct lcd_panel *panel)
  41 {
  42 }
  43
  44 static int h3_panel_enable(struct lcd_panel *panel)
  45 {
  46         int r = 0;
  47
  48         /* GPIO1 and GPIO2 of TPS65010 send LCD_ENBKL and LCD_ENVDD signals */
  49         r = tps65010_set_gpio_out_value(GPIO1, HIGH);
  50         if (!r)
  51                 r = tps65010_set_gpio_out_value(GPIO2, HIGH);
  52         if (r)
  53                 pr_err("Unable to turn on LCD panel\n");
  54
  55         return r;
  56 }
  57
  58 static void h3_panel_disable(struct lcd_panel *panel)
  59 {
  60         int r = 0;
  61
  62         /* GPIO1 and GPIO2 of TPS65010 send LCD_ENBKL and LCD_ENVDD signals */
  63         r = tps65010_set_gpio_out_value(GPIO1, LOW);
  64         if (!r)
  65                 tps65010_set_gpio_out_value(GPIO2, LOW);
  66         if (r)
  67                 pr_err("Unable to turn off LCD panel\n");
  68 }
  69
  70 static unsigned long h3_panel_get_caps(struct lcd_panel *panel)
  71 {
  72         return 0;
  73 }
  74
  75 struct lcd_panel h3_panel = {
  76         .name           = "h3",
  77         .config         = OMAP_LCDC_PANEL_TFT,
  78
  79         .data_lines     = 16,
  80         .bpp            = 16,
  81         .x_res          = 240,
  82         .y_res          = 320,
  83         .pixel_clock    = 12000,
  84         .hsw            = 12,
  85         .hfp            = 14,
  86         .hbp            = 72 - 12,
  87         .vsw            = 1,
  88         .vfp            = 1,
  89         .vbp            = 0,
  90         .pcd            = 0,
  91
  92         .init           = h3_panel_init,
  93         .cleanup        = h3_panel_cleanup,
  94         .enable         = h3_panel_enable,
  95         .disable        = h3_panel_disable,
  96         .get_caps       = h3_panel_get_caps,
  97 };
  98
  99 static int h3_panel_probe(struct platform_device *pdev)
 100 {
 101         omapfb_register_panel(&h3_panel);
 102         return 0;
 103 }
 104
 105 static int h3_panel_remove(struct platform_device *pdev)
 106 {
 107         return 0;
 108 }
 109
 110 static int h3_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 111 {
 112         return 0;
 113 }
 114
 115 static int h3_panel_resume(struct platform_device *pdev)
 116 {
 117         return 0;
 118 }
 119
 120 struct platform_driver h3_panel_driver = {
 121         .probe          = h3_panel_probe,
 122         .remove         = h3_panel_remove,
 123         .suspend        = h3_panel_suspend,
 124         .resume         = h3_panel_resume,
 125         .driver         = {
 126                 .name   = "lcd_h3",
 127                 .owner  = THIS_MODULE,
 128         },
 129 };
 130
 131 static int h3_panel_drv_init(void)
 132 {
 133         return platform_driver_register(&h3_panel_driver);
 134 }
 135
 136 static void h3_panel_drv_cleanup(void)
 137 {
 138         platform_driver_unregister(&h3_panel_driver);
 139 }
 140
 141 module_init(h3_panel_drv_init);
 142 module_exit(h3_panel_drv_cleanup);
 143