drivers/video/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 <mach/gpio.h>
  27 #include <mach/mux.h>
  28 #include <mach/omapfb.h>
  29
  30 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
  31 {
  32         /* gpio2 was allocated in board init */
  33         return 0;
  34 }
  35
  36 static void osk_panel_cleanup(struct lcd_panel *panel)
  37 {
  38 }
  39
  40 static int osk_panel_enable(struct lcd_panel *panel)
  41 {
  42         /* configure PWL pin */
  43         omap_cfg_reg(PWL);
  44
  45         /* Enable PWL unit */
  46         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  47
  48         /* Set PWL level */
  49         omap_writeb(0xFF, OMAP_PWL_ENABLE);
  50
  51         /* set GPIO2 high (lcd power enabled) */
  52         gpio_set_value(2, 1);
  53
  54         return 0;
  55 }
  56
  57 static void osk_panel_disable(struct lcd_panel *panel)
  58 {
  59         /* Set PWL level to zero */
  60         omap_writeb(0x00, OMAP_PWL_ENABLE);
  61
  62         /* Disable PWL unit */
  63         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  64
  65         /* set GPIO2 low */
  66         gpio_set_value(2, 0);
  67 }
  68
  69 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
  70 {
  71         return 0;
  72 }
  73
  74 struct lcd_panel osk_panel = {
  75         .name           = "osk",
  76         .config         = OMAP_LCDC_PANEL_TFT,
  77
  78         .bpp            = 16,
  79         .data_lines     = 16,
  80         .x_res          = 240,
  81         .y_res          = 320,
  82         .pixel_clock    = 12500,
  83         .hsw            = 40,
  84         .hfp            = 40,
  85         .hbp            = 72,
  86         .vsw            = 1,
  87         .vfp            = 1,
  88         .vbp            = 0,
  89         .pcd            = 12,
  90
  91         .init           = osk_panel_init,
  92         .cleanup        = osk_panel_cleanup,
  93         .enable         = osk_panel_enable,
  94         .disable        = osk_panel_disable,
  95         .get_caps       = osk_panel_get_caps,
  96 };
  97
  98 static int osk_panel_probe(struct platform_device *pdev)
  99 {
 100         omapfb_register_panel(&osk_panel);
 101         return 0;
 102 }
 103
 104 static int osk_panel_remove(struct platform_device *pdev)
 105 {
 106         return 0;
 107 }
 108
 109 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 110 {
 111         return 0;
 112 }
 113
 114 static int osk_panel_resume(struct platform_device *pdev)
 115 {
 116         return 0;
 117 }
 118
 119 struct platform_driver osk_panel_driver = {
 120         .probe          = osk_panel_probe,
 121         .remove         = osk_panel_remove,
 122         .suspend        = osk_panel_suspend,
 123         .resume         = osk_panel_resume,
 124         .driver         = {
 125                 .name   = "lcd_osk",
 126                 .owner  = THIS_MODULE,
 127         },
 128 };
 129
 130 static int osk_panel_drv_init(void)
 131 {
 132         return platform_driver_register(&osk_panel_driver);
 133 }
 134
 135 static void osk_panel_drv_cleanup(void)
 136 {
 137         platform_driver_unregister(&osk_panel_driver);
 138 }
 139
 140 module_init(osk_panel_drv_init);
 141 module_exit(osk_panel_drv_cleanup);
 142