LXR linux/drivers/video/omap/lcd

   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
  30static 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
  36static void osk_panel_cleanup(struct lcd_panel *panel)
  37{
  38}
  39
  40static 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
  57static 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
  69static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
  70{
  71        return 0;
  72}
  73
  74struct 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
  98static int osk_panel_probe(struct platform_device *pdev)
  99{
 100        omapfb_register_panel(&osk_panel);
 101        return 0;
 102}
 103
 104static int osk_panel_remove(struct platform_device *pdev)
 105{
 106        return 0;
 107}
 108
 109static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
 110{
 111        return 0;
 112}
 113
 114static int osk_panel_resume(struct platform_device *pdev)
 115{
 116        return 0;
 117}
 118
 119struct 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
 130static int __init osk_panel_drv_init(void)
 131{
 132        return platform_driver_register(&osk_panel_driver);
 133}
 134
 135static void __exit osk_panel_drv_cleanup(void)
 136{
 137        platform_driver_unregister(&osk_panel_driver);
 138}
 139
 140module_init(osk_panel_drv_init);
 141module_exit(osk_panel_drv_cleanup);
 142
 143