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