LXR linux/drivers/video/fbdev/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#include <linux/gpio.h>
  26
  27#include <mach/hardware.h>
  28#include <mach/mux.h>
  29
  30#include "omapfb.h"
  31
  32static int osk_panel_enable(struct lcd_panel *panel)
  33{
  34        /* configure PWL pin */
  35        omap_cfg_reg(PWL);
  36
  37        /* Enable PWL unit */
  38        omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  39
  40        /* Set PWL level */
  41        omap_writeb(0xFF, OMAP_PWL_ENABLE);
  42
  43        /* set GPIO2 high (lcd power enabled) */
  44        gpio_set_value(2, 1);
  45
  46        return 0;
  47}
  48
  49static void osk_panel_disable(struct lcd_panel *panel)
  50{
  51        /* Set PWL level to zero */
  52        omap_writeb(0x00, OMAP_PWL_ENABLE);
  53
  54        /* Disable PWL unit */
  55        omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  56
  57        /* set GPIO2 low */
  58        gpio_set_value(2, 0);
  59}
  60
  61static struct lcd_panel osk_panel = {
  62        .name           = "osk",
  63        .config         = OMAP_LCDC_PANEL_TFT,
  64
  65        .bpp            = 16,
  66        .data_lines     = 16,
  67        .x_res          = 240,
  68        .y_res          = 320,
  69        .pixel_clock    = 12500,
  70        .hsw            = 40,
  71        .hfp            = 40,
  72        .hbp            = 72,
  73        .vsw            = 1,
  74        .vfp            = 1,
  75        .vbp            = 0,
  76        .pcd            = 12,
  77
  78        .enable         = osk_panel_enable,
  79        .disable        = osk_panel_disable,
  80};
  81
  82static int osk_panel_probe(struct platform_device *pdev)
  83{
  84        omapfb_register_panel(&osk_panel);
  85        return 0;
  86}
  87
  88static struct platform_driver osk_panel_driver = {
  89        .probe          = osk_panel_probe,
  90        .driver         = {
  91                .name   = "lcd_osk",
  92        },
  93};
  94
  95module_platform_driver(osk_panel_driver);
  96
  97MODULE_AUTHOR("Imre Deak");
  98MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
  99MODULE_LICENSE("GPL");
 100