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