LXR linux/drivers/video/fbdev/omap/lcd

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * LCD panel support for the TI OMAP OSK board
   4 *
   5 * Copyright (C) 2004 Nokia Corporation
   6 * Author: Imre Deak <imre.deak@nokia.com>
   7 * Adapted for OSK by <dirk.behme@de.bosch.com>
   8 */
   9
  10#include <linux/module.h>
  11#include <linux/platform_device.h>
  12#include <linux/gpio.h>
  13
  14#include <mach/hardware.h>
  15#include <mach/mux.h>
  16
  17#include "omapfb.h"
  18
  19static int osk_panel_enable(struct lcd_panel *panel)
  20{
  21        /* configure PWL pin */
  22        omap_cfg_reg(PWL);
  23
  24        /* Enable PWL unit */
  25        omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
  26
  27        /* Set PWL level */
  28        omap_writeb(0xFF, OMAP_PWL_ENABLE);
  29
  30        /* set GPIO2 high (lcd power enabled) */
  31        gpio_set_value(2, 1);
  32
  33        return 0;
  34}
  35
  36static void osk_panel_disable(struct lcd_panel *panel)
  37{
  38        /* Set PWL level to zero */
  39        omap_writeb(0x00, OMAP_PWL_ENABLE);
  40
  41        /* Disable PWL unit */
  42        omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
  43
  44        /* set GPIO2 low */
  45        gpio_set_value(2, 0);
  46}
  47
  48static struct lcd_panel osk_panel = {
  49        .name           = "osk",
  50        .config         = OMAP_LCDC_PANEL_TFT,
  51
  52        .bpp            = 16,
  53        .data_lines     = 16,
  54        .x_res          = 240,
  55        .y_res          = 320,
  56        .pixel_clock    = 12500,
  57        .hsw            = 40,
  58        .hfp            = 40,
  59        .hbp            = 72,
  60        .vsw            = 1,
  61        .vfp            = 1,
  62        .vbp            = 0,
  63        .pcd            = 12,
  64
  65        .enable         = osk_panel_enable,
  66        .disable        = osk_panel_disable,
  67};
  68
  69static int osk_panel_probe(struct platform_device *pdev)
  70{
  71        omapfb_register_panel(&osk_panel);
  72        return 0;
  73}
  74
  75static struct platform_driver osk_panel_driver = {
  76        .probe          = osk_panel_probe,
  77        .driver         = {
  78                .name   = "lcd_osk",
  79        },
  80};
  81
  82module_platform_driver(osk_panel_driver);
  83
  84MODULE_AUTHOR("Imre Deak");
  85MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
  86MODULE_LICENSE("GPL");
  87