lcd_osk.c

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/*
 * LCD panel support for the TI OMAP OSK board
 *
 * Copyright (C) 2004 Nokia Corporation
 * Author: Imre Deak <[email protected]>
 * Adapted for OSK by <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <linux/module.h>
#include <linux/platform_device.h>

#include <asm/gpio.h>
#include <mach/mux.h>
#include "omapfb.h"

static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
{
    /* gpio2 was allocated in board init */
    return 0;
}

static void osk_panel_cleanup(struct lcd_panel *panel)
{
}

static int osk_panel_enable(struct lcd_panel *panel)
{
    /* configure PWL pin */
    omap_cfg_reg(PWL);

    /* Enable PWL unit */
    omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);

    /* Set PWL level */
    omap_writeb(0xFF, OMAP_PWL_ENABLE);

    /* set GPIO2 high (lcd power enabled) */
    gpio_set_value(2, 1);

    return 0;
}

static void osk_panel_disable(struct lcd_panel *panel)
{
    /* Set PWL level to zero */
    omap_writeb(0x00, OMAP_PWL_ENABLE);

    /* Disable PWL unit */
    omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);

    /* set GPIO2 low */
    gpio_set_value(2, 0);
}

static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
{
    return 0;
}

struct lcd_panel osk_panel = {
    .name       = "osk",
    .config     = OMAP_LCDC_PANEL_TFT,

    .bpp        = 16,
    .data_lines = 16,
    .x_res      = 240,
    .y_res      = 320,
    .pixel_clock    = 12500,
    .hsw        = 40,
    .hfp        = 40,
    .hbp        = 72,
    .vsw        = 1,
    .vfp        = 1,
    .vbp        = 0,
    .pcd        = 12,

    .init       = osk_panel_init,
    .cleanup    = osk_panel_cleanup,
    .enable     = osk_panel_enable,
    .disable    = osk_panel_disable,
    .get_caps   = osk_panel_get_caps,
};

static int osk_panel_probe(struct platform_device *pdev)
{
    omapfb_register_panel(&osk_panel);
    return 0;
}

static int osk_panel_remove(struct platform_device *pdev)
{
    return 0;
}

static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
{
    return 0;
}

static int osk_panel_resume(struct platform_device *pdev)
{
    return 0;
}

static struct platform_driver osk_panel_driver = {
    .probe      = osk_panel_probe,
    .remove     = osk_panel_remove,
    .suspend    = osk_panel_suspend,
    .resume     = osk_panel_resume,
    .driver     = {
        .name   = "lcd_osk",
        .owner  = THIS_MODULE,
    },
};

module_platform_driver(osk_panel_driver);