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https://github.com/edk2-porting/linux-next.git
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561eb9d09a
Most OMAP FB LCD drivers don't have anything to do in their panel callbacks. This leads to a large set of empty boilerplate functions in the panel drivers. Make those callbacks optional by checking if they are set before calling them. This allows those boilerplate functions to be removed. Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* LCD panel support for the TI OMAP OSK board
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*
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* Copyright (C) 2004 Nokia Corporation
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* Author: Imre Deak <imre.deak@nokia.com>
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* Adapted for OSK by <dirk.behme@de.bosch.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <mach/hardware.h>
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#include <mach/mux.h>
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#include "omapfb.h"
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static int osk_panel_enable(struct lcd_panel *panel)
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{
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/* configure PWL pin */
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omap_cfg_reg(PWL);
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/* Enable PWL unit */
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omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
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/* Set PWL level */
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omap_writeb(0xFF, OMAP_PWL_ENABLE);
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/* set GPIO2 high (lcd power enabled) */
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gpio_set_value(2, 1);
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return 0;
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}
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static void osk_panel_disable(struct lcd_panel *panel)
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{
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/* Set PWL level to zero */
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omap_writeb(0x00, OMAP_PWL_ENABLE);
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/* Disable PWL unit */
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omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
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/* set GPIO2 low */
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gpio_set_value(2, 0);
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}
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static struct lcd_panel osk_panel = {
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.name = "osk",
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.config = OMAP_LCDC_PANEL_TFT,
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.bpp = 16,
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.data_lines = 16,
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.x_res = 240,
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.y_res = 320,
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.pixel_clock = 12500,
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.hsw = 40,
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.hfp = 40,
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.hbp = 72,
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.vsw = 1,
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.vfp = 1,
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.vbp = 0,
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.pcd = 12,
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.enable = osk_panel_enable,
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.disable = osk_panel_disable,
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};
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static int osk_panel_probe(struct platform_device *pdev)
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{
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omapfb_register_panel(&osk_panel);
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return 0;
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}
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static struct platform_driver osk_panel_driver = {
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.probe = osk_panel_probe,
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.driver = {
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.name = "lcd_osk",
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},
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};
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module_platform_driver(osk_panel_driver);
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