lcd_osk.c revision f806f9b6b8ec2c8b6a3297e684bcb80f54e3dc98 
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
26#include <asm/gpio.h>
27#include <plat/mux.h>
28#include "omapfb.h"
29
30static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
31{
32	/* gpio2 was allocated in board init */
33	return 0;
34}
35
36static void osk_panel_cleanup(struct lcd_panel *panel)
37{
38}
39
40static int osk_panel_enable(struct lcd_panel *panel)
41{
42	/* configure PWL pin */
43	omap_cfg_reg(PWL);
44
45	/* Enable PWL unit */
46	omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
47
48	/* Set PWL level */
49	omap_writeb(0xFF, OMAP_PWL_ENABLE);
50
51	/* set GPIO2 high (lcd power enabled) */
52	gpio_set_value(2, 1);
53
54	return 0;
55}
56
57static void osk_panel_disable(struct lcd_panel *panel)
58{
59	/* Set PWL level to zero */
60	omap_writeb(0x00, OMAP_PWL_ENABLE);
61
62	/* Disable PWL unit */
63	omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
64
65	/* set GPIO2 low */
66	gpio_set_value(2, 0);
67}
68
69static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
70{
71	return 0;
72}
73
74struct lcd_panel osk_panel = {
75	.name		= "osk",
76	.config		= OMAP_LCDC_PANEL_TFT,
77
78	.bpp		= 16,
79	.data_lines	= 16,
80	.x_res		= 240,
81	.y_res		= 320,
82	.pixel_clock	= 12500,
83	.hsw		= 40,
84	.hfp		= 40,
85	.hbp		= 72,
86	.vsw		= 1,
87	.vfp		= 1,
88	.vbp		= 0,
89	.pcd		= 12,
90
91	.init		= osk_panel_init,
92	.cleanup	= osk_panel_cleanup,
93	.enable		= osk_panel_enable,
94	.disable	= osk_panel_disable,
95	.get_caps	= osk_panel_get_caps,
96};
97
98static int osk_panel_probe(struct platform_device *pdev)
99{
100	omapfb_register_panel(&osk_panel);
101	return 0;
102}
103
104static int osk_panel_remove(struct platform_device *pdev)
105{
106	return 0;
107}
108
109static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
110{
111	return 0;
112}
113
114static int osk_panel_resume(struct platform_device *pdev)
115{
116	return 0;
117}
118
119static struct platform_driver osk_panel_driver = {
120	.probe		= osk_panel_probe,
121	.remove		= osk_panel_remove,
122	.suspend	= osk_panel_suspend,
123	.resume		= osk_panel_resume,
124	.driver		= {
125		.name	= "lcd_osk",
126		.owner	= THIS_MODULE,
127	},
128};
129
130module_platform_driver(osk_panel_driver);
131