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
osk_panel_init(struct lcd_panel * panel,struct omapfb_device * fbdev)30 static 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
osk_panel_cleanup(struct lcd_panel * panel)36 static void osk_panel_cleanup(struct lcd_panel *panel)
37 {
38 }
39
osk_panel_enable(struct lcd_panel * panel)40 static 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
osk_panel_disable(struct lcd_panel * panel)57 static 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
osk_panel_get_caps(struct lcd_panel * panel)69 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
70 {
71 return 0;
72 }
73
74 struct 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
osk_panel_probe(struct platform_device * pdev)98 static int osk_panel_probe(struct platform_device *pdev)
99 {
100 omapfb_register_panel(&osk_panel);
101 return 0;
102 }
103
osk_panel_remove(struct platform_device * pdev)104 static int osk_panel_remove(struct platform_device *pdev)
105 {
106 return 0;
107 }
108
osk_panel_suspend(struct platform_device * pdev,pm_message_t mesg)109 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
110 {
111 return 0;
112 }
113
osk_panel_resume(struct platform_device * pdev)114 static int osk_panel_resume(struct platform_device *pdev)
115 {
116 return 0;
117 }
118
119 static 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
130 module_platform_driver(osk_panel_driver);
131