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
28 #include <mach/hardware.h>
29 #include <mach/mux.h>
30
31 #include "omapfb.h"
32
osk_panel_init(struct lcd_panel * panel,struct omapfb_device * fbdev)33 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
34 {
35 /* gpio2 was allocated in board init */
36 return 0;
37 }
38
osk_panel_cleanup(struct lcd_panel * panel)39 static void osk_panel_cleanup(struct lcd_panel *panel)
40 {
41 }
42
osk_panel_enable(struct lcd_panel * panel)43 static int osk_panel_enable(struct lcd_panel *panel)
44 {
45 /* configure PWL pin */
46 omap_cfg_reg(PWL);
47
48 /* Enable PWL unit */
49 omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
50
51 /* Set PWL level */
52 omap_writeb(0xFF, OMAP_PWL_ENABLE);
53
54 /* set GPIO2 high (lcd power enabled) */
55 gpio_set_value(2, 1);
56
57 return 0;
58 }
59
osk_panel_disable(struct lcd_panel * panel)60 static void osk_panel_disable(struct lcd_panel *panel)
61 {
62 /* Set PWL level to zero */
63 omap_writeb(0x00, OMAP_PWL_ENABLE);
64
65 /* Disable PWL unit */
66 omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
67
68 /* set GPIO2 low */
69 gpio_set_value(2, 0);
70 }
71
osk_panel_get_caps(struct lcd_panel * panel)72 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
73 {
74 return 0;
75 }
76
77 struct lcd_panel osk_panel = {
78 .name = "osk",
79 .config = OMAP_LCDC_PANEL_TFT,
80
81 .bpp = 16,
82 .data_lines = 16,
83 .x_res = 240,
84 .y_res = 320,
85 .pixel_clock = 12500,
86 .hsw = 40,
87 .hfp = 40,
88 .hbp = 72,
89 .vsw = 1,
90 .vfp = 1,
91 .vbp = 0,
92 .pcd = 12,
93
94 .init = osk_panel_init,
95 .cleanup = osk_panel_cleanup,
96 .enable = osk_panel_enable,
97 .disable = osk_panel_disable,
98 .get_caps = osk_panel_get_caps,
99 };
100
osk_panel_probe(struct platform_device * pdev)101 static int osk_panel_probe(struct platform_device *pdev)
102 {
103 omapfb_register_panel(&osk_panel);
104 return 0;
105 }
106
osk_panel_remove(struct platform_device * pdev)107 static int osk_panel_remove(struct platform_device *pdev)
108 {
109 return 0;
110 }
111
osk_panel_suspend(struct platform_device * pdev,pm_message_t mesg)112 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
113 {
114 return 0;
115 }
116
osk_panel_resume(struct platform_device * pdev)117 static int osk_panel_resume(struct platform_device *pdev)
118 {
119 return 0;
120 }
121
122 static struct platform_driver osk_panel_driver = {
123 .probe = osk_panel_probe,
124 .remove = osk_panel_remove,
125 .suspend = osk_panel_suspend,
126 .resume = osk_panel_resume,
127 .driver = {
128 .name = "lcd_osk",
129 .owner = THIS_MODULE,
130 },
131 };
132
133 module_platform_driver(osk_panel_driver);
134