Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc
[linux-2.6] / drivers / video / omap / lcd_osk.c
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/arch/gpio.h>
27 #include <asm/arch/mux.h>
28 #include <asm/arch/omapfb.h>
29
30 static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev)
31 {
32         return 0;
33 }
34
35 static void osk_panel_cleanup(struct lcd_panel *panel)
36 {
37 }
38
39 static int osk_panel_enable(struct lcd_panel *panel)
40 {
41         /* configure PWL pin */
42         omap_cfg_reg(PWL);
43
44         /* Enable PWL unit */
45         omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
46
47         /* Set PWL level */
48         omap_writeb(0xFF, OMAP_PWL_ENABLE);
49
50         /* configure GPIO2 as output */
51         omap_set_gpio_direction(2, 0);
52
53         /* set GPIO2 high */
54         omap_set_gpio_dataout(2, 1);
55
56         return 0;
57 }
58
59 static void osk_panel_disable(struct lcd_panel *panel)
60 {
61         /* Set PWL level to zero */
62         omap_writeb(0x00, OMAP_PWL_ENABLE);
63
64         /* Disable PWL unit */
65         omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
66
67         /* set GPIO2 low */
68         omap_set_gpio_dataout(2, 0);
69 }
70
71 static unsigned long osk_panel_get_caps(struct lcd_panel *panel)
72 {
73         return 0;
74 }
75
76 struct lcd_panel osk_panel = {
77         .name           = "osk",
78         .config         = OMAP_LCDC_PANEL_TFT,
79
80         .bpp            = 16,
81         .data_lines     = 16,
82         .x_res          = 240,
83         .y_res          = 320,
84         .pixel_clock    = 12500,
85         .hsw            = 40,
86         .hfp            = 40,
87         .hbp            = 72,
88         .vsw            = 1,
89         .vfp            = 1,
90         .vbp            = 0,
91         .pcd            = 12,
92
93         .init           = osk_panel_init,
94         .cleanup        = osk_panel_cleanup,
95         .enable         = osk_panel_enable,
96         .disable        = osk_panel_disable,
97         .get_caps       = osk_panel_get_caps,
98 };
99
100 static int osk_panel_probe(struct platform_device *pdev)
101 {
102         omapfb_register_panel(&osk_panel);
103         return 0;
104 }
105
106 static int osk_panel_remove(struct platform_device *pdev)
107 {
108         return 0;
109 }
110
111 static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
112 {
113         return 0;
114 }
115
116 static int osk_panel_resume(struct platform_device *pdev)
117 {
118         return 0;
119 }
120
121 struct platform_driver osk_panel_driver = {
122         .probe          = osk_panel_probe,
123         .remove         = osk_panel_remove,
124         .suspend        = osk_panel_suspend,
125         .resume         = osk_panel_resume,
126         .driver         = {
127                 .name   = "lcd_osk",
128                 .owner  = THIS_MODULE,
129         },
130 };
131
132 static int osk_panel_drv_init(void)
133 {
134         return platform_driver_register(&osk_panel_driver);
135 }
136
137 static void osk_panel_drv_cleanup(void)
138 {
139         platform_driver_unregister(&osk_panel_driver);
140 }
141
142 module_init(osk_panel_drv_init);
143 module_exit(osk_panel_drv_cleanup);
144