1 /*
2 * LCD panel support for the TI OMAP3 Beagle board
3 *
4 * Author: Koen Kooi <koen@openembedded.org>
5 *
6 * Derived from drivers/video/omap/lcd-omap3evm.c
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 #include <linux/gpio.h>
26 #include <linux/i2c/twl.h>
27
28 #include <asm/mach-types.h>
29
30 #include "omapfb.h"
31
32 #define LCD_PANEL_ENABLE_GPIO 170
33
omap3beagle_panel_init(struct lcd_panel * panel,struct omapfb_device * fbdev)34 static int omap3beagle_panel_init(struct lcd_panel *panel,
35 struct omapfb_device *fbdev)
36 {
37 gpio_request(LCD_PANEL_ENABLE_GPIO, "LCD enable");
38 return 0;
39 }
40
omap3beagle_panel_cleanup(struct lcd_panel * panel)41 static void omap3beagle_panel_cleanup(struct lcd_panel *panel)
42 {
43 gpio_free(LCD_PANEL_ENABLE_GPIO);
44 }
45
omap3beagle_panel_enable(struct lcd_panel * panel)46 static int omap3beagle_panel_enable(struct lcd_panel *panel)
47 {
48 gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1);
49 return 0;
50 }
51
omap3beagle_panel_disable(struct lcd_panel * panel)52 static void omap3beagle_panel_disable(struct lcd_panel *panel)
53 {
54 gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0);
55 }
56
omap3beagle_panel_get_caps(struct lcd_panel * panel)57 static unsigned long omap3beagle_panel_get_caps(struct lcd_panel *panel)
58 {
59 return 0;
60 }
61
62 struct lcd_panel omap3beagle_panel = {
63 .name = "omap3beagle",
64 .config = OMAP_LCDC_PANEL_TFT,
65
66 .bpp = 16,
67 .data_lines = 24,
68 .x_res = 1024,
69 .y_res = 768,
70 .hsw = 3, /* hsync_len (4) - 1 */
71 .hfp = 3, /* right_margin (4) - 1 */
72 .hbp = 39, /* left_margin (40) - 1 */
73 .vsw = 1, /* vsync_len (2) - 1 */
74 .vfp = 2, /* lower_margin */
75 .vbp = 7, /* upper_margin (8) - 1 */
76
77 .pixel_clock = 64000,
78
79 .init = omap3beagle_panel_init,
80 .cleanup = omap3beagle_panel_cleanup,
81 .enable = omap3beagle_panel_enable,
82 .disable = omap3beagle_panel_disable,
83 .get_caps = omap3beagle_panel_get_caps,
84 };
85
omap3beagle_panel_probe(struct platform_device * pdev)86 static int omap3beagle_panel_probe(struct platform_device *pdev)
87 {
88 omapfb_register_panel(&omap3beagle_panel);
89 return 0;
90 }
91
omap3beagle_panel_remove(struct platform_device * pdev)92 static int omap3beagle_panel_remove(struct platform_device *pdev)
93 {
94 return 0;
95 }
96
omap3beagle_panel_suspend(struct platform_device * pdev,pm_message_t mesg)97 static int omap3beagle_panel_suspend(struct platform_device *pdev,
98 pm_message_t mesg)
99 {
100 return 0;
101 }
102
omap3beagle_panel_resume(struct platform_device * pdev)103 static int omap3beagle_panel_resume(struct platform_device *pdev)
104 {
105 return 0;
106 }
107
108 struct platform_driver omap3beagle_panel_driver = {
109 .probe = omap3beagle_panel_probe,
110 .remove = omap3beagle_panel_remove,
111 .suspend = omap3beagle_panel_suspend,
112 .resume = omap3beagle_panel_resume,
113 .driver = {
114 .name = "omap3beagle_lcd",
115 .owner = THIS_MODULE,
116 },
117 };
118
omap3beagle_panel_drv_init(void)119 static int __init omap3beagle_panel_drv_init(void)
120 {
121 return platform_driver_register(&omap3beagle_panel_driver);
122 }
123
omap3beagle_panel_drv_exit(void)124 static void __exit omap3beagle_panel_drv_exit(void)
125 {
126 platform_driver_unregister(&omap3beagle_panel_driver);
127 }
128
129 module_init(omap3beagle_panel_drv_init);
130 module_exit(omap3beagle_panel_drv_exit);
131