diff options
Diffstat (limited to 'drivers/video/omap/lcd_omap3evm.c')
-rw-r--r-- | drivers/video/omap/lcd_omap3evm.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/video/omap/lcd_omap3evm.c b/drivers/video/omap/lcd_omap3evm.c new file mode 100644 index 00000000000..06840da0b09 --- /dev/null +++ b/drivers/video/omap/lcd_omap3evm.c | |||
@@ -0,0 +1,193 @@ | |||
1 | /* | ||
2 | * LCD panel support for the TI OMAP3 EVM board | ||
3 | * | ||
4 | * Author: Steve Sakoman <steve@sakoman.com> | ||
5 | * | ||
6 | * Derived from drivers/video/omap/lcd-apollon.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 <plat/mux.h> | ||
29 | #include <asm/mach-types.h> | ||
30 | |||
31 | #include "omapfb.h" | ||
32 | |||
33 | #define LCD_PANEL_ENABLE_GPIO 153 | ||
34 | #define LCD_PANEL_LR 2 | ||
35 | #define LCD_PANEL_UD 3 | ||
36 | #define LCD_PANEL_INI 152 | ||
37 | #define LCD_PANEL_QVGA 154 | ||
38 | #define LCD_PANEL_RESB 155 | ||
39 | |||
40 | #define ENABLE_VDAC_DEDICATED 0x03 | ||
41 | #define ENABLE_VDAC_DEV_GRP 0x20 | ||
42 | #define ENABLE_VPLL2_DEDICATED 0x05 | ||
43 | #define ENABLE_VPLL2_DEV_GRP 0xE0 | ||
44 | |||
45 | #define TWL_LED_LEDEN 0x00 | ||
46 | #define TWL_PWMA_PWMAON 0x00 | ||
47 | #define TWL_PWMA_PWMAOFF 0x01 | ||
48 | |||
49 | static unsigned int bklight_level; | ||
50 | |||
51 | static int omap3evm_panel_init(struct lcd_panel *panel, | ||
52 | struct omapfb_device *fbdev) | ||
53 | { | ||
54 | gpio_request(LCD_PANEL_LR, "LCD lr"); | ||
55 | gpio_request(LCD_PANEL_UD, "LCD ud"); | ||
56 | gpio_request(LCD_PANEL_INI, "LCD ini"); | ||
57 | gpio_request(LCD_PANEL_RESB, "LCD resb"); | ||
58 | gpio_request(LCD_PANEL_QVGA, "LCD qvga"); | ||
59 | |||
60 | gpio_direction_output(LCD_PANEL_RESB, 1); | ||
61 | gpio_direction_output(LCD_PANEL_INI, 1); | ||
62 | gpio_direction_output(LCD_PANEL_QVGA, 0); | ||
63 | gpio_direction_output(LCD_PANEL_LR, 1); | ||
64 | gpio_direction_output(LCD_PANEL_UD, 1); | ||
65 | |||
66 | twl_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN); | ||
67 | twl_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON); | ||
68 | twl_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF); | ||
69 | bklight_level = 100; | ||
70 | |||
71 | return 0; | ||
72 | } | ||
73 | |||
74 | static void omap3evm_panel_cleanup(struct lcd_panel *panel) | ||
75 | { | ||
76 | gpio_free(LCD_PANEL_QVGA); | ||
77 | gpio_free(LCD_PANEL_RESB); | ||
78 | gpio_free(LCD_PANEL_INI); | ||
79 | gpio_free(LCD_PANEL_UD); | ||
80 | gpio_free(LCD_PANEL_LR); | ||
81 | } | ||
82 | |||
83 | static int omap3evm_panel_enable(struct lcd_panel *panel) | ||
84 | { | ||
85 | gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0); | ||
86 | return 0; | ||
87 | } | ||
88 | |||
89 | static void omap3evm_panel_disable(struct lcd_panel *panel) | ||
90 | { | ||
91 | gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1); | ||
92 | } | ||
93 | |||
94 | static unsigned long omap3evm_panel_get_caps(struct lcd_panel *panel) | ||
95 | { | ||
96 | return 0; | ||
97 | } | ||
98 | |||
99 | static int omap3evm_bklight_setlevel(struct lcd_panel *panel, | ||
100 | unsigned int level) | ||
101 | { | ||
102 | u8 c; | ||
103 | if ((level >= 0) && (level <= 100)) { | ||
104 | c = (125 * (100 - level)) / 100 + 2; | ||
105 | twl_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF); | ||
106 | bklight_level = level; | ||
107 | } | ||
108 | return 0; | ||
109 | } | ||
110 | |||
111 | static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel) | ||
112 | { | ||
113 | return bklight_level; | ||
114 | } | ||
115 | |||
116 | static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel) | ||
117 | { | ||
118 | return 100; | ||
119 | } | ||
120 | |||
121 | struct lcd_panel omap3evm_panel = { | ||
122 | .name = "omap3evm", | ||
123 | .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC | | ||
124 | OMAP_LCDC_INV_HSYNC, | ||
125 | |||
126 | .bpp = 16, | ||
127 | .data_lines = 18, | ||
128 | .x_res = 480, | ||
129 | .y_res = 640, | ||
130 | .hsw = 3, /* hsync_len (4) - 1 */ | ||
131 | .hfp = 3, /* right_margin (4) - 1 */ | ||
132 | .hbp = 39, /* left_margin (40) - 1 */ | ||
133 | .vsw = 1, /* vsync_len (2) - 1 */ | ||
134 | .vfp = 2, /* lower_margin */ | ||
135 | .vbp = 7, /* upper_margin (8) - 1 */ | ||
136 | |||
137 | .pixel_clock = 26000, | ||
138 | |||
139 | .init = omap3evm_panel_init, | ||
140 | .cleanup = omap3evm_panel_cleanup, | ||
141 | .enable = omap3evm_panel_enable, | ||
142 | .disable = omap3evm_panel_disable, | ||
143 | .get_caps = omap3evm_panel_get_caps, | ||
144 | .set_bklight_level = omap3evm_bklight_setlevel, | ||
145 | .get_bklight_level = omap3evm_bklight_getlevel, | ||
146 | .get_bklight_max = omap3evm_bklight_getmaxlevel, | ||
147 | }; | ||
148 | |||
149 | static int omap3evm_panel_probe(struct platform_device *pdev) | ||
150 | { | ||
151 | omapfb_register_panel(&omap3evm_panel); | ||
152 | return 0; | ||
153 | } | ||
154 | |||
155 | static int omap3evm_panel_remove(struct platform_device *pdev) | ||
156 | { | ||
157 | return 0; | ||
158 | } | ||
159 | |||
160 | static int omap3evm_panel_suspend(struct platform_device *pdev, | ||
161 | pm_message_t mesg) | ||
162 | { | ||
163 | return 0; | ||
164 | } | ||
165 | |||
166 | static int omap3evm_panel_resume(struct platform_device *pdev) | ||
167 | { | ||
168 | return 0; | ||
169 | } | ||
170 | |||
171 | struct platform_driver omap3evm_panel_driver = { | ||
172 | .probe = omap3evm_panel_probe, | ||
173 | .remove = omap3evm_panel_remove, | ||
174 | .suspend = omap3evm_panel_suspend, | ||
175 | .resume = omap3evm_panel_resume, | ||
176 | .driver = { | ||
177 | .name = "omap3evm_lcd", | ||
178 | .owner = THIS_MODULE, | ||
179 | }, | ||
180 | }; | ||
181 | |||
182 | static int __init omap3evm_panel_drv_init(void) | ||
183 | { | ||
184 | return platform_driver_register(&omap3evm_panel_driver); | ||
185 | } | ||
186 | |||
187 | static void __exit omap3evm_panel_drv_exit(void) | ||
188 | { | ||
189 | platform_driver_unregister(&omap3evm_panel_driver); | ||
190 | } | ||
191 | |||
192 | module_init(omap3evm_panel_drv_init); | ||
193 | module_exit(omap3evm_panel_drv_exit); | ||