diff options
author | Steve Sakoman <steve@sakoman.com> | 2009-09-22 19:46:49 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 10:39:49 -0400 |
commit | 2a8729c47a9dfe5c8ba55883b86b719b33e6e099 (patch) | |
tree | 47d4e169ed694a791f5224d4d9aa8add4b0e99e3 /drivers/video/omap | |
parent | fb49b78452503f6cdf8b243ccb40cda81aae9998 (diff) |
omapfb: add support for the OMAP3 EVM LCD
Add LCD support for OMAP3 EVM
Backlight support by Arun C <arunedarath@mistralsolutions.com>
Fixed-by: Jarkko Nikula <jarkko.nikula@gmail.com>
Fixed-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Acked-by: Syed Mohammed Khasim <khasim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Imre Deak <imre.deak@nokia.com>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/omap')
-rw-r--r-- | drivers/video/omap/Makefile | 1 | ||||
-rw-r--r-- | drivers/video/omap/lcd_omap3evm.c | 192 |
2 files changed, 193 insertions, 0 deletions
diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile index 96d2d4349bda..4345157b23ef 100644 --- a/drivers/video/omap/Makefile +++ b/drivers/video/omap/Makefile | |||
@@ -30,6 +30,7 @@ objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o | |||
30 | objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o | 30 | objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o |
31 | objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o | 31 | objs-y$(CONFIG_MACH_OMAP_3430SDP) += lcd_2430sdp.o |
32 | objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o | 32 | objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o |
33 | objs-y$(CONFIG_MACH_OMAP3EVM) += lcd_omap3evm.o | ||
33 | objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o | 34 | objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o |
34 | 35 | ||
35 | omapfb-objs := $(objs-yy) | 36 | omapfb-objs := $(objs-yy) |
diff --git a/drivers/video/omap/lcd_omap3evm.c b/drivers/video/omap/lcd_omap3evm.c new file mode 100644 index 000000000000..b6a4c2c57a2f --- /dev/null +++ b/drivers/video/omap/lcd_omap3evm.c | |||
@@ -0,0 +1,192 @@ | |||
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/twl4030.h> | ||
27 | |||
28 | #include <mach/mux.h> | ||
29 | #include <mach/omapfb.h> | ||
30 | #include <asm/mach-types.h> | ||
31 | |||
32 | #define LCD_PANEL_ENABLE_GPIO 153 | ||
33 | #define LCD_PANEL_LR 2 | ||
34 | #define LCD_PANEL_UD 3 | ||
35 | #define LCD_PANEL_INI 152 | ||
36 | #define LCD_PANEL_QVGA 154 | ||
37 | #define LCD_PANEL_RESB 155 | ||
38 | |||
39 | #define ENABLE_VDAC_DEDICATED 0x03 | ||
40 | #define ENABLE_VDAC_DEV_GRP 0x20 | ||
41 | #define ENABLE_VPLL2_DEDICATED 0x05 | ||
42 | #define ENABLE_VPLL2_DEV_GRP 0xE0 | ||
43 | |||
44 | #define TWL_LED_LEDEN 0x00 | ||
45 | #define TWL_PWMA_PWMAON 0x00 | ||
46 | #define TWL_PWMA_PWMAOFF 0x01 | ||
47 | |||
48 | static unsigned int bklight_level; | ||
49 | |||
50 | static int omap3evm_panel_init(struct lcd_panel *panel, | ||
51 | struct omapfb_device *fbdev) | ||
52 | { | ||
53 | gpio_request(LCD_PANEL_LR, "LCD lr"); | ||
54 | gpio_request(LCD_PANEL_UD, "LCD ud"); | ||
55 | gpio_request(LCD_PANEL_INI, "LCD ini"); | ||
56 | gpio_request(LCD_PANEL_RESB, "LCD resb"); | ||
57 | gpio_request(LCD_PANEL_QVGA, "LCD qvga"); | ||
58 | |||
59 | gpio_direction_output(LCD_PANEL_RESB, 1); | ||
60 | gpio_direction_output(LCD_PANEL_INI, 1); | ||
61 | gpio_direction_output(LCD_PANEL_QVGA, 0); | ||
62 | gpio_direction_output(LCD_PANEL_LR, 1); | ||
63 | gpio_direction_output(LCD_PANEL_UD, 1); | ||
64 | |||
65 | twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN); | ||
66 | twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON); | ||
67 | twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF); | ||
68 | bklight_level = 100; | ||
69 | |||
70 | return 0; | ||
71 | } | ||
72 | |||
73 | static void omap3evm_panel_cleanup(struct lcd_panel *panel) | ||
74 | { | ||
75 | gpio_free(LCD_PANEL_QVGA); | ||
76 | gpio_free(LCD_PANEL_RESB); | ||
77 | gpio_free(LCD_PANEL_INI); | ||
78 | gpio_free(LCD_PANEL_UD); | ||
79 | gpio_free(LCD_PANEL_LR); | ||
80 | } | ||
81 | |||
82 | static int omap3evm_panel_enable(struct lcd_panel *panel) | ||
83 | { | ||
84 | gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0); | ||
85 | return 0; | ||
86 | } | ||
87 | |||
88 | static void omap3evm_panel_disable(struct lcd_panel *panel) | ||
89 | { | ||
90 | gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1); | ||
91 | } | ||
92 | |||
93 | static unsigned long omap3evm_panel_get_caps(struct lcd_panel *panel) | ||
94 | { | ||
95 | return 0; | ||
96 | } | ||
97 | |||
98 | static int omap3evm_bklight_setlevel(struct lcd_panel *panel, | ||
99 | unsigned int level) | ||
100 | { | ||
101 | u8 c; | ||
102 | if ((level >= 0) && (level <= 100)) { | ||
103 | c = (125 * (100 - level)) / 100 + 2; | ||
104 | twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF); | ||
105 | bklight_level = level; | ||
106 | } | ||
107 | return 0; | ||
108 | } | ||
109 | |||
110 | static unsigned int omap3evm_bklight_getlevel(struct lcd_panel *panel) | ||
111 | { | ||
112 | return bklight_level; | ||
113 | } | ||
114 | |||
115 | static unsigned int omap3evm_bklight_getmaxlevel(struct lcd_panel *panel) | ||
116 | { | ||
117 | return 100; | ||
118 | } | ||
119 | |||
120 | struct lcd_panel omap3evm_panel = { | ||
121 | .name = "omap3evm", | ||
122 | .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC | | ||
123 | OMAP_LCDC_INV_HSYNC, | ||
124 | |||
125 | .bpp = 16, | ||
126 | .data_lines = 18, | ||
127 | .x_res = 480, | ||
128 | .y_res = 640, | ||
129 | .hsw = 3, /* hsync_len (4) - 1 */ | ||
130 | .hfp = 3, /* right_margin (4) - 1 */ | ||
131 | .hbp = 39, /* left_margin (40) - 1 */ | ||
132 | .vsw = 1, /* vsync_len (2) - 1 */ | ||
133 | .vfp = 2, /* lower_margin */ | ||
134 | .vbp = 7, /* upper_margin (8) - 1 */ | ||
135 | |||
136 | .pixel_clock = 26000, | ||
137 | |||
138 | .init = omap3evm_panel_init, | ||
139 | .cleanup = omap3evm_panel_cleanup, | ||
140 | .enable = omap3evm_panel_enable, | ||
141 | .disable = omap3evm_panel_disable, | ||
142 | .get_caps = omap3evm_panel_get_caps, | ||
143 | .set_bklight_level = omap3evm_bklight_setlevel, | ||
144 | .get_bklight_level = omap3evm_bklight_getlevel, | ||
145 | .get_bklight_max = omap3evm_bklight_getmaxlevel, | ||
146 | }; | ||
147 | |||
148 | static int omap3evm_panel_probe(struct platform_device *pdev) | ||
149 | { | ||
150 | omapfb_register_panel(&omap3evm_panel); | ||
151 | return 0; | ||
152 | } | ||
153 | |||
154 | static int omap3evm_panel_remove(struct platform_device *pdev) | ||
155 | { | ||
156 | return 0; | ||
157 | } | ||
158 | |||
159 | static int omap3evm_panel_suspend(struct platform_device *pdev, | ||
160 | pm_message_t mesg) | ||
161 | { | ||
162 | return 0; | ||
163 | } | ||
164 | |||
165 | static int omap3evm_panel_resume(struct platform_device *pdev) | ||
166 | { | ||
167 | return 0; | ||
168 | } | ||
169 | |||
170 | struct platform_driver omap3evm_panel_driver = { | ||
171 | .probe = omap3evm_panel_probe, | ||
172 | .remove = omap3evm_panel_remove, | ||
173 | .suspend = omap3evm_panel_suspend, | ||
174 | .resume = omap3evm_panel_resume, | ||
175 | .driver = { | ||
176 | .name = "omap3evm_lcd", | ||
177 | .owner = THIS_MODULE, | ||
178 | }, | ||
179 | }; | ||
180 | |||
181 | static int __init omap3evm_panel_drv_init(void) | ||
182 | { | ||
183 | return platform_driver_register(&omap3evm_panel_driver); | ||
184 | } | ||
185 | |||
186 | static void __exit omap3evm_panel_drv_exit(void) | ||
187 | { | ||
188 | platform_driver_unregister(&omap3evm_panel_driver); | ||
189 | } | ||
190 | |||
191 | module_init(omap3evm_panel_drv_init); | ||
192 | module_exit(omap3evm_panel_drv_exit); | ||