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authorarun c <arun.edarath@gmail.com>2009-09-22 19:46:47 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 10:39:49 -0400
commit42acff34f85c5892c8c762145441e993a5596a13 (patch)
tree03c0623f72891acd5b24baa96c186ce65201cc6c /drivers/video/omap
parent3a76a819dda9a6de0ab83d04b48b3735a4d10b89 (diff)
omapfb: add support for the OMAP2EVM LCD
omap2evm LCD supports VGA and QVGA resolution, by default its in VGA mode. Fixed-by: Jarkko Nikula <jarkko.nikula@gmail.com> Fixed-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Arun C <arunedarath@mistralsolutions.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/Makefile1
-rw-r--r--drivers/video/omap/lcd_omap2evm.c191
2 files changed, 192 insertions, 0 deletions
diff --git a/drivers/video/omap/Makefile b/drivers/video/omap/Makefile
index 7a37b0396e97..c2475e34424c 100644
--- a/drivers/video/omap/Makefile
+++ b/drivers/video/omap/Makefile
@@ -27,6 +27,7 @@ objs-y$(CONFIG_MACH_OMAP_OSK) += lcd_osk.o
27 27
28objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o 28objs-y$(CONFIG_MACH_OMAP_APOLLON) += lcd_apollon.o
29objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o 29objs-y$(CONFIG_MACH_OMAP_2430SDP) += lcd_2430sdp.o
30objs-y$(CONFIG_MACH_OMAP2EVM) += lcd_omap2evm.o
30objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o 31objs-y$(CONFIG_FB_OMAP_LCD_MIPID) += lcd_mipid.o
31 32
32omapfb-objs := $(objs-yy) 33omapfb-objs := $(objs-yy)
diff --git a/drivers/video/omap/lcd_omap2evm.c b/drivers/video/omap/lcd_omap2evm.c
new file mode 100644
index 000000000000..7a2bbe2ecec3
--- /dev/null
+++ b/drivers/video/omap/lcd_omap2evm.c
@@ -0,0 +1,191 @@
1/*
2 * LCD panel support for the MISTRAL OMAP2EVM board
3 *
4 * Author: Arun C <arunedarath@mistralsolutions.com>
5 *
6 * Derived from drivers/video/omap/lcd_omap3evm.c
7 * Derived from drivers/video/omap/lcd-apollon.c
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/gpio.h>
27#include <linux/i2c/twl4030.h>
28
29#include <mach/mux.h>
30#include <mach/omapfb.h>
31#include <asm/mach-types.h>
32
33#define LCD_PANEL_ENABLE_GPIO 154
34#define LCD_PANEL_LR 128
35#define LCD_PANEL_UD 129
36#define LCD_PANEL_INI 152
37#define LCD_PANEL_QVGA 148
38#define LCD_PANEL_RESB 153
39
40#define TWL_LED_LEDEN 0x00
41#define TWL_PWMA_PWMAON 0x00
42#define TWL_PWMA_PWMAOFF 0x01
43
44static unsigned int bklight_level;
45
46static int omap2evm_panel_init(struct lcd_panel *panel,
47 struct omapfb_device *fbdev)
48{
49 gpio_request(LCD_PANEL_ENABLE_GPIO, "LCD enable");
50 gpio_request(LCD_PANEL_LR, "LCD lr");
51 gpio_request(LCD_PANEL_UD, "LCD ud");
52 gpio_request(LCD_PANEL_INI, "LCD ini");
53 gpio_request(LCD_PANEL_QVGA, "LCD qvga");
54 gpio_request(LCD_PANEL_RESB, "LCD resb");
55
56 gpio_direction_output(LCD_PANEL_ENABLE_GPIO, 1);
57 gpio_direction_output(LCD_PANEL_RESB, 1);
58 gpio_direction_output(LCD_PANEL_INI, 1);
59 gpio_direction_output(LCD_PANEL_QVGA, 0);
60 gpio_direction_output(LCD_PANEL_LR, 1);
61 gpio_direction_output(LCD_PANEL_UD, 1);
62
63 twl4030_i2c_write_u8(TWL4030_MODULE_LED, 0x11, TWL_LED_LEDEN);
64 twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON);
65 twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF);
66 bklight_level = 100;
67
68 return 0;
69}
70
71static void omap2evm_panel_cleanup(struct lcd_panel *panel)
72{
73 gpio_free(LCD_PANEL_RESB);
74 gpio_free(LCD_PANEL_QVGA);
75 gpio_free(LCD_PANEL_INI);
76 gpio_free(LCD_PANEL_UD);
77 gpio_free(LCD_PANEL_LR);
78 gpio_free(LCD_PANEL_ENABLE_GPIO);
79}
80
81static int omap2evm_panel_enable(struct lcd_panel *panel)
82{
83 gpio_set_value(LCD_PANEL_ENABLE_GPIO, 0);
84 return 0;
85}
86
87static void omap2evm_panel_disable(struct lcd_panel *panel)
88{
89 gpio_set_value(LCD_PANEL_ENABLE_GPIO, 1);
90}
91
92static unsigned long omap2evm_panel_get_caps(struct lcd_panel *panel)
93{
94 return 0;
95}
96
97static int omap2evm_bklight_setlevel(struct lcd_panel *panel,
98 unsigned int level)
99{
100 u8 c;
101 if ((level >= 0) && (level <= 100)) {
102 c = (125 * (100 - level)) / 100 + 2;
103 twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, c, TWL_PWMA_PWMAOFF);
104 bklight_level = level;
105 }
106 return 0;
107}
108
109static unsigned int omap2evm_bklight_getlevel(struct lcd_panel *panel)
110{
111 return bklight_level;
112}
113
114static unsigned int omap2evm_bklight_getmaxlevel(struct lcd_panel *panel)
115{
116 return 100;
117}
118
119struct lcd_panel omap2evm_panel = {
120 .name = "omap2evm",
121 .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
122 OMAP_LCDC_INV_HSYNC,
123
124 .bpp = 16,
125 .data_lines = 18,
126 .x_res = 480,
127 .y_res = 640,
128 .hsw = 3,
129 .hfp = 0,
130 .hbp = 28,
131 .vsw = 2,
132 .vfp = 1,
133 .vbp = 0,
134
135 .pixel_clock = 20000,
136
137 .init = omap2evm_panel_init,
138 .cleanup = omap2evm_panel_cleanup,
139 .enable = omap2evm_panel_enable,
140 .disable = omap2evm_panel_disable,
141 .get_caps = omap2evm_panel_get_caps,
142 .set_bklight_level = omap2evm_bklight_setlevel,
143 .get_bklight_level = omap2evm_bklight_getlevel,
144 .get_bklight_max = omap2evm_bklight_getmaxlevel,
145};
146
147static int omap2evm_panel_probe(struct platform_device *pdev)
148{
149 omapfb_register_panel(&omap2evm_panel);
150 return 0;
151}
152
153static int omap2evm_panel_remove(struct platform_device *pdev)
154{
155 return 0;
156}
157
158static int omap2evm_panel_suspend(struct platform_device *pdev,
159 pm_message_t mesg)
160{
161 return 0;
162}
163
164static int omap2evm_panel_resume(struct platform_device *pdev)
165{
166 return 0;
167}
168
169struct platform_driver omap2evm_panel_driver = {
170 .probe = omap2evm_panel_probe,
171 .remove = omap2evm_panel_remove,
172 .suspend = omap2evm_panel_suspend,
173 .resume = omap2evm_panel_resume,
174 .driver = {
175 .name = "omap2evm_lcd",
176 .owner = THIS_MODULE,
177 },
178};
179
180static int __init omap2evm_panel_drv_init(void)
181{
182 return platform_driver_register(&omap2evm_panel_driver);
183}
184
185static void __exit omap2evm_panel_drv_exit(void)
186{
187 platform_driver_unregister(&omap2evm_panel_driver);
188}
189
190module_init(omap2evm_panel_drv_init);
191module_exit(omap2evm_panel_drv_exit);