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