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
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* LCD panel support for the TI 2430SDP board
*
* Copyright (C) 2007 MontaVista
* Author: Hunyue Yau <hyau@mvista.com>
*
* 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/delay.h>
#include <linux/gpio.h>
#include <linux/i2c/twl.h>
#include <plat/mux.h>
#include <asm/mach-types.h>
#include "omapfb.h"
#define SDP2430_LCD_PANEL_BACKLIGHT_GPIO 91
#define SDP2430_LCD_PANEL_ENABLE_GPIO 154
#define SDP3430_LCD_PANEL_BACKLIGHT_GPIO 24
#define SDP3430_LCD_PANEL_ENABLE_GPIO 28
static unsigned backlight_gpio;
static unsigned enable_gpio;
#define LCD_PIXCLOCK_MAX 5400 /* freq 5.4 MHz */
#define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
#define ENABLE_VAUX2_DEDICATED 0x09
#define ENABLE_VAUX2_DEV_GRP 0x20
#define ENABLE_VAUX3_DEDICATED 0x03
#define ENABLE_VAUX3_DEV_GRP 0x20
#define ENABLE_VPLL2_DEDICATED 0x05
#define ENABLE_VPLL2_DEV_GRP 0xE0
#define TWL4030_VPLL2_DEV_GRP 0x33
#define TWL4030_VPLL2_DEDICATED 0x36
#define t2_out(c, r, v) twl4030_i2c_write_u8(c, r, v)
static int sdp2430_panel_init(struct lcd_panel *panel,
struct omapfb_device *fbdev)
{
if (machine_is_omap_3430sdp()) {
enable_gpio = SDP3430_LCD_PANEL_ENABLE_GPIO;
backlight_gpio = SDP3430_LCD_PANEL_BACKLIGHT_GPIO;
} else {
enable_gpio = SDP2430_LCD_PANEL_ENABLE_GPIO;
backlight_gpio = SDP2430_LCD_PANEL_BACKLIGHT_GPIO;
}
gpio_request(enable_gpio, "LCD enable"); /* LCD panel */
gpio_request(backlight_gpio, "LCD bl"); /* LCD backlight */
gpio_direction_output(enable_gpio, 0);
gpio_direction_output(backlight_gpio, 0);
return 0;
}
static void sdp2430_panel_cleanup(struct lcd_panel *panel)
{
gpio_free(backlight_gpio);
gpio_free(enable_gpio);
}
static int sdp2430_panel_enable(struct lcd_panel *panel)
{
u8 ded_val, ded_reg;
u8 grp_val, grp_reg;
if (machine_is_omap_3430sdp()) {
ded_reg = TWL4030_VAUX3_DEDICATED;
ded_val = ENABLE_VAUX3_DEDICATED;
grp_reg = TWL4030_VAUX3_DEV_GRP;
grp_val = ENABLE_VAUX3_DEV_GRP;
if (omap_rev() > OMAP3430_REV_ES1_0) {
t2_out(PM_RECEIVER, ENABLE_VPLL2_DEDICATED,
TWL4030_VPLL2_DEDICATED);
t2_out(PM_RECEIVER, ENABLE_VPLL2_DEV_GRP,
TWL4030_VPLL2_DEV_GRP);
}
} else {
ded_reg = TWL4030_VAUX2_DEDICATED;
ded_val = ENABLE_VAUX2_DEDICATED;
grp_reg = TWL4030_VAUX2_DEV_GRP;
grp_val = ENABLE_VAUX2_DEV_GRP;
}
gpio_set_value(enable_gpio, 1);
gpio_set_value(backlight_gpio, 1);
if (0 != t2_out(PM_RECEIVER, ded_val, ded_reg))
return -EIO;
if (0 != t2_out(PM_RECEIVER, grp_val, grp_reg))
return -EIO;
return 0;
}
static void sdp2430_panel_disable(struct lcd_panel *panel)
{
gpio_set_value(enable_gpio, 0);
gpio_set_value(backlight_gpio, 0);
if (omap_rev() > OMAP3430_REV_ES1_0) {
t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEDICATED);
t2_out(PM_RECEIVER, 0x0, TWL4030_VPLL2_DEV_GRP);
msleep(4);
}
}
static unsigned long sdp2430_panel_get_caps(struct lcd_panel *panel)
{
return 0;
}
struct lcd_panel sdp2430_panel = {
.name = "sdp2430",
.config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
OMAP_LCDC_INV_HSYNC,
.bpp = 16,
.data_lines = 16,
.x_res = 240,
.y_res = 320,
.hsw = 3, /* hsync_len (4) - 1 */
.hfp = 3, /* right_margin (4) - 1 */
.hbp = 39, /* left_margin (40) - 1 */
.vsw = 1, /* vsync_len (2) - 1 */
.vfp = 2, /* lower_margin */
.vbp = 7, /* upper_margin (8) - 1 */
.pixel_clock = LCD_PIXCLOCK_MAX,
.init = sdp2430_panel_init,
.cleanup = sdp2430_panel_cleanup,
.enable = sdp2430_panel_enable,
.disable = sdp2430_panel_disable,
.get_caps = sdp2430_panel_get_caps,
};
static int sdp2430_panel_probe(struct platform_device *pdev)
{
omapfb_register_panel(&sdp2430_panel);
return 0;
}
static int sdp2430_panel_remove(struct platform_device *pdev)
{
return 0;
}
static int sdp2430_panel_suspend(struct platform_device *pdev,
pm_message_t mesg)
{
return 0;
}
static int sdp2430_panel_resume(struct platform_device *pdev)
{
return 0;
}
struct platform_driver sdp2430_panel_driver = {
.probe = sdp2430_panel_probe,
.remove = sdp2430_panel_remove,
.suspend = sdp2430_panel_suspend,
.resume = sdp2430_panel_resume,
.driver = {
.name = "sdp2430_lcd",
.owner = THIS_MODULE,
},
};
static int __init sdp2430_panel_drv_init(void)
{
return platform_driver_register(&sdp2430_panel_driver);
}
static void __exit sdp2430_panel_drv_exit(void)
{
platform_driver_unregister(&sdp2430_panel_driver);
}
module_init(sdp2430_panel_drv_init);
module_exit(sdp2430_panel_drv_exit);
|
