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
|
/*
* ld9040 AMOLED LCD panel driver.
*
* Copyright (C) 2012 Samsung Electronics
* Donghwa Lee <dh09.lee@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <common.h>
#include <spi.h>
static const unsigned char SEQ_SWRESET[] = {
0x01,
};
static const unsigned char SEQ_USER_SETTING[] = {
0xF0, 0x5A, 0x5A
};
static const unsigned char SEQ_ELVSS_ON[] = {
0xB1, 0x0D, 0x00, 0x16,
};
static const unsigned char SEQ_TEMP_SWIRE[] = {
0xB2, 0x06, 0x06, 0x06, 0x06,
};
static const unsigned char SEQ_GTCON[] = {
0xF7, 0x09, 0x00, 0x00,
};
static const unsigned char SEQ_PANEL_CONDITION[] = {
0xF8, 0x05, 0x65, 0x96, 0x71, 0x7D, 0x19, 0x3B,
0x0D, 0x19, 0x7E, 0x0D, 0xE2, 0x00, 0x00, 0x7E,
0x7D, 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02,
};
static const unsigned char SEQ_GAMMA_SET1[] = {
0xF9, 0x00, 0xA7, 0xB4, 0xAE, 0xBF, 0x00, 0x91,
0x00, 0xB2, 0xB4, 0xAA, 0xBB, 0x00, 0xAC, 0x00,
0xB3, 0xB1, 0xAA, 0xBC, 0x00, 0xB3,
};
static const unsigned char SEQ_GAMMA_CTRL[] = {
0xFB, 0x02, 0x5A,
};
static const unsigned char SEQ_APON[] = {
0xF3, 0x00, 0x00, 0x00, 0x0A, 0x02,
};
static const unsigned char SEQ_DISPCTL[] = {
0xF2, 0x02, 0x08, 0x08, 0x10, 0x10,
};
static const unsigned char SEQ_MANPWR[] = {
0xB0, 0x04,
};
static const unsigned char SEQ_PWR_CTRL[] = {
0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88,
};
static const unsigned char SEQ_SLPOUT[] = {
0x11,
};
static const unsigned char SEQ_SLPIN[] = {
0x10,
};
static const unsigned char SEQ_DISPON[] = {
0x29,
};
static const unsigned char SEQ_DISPOFF[] = {
0x28,
};
static void ld9040_spi_write(const unsigned char *wbuf, unsigned int size_cmd)
{
int i = 0;
/*
* Data are transmitted in 9-bit words:
* the first bit is command/parameter, the other are the value.
* The value's LSB is shifted to MSB position, to be sent as 9th bit
*/
unsigned int data_out = 0, data_in = 0;
for (i = 0; i < size_cmd; i++) {
data_out = wbuf[i] >> 1;
if (i != 0)
data_out += 0x0080;
if (wbuf[i] & 0x01)
data_out += 0x8000;
spi_xfer(NULL, 9, &data_out, &data_in, SPI_XFER_BEGIN);
}
}
void ld9040_cfg_ldo(void)
{
udelay(10);
ld9040_spi_write(SEQ_USER_SETTING,
ARRAY_SIZE(SEQ_USER_SETTING));
ld9040_spi_write(SEQ_PANEL_CONDITION,
ARRAY_SIZE(SEQ_PANEL_CONDITION));
ld9040_spi_write(SEQ_DISPCTL, ARRAY_SIZE(SEQ_DISPCTL));
ld9040_spi_write(SEQ_MANPWR, ARRAY_SIZE(SEQ_MANPWR));
ld9040_spi_write(SEQ_PWR_CTRL, ARRAY_SIZE(SEQ_PWR_CTRL));
ld9040_spi_write(SEQ_ELVSS_ON, ARRAY_SIZE(SEQ_ELVSS_ON));
ld9040_spi_write(SEQ_GTCON, ARRAY_SIZE(SEQ_GTCON));
ld9040_spi_write(SEQ_GAMMA_SET1, ARRAY_SIZE(SEQ_GAMMA_SET1));
ld9040_spi_write(SEQ_GAMMA_CTRL, ARRAY_SIZE(SEQ_GAMMA_CTRL));
ld9040_spi_write(SEQ_SLPOUT, ARRAY_SIZE(SEQ_SLPOUT));
udelay(120);
}
void ld9040_enable_ldo(unsigned int onoff)
{
if (onoff)
ld9040_spi_write(SEQ_DISPON, ARRAY_SIZE(SEQ_DISPON));
else
ld9040_spi_write(SEQ_DISPOFF, ARRAY_SIZE(SEQ_DISPOFF));
}
|
