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git01.mediatek.com / filogic / uboot / 7d6dc602a6d80fb6b61d83a112aa1a0523cbfeb8 / . / drivers / video / ld9040.c
blob: 23fe783c8844e7d5a994166279bf4d907293e9cb [file] [log] [blame]
Piotr Wilczekc1ea2e12012-10-19 05:34:05 +0000[diff] [blame]1/*
2 * ld9040 AMOLED LCD panel driver.
3 *
4 * Copyright (C) 2012 Samsung Electronics
5 * Donghwa Lee <dh09.lee@samsung.com>
6 *
Wolfgang Denkd79de1d2013-07-08 09:37:19 +0200[diff] [blame]7 * SPDX-License-Identifier: GPL-2.0+
Piotr Wilczekc1ea2e12012-10-19 05:34:05 +0000[diff] [blame]8 */
9
10#include <common.h>
11#include <spi.h>
12
13static const unsigned char SEQ_SWRESET[] = {
14 0x01,
15};
16
17static const unsigned char SEQ_USER_SETTING[] = {
18 0xF0, 0x5A, 0x5A
19};
20
21static const unsigned char SEQ_ELVSS_ON[] = {
22 0xB1, 0x0D, 0x00, 0x16,
23};
24
25static const unsigned char SEQ_TEMP_SWIRE[] = {
26 0xB2, 0x06, 0x06, 0x06, 0x06,
27};
28
29static const unsigned char SEQ_GTCON[] = {
30 0xF7, 0x09, 0x00, 0x00,
31};
32
33static const unsigned char SEQ_PANEL_CONDITION[] = {
34 0xF8, 0x05, 0x65, 0x96, 0x71, 0x7D, 0x19, 0x3B,
35 0x0D, 0x19, 0x7E, 0x0D, 0xE2, 0x00, 0x00, 0x7E,
36 0x7D, 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02,
37};
38
39static const unsigned char SEQ_GAMMA_SET1[] = {
40 0xF9, 0x00, 0xA7, 0xB4, 0xAE, 0xBF, 0x00, 0x91,
41 0x00, 0xB2, 0xB4, 0xAA, 0xBB, 0x00, 0xAC, 0x00,
42 0xB3, 0xB1, 0xAA, 0xBC, 0x00, 0xB3,
43};
44
45static const unsigned char SEQ_GAMMA_CTRL[] = {
46 0xFB, 0x02, 0x5A,
47};
48
49static const unsigned char SEQ_APON[] = {
50 0xF3, 0x00, 0x00, 0x00, 0x0A, 0x02,
51};
52
53static const unsigned char SEQ_DISPCTL[] = {
54 0xF2, 0x02, 0x08, 0x08, 0x10, 0x10,
55};
56
57static const unsigned char SEQ_MANPWR[] = {
58 0xB0, 0x04,
59};
60
61static const unsigned char SEQ_PWR_CTRL[] = {
62 0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88,
63};
64
65static const unsigned char SEQ_SLPOUT[] = {
66 0x11,
67};
68
69static const unsigned char SEQ_SLPIN[] = {
70 0x10,
71};
72
73static const unsigned char SEQ_DISPON[] = {
74 0x29,
75};
76
77static const unsigned char SEQ_DISPOFF[] = {
78 0x28,
79};
80
81static void ld9040_spi_write(const unsigned char *wbuf, unsigned int size_cmd)
82{
83 int i = 0;
84
85 /*
86 * Data are transmitted in 9-bit words:
87 * the first bit is command/parameter, the other are the value.
88 * The value's LSB is shifted to MSB position, to be sent as 9th bit
89 */
90
91 unsigned int data_out = 0, data_in = 0;
92 for (i = 0; i < size_cmd; i++) {
93 data_out = wbuf[i] >> 1;
94 if (i != 0)
95 data_out += 0x0080;
96 if (wbuf[i] & 0x01)
97 data_out += 0x8000;
98 spi_xfer(NULL, 9, &data_out, &data_in, SPI_XFER_BEGIN);
99 }
100}
101
102void ld9040_cfg_ldo(void)
103{
104 udelay(10);
105
106 ld9040_spi_write(SEQ_USER_SETTING,
107 ARRAY_SIZE(SEQ_USER_SETTING));
108 ld9040_spi_write(SEQ_PANEL_CONDITION,
109 ARRAY_SIZE(SEQ_PANEL_CONDITION));
110 ld9040_spi_write(SEQ_DISPCTL, ARRAY_SIZE(SEQ_DISPCTL));
111 ld9040_spi_write(SEQ_MANPWR, ARRAY_SIZE(SEQ_MANPWR));
112 ld9040_spi_write(SEQ_PWR_CTRL, ARRAY_SIZE(SEQ_PWR_CTRL));
113 ld9040_spi_write(SEQ_ELVSS_ON, ARRAY_SIZE(SEQ_ELVSS_ON));
114 ld9040_spi_write(SEQ_GTCON, ARRAY_SIZE(SEQ_GTCON));
115 ld9040_spi_write(SEQ_GAMMA_SET1, ARRAY_SIZE(SEQ_GAMMA_SET1));
116 ld9040_spi_write(SEQ_GAMMA_CTRL, ARRAY_SIZE(SEQ_GAMMA_CTRL));
117 ld9040_spi_write(SEQ_SLPOUT, ARRAY_SIZE(SEQ_SLPOUT));
118
119 udelay(120);
120}
121
122void ld9040_enable_ldo(unsigned int onoff)
123{
124 if (onoff)
125 ld9040_spi_write(SEQ_DISPON, ARRAY_SIZE(SEQ_DISPON));
126 else
127 ld9040_spi_write(SEQ_DISPOFF, ARRAY_SIZE(SEQ_DISPOFF));
128}