2 * ld9040 AMOLED LCD panel driver.
4 * Copyright (C) 2012 Samsung Electronics
5 * Donghwa Lee <dh09.lee@samsung.com>
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 static const unsigned char SEQ_SWRESET[] = {
33 static const unsigned char SEQ_USER_SETTING[] = {
37 static const unsigned char SEQ_ELVSS_ON[] = {
38 0xB1, 0x0D, 0x00, 0x16,
41 static const unsigned char SEQ_TEMP_SWIRE[] = {
42 0xB2, 0x06, 0x06, 0x06, 0x06,
45 static const unsigned char SEQ_GTCON[] = {
46 0xF7, 0x09, 0x00, 0x00,
49 static const unsigned char SEQ_PANEL_CONDITION[] = {
50 0xF8, 0x05, 0x65, 0x96, 0x71, 0x7D, 0x19, 0x3B,
51 0x0D, 0x19, 0x7E, 0x0D, 0xE2, 0x00, 0x00, 0x7E,
52 0x7D, 0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02,
55 static const unsigned char SEQ_GAMMA_SET1[] = {
56 0xF9, 0x00, 0xA7, 0xB4, 0xAE, 0xBF, 0x00, 0x91,
57 0x00, 0xB2, 0xB4, 0xAA, 0xBB, 0x00, 0xAC, 0x00,
58 0xB3, 0xB1, 0xAA, 0xBC, 0x00, 0xB3,
61 static const unsigned char SEQ_GAMMA_CTRL[] = {
65 static const unsigned char SEQ_APON[] = {
66 0xF3, 0x00, 0x00, 0x00, 0x0A, 0x02,
69 static const unsigned char SEQ_DISPCTL[] = {
70 0xF2, 0x02, 0x08, 0x08, 0x10, 0x10,
73 static const unsigned char SEQ_MANPWR[] = {
77 static const unsigned char SEQ_PWR_CTRL[] = {
78 0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88,
81 static const unsigned char SEQ_SLPOUT[] = {
85 static const unsigned char SEQ_SLPIN[] = {
89 static const unsigned char SEQ_DISPON[] = {
93 static const unsigned char SEQ_DISPOFF[] = {
97 static void ld9040_spi_write(const unsigned char *wbuf, unsigned int size_cmd)
102 * Data are transmitted in 9-bit words:
103 * the first bit is command/parameter, the other are the value.
104 * The value's LSB is shifted to MSB position, to be sent as 9th bit
107 unsigned int data_out = 0, data_in = 0;
108 for (i = 0; i < size_cmd; i++) {
109 data_out = wbuf[i] >> 1;
114 spi_xfer(NULL, 9, &data_out, &data_in, SPI_XFER_BEGIN);
118 void ld9040_cfg_ldo(void)
122 ld9040_spi_write(SEQ_USER_SETTING,
123 ARRAY_SIZE(SEQ_USER_SETTING));
124 ld9040_spi_write(SEQ_PANEL_CONDITION,
125 ARRAY_SIZE(SEQ_PANEL_CONDITION));
126 ld9040_spi_write(SEQ_DISPCTL, ARRAY_SIZE(SEQ_DISPCTL));
127 ld9040_spi_write(SEQ_MANPWR, ARRAY_SIZE(SEQ_MANPWR));
128 ld9040_spi_write(SEQ_PWR_CTRL, ARRAY_SIZE(SEQ_PWR_CTRL));
129 ld9040_spi_write(SEQ_ELVSS_ON, ARRAY_SIZE(SEQ_ELVSS_ON));
130 ld9040_spi_write(SEQ_GTCON, ARRAY_SIZE(SEQ_GTCON));
131 ld9040_spi_write(SEQ_GAMMA_SET1, ARRAY_SIZE(SEQ_GAMMA_SET1));
132 ld9040_spi_write(SEQ_GAMMA_CTRL, ARRAY_SIZE(SEQ_GAMMA_CTRL));
133 ld9040_spi_write(SEQ_SLPOUT, ARRAY_SIZE(SEQ_SLPOUT));
138 void ld9040_enable_ldo(unsigned int onoff)
141 ld9040_spi_write(SEQ_DISPON, ARRAY_SIZE(SEQ_DISPON));
143 ld9040_spi_write(SEQ_DISPOFF, ARRAY_SIZE(SEQ_DISPOFF));