projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| eed29742 PW |
1 | /* |
| 2 | * ld9040 AMOLED LCD panel driver. | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Samsung Electronics | |
| 5 | * Donghwa Lee <[email protected]> | |
| 6 | * | |
| 1a459660 | 7 | * SPDX-License-Identifier: GPL-2.0+ |
| eed29742 PW |
8 | */ |
| 9 | ||
| 10 | #include <common.h> | |
| 11 | #include <spi.h> | |
| 12 | ||
| 13 | static const unsigned char SEQ_SWRESET[] = { | |
| 14 | 0x01, | |
| 15 | }; | |
| 16 | ||
| 17 | static const unsigned char SEQ_USER_SETTING[] = { | |
| 18 | 0xF0, 0x5A, 0x5A | |
| 19 | }; | |
| 20 | ||
| 21 | static const unsigned char SEQ_ELVSS_ON[] = { | |
| 22 | 0xB1, 0x0D, 0x00, 0x16, | |
| 23 | }; | |
| 24 | ||
| 25 | static const unsigned char SEQ_TEMP_SWIRE[] = { | |
| 26 | 0xB2, 0x06, 0x06, 0x06, 0x06, | |
| 27 | }; | |
| 28 | ||
| 29 | static const unsigned char SEQ_GTCON[] = { | |
| 30 | 0xF7, 0x09, 0x00, 0x00, | |
| 31 | }; | |
| 32 | ||
| 33 | static 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 | ||
| 39 | static 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 | ||
| 45 | static const unsigned char SEQ_GAMMA_CTRL[] = { | |
| 46 | 0xFB, 0x02, 0x5A, | |
| 47 | }; | |
| 48 | ||
| 49 | static const unsigned char SEQ_APON[] = { | |
| 50 | 0xF3, 0x00, 0x00, 0x00, 0x0A, 0x02, | |
| 51 | }; | |
| 52 | ||
| 53 | static const unsigned char SEQ_DISPCTL[] = { | |
| 54 | 0xF2, 0x02, 0x08, 0x08, 0x10, 0x10, | |
| 55 | }; | |
| 56 | ||
| 57 | static const unsigned char SEQ_MANPWR[] = { | |
| 58 | 0xB0, 0x04, | |
| 59 | }; | |
| 60 | ||
| 61 | static const unsigned char SEQ_PWR_CTRL[] = { | |
| 62 | 0xF4, 0x0A, 0x87, 0x25, 0x6A, 0x44, 0x02, 0x88, | |
| 63 | }; | |
| 64 | ||
| 65 | static const unsigned char SEQ_SLPOUT[] = { | |
| 66 | 0x11, | |
| 67 | }; | |
| 68 | ||
| 69 | static const unsigned char SEQ_SLPIN[] = { | |
| 70 | 0x10, | |
| 71 | }; | |
| 72 | ||
| 73 | static const unsigned char SEQ_DISPON[] = { | |
| 74 | 0x29, | |
| 75 | }; | |
| 76 | ||
| 77 | static const unsigned char SEQ_DISPOFF[] = { | |
| 78 | 0x28, | |
| 79 | }; | |
| 80 | ||
| 81 | static 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 | ||
| 102 | void 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 | ||
| 122 | void 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 | } |