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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 323a6d691079bd15f0a9c0c9607bebadf958cd16 / . / board / gdsys / common / adv7611.c
blob: b728274cce6d8eed98ecdb0cd0e6080d3fdab127 [file] [log] [blame]
Dirk Eibacha3f9d6c2015-10-28 11:46:32 +0100[diff] [blame]1/*
2 * (C) Copyright 2014
3 * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
9#include <i2c.h>
10
11#define ADV7611_I2C_ADDR 0x4c
12#define ADV7611_RDINFO 0x2051
13
14/*
15 * ADV7611 I2C Addresses in u-boot notation
16 */
17enum {
18 CP_I2C_ADDR = 0x22,
19 DPLL_I2C_ADDR = 0x26,
20 KSV_I2C_ADDR = 0x32,
21 HDMI_I2C_ADDR = 0x34,
22 EDID_I2C_ADDR = 0x36,
23 INFOFRAME_I2C_ADDR = 0x3e,
24 CEC_I2C_ADDR = 0x40,
25 IO_I2C_ADDR = ADV7611_I2C_ADDR,
26};
27
28/*
29 * Global Control Registers
30 */
31enum {
32 IO_RD_INFO_MSB = 0xea,
33 IO_RD_INFO_LSB = 0xeb,
34 IO_CEC_ADDR = 0xf4,
35 IO_INFOFRAME_ADDR = 0xf5,
36 IO_DPLL_ADDR = 0xf8,
37 IO_KSV_ADDR = 0xf9,
38 IO_EDID_ADDR = 0xfa,
39 IO_HDMI_ADDR = 0xfb,
40 IO_CP_ADDR = 0xfd,
41};
42
43int adv7611_i2c[] = CONFIG_SYS_ADV7611_I2C;
44
45int adv7611_probe(unsigned int screen)
46{
47 int old_bus = i2c_get_bus_num();
48 unsigned int rd_info;
49 int res = 0;
50
51 i2c_set_bus_num(adv7611_i2c[screen]);
52
53 rd_info = (i2c_reg_read(IO_I2C_ADDR, IO_RD_INFO_MSB) << 8)
54 | i2c_reg_read(IO_I2C_ADDR, IO_RD_INFO_LSB);
55
56 if (rd_info != ADV7611_RDINFO) {
57 res = -1;
58 goto out;
59 }
60
61 /*
62 * set I2C addresses to default values
63 */
64 i2c_reg_write(IO_I2C_ADDR, IO_CEC_ADDR, CEC_I2C_ADDR << 1);
65 i2c_reg_write(IO_I2C_ADDR, IO_INFOFRAME_ADDR, INFOFRAME_I2C_ADDR << 1);
66 i2c_reg_write(IO_I2C_ADDR, IO_DPLL_ADDR, DPLL_I2C_ADDR << 1);
67 i2c_reg_write(IO_I2C_ADDR, IO_KSV_ADDR, KSV_I2C_ADDR << 1);
68 i2c_reg_write(IO_I2C_ADDR, IO_EDID_ADDR, EDID_I2C_ADDR << 1);
69 i2c_reg_write(IO_I2C_ADDR, IO_HDMI_ADDR, HDMI_I2C_ADDR << 1);
70 i2c_reg_write(IO_I2C_ADDR, IO_CP_ADDR, CP_I2C_ADDR << 1);
71
72 /*
73 * do magic initialization sequence from
74 * "ADV7611 Register Settings Recommendations Revision 1.5"
75 * with most registers undocumented
76 */
77 i2c_reg_write(CP_I2C_ADDR, 0x6c, 0x00);
78 i2c_reg_write(HDMI_I2C_ADDR, 0x9b, 0x03);
79 i2c_reg_write(HDMI_I2C_ADDR, 0x6f, 0x08);
80 i2c_reg_write(HDMI_I2C_ADDR, 0x85, 0x1f);
81 i2c_reg_write(HDMI_I2C_ADDR, 0x87, 0x70);
82 i2c_reg_write(HDMI_I2C_ADDR, 0x57, 0xda);
83 i2c_reg_write(HDMI_I2C_ADDR, 0x58, 0x01);
84 i2c_reg_write(HDMI_I2C_ADDR, 0x03, 0x98);
85 i2c_reg_write(HDMI_I2C_ADDR, 0x4c, 0x44);
86
87 /*
88 * IO_REG_02, default 0xf0
89 *
90 * INP_COLOR_SPACE (IO, Address 0x02[7:4])
91 * default: 0b1111 auto
92 * set to : 0b0001 force RGB (range 0 to 255) input
93 *
94 * RGB_OUT (IO, Address 0x02[1])
95 * default: 0 YPbPr color space output
96 * set to : 1 RGB color space output
97 */
98 i2c_reg_write(IO_I2C_ADDR, 0x02, 0x12);
99
100 /*
101 * IO_REG_03, default 0x00
102 *
103 * OP_FORMAT_SEL (IO, Address 0x03[7:0])
104 * default: 0x00 8-bit SDR ITU-656 mode
105 * set to : 0x40 24-bit 4:4:4 SDR mode
106 */
107 i2c_reg_write(IO_I2C_ADDR, 0x03, 0x40);
108
109 /*
110 * IO_REG_05, default 0x2c
111 *
112 * AVCODE_INSERT_EN (IO, Address 0x05[2])
113 * default: 1 insert AV codes into data stream
114 * set to : 0 do not insert AV codes into data stream
115 */
116 i2c_reg_write(IO_I2C_ADDR, 0x05, 0x28);
117
118 /*
119 * IO_REG_0C, default 0x62
120 *
121 * POWER_DOWN (IO, Address 0x0C[5])
122 * default: 1 chip is powered down
123 * set to : 0 chip is operational
124 */
125 i2c_reg_write(IO_I2C_ADDR, 0x0c, 0x42);
126
127 /*
128 * IO_REG_15, default 0xbe
129 *
130 * TRI_SYNCS (IO, Address 0x15[3)
131 * TRI_LLC (IO, Address 0x15[2])
132 * TRI_PIX (IO, Address 0x15[1])
133 * default: 1 video output pins are tristate
134 * set to : 0 video output pins are active
135 */
136 i2c_reg_write(IO_I2C_ADDR, 0x15, 0xb0);
137
138 /*
139 * HDMI_REGISTER_02H, default 0xff
140 *
141 * CLOCK_TERMA_DISABLE (HDMI, Address 0x83[0])
142 * default: 1 disable termination
143 * set to : 0 enable termination
144 * Future options are:
145 * - use the chips automatic termination control
146 * - set this manually on cable detect
147 * but at the moment this seems a safe default.
148 */
149 i2c_reg_write(HDMI_I2C_ADDR, 0x83, 0xfe);
150
151 /*
152 * HDMI_CP_CNTRL_1, default 0x01
153 *
154 * HDMI_FRUN_EN (CP, Address 0xBA[0])
155 * default: 1 Enable the free run feature in HDMI mode
156 * set to : 0 Disable the free run feature in HDMI mode
157 */
158 i2c_reg_write(CP_I2C_ADDR, 0xba, 0x00);
159
160 /*
161 * INT1_CONFIGURATION, default 0x20
162 *
163 * INTRQ_DUR_SEL[1:0] (IO, Address 0x40[7:6])
164 * default: 00 Interrupt signal is active for 4 Xtal periods
165 * set to : 11 Active until cleared
166 *
167 * INTRQ_OP_SEL[1:0] (IO, Address 0x40[1:0])
168 * default: 00 Open drain
169 * set to : 10 Drives high when active
170 */
171 i2c_reg_write(IO_I2C_ADDR, 0x40, 0xc2);
172
173out:
174 i2c_set_bus_num(old_bus);
175
176 return res;
177}