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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* The boardid.c should provide board_id, sku_id, and ram_code.
* board_id is provided by ec/google/chromeec/ec_boardid.c.
* sku_id and ram_code are defined in this file.
*/
#include <assert.h>
#include <boardid.h>
#include <console/console.h>
#include <delay.h>
#include <device/i2c_simple.h>
#include <drivers/camera/cros_camera.h>
#include <ec/google/chromeec/ec.h>
#include <soc/auxadc_common.h>
#include <soc/i2c.h>
#include <soc/pmic_wrap_common.h>
/* For CBI un-provisioned/corrupted Flapjack board. */
#define FLAPJACK_UNDEF_SKU_ID 0
#define ADC_LEVELS 12
enum {
LCM_ID_CHANNEL = 2, /* ID of LCD Module on schematics. */
RAM_ID_CHANNEL = 3,
SKU_ID_CHANNEL = 4,
};
static const int ram_voltages[ADC_LEVELS] = {
/* ID : Voltage (unit: uV) */
/* 0 : */ 74000,
/* 1 : */ 212000,
/* 2 : */ 319000,
/* 3 : */ 429000,
/* 4 : */ 542000,
/* 5 : */ 666000,
/* 6 : */ 781000,
/* 7 : */ 900000,
/* 8 : */ 1023000,
/* 9 : */ 1137000,
/* 10 : */ 1240000,
/* 11 : */ 1343000,
};
static const int lcm_voltages[ADC_LEVELS] = {
/* ID : Voltage (unit: uV) */
/* 0 : */ 0,
/* 1 : */ 283000,
/* 2 : */ 394000,
/* 3 : */ 503000,
/* 4 : */ 608000,
/* 5 : */ 712000,
/* 6 : */ 823000,
/* 7 : */ 937000,
/* 8 : */ 1046000,
/* 9 : */ 1155000,
/* 10 : */ 1277000,
/* 11 : */ 1434000,
};
static const int *adc_voltages[] = {
[LCM_ID_CHANNEL] = lcm_voltages,
[RAM_ID_CHANNEL] = ram_voltages,
[SKU_ID_CHANNEL] = ram_voltages, /* SKU ID is sharing RAM voltages. */
};
static uint32_t get_adc_index(unsigned int channel)
{
int value = auxadc_get_voltage_uv(channel);
assert(channel < ARRAY_SIZE(adc_voltages));
const int *voltages = adc_voltages[channel];
assert(voltages);
/* Find the closest voltage */
uint32_t id;
for (id = 0; id < ADC_LEVELS - 1; id++)
if (value < (voltages[id] + voltages[id + 1]) / 2)
break;
printk(BIOS_DEBUG, "ADC[%d]: Raw value=%d ID=%d\n", channel, value, id);
return id;
}
static uint8_t eeprom_random_read(uint8_t bus, uint8_t slave, uint16_t offset,
uint8_t *data, uint16_t len)
{
struct i2c_msg seg[2];
uint8_t address[2];
address[0] = offset >> 8;
address[1] = offset & 0xff;
seg[0].flags = 0;
seg[0].slave = slave;
seg[0].buf = address;
seg[0].len = sizeof(address);
seg[1].flags = I2C_M_RD;
seg[1].slave = slave;
seg[1].buf = data;
seg[1].len = len;
return i2c_transfer(bus, seg, ARRAY_SIZE(seg));
}
/* Regulator for world facing camera. */
#define PMIC_LDO_VCAMIO_CON0 0x1cb0
#define CROS_CAMERA_INFO_OFFSET 0x1f80
#define MT8183_FORMAT 0x8183
#define KODAMA_PID 0x00c7
/* Returns the ID for world facing camera. */
static uint8_t wfc_id(void)
{
if (!CONFIG(BOARD_GOOGLE_KODAMA))
return 0;
int i, ret;
uint8_t bus = 2;
uint8_t dev_addr = 0x50; /* at24c32/64 device address */
struct cros_camera_info data = {0};
const uint16_t sensor_pids[] = {
[0] = 0x5965, /* OV5965 */
[1] = 0x5035, /* GC5035 */
};
mtk_i2c_bus_init(bus);
/* Turn on camera sensor EEPROM */
pwrap_write(PMIC_LDO_VCAMIO_CON0, 0x1);
udelay(270);
ret = eeprom_random_read(bus, dev_addr, CROS_CAMERA_INFO_OFFSET,
(uint8_t *)&data, sizeof(data));
pwrap_write(PMIC_LDO_VCAMIO_CON0, 0x0);
if (ret) {
printk(BIOS_ERR,
"Failed to read from EEPROM; using default WFC id 0\n");
return 0;
}
if (check_cros_camera_info(&data)) {
printk(BIOS_ERR,
"Failed to check camera info; using default WFC id 0\n");
return 0;
}
if (data.data_format != MT8183_FORMAT) {
printk(BIOS_ERR, "Incompatible camera format: %#04x\n",
data.data_format);
return 0;
}
if (data.module_pid != KODAMA_PID) {
printk(BIOS_ERR, "Incompatible module pid: %#04x\n",
data.module_pid);
return 0;
}
printk(BIOS_DEBUG, "Camera sensor pid: %#04x\n", data.sensor_pid);
for (i = 0; i < ARRAY_SIZE(sensor_pids); i++) {
if (data.sensor_pid == sensor_pids[i]) {
printk(BIOS_INFO, "Detected WFC id: %d\n", i);
return i;
}
}
printk(BIOS_WARNING, "Unknown WFC id; using default id 0\n");
return 0;
}
/* Returns the ID for LCD module (type of panel). */
static uint8_t lcm_id(void)
{
/* LCM is unused on Jacuzzi followers. */
if (CONFIG(BOARD_GOOGLE_JACUZZI_COMMON))
return CONFIG_BOARD_OVERRIDE_LCM_ID;
return get_adc_index(LCM_ID_CHANNEL);
}
uint32_t sku_id(void)
{
static uint32_t cached_sku_id = BOARD_ID_INIT;
if (cached_sku_id != BOARD_ID_INIT)
return cached_sku_id;
/* On Flapjack, getting the SKU via CBI. */
if (CONFIG(BOARD_GOOGLE_FLAPJACK)) {
if (google_chromeec_cbi_get_sku_id(&cached_sku_id))
cached_sku_id = FLAPJACK_UNDEF_SKU_ID;
return cached_sku_id;
}
/* Quirk for Kukui: All Rev1/Sku0 had incorrectly set SKU_ID=1. */
if (CONFIG(BOARD_GOOGLE_KUKUI)) {
if (board_id() == 1) {
cached_sku_id = 0;
return cached_sku_id;
}
}
/*
* The SKU (later used for device tree matching) is combined from:
* World facing camera (WFC) ID.
* ADC2[4bit/H] = straps on LCD module (type of panel).
* ADC4[4bit/L] = SKU ID from board straps.
*/
cached_sku_id = (wfc_id() << 8 |
lcm_id() << 4 |
get_adc_index(SKU_ID_CHANNEL));
return cached_sku_id;
}
uint32_t ram_code(void)
{
static uint32_t cached_ram_code = BOARD_ID_INIT;
if (cached_ram_code == BOARD_ID_INIT) {
cached_ram_code = get_adc_index(RAM_ID_CHANNEL);
/* Model-specific offset - see sdram_configs.c for details. */
cached_ram_code += CONFIG_BOARD_SDRAM_TABLE_OFFSET;
}
return cached_ram_code;
}
|
