blob: 937a4113ceb7f999a9e66c9598a18664e5f4ef17 (
plain)
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <ec/google/chromeec/ec.h>
#include <baseboard/variants.h>
#include <variant/sku.h>
#include <string.h>
#include <drivers/i2c/hid/chip.h>
extern struct chip_operations drivers_i2c_generic_ops;
extern struct chip_operations drivers_i2c_da7219_ops;
void variant_devtree_update(void)
{
uint32_t sku = google_chromeec_get_sku_id();
struct device *mmio_dev = NULL, *child = NULL;
struct device *alc_dev = NULL, *da7219_dev = NULL;
while (1) {
mmio_dev = dev_find_path(mmio_dev, DEVICE_PATH_MMIO);
if (mmio_dev == NULL)
break;
if (mmio_dev->path.mmio.addr == 0xfedc2000)
break;
}
if (mmio_dev == NULL)
return;
while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) {
if (child->path.type != DEVICE_PATH_I2C)
continue;
if (child->path.i2c.device != 0x1a)
continue;
if (child->chip_ops == &drivers_i2c_generic_ops) {
struct drivers_i2c_generic_config *config = child->chip_info;
if (!strcmp(config->hid, "10EC5682"))
alc_dev = child;
} else if (child->chip_ops == &drivers_i2c_da7219_ops) {
da7219_dev = child;
}
}
switch (sku) {
default:
/* da7219 only */
if (da7219_dev)
da7219_dev->enabled = 1;
if (alc_dev)
alc_dev->enabled = 0;
break;
case SKU_BARLA_ALC5682_44:
case SKU_BARLA_ALC5682_45:
case SKU_BARLA_ALC5682_46:
case SKU_BARLA_ALC5682_47:
/* alc5682 only */
if (da7219_dev)
da7219_dev->enabled = 0;
if (alc_dev)
alc_dev->enabled = 1;
break;
}
}
|
