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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
#include <console/console.h>
#include <device/i2c.h>
#include <device/device.h>
#include <device/path.h>
#include <stdint.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "chip.h"
#define MAX98390_ACPI_HID "MX98390"
#define MAX98390_DP_INT(key, val) acpi_dp_add_integer(dp, "maxim," key, (val))
static void max98390_fill_ssdt(const struct device *dev)
{
struct drivers_i2c_max98390_config *config = dev->chip_info;
const char *scope = acpi_device_scope(dev);
struct acpi_i2c i2c = {
.address = dev->path.i2c.device,
.mode_10bit = dev->path.i2c.mode_10bit,
.speed = I2C_SPEED_FAST,
.resource = scope,
};
struct acpi_dp *dp = NULL;
uint64_t r0_value, temp_value;
char dsm_name[80] = {};
if (!scope)
return;
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", MAX98390_ACPI_HID);
acpigen_write_name_integer("_UID", config->uid);
acpigen_write_name_string("_DDN", config->desc);
acpigen_write_STA(acpi_device_status(dev));
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_i2c(&i2c);
acpigen_write_resourcetemplate_footer();
/* Device Properties */
if (CONFIG(CHROMEOS_DSM_CALIB)) {
if (get_dsm_calibration_from_key(config->r0_calib_key, &r0_value)
|| get_dsm_calibration_from_key(config->temperature_calib_key,
&temp_value)) {
printk(BIOS_ERR,
"Failed to get dsm_calib parameters from VPD"
" with key %s and %s\n",
config->r0_calib_key, config->temperature_calib_key);
} else {
dp = acpi_dp_new_table("_DSD");
MAX98390_DP_INT("r0_calib", r0_value);
MAX98390_DP_INT("temperature_calib", temp_value);
printk(BIOS_INFO, "set dsm_calib properties\n");
}
}
if (CONFIG(CHROMEOS_DSM_PARAM_FILE_NAME)) {
if (config->dsm_param_file_name) {
if (!dp)
dp = acpi_dp_new_table("_DSD");
size_t chars = snprintf(dsm_name, sizeof(dsm_name), "%s_%s_%s.bin",
config->dsm_param_file_name, CONFIG_MAINBOARD_VENDOR,
CONFIG_MAINBOARD_PART_NUMBER);
if (chars >= sizeof(dsm_name))
printk(BIOS_ERR, "ERROR: String too long in %s\n", __func__);
acpi_dp_add_string(dp, "maxim,dsm_param_name", dsm_name);
}
}
if (dp)
acpi_dp_write(dp);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev), dev->chip_ops->name,
dev->path.i2c.device);
}
static const char *max98390_acpi_name(const struct device *dev)
{
struct drivers_i2c_max98390_config *config = dev->chip_info;
static char name[5];
if (config->name)
return config->name;
snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device);
return name;
}
static struct device_operations max98390_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = max98390_acpi_name,
.acpi_fill_ssdt = max98390_fill_ssdt,
};
static void max98390_enable(struct device *dev)
{
struct drivers_i2c_max98390_config *config = dev->chip_info;
if (!config)
return;
dev->ops = &max98390_ops;
/* Name the device as per description provided in devicetree */
if (config->desc)
dev->name = config->desc;
}
struct chip_operations drivers_i2c_max98390_ops = {
CHIP_NAME("Maxim MAX98390 Codec")
.enable_dev = max98390_enable
};
|
