1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpi_device.h>
4 #include <acpi/acpigen.h>
5 #include <console/console.h>
6 #include <device/i2c_simple.h>
7 #include <device/device.h>
8 #include "chip.h"
9
10 #define MAX98927_ACPI_NAME "MAXI"
11 #define MAX98927_ACPI_HID "MX98927"
12
max98927_fill_ssdt(const struct device * dev)13 static void max98927_fill_ssdt(const struct device *dev)
14 {
15 struct drivers_i2c_max98927_config *config = dev->chip_info;
16 const char *scope = acpi_device_scope(dev);
17 struct acpi_i2c i2c = {
18 .address = dev->path.i2c.device,
19 .mode_10bit = dev->path.i2c.mode_10bit,
20 .speed = config->bus_speed ? : I2C_SPEED_FAST,
21 .resource = scope,
22 };
23 struct acpi_dp *dp;
24
25 if (!scope)
26 return;
27
28 /* Device */
29 acpigen_write_scope(scope);
30 acpigen_write_device(acpi_device_name(dev));
31 acpigen_write_name_string("_HID", MAX98927_ACPI_HID);
32 acpigen_write_name_integer("_UID", config->uid);
33 if (config->desc)
34 acpigen_write_name_string("_DDN", config->desc);
35 acpigen_write_STA(acpi_device_status(dev));
36
37 /* Resources */
38 acpigen_write_name("_CRS");
39 acpigen_write_resourcetemplate_header();
40 acpi_device_write_i2c(&i2c);
41 acpigen_write_resourcetemplate_footer();
42
43 /* Device Properties */
44 dp = acpi_dp_new_table("_DSD");
45
46 acpi_dp_add_integer(dp, "interleave_mode", config->interleave_mode);
47 acpi_dp_add_integer(dp, "vmon-slot-no", config->vmon_slot_no);
48 acpi_dp_add_integer(dp, "imon-slot-no", config->imon_slot_no);
49
50 acpi_dp_write(dp);
51
52 acpigen_pop_len(); /* Device */
53 acpigen_pop_len(); /* Scope */
54
55 printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
56 dev->chip_ops->name, dev->path.i2c.device);
57 }
58
max98927_acpi_name(const struct device * dev)59 static const char *max98927_acpi_name(const struct device *dev)
60 {
61 struct drivers_i2c_max98927_config *config = dev->chip_info;
62
63 if (config->name)
64 return config->name;
65
66 return MAX98927_ACPI_NAME;
67 }
68
69 static struct device_operations max98927_ops = {
70 .read_resources = noop_read_resources,
71 .set_resources = noop_set_resources,
72 .acpi_name = max98927_acpi_name,
73 .acpi_fill_ssdt = max98927_fill_ssdt,
74 };
75
max98927_enable(struct device * dev)76 static void max98927_enable(struct device *dev)
77 {
78 struct drivers_i2c_max98927_config *config = dev->chip_info;
79
80 dev->ops = &max98927_ops;
81
82 if (config && config->desc) {
83 dev->name = config->desc;
84 }
85 }
86
87 struct chip_operations drivers_i2c_max98927_ops = {
88 .name = "Maxim MAX98927 Codec",
89 .enable_dev = max98927_enable
90 };
91