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/device.h>
7 #include <stdio.h>
8
9 #include "chip.h"
10
11 #define RT5645_ACPI_NAME "RT58"
12 #define RT5645_ACPI_HID "10EC5650"
13
14 #define RT5645_DP_INT(key, val) \
15 acpi_dp_add_integer(dp, "realtek," key, (val))
16
rt5645_fill_ssdt(const struct device * dev)17 static void rt5645_fill_ssdt(const struct device *dev)
18 {
19 struct drivers_i2c_rt5645_config *config = dev->chip_info;
20 const char *path;
21 const char *scope = acpi_device_scope(dev);
22 int cbj_sleeve_index = -1, irq_gpio_index = -1, hp_detect_index = -1;
23 struct acpi_i2c i2c = {
24 .address = dev->path.i2c.device,
25 .mode_10bit = dev->path.i2c.mode_10bit,
26 .speed = config->bus_speed ? : I2C_SPEED_FAST,
27 .resource = scope,
28 };
29 struct acpi_dp *dp;
30 int curr_index = 0;
31
32 if (!config)
33 return;
34
35 const char *name = acpi_device_name(dev);
36 if (!scope || !name)
37 return;
38
39 /* Device */
40 acpigen_write_scope(scope);
41 acpigen_write_device(name);
42
43 if (config->hid)
44 acpigen_write_name_string("_HID", config->hid);
45 else
46 acpigen_write_name_string("_HID", RT5645_ACPI_HID);
47 acpigen_write_name_integer("_UID", 0);
48 if (config->desc)
49 acpigen_write_name_string("_DDN", config->desc);
50 /* Hide the device because of Microsoft Windows */
51 acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON);
52
53 /* Resources */
54 acpigen_write_name("_CRS");
55 acpigen_write_resourcetemplate_header();
56 acpi_device_write_i2c(&i2c);
57
58 /* Use either Interrupt() or GpioInt() */
59 if (config->irq_gpio.pin_count)
60 irq_gpio_index = acpi_device_write_dsd_gpio(&config->irq_gpio,
61 &curr_index);
62 else
63 acpi_device_write_interrupt(&config->irq);
64
65 /* Add I2C GPIO index */
66 cbj_sleeve_index = acpi_device_write_dsd_gpio(&config->cbj_sleeve,
67 &curr_index);
68 hp_detect_index = acpi_device_write_dsd_gpio(&config->hp_detect,
69 &curr_index);
70 acpigen_write_resourcetemplate_footer();
71
72 /* _DSD for devicetree properties */
73 /* This points to the first pin in the first gpio entry in _CRS */
74 path = acpi_device_path(dev);
75 dp = acpi_dp_new_table("_DSD");
76 if (config->irq_gpio.pin_count)
77 acpi_dp_add_gpio(dp, "irq-gpios", path, irq_gpio_index, 0,
78 config->irq_gpio.active_low);
79 if (config->cbj_sleeve.pin_count)
80 acpi_dp_add_gpio(dp, "cbj-sleeve-gpios", path, cbj_sleeve_index, 0,
81 config->cbj_sleeve.active_low);
82 if (config->hp_detect.pin_count)
83 acpi_dp_add_gpio(dp, "hp-detect-gpios", path, hp_detect_index, 0,
84 config->hp_detect.active_low);
85 RT5645_DP_INT("jd-mode", config->jd_mode);
86 acpi_dp_write(dp);
87
88 acpigen_pop_len(); /* Device */
89 acpigen_pop_len(); /* Scope */
90
91 printk(BIOS_INFO, "%s: %s address 0%xh\n", path,
92 config->desc ? : dev->chip_ops->name, dev->path.i2c.device);
93 }
94
rt5645_acpi_name(const struct device * dev)95 static const char *rt5645_acpi_name(const struct device *dev)
96 {
97 struct drivers_i2c_rt5645_config *config = dev->chip_info;
98 static char name[5];
99 if (config->name)
100 return config->name;
101
102 snprintf(name, sizeof(name), "D%03.3X", dev->path.i2c.device);
103 return name;
104 }
105
106 static struct device_operations rt5645_ops = {
107 .read_resources = noop_read_resources,
108 .set_resources = noop_set_resources,
109 .acpi_name = rt5645_acpi_name,
110 .acpi_fill_ssdt = rt5645_fill_ssdt,
111 };
112
rt5645_enable(struct device * dev)113 static void rt5645_enable(struct device *dev)
114 {
115 dev->ops = &rt5645_ops;
116 }
117
118 struct chip_operations drivers_i2c_rt5645_ops = {
119 .name = "ASoC RT5645 Codec driver",
120 .enable_dev = rt5645_enable
121 };
122