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 "chip.h"
 8  
 9  static void alc1015_fill_ssdt(const struct device *dev)
10  {
11  	struct drivers_generic_alc1015_config *config = dev->chip_info;
12  	const char *path;
13  	struct acpi_dp *dp;
14  
15  	if (!config)
16  		return;
17  
18  	const char *scope = acpi_device_scope(dev);
19  	const char *name = acpi_device_name(dev);
20  	if (!scope || !name)
21  		return;
22  
23  	/* Device */
24  	acpigen_write_scope(scope);
25  	acpigen_write_device(name);
26  
27  	if (config->hid)
28  		acpigen_write_name_string("_HID", config->hid);
29  	else
30  		acpigen_write_name_string("_HID", "RTL1015");
31  	acpigen_write_name_integer("_UID", 0);
32  	acpigen_write_name_string("_DDN", dev->chip_ops->name);
33  	acpigen_write_STA(acpi_device_status(dev));
34  
35  	/* Resources */
36  	acpigen_write_name("_CRS");
37  	acpigen_write_resourcetemplate_header();
38  	acpi_device_write_gpio(&config->sdb);
39  	acpigen_write_resourcetemplate_footer();
40  
41  	/* _DSD for devicetree properties */
42  	/* This points to the first pin in the first gpio entry in _CRS */
43  	path = acpi_device_path(dev);
44  	dp = acpi_dp_new_table("_DSD");
45  	acpi_dp_add_gpio(dp, "sdb-gpios", path, 0, 0, config->sdb.active_low);
46  	acpi_dp_write(dp);
47  
48  	acpigen_pop_len(); /* Device */
49  	acpigen_pop_len(); /* Scope */
50  
51  	printk(BIOS_INFO, "%s: %s\n", path, dev->chip_ops->name);
52  }
53  
54  static const char *alc1015_acpi_name(const struct device *dev)
55  {
56  	return "ALCP";
57  }
58  
59  static struct device_operations alc1015_ops = {
60  	.read_resources		= noop_read_resources,
61  	.set_resources		= noop_set_resources,
62  	.acpi_name		= alc1015_acpi_name,
63  	.acpi_fill_ssdt		= alc1015_fill_ssdt,
64  };
65  
66  static void alc1015_enable(struct device *dev)
67  {
68  	dev->ops = &alc1015_ops;
69  }
70  
71  struct chip_operations drivers_generic_alc1015_ops = {
72  	.name = "ASoC RT1015P Amplifier driver",
73  	.enable_dev = alc1015_enable
74  };