src/drivers/generic/adau7002/adau7002.c

   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 <device/path.h>
   8 #include "chip.h"
   9
  10 #if CONFIG(HAVE_ACPI_TABLES)
  11
  12 #define ADAU7002_ACPI_NAME      "ADAU"
  13 #define ADAU7002_ACPI_HID       "ADAU7002"
  14
  15 static void adau7002_fill_ssdt(const struct device *dev)
  16 {
  17         struct drivers_generic_adau7002_config *config;
  18         struct acpi_dp *dp;
  19
  20         if (!dev)
  21                 return;
  22
  23         const char *scope = acpi_device_scope(dev);
  24         const char *name = acpi_device_name(dev);
  25         if (!scope || !name)
  26                 return;
  27
  28         /* Device */
  29         acpigen_write_scope(scope);
  30         acpigen_write_device(name);
  31         acpigen_write_name_string("_HID", ADAU7002_ACPI_HID);
  32         acpigen_write_name_integer("_UID", 0);
  33         acpigen_write_name_string("_DDN", dev->chip_ops->name);
  34         acpigen_write_STA(acpi_device_status(dev));
  35
  36         /* _DSD for devicetree properties */
  37         config = dev->chip_info;
  38         dp = acpi_dp_new_table("_DSD");
  39         acpi_dp_add_integer(dp, "wakeup-delay-ms", config->wakeup_delay);
  40         acpi_dp_write(dp);
  41
  42         acpigen_pop_len(); /* Device */
  43         acpigen_pop_len(); /* Scope */
  44
  45         printk(BIOS_INFO, "%s: %s\n", acpi_device_path(dev),
  46                dev->chip_ops->name);
  47 }
  48
  49 static const char *adau7002_acpi_name(const struct device *dev)
  50 {
  51         return ADAU7002_ACPI_NAME;
  52 }
  53 #endif
  54
  55 static struct device_operations adau7002_ops = {
  56         .read_resources         = noop_read_resources,
  57         .set_resources          = noop_set_resources,
  58 #if CONFIG(HAVE_ACPI_TABLES)
  59         .acpi_name              = adau7002_acpi_name,
  60         .acpi_fill_ssdt         = adau7002_fill_ssdt,
  61 #endif
  62 };
  63
  64 static void adau7002_enable(struct device *dev)
  65 {
  66         dev->ops = &adau7002_ops;
  67 }
  68
  69 struct chip_operations drivers_generic_adau7002_ops = {
  70         CHIP_NAME("Analog Digital DMIC")
  71         .enable_dev = adau7002_enable
  72 };