diff options
| -rw-r--r-- | sound/soc/intel/common/sst-acpi.h | 3 | ||||
| -rw-r--r-- | sound/soc/intel/common/sst-match-acpi.c | 33 |
2 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/intel/common/sst-acpi.h b/sound/soc/intel/common/sst-acpi.h index 3ee3b7ab5d03..4dcfb7e5ed70 100644 --- a/sound/soc/intel/common/sst-acpi.h +++ b/sound/soc/intel/common/sst-acpi.h @@ -14,6 +14,9 @@ #include <linux/acpi.h> +/* translation fron HID to I2C name, needed for DAI codec_name */ +const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]); + /* acpi match */ struct sst_acpi_mach *sst_acpi_find_machine(struct sst_acpi_mach *machines); diff --git a/sound/soc/intel/common/sst-match-acpi.c b/sound/soc/intel/common/sst-match-acpi.c index cf2c27cd8651..2c0e7fca97db 100644 --- a/sound/soc/intel/common/sst-match-acpi.c +++ b/sound/soc/intel/common/sst-match-acpi.c @@ -16,6 +16,39 @@ #include "sst-acpi.h" +static acpi_status sst_acpi_find_name(acpi_handle handle, u32 level, + void *context, void **ret) +{ + struct acpi_device *adev; + const char *name = NULL; + + if (acpi_bus_get_device(handle, &adev)) + return AE_OK; + + if (adev->status.present && adev->status.functional) { + name = acpi_dev_name(adev); + *(const char **)ret = name; + return AE_CTRL_TERMINATE; + } + + return AE_OK; +} + +const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]) +{ + const char *name = NULL; + acpi_status status; + + status = acpi_get_devices(hid, sst_acpi_find_name, NULL, + (void **)&name); + + if (ACPI_FAILURE(status) || name[0] == '\0') + return NULL; + + return name; +} +EXPORT_SYMBOL_GPL(sst_acpi_find_name_from_hid); + static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level, void *context, void **ret) { |