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ASoC: Intel: Create a helper to search for matching machine 

Create a helper function to search for a matching machine
based on HID. No functional change

Signed-off-by: Naveen M <naveen.m@intel.com>
Signed-off-by: Harsha Priya <harshapriya.n@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Naveen M 2017-05-15 13:42:13 +05:30 committed by Mark Brown
parent 9bf70cd4cd
commit 915ae2b9f0
2 changed files with 18 additions and 4 deletions
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3
sound/soc/intel/common/sst-acpi.h
View File

@ -43,6 +43,9 @@ static inline bool sst_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
/* acpi match */
struct sst_acpi_mach *sst_acpi_find_machine(struct sst_acpi_mach *machines);
/* acpi check hid */
bool sst_acpi_check_hid(const u8 hid[ACPI_ID_LEN]);
/* Descriptor for SST ASoC machine driver */
struct sst_acpi_mach {
/* ACPI ID for the matching machine driver. Audio codec for instance */

19
sound/soc/intel/common/sst-match-acpi.c
View File

@ -63,15 +63,26 @@ static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level,
return AE_OK;
}
bool sst_acpi_check_hid(const u8 hid[ACPI_ID_LEN])
{
acpi_status status;
bool found = false;
status = acpi_get_devices(hid, sst_acpi_mach_match, &found, NULL);
if (ACPI_FAILURE(status))
return false;
return found;
}
EXPORT_SYMBOL_GPL(sst_acpi_check_hid);
struct sst_acpi_mach *sst_acpi_find_machine(struct sst_acpi_mach *machines)
{
struct sst_acpi_mach *mach;
bool found = false;
for (mach = machines; mach->id[0]; mach++)
if (ACPI_SUCCESS(acpi_get_devices(mach->id,
sst_acpi_mach_match,
&found, NULL)) && found)
if (sst_acpi_check_hid(mach->id) == true)
return mach;
return NULL;
}