From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
The allowed values for SoundWire device numbers are between 1 and 11 (inclusive). HDaudio/iDISP codecs typically use SDI values 0..3 (inclusive). To allow for a unique peripheral SDI/dev_number across HDaudio and SoundWire buses, we set the minimum base to 4. This still allows for 8 SoundWire peripherals in the system, currently more than needed in actual products.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com --- drivers/soundwire/intel.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 95ce292994cc..85d4268eea65 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -22,6 +22,9 @@ #include "bus.h" #include "intel.h"
+/* IDA min selected to avoid conflicts with HDaudio/iDISP SDI values */ +#define INTEL_DEV_NUM_IDA_MIN 4 + #define INTEL_MASTER_SUSPEND_DELAY_MS 3000 #define INTEL_MASTER_RESET_ITERATIONS 10
@@ -1297,6 +1300,7 @@ static int intel_link_probe(struct auxiliary_device *auxdev, cdns->msg_count = 0;
bus->link_id = auxdev->id; + bus->dev_num_ida_min = INTEL_DEV_NUM_IDA_MIN;
sdw_cdns_probe(cdns);