soundwire: qcom: set controller id to hw master id

Qualcomm Soundwire Controllers IP version after 1.3 have a dedicated
master id register which will provide a unique id value for each
controller instance. Use this value instead of artificially generated
value from idr. Versions 1.3 and below only have one instance of
soundwire controller which does no have this register, so let them use
value from idr.

Signed-off-by: Srinivas Kandagatla <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Tested-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Srinivas-Kandagatla

drivers/soundwire/qcom.c

@@ -1620,9 +1620,13 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 		}
 	}
 
-	/* FIXME: is there a DT-defined value to use ? */
 	ctrl->bus.controller_id = -1;
 
+	if (ctrl->version > SWRM_VERSION_1_3_0) {
+		ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val);
+		ctrl->bus.controller_id = val;
+	}
+
 	ret = sdw_bus_master_add(&ctrl->bus, dev, dev->fwnode);
 	if (ret) {
 		dev_err(dev, "Failed to register Soundwire controller (%d)\n",