intel_sst: MSIC codec power optimisation

This patch adds power optimization for the msic codec and ensure
codec is completely powered off when codec is idle.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/intel_sst/intel_sst.h

@@ -103,8 +103,8 @@ struct snd_pmic_ops {
 
 	int (*power_up_pmic_pb) (unsigned int port);
 	int (*power_up_pmic_cp) (unsigned int port);
-	int (*power_down_pmic_pb) (void);
-	int (*power_down_pmic_cp) (void);
+	int (*power_down_pmic_pb) (unsigned int device);
+	int (*power_down_pmic_cp) (unsigned int device);
 	int (*power_down_pmic) (void);
 };
 

drivers/staging/intel_sst/intel_sst_drv_interface.c

@@ -105,21 +105,23 @@ void free_stream_context(unsigned int str_id)
 	if (!sst_validate_strid(str_id)) {
 		/* str_id is valid, so stream is alloacted */
 		stream = &sst_drv_ctx->streams[str_id];
+		if (sst_free_stream(str_id))
+			sst_clean_stream(&sst_drv_ctx->streams[str_id]);
 		if (stream->ops == STREAM_OPS_PLAYBACK ||
 				stream->ops == STREAM_OPS_PLAYBACK_DRM) {
 			sst_drv_ctx->pb_streams--;
 			if (sst_drv_ctx->pb_streams == 0)
-				sst_drv_ctx->scard_ops->power_down_pmic_pb();
+				sst_drv_ctx->scard_ops->power_down_pmic_pb(
+						stream->device);
 		} else if (stream->ops == STREAM_OPS_CAPTURE) {
 			sst_drv_ctx->cp_streams--;
 			if (sst_drv_ctx->cp_streams == 0)
-				sst_drv_ctx->scard_ops->power_down_pmic_cp();
+				sst_drv_ctx->scard_ops->power_down_pmic_cp(
+						stream->device);
 		}
 		if (sst_drv_ctx->pb_streams == 0
 				&& sst_drv_ctx->cp_streams == 0)
 			sst_drv_ctx->scard_ops->power_down_pmic();
-		if (sst_free_stream(str_id))
-			sst_clean_stream(&sst_drv_ctx->streams[str_id]);
 	}
 }