[PATCH 06/17] ASoC: Intel: avs: Add pipeline management requests

[Cezary Rojewski]

A 'Pipeline' represents both a container of module instances, and a
scheduling entity. Multiple pipelines can be bound together to create an
audio graph. The Pipeline state machine is entirely controlled by IPCs
(creation, deletion and state changes).

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>
---
 sound/soc/intel/avs/messages.c | 76 ++++++++++++++++++++++++++++++++++
 sound/soc/intel/avs/messages.h | 56 +++++++++++++++++++++++++
 2 files changed, 132 insertions(+)

diff --git a/sound/soc/intel/avs/messages.c b/sound/soc/intel/avs/messages.c
index 8dac946dd8dd..ab13fc7809fe 100644
--- a/sound/soc/intel/avs/messages.c
+++ b/sound/soc/intel/avs/messages.c
@@ -63,3 +63,79 @@ int avs_ipc_load_library(struct avs_dev *adev, u32 dma_id, u32 lib_id)
 
 	return ret;
 }
+
+int avs_ipc_create_pipeline(struct avs_dev *adev, u16 req_size, u8 priority,
+			    u8 instance_id, bool lp, u16 attributes)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(CREATE_PIPELINE);
+	struct avs_ipc_msg request = {0};
+	int ret;
+
+	msg.create_ppl.ppl_mem_size = req_size;
+	msg.create_ppl.ppl_priority = priority;
+	msg.create_ppl.instance_id = instance_id;
+	msg.ext.create_ppl.lp = lp;
+	msg.ext.create_ppl.attributes = attributes;
+	request.header = msg.val;
+
+	ret = avs_dsp_send_msg(adev, &request, NULL);
+	if (ret)
+		avs_ipc_err(adev, &request, "create pipeline", ret);
+
+	return ret;
+}
+
+int avs_ipc_delete_pipeline(struct avs_dev *adev, u8 instance_id)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(DELETE_PIPELINE);
+	struct avs_ipc_msg request = {0};
+	int ret;
+
+	msg.ppl.instance_id = instance_id;
+	request.header = msg.val;
+
+	ret = avs_dsp_send_msg(adev, &request, NULL);
+	if (ret)
+		avs_ipc_err(adev, &request, "delete pipeline", ret);
+
+	return ret;
+}
+
+int avs_ipc_set_pipeline_state(struct avs_dev *adev, u8 instance_id,
+			       enum avs_pipeline_state state)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(SET_PIPELINE_STATE);
+	struct avs_ipc_msg request = {0};
+	int ret;
+
+	msg.set_ppl_state.ppl_id = instance_id;
+	msg.set_ppl_state.state = state;
+	request.header = msg.val;
+
+	ret = avs_dsp_send_msg(adev, &request, NULL);
+	if (ret)
+		avs_ipc_err(adev, &request, "set pipeline state", ret);
+
+	return ret;
+}
+
+int avs_ipc_get_pipeline_state(struct avs_dev *adev, u8 instance_id,
+			       enum avs_pipeline_state *state)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(GET_PIPELINE_STATE);
+	struct avs_ipc_msg request = {0};
+	struct avs_ipc_msg reply = {0};
+	int ret;
+
+	msg.get_ppl_state.ppl_id = instance_id;
+	request.header = msg.val;
+
+	ret = avs_dsp_send_msg(adev, &request, &reply);
+	if (ret) {
+		avs_ipc_err(adev, &request, "get pipeline state", ret);
+		return ret;
+	}
+
+	*state = reply.rsp.ext.get_ppl_state.state;
+	return ret;
+}
diff --git a/sound/soc/intel/avs/messages.h b/sound/soc/intel/avs/messages.h
index b9ec1c64179b..67f7e1826e45 100644
--- a/sound/soc/intel/avs/messages.h
+++ b/sound/soc/intel/avs/messages.h
@@ -26,6 +26,10 @@ enum avs_msg_direction {
 enum avs_global_msg_type {
 	AVS_GLB_LOAD_MULTIPLE_MODULES = 15,
 	AVS_GLB_UNLOAD_MULTIPLE_MODULES = 16,
+	AVS_GLB_CREATE_PIPELINE = 17,
+	AVS_GLB_DELETE_PIPELINE = 18,
+	AVS_GLB_SET_PIPELINE_STATE = 19,
+	AVS_GLB_GET_PIPELINE_STATE = 20,
 	AVS_GLB_LOAD_LIBRARY = 24,
 	AVS_GLB_NOTIFICATION = 27,
 };
@@ -45,6 +49,23 @@ union avs_global_msg {
 			struct {
 				u32 mod_cnt:8;
 			} load_multi_mods;
+			/* pipeline management */
+			struct {
+				u32 ppl_mem_size:11;
+				u32 ppl_priority:5;
+				u32 instance_id:8;
+			} create_ppl;
+			struct {
+				u32 rsvd:16;
+				u32 instance_id:8;
+			} ppl; /* generic ppl request */
+			struct {
+				u32 state:16;
+				u32 ppl_id:8;
+			} set_ppl_state;
+			struct {
+				u32 ppl_id:8;
+			} get_ppl_state;
 			/* library loading */
 			struct {
 				u32 dma_id:5;
@@ -54,6 +75,16 @@ union avs_global_msg {
 		};
 		union {
 			u32 val;
+			/* pipeline management */
+			struct {
+				u32 lp:1;
+				u32 rsvd:3;
+				u32 attributes:16;
+			} create_ppl;
+			struct {
+				u32 multi_ppl:1;
+				u32 sync_stop_start:1;
+			} set_ppl_state;
 		} ext;
 	};
 } __packed;
@@ -101,6 +132,10 @@ union avs_reply_msg {
 			struct {
 				u32 err_mod_id:16;
 			} load_multi_mods;
+			/* pipeline management */
+			struct {
+				u32 state:5;
+			} get_ppl_state;
 		} ext;
 	};
 } __packed;
@@ -189,4 +224,25 @@ int avs_ipc_load_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids);
 int avs_ipc_unload_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids);
 int avs_ipc_load_library(struct avs_dev *adev, u32 dma_id, u32 lib_id);
 
+/* Pipeline management messages */
+enum avs_pipeline_state {
+	AVS_PPL_STATE_INVALID,
+	AVS_PPL_STATE_UNINITIALIZED,
+	AVS_PPL_STATE_RESET,
+	AVS_PPL_STATE_PAUSED,
+	AVS_PPL_STATE_RUNNING,
+	AVS_PPL_STATE_EOS,
+	AVS_PPL_STATE_ERROR_STOP,
+	AVS_PPL_STATE_SAVED,
+	AVS_PPL_STATE_RESTORED,
+};
+
+int avs_ipc_create_pipeline(struct avs_dev *adev, u16 req_size, u8 priority,
+			    u8 instance_id, bool lp, u16 attributes);
+int avs_ipc_delete_pipeline(struct avs_dev *adev, u8 instance_id);
+int avs_ipc_set_pipeline_state(struct avs_dev *adev, u8 instance_id,
+			       enum avs_pipeline_state state);
+int avs_ipc_get_pipeline_state(struct avs_dev *adev, u8 instance_id,
+			       enum avs_pipeline_state *state);
+
 #endif /* __SOUND_SOC_INTEL_AVS_MSGS_H */
-- 
2.25.1