Unverified Commit c9605999 authored by Cezary Rojewski's avatar Cezary Rojewski Committed by Mark Brown
Browse files

ASoC: Intel: avs: Path state management 



Add functions to ease with state changing of all objects found in the
path. Each represents either a BIND/UNBIND or SET_PIPELINE_STATE IPC.

DSP pipelines follow simple state machine scheme:
CREATE -> RESET -> PAUSE -> RUNNING -> PAUSE -> RESET -> DELETE

There is no STOP, PAUSE serves that purpose instead.

Signed-off-by: default avatarAmadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: default avatarCezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220331135246.993089-12-cezary.rojewski@intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0ef88207

sound/soc/intel/avs/path.c

+130 −0
Original line number Diff line number Diff line
@@ -282,3 +282,133 @@ struct avs_path *avs_path_create(struct avs_dev *adev, u32 dma_id, 


	return path;

}



int avs_path_bind(struct avs_path *path)

{

	struct avs_path_pipeline *ppl;

	struct avs_dev *adev = path->owner;

	int ret;



	list_for_each_entry(ppl, &path->ppl_list, node) {

		struct avs_path_binding *binding;



		list_for_each_entry(binding, &ppl->binding_list, node) {

			struct avs_path_module *source, *sink;



			source = binding->source;

			sink = binding->sink;



			ret = avs_ipc_bind(adev, source->module_id,

					   source->instance_id, sink->module_id,

					   sink->instance_id, binding->sink_pin,

					   binding->source_pin);

			if (ret) {

				dev_err(adev->dev, "bind path failed: %d\n", ret);

				return AVS_IPC_RET(ret);

			}

		}

	}



	return 0;

}



int avs_path_unbind(struct avs_path *path)

{

	struct avs_path_pipeline *ppl;

	struct avs_dev *adev = path->owner;

	int ret;



	list_for_each_entry(ppl, &path->ppl_list, node) {

		struct avs_path_binding *binding;



		list_for_each_entry(binding, &ppl->binding_list, node) {

			struct avs_path_module *source, *sink;



			source = binding->source;

			sink = binding->sink;



			ret = avs_ipc_unbind(adev, source->module_id,

					     source->instance_id, sink->module_id,

					     sink->instance_id, binding->sink_pin,

					     binding->source_pin);

			if (ret) {

				dev_err(adev->dev, "unbind path failed: %d\n", ret);

				return AVS_IPC_RET(ret);

			}

		}

	}



	return 0;

}



int avs_path_reset(struct avs_path *path)

{

	struct avs_path_pipeline *ppl;

	struct avs_dev *adev = path->owner;

	int ret;



	if (path->state == AVS_PPL_STATE_RESET)

		return 0;



	list_for_each_entry(ppl, &path->ppl_list, node) {

		ret = avs_ipc_set_pipeline_state(adev, ppl->instance_id,

						 AVS_PPL_STATE_RESET);

		if (ret) {

			dev_err(adev->dev, "reset path failed: %d\n", ret);

			path->state = AVS_PPL_STATE_INVALID;

			return AVS_IPC_RET(ret);

		}

	}



	path->state = AVS_PPL_STATE_RESET;

	return 0;

}



int avs_path_pause(struct avs_path *path)

{

	struct avs_path_pipeline *ppl;

	struct avs_dev *adev = path->owner;

	int ret;



	if (path->state == AVS_PPL_STATE_PAUSED)

		return 0;



	list_for_each_entry_reverse(ppl, &path->ppl_list, node) {

		ret = avs_ipc_set_pipeline_state(adev, ppl->instance_id,

						 AVS_PPL_STATE_PAUSED);

		if (ret) {

			dev_err(adev->dev, "pause path failed: %d\n", ret);

			path->state = AVS_PPL_STATE_INVALID;

			return AVS_IPC_RET(ret);

		}

	}



	path->state = AVS_PPL_STATE_PAUSED;

	return 0;

}



int avs_path_run(struct avs_path *path, int trigger)

{

	struct avs_path_pipeline *ppl;

	struct avs_dev *adev = path->owner;

	int ret;



	if (path->state == AVS_PPL_STATE_RUNNING && trigger == AVS_TPLG_TRIGGER_AUTO)

		return 0;



	list_for_each_entry(ppl, &path->ppl_list, node) {

		if (ppl->template->cfg->trigger != trigger)

			continue;



		ret = avs_ipc_set_pipeline_state(adev, ppl->instance_id,

						 AVS_PPL_STATE_RUNNING);

		if (ret) {

			dev_err(adev->dev, "run path failed: %d\n", ret);

			path->state = AVS_PPL_STATE_INVALID;

			return AVS_IPC_RET(ret);

		}

	}



	path->state = AVS_PPL_STATE_RUNNING;

	return 0;

}

sound/soc/intel/avs/path.h

+5 −0
Original line number Diff line number Diff line
@@ -62,5 +62,10 @@ struct avs_path *avs_path_create(struct avs_dev *adev, u32 dma_id, 
				 struct avs_tplg_path_template *template,

				 struct snd_pcm_hw_params *fe_params,

				 struct snd_pcm_hw_params *be_params);

int avs_path_bind(struct avs_path *path);

int avs_path_unbind(struct avs_path *path);

int avs_path_reset(struct avs_path *path);

int avs_path_pause(struct avs_path *path);

int avs_path_run(struct avs_path *path, int trigger);



#endif