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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: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220331135246.993089-12-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2022-03-31 15:52:43 +02:00 committed by Mark Brown
parent 0ef882074e
commit c96059993f
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GPG Key ID: 24D68B725D5487D0
2 changed files with 135 additions and 0 deletions
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130
sound/soc/intel/avs/path.c
View File

@ -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;
}

5
sound/soc/intel/avs/path.h
View File

@ -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