From: Jeeja KP jeeja.kp@intel.com
Module at the end of DSP pipeline that needs to be connected to a module in another pipeline are represented as a PGA(leaf node) and in PGA event handler these modules are bound/unbounded. Modules other than PGA leaf can be connected directly or via switch to a module in another pipeline. Example: reference path.
To support the deferred DSP module bind, following changes are done: o When the path is enabled, the destination module that needs to be bound may not be initialized. If the module is not initialized, add these modules in a deferred bind list. o When the destination module is initialized, check for these modules in deferred bind list. If found, bind them. o When the destination module is deleted, Unbind the modules. o When the source module is deleted, remove the entry from the deferred bind list.
Signed-off-by: Jeeja KP jeeja.kp@intel.com --- sound/soc/intel/skylake/skl-pcm.c | 12 ++++ sound/soc/intel/skylake/skl-topology.c | 109 ++++++++++++++++++++++++++++++++- sound/soc/intel/skylake/skl-topology.h | 6 ++ sound/soc/intel/skylake/skl.h | 1 + 4 files changed, 127 insertions(+), 1 deletion(-)
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c index 149221c..a361de6 100644 --- a/sound/soc/intel/skylake/skl-pcm.c +++ b/sound/soc/intel/skylake/skl-pcm.c @@ -1299,6 +1299,7 @@ int skl_platform_register(struct device *dev) struct skl *skl = ebus_to_skl(ebus);
INIT_LIST_HEAD(&skl->ppl_list); + INIT_LIST_HEAD(&skl->bind_list);
ret = snd_soc_register_platform(dev, &skl_platform_drv); if (ret) { @@ -1319,6 +1320,17 @@ int skl_platform_register(struct device *dev)
int skl_platform_unregister(struct device *dev) { + struct hdac_ext_bus *ebus = dev_get_drvdata(dev); + struct skl *skl = ebus_to_skl(ebus); + struct skl_module_deferred_bind *modules; + + if (!list_empty(&skl->bind_list)) { + list_for_each_entry(modules, &skl->bind_list, node) { + list_del(&modules->node); + kfree(modules); + } + } + snd_soc_unregister_component(dev); snd_soc_unregister_platform(dev); return 0; diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index c541212..74b3acf 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -638,8 +638,9 @@ static int skl_tplg_mixer_dapm_pre_pmu_event(struct snd_soc_dapm_widget *w, struct skl_module_cfg *mconfig = w->priv; struct skl_pipe_module *w_module; struct skl_pipe *s_pipe = mconfig->pipe; - struct skl_module_cfg *src_module = NULL, *dst_module; + struct skl_module_cfg *src_module = NULL, *dst_module, *module; struct skl_sst *ctx = skl->skl_sst; + struct skl_module_deferred_bind *modules;
/* check resource available */ if (!skl_is_pipe_mcps_avail(skl, mconfig)) @@ -680,6 +681,22 @@ static int skl_tplg_mixer_dapm_pre_pmu_event(struct snd_soc_dapm_widget *w, src_module = dst_module; }
+ /* + * When the destination module is initialized, check for these modules + * in deferred bind list. If found, bind them. + */ + list_for_each_entry(w_module, &s_pipe->w_list, node) { + if (list_empty(&skl->bind_list)) + break; + + list_for_each_entry(modules, &skl->bind_list, node) { + module = w_module->w->priv; + if (modules->dst == module) + skl_bind_modules(ctx, modules->src, + modules->dst); + } + } + return 0; }
@@ -776,6 +793,44 @@ static int skl_tplg_set_module_bind_params(struct snd_soc_dapm_widget *w, return 0; }
+ +static int skl_tplg_module_add_deferred_bind(struct skl *skl, + struct skl_module_cfg *src, struct skl_module_cfg *dst) +{ + struct skl_module_deferred_bind *m_list, *modules; + int i; + + /* only supported for module with static pin connection */ + for (i = 0; i < dst->max_in_queue; i++) { + struct skl_module_pin *pin = &dst->m_in_pin[i]; + + if (pin->is_dynamic) + continue; + + if ((pin->id.module_id == src->id.module_id) && + (pin->id.instance_id == src->id.instance_id)) { + + if (!list_empty(&skl->bind_list)) { + list_for_each_entry(modules, &skl->bind_list, node) { + if (modules->src == src && modules->dst == dst) + return 0; + } + } + + m_list = kzalloc(sizeof(*m_list), GFP_KERNEL); + if (!m_list) + return -ENOMEM; + + m_list->src = src; + m_list->dst = dst; + + list_add(&m_list->node, &skl->bind_list); + } + } + + return 0; +} + static int skl_tplg_bind_sinks(struct snd_soc_dapm_widget *w, struct skl *skl, struct snd_soc_dapm_widget *src_w, @@ -810,6 +865,28 @@ static int skl_tplg_bind_sinks(struct snd_soc_dapm_widget *w, sink = p->sink; sink_mconfig = sink->priv;
+ /* + * Modules other than PGA leaf can be connected + * directly or via switch to a module in another + * pipeline. EX: reference path + * when the path is enabled, the dst module that needs + * to be bound may not be initialized. if the module is + * not initialized, add these modules in the deferred + * bind list and when the dst module is initialised, + * bind this module to the dst_module in deferred list. + */ + if (((src_mconfig->m_state == SKL_MODULE_INIT_DONE) + && (sink_mconfig->m_state == SKL_MODULE_UNINIT))) { + + ret = skl_tplg_module_add_deferred_bind(skl, + src_mconfig, sink_mconfig); + + if (ret < 0) + return ret; + + } + + if (src_mconfig->m_state == SKL_MODULE_UNINIT || sink_mconfig->m_state == SKL_MODULE_UNINIT) continue; @@ -1014,6 +1091,7 @@ static int skl_tplg_mixer_dapm_post_pmd_event(struct snd_soc_dapm_widget *w, struct skl_module_cfg *src_module = NULL, *dst_module; struct skl_sst *ctx = skl->skl_sst; struct skl_pipe *s_pipe = mconfig->pipe; + struct skl_module_deferred_bind *modules;
if (s_pipe->state == SKL_PIPE_INVALID) return -EINVAL; @@ -1022,6 +1100,35 @@ static int skl_tplg_mixer_dapm_post_pmd_event(struct snd_soc_dapm_widget *w, skl_tplg_free_pipe_mem(skl, mconfig);
list_for_each_entry(w_module, &s_pipe->w_list, node) { + if (list_empty(&skl->bind_list)) + break; + + src_module = w_module->w->priv; + + list_for_each_entry(modules, &skl->bind_list, node) { + /* + * When the destination module is deleted, Unbind the + * modules from deferred bind list. + */ + if (modules->dst == src_module) { + skl_unbind_modules(ctx, modules->src, + modules->dst); + } + + /* + * When the source module is deleted, remove this entry + * from the deferred bind list. + */ + if (modules->src == src_module) { + list_del(&modules->node); + modules->src = NULL; + modules->dst = NULL; + kfree(modules); + } + } + } + + list_for_each_entry(w_module, &s_pipe->w_list, node) { dst_module = w_module->w->priv;
if (mconfig->m_state >= SKL_MODULE_INIT_DONE) diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h index 8536d03..cc64d6b 100644 --- a/sound/soc/intel/skylake/skl-topology.h +++ b/sound/soc/intel/skylake/skl-topology.h @@ -336,6 +336,12 @@ struct skl_pipeline { struct list_head node; };
+struct skl_module_deferred_bind { + struct skl_module_cfg *src; + struct skl_module_cfg *dst; + struct list_head node; +}; + static inline struct skl *get_skl_ctx(struct device *dev) { struct hdac_ext_bus *ebus = dev_get_drvdata(dev); diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index bbef77d2b..5b3fa4b 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -77,6 +77,7 @@ struct skl {
struct skl_dsp_resource resource; struct list_head ppl_list; + struct list_head bind_list;
const char *fw_name; char tplg_name[64];