From: Mengdong Lin mengdong.lin@linux.intel.com

Currently the number of DAI links is statically defined by the machine driver at build time using an array. This makes it difficult to shrink/ grow the number of DAI links at runtime in order to reflect any changes in topology.

We can change the DAI link array in the core to a list so that PCMs and FE DAI links can be added and deleted at runtime to reflect changes in use case and DSP topology. The machine driver can still register DAI links as an array.

As the 1st step, this patch change the PCM runtime array to a list. A new PCM runtime is added to the list when a DAI link is bound successfully.

Later patches will further implement the DAI link list.

More: - define snd_soc_new/free_pcm_runtime() to create/free a runtime. - define soc_add_pcm_runtime() to add a runtime to the rtd list. - define soc_remove_pcm_runtimes() to clean up the runtime list.

- traverse the rtd list to probe the link components and dais.

- Add a field "num" to PCM runtime struct, used to specify the device number when creating the pcm device, and for a soc card to access its dai_props array.

- The following 3rd party machine/platform drivers iterate the rtd list to check the runtimes: sound/soc/intel/atom/sst-mfld-platform-pcm.c sound/soc/intel/boards/cht_bsw_rt5645.c sound/soc/intel/boards/cht_bsw_rt5672.c sound/soc/intel/boards/cht_bsw_max98090_ti.c

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/sound/soc.h b/include/sound/soc.h index a8b4b9c..232b30d 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1106,7 +1106,7 @@ struct snd_soc_card { /* CPU <--> Codec DAI links */ struct snd_soc_dai_link *dai_link; int num_links; - struct snd_soc_pcm_runtime *rtd; + struct list_head rtd_list; int num_rtd;

/* optional codec specific configuration */ @@ -1201,6 +1201,9 @@ struct snd_soc_pcm_runtime { struct dentry *debugfs_dpcm_root; struct dentry *debugfs_dpcm_state; #endif + + unsigned int num; /* 0-based and monotonic increasing */ + struct list_head list; /* rtd list of the soc card */ };

/* mixer control */ diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index 54c3320..1ded881 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -45,7 +45,7 @@ static int asoc_simple_card_startup(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = - &priv->dai_props[rtd - rtd->card->rtd]; + &priv->dai_props[rtd->num]; int ret;

ret = clk_prepare_enable(dai_props->cpu_dai.clk); @@ -64,7 +64,7 @@ static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); struct simple_dai_props *dai_props = - &priv->dai_props[rtd - rtd->card->rtd]; + &priv->dai_props[rtd->num];

clk_disable_unprepare(dai_props->cpu_dai.clk);

@@ -78,8 +78,7 @@ static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *codec_dai = rtd->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card); - struct simple_dai_props *dai_props = - &priv->dai_props[rtd - rtd->card->rtd]; + struct simple_dai_props *dai_props = &priv->dai_props[rtd->num]; unsigned int mclk, mclk_fs = 0; int ret = 0;

@@ -174,10 +173,9 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) struct snd_soc_dai *codec = rtd->codec_dai; struct snd_soc_dai *cpu = rtd->cpu_dai; struct simple_dai_props *dai_props; - int num, ret; + int ret;

- num = rtd - rtd->card->rtd; - dai_props = &priv->dai_props[num]; + dai_props = &priv->dai_props[rtd->num]; ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai); if (ret < 0) return ret; diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c index 0487cfa..8e475e8 100644 --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c @@ -760,15 +760,15 @@ static int sst_platform_remove(struct platform_device *pdev) static int sst_soc_prepare(struct device *dev) { struct sst_data *drv = dev_get_drvdata(dev); - int i; + struct snd_soc_pcm_runtime *rtd;

/* suspend all pcms first */ snd_soc_suspend(drv->soc_card->dev); snd_soc_poweroff(drv->soc_card->dev);

/* set the SSPs to idle */ - for (i = 0; i < drv->soc_card->num_rtd; i++) { - struct snd_soc_dai *dai = drv->soc_card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) { + struct snd_soc_dai *dai = rtd->cpu_dai;

if (dai->active) { send_ssp_cmd(dai, dai->name, 0); @@ -782,11 +782,11 @@ static int sst_soc_prepare(struct device *dev) static void sst_soc_complete(struct device *dev) { struct sst_data *drv = dev_get_drvdata(dev); - int i; + struct snd_soc_pcm_runtime *rtd;

/* restart SSPs */ - for (i = 0; i < drv->soc_card->num_rtd; i++) { - struct snd_soc_dai *dai = drv->soc_card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) { + struct snd_soc_dai *dai = rtd->cpu_dai;

if (dai->active) { sst_handle_vb_timer(dai, true); diff --git a/sound/soc/intel/boards/cht_bsw_max98090_ti.c b/sound/soc/intel/boards/cht_bsw_max98090_ti.c index 49f4869..21ae614 100644 --- a/sound/soc/intel/boards/cht_bsw_max98090_ti.c +++ b/sound/soc/intel/boards/cht_bsw_max98090_ti.c @@ -41,12 +41,9 @@ struct cht_mc_private {

static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) { - int i; + struct snd_soc_pcm_runtime *rtd;

- for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd; - - rtd = card->rtd + i; + list_for_each_entry(rtd, &card->rtd_list, list) { if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, strlen(CHT_CODEC_DAI))) return rtd->codec_dai; diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c index 7be8461..5184e94 100644 --- a/sound/soc/intel/boards/cht_bsw_rt5645.c +++ b/sound/soc/intel/boards/cht_bsw_rt5645.c @@ -47,12 +47,9 @@ struct cht_mc_private {

static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) { - int i; - - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd; + struct snd_soc_pcm_runtime *rtd;

- rtd = card->rtd + i; + list_for_each_entry(rtd, &card->rtd_list, list) { if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, strlen(CHT_CODEC_DAI))) return rtd->codec_dai; diff --git a/sound/soc/intel/boards/cht_bsw_rt5672.c b/sound/soc/intel/boards/cht_bsw_rt5672.c index 23fe040..b0154b8 100644 --- a/sound/soc/intel/boards/cht_bsw_rt5672.c +++ b/sound/soc/intel/boards/cht_bsw_rt5672.c @@ -46,12 +46,9 @@ static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {

static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) { - int i; + struct snd_soc_pcm_runtime *rtd;

- for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd; - - rtd = card->rtd + i; + list_for_each_entry(rtd, &card->rtd_list, list) { if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, strlen(CHT_CODEC_DAI))) return rtd->codec_dai; diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c index deed48e..8c4f54b 100644 --- a/sound/soc/sh/rcar/core.c +++ b/sound/soc/sh/rcar/core.c @@ -1040,7 +1040,7 @@ static int __rsnd_kctrl_new(struct rsnd_mod *mod, .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = name, .info = rsnd_kctrl_info, - .index = rtd - soc_card->rtd, + .index = rtd->num, .get = rsnd_kctrl_get, .put = rsnd_kctrl_put, .private_value = (unsigned long)cfg, diff --git a/sound/soc/sh/rcar/rsrc-card.c b/sound/soc/sh/rcar/rsrc-card.c index d61db9c..94d23d8 100644 --- a/sound/soc/sh/rcar/rsrc-card.c +++ b/sound/soc/sh/rcar/rsrc-card.c @@ -75,7 +75,7 @@ static int rsrc_card_startup(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); struct rsrc_card_dai *dai_props = - rsrc_priv_to_props(priv, rtd - rtd->card->rtd); + rsrc_priv_to_props(priv, rtd->num);

return clk_prepare_enable(dai_props->clk); } @@ -85,7 +85,7 @@ static void rsrc_card_shutdown(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct rsrc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); struct rsrc_card_dai *dai_props = - rsrc_priv_to_props(priv, rtd - rtd->card->rtd); + rsrc_priv_to_props(priv, rtd->num);

clk_disable_unprepare(dai_props->clk); } @@ -101,7 +101,7 @@ static int rsrc_card_dai_init(struct snd_soc_pcm_runtime *rtd) struct snd_soc_dai *dai; struct snd_soc_dai_link *dai_link; struct rsrc_card_dai *dai_props; - int num = rtd - rtd->card->rtd; + int num = rtd->num; int ret;

dai_link = rsrc_priv_to_link(priv, num); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 24b0960..2c95de7 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -537,26 +537,75 @@ static inline void snd_soc_debugfs_exit(void) struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, const char *dai_link, int stream) { - int i; + struct snd_soc_pcm_runtime *rtd;

- for (i = 0; i < card->num_links; i++) { - if (card->rtd[i].dai_link->no_pcm && - !strcmp(card->rtd[i].dai_link->name, dai_link)) - return card->rtd[i].pcm->streams[stream].substream; + list_for_each_entry(rtd, &card->rtd_list, list) { + if (rtd->dai_link->no_pcm && + !strcmp(rtd->dai_link->name, dai_link)) + return rtd->pcm->streams[stream].substream; } dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); return NULL; } EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);

+static struct snd_soc_pcm_runtime *soc_new_pcm_runtime( + struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) +{ + struct snd_soc_pcm_runtime *rtd; + + rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); + if (!rtd) + return NULL; + + rtd->card = card; + rtd->dai_link = dai_link; + rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) * + dai_link->num_codecs, + GFP_KERNEL); + if (!rtd->codec_dais) { + kfree(rtd); + return NULL; + } + + return rtd; +} + +static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd) +{ + if (rtd && rtd->codec_dais) + kfree(rtd->codec_dais); + kfree(rtd); +} + +static void soc_add_pcm_runtime(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd) +{ + list_add_tail(&rtd->list, &card->rtd_list); + rtd->num = card->num_rtd; + card->num_rtd++; +} + +static void soc_remove_pcm_runtimes(struct snd_soc_card *card) +{ + struct snd_soc_pcm_runtime *rtd, *_rtd; + + list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) { + list_del(&rtd->list); + soc_free_pcm_runtime(rtd); + } + + card->num_rtd = 0; +} + struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, const char *dai_link) { - int i; + struct snd_soc_pcm_runtime *rtd;

- for (i = 0; i < card->num_links; i++) { - if (!strcmp(card->rtd[i].dai_link->name, dai_link)) - return &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) { + if (!strcmp(rtd->dai_link->name, dai_link)) + return rtd; } dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); return NULL; @@ -578,7 +627,8 @@ int snd_soc_suspend(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); struct snd_soc_codec *codec; - int i, j; + struct snd_soc_pcm_runtime *rtd; + int i;

/* If the card is not initialized yet there is nothing to do */ if (!card->instantiated) @@ -595,13 +645,13 @@ int snd_soc_suspend(struct device *dev) snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);

/* mute any active DACs */ - for (i = 0; i < card->num_rtd; i++) { + list_for_each_entry(rtd, &card->rtd_list, list) {

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

- for (j = 0; j < card->rtd[i].num_codecs; j++) { - struct snd_soc_dai *dai = card->rtd[i].codec_dais[j]; + for (i = 0; i < rtd->num_codecs; i++) { + struct snd_soc_dai *dai = rtd->codec_dais[i]; struct snd_soc_dai_driver *drv = dai->driver;

if (drv->ops->digital_mute && dai->playback_active) @@ -610,20 +660,20 @@ int snd_soc_suspend(struct device *dev) }

/* suspend all pcms */ - for (i = 0; i < card->num_rtd; i++) { - if (card->rtd[i].dai_link->ignore_suspend) + list_for_each_entry(rtd, &card->rtd_list, list) { + if (rtd->dai_link->ignore_suspend) continue;

- snd_pcm_suspend_all(card->rtd[i].pcm); + snd_pcm_suspend_all(rtd->pcm); }

if (card->suspend_pre) card->suspend_pre(card);

- for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &card->rtd_list, list) { + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control) @@ -631,19 +681,19 @@ int snd_soc_suspend(struct device *dev) }

/* close any waiting streams */ - for (i = 0; i < card->num_rtd; i++) - flush_delayed_work(&card->rtd[i].delayed_work); + list_for_each_entry(rtd, &card->rtd_list, list) + flush_delayed_work(&rtd->delayed_work);

- for (i = 0; i < card->num_rtd; i++) { + list_for_each_entry(rtd, &card->rtd_list, list) {

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

- snd_soc_dapm_stream_event(&card->rtd[i], + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_SUSPEND);

- snd_soc_dapm_stream_event(&card->rtd[i], + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_SUSPEND); } @@ -690,10 +740,10 @@ int snd_soc_suspend(struct device *dev) } }

- for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &card->rtd_list, list) { + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control) @@ -717,8 +767,9 @@ static void soc_resume_deferred(struct work_struct *work) { struct snd_soc_card *card = container_of(work, struct snd_soc_card, deferred_resume_work); + struct snd_soc_pcm_runtime *rtd; struct snd_soc_codec *codec; - int i, j; + int i;

/* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, * so userspace apps are blocked from touching us @@ -733,10 +784,10 @@ static void soc_resume_deferred(struct work_struct *work) card->resume_pre(card);

/* resume control bus DAIs */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &card->rtd_list, list) { + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

if (cpu_dai->driver->resume && cpu_dai->driver->bus_control) @@ -751,28 +802,28 @@ static void soc_resume_deferred(struct work_struct *work) } }

- for (i = 0; i < card->num_rtd; i++) { + list_for_each_entry(rtd, &card->rtd_list, list) {

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

- snd_soc_dapm_stream_event(&card->rtd[i], + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_RESUME);

- snd_soc_dapm_stream_event(&card->rtd[i], + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_RESUME); }

/* unmute any active DACs */ - for (i = 0; i < card->num_rtd; i++) { + list_for_each_entry(rtd, &card->rtd_list, list) {

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

- for (j = 0; j < card->rtd[i].num_codecs; j++) { - struct snd_soc_dai *dai = card->rtd[i].codec_dais[j]; + for (i = 0; i < rtd->num_codecs; i++) { + struct snd_soc_dai *dai = rtd->codec_dais[i]; struct snd_soc_dai_driver *drv = dai->driver;

if (drv->ops->digital_mute && dai->playback_active) @@ -780,10 +831,10 @@ static void soc_resume_deferred(struct work_struct *work) } }

- for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &card->rtd_list, list) { + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

- if (card->rtd[i].dai_link->ignore_suspend) + if (rtd->dai_link->ignore_suspend) continue;

if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control) @@ -808,15 +859,14 @@ int snd_soc_resume(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); bool bus_control = false; - int i; + struct snd_soc_pcm_runtime *rtd;

/* If the card is not initialized yet there is nothing to do */ if (!card->instantiated) return 0;

/* activate pins from sleep state */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) { struct snd_soc_dai **codec_dais = rtd->codec_dais; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int j; @@ -837,8 +887,8 @@ int snd_soc_resume(struct device *dev) * have that problem and may take a substantial amount of time to resume * due to I/O costs and anti-pop so handle them out of line. */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; + list_for_each_entry(rtd, &card->rtd_list, list) { + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; bus_control |= cpu_dai->driver->bus_control; } if (bus_control) { @@ -913,16 +963,20 @@ static struct snd_soc_dai *snd_soc_find_dai( static int soc_bind_dai_link(struct snd_soc_card *card, int num) { struct snd_soc_dai_link *dai_link = &card->dai_link[num]; - struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; + struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai_link_component *codecs = dai_link->codecs; struct snd_soc_dai_link_component cpu_dai_component; - struct snd_soc_dai **codec_dais = rtd->codec_dais; + struct snd_soc_dai **codec_dais; struct snd_soc_platform *platform; const char *platform_name; int i;

dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);

+ rtd = soc_new_pcm_runtime(card, dai_link); + if (!rtd) + return -ENOMEM; + cpu_dai_component.name = dai_link->cpu_name; cpu_dai_component.of_node = dai_link->cpu_of_node; cpu_dai_component.dai_name = dai_link->cpu_dai_name; @@ -930,18 +984,19 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num) if (!rtd->cpu_dai) { dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", dai_link->cpu_dai_name); - return -EPROBE_DEFER; + goto _err_defer; }

rtd->num_codecs = dai_link->num_codecs;

/* Find CODEC from registered CODECs */ + codec_dais = rtd->codec_dais; for (i = 0; i < rtd->num_codecs; i++) { codec_dais[i] = snd_soc_find_dai(&codecs[i]); if (!codec_dais[i]) { dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", codecs[i].dai_name); - return -EPROBE_DEFER; + goto _err_defer; } }

@@ -973,9 +1028,12 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num) return -EPROBE_DEFER; }

- card->num_rtd++; - + soc_add_pcm_runtime(card, rtd); return 0; + +_err_defer: + soc_free_pcm_runtime(rtd); + return -EPROBE_DEFER; }

static void soc_remove_component(struct snd_soc_component *component) @@ -1014,9 +1072,9 @@ static void soc_remove_dai(struct snd_soc_dai *dai, int order) } }

-static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) +static void soc_remove_link_dais(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd, int order) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; int i;

/* unregister the rtd device */ @@ -1032,10 +1090,9 @@ static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) soc_remove_dai(rtd->cpu_dai, order); }

-static void soc_remove_link_components(struct snd_soc_card *card, int num, - int order) +static void soc_remove_link_components(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd, int order) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; @@ -1061,21 +1118,20 @@ static void soc_remove_link_components(struct snd_soc_card *card, int num,

static void soc_remove_dai_links(struct snd_soc_card *card) { - int dai, order; + int order; + struct snd_soc_pcm_runtime *rtd;

for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { - for (dai = 0; dai < card->num_rtd; dai++) - soc_remove_link_dais(card, dai, order); + list_for_each_entry(rtd, &card->rtd_list, list) + soc_remove_link_dais(card, rtd, order); }

for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { - for (dai = 0; dai < card->num_rtd; dai++) - soc_remove_link_components(card, dai, order); + list_for_each_entry(rtd, &card->rtd_list, list) + soc_remove_link_components(card, rtd, order); } - - card->num_rtd = 0; }

static void soc_set_name_prefix(struct snd_soc_card *card, @@ -1220,10 +1276,10 @@ static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd, return 0; }

-static int soc_probe_link_components(struct snd_soc_card *card, int num, +static int soc_probe_link_components(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd, int order) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; int i, ret; @@ -1319,15 +1375,15 @@ static int soc_link_dai_widgets(struct snd_soc_card *card, return 0; }

-static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) +static int soc_probe_link_dais(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd, int order) { - struct snd_soc_dai_link *dai_link = &card->dai_link[num]; - struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; + struct snd_soc_dai_link *dai_link = rtd->dai_link; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int i, ret;

dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", - card->name, num, order); + card->name, rtd->num, order);

/* set default power off timeout */ rtd->pmdown_time = pmdown_time; @@ -1372,7 +1428,7 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)

if (cpu_dai->driver->compress_new) { /*create compress_device"*/ - ret = cpu_dai->driver->compress_new(rtd, num); + ret = cpu_dai->driver->compress_new(rtd, rtd->num); if (ret < 0) { dev_err(card->dev, "ASoC: can't create compress %s\n", dai_link->stream_name); @@ -1382,7 +1438,7 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)

if (!dai_link->params) { /* create the pcm */ - ret = soc_new_pcm(rtd, num); + ret = soc_new_pcm(rtd, rtd->num); if (ret < 0) { dev_err(card->dev, "ASoC: can't create pcm %s :%d\n", dai_link->stream_name, ret); @@ -1552,6 +1608,7 @@ EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt); static int snd_soc_instantiate_card(struct snd_soc_card *card) { struct snd_soc_codec *codec; + struct snd_soc_pcm_runtime *rtd; int ret, i, order;

mutex_lock(&client_mutex); @@ -1624,8 +1681,8 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) /* probe all components used by DAI links on this card */ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { - for (i = 0; i < card->num_links; i++) { - ret = soc_probe_link_components(card, i, order); + list_for_each_entry(rtd, &card->rtd_list, list) { + ret = soc_probe_link_components(card, rtd, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", @@ -1638,8 +1695,8 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) /* probe all DAI links on this card */ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) { - for (i = 0; i < card->num_links; i++) { - ret = soc_probe_link_dais(card, i, order); + list_for_each_entry(rtd, &card->rtd_list, list) { + ret = soc_probe_link_dais(card, rtd, order); if (ret < 0) { dev_err(card->dev, "ASoC: failed to instantiate card %d\n", @@ -1733,6 +1790,7 @@ card_probe_error: snd_card_free(card->snd_card);

base_error: + soc_remove_pcm_runtimes(card); mutex_unlock(&card->mutex); mutex_unlock(&client_mutex);

@@ -1763,13 +1821,12 @@ static int soc_probe(struct platform_device *pdev)

static int soc_cleanup_card_resources(struct snd_soc_card *card) { + struct snd_soc_pcm_runtime *rtd; int i;

/* make sure any delayed work runs */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) flush_delayed_work(&rtd->delayed_work); - }

/* remove auxiliary devices */ for (i = 0; i < card->num_aux_devs; i++) @@ -1777,6 +1834,7 @@ static int soc_cleanup_card_resources(struct snd_soc_card *card)

/* remove and free each DAI */ soc_remove_dai_links(card); + soc_remove_pcm_runtimes(card);

soc_cleanup_card_debugfs(card);

@@ -1803,29 +1861,26 @@ static int soc_remove(struct platform_device *pdev) int snd_soc_poweroff(struct device *dev) { struct snd_soc_card *card = dev_get_drvdata(dev); - int i; + struct snd_soc_pcm_runtime *rtd;

if (!card->instantiated) return 0;

/* Flush out pmdown_time work - we actually do want to run it * now, we're shutting down so no imminent restart. */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) flush_delayed_work(&rtd->delayed_work); - }

snd_soc_dapm_shutdown(card);

/* deactivate pins to sleep state */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - int j; + int i;

pinctrl_pm_select_sleep_state(cpu_dai->dev); - for (j = 0; j < rtd->num_codecs; j++) { - struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; + for (i = 0; i < rtd->num_codecs; i++) { + struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; pinctrl_pm_select_sleep_state(codec_dai->dev); } } @@ -2337,6 +2392,7 @@ static int snd_soc_init_multicodec(struct snd_soc_card *card, int snd_soc_register_card(struct snd_soc_card *card) { int i, j, ret; + struct snd_soc_pcm_runtime *rtd;

if (!card->name || !card->dev) return -EINVAL; @@ -2408,25 +2464,15 @@ int snd_soc_register_card(struct snd_soc_card *card)

snd_soc_initialize_card_lists(card);

- card->rtd = devm_kzalloc(card->dev, + INIT_LIST_HEAD(&card->rtd_list); + card->num_rtd = 0; + + card->rtd_aux = devm_kzalloc(card->dev, sizeof(struct snd_soc_pcm_runtime) * - (card->num_links + card->num_aux_devs), + card->num_aux_devs, GFP_KERNEL); - if (card->rtd == NULL) + if (card->rtd_aux == NULL) return -ENOMEM; - card->num_rtd = 0; - card->rtd_aux = &card->rtd[card->num_links]; - - for (i = 0; i < card->num_links; i++) { - card->rtd[i].card = card; - card->rtd[i].dai_link = &card->dai_link[i]; - card->rtd[i].codec_dais = devm_kzalloc(card->dev, - sizeof(struct snd_soc_dai *) * - (card->rtd[i].dai_link->num_codecs), - GFP_KERNEL); - if (card->rtd[i].codec_dais == NULL) - return -ENOMEM; - }

for (i = 0; i < card->num_aux_devs; i++) card->rtd_aux[i].card = card; @@ -2442,8 +2488,7 @@ int snd_soc_register_card(struct snd_soc_card *card) return ret;

/* deactivate pins to sleep state */ - for (i = 0; i < card->num_rtd; i++) { - struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; + list_for_each_entry(rtd, &card->rtd_list, list) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int j;

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 016eba1..3eba72c 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3893,13 +3893,10 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,

void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) { - struct snd_soc_pcm_runtime *rtd = card->rtd; - int i; + struct snd_soc_pcm_runtime *rtd;

/* for each BE DAI link... */ - for (i = 0; i < card->num_rtd; i++) { - rtd = &card->rtd[i]; - + list_for_each_entry(rtd, &card->rtd_list, list) { /* * dynamic FE links have no fixed DAI mapping. * CODEC<->CODEC links have no direct connection. diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 3173958..bfef69b 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1215,11 +1215,10 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, struct snd_soc_dapm_widget *widget, int stream) { struct snd_soc_pcm_runtime *be; - int i, j; + int i;

if (stream == SNDRV_PCM_STREAM_PLAYBACK) { - for (i = 0; i < card->num_links; i++) { - be = &card->rtd[i]; + list_for_each_entry(be, &card->rtd_list, list) {

if (!be->dai_link->no_pcm) continue; @@ -1227,16 +1226,15 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, if (be->cpu_dai->playback_widget == widget) return be;

- for (j = 0; j < be->num_codecs; j++) { - struct snd_soc_dai *dai = be->codec_dais[j]; + for (i = 0; i < be->num_codecs; i++) { + struct snd_soc_dai *dai = be->codec_dais[i]; if (dai->playback_widget == widget) return be; } } } else {

- for (i = 0; i < card->num_links; i++) { - be = &card->rtd[i]; + list_for_each_entry(be, &card->rtd_list, list) {

if (!be->dai_link->no_pcm) continue; @@ -1244,8 +1242,8 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, if (be->cpu_dai->capture_widget == widget) return be;

- for (j = 0; j < be->num_codecs; j++) { - struct snd_soc_dai *dai = be->codec_dais[j]; + for (i = 0; i < be->num_codecs; i++) { + struct snd_soc_dai *dai = be->codec_dais[i]; if (dai->capture_widget == widget) return be; } @@ -2345,12 +2343,12 @@ static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) */ int soc_dpcm_runtime_update(struct snd_soc_card *card) { - int i, old, new, paths; + struct snd_soc_pcm_runtime *fe; + int old, new, paths;

mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); - for (i = 0; i < card->num_rtd; i++) { + list_for_each_entry(fe, &card->rtd_list, list) { struct snd_soc_dapm_widget_list *list; - struct snd_soc_pcm_runtime *fe = &card->rtd[i];

/* make sure link is FE */ if (!fe->dai_link->dynamic)

From: Mengdong Lin mengdong.lin@linux.intel.com

Just code refactoring, to reuse it if new DAI Links are added later based on topology in component probing phase.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 2ecd094..878a9fe 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -960,9 +960,9 @@ static struct snd_soc_dai *snd_soc_find_dai( return NULL; }

-static int soc_bind_dai_link(struct snd_soc_card *card, int num) +static int soc_bind_dai_link(struct snd_soc_card *card, + struct snd_soc_dai_link *dai_link) { - struct snd_soc_dai_link *dai_link = &card->dai_link[num]; struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai_link_component *codecs = dai_link->codecs; struct snd_soc_dai_link_component cpu_dai_component; @@ -971,7 +971,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num) const char *platform_name; int i;

- dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num); + dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);

rtd = soc_new_pcm_runtime(card, dai_link); if (!rtd) @@ -1710,7 +1710,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)

/* bind DAIs */ for (i = 0; i < card->num_links; i++) { - ret = soc_bind_dai_link(card, i); + ret = soc_bind_dai_link(card, &card->dai_link[i]); if (ret != 0) goto base_error; }

From: Mengdong Lin mengdong.lin@linux.intel.com

Implement a dai link list for the soc card.

Add API snd_soc_add_dai_link() to add an DAI links dynamically, e.g. based on topology.

The predefined DAI links are reserved to keep backward compatibility, and they will also be added to the list.

Open: No API to remove a DAI link from the list, because there is no request from topology atm. When machine driver is removed, the dynamically added links need to be removed and freed. Need a clear working flow.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/sound/soc.h b/include/sound/soc.h index 232b30d..60e5fda 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1037,6 +1037,8 @@ struct snd_soc_dai_link {

/* pmdown_time is ignored at stop */ unsigned int ignore_pmdown_time:1; + + struct list_head list; /* dai link list of the soc card */ };

struct snd_soc_codec_conf { @@ -1104,8 +1106,11 @@ struct snd_soc_card { long pmdown_time;

/* CPU <--> Codec DAI links */ - struct snd_soc_dai_link *dai_link; - int num_links; + struct snd_soc_dai_link *dai_link; /* predefined links only */ + int num_links; /* predefined links only */ + struct list_head dai_link_list; /* all links */ + int num_dai_links; + struct list_head rtd_list; int num_rtd;

@@ -1647,6 +1652,9 @@ int snd_soc_of_get_dai_link_codecs(struct device *dev, struct device_node *of_node, struct snd_soc_dai_link *dai_link);

+void snd_soc_add_dai_link(struct snd_soc_card *card, + struct snd_soc_dai_link *dai_link); + #include <sound/soc-dai.h>

#ifdef CONFIG_DEBUG_FS diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 878a9fe..c855e30 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1228,6 +1228,27 @@ static int soc_init_dai_link(struct snd_soc_card *card, return 0; }

+/** + * snd_soc_add_dai_link - Add a DAI link dynamically + * @card: The ASoC card to which the DAI link is added + * @dai_link: The new DAI link to add + * + * This function adds a DAI link to the ASoC card, and creates a ASoC + * runtime for the link. + * + * Note: For adding DAI links dynamically by machine drivers based on + * the topology info when probing the platform component. And machine + * drivers can still define static DAI links in dai_link array. + */ +void snd_soc_add_dai_link(struct snd_soc_card *card, + struct snd_soc_dai_link *dai_link) +{ + lockdep_assert_held(&client_mutex); + list_add_tail(&dai_link->list, &card->dai_link_list); + card->num_dai_links++; +} +EXPORT_SYMBOL_GPL(snd_soc_add_dai_link); + static void soc_set_name_prefix(struct snd_soc_card *card, struct snd_soc_component *component) { @@ -1722,6 +1743,10 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) goto base_error; }

+ /* add predefined DAI links to the list */ + for (i = 0; i < card->num_links; i++) + snd_soc_add_dai_link(card, card->dai_link+i); + /* initialize the register cache for each available codec */ list_for_each_entry(codec, &codec_list, list) { if (codec->cache_init) @@ -2479,6 +2504,9 @@ int snd_soc_register_card(struct snd_soc_card *card)

snd_soc_initialize_card_lists(card);

+ INIT_LIST_HEAD(&card->dai_link_list); + card->num_dai_links = 0; + INIT_LIST_HEAD(&card->rtd_list); card->num_rtd = 0;

From: Mengdong Lin mengdong.lin@linux.intel.com

This function will return success immediately for a bound DAI link. No need to look for the cpu/codec DAIs again.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 24e0c50..86c3219 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -960,6 +960,19 @@ static struct snd_soc_dai *snd_soc_find_dai( return NULL; }

+static bool soc_is_dai_link_bound(struct snd_soc_card *card, + struct snd_soc_dai_link *dai_link) +{ + struct snd_soc_pcm_runtime *rtd; + + list_for_each_entry(rtd, &card->rtd_list, list) { + if (rtd->dai_link == dai_link) + return true; + } + + return false; +} + static int soc_bind_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { @@ -977,6 +990,12 @@ static int soc_bind_dai_link(struct snd_soc_card *card, if (!rtd) return -ENOMEM;

+ if (soc_is_dai_link_bound(card, dai_link)) { + dev_dbg(card->dev, "ASoC: dai link %s already bound\n", + dai_link->name); + return 0; + } + cpu_dai_component.name = dai_link->cpu_name; cpu_dai_component.of_node = dai_link->cpu_of_node; cpu_dai_component.dai_name = dai_link->cpu_dai_name;

From: Mengdong Lin mengdong.lin@linux.intel.com

Probing components can bring new DAI or DAI links based on the topology info. This patch finds the unbound DAI links and bind them.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 86c3219..cb49a31 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1747,6 +1747,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) { struct snd_soc_codec *codec; struct snd_soc_pcm_runtime *rtd; + struct snd_soc_dai_link *dai_link; int ret, i, order;

mutex_lock(&client_mutex); @@ -1834,6 +1835,21 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) } }

+ /* Find new DAI links added during probing components and bind them. + * Components with topology may bring new DAIs and DAI links. + */ + list_for_each_entry(dai_link, &card->dai_link_list, list) { + if (soc_is_dai_link_bound(card, dai_link)) + continue; + + ret = soc_init_dai_link(card, dai_link); + if (ret) + goto probe_dai_err; + ret = soc_bind_dai_link(card, dai_link); + if (ret) + goto probe_dai_err; + } + /* probe all DAI links on this card */ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) {

From: Mengdong Lin mengdong.lin@linux.intel.com

Machine drivers can set the name of one or more auxiliary components. And the ASoC core will find and probe the auxiliary components.

Machine drivers can use this to specify the components with topology. Then when the components are probed, topology info will be loaded to the core.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/sound/soc.h b/include/sound/soc.h index 9a0e0e8..13e1409 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1070,6 +1070,11 @@ struct snd_soc_aux_dev { int (*init)(struct snd_soc_component *component); };

+struct snd_soc_aux_component { + const char *name; + struct snd_soc_component *comp; +}; + /* SoC card */ struct snd_soc_card { const char *name; @@ -1114,6 +1119,10 @@ struct snd_soc_card { struct list_head dai_link_list; /* all links */ int num_dai_links;

+ /* auxiliary components, e.g. topology */ + struct snd_soc_aux_component *aux_components; + int num_aux_components; + struct list_head rtd_list; int num_rtd;

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index cb49a31..23d067ae 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1767,6 +1767,18 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) goto base_error; }

+ /* find auxiliary components */ + for (i = 0; i < card->num_aux_components; i++) { + card->aux_components[i].comp = + soc_find_component(NULL, card->aux_components[i].name); + if (!card->aux_components[i].comp) { + dev_err(card->dev, "ASoC: Aux component %s not registered\n", + card->aux_components[i].name); + ret = -EPROBE_DEFER; + goto base_error; + } + } + /* add predefined DAI links to the list */ for (i = 0; i < card->num_links; i++) snd_soc_add_dai_link(card, card->dai_link+i); @@ -1821,6 +1833,21 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) goto card_probe_error; }

+ /* probe auxiliary components */ + for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; + order++) { + for (i = 0; i < card->num_aux_components; i++) { + ret = soc_probe_component(card, + card->aux_components[i].comp); + if (ret < 0) { + dev_err(card->dev, + "ASoC: failed to probe aux component %s %d\n", + card->aux_components[i].name, ret); + goto probe_dai_err; + } + } + } + /* probe all components used by DAI links on this card */ for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; order++) {

From: Mengdong Lin mengdong.lin@linux.intel.com

API snd_soc_add_dai() is defined to register a DAI dynamically and create its DAI widget. This API can be used by the topology core to add DAIs.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/sound/soc.h b/include/sound/soc.h index 13e1409..a6e6a1b 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1667,6 +1667,9 @@ int snd_soc_of_get_dai_link_codecs(struct device *dev, void snd_soc_add_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);

+int snd_soc_add_dai(struct snd_soc_component *component, + struct snd_soc_dai_driver *dai_drv); + #include <sound/soc-dai.h>

#ifdef CONFIG_DEBUG_FS diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 23d067ae..f4bf26c 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2786,6 +2786,91 @@ err: return ret; }

+static struct snd_soc_dai *soc_register_dai(struct snd_soc_component *component, + struct snd_soc_dai_driver *dai_drv, + bool legacy_dai_naming) +{ + struct device *dev = component->dev; + struct snd_soc_dai *dai; + int ret; + + dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev)); + + dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); + if (dai == NULL) { + ret = -ENOMEM; + goto err; + } + + /* + * Back in the old days when we still had component-less DAIs, + * instead of having a static name, component-less DAIs would + * inherit the name of the parent device so it is possible to + * register multiple instances of the DAI. We still need to keep + * the same naming style even though those DAIs are not + * component-less anymore. + */ + if (legacy_dai_naming) { + dai->name = fmt_single_name(dev, &dai->id); + } else { + dai->name = fmt_multiple_name(dev, dai_drv); + if (dai_drv->id) + dai->id = dai_drv->id; + else + dai->id = component->num_dai; + } + if (dai->name == NULL) { + kfree(dai); + ret = -ENOMEM; + goto err; + } + + dai->component = component; + dai->dev = dev; + dai->driver = dai_drv; + if (!dai->driver->ops) + dai->driver->ops = &null_dai_ops; + + list_add(&dai->list, &component->dai_list); + component->num_dai++; + + dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); + return dai; + +err: + kfree(dai); + return NULL; +} + +/** + * snd_soc_add_dai - Add a DAI dynamically with the ASoC core + * + * @component: The component the DAIs are registered for + * @dai_drv: DAI driver to use for the DAI + */ +int snd_soc_add_dai(struct snd_soc_component *component, + struct snd_soc_dai_driver *dai_drv) +{ + struct snd_soc_dapm_context *dapm = + snd_soc_component_get_dapm(component); + struct snd_soc_dai *dai; + int ret; + + lockdep_assert_held(&client_mutex); + dai = soc_register_dai(component, dai_drv, false); + if (!dai) + return -ENOMEM; + + ret = snd_soc_dapm_new_dai_widgets(dapm, dai); + if (ret != 0) { + dev_err(component->dev, + "Failed to create DAI widgets %d\n", ret); + } + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_add_dai); + static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm, enum snd_soc_dapm_type type, int subseq) {

From: Mengdong Lin mengdong.lin@linux.intel.com

FE DAI links can be created from topology.

And a machine driver can register add_dai_link ops to the soc card, to get notified when a new DAI link is created and bind machine-specific info to the link.

Signed-off-by: Mengdong Lin mengdong.lin@linux.intel.com

diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h index b51c207..6324537 100644 --- a/include/sound/soc-topology.h +++ b/include/sound/soc-topology.h @@ -123,6 +123,12 @@ struct snd_soc_tplg_ops { int (*dai_unload)(struct snd_soc_component *, struct snd_soc_dobj *);

+ /* DAI link - used for any driver specific init */ + int (*link_load)(struct snd_soc_component *, + struct snd_soc_dai_link *link); + int (*link_unload)(struct snd_soc_component *, + struct snd_soc_dobj *); + /* callback to handle vendor bespoke data */ int (*vendor_load)(struct snd_soc_component *, struct snd_soc_tplg_hdr *); diff --git a/include/sound/soc.h b/include/sound/soc.h index 4d07a9e..31fe60a 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1039,6 +1039,7 @@ struct snd_soc_dai_link { unsigned int ignore_pmdown_time:1;

struct list_head list; /* dai link list of the soc card */ + struct snd_soc_dobj dobj; };

struct snd_soc_codec_conf { diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 2201261..d07c6b0 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -340,6 +340,16 @@ static int soc_tplg_dai_load(struct soc_tplg *tplg, return 0; }

+/* pass dynamic FE DAI configurations to component driver */ +static int soc_tplg_dai_link_load(struct soc_tplg *tplg, + struct snd_soc_dai_link *link) +{ + if (tplg->comp && tplg->ops && tplg->ops->link_load) + return tplg->ops->link_load(tplg->comp, link); + + return 0; +} + /* tell the component driver that all firmware has been loaded in this request */ static void soc_tplg_complete(struct soc_tplg *tplg) { @@ -1617,10 +1627,46 @@ static int soc_tplg_dai_create(struct soc_tplg *tplg, return snd_soc_add_dai(tplg->comp, dai_drv); }

+static int soc_tplg_fe_link_create(struct soc_tplg *tplg, + struct snd_soc_tplg_pcm *pcm) +{ + struct snd_soc_dai_link *link; + int ret; + + link = kzalloc(sizeof(struct snd_soc_dai_link), GFP_KERNEL); + if (link == NULL) + return -ENOMEM; + + link->name = pcm->pcm_name; + link->stream_name = pcm->pcm_name; + + /* pass control to component driver for optional further init */ + ret = soc_tplg_dai_link_load(tplg, link); + if (ret < 0) { + dev_err(tplg->comp->dev, "ASoC: FE link loading failed\n"); + kfree(link); + return ret; + } + + link->dobj.index = tplg->index; + link->dobj.ops = tplg->ops; + link->dobj.type = SND_SOC_DOBJ_DAI_LINK; + list_add(&link->dobj.list, &tplg->comp->dobj_list); + + snd_soc_add_dai_link(tplg->comp->card, link); + return 0; +} + static int soc_tplg_pcm_create(struct soc_tplg *tplg, struct snd_soc_tplg_pcm *pcm) { - return soc_tplg_dai_create(tplg, pcm); + int ret; + + ret = soc_tplg_dai_create(tplg, pcm); + if (ret < 0) + return ret; + + return soc_tplg_fe_link_create(tplg, pcm); }

static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,