[PATCH v5 resend 0/4] ASoC: grace time for DPCM cleanup
Hi Mark, Pierre-Louis, Jerome Cc each ASoC driver maintainer
2 weeks past. This is resend of v5 of DPCM cleanup
As we discussed in [1], we don't need to use dpcm_playback/capture flag, so we remove it. But we have been using it for 10 years, some driver might get damage. The most likely case is that the device/driver can use both playback/capture, but have only one flag, and not using xxx_only flag. [1/3] patch indicates warning in such case.
These adds grace time for DPCM cleanup. I'm not sure when dpcm_xxx will be removed, and Codec check bypass will be error, but maybe v6.11 or v6.12 ? Please check each driver by that time.
Previous patch-set try to check both CPU and Codec in DPCM, but we noticed that there are some special DAI which we can't handle today [2]. So I will escape it in this patch-set.
[1] https://lore.kernel.org/r/87edaym2cg.wl-kuninori.morimoto.gx@renesas.com [2] https://lore.kernel.org/all/3e67d62d-fe08-4f55-ab5b-ece8a57154f9@linux.intel...
Link: https://lore.kernel.org/r/87edaym2cg.wl-kuninori.morimoto.gx@renesas.com Link: https://lore.kernel.org/r/87wmo6dyxg.wl-kuninori.morimoto.gx@renesas.com Link: https://lore.kernel.org/r/87msole5wc.wl-kuninori.morimoto.gx@renesas.com Link: https://lore.kernel.org/r/871q5tnuok.wl-kuninori.morimoto.gx@renesas.com
v4 -> v5 - typo fix: limition -> limitation - typo fix: catpure -> capture - include Intel patch
v3 -> v4 - don't check Codec on DPCM - include Jerome's dpcm_xxx update patch
v2 -> v3 - tidyup typo (reuqsts -> requests) - add Tested-by on git-log
v1 -> v2 - tidyup Codec check warning output condition
Jerome Brunet (1): ASoC: amlogic: do not use dpcm_playback/capture flags
Kuninori Morimoto (2): ASoC: soc-pcm: Indicate warning if dpcm_playback/capture were used for availability limition ASoC: remove snd_soc_dai_link_set_capabilities()
Pierre-Louis Bossart (1): ASoC: Intel: sof_sdw: use playback/capture_only flags
include/sound/soc-dai.h | 1 - include/sound/soc.h | 1 + sound/soc/fsl/imx-card.c | 3 -- sound/soc/generic/audio-graph-card.c | 2 - sound/soc/generic/audio-graph-card2.c | 2 - sound/soc/generic/simple-card.c | 2 - sound/soc/intel/boards/sof_sdw.c | 4 +- sound/soc/meson/axg-card.c | 11 +++-- sound/soc/meson/gx-card.c | 1 - sound/soc/meson/meson-card-utils.c | 4 +- sound/soc/qcom/common.c | 1 - sound/soc/soc-dai.c | 38 ---------------- sound/soc/soc-pcm.c | 65 +++++++++++++++------------ 13 files changed, 47 insertions(+), 88 deletions(-)
I have been wondering why DPCM needs special flag (= dpcm_playback/capture) to use it. Below is the history why it was added to ASoC.
(A) In beginning, there was no dpcm_xxx flag on ASoC. It checks channels_min for DPCM, same as current non-DPCM. Let's name it as "validation check" here.
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { if (cpu_dai->driver->playback.channels_min) playback = 1; if (cpu_dai->driver->capture.channels_min) capture = 1;
(B) commit 1e9de42f4324 ("ASoC: dpcm: Explicitly set BE DAI link supported stream directions") force to use dpcm_xxx flag on DPCM. According to this commit log, this is because "Some BE dummy DAI doesn't set channels_min for playback/capture". But we don't know which DAI is it, and not know why it can't/don't have channels_min. Let's name it as "no_chan_DAI" here. According to the code and git-log, it is used as DCPM-BE and is CPU DAI. I think the correct solution was set channels_min on "no_chan_DAI" side, not update ASoC framework side. But everything is under smoke today.
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { playback = rtd->dai_link->dpcm_playback; capture = rtd->dai_link->dpcm_capture;
(C) commit 9b5db059366a ("ASoC: soc-pcm: dpcm: Only allow playback/capture if supported") checks channels_min (= validation check) again. Because DPCM availability was handled by dpcm_xxx flag at that time, but some Sound Card set it even though it wasn't available. Clearly there's a contradiction here. I think correct solution was update Sound Card side instead of ASoC framework. Sound Card side will be updated to handle this issue later (commit 25612477d20b ("ASoC: soc-dai: set dai_link dpcm_ flags with a helper"))
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { ... playback = rtd->dai_link->dpcm_playback && snd_soc_dai_stream_valid(cpu_dai, ...); capture = rtd->dai_link->dpcm_capture && snd_soc_dai_stream_valid(cpu_dai, ...);
This (C) patch should have broken "no_chan_DAI" which doesn't have channels_min, but there was no such report during this 4 years. Possibilities case are as follows - No one is using "no_chan_DAI" - "no_chan_DAI" is no longer exist : was removed ? - "no_chan_DAI" is no longer exist : has channels_min ?
Because of these history, this dpcm_xxx is unneeded flag today. But because we have been used it for 10 years since (B), it may have been used differently. For example some DAI available both playback/capture, but it set dpcm_playback flag only, in this case dpcm_xxx flag is used as availability limitation. We can use playback_only flag instead in this case, but it is very difficult to find such DAI today.
Let's add grace time to remove dpcm_playback/capture flag.
This patch don't use dpcm_xxx flag anymore, and indicates warning to use xxx_only flag if both playback/capture were available but using only one of dpcm_xxx flag, and not using xxx_only flag.
Link: https://lore.kernel.org/r/87edaym2cg.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Tested-by: Jerome Brunet jbrunet@baylibre.com --- include/sound/soc.h | 1 + sound/soc/soc-pcm.c | 65 ++++++++++++++++++++++++++------------------- 2 files changed, 38 insertions(+), 28 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 33671437ee896..2a3da1d913776 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -815,6 +815,7 @@ struct snd_soc_dai_link { /* This DAI link can route to other DAI links at runtime (Frontend)*/ unsigned int dynamic:1;
+ /* REMOVE ME */ /* DPCM capture and Playback support */ unsigned int dpcm_capture:1; unsigned int dpcm_playback:1; diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 711b2f49ed88d..7fe5ee3bcfd4e 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -2795,6 +2795,7 @@ static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, { struct snd_soc_dai_link *dai_link = rtd->dai_link; struct snd_soc_dai *cpu_dai; + struct snd_soc_dai_link_ch_map *ch_maps; int has_playback = 0; int has_capture = 0; int i; @@ -2805,43 +2806,51 @@ static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, }
if (dai_link->dynamic || dai_link->no_pcm) { - int stream;
- if (dai_link->dpcm_playback) { - stream = SNDRV_PCM_STREAM_PLAYBACK; + for_each_rtd_ch_maps(rtd, i, ch_maps) { + cpu_dai = snd_soc_rtd_to_cpu(rtd, ch_maps->cpu);
- for_each_rtd_cpu_dais(rtd, i, cpu_dai) { - if (snd_soc_dai_stream_valid(cpu_dai, stream)) { - has_playback = 1; - break; - } - } - if (!has_playback) { - dev_err(rtd->card->dev, - "No CPU DAIs support playback for stream %s\n", - dai_link->stream_name); - return -EINVAL; - } + if (snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK)) + has_playback = 1; + + if (snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE)) + has_capture = 1; } - if (dai_link->dpcm_capture) { - stream = SNDRV_PCM_STREAM_CAPTURE;
- for_each_rtd_cpu_dais(rtd, i, cpu_dai) { - if (snd_soc_dai_stream_valid(cpu_dai, stream)) { - has_capture = 1; - break; - } + /* + * REMOVE ME + * + * dpcm_xxx flag will be removed soon, Indicates warning if dpcm_xxx flag was used + * as availability limitation + */ + if (has_playback && has_capture) { + if ( dai_link->dpcm_playback && + !dai_link->dpcm_capture && + !dai_link->playback_only) { + dev_warn(rtd->card->dev, + "both playback/capture are available," + " but not using playback_only flag (%s)\n", + dai_link->stream_name); + dev_warn(rtd->card->dev, + "dpcm_playback/capture are no longer needed," + " please use playback/capture_only instead\n"); + has_capture = 0; }
- if (!has_capture) { - dev_err(rtd->card->dev, - "No CPU DAIs support capture for stream %s\n", - dai_link->stream_name); - return -EINVAL; + if (!dai_link->dpcm_playback && + dai_link->dpcm_capture && + !dai_link->capture_only) { + dev_warn(rtd->card->dev, + "both playback/capture are available," + " but not using capture_only flag (%s)\n", + dai_link->stream_name); + dev_warn(rtd->card->dev, + "dpcm_playback/capture are no longer needed," + " please use playback/capture_only instead\n"); + has_playback = 0; } } } else { - struct snd_soc_dai_link_ch_map *ch_maps; struct snd_soc_dai *codec_dai;
/* Adapt stream for codec2codec links */
dpcm_xxx flags are no longer needed.
We need to use xxx_only flags instead if needed, but snd_soc_dai_link_set_capabilities() user adds dpcm_xxx if playback/capture were available. Thus converting dpcm_xxx to xxx_only is not needed. Just remove it.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Tested-by: Jerome Brunet jbrunet@baylibre.com --- include/sound/soc-dai.h | 1 - sound/soc/fsl/imx-card.c | 3 --- sound/soc/generic/audio-graph-card.c | 2 -- sound/soc/generic/audio-graph-card2.c | 2 -- sound/soc/generic/simple-card.c | 2 -- sound/soc/meson/axg-card.c | 1 - sound/soc/meson/gx-card.c | 1 - sound/soc/qcom/common.c | 1 - sound/soc/soc-dai.c | 38 --------------------------- 9 files changed, 51 deletions(-)
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 15ef268c98450..e73e906298adc 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -219,7 +219,6 @@ void snd_soc_dai_resume(struct snd_soc_dai *dai); int snd_soc_dai_compress_new(struct snd_soc_dai *dai, struct snd_soc_pcm_runtime *rtd, int num); bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream); -void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link); void snd_soc_dai_action(struct snd_soc_dai *dai, int stream, int action); static inline void snd_soc_dai_activate(struct snd_soc_dai *dai, diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c index 0e18ccabe28c3..98b37dd2b9013 100644 --- a/sound/soc/fsl/imx-card.c +++ b/sound/soc/fsl/imx-card.c @@ -650,9 +650,6 @@ static int imx_card_parse_of(struct imx_card_data *data) link->ops = &imx_aif_ops; }
- if (link->no_pcm || link->dynamic) - snd_soc_dai_link_set_capabilities(link); - /* Get dai fmt */ ret = simple_util_parse_daifmt(dev, np, codec, NULL, &link->dai_fmt); diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 7b981aa8690ac..2495b0ca3d2c0 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -265,8 +265,6 @@ static int graph_dai_link_of_dpcm(struct simple_util_priv *priv,
graph_parse_convert(dev, ep, &dai_props->adata);
- snd_soc_dai_link_set_capabilities(dai_link); - ret = graph_link_init(priv, cpu_ep, codec_ep, li, dai_name);
li->link++; diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c index 8eea818887580..d7641923fcbb4 100644 --- a/sound/soc/generic/audio-graph-card2.c +++ b/sound/soc/generic/audio-graph-card2.c @@ -953,8 +953,6 @@ int audio_graph2_link_dpcm(struct simple_util_priv *priv, graph_parse_convert(ep, dai_props); /* at node of <dpcm> */ graph_parse_convert(rep, dai_props); /* at node of <CPU/Codec> */
- snd_soc_dai_link_set_capabilities(dai_link); - graph_link_init(priv, lnk, cpu_port, codec_port, li, is_cpu); err: of_node_put(ep); diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index 2de5e6efe947f..0eefb348ecd3a 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -280,8 +280,6 @@ static int simple_dai_link_of_dpcm(struct simple_util_priv *priv,
simple_parse_convert(dev, np, &dai_props->adata);
- snd_soc_dai_link_set_capabilities(dai_link); - ret = simple_link_init(priv, np, codec, li, prefix, dai_name);
out_put_node: diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c index 8c5605c1e34e8..09aa36e94c85b 100644 --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -339,7 +339,6 @@ static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np, dai_link->num_c2c_params = 1; } else { dai_link->no_pcm = 1; - snd_soc_dai_link_set_capabilities(dai_link); if (axg_card_cpu_is_tdm_iface(dai_link->cpus->of_node)) ret = axg_card_parse_tdm(card, np, index); } diff --git a/sound/soc/meson/gx-card.c b/sound/soc/meson/gx-card.c index f1539e542638d..7edca3e49c8f0 100644 --- a/sound/soc/meson/gx-card.c +++ b/sound/soc/meson/gx-card.c @@ -107,7 +107,6 @@ static int gx_card_add_link(struct snd_soc_card *card, struct device_node *np, dai_link->num_c2c_params = 1; } else { dai_link->no_pcm = 1; - snd_soc_dai_link_set_capabilities(dai_link); /* Check if the cpu is the i2s encoder and parse i2s data */ if (gx_card_cpu_identify(dai_link->cpus, "I2S Encoder")) ret = gx_card_parse_i2s(card, np, index); diff --git a/sound/soc/qcom/common.c b/sound/soc/qcom/common.c index 3d02aa3844f29..11cbcb588336c 100644 --- a/sound/soc/qcom/common.c +++ b/sound/soc/qcom/common.c @@ -145,7 +145,6 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
if (platform || !codec) { /* DPCM */ - snd_soc_dai_link_set_capabilities(link); link->ignore_suspend = 1; link->nonatomic = 1; } diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c index 03afd5efb24cb..54348a055566a 100644 --- a/sound/soc/soc-dai.c +++ b/sound/soc/soc-dai.c @@ -479,44 +479,6 @@ bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int dir) return stream->channels_min; }
-/* - * snd_soc_dai_link_set_capabilities() - set dai_link properties based on its DAIs - */ -void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link) -{ - bool supported[SNDRV_PCM_STREAM_LAST + 1]; - int direction; - - for_each_pcm_streams(direction) { - struct snd_soc_dai_link_component *cpu; - struct snd_soc_dai_link_component *codec; - struct snd_soc_dai *dai; - bool supported_cpu = false; - bool supported_codec = false; - int i; - - for_each_link_cpus(dai_link, i, cpu) { - dai = snd_soc_find_dai_with_mutex(cpu); - if (dai && snd_soc_dai_stream_valid(dai, direction)) { - supported_cpu = true; - break; - } - } - for_each_link_codecs(dai_link, i, codec) { - dai = snd_soc_find_dai_with_mutex(codec); - if (dai && snd_soc_dai_stream_valid(dai, direction)) { - supported_codec = true; - break; - } - } - supported[direction] = supported_cpu && supported_codec; - } - - dai_link->dpcm_playback = supported[SNDRV_PCM_STREAM_PLAYBACK]; - dai_link->dpcm_capture = supported[SNDRV_PCM_STREAM_CAPTURE]; -} -EXPORT_SYMBOL_GPL(snd_soc_dai_link_set_capabilities); - void snd_soc_dai_action(struct snd_soc_dai *dai, int stream, int action) {
From: Jerome Brunet jbrunet@baylibre.com
dpcm_playback/capture flags are being deprecated in ASoC. Use playback/capture_only flags instead
Suggested-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Signed-off-by: Jerome Brunet jbrunet@baylibre.com Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/meson/axg-card.c | 10 +++++----- sound/soc/meson/meson-card-utils.c | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c index 09aa36e94c85b..646ab87afac24 100644 --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -132,7 +132,7 @@ static int axg_card_add_tdm_loopback(struct snd_soc_card *card, lb->stream_name = lb->name; lb->cpus->of_node = pad->cpus->of_node; lb->cpus->dai_name = "TDM Loopback"; - lb->dpcm_capture = 1; + lb->capture_only = 1; lb->no_pcm = 1; lb->ops = &axg_card_tdm_be_ops; lb->init = axg_card_tdm_dai_lb_init; @@ -176,7 +176,7 @@ static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card,
/* Disable playback is the interface has no tx slots */ if (!tx) - link->dpcm_playback = 0; + link->capture_only = 1;
for (i = 0, rx = 0; i < AXG_TDM_NUM_LANES; i++) { snprintf(propname, 32, "dai-tdm-slot-rx-mask-%d", i); @@ -186,9 +186,9 @@ static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card,
/* Disable capture is the interface has no rx slots */ if (!rx) - link->dpcm_capture = 0; + link->playback_only = 1;
- /* ... but the interface should at least have one of them */ + /* ... but the interface should at least have one direction */ if (!tx && !rx) { dev_err(card->dev, "tdm link has no cpu slots\n"); return -EINVAL; @@ -275,7 +275,7 @@ static int axg_card_parse_tdm(struct snd_soc_card *card, return ret;
/* Add loopback if the pad dai has playback */ - if (link->dpcm_playback) { + if (!link->capture_only) { ret = axg_card_add_tdm_loopback(card, index); if (ret) return ret; diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c index ed6c7e2f609c9..1a4ef124e4e25 100644 --- a/sound/soc/meson/meson-card-utils.c +++ b/sound/soc/meson/meson-card-utils.c @@ -186,9 +186,9 @@ int meson_card_set_fe_link(struct snd_soc_card *card, link->dpcm_merged_rate = 1;
if (is_playback) - link->dpcm_playback = 1; + link->playback_only = 1; else - link->dpcm_capture = 1; + link->capture_only = 1;
return meson_card_set_link_name(card, link, node, "fe"); }
From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
Prepare for removal of dpcm_playback and dpcm_capture flags in dailinks.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/intel/boards/sof_sdw.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c index b646b32dd3119..3d11718198650 100644 --- a/sound/soc/intel/boards/sof_sdw.c +++ b/sound/soc/intel/boards/sof_sdw.c @@ -1271,8 +1271,8 @@ static void init_dai_link(struct device *dev, struct snd_soc_dai_link *dai_links dai_links->num_cpus = cpus_num; dai_links->codecs = codecs; dai_links->num_codecs = codecs_num; - dai_links->dpcm_playback = playback; - dai_links->dpcm_capture = capture; + dai_links->playback_only = playback && !capture; + dai_links->capture_only = !playback && capture; dai_links->init = init; dai_links->ops = ops; }
participants (1)
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Kuninori Morimoto