diff options
author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2020-09-29 13:32:01 +0900 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2020-10-26 16:44:18 +0000 |
commit | 4662c59688b8db8834aab14f0d37a4f26fc0dd20 (patch) | |
tree | d63db0e12720306b3c9238b7ae549ab237ad1349 /sound/soc | |
parent | c304c9acb6e60bcc5c4d4b5a72763ca3bdf7d76b (diff) | |
download | linux-4662c59688b8db8834aab14f0d37a4f26fc0dd20.tar.bz2 |
ASoC: soc-pcm: add soc_pcm_hw_clean() and call it from soc_pcm_hw_params/free()
soc_pcm_hw_params() does rollback when failed (A),
but, it is almost same as soc_pcm_hw_free().
static int soc_pcm_hw_params(xxx)
{
...
if (ret < 0)
goto xxx_err;
...
return ret;
^ component_err:
| ...
| interface_err:
(A) ...
| codec_err:
| ...
v return ret;
}
The difference is
soc_pcm_hw_free() is for all dai/component/substream,
rollback is for succeeded part only.
This kind of duplicated code can be a hotbed of bugs,
thus, we want to share soc_pcm_hw_free() and rollback.
Now, soc_pcm_hw_params/free() are handling
1) snd_soc_link_hw_params/free()
2) snd_soc_pcm_component_hw_params/free()
3) snd_soc_dai_hw_params/free()
Now, 1) to 3) are handled.
This patch adds new soc_pcm_hw_clean() and call it from
soc_pcm_hw_params() as rollback, and from soc_pcm_hw_free() as
normal close handler.
Other difference is that soc_pcm_hw_free() handles digital mute
if it was last user. Rollback also handles it by this patch.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87h7rhgqab.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r-- | sound/soc/soc-pcm.c | 56 |
1 files changed, 16 insertions, 40 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index d4dd2dc1b00c..17ff3a369631 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -860,10 +860,7 @@ static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, interval->max = channels; } -/* - * Frees resources allocated by hw_params, can be called multiple times - */ -static int soc_pcm_hw_free(struct snd_pcm_substream *substream) +static int soc_pcm_hw_clean(struct snd_pcm_substream *substream, int rollback) { struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); struct snd_soc_dai *dai; @@ -886,17 +883,17 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) } /* free any machine hw params */ - snd_soc_link_hw_free(substream, 0); + snd_soc_link_hw_free(substream, rollback); /* free any component resources */ - snd_soc_pcm_component_hw_free(substream, 0); + snd_soc_pcm_component_hw_free(substream, rollback); /* now free hw params for the DAIs */ for_each_rtd_dais(rtd, i, dai) { if (!snd_soc_dai_stream_valid(dai, substream->stream)) continue; - snd_soc_dai_hw_free(dai, substream, 0); + snd_soc_dai_hw_free(dai, substream, rollback); } mutex_unlock(&rtd->card->pcm_mutex); @@ -904,6 +901,14 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) } /* + * Frees resources allocated by hw_params, can be called multiple times + */ +static int soc_pcm_hw_free(struct snd_pcm_substream *substream) +{ + return soc_pcm_hw_clean(substream, 0); +} + +/* * Called by ALSA when the hardware params are set by application. This * function can also be called multiple times and can allocate buffers * (using snd_pcm_lib_* ). It's non-atomic. @@ -963,7 +968,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, ret = snd_soc_dai_hw_params(codec_dai, substream, &codec_params); if(ret < 0) - goto codec_err; + goto out; codec_dai->rate = params_rate(&codec_params); codec_dai->channels = params_channels(&codec_params); @@ -983,7 +988,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, ret = snd_soc_dai_hw_params(cpu_dai, substream, params); if (ret < 0) - goto interface_err; + goto out; /* store the parameters for each DAI */ cpu_dai->rate = params_rate(params); @@ -995,41 +1000,12 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, } ret = snd_soc_pcm_component_hw_params(substream, params); - if (ret < 0) - goto component_err; - out: mutex_unlock(&rtd->card->pcm_mutex); - return ret; -component_err: - snd_soc_pcm_component_hw_free(substream, 1); - - i = rtd->num_cpus; - -interface_err: - for_each_rtd_cpu_dais_rollback(rtd, i, cpu_dai) { - if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) - continue; - - snd_soc_dai_hw_free(cpu_dai, substream, 1); - cpu_dai->rate = 0; - } - - i = rtd->num_codecs; - -codec_err: - for_each_rtd_codec_dais_rollback(rtd, i, codec_dai) { - if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) - continue; - - snd_soc_dai_hw_free(codec_dai, substream, 1); - codec_dai->rate = 0; - } - - snd_soc_link_hw_free(substream, 1); + if (ret < 0) + soc_pcm_hw_clean(substream, 1); - mutex_unlock(&rtd->card->pcm_mutex); return ret; } |