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| author | Olivier Moysan <olivier.moysan@st.com> | 2019-11-04 14:36:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 09:19:44 +0100 |
| commit | 22f4892950b2b783f2e2884735549b9441faef12 (patch) | |
| tree | 8ce22832bffd2154a7b0a82d9191316895cb5d63 /sound | |
| parent | 3f034e6889e7f0d369cba911b0b44765c320f0d9 (diff) | |
| download | linux-stable-22f4892950b2b783f2e2884735549b9441faef12.tar.gz linux-stable-22f4892950b2b783f2e2884735549b9441faef12.tar.bz2 linux-stable-22f4892950b2b783f2e2884735549b9441faef12.zip | |
ASoC: stm32: sai: add restriction on mmap support
[ Upstream commit eaf072e512d54c95b0977eda06cbca3151ace1e5 ]
Do not support mmap in S/PDIF mode. In S/PDIF mode
the buffer has to be copied, to allow the channel status
bits insertion.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20191104133654.28750-1-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/stm/stm32_sai_sub.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c index 2fb2b914e78b..6c2e69e32c86 100644 --- a/sound/soc/stm/stm32_sai_sub.c +++ b/sound/soc/stm/stm32_sai_sub.c @@ -994,6 +994,16 @@ static int stm32_sai_pcm_process_spdif(struct snd_pcm_substream *substream, return 0; } +/* No support of mmap in S/PDIF mode */ +static const struct snd_pcm_hardware stm32_sai_pcm_hw_spdif = { + .info = SNDRV_PCM_INFO_INTERLEAVED, + .buffer_bytes_max = 8 * PAGE_SIZE, + .period_bytes_min = 1024, + .period_bytes_max = PAGE_SIZE, + .periods_min = 2, + .periods_max = 8, +}; + static const struct snd_pcm_hardware stm32_sai_pcm_hw = { .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP, .buffer_bytes_max = 8 * PAGE_SIZE, @@ -1050,7 +1060,7 @@ static const struct snd_dmaengine_pcm_config stm32_sai_pcm_config = { }; static const struct snd_dmaengine_pcm_config stm32_sai_pcm_config_spdif = { - .pcm_hardware = &stm32_sai_pcm_hw, + .pcm_hardware = &stm32_sai_pcm_hw_spdif, .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, .process = stm32_sai_pcm_process_spdif, }; |