From: Olivier Moysan olivier.moysan@st.com
[ 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 --- sound/soc/stm/stm32_sai_sub.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c index 2fb2b914e78b4..6c2e69e32c864 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, };