The patch

ALSA: soc-compress: add support to snd_compr_set_runtime_buffer()

has been applied to the asoc tree at

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

From ba02eed9f300b6512181d526311d4e11aaa9714f Mon Sep 17 00:00:00 2001

From: Srinivas Kandagatla srinivas.kandagatla@linaro.org Date: Thu, 15 Nov 2018 18:13:20 +0000 Subject: [PATCH] ALSA: soc-compress: add support to snd_compr_set_runtime_buffer()

Existing compress offload code allocates data buffers using simple kmalloc, however there are situations where these buffers have to be mapped in smmu. So provide a way to set the runtime buffer by the driver itself, simillar to what we do with pcm.

This patch adds support to set runtime dma buffer on compressed stream.

Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- include/sound/compress_driver.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)

diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index ea8c93bbb0e0..0cdc3999ecfa 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -23,6 +23,7 @@ struct snd_compr_ops; * struct snd_compr_runtime: runtime stream description * @state: stream state * @ops: pointer to DSP callbacks + * @dma_buffer_p: runtime dma buffer pointer * @buffer: pointer to kernel buffer, valid only when not in mmap mode or * DSP doesn't implement copy * @buffer_size: size of the above buffer @@ -37,6 +38,7 @@ struct snd_compr_ops; struct snd_compr_runtime { snd_pcm_state_t state; struct snd_compr_ops *ops; + struct snd_dma_buffer *dma_buffer_p; void *buffer; u64 buffer_size; u32 fragment_size; @@ -175,6 +177,23 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream) wake_up(&stream->runtime->sleep); }

+/** + * snd_compr_set_runtime_buffer - Set the Compress runtime buffer + * @substream: compress substream to set + * @bufp: the buffer information, NULL to clear + * + * Copy the buffer information to runtime buffer when @bufp is non-NULL. + * Otherwise it clears the current buffer information. + */ +static inline void snd_compr_set_runtime_buffer( + struct snd_compr_stream *substream, + struct snd_dma_buffer *bufp) +{ + struct snd_compr_runtime *runtime = substream->runtime; + + runtime->dma_buffer_p = bufp; +} + int snd_compr_stop_error(struct snd_compr_stream *stream, snd_pcm_state_t state);