diff options
| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2016-06-09 13:47:05 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-06-13 18:52:00 +0200 |
| commit | 79361b2b98b7b64bcf71e0aa4e4dac497bcb94bc (patch) | |
| tree | 96626073b00934428d9d85f2a2e2937396f01df3 /sound/soc/dwc/Kconfig | |
| parent | ASoC: dwc: Add helper functions to disable/enable irqs (diff) | |
| download | linux-79361b2b98b7b64bcf71e0aa4e4dac497bcb94bc.tar.xz linux-79361b2b98b7b64bcf71e0aa4e4dac497bcb94bc.zip | |
ASoC: dwc: Add PIO PCM extension
A PCM extension was added to I2S driver so that audio
samples are transferred using PIO mode.
The PCM supports two channels @ 16 or 32 bits with rates
32k, 44.1k and 48k.
Although the mainline I2S driver uses ALSA DMA engine the
I2S controller can be built without DMA support, therefore
this is the reason why this extension was added.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Carlos Palminha <palminha@synopsys.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Cc: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/dwc/Kconfig')
| -rw-r--r-- | sound/soc/dwc/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/dwc/Kconfig b/sound/soc/dwc/Kconfig index d50e08517dce..c297efe43861 100644 --- a/sound/soc/dwc/Kconfig +++ b/sound/soc/dwc/Kconfig @@ -7,4 +7,13 @@ config SND_DESIGNWARE_I2S Synopsys desigwnware I2S device. The device supports upto maximum of 8 channels each for play and record. +config SND_DESIGNWARE_PCM + tristate "PCM PIO extension for I2S driver" + depends on SND_DESIGNWARE_I2S + help + Say Y, M or N if you want to add a custom ALSA extension that registers + a PCM and uses PIO to transfer data. + + This functionality is specially suited for I2S devices that don't have + DMA support. |