linux-toradex.git/sound/soc/dwc, branch v4.9.87

ASoC: dwc: Drop DMA channel names assignment

2016-08-08T10:54:50+00:00

The dw_configure_dai_by_dt() function and further dev->{play,capture}
_dma_data.dt data structures seem to be used in this driver only in case
of a system using devicetree, thus chan_name assignments have no effect
since they will be ignored in dmaengine_pcm_request_chan_of() call and
will be substituted with values taken form dmaengine_pcm_dma_channel_names[]
table ("tx", "rx").

Also there is no any "TX", "RX" dma-names entries in arch/arm/boot/dts,
only lower case "tx", "rx" seem to be used.

Lastly, this driver doesn't set SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME
flag when registering a dmaengine PCM to indicate the chan_name should be
used.

My intention is to eventually remove the struct snd_dmaengine_dai_dma_data
chan_name field as there is also a chan_names[] field in struct
snd_dmaengine_pcm_config which can be used for same purpose.

Signed-off-by: Sylwester Nawrocki 
Signed-off-by: Mark Brown

SoC: dwc: trivial fix of spelling mistake "unsuppted" -> "unsupported"

2016-06-26T01:18:52+00:00

trivial fix to spelling mistake in dev_err message

Signed-off-by: Colin Ian King 
Signed-off-by: Mark Brown

ASoC: dwc: make pcm support built-in when necessary

2016-06-21T18:07:21+00:00

The new PIO mode for the dwc audio driver causes a link failure
when it is built as a loadable module but the audio driver is built-in:

sound/built-in.o: In function `i2s_irq_handler':
:(.text+0x58c64): undefined reference to `dw_pcm_push_tx'
sound/built-in.o: In function `dw_i2s_probe':
:(.text+0x593dc): undefined reference to `dw_pcm_register'

We could link both into a single module, but apparently the
author intended them to be separate, so this instead changes
the Makefile to force the pcm module to be built-in if the
base module is. This is a bit hacky but not as bad as trying
to work around it in Kconfig language.

Signed-off-by: Arnd Bergmann 
Fixes: 79361b2b98b7 ("ASoC: dwc: Add PIO PCM extension")
Signed-off-by: Mark Brown

ASoC: dwc: Add PIO PCM extension

2016-06-13T16:52:00+00:00

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 
Cc: Carlos Palminha 
Cc: Mark Brown 
Cc: Liam Girdwood 
Cc: Jaroslav Kysela 
Cc: Takashi Iwai 
Cc: Rob Herring 
Cc: Alexey Brodkin 
Cc: linux-snps-arc@lists.infradead.org
Cc: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown

ASoC: dwc: Add helper functions to disable/enable irqs

2016-05-30T15:15:21+00:00

Helper functions to disable and enable the I2S interrupts were
added. Only the interrupts of the used channels are enabled.

Also, there is no need to enable irqs at dw_i2s_config(), they
are already enabled at startup.

Signed-off-by: Jose Abreu 
Cc: Carlos Palminha 
Cc: Mark Brown 
Cc: Liam Girdwood 
Cc: Jaroslav Kysela 
Cc: Takashi Iwai 
Cc: Rob Herring 
Cc: Alexey Brodkin 
Cc: linux-snps-arc@lists.infradead.org
Cc: alsa-devel@alsa-project.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Mark Brown

ASoC: dwc: Use fifo depth to program FCR

2016-04-07T17:41:36+00:00

This patch makes Designware I2S driver use the fifo
depth value to program the fifo configuration register
instead of using hardcoded values.

Signed-off-by: Jose Abreu 
Signed-off-by: Mark Brown

ASoC: dwc: Unmask I2S interrupts only for enabled channels

2016-04-05T18:57:54+00:00

There is no need to unmask all interrupts at I2S start. This
can cause performance issues in slower platforms.

Unmask only the interrupts for the used channels.

Signed-off-by: Jose Abreu 
Signed-off-by: Mark Brown

ASoC: dwc: Ensure i2s_reg_comp{1,2} is always initialised

2016-02-02T19:20:18+00:00

In the case that the driver is configured from device-tree
i2s_reg_comp1 and i2s_reg_comp2 aren't initialised, breaking the driver.
Fix this by unconditionally setting these values before checking for quirks.

Fixes: a242cac1d3aa ("ASoC: dwc: add quirk to override COMP_PARAM_1 register")
Signed-off-by: Jon Medhurst 
Signed-off-by: Mark Brown

ASoC: dwc: add quirk to override COMP_PARAM_1 register

2016-01-10T12:11:50+00:00

DWC for capture in ACP 2.x IP reports playback and capture capabilities
though it supports only capture. Added a quirk to override default value
to represent capture capability only.

Signed-off-by: Maruthi Bayyavarapu 
Signed-off-by: Alex Deucher 
Signed-off-by: Mark Brown

ASoC: dwc: reconfigure dwc in 'resume' from 'suspend'

2015-12-07T19:52:02+00:00

DWC IP can be powered off during system suspend in some platforms.
After system is resumed, dwc needs to be programmed again to continue
audio use case.

Signed-off-by: Maruthi Bayyavarapu 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher 
Signed-off-by: Mark Brown