linux-dev/sound/soc/codecs/rt700.c, branch linus/master

ASoC: rt700: Add endianness flag in snd_soc_component_driver

2022-05-09T11:46:44Z

The endianness flag is used on the CODEC side to specify an ambivalence to endian, typically because it is lost over the hardware link. This device receives audio over a SoundWire DAI and as such should have endianness applied. Signed-off-by: Charles Keepax Link: https://lore.kernel.org/r/20220504170905.332415-30-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC/SoundWire: dai: expand 'stream' concept beyond SoundWire

2021-12-24T14:06:47Z

The HDAudio ASoC support relies on the set_tdm_slots() helper to store the HDaudio stream tag in the tx_mask. This only works because of the pre-existing order in soc-pcm.c, where the hw_params() is handled for codec_dais *before* cpu_dais. When the order is reversed, the stream_tag is used as a mask in the codec fixup functions: /* fixup params based on TDM slot masks */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && codec_dai->tx_mask) soc_pcm_codec_params_fixup(&codec_params, codec_dai->tx_mask); As a result of this confusion, the codec_params_fixup() ends-up generating bad channel masks, depending on what stream_tag was allocated. We could add a flag to state that the tx_mask is really not a mask, but it would be quite ugly to persist in overloading concepts. Instead, this patch suggests a more generic get/set 'stream' API based on the existing model for SoundWire. We can expand the concept to store 'stream' opaque information that is specific to different DAI types. In the case of HDAudio DAIs, we only need to store a stream tag as an unsigned char pointer. The TDM rx_ and tx_masks should really only be used to store masks. Rename get_sdw_stream/set_sdw_stream callbacks and helpers as get_stream/set_stream. No functionality change beyond the rename. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Reviewed-by: Ranjani Sridharan Signed-off-by: Bard Liao Acked-By: Vinod Koul Link: https://lore.kernel.org/r/20211224021034.26635-5-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown

ASoC: rt700-sdw: fix race condition on system suspend

2021-06-21T12:00:43Z

In previous commits we cancelled deferred work, but there is still a window of time where a new interrupt could result in new deferred work executed after the link is disabled, leading to an IO error. This patch uses an 'disable_irq_lock' mutex to prevent new interrupts from happening after the start of the system suspend. The choice of a mutex v. a spinlock is mainly due to the time required to clear interrupts, which requires a command to be transmitted by the SoundWire host IP and acknowledged with an interrupt. The 'interrupt_callback' routine is also not meant to be called from an interrupt context. An additional 'disable_irq' flag prevents race conditions where the status changes before the interrupts are disabled, but the workqueue handling status changes is scheduled after the completion of the system suspend. On resume the interrupts are re-enabled already by the io_init routine so we only clear the flag. BugLink: https://github.com/thesofproject/linux/issues/2943 Fixes: 5f2df2a4583b ('ASoC: rt700: wait for the delayed work to finish when the system suspends') Signed-off-by: Pierre-Louis Bossart Reviewed-by: Bard Liao Reviewed-by: Péter Ujfalusi Link: https://lore.kernel.org/r/20210614180815.153711-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ASoC: rt*: Constify static struct snd_soc_dai_ops

2021-03-10T13:06:33Z

The only usage of them is to assign their address to the ops field in the snd_soc_dai_driver struct, which is a pointer to const. Make them const to allow the compiler to put them in read-only memory. Signed-off-by: Rikard Falkeborn Link: https://lore.kernel.org/r/20210224211918.39109-3-rikard.falkeborn@gmail.com Signed-off-by: Mark Brown

ASoC: codecs: rt*.c: remove useless pointer cast

2020-11-12T15:15:52Z

Pointer cast is not necessary, remove. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Kai Vehmanen Reviewed-by: Rander Wang Link: https://lore.kernel.org/r/20201111214318.150529-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ASoC: codecs: rt*-sdw: fix memory leak in set_sdw_stream()

2020-05-18T11:38:29Z

Now that the sdw_stream is allocated in machine driver, set_sdw_stream() is also called with a NULL argument during the dailink shutdown. In this case, the drivers should not allocate any memory, and just return. Detected with KASAN/kmemleak. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Guennadi Liakhovetski Reviewed-by: Rander Wang Cc: Oder Chiou Cc: Shuming Fan Cc: Jack Yu Link: https://lore.kernel.org/r/20200515211531.11416-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown

ASoC: rt700: remove unused including

2020-01-14T15:23:47Z

Remove including that don't need it. Signed-off-by: YueHaibing Link: https://lore.kernel.org/r/20200114011319.173401-1-yuehaibing@huawei.com Signed-off-by: Mark Brown

ASoC: rt700: add rt700 codec driver

2020-01-10T13:31:49Z

This is the initial codec driver for rt700. Signed-off-by: Shuming Fan Tested-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200110014552.17252-1-shumingf@realtek.com Signed-off-by: Mark Brown