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path: root/sound/soc/codecs/dmic.c
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2018-01-22ASoC: dmic: Fix check of return value from read of 'num-channels'Matthias Kaehlcke
Commit 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels configurable") introduces an optional property to the device tree to specify the number of DMIC channels. dmic_codec_probe() uses of_property_read_u32() to read the DT value, and expects a return value of -ENOENT when the property does not exist. This expectation is incorrect, the actual value returned in this case is -EINVAL (see of_find_property_value_of_size(), which is called under the hood). Check for -EINVAL instead. Fixes: 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels configurable") Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-09ASoC: codecs: dmic: Make number of channels configurableMatthias Kaehlcke
The DMIC DAI driver specifies a number of 1 to 8 channels for each DAI. The actual number of mics can currently not be configured in the device tree or audio glue, but is derived from the min/max channels of the CPU and codec DAI. A typical CPU DAI has two or more channels, in consequence a single mic is treated as a stereo/multi channel device, even though only one channel carries audio data. This change adds the option to specify the number of used DMIC channels in the device tree. When specified this value overwrites the default channels_max value of 8 in the snd_soc_dai_driver struct of the codec. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-08-17ASoC: codec: use enable pin to control dmic start and stophuang lin
on some board use enable pin to control dmic start and stop, so add this feature in dmic driver. Signed-off-by: Lin Huang <hl@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-08-02ASoC: codec: add DT support in dmic codecArnaud Pouliquen
Add of_table to allows DT probing. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-08ASoC: codec duplicated callback function goes to component on dmicKuninori Morimoto
codec driver and component driver has duplicated callback functions, and codec side functions are just copied to component side when register timing. This was quick-hack, but no longer needed. This patch moves these functions from codec driver to component driver. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20ASoC: codecs: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-08-27ASoC: dmic: Convert table based DAPM setupLars-Peter Clausen
Let the core take care of instantiating the DAPM widgets and routes, this makes the code a bit shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2012-12-10ASoC: codecs: remove __dev* attributesBill Pemberton
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-28ASoC: Convert CODEC drivers to module_platform_driverMark Brown
Factors out a bit of boilerplate. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-10-31sound: Add module.h to the previously silent sound usersPaul Gortmaker
Lots of sound drivers were getting module.h via the implicit presence of it in <linux/device.h> but we are going to clean that up. So fix up those users now. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-05-12ASoC: DMIC codec - Add input widgetMisael Lopez Cruz
Digital microphones can have some additional elements in their audio path (like microphone bias). An input widget is required for digital microphone CODEC driver to allow external connections in machine drivers. Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com> Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-12ASoC: DMIC codec: Adding a generic DMIC codecDavid Lambert
This codec is to be used by the DMIC driver to control the DMIC codec. This driver will be used on future implementations of the DMIC driver to support codec specific features. At this time, the codec driver just registers the codec DAI. Signed-off-by: David Lambert <dlambert@ti.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>