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path: root/sound/soc/codecs/dmic.c
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2020-04-22ASoC: dmic: Allow GPIO operations to sleepMark Brown1-2/+2
If there is a power GPIO provided we control it from DAPM context so there is no problem with a sleeping GPIO, use the _cansleep() version of the API to allow this. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com> Link: https://lore.kernel.org/r/20200422083550.50711-1-broonie@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336Thomas Gleixner1-15/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 246 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-07ASoC: dmic: declare trigger function as staticPierre-Louis Bossart1-2/+2
No reason why this is global, fix warnings with W=1 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-28ASoC: dmic: introduce module_param wakeup_delayJenny TC1-0/+5
Introducing a module param for wakeup_delay in order to align with modeswitch_delay parameter. With this change, both wakeup_delay and modeswitch_delay parameters can be passed as module parameters. Signed-off-by: Jenny TC <jenny.tc@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-11-28ASoC: dmic: introduce mode switch delayJenny TC1-0/+35
On startup, applications such as PulseAudio or CRAS enable playback or capture on all PCM devices to verify that configurations are correct, and close them immediately. For DMICs, this can result in the clock being turned off very quickly, which may not compatible with internal state machine transition requirements. This patch add a mode-switch delay which will prevent the clock from being turned off without complying with manufacturer timing specifications. While the DMIC clock may be controlled at a lower level, be it with hardware or firmware, applying the delay during the STOP_TRIGGER phase ensures that there is no race condition, e.g. with the hardware/firmware turning off the clock earlier Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com> Signed-off-by: Jairaj Arava <jairaj.arava@intel.com> Signed-off-by: Harsha Priya <harshapriya.n@intel.com> Signed-off-by: Jenny TC <jenny.tc@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-08-29ASoC: dmic: add DT module aliasJerome Brunet1-0/+1
Before this patch the only alias provided by the dmic module is: alias: platform:dmic-codec Device instantiated from DT will not probe automatically with this After this patch, here is the new alias list: alias: platform:dmic-codec alias: of:N*T*Cdmic-codecC* alias: of:N*T*Cdmic-codec Now the dmic codec probes automatically when instantiated from DT. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-21ASoC: dmic: don't use codec anymoreKuninori Morimoto1-2/+2
commit 6d6c3946d877 ("ASoC: dmic: replace codec to component") replaced codec to component, but commit 05c9b302eda7 ("ASoC: dmic: Add optional wakeup delay") used codec again. This patch fix it up. Fixes: 05c9b302eda7 ("ASoC: dmic: Add optional wakeup delay") Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-19ASoC: dmic: Add optional wakeup delayMatthias Kaehlcke1-28/+35
On some systems a delay is needed after switching on the clocks, to allow the output to stabilize and avoid a popping noise at the beginning of the recording. Add the optional device tree property 'wakeup-delay-ms' and apply the specified delay after enabling the mic. A blocking delay can't be applied in dmic_daiops_trigger() since the function is called in atomic context. Instead use a DAPM event handler to set the enable GPIO and apply the delay in the handler. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12ASoC: dmic: replace codec to componentKuninori Morimoto1-19/+14
Now we can replace Codec to Component. Let's do it. Note: xxx_codec_xxx() -> xxx_component_xxx() .idle_bias_off = 0 -> .idle_bias_on = 1 .ignore_pmdown_time = 0 -> .use_pmdown_time = 1 - -> .endianness = 1 - -> .non_legacy_dai_naming = 1 Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-22ASoC: dmic: Fix check of return value from read of 'num-channels'Matthias Kaehlcke1-1/+1
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 Kaehlcke1-1/+23
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 lin1-1/+47
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 Pouliquen1-0/+6
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 Morimoto1-4/+6
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 Sang1-1/+0
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 Clausen1-13/+4
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 Pemberton1-3/+3
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 Brown1-11/+1
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 Gortmaker1-0/+1
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 Cruz1-1/+25
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 Lambert1-0/+81
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>
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