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2018-01-11IIO: ADC: stm32-dfsdm: avoid unused-variable warningArnd Bergmann1-2/+1
Building with CONFIG_OF disabled produces a compiler warning: drivers/iio/adc/stm32-dfsdm-core.c: In function 'stm32_dfsdm_probe': drivers/iio/adc/stm32-dfsdm-core.c:245:22: error: unused variable 'pnode' [-Werror=unused-variable] This removes the variable and open-codes it in the only place it gets used to avoid that warning. Fixes: bed73904e76f ("IIO: ADC: add stm32 DFSDM core support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10IIO: ADC: stm32_dfsdm_stop_filter() can be statickbuild test robot1-4/+4
Fixes: e2e6771c6462 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support") Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10ASoC: mt8173: remove unnecessary micbias widget in routeBard Liao3-6/+0
The micbias1/2 are connected to route as SUPPLY usage. It was not take effect since they were MICBIAS type. To keep the same register settings, we have to remove it once the micbias1/2 widget is converted to SUPPLY type. Signed-off-by: Bard Liao <bardliao@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10ASoC: sn95031: remove this codeVinod Koul4-1074/+0
This codec was used in MFLD systems in the PMIC chip, we no longer have users for this, so remove it Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10ASoC: Intel: remove mfld_machineVinod Koul2-444/+0
mfld_machine was not getting compiled due to missed Makefile changes. Since no one complained it is safe to assume that it is not being used, so remove it Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10IIO: consumer: allow to set buffer sizesArnaud Pouliquen2-0/+22
Add iio consumer API to set buffer size and watermark according to sysfs API. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10IIO: ADC: add stm32 DFSDM support for PDM microphoneArnaud Pouliquen3-7/+529
This code offers a way to handle PDM audio microphones in ASOC framework. Audio driver should use consumer API. A specific management is implemented for DMA, with a callback, to allows to handle audio buffers efficiently. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10IIO: ADC: add STM32 DFSDM sigma delta ADC supportArnaud Pouliquen3-0/+742
Add DFSDM driver to handle sigma delta ADC. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-10IIO: ADC: add stm32 DFSDM core supportArnaud Pouliquen4-0/+632
Add driver for stm32 DFSDM pheripheral. Its converts a sigma delta stream in n bit samples through a low pass filter and an integrator. stm32-dfsdm-core driver is the core part supporting the filter instances dedicated to sigma-delta ADC or audio PDM microphone purpose. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>