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* adc: stm32-adc: Fix warnings when compiling with W=1Patrick Delaunay2019-07-121-6/+7
| | | | | | | | | | | | | This patch solves the following warnings: drivers/adc/stm32-adc.c: In function 'stm32_adc_chan_of_init': warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (num_channels > adc->cfg->max_channels) { ^ Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
* adc: Add driver for STM32 ADCFabrice Gasnier2018-08-031-0/+257
This patch adds support for STMicroelectronics STM32 ADC (analog to digital converter). It's originally based on Linux kernel v4.18-rcs drivers/iio/adc/stm32-adc*. It's composed of: - core driver (UCLASS_SIMPLE_BUS) manages common resources (clk, regu). - child drivers (UCLASS_ADC) declare each ADC, channels and handle conversions. This driver currently supports STM32H7 and STM32MP1 ADC. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>