On Fri, 7 Jul 2017 18:31:08 +0200
Fabrice Gasnier <fabrice.gasnier@xxxxxx> wrote:
> STM32 ADC supports hardware triggers like STM32 Low-Power Timer.
> For instance, STM32H7 ADC may be triggered by instances 1, 2 or 3.
> Add hardware triggered mode so Low-Power Timer Trigger driver can
> validate device.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx>
> ---
> drivers/iio/adc/stm32-adc.c | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
> index 5bfcc1f..1147d7e 100644
> --- a/drivers/iio/adc/stm32-adc.c
> +++ b/drivers/iio/adc/stm32-adc.c
> @@ -25,6 +25,7 @@
> #include <linux/dmaengine.h>
> #include <linux/iio/iio.h>
> #include <linux/iio/buffer.h>
> +#include <linux/iio/timer/stm32-lptim-trigger.h>
> #include <linux/iio/timer/stm32-timer-trigger.h>
> #include <linux/iio/trigger.h>
> #include <linux/iio/trigger_consumer.h>
> @@ -182,6 +183,11 @@ enum stm32_adc_extsel {
> STM32_EXT13,
> STM32_EXT14,
> STM32_EXT15,
> + STM32_EXT16,
> + STM32_EXT17,
> + STM32_EXT18,
> + STM32_EXT19,
> + STM32_EXT20,
> };
>
> /**
> @@ -480,6 +486,9 @@ struct stm32_adc_info {
> { TIM4_TRGO, STM32_EXT12 },
> { TIM6_TRGO, STM32_EXT13 },
> { TIM3_CH4, STM32_EXT15 },
> + { LPTIM1_OUT, STM32_EXT18 },
> + { LPTIM2_OUT, STM32_EXT19 },
> + { LPTIM3_OUT, STM32_EXT20 },
> {},
> };
>
> @@ -995,7 +1004,8 @@ static int stm32_adc_get_trig_extsel(struct iio_dev *indio_dev,
> * Checking both stm32 timer trigger type and trig name
> * should be safe against arbitrary trigger names.
> */
> - if (is_stm32_timer_trigger(trig) &&
> + if ((is_stm32_timer_trigger(trig) ||
> + is_stm32_lptim_trigger(trig)) &&
> !strcmp(adc->cfg->trigs[i].name, trig->name)) {
> return adc->cfg->trigs[i].extsel;
> }
> @@ -1634,7 +1644,7 @@ static int stm32_adc_probe(struct platform_device *pdev)
> indio_dev->dev.parent = &pdev->dev;
> indio_dev->dev.of_node = pdev->dev.of_node;
> indio_dev->info = &stm32_adc_iio_info;
> - indio_dev->modes = INDIO_DIRECT_MODE;
> + indio_dev->modes = INDIO_DIRECT_MODE | INDIO_HARDWARE_TRIGGERED;
>
> platform_set_drvdata(pdev, adc);
>
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