diff options
| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2017-08-28 12:04:14 +0200 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2017-09-04 14:49:34 +0100 |
| commit | f0b638a7f6dba2eb6bf99fc648eab77f7ad5e59f (patch) | |
| tree | 6b57cb6b085a9f0bbeada8a8da1df0f09e56bf4a /drivers/iio/adc/stm32-adc.c | |
| parent | d8958824cf0714cc4ddcf320cf12028277ad55c4 (diff) | |
iio: adc: stm32: add support for lptimer triggers
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@st.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/iio/adc/stm32-adc.c')
| -rw-r--r-- | drivers/iio/adc/stm32-adc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 5bfcc1f13105..1147d7e9055b 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 @@ static struct stm32_adc_trig_info stm32h7_adc_trigs[] = { { 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); |