counter: stm32-timer-cnt: Provide defines for slave mode selection
The STM32 timer permits configuration of the counter encoder mode via
the slave mode control register (SMCR) slave mode selection (SMS) bits.
This patch provides preprocessor defines for the supported encoder
modes.
Cc: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/ad3d9cd7af580d586316d368f74964cbc394f981.1630031207.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
index 3fb0deb..1fbc46f 100644
--- a/drivers/counter/stm32-timer-cnt.c
+++ b/drivers/counter/stm32-timer-cnt.c
@@ -93,16 +93,16 @@ static int stm32_count_function_get(struct counter_device *counter,
regmap_read(priv->regmap, TIM_SMCR, &smcr);
switch (smcr & TIM_SMCR_SMS) {
- case 0:
+ case TIM_SMCR_SMS_SLAVE_MODE_DISABLED:
*function = STM32_COUNT_SLAVE_MODE_DISABLED;
return 0;
- case 1:
+ case TIM_SMCR_SMS_ENCODER_MODE_1:
*function = STM32_COUNT_ENCODER_MODE_1;
return 0;
- case 2:
+ case TIM_SMCR_SMS_ENCODER_MODE_2:
*function = STM32_COUNT_ENCODER_MODE_2;
return 0;
- case 3:
+ case TIM_SMCR_SMS_ENCODER_MODE_3:
*function = STM32_COUNT_ENCODER_MODE_3;
return 0;
default:
@@ -119,16 +119,16 @@ static int stm32_count_function_set(struct counter_device *counter,
switch (function) {
case STM32_COUNT_SLAVE_MODE_DISABLED:
- sms = 0;
+ sms = TIM_SMCR_SMS_SLAVE_MODE_DISABLED;
break;
case STM32_COUNT_ENCODER_MODE_1:
- sms = 1;
+ sms = TIM_SMCR_SMS_ENCODER_MODE_1;
break;
case STM32_COUNT_ENCODER_MODE_2:
- sms = 2;
+ sms = TIM_SMCR_SMS_ENCODER_MODE_2;
break;
case STM32_COUNT_ENCODER_MODE_3:
- sms = 3;
+ sms = TIM_SMCR_SMS_ENCODER_MODE_3;
break;
default:
return -EINVAL;