diff mbox series

[v16,02/14] counter: stm32-timer-cnt: Provide defines for slave mode selection

Message ID ad3d9cd7af580d586316d368f74964cbc394f981.1630031207.git.vilhelm.gray@gmail.com (mailing list archive)
State Changes Requested
Headers show
Series Introduce the Counter character device interface | expand

Commit Message

William Breathitt Gray Aug. 27, 2021, 3:47 a.m. UTC 
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>
---
 drivers/counter/stm32-timer-cnt.c | 16 ++++++++--------
 include/linux/mfd/stm32-timers.h  |  4 ++++
 2 files changed, 12 insertions(+), 8 deletions(-)

Comments

Fabrice Gasnier Aug. 31, 2021, 1:40 p.m. UTC | #1 
On 8/27/21 5:47 AM, William Breathitt Gray wrote:
> 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>
> ---
>  drivers/counter/stm32-timer-cnt.c | 16 ++++++++--------
>  include/linux/mfd/stm32-timers.h  |  4 ++++
>  2 files changed, 12 insertions(+), 8 deletions(-)

Hi William,

You can add my:
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>

Thanks,
Fabrice

> 
> diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
> index 3fb0debd7425..1fbc46f4ee66 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;
> diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h
> index f8db83aedb2b..5f5c43fd69dd 100644
> --- a/include/linux/mfd/stm32-timers.h
> +++ b/include/linux/mfd/stm32-timers.h
> @@ -82,6 +82,10 @@
>  #define MAX_TIM_ICPSC		0x3
>  #define TIM_CR2_MMS_SHIFT	4
>  #define TIM_CR2_MMS2_SHIFT	20
> +#define TIM_SMCR_SMS_SLAVE_MODE_DISABLED	0 /* counts on internal clock when CEN=1 */
> +#define TIM_SMCR_SMS_ENCODER_MODE_1		1 /* counts TI1FP1 edges, depending on TI2FP2 level */
> +#define TIM_SMCR_SMS_ENCODER_MODE_2		2 /* counts TI2FP2 edges, depending on TI1FP1 level */
> +#define TIM_SMCR_SMS_ENCODER_MODE_3		3 /* counts on both TI1FP1 and TI2FP2 edges */
>  #define TIM_SMCR_TS_SHIFT	4
>  #define TIM_BDTR_BKF_MASK	0xF
>  #define TIM_BDTR_BKF_SHIFT(x)	(16 + (x) * 4)
>
Jonathan Cameron Sept. 8, 2021, 5:31 p.m. UTC | #2 
On Tue, 31 Aug 2021 15:40:37 +0200
Fabrice Gasnier <fabrice.gasnier@foss.st.com> wrote:

> On 8/27/21 5:47 AM, William Breathitt Gray wrote:
> > 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>
> > ---
> >  drivers/counter/stm32-timer-cnt.c | 16 ++++++++--------
> >  include/linux/mfd/stm32-timers.h  |  4 ++++
> >  2 files changed, 12 insertions(+), 8 deletions(-)  
> 
> Hi William,
> 
> You can add my:
> Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Applied.

Thanks,

J
> 
> Thanks,
> Fabrice
> 
> > 
> > diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
> > index 3fb0debd7425..1fbc46f4ee66 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;
> > diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h
> > index f8db83aedb2b..5f5c43fd69dd 100644
> > --- a/include/linux/mfd/stm32-timers.h
> > +++ b/include/linux/mfd/stm32-timers.h
> > @@ -82,6 +82,10 @@
> >  #define MAX_TIM_ICPSC		0x3
> >  #define TIM_CR2_MMS_SHIFT	4
> >  #define TIM_CR2_MMS2_SHIFT	20
> > +#define TIM_SMCR_SMS_SLAVE_MODE_DISABLED	0 /* counts on internal clock when CEN=1 */
> > +#define TIM_SMCR_SMS_ENCODER_MODE_1		1 /* counts TI1FP1 edges, depending on TI2FP2 level */
> > +#define TIM_SMCR_SMS_ENCODER_MODE_2		2 /* counts TI2FP2 edges, depending on TI1FP1 level */
> > +#define TIM_SMCR_SMS_ENCODER_MODE_3		3 /* counts on both TI1FP1 and TI2FP2 edges */
> >  #define TIM_SMCR_TS_SHIFT	4
> >  #define TIM_BDTR_BKF_MASK	0xF
> >  #define TIM_BDTR_BKF_SHIFT(x)	(16 + (x) * 4)
> >
diff mbox series

Patch

diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
index 3fb0debd7425..1fbc46f4ee66 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;
diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h
index f8db83aedb2b..5f5c43fd69dd 100644
--- a/include/linux/mfd/stm32-timers.h
+++ b/include/linux/mfd/stm32-timers.h
@@ -82,6 +82,10 @@ 
 #define MAX_TIM_ICPSC		0x3
 #define TIM_CR2_MMS_SHIFT	4
 #define TIM_CR2_MMS2_SHIFT	20
+#define TIM_SMCR_SMS_SLAVE_MODE_DISABLED	0 /* counts on internal clock when CEN=1 */
+#define TIM_SMCR_SMS_ENCODER_MODE_1		1 /* counts TI1FP1 edges, depending on TI2FP2 level */
+#define TIM_SMCR_SMS_ENCODER_MODE_2		2 /* counts TI2FP2 edges, depending on TI1FP1 level */
+#define TIM_SMCR_SMS_ENCODER_MODE_3		3 /* counts on both TI1FP1 and TI2FP2 edges */
 #define TIM_SMCR_TS_SHIFT	4
 #define TIM_BDTR_BKF_MASK	0xF
 #define TIM_BDTR_BKF_SHIFT(x)	(16 + (x) * 4)