linux-kernel - Re: [PATCH 3/3] iio: trigger: stm32-timer: add output compare triggers

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Message-ID: <20170810003011.11fdb081@archlinux>
Date:   Thu, 10 Aug 2017 00:30:11 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Fabrice Gasnier <fabrice.gasnier@...com>
Cc:     <robh+dt@...nel.org>, <linux@...linux.org.uk>,
        <mark.rutland@....com>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <lars@...afoo.de>, <knaack.h@....de>,
        <pmeerw@...erw.net>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <benjamin.gaignard@...aro.org>,
        <benjamin.gaignard@...com>
Subject: Re: [PATCH 3/3] iio: trigger: stm32-timer: add output compare
 triggers

On Thu, 3 Aug 2017 11:14:14 +0200
Fabrice Gasnier <fabrice.gasnier@...com> wrote:

> Add output compare trigger sources available on some instances.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>
Applied to the togreg branch of iio.git and pushed out as testing.

Thanks,

Jonathan
> ---
>  drivers/iio/trigger/stm32-timer-trigger.c     | 31 +++++++++++++++++----------
>  include/linux/iio/timer/stm32-timer-trigger.h | 12 +++++++++++
>  2 files changed, 32 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c
> index 33890f9..a9bc5b6 100644
> --- a/drivers/iio/trigger/stm32-timer-trigger.c
> +++ b/drivers/iio/trigger/stm32-timer-trigger.c
> @@ -29,12 +29,14 @@
>  	{ TIM7_TRGO,},
>  	{ TIM8_TRGO, TIM8_TRGO2, TIM8_CH1, TIM8_CH2, TIM8_CH3, TIM8_CH4,},
>  	{ TIM9_TRGO, TIM9_CH1, TIM9_CH2,},
> -	{ }, /* timer 10 */
> -	{ }, /* timer 11 */
> +	{ TIM10_OC1,},
> +	{ TIM11_OC1,},
>  	{ TIM12_TRGO, TIM12_CH1, TIM12_CH2,},
> -	{ }, /* timer 13 */
> -	{ }, /* timer 14 */
> +	{ TIM13_OC1,},
> +	{ TIM14_OC1,},
>  	{ TIM15_TRGO,},
> +	{ TIM16_OC1,},
> +	{ TIM17_OC1,},
>  };
>  
>  /* List the triggers accepted by each timer */
> @@ -47,10 +49,10 @@
>  	{ }, /* timer 6 */
>  	{ }, /* timer 7 */
>  	{ TIM1_TRGO, TIM2_TRGO, TIM4_TRGO, TIM5_TRGO,},
> -	{ TIM2_TRGO, TIM3_TRGO,},
> +	{ TIM2_TRGO, TIM3_TRGO, TIM10_OC1, TIM11_OC1,},
>  	{ }, /* timer 10 */
>  	{ }, /* timer 11 */
> -	{ TIM4_TRGO, TIM5_TRGO,},
> +	{ TIM4_TRGO, TIM5_TRGO, TIM13_OC1, TIM14_OC1,},
>  };
>  
>  static const void *stm32h7_valids_table[][MAX_VALIDS] = {
> @@ -65,10 +67,12 @@
>  	{ }, /* timer 9 */
>  	{ }, /* timer 10 */
>  	{ }, /* timer 11 */
> -	{ TIM4_TRGO, TIM5_TRGO,},
> +	{ TIM4_TRGO, TIM5_TRGO, TIM13_OC1, TIM14_OC1,},
>  	{ }, /* timer 13 */
>  	{ }, /* timer 14 */
> -	{ TIM1_TRGO, TIM3_TRGO,},
> +	{ TIM1_TRGO, TIM3_TRGO, TIM16_OC1, TIM17_OC1,},
> +	{ }, /* timer 16 */
> +	{ }, /* timer 17 */
>  };
>  
>  struct stm32_timer_trigger {
> @@ -91,6 +95,11 @@ static bool stm32_timer_is_trgo2_name(const char *name)
>  	return !!strstr(name, "trgo2");
>  }
>  
> +static bool stm32_timer_is_trgo_name(const char *name)
> +{
> +	return (!!strstr(name, "trgo") && !strstr(name, "trgo2"));
> +}
> +
>  static int stm32_timer_start(struct stm32_timer_trigger *priv,
>  			     struct iio_trigger *trig,
>  			     unsigned int frequency)
> @@ -355,6 +364,7 @@ static int stm32_setup_iio_triggers(struct stm32_timer_trigger *priv)
>  
>  	while (cur && *cur) {
>  		struct iio_trigger *trig;
> +		bool cur_is_trgo = stm32_timer_is_trgo_name(*cur);
>  		bool cur_is_trgo2 = stm32_timer_is_trgo2_name(*cur);
>  
>  		if (cur_is_trgo2 && !priv->has_trgo2) {
> @@ -371,10 +381,9 @@ static int stm32_setup_iio_triggers(struct stm32_timer_trigger *priv)
>  
>  		/*
>  		 * sampling frequency and master mode attributes
> -		 * should only be available on trgo trigger which
> -		 * is always the first in the list.
> +		 * should only be available on trgo/trgo2 triggers
>  		 */
> -		if (cur == priv->triggers || cur_is_trgo2)
> +		if (cur_is_trgo || cur_is_trgo2)
>  			trig->dev.groups = stm32_trigger_attr_groups;
>  
>  		iio_trigger_set_drvdata(trig, priv);
> diff --git a/include/linux/iio/timer/stm32-timer-trigger.h b/include/linux/iio/timer/stm32-timer-trigger.h
> index 20f4653..d68add8 100644
> --- a/include/linux/iio/timer/stm32-timer-trigger.h
> +++ b/include/linux/iio/timer/stm32-timer-trigger.h
> @@ -55,12 +55,24 @@
>  #define TIM9_CH1	"tim9_ch1"
>  #define TIM9_CH2	"tim9_ch2"
>  
> +#define TIM10_OC1	"tim10_oc1"
> +
> +#define TIM11_OC1	"tim11_oc1"
> +
>  #define TIM12_TRGO	"tim12_trgo"
>  #define TIM12_CH1	"tim12_ch1"
>  #define TIM12_CH2	"tim12_ch2"
>  
> +#define TIM13_OC1	"tim13_oc1"
> +
> +#define TIM14_OC1	"tim14_oc1"
> +
>  #define TIM15_TRGO	"tim15_trgo"
>  
> +#define TIM16_OC1	"tim16_oc1"
> +
> +#define TIM17_OC1	"tim17_oc1"
> +
>  bool is_stm32_timer_trigger(struct iio_trigger *trig);
>  
>  #endif