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

From: Fabrice Gasnier
Date: Thu Aug 03 2017 - 05:16:37 EST


Add output compare trigger sources available on some instances.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
---
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
--
1.9.1