linux-kernel - [PATCH v16 01/14] counter: stm32-lptimer-cnt: Provide defines for clock polarities

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Message-Id: <a111c8905c467805ca530728f88189b59430f27e.1630031207.git.vilhelm.gray@gmail.com>
Date:   Fri, 27 Aug 2021 12:47:45 +0900
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     jic23@...nel.org
Cc:     linux-stm32@...md-mailman.stormreply.com, kernel@...gutronix.de,
        a.fatoum@...gutronix.de, kamel.bouhara@...tlin.com,
        gwendal@...omium.org, alexandre.belloni@...tlin.com,
        david@...hnology.com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        syednwaris@...il.com, patrick.havelange@...ensium.com,
        fabrice.gasnier@...com, mcoquelin.stm32@...il.com,
        alexandre.torgue@...com, o.rempel@...gutronix.de,
        jarkko.nikula@...ux.intel.com,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Subject: [PATCH v16 01/14] counter: stm32-lptimer-cnt: Provide defines for clock polarities

The STM32 low-power timer permits configuration of the clock polarity
via the LPTIMX_CFGR register CKPOL bits. This patch provides
preprocessor defines for the supported clock polarities.

Cc: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
---
 drivers/counter/stm32-lptimer-cnt.c | 6 +++---
 include/linux/mfd/stm32-lptimer.h   | 5 +++++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c
index 13656957c45f..7367f46c6f91 100644
--- a/drivers/counter/stm32-lptimer-cnt.c
+++ b/drivers/counter/stm32-lptimer-cnt.c
@@ -140,9 +140,9 @@ static const enum counter_function stm32_lptim_cnt_functions[] = {
 };
 
 enum stm32_lptim_synapse_action {
-	STM32_LPTIM_SYNAPSE_ACTION_RISING_EDGE,
-	STM32_LPTIM_SYNAPSE_ACTION_FALLING_EDGE,
-	STM32_LPTIM_SYNAPSE_ACTION_BOTH_EDGES,
+	STM32_LPTIM_SYNAPSE_ACTION_RISING_EDGE = STM32_LPTIM_CKPOL_RISING_EDGE,
+	STM32_LPTIM_SYNAPSE_ACTION_FALLING_EDGE = STM32_LPTIM_CKPOL_FALLING_EDGE,
+	STM32_LPTIM_SYNAPSE_ACTION_BOTH_EDGES = STM32_LPTIM_CKPOL_BOTH_EDGES,
 	STM32_LPTIM_SYNAPSE_ACTION_NONE,
 };
 
diff --git a/include/linux/mfd/stm32-lptimer.h b/include/linux/mfd/stm32-lptimer.h
index 90b20550c1c8..06d3f11dc3c9 100644
--- a/include/linux/mfd/stm32-lptimer.h
+++ b/include/linux/mfd/stm32-lptimer.h
@@ -45,6 +45,11 @@
 #define STM32_LPTIM_PRESC	GENMASK(11, 9)
 #define STM32_LPTIM_CKPOL	GENMASK(2, 1)
 
+/* STM32_LPTIM_CKPOL */
+#define STM32_LPTIM_CKPOL_RISING_EDGE	0
+#define STM32_LPTIM_CKPOL_FALLING_EDGE	1
+#define STM32_LPTIM_CKPOL_BOTH_EDGES	2
+
 /* STM32_LPTIM_ARR */
 #define STM32_LPTIM_MAX_ARR	0xFFFF
 
-- 
2.32.0