linux-kernel - [PATCH v4 08/11] counter: stm32-timer-cnt: introduce channels

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Message-ID: <20240227173803.53906-9-fabrice.gasnier@foss.st.com>
Date: Tue, 27 Feb 2024 18:38:00 +0100
From: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
To: <william.gray@...aro.org>
CC: <lee@...nel.org>, <alexandre.torgue@...s.st.com>,
        <fabrice.gasnier@...s.st.com>, <linux-iio@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v4 08/11] counter: stm32-timer-cnt: introduce channels

Simply add channels 3 and 4 that can be used for capture. Statically
add them, despite some timers doesn't have them. Rather rely on
stm32_action_read that will report "none" action for these currently.

Reviewed-by: William Breathitt Gray <william.gray@...aro.org>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
---
Changes in v4:
- Add William's Reviewed-by tag
Changes in v3:
- New patch split from:
  "counter: stm32-timer-cnt: populate capture channels and check encoder"
---
 drivers/counter/stm32-timer-cnt.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c
index 144e040fa457..66039d1b3642 100644
--- a/drivers/counter/stm32-timer-cnt.c
+++ b/drivers/counter/stm32-timer-cnt.c
@@ -25,6 +25,8 @@
 #define STM32_CH1_SIG		0
 #define STM32_CH2_SIG		1
 #define STM32_CLOCK_SIG		2
+#define STM32_CH3_SIG		3
+#define STM32_CH4_SIG		4
 
 struct stm32_timer_regs {
 	u32 cr1;
@@ -365,6 +367,14 @@ static struct counter_signal stm32_signals[] = {
 		.ext = stm32_count_clock_ext,
 		.num_ext = ARRAY_SIZE(stm32_count_clock_ext),
 	},
+	{
+		.id = STM32_CH3_SIG,
+		.name = "Channel 3"
+	},
+	{
+		.id = STM32_CH4_SIG,
+		.name = "Channel 4"
+	},
 };
 
 static struct counter_synapse stm32_count_synapses[] = {
@@ -383,6 +393,16 @@ static struct counter_synapse stm32_count_synapses[] = {
 		.num_actions = ARRAY_SIZE(stm32_clock_synapse_actions),
 		.signal = &stm32_signals[STM32_CLOCK_SIG]
 	},
+	{
+		.actions_list = stm32_synapse_actions,
+		.num_actions = ARRAY_SIZE(stm32_synapse_actions),
+		.signal = &stm32_signals[STM32_CH3_SIG]
+	},
+	{
+		.actions_list = stm32_synapse_actions,
+		.num_actions = ARRAY_SIZE(stm32_synapse_actions),
+		.signal = &stm32_signals[STM32_CH4_SIG]
+	},
 };
 
 static struct counter_count stm32_counts = {
-- 
2.25.1