linux-kernel - [PATCH 1/4] hwmon: emc2305: Add support for PWM frequency, polarity and output

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Message-Id: <20250603113125.3175103-2-florin.leotescu@oss.nxp.com>
Date: Tue,  3 Jun 2025 14:31:22 +0300
From: florin.leotescu@....nxp.com
To: Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Florin Leotescu <florin.leotescu@....com>,
	linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: viorel.suman@....com,
	carlos.song@....com,
	daniel.baluta@....com,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	festevam@...il.com
Subject: [PATCH 1/4] hwmon: emc2305: Add support for PWM frequency, polarity and output

From: Florin Leotescu <florin.leotescu@....com>

Add three new attributes to the driver data structures to support
configuration of PWM frequency, PWM polarity and PWM output config.

Signed-off-by: Florin Leotescu <florin.leotescu@....com>
---
 drivers/hwmon/emc2305.c               | 6 ++++++
 include/linux/platform_data/emc2305.h | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/hwmon/emc2305.c b/drivers/hwmon/emc2305.c
index 234c54956a4b..8fc4fcf8a063 100644
--- a/drivers/hwmon/emc2305.c
+++ b/drivers/hwmon/emc2305.c
@@ -89,8 +89,11 @@ struct emc2305_cdev_data {
  * @hwmon_dev: hwmon device
  * @max_state: maximum cooling state of the cooling device
  * @pwm_num: number of PWM channels
+ * @pwm_output_mask: PWM output mask
+ * @pwm_polarity_mask: PWM polarity mask
  * @pwm_separate: separate PWM settings for every channel
  * @pwm_min: array of minimum PWM per channel
+ * @pwm_freq: array of PWM frequency per channel
  * @cdev_data: array of cooling devices data
  */
 struct emc2305_data {
@@ -98,8 +101,11 @@ struct emc2305_data {
 	struct device *hwmon_dev;
 	u8 max_state;
 	u8 pwm_num;
+	u8 pwm_output_mask;
+	u8 pwm_polarity_mask;
 	bool pwm_separate;
 	u8 pwm_min[EMC2305_PWM_MAX];
+	u16 pwm_freq[EMC2305_PWM_MAX];
 	struct emc2305_cdev_data cdev_data[EMC2305_PWM_MAX];
 };
 
diff --git a/include/linux/platform_data/emc2305.h b/include/linux/platform_data/emc2305.h
index 54d672dd6f7d..76043a97f975 100644
--- a/include/linux/platform_data/emc2305.h
+++ b/include/linux/platform_data/emc2305.h
@@ -9,14 +9,20 @@
  * struct emc2305_platform_data - EMC2305 driver platform data
  * @max_state: maximum cooling state of the cooling device;
  * @pwm_num: number of active channels;
+ * @pwm_output_mask: PWM output mask
+ * @pwm_polarity_mask: PWM polarity mask
  * @pwm_separate: separate PWM settings for every channel;
  * @pwm_min: array of minimum PWM per channel;
+ * @pwm_freq: array of PWM frequency per channel
  */
 struct emc2305_platform_data {
 	u8 max_state;
 	u8 pwm_num;
+	u8 pwm_output_mask;
+	u8 pwm_polarity_mask;
 	bool pwm_separate;
 	u8 pwm_min[EMC2305_PWM_MAX];
+	u16 pwm_freq[EMC2305_PWM_MAX];
 };
 
 #endif
-- 
2.34.1