diff mbox series

[v4,1/1] hwmon: npcm750-pwm-fan: Add NPCM8xx support

Message ID 20231031075806.400872-2-tmaimon77@gmail.com (mailing list archive)
State Accepted
Headers show
Series hwmon: npcm: add Arbel NPCM8XX support | expand

Commit Message

Tomer Maimon Oct. 31, 2023, 7:58 a.m. UTC 
Adding Pulse Width Modulation (PWM) and fan tacho NPCM8xx support to
NPCM PWM and fan tacho driver.
NPCM8xx uses a different number of PWM devices.

As part of adding NPCM8XX support:
- Add NPCM8xx specific compatible string.
- Add data to handle architecture-specific PWM parameters.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
---
 drivers/hwmon/npcm750-pwm-fan.c | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

Comments

Guenter Roeck Nov. 2, 2023, 3:14 a.m. UTC | #1 
On Tue, Oct 31, 2023 at 09:58:06AM +0200, Tomer Maimon wrote:
> Adding Pulse Width Modulation (PWM) and fan tacho NPCM8xx support to
> NPCM PWM and fan tacho driver.
> NPCM8xx uses a different number of PWM devices.
> 
> As part of adding NPCM8XX support:
> - Add NPCM8xx specific compatible string.
> - Add data to handle architecture-specific PWM parameters.
> 
> Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>

Applied to hwmon-next. I'll push it after the relase window closes.

Side note: An introductory patch is not necessary for single
patches. Providing the change log in the unnecessary intro patch
only adds additional overhead for no gain.

Guenter
diff mbox series

Patch

diff --git a/drivers/hwmon/npcm750-pwm-fan.c b/drivers/hwmon/npcm750-pwm-fan.c
index 10ed3f4335d4..d99b24c23d25 100644
--- a/drivers/hwmon/npcm750-pwm-fan.c
+++ b/drivers/hwmon/npcm750-pwm-fan.c
@@ -46,9 +46,9 @@ 
 #define NPCM7XX_PWM_CTRL_CH3_EN_BIT		BIT(16)
 
 /* Define the maximum PWM channel number */
-#define NPCM7XX_PWM_MAX_CHN_NUM			8
+#define NPCM7XX_PWM_MAX_CHN_NUM			12
 #define NPCM7XX_PWM_MAX_CHN_NUM_IN_A_MODULE	4
-#define NPCM7XX_PWM_MAX_MODULES                 2
+#define NPCM7XX_PWM_MAX_MODULES                 3
 
 /* Define the Counter Register, value = 100 for match 100% */
 #define NPCM7XX_PWM_COUNTER_DEFAULT_NUM		255
@@ -171,6 +171,10 @@ 
 #define FAN_PREPARE_TO_GET_FIRST_CAPTURE	0x01
 #define FAN_ENOUGH_SAMPLE			0x02
 
+struct npcm_hwmon_info {
+	u32 pwm_max_channel;
+};
+
 struct npcm7xx_fan_dev {
 	u8 fan_st_flg;
 	u8 fan_pls_per_rev;
@@ -204,6 +208,7 @@  struct npcm7xx_pwm_fan_data {
 	struct timer_list fan_timer;
 	struct npcm7xx_fan_dev fan_dev[NPCM7XX_FAN_MAX_CHN_NUM];
 	struct npcm7xx_cooling_device *cdev[NPCM7XX_PWM_MAX_CHN_NUM];
+	const struct npcm_hwmon_info *info;
 	u8 fan_select;
 };
 
@@ -542,7 +547,7 @@  static umode_t npcm7xx_pwm_is_visible(const void *_data, u32 attr, int channel)
 {
 	const struct npcm7xx_pwm_fan_data *data = _data;
 
-	if (!data->pwm_present[channel])
+	if (!data->pwm_present[channel] || channel >= data->info->pwm_max_channel)
 		return 0;
 
 	switch (attr) {
@@ -638,6 +643,10 @@  static const struct hwmon_channel_info * const npcm7xx_info[] = {
 			   HWMON_PWM_INPUT,
 			   HWMON_PWM_INPUT,
 			   HWMON_PWM_INPUT,
+			   HWMON_PWM_INPUT,
+			   HWMON_PWM_INPUT,
+			   HWMON_PWM_INPUT,
+			   HWMON_PWM_INPUT,
 			   HWMON_PWM_INPUT),
 	HWMON_CHANNEL_INFO(fan,
 			   HWMON_F_INPUT,
@@ -670,6 +679,14 @@  static const struct hwmon_chip_info npcm7xx_chip_info = {
 	.info = npcm7xx_info,
 };
 
+static const struct npcm_hwmon_info npxm7xx_hwmon_info = {
+	.pwm_max_channel = 8,
+};
+
+static const struct npcm_hwmon_info npxm8xx_hwmon_info = {
+	.pwm_max_channel = 12,
+};
+
 static u32 npcm7xx_pwm_init(struct npcm7xx_pwm_fan_data *data)
 {
 	int m, ch;
@@ -923,6 +940,10 @@  static int npcm7xx_pwm_fan_probe(struct platform_device *pdev)
 	if (!data)
 		return -ENOMEM;
 
+	data->info = device_get_match_data(dev);
+	if (!data->info)
+		return -EINVAL;
+
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwm");
 	if (!res) {
 		dev_err(dev, "pwm resource not found\n");
@@ -1015,7 +1036,8 @@  static int npcm7xx_pwm_fan_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id of_pwm_fan_match_table[] = {
-	{ .compatible = "nuvoton,npcm750-pwm-fan", },
+	{ .compatible = "nuvoton,npcm750-pwm-fan", .data = &npxm7xx_hwmon_info},
+	{ .compatible = "nuvoton,npcm845-pwm-fan", .data = &npxm8xx_hwmon_info},
 	{},
 };
 MODULE_DEVICE_TABLE(of, of_pwm_fan_match_table);