Commit f9f7bb3a authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (core) Add basic pwm attribute support to new API 



Add basic pwm attribute support (no auto attributes) to new API.

Reviewed-by: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent bf7153fd

Documentation/hwmon/hwmon-kernel-api.txt

+2 −0
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ It contains following fields: 
  * hwmon_energy	Energy sensor

  * hwmon_humidity	Humidity sensor

  * hwmon_fan		Fan speed sensor

  * hwmon_pwm		PWM control



* config: Pointer to a 0-terminated list of configuration values for each

  sensor of the given type. Each value is a combination of bit values
@@ -230,6 +231,7 @@ HWMON_P_xxxx Power attributes, for use with hwmon_power. 
HWMON_E_xxxx	Energy attributes, for use with hwmon_energy.

HWMON_H_xxxx	Humidity attributes, for use with hwmon_humidity.

HWMON_F_xxxx	Fan speed attributes, for use with hwmon_fan.

HWMON_PWM_xxxx	PWM control attributes, for use with hwmon_pwm.



Driver callback functions

-------------------------

drivers/hwmon/hwmon.c

+9 −0
Original line number Diff line number Diff line
@@ -386,6 +386,13 @@ static const char * const hwmon_fan_attr_templates[] = { 
	[hwmon_fan_fault] = "fan%d_fault",

};



static const char * const hwmon_pwm_attr_templates[] = {

	[hwmon_pwm_input] = "pwm%d",

	[hwmon_pwm_enable] = "pwm%d_enable",

	[hwmon_pwm_mode] = "pwm%d_mode",

	[hwmon_pwm_freq] = "pwm%d_freq",

};



static const char * const *__templates[] = {

	[hwmon_chip] = hwmon_chip_attr_templates,

	[hwmon_temp] = hwmon_temp_attr_templates,
@@ -395,6 +402,7 @@ static const char * const *__templates[] = { 
	[hwmon_energy] = hwmon_energy_attr_templates,

	[hwmon_humidity] = hwmon_humidity_attr_templates,

	[hwmon_fan] = hwmon_fan_attr_templates,

	[hwmon_pwm] = hwmon_pwm_attr_templates,

};



static const int __templates_size[] = {
@@ -406,6 +414,7 @@ static const int __templates_size[] = { 
	[hwmon_energy] = ARRAY_SIZE(hwmon_energy_attr_templates),

	[hwmon_humidity] = ARRAY_SIZE(hwmon_humidity_attr_templates),

	[hwmon_fan] = ARRAY_SIZE(hwmon_fan_attr_templates),

	[hwmon_pwm] = ARRAY_SIZE(hwmon_pwm_attr_templates),

};



static int hwmon_num_channel_attrs(const struct hwmon_channel_info *info)

include/linux/hwmon.h

+13 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ enum hwmon_sensor_types { 
	hwmon_energy,

	hwmon_humidity,

	hwmon_fan,

	hwmon_pwm,

};



enum hwmon_chip_attributes {
@@ -272,6 +273,18 @@ enum hwmon_fan_attributes { 
#define HWMON_F_MAX_ALARM		BIT(hwmon_fan_max_alarm)

#define HWMON_F_FAULT			BIT(hwmon_fan_fault)



enum hwmon_pwm_attributes {

	hwmon_pwm_input,

	hwmon_pwm_enable,

	hwmon_pwm_mode,

	hwmon_pwm_freq,

};



#define HWMON_PWM_INPUT			BIT(hwmon_pwm_input)

#define HWMON_PWM_ENABLE		BIT(hwmon_pwm_enable)

#define HWMON_PWM_MODE			BIT(hwmon_pwm_mode)

#define HWMON_PWM_FREQ			BIT(hwmon_pwm_freq)



/**

 * struct hwmon_ops - hwmon device operations

 * @is_visible: Callback to return attribute visibility. Mandatory.