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

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

Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2016-06-26 12:20:46 -07:00
parent bf7153fd2c
commit f9f7bb3a0e
3 changed files with 24 additions and 0 deletions
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2
Documentation/hwmon/hwmon-kernel-api.txt
View File

@ -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
-------------------------

9
drivers/hwmon/hwmon.c
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@ -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)

13
include/linux/hwmon.h
View File

@ -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.