STRUCT PWM_OPS(9)                  Pulse-Width Modulation (PWM)                 STRUCT PWM_OPS(9)



NAME
       struct_pwm_ops - PWM controller operations

SYNOPSIS
       struct pwm_ops {
         int (* request) (struct pwm_chip *chip, struct pwm_device *pwm);
         void (* free) (struct pwm_chip *chip, struct pwm_device *pwm);
         int (* config) (struct pwm_chip *chip, struct pwm_device *pwm,int duty_ns, int period_ns);
         int (* set_polarity) (struct pwm_chip *chip, struct pwm_device *pwm,enum pwm_polarity polarity);
         int (* capture) (struct pwm_chip *chip, struct pwm_device *pwm,struct pwm_capture *result, unsigned long timeout);
         int (* enable) (struct pwm_chip *chip, struct pwm_device *pwm);
         void (* disable) (struct pwm_chip *chip, struct pwm_device *pwm);
         int (* apply) (struct pwm_chip *chip, struct pwm_device *pwm,struct pwm_state *state);
         void (* get_state) (struct pwm_chip *chip, struct pwm_device *pwm,struct pwm_state *state);
       #ifdef CONFIG_DEBUG_FS
         void (* dbg_show) (struct pwm_chip *chip, struct seq_file *s);
       #endif
         struct module * owner;
       };

MEMBERS
       request
           optional hook for requesting a PWM

       free
           optional hook for freeing a PWM

       config
           configure duty cycles and period length for this PWM

       set_polarity
           configure the polarity of this PWM

       capture
           capture and report PWM signal

       enable
           enable PWM output toggling

       disable
           disable PWM output toggling

       apply
           atomically apply a new PWM config. The state argument should be adjusted with the real
           hardware config (if the approximate the period or duty_cycle value, state should
           reflect it)

       get_state
           get the current PWM state. This function is only called once per PWM device when the
           PWM chip is registered.

       dbg_show
           optional routine to show contents in debugfs

       owner
           helps prevent removal of modules exporting active PWMs

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                         STRUCT PWM_OPS(9)