PWM_INIT_STATE(9)                  Pulse-Width Modulation (PWM)                 PWM_INIT_STATE(9)



NAME
       pwm_init_state - prepare a new state to be applied with pwm_apply_state

SYNOPSIS
       void pwm_init_state(const struct pwm_device * pwm, struct pwm_state * state);

ARGUMENTS
       pwm
           PWM device

       state
           state to fill with the prepared PWM state

DESCRIPTION
       This functions prepares a state that can later be tweaked and applied to the PWM device
       with pwm_apply_state. This is a convenient function that first retrieves the current PWM
       state and the replaces the period and polarity fields with the reference values defined in
       pwm->args. Once the function returns, you can adjust the ->enabled and ->duty_cycle fields
       according to your needs before calling pwm_apply_state.

       ->duty_cycle is initially set to zero to avoid cases where the current ->duty_cycle value
       exceed the pwm_args->period one, which would trigger an error if the user calls
       pwm_apply_state without adjusting ->duty_cycle first.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                         PWM_INIT_STATE(9)