static int sun4i_pwm_calculate(struct sun4i_pwm_chip *sun4i_pwm,
			       const struct pwm_state *state,
			       u32 *dty, u32 *prd, unsigned int *prsclr,
			       bool *bypass)
static int sun4i_pwm_calculate(struct sun4i_pwm_chip *sun4ichip,
			       const struct pwm_state *state,
			       u32 *dty, u32 *prd, unsigned int *prsclr,
			       bool *bypass)