120 	u8 prescale;  in rzg2l_gpt_calculate_prescale()  local
124 		prescale = 5;  in rzg2l_gpt_calculate_prescale()
126 		prescale = (fls(prescaled_period_ticks) + 1) / 2;  in rzg2l_gpt_calculate_prescale()
128 	return prescale;  in rzg2l_gpt_calculate_prescale()
201 					      u32 val, u8 prescale)  in rzg2l_gpt_calculate_period_or_duty()  argument
206 	 * The calculation doesn't overflow an u64 because prescale ≤ 5 and so  in rzg2l_gpt_calculate_period_or_duty()
207 	 * tmp = val << (2 * prescale) * USEC_PER_SEC  in rzg2l_gpt_calculate_period_or_duty()
212 	tmp = (u64)val << (2 * prescale);  in rzg2l_gpt_calculate_period_or_duty()
227 		u8 prescale;  in rzg2l_gpt_get_state()  local
231 		prescale = FIELD_GET(RZG2L_GTCR_TPCS, val);  in rzg2l_gpt_get_state()
234 		state->period = rzg2l_gpt_calculate_period_or_duty(rzg2l_gpt, val, prescale);  in rzg2l_gpt_get_state()
237 		state->duty_cycle = rzg2l_gpt_calculate_period_or_duty(rzg2l_gpt, val, prescale);  in rzg2l_gpt_get_state()
247 static u32 rzg2l_gpt_calculate_pv_or_dc(u64 period_or_duty_cycle, u8 prescale)  in rzg2l_gpt_calculate_pv_or_dc()  argument
249 	return min_t(u64, DIV_ROUND_DOWN_ULL(period_or_duty_cycle, 1 << (2 * prescale)),  in rzg2l_gpt_calculate_pv_or_dc()
262 	u8 prescale;  in rzg2l_gpt_config()  local
270 	 * prescale and period can NOT be modified when there are multiple IOs  in rzg2l_gpt_config()
280 	prescale = rzg2l_gpt_calculate_prescale(rzg2l_gpt, period_ticks);  in rzg2l_gpt_config()
281 	pv = rzg2l_gpt_calculate_pv_or_dc(period_ticks, prescale);  in rzg2l_gpt_config()
286 	dc = rzg2l_gpt_calculate_pv_or_dc(duty_ticks, prescale);  in rzg2l_gpt_config()
313 				 FIELD_PREP(RZG2L_GTCR_TPCS, prescale));  in rzg2l_gpt_config()