158 	unsigned int prescale;  in ingenic_tcu_recalc_rate()  local
161 	ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &prescale);  in ingenic_tcu_recalc_rate()
164 	prescale = (prescale & TCU_TCSR_PRESCALE_MASK) >> TCU_TCSR_PRESCALE_LSB;  in ingenic_tcu_recalc_rate()
166 	return parent_rate >> (prescale * 2);  in ingenic_tcu_recalc_rate()
171 	u8 prescale;  in ingenic_tcu_get_prescale()  local
173 	for (prescale = 0; prescale < 5; prescale++)  in ingenic_tcu_get_prescale()
174 		if ((rate >> (prescale * 2)) <= req_rate)  in ingenic_tcu_get_prescale()
175 			return prescale;  in ingenic_tcu_get_prescale()
184 	u8 prescale;  in ingenic_tcu_round_rate()  local
189 	prescale = ingenic_tcu_get_prescale(rate, req_rate);  in ingenic_tcu_round_rate()
191 	return rate >> (prescale * 2);  in ingenic_tcu_round_rate()
199 	u8 prescale = ingenic_tcu_get_prescale(parent_rate, req_rate);  in ingenic_tcu_set_rate()  local
207 				 prescale << TCU_TCSR_PRESCALE_LSB);  in ingenic_tcu_set_rate()