629 static unsigned long round_to_extif_ticks(unsigned long ps, int div)  in round_to_extif_ticks()  argument
631 	int bus_tick = hwa742.extif_clk_period * div;  in round_to_extif_ticks()
635 static int calc_reg_timing(unsigned long sysclk, int div)  in calc_reg_timing()  argument
650 		  "extif_clk_div %d\n", systim, hwa742.extif_clk_period, div);  in calc_reg_timing()
654 	t->clk_div = div;  in calc_reg_timing()
656 	t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);  in calc_reg_timing()
657 	t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);  in calc_reg_timing()
658 	t->access_time = round_to_extif_ticks(t->re_on_time + 12200, div);  in calc_reg_timing()
659 	t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);  in calc_reg_timing()
660 	t->re_off_time = round_to_extif_ticks(t->re_on_time + 16000, div);  in calc_reg_timing()
661 	t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);  in calc_reg_timing()
662 	t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);  in calc_reg_timing()
665 	t->re_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);  in calc_reg_timing()
681 static int calc_lut_timing(unsigned long sysclk, int div)  in calc_lut_timing()  argument
697 		  "extif_clk_div %d\n", systim, hwa742.extif_clk_period, div);  in calc_lut_timing()
702 	t->clk_div = div;  in calc_lut_timing()
705 	t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);  in calc_lut_timing()
706 	t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);  in calc_lut_timing()
708 					      26000, div);  in calc_lut_timing()
709 	t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);  in calc_lut_timing()
711 					      26000, div);  in calc_lut_timing()
712 	t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);  in calc_lut_timing()
713 	t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);  in calc_lut_timing()
716 	t->re_cycle_time = round_to_extif_ticks(2000 + 4 * systim + 26000, div);  in calc_lut_timing()
735 	int div;  in calc_extif_timings()  local
738 	for (div = 1; div < max_clk_div; div++) {  in calc_extif_timings()
739 		if (calc_reg_timing(sysclk, div) == 0)  in calc_extif_timings()
742 	if (div >= max_clk_div)  in calc_extif_timings()
745 	*extif_mem_div = div;  in calc_extif_timings()
747 	for (div = 1; div < max_clk_div; div++) {  in calc_extif_timings()
748 		if (calc_lut_timing(sysclk, div) == 0)  in calc_extif_timings()
752 	if (div >= max_clk_div)  in calc_extif_timings()