138  * @sudat_min: Min data setup time (ns)
157  * struct stm32_i2c_setup - private I2C timing setup parameters
179  * @scldel: Data setup time
196 	struct stm32_i2c_setup *setup;  member
486 static int stm32_i2c_compute_solutions(struct stm32_i2c_setup *setup,  in stm32_i2c_compute_solutions()  argument
492 				       setup->clock_src);  in stm32_i2c_compute_solutions()
498 	af_delay_min = setup->analog_filter ?  in stm32_i2c_compute_solutions()
500 	af_delay_max = setup->analog_filter ?  in stm32_i2c_compute_solutions()
503 	sdadel_min = i2c_specs[setup->speed].hddat_min + setup->fall_time -  in stm32_i2c_compute_solutions()
504 		     af_delay_min - (setup->dnf + 3) * i2cclk;  in stm32_i2c_compute_solutions()
506 	sdadel_max = i2c_specs[setup->speed].vddat_max - setup->rise_time -  in stm32_i2c_compute_solutions()
507 		     af_delay_max - (setup->dnf + 4) * i2cclk;  in stm32_i2c_compute_solutions()
509 	scldel_min = setup->rise_time + i2c_specs[setup->speed].sudat_min;  in stm32_i2c_compute_solutions()
560 static int stm32_i2c_choose_solution(struct stm32_i2c_setup *setup,  in stm32_i2c_choose_solution()  argument
566 				       setup->speed_freq);  in stm32_i2c_choose_solution()
569 				       setup->clock_src);  in stm32_i2c_choose_solution()
578 	af_delay_min = setup->analog_filter ?  in stm32_i2c_choose_solution()
580 	dnf_delay = setup->dnf * i2cclk;  in stm32_i2c_choose_solution()
583 	clk_max = STM32_NSEC_PER_SEC / i2c_specs[setup->speed].rate_min;  in stm32_i2c_choose_solution()
584 	clk_min = STM32_NSEC_PER_SEC / i2c_specs[setup->speed].rate_max;  in stm32_i2c_choose_solution()
602 			if ((tscl_l < i2c_specs[setup->speed].l_min) ||  in stm32_i2c_choose_solution()
611 					   setup->rise_time + setup->fall_time;  in stm32_i2c_choose_solution()
614 				    (tscl_h >= i2c_specs[setup->speed].h_min) &&  in stm32_i2c_choose_solution()
644 				    struct stm32_i2c_setup *setup,  in stm32_i2c_compute_timing()  argument
651 	if (setup->speed >= STM32_I2C_SPEED_END) {  in stm32_i2c_compute_timing()
653 		       setup->speed, STM32_I2C_SPEED_END - 1);  in stm32_i2c_compute_timing()
657 	if ((setup->rise_time > i2c_specs[setup->speed].rise_max) ||  in stm32_i2c_compute_timing()
658 	    (setup->fall_time > i2c_specs[setup->speed].fall_max)) {  in stm32_i2c_compute_timing()
661 		       setup->rise_time, i2c_specs[setup->speed].rise_max,  in stm32_i2c_compute_timing()
662 		       setup->fall_time, i2c_specs[setup->speed].fall_max);  in stm32_i2c_compute_timing()
666 	if (setup->dnf > STM32_I2C_DNF_MAX) {  in stm32_i2c_compute_timing()
668 		       setup->dnf, STM32_I2C_DNF_MAX);  in stm32_i2c_compute_timing()
672 	if (setup->speed_freq > i2c_specs[setup->speed].rate) {  in stm32_i2c_compute_timing()
674 		       setup->speed_freq, i2c_specs[setup->speed].rate);  in stm32_i2c_compute_timing()
679 	ret = stm32_i2c_compute_solutions(setup, &solutions);  in stm32_i2c_compute_timing()
683 	ret = stm32_i2c_choose_solution(setup, &solutions, output);  in stm32_i2c_compute_timing()
705 	struct stm32_i2c_setup *setup = i2c_priv->setup;  in stm32_i2c_setup_timing()  local
708 	setup->speed = i2c_priv->speed;  in stm32_i2c_setup_timing()
709 	setup->speed_freq = i2c_specs[setup->speed].rate;  in stm32_i2c_setup_timing()
710 	setup->clock_src = clk_get_rate(&i2c_priv->clk);  in stm32_i2c_setup_timing()
712 	if (!setup->clock_src) {  in stm32_i2c_setup_timing()
718 		ret = stm32_i2c_compute_timing(i2c_priv, setup, timing);  in stm32_i2c_setup_timing()
724 				setup->speed = i2c_priv->speed;  in stm32_i2c_setup_timing()
725 				setup->speed_freq =  in stm32_i2c_setup_timing()
726 					i2c_specs[setup->speed].rate;  in stm32_i2c_setup_timing()
728 				      __func__, i2c_specs[setup->speed].rate);  in stm32_i2c_setup_timing()
741 	      setup->speed, setup->speed_freq, setup->clock_src);  in stm32_i2c_setup_timing()
743 	      setup->rise_time, setup->fall_time);  in stm32_i2c_setup_timing()
745 	      setup->analog_filter ? "On" : "Off", setup->dnf);  in stm32_i2c_setup_timing()
773 	if (i2c_priv->setup->analog_filter)  in stm32_i2c_hw_config()
848 	i2c_priv->setup = (struct stm32_i2c_setup *)dev_get_driver_data(dev);  in stm32_ofdata_to_platdata()
849 	if (!i2c_priv->setup)  in stm32_ofdata_to_platdata()
854 		i2c_priv->setup->rise_time = rise_time;  in stm32_ofdata_to_platdata()
858 		i2c_priv->setup->fall_time = fall_time;  in stm32_ofdata_to_platdata()