1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2012-2019 NVIDIA Corporation.  All rights reserved.
20 	mv = DIV_ROUND_CLOSEST(cvb->c2 * speedo, s_scale);  in get_cvb_voltage()
21 	mv = DIV_ROUND_CLOSEST((mv + cvb->c1) * speedo, s_scale) + cvb->c0;  in get_cvb_voltage()
28 	/* combined: apply voltage scale and round to cvb alignment step */  in round_cvb_voltage()
30 	int step = (align->step_uv ? : 1000) * v_scale;  in round_cvb_voltage()  local
31 	int offset = align->offset_uv * v_scale;  in round_cvb_voltage()
33 	uv = max(mv * 1000, offset) - offset;  in round_cvb_voltage()
34 	uv = DIV_ROUND_UP(uv, step) * align->step_uv + align->offset_uv;  in round_cvb_voltage()
40 	UP  enumerator
43 static int round_voltage(int mv, const struct rail_alignment *align, int up)  in round_voltage()  argument
45 	if (align->step_uv) {  in round_voltage()
48 		uv = max(mv * 1000, align->offset_uv) - align->offset_uv;  in round_voltage()
49 		uv = (uv + (up ? align->step_uv - 1 : 0)) / align->step_uv;  in round_voltage()
50 		return (uv * align->step_uv + align->offset_uv) / 1000;  in round_voltage()
61 	min_mv = round_voltage(table->min_millivolts, align, UP);  in build_opp_table()
62 	max_mv = round_voltage(table->max_millivolts, align, DOWN);  in build_opp_table()
65 		const struct cvb_table_freq_entry *entry = &table->entries[i];  in build_opp_table()
67 		if (!entry->freq || (entry->freq > max_freq))  in build_opp_table()
70 		dfll_mv = get_cvb_voltage(speedo_value, table->speedo_scale,  in build_opp_table()
71 					  &entry->coefficients);  in build_opp_table()
72 		dfll_mv = round_cvb_voltage(dfll_mv, table->voltage_scale,  in build_opp_table()
76 		ret = dev_pm_opp_add(dev, entry->freq, dfll_mv * 1000);  in build_opp_table()
85  * tegra_cvb_add_opp_table - build OPP table from Tegra CVB tables
89  * @align: parameters of the regulator step and offset
97  * function calculates the optimal voltage-frequency operating points
114 		if (table->speedo_id != -1 && table->speedo_id != speedo_id)  in tegra_cvb_add_opp_table()
117 		if (table->process_id != -1 && table->process_id != process_id)  in tegra_cvb_add_opp_table()
125 	return ERR_PTR(-EINVAL);  in tegra_cvb_add_opp_table()
135 		const struct cvb_table_freq_entry *entry = &table->entries[i];  in tegra_cvb_remove_opp_table()
137 		if (!entry->freq || (entry->freq > max_freq))  in tegra_cvb_remove_opp_table()
140 		dev_pm_opp_remove(dev, entry->freq);  in tegra_cvb_remove_opp_table()