1 /*
2  * Copyright 2017 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 
26 #include "dm_services.h"
27 #include "dcn_calc_auto.h"
28 #include "dcn_calc_math.h"
29 
30 /*
31  * NOTE:
32  *   This file is gcc-parseable HW gospel, coming straight from HW engineers.
33  *
34  * It doesn't adhere to Linux kernel style and sometimes will do things in odd
35  * ways. Unless there is something clearly wrong with it the code should
36  * remain as-is as it provides us with a guarantee from HW that it is correct.
37  */
38 
39 /*REVISION#250*/
scaler_settings_calculation(struct dcn_bw_internal_vars * v)40 void scaler_settings_calculation(struct dcn_bw_internal_vars *v)
41 {
42 	int k;
43 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
44 		if (v->allow_different_hratio_vratio == dcn_bw_yes) {
45 			if (v->source_scan[k] == dcn_bw_hor) {
46 				v->h_ratio[k] = v->viewport_width[k] / v->scaler_rec_out_width[k];
47 				v->v_ratio[k] = v->viewport_height[k] / v->scaler_recout_height[k];
48 			}
49 			else {
50 				v->h_ratio[k] = v->viewport_height[k] / v->scaler_rec_out_width[k];
51 				v->v_ratio[k] = v->viewport_width[k] / v->scaler_recout_height[k];
52 			}
53 		}
54 		else {
55 			if (v->source_scan[k] == dcn_bw_hor) {
56 				v->h_ratio[k] =dcn_bw_max2(v->viewport_width[k] / v->scaler_rec_out_width[k], v->viewport_height[k] / v->scaler_recout_height[k]);
57 			}
58 			else {
59 				v->h_ratio[k] =dcn_bw_max2(v->viewport_height[k] / v->scaler_rec_out_width[k], v->viewport_width[k] / v->scaler_recout_height[k]);
60 			}
61 			v->v_ratio[k] = v->h_ratio[k];
62 		}
63 		if (v->interlace_output[k] == 1.0) {
64 			v->v_ratio[k] = 2.0 * v->v_ratio[k];
65 		}
66 		if (v->underscan_output[k] == 1.0) {
67 			v->h_ratio[k] = v->h_ratio[k] * v->under_scan_factor;
68 			v->v_ratio[k] = v->v_ratio[k] * v->under_scan_factor;
69 		}
70 	}
71 	/*scaler taps calculation*/
72 
73 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
74 		if (v->h_ratio[k] > 1.0) {
75 			v->acceptable_quality_hta_ps =dcn_bw_min2(v->max_hscl_taps, 2.0 *dcn_bw_ceil2(v->h_ratio[k], 1.0));
76 		}
77 		else if (v->h_ratio[k] < 1.0) {
78 			v->acceptable_quality_hta_ps = 4.0;
79 		}
80 		else {
81 			v->acceptable_quality_hta_ps = 1.0;
82 		}
83 		if (v->ta_pscalculation == dcn_bw_override) {
84 			v->htaps[k] = v->override_hta_ps[k];
85 		}
86 		else {
87 			v->htaps[k] = v->acceptable_quality_hta_ps;
88 		}
89 		if (v->v_ratio[k] > 1.0) {
90 			v->acceptable_quality_vta_ps =dcn_bw_min2(v->max_vscl_taps, 2.0 *dcn_bw_ceil2(v->v_ratio[k], 1.0));
91 		}
92 		else if (v->v_ratio[k] < 1.0) {
93 			v->acceptable_quality_vta_ps = 4.0;
94 		}
95 		else {
96 			v->acceptable_quality_vta_ps = 1.0;
97 		}
98 		if (v->ta_pscalculation == dcn_bw_override) {
99 			v->vtaps[k] = v->override_vta_ps[k];
100 		}
101 		else {
102 			v->vtaps[k] = v->acceptable_quality_vta_ps;
103 		}
104 		if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16) {
105 			v->vta_pschroma[k] = 0.0;
106 			v->hta_pschroma[k] = 0.0;
107 		}
108 		else {
109 			if (v->ta_pscalculation == dcn_bw_override) {
110 				v->vta_pschroma[k] = v->override_vta_pschroma[k];
111 				v->hta_pschroma[k] = v->override_hta_pschroma[k];
112 			}
113 			else {
114 				v->vta_pschroma[k] = v->acceptable_quality_vta_ps;
115 				v->hta_pschroma[k] = v->acceptable_quality_hta_ps;
116 			}
117 		}
118 	}
119 }
120 
mode_support_and_system_configuration(struct dcn_bw_internal_vars * v)121 void mode_support_and_system_configuration(struct dcn_bw_internal_vars *v)
122 {
123 	int i;
124 	int j;
125 	int k;
126 	/*mode support, voltage state and soc configuration*/
127 
128 	/*scale ratio support check*/
129 
130 	v->scale_ratio_support = dcn_bw_yes;
131 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
132 		if (v->h_ratio[k] > v->max_hscl_ratio || v->v_ratio[k] > v->max_vscl_ratio || v->h_ratio[k] > v->htaps[k] || v->v_ratio[k] > v->vtaps[k] || (v->source_pixel_format[k] != dcn_bw_rgb_sub_64 && v->source_pixel_format[k] != dcn_bw_rgb_sub_32 && v->source_pixel_format[k] != dcn_bw_rgb_sub_16 && (v->h_ratio[k] / 2.0 > v->hta_pschroma[k] || v->v_ratio[k] / 2.0 > v->vta_pschroma[k]))) {
133 			v->scale_ratio_support = dcn_bw_no;
134 		}
135 	}
136 	/*source format, pixel format and scan support check*/
137 
138 	v->source_format_pixel_and_scan_support = dcn_bw_yes;
139 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
140 		if ((v->source_surface_mode[k] == dcn_bw_sw_linear && v->source_scan[k] != dcn_bw_hor) || ((v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x || v->source_surface_mode[k] == dcn_bw_sw_var_d || v->source_surface_mode[k] == dcn_bw_sw_var_d_x) && v->source_pixel_format[k] != dcn_bw_rgb_sub_64)) {
141 			v->source_format_pixel_and_scan_support = dcn_bw_no;
142 		}
143 	}
144 	/*bandwidth support check*/
145 
146 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
147 		if (v->source_scan[k] == dcn_bw_hor) {
148 			v->swath_width_ysingle_dpp[k] = v->viewport_width[k];
149 		}
150 		else {
151 			v->swath_width_ysingle_dpp[k] = v->viewport_height[k];
152 		}
153 		if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
154 			v->byte_per_pixel_in_dety[k] = 8.0;
155 			v->byte_per_pixel_in_detc[k] = 0.0;
156 		}
157 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_32) {
158 			v->byte_per_pixel_in_dety[k] = 4.0;
159 			v->byte_per_pixel_in_detc[k] = 0.0;
160 		}
161 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_16) {
162 			v->byte_per_pixel_in_dety[k] = 2.0;
163 			v->byte_per_pixel_in_detc[k] = 0.0;
164 		}
165 		else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
166 			v->byte_per_pixel_in_dety[k] = 1.0;
167 			v->byte_per_pixel_in_detc[k] = 2.0;
168 		}
169 		else {
170 			v->byte_per_pixel_in_dety[k] = 4.0f / 3.0f;
171 			v->byte_per_pixel_in_detc[k] = 8.0f / 3.0f;
172 		}
173 	}
174 	v->total_read_bandwidth_consumed_gbyte_per_second = 0.0;
175 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
176 		v->read_bandwidth[k] = v->swath_width_ysingle_dpp[k] * (dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) * v->v_ratio[k] +dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 2.0 * v->v_ratio[k] / 2) / (v->htotal[k] / v->pixel_clock[k]);
177 		if (v->dcc_enable[k] == dcn_bw_yes) {
178 			v->read_bandwidth[k] = v->read_bandwidth[k] * (1 + 1 / 256);
179 		}
180 		if (v->pte_enable == dcn_bw_yes && v->source_scan[k] != dcn_bw_hor && (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x)) {
181 			v->read_bandwidth[k] = v->read_bandwidth[k] * (1 + 1 / 64);
182 		}
183 		else if (v->pte_enable == dcn_bw_yes && v->source_scan[k] == dcn_bw_hor && (v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32) && (v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x)) {
184 			v->read_bandwidth[k] = v->read_bandwidth[k] * (1 + 1 / 256);
185 		}
186 		else if (v->pte_enable == dcn_bw_yes) {
187 			v->read_bandwidth[k] = v->read_bandwidth[k] * (1 + 1 / 512);
188 		}
189 		v->total_read_bandwidth_consumed_gbyte_per_second = v->total_read_bandwidth_consumed_gbyte_per_second + v->read_bandwidth[k] / 1000.0;
190 	}
191 	v->total_write_bandwidth_consumed_gbyte_per_second = 0.0;
192 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
193 		if (v->output[k] == dcn_bw_writeback && v->output_format[k] == dcn_bw_444) {
194 			v->write_bandwidth[k] = v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 4.0;
195 		}
196 		else if (v->output[k] == dcn_bw_writeback) {
197 			v->write_bandwidth[k] = v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 1.5;
198 		}
199 		else {
200 			v->write_bandwidth[k] = 0.0;
201 		}
202 		v->total_write_bandwidth_consumed_gbyte_per_second = v->total_write_bandwidth_consumed_gbyte_per_second + v->write_bandwidth[k] / 1000.0;
203 	}
204 	v->total_bandwidth_consumed_gbyte_per_second = v->total_read_bandwidth_consumed_gbyte_per_second + v->total_write_bandwidth_consumed_gbyte_per_second;
205 	v->dcc_enabled_in_any_plane = dcn_bw_no;
206 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
207 		if (v->dcc_enable[k] == dcn_bw_yes) {
208 			v->dcc_enabled_in_any_plane = dcn_bw_yes;
209 		}
210 	}
211 	for (i = 0; i <= number_of_states_plus_one; i++) {
212 		v->return_bw_todcn_per_state =dcn_bw_min2(v->return_bus_width * v->dcfclk_per_state[i], v->fabric_and_dram_bandwidth_per_state[i] * 1000.0 * v->percent_of_ideal_drambw_received_after_urg_latency / 100.0);
213 		v->return_bw_per_state[i] = v->return_bw_todcn_per_state;
214 		if (v->dcc_enabled_in_any_plane == dcn_bw_yes && v->return_bw_todcn_per_state > v->dcfclk_per_state[i] * v->return_bus_width / 4.0) {
215 			v->return_bw_per_state[i] =dcn_bw_min2(v->return_bw_per_state[i], v->return_bw_todcn_per_state * 4.0 * (1.0 - v->urgent_latency / ((v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 / (v->return_bw_todcn_per_state - v->dcfclk_per_state[i] * v->return_bus_width / 4.0) + v->urgent_latency)));
216 		}
217 		v->critical_point = 2.0 * v->return_bus_width * v->dcfclk_per_state[i] * v->urgent_latency / (v->return_bw_todcn_per_state * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0);
218 		if (v->dcc_enabled_in_any_plane == dcn_bw_yes && v->critical_point > 1.0 && v->critical_point < 4.0) {
219 			v->return_bw_per_state[i] =dcn_bw_min2(v->return_bw_per_state[i], dcn_bw_pow(4.0 * v->return_bw_todcn_per_state * (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 * v->return_bus_width * v->dcfclk_per_state[i] * v->urgent_latency / (v->return_bw_todcn_per_state * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0), 2));
220 		}
221 		v->return_bw_todcn_per_state =dcn_bw_min2(v->return_bus_width * v->dcfclk_per_state[i], v->fabric_and_dram_bandwidth_per_state[i] * 1000.0);
222 		if (v->dcc_enabled_in_any_plane == dcn_bw_yes && v->return_bw_todcn_per_state > v->dcfclk_per_state[i] * v->return_bus_width / 4.0) {
223 			v->return_bw_per_state[i] =dcn_bw_min2(v->return_bw_per_state[i], v->return_bw_todcn_per_state * 4.0 * (1.0 - v->urgent_latency / ((v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 / (v->return_bw_todcn_per_state - v->dcfclk_per_state[i] * v->return_bus_width / 4.0) + v->urgent_latency)));
224 		}
225 		v->critical_point = 2.0 * v->return_bus_width * v->dcfclk_per_state[i] * v->urgent_latency / (v->return_bw_todcn_per_state * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0);
226 		if (v->dcc_enabled_in_any_plane == dcn_bw_yes && v->critical_point > 1.0 && v->critical_point < 4.0) {
227 			v->return_bw_per_state[i] =dcn_bw_min2(v->return_bw_per_state[i], dcn_bw_pow(4.0 * v->return_bw_todcn_per_state * (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 * v->return_bus_width * v->dcfclk_per_state[i] * v->urgent_latency / (v->return_bw_todcn_per_state * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0), 2));
228 		}
229 	}
230 	for (i = 0; i <= number_of_states_plus_one; i++) {
231 		if ((v->total_read_bandwidth_consumed_gbyte_per_second * 1000.0 <= v->return_bw_per_state[i]) && (v->total_bandwidth_consumed_gbyte_per_second * 1000.0 <= v->fabric_and_dram_bandwidth_per_state[i] * 1000.0 * v->percent_of_ideal_drambw_received_after_urg_latency / 100.0)) {
232 			v->bandwidth_support[i] = dcn_bw_yes;
233 		}
234 		else {
235 			v->bandwidth_support[i] = dcn_bw_no;
236 		}
237 	}
238 	/*writeback latency support check*/
239 
240 	v->writeback_latency_support = dcn_bw_yes;
241 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
242 		if (v->output[k] == dcn_bw_writeback && v->output_format[k] == dcn_bw_444 && v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 4.0 > (v->writeback_luma_buffer_size + v->writeback_chroma_buffer_size) * 1024.0 / v->write_back_latency) {
243 			v->writeback_latency_support = dcn_bw_no;
244 		}
245 		else if (v->output[k] == dcn_bw_writeback && v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) >dcn_bw_min2(v->writeback_luma_buffer_size, 2.0 * v->writeback_chroma_buffer_size) * 1024.0 / v->write_back_latency) {
246 			v->writeback_latency_support = dcn_bw_no;
247 		}
248 	}
249 	/*re-ordering buffer support check*/
250 
251 	for (i = 0; i <= number_of_states_plus_one; i++) {
252 		v->urgent_round_trip_and_out_of_order_latency_per_state[i] = (v->round_trip_ping_latency_cycles + 32.0) / v->dcfclk_per_state[i] + v->urgent_out_of_order_return_per_channel * v->number_of_channels / v->return_bw_per_state[i];
253 		if ((v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 / v->return_bw_per_state[i] > v->urgent_round_trip_and_out_of_order_latency_per_state[i]) {
254 			v->rob_support[i] = dcn_bw_yes;
255 		}
256 		else {
257 			v->rob_support[i] = dcn_bw_no;
258 		}
259 	}
260 	/*display io support check*/
261 
262 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
263 		if (v->output[k] == dcn_bw_dp && v->dsc_capability == dcn_bw_yes) {
264 			if (v->output_format[k] == dcn_bw_420) {
265 				v->required_output_bw = v->pixel_clock[k] / 2.0;
266 			}
267 			else {
268 				v->required_output_bw = v->pixel_clock[k];
269 			}
270 		}
271 		else if (v->output_format[k] == dcn_bw_420) {
272 			v->required_output_bw = v->pixel_clock[k] * 3.0 / 2.0;
273 		}
274 		else {
275 			v->required_output_bw = v->pixel_clock[k] * 3.0;
276 		}
277 		if (v->output[k] == dcn_bw_hdmi) {
278 			v->required_phyclk[k] = v->required_output_bw;
279 			switch (v->output_deep_color[k]) {
280 			case dcn_bw_encoder_10bpc:
281 				v->required_phyclk[k] =  v->required_phyclk[k] * 5.0 / 4;
282 			break;
283 			case dcn_bw_encoder_12bpc:
284 				v->required_phyclk[k] =  v->required_phyclk[k] * 3.0 / 2;
285 				break;
286 			default:
287 				break;
288 			}
289 			v->required_phyclk[k] = v->required_phyclk[k] / 3.0;
290 		}
291 		else if (v->output[k] == dcn_bw_dp) {
292 			v->required_phyclk[k] = v->required_output_bw / 4.0;
293 		}
294 		else {
295 			v->required_phyclk[k] = 0.0;
296 		}
297 	}
298 	for (i = 0; i <= number_of_states_plus_one; i++) {
299 		v->dio_support[i] = dcn_bw_yes;
300 		for (k = 0; k <= v->number_of_active_planes - 1; k++) {
301 			if (v->required_phyclk[k] > v->phyclk_per_state[i] || (v->output[k] == dcn_bw_hdmi && v->required_phyclk[k] > 600.0)) {
302 				v->dio_support[i] = dcn_bw_no;
303 			}
304 		}
305 	}
306 	/*total available writeback support check*/
307 
308 	v->total_number_of_active_writeback = 0.0;
309 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
310 		if (v->output[k] == dcn_bw_writeback) {
311 			v->total_number_of_active_writeback = v->total_number_of_active_writeback + 1.0;
312 		}
313 	}
314 	if (v->total_number_of_active_writeback <= v->max_num_writeback) {
315 		v->total_available_writeback_support = dcn_bw_yes;
316 	}
317 	else {
318 		v->total_available_writeback_support = dcn_bw_no;
319 	}
320 	/*maximum dispclk/dppclk support check*/
321 
322 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
323 		if (v->h_ratio[k] > 1.0) {
324 			v->pscl_factor[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput * v->h_ratio[k] /dcn_bw_ceil2(v->htaps[k] / 6.0, 1.0));
325 		}
326 		else {
327 			v->pscl_factor[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput);
328 		}
329 		if (v->byte_per_pixel_in_detc[k] == 0.0) {
330 			v->pscl_factor_chroma[k] = 0.0;
331 			v->min_dppclk_using_single_dpp[k] = v->pixel_clock[k] *dcn_bw_max3(v->vtaps[k] / 6.0 *dcn_bw_min2(1.0, v->h_ratio[k]), v->h_ratio[k] * v->v_ratio[k] / v->pscl_factor[k], 1.0);
332 		}
333 		else {
334 			if (v->h_ratio[k] / 2.0 > 1.0) {
335 				v->pscl_factor_chroma[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput * v->h_ratio[k] / 2.0 /dcn_bw_ceil2(v->hta_pschroma[k] / 6.0, 1.0));
336 			}
337 			else {
338 				v->pscl_factor_chroma[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput);
339 			}
340 			v->min_dppclk_using_single_dpp[k] = v->pixel_clock[k] *dcn_bw_max5(v->vtaps[k] / 6.0 *dcn_bw_min2(1.0, v->h_ratio[k]), v->h_ratio[k] * v->v_ratio[k] / v->pscl_factor[k], v->vta_pschroma[k] / 6.0 *dcn_bw_min2(1.0, v->h_ratio[k] / 2.0), v->h_ratio[k] * v->v_ratio[k] / 4.0 / v->pscl_factor_chroma[k], 1.0);
341 		}
342 	}
343 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
344 		if ((v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16)) {
345 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
346 				v->read256_block_height_y[k] = 1.0;
347 			}
348 			else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
349 				v->read256_block_height_y[k] = 4.0;
350 			}
351 			else {
352 				v->read256_block_height_y[k] = 8.0;
353 			}
354 			v->read256_block_width_y[k] = 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / v->read256_block_height_y[k];
355 			v->read256_block_height_c[k] = 0.0;
356 			v->read256_block_width_c[k] = 0.0;
357 		}
358 		else {
359 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
360 				v->read256_block_height_y[k] = 1.0;
361 				v->read256_block_height_c[k] = 1.0;
362 			}
363 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
364 				v->read256_block_height_y[k] = 16.0;
365 				v->read256_block_height_c[k] = 8.0;
366 			}
367 			else {
368 				v->read256_block_height_y[k] = 8.0;
369 				v->read256_block_height_c[k] = 8.0;
370 			}
371 			v->read256_block_width_y[k] = 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / v->read256_block_height_y[k];
372 			v->read256_block_width_c[k] = 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / v->read256_block_height_c[k];
373 		}
374 		if (v->source_scan[k] == dcn_bw_hor) {
375 			v->max_swath_height_y[k] = v->read256_block_height_y[k];
376 			v->max_swath_height_c[k] = v->read256_block_height_c[k];
377 		}
378 		else {
379 			v->max_swath_height_y[k] = v->read256_block_width_y[k];
380 			v->max_swath_height_c[k] = v->read256_block_width_c[k];
381 		}
382 		if ((v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16)) {
383 			if (v->source_surface_mode[k] == dcn_bw_sw_linear || (v->source_pixel_format[k] == dcn_bw_rgb_sub_64 && (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_var_s || v->source_surface_mode[k] == dcn_bw_sw_var_s_x) && v->source_scan[k] == dcn_bw_hor)) {
384 				v->min_swath_height_y[k] = v->max_swath_height_y[k];
385 			}
386 			else {
387 				v->min_swath_height_y[k] = v->max_swath_height_y[k] / 2.0;
388 			}
389 			v->min_swath_height_c[k] = v->max_swath_height_c[k];
390 		}
391 		else {
392 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
393 				v->min_swath_height_y[k] = v->max_swath_height_y[k];
394 				v->min_swath_height_c[k] = v->max_swath_height_c[k];
395 			}
396 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8 && v->source_scan[k] == dcn_bw_hor) {
397 				v->min_swath_height_y[k] = v->max_swath_height_y[k] / 2.0;
398 				if (v->bug_forcing_luma_and_chroma_request_to_same_size_fixed == dcn_bw_yes) {
399 					v->min_swath_height_c[k] = v->max_swath_height_c[k];
400 				}
401 				else {
402 					v->min_swath_height_c[k] = v->max_swath_height_c[k] / 2.0;
403 				}
404 			}
405 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10 && v->source_scan[k] == dcn_bw_hor) {
406 				v->min_swath_height_c[k] = v->max_swath_height_c[k] / 2.0;
407 				if (v->bug_forcing_luma_and_chroma_request_to_same_size_fixed == dcn_bw_yes) {
408 					v->min_swath_height_y[k] = v->max_swath_height_y[k];
409 				}
410 				else {
411 					v->min_swath_height_y[k] = v->max_swath_height_y[k] / 2.0;
412 				}
413 			}
414 			else {
415 				v->min_swath_height_y[k] = v->max_swath_height_y[k];
416 				v->min_swath_height_c[k] = v->max_swath_height_c[k];
417 			}
418 		}
419 		if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
420 			v->maximum_swath_width = 8192.0;
421 		}
422 		else {
423 			v->maximum_swath_width = 5120.0;
424 		}
425 		v->number_of_dpp_required_for_det_size =dcn_bw_ceil2(v->swath_width_ysingle_dpp[k] /dcn_bw_min2(v->maximum_swath_width, v->det_buffer_size_in_kbyte * 1024.0 / 2.0 / (v->byte_per_pixel_in_dety[k] * v->min_swath_height_y[k] + v->byte_per_pixel_in_detc[k] / 2.0 * v->min_swath_height_c[k])), 1.0);
426 		if (v->byte_per_pixel_in_detc[k] == 0.0) {
427 			v->number_of_dpp_required_for_lb_size =dcn_bw_ceil2((v->vtaps[k] +dcn_bw_max2(dcn_bw_ceil2(v->v_ratio[k], 1.0) - 2, 0.0)) * v->swath_width_ysingle_dpp[k] /dcn_bw_max2(v->h_ratio[k], 1.0) * v->lb_bit_per_pixel[k] / v->line_buffer_size, 1.0);
428 		}
429 		else {
430 			v->number_of_dpp_required_for_lb_size =dcn_bw_max2(dcn_bw_ceil2((v->vtaps[k] +dcn_bw_max2(dcn_bw_ceil2(v->v_ratio[k], 1.0) - 2, 0.0)) * v->swath_width_ysingle_dpp[k] /dcn_bw_max2(v->h_ratio[k], 1.0) * v->lb_bit_per_pixel[k] / v->line_buffer_size, 1.0),dcn_bw_ceil2((v->vta_pschroma[k] +dcn_bw_max2(dcn_bw_ceil2(v->v_ratio[k] / 2.0, 1.0) - 2, 0.0)) * v->swath_width_ysingle_dpp[k] / 2.0 /dcn_bw_max2(v->h_ratio[k] / 2.0, 1.0) * v->lb_bit_per_pixel[k] / v->line_buffer_size, 1.0));
431 		}
432 		v->number_of_dpp_required_for_det_and_lb_size[k] =dcn_bw_max2(v->number_of_dpp_required_for_det_size, v->number_of_dpp_required_for_lb_size);
433 	}
434 	for (i = 0; i <= number_of_states_plus_one; i++) {
435 		for (j = 0; j <= 1; j++) {
436 			v->total_number_of_active_dpp[i][j] = 0.0;
437 			v->required_dispclk[i][j] = 0.0;
438 			v->dispclk_dppclk_support[i][j] = dcn_bw_yes;
439 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
440 				v->min_dispclk_using_single_dpp =dcn_bw_max2(v->pixel_clock[k], v->min_dppclk_using_single_dpp[k] * (j + 1)) * (1.0 + v->downspreading / 100.0);
441 				if (v->odm_capability == dcn_bw_yes) {
442 					v->min_dispclk_using_dual_dpp =dcn_bw_max2(v->pixel_clock[k] / 2.0, v->min_dppclk_using_single_dpp[k] / 2.0 * (j + 1)) * (1.0 + v->downspreading / 100.0);
443 				}
444 				else {
445 					v->min_dispclk_using_dual_dpp =dcn_bw_max2(v->pixel_clock[k], v->min_dppclk_using_single_dpp[k] / 2.0 * (j + 1)) * (1.0 + v->downspreading / 100.0);
446 				}
447 				if (i < number_of_states) {
448 					v->min_dispclk_using_single_dpp = v->min_dispclk_using_single_dpp * (1.0 + v->dispclk_ramping_margin / 100.0);
449 					v->min_dispclk_using_dual_dpp = v->min_dispclk_using_dual_dpp * (1.0 + v->dispclk_ramping_margin / 100.0);
450 				}
451 				if (v->min_dispclk_using_single_dpp <=dcn_bw_min2(v->max_dispclk[i], (j + 1) * v->max_dppclk[i]) && v->number_of_dpp_required_for_det_and_lb_size[k] <= 1.0) {
452 					v->no_of_dpp[i][j][k] = 1.0;
453 					v->required_dispclk[i][j] =dcn_bw_max2(v->required_dispclk[i][j], v->min_dispclk_using_single_dpp);
454 				}
455 				else if (v->min_dispclk_using_dual_dpp <=dcn_bw_min2(v->max_dispclk[i], (j + 1) * v->max_dppclk[i])) {
456 					v->no_of_dpp[i][j][k] = 2.0;
457 					v->required_dispclk[i][j] =dcn_bw_max2(v->required_dispclk[i][j], v->min_dispclk_using_dual_dpp);
458 				}
459 				else {
460 					v->no_of_dpp[i][j][k] = 2.0;
461 					v->required_dispclk[i][j] =dcn_bw_max2(v->required_dispclk[i][j], v->min_dispclk_using_dual_dpp);
462 					v->dispclk_dppclk_support[i][j] = dcn_bw_no;
463 				}
464 				v->total_number_of_active_dpp[i][j] = v->total_number_of_active_dpp[i][j] + v->no_of_dpp[i][j][k];
465 			}
466 			if (v->total_number_of_active_dpp[i][j] > v->max_num_dpp) {
467 				v->total_number_of_active_dpp[i][j] = 0.0;
468 				v->required_dispclk[i][j] = 0.0;
469 				v->dispclk_dppclk_support[i][j] = dcn_bw_yes;
470 				for (k = 0; k <= v->number_of_active_planes - 1; k++) {
471 					v->min_dispclk_using_single_dpp =dcn_bw_max2(v->pixel_clock[k], v->min_dppclk_using_single_dpp[k] * (j + 1)) * (1.0 + v->downspreading / 100.0);
472 					v->min_dispclk_using_dual_dpp =dcn_bw_max2(v->pixel_clock[k], v->min_dppclk_using_single_dpp[k] / 2.0 * (j + 1)) * (1.0 + v->downspreading / 100.0);
473 					if (i < number_of_states) {
474 						v->min_dispclk_using_single_dpp = v->min_dispclk_using_single_dpp * (1.0 + v->dispclk_ramping_margin / 100.0);
475 						v->min_dispclk_using_dual_dpp = v->min_dispclk_using_dual_dpp * (1.0 + v->dispclk_ramping_margin / 100.0);
476 					}
477 					if (v->number_of_dpp_required_for_det_and_lb_size[k] <= 1.0) {
478 						v->no_of_dpp[i][j][k] = 1.0;
479 						v->required_dispclk[i][j] =dcn_bw_max2(v->required_dispclk[i][j], v->min_dispclk_using_single_dpp);
480 						if (v->min_dispclk_using_single_dpp >dcn_bw_min2(v->max_dispclk[i], (j + 1) * v->max_dppclk[i])) {
481 							v->dispclk_dppclk_support[i][j] = dcn_bw_no;
482 						}
483 					}
484 					else {
485 						v->no_of_dpp[i][j][k] = 2.0;
486 						v->required_dispclk[i][j] =dcn_bw_max2(v->required_dispclk[i][j], v->min_dispclk_using_dual_dpp);
487 						if (v->min_dispclk_using_dual_dpp >dcn_bw_min2(v->max_dispclk[i], (j + 1) * v->max_dppclk[i])) {
488 							v->dispclk_dppclk_support[i][j] = dcn_bw_no;
489 						}
490 					}
491 					v->total_number_of_active_dpp[i][j] = v->total_number_of_active_dpp[i][j] + v->no_of_dpp[i][j][k];
492 				}
493 			}
494 		}
495 	}
496 	/*viewport size check*/
497 
498 	v->viewport_size_support = dcn_bw_yes;
499 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
500 		if (v->number_of_dpp_required_for_det_and_lb_size[k] > 2.0) {
501 			v->viewport_size_support = dcn_bw_no;
502 		}
503 	}
504 	/*total available pipes support check*/
505 
506 	for (i = 0; i <= number_of_states_plus_one; i++) {
507 		for (j = 0; j <= 1; j++) {
508 			if (v->total_number_of_active_dpp[i][j] <= v->max_num_dpp) {
509 				v->total_available_pipes_support[i][j] = dcn_bw_yes;
510 			}
511 			else {
512 				v->total_available_pipes_support[i][j] = dcn_bw_no;
513 			}
514 		}
515 	}
516 	/*urgent latency support check*/
517 
518 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
519 		for (i = 0; i <= number_of_states_plus_one; i++) {
520 			for (j = 0; j <= 1; j++) {
521 				v->swath_width_yper_state[i][j][k] = v->swath_width_ysingle_dpp[k] / v->no_of_dpp[i][j][k];
522 				v->swath_width_granularity_y = 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / v->max_swath_height_y[k];
523 				v->rounded_up_max_swath_size_bytes_y = (dcn_bw_ceil2(v->swath_width_yper_state[i][j][k] - 1.0, v->swath_width_granularity_y) + v->swath_width_granularity_y) * v->byte_per_pixel_in_dety[k] * v->max_swath_height_y[k];
524 				if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10) {
525 					v->rounded_up_max_swath_size_bytes_y =dcn_bw_ceil2(v->rounded_up_max_swath_size_bytes_y, 256.0) + 256;
526 				}
527 				if (v->max_swath_height_c[k] > 0.0) {
528 					v->swath_width_granularity_c = 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / v->max_swath_height_c[k];
529 					v->rounded_up_max_swath_size_bytes_c = (dcn_bw_ceil2(v->swath_width_yper_state[i][j][k] / 2.0 - 1.0, v->swath_width_granularity_c) + v->swath_width_granularity_c) * v->byte_per_pixel_in_detc[k] * v->max_swath_height_c[k];
530 					if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10) {
531 						v->rounded_up_max_swath_size_bytes_c = dcn_bw_ceil2(v->rounded_up_max_swath_size_bytes_c, 256.0) + 256;
532 					}
533 				}
534 				if (v->rounded_up_max_swath_size_bytes_y + v->rounded_up_max_swath_size_bytes_c <= v->det_buffer_size_in_kbyte * 1024.0 / 2.0) {
535 					v->swath_height_yper_state[i][j][k] = v->max_swath_height_y[k];
536 					v->swath_height_cper_state[i][j][k] = v->max_swath_height_c[k];
537 				}
538 				else {
539 					v->swath_height_yper_state[i][j][k] = v->min_swath_height_y[k];
540 					v->swath_height_cper_state[i][j][k] = v->min_swath_height_c[k];
541 				}
542 				if (v->byte_per_pixel_in_detc[k] == 0.0) {
543 					v->lines_in_det_luma = v->det_buffer_size_in_kbyte * 1024.0 / v->byte_per_pixel_in_dety[k] / v->swath_width_yper_state[i][j][k];
544 					v->lines_in_det_chroma = 0.0;
545 				}
546 				else if (v->swath_height_yper_state[i][j][k] <= v->swath_height_cper_state[i][j][k]) {
547 					v->lines_in_det_luma = v->det_buffer_size_in_kbyte * 1024.0 / 2.0 / v->byte_per_pixel_in_dety[k] / v->swath_width_yper_state[i][j][k];
548 					v->lines_in_det_chroma = v->det_buffer_size_in_kbyte * 1024.0 / 2.0 / v->byte_per_pixel_in_detc[k] / (v->swath_width_yper_state[i][j][k] / 2.0);
549 				}
550 				else {
551 					v->lines_in_det_luma = v->det_buffer_size_in_kbyte * 1024.0 * 2.0 / 3.0 / v->byte_per_pixel_in_dety[k] / v->swath_width_yper_state[i][j][k];
552 					v->lines_in_det_chroma = v->det_buffer_size_in_kbyte * 1024.0 / 3.0 / v->byte_per_pixel_in_dety[k] / (v->swath_width_yper_state[i][j][k] / 2.0);
553 				}
554 				v->effective_lb_latency_hiding_source_lines_luma =dcn_bw_min2(v->max_line_buffer_lines,dcn_bw_floor2(v->line_buffer_size / v->lb_bit_per_pixel[k] / (v->swath_width_yper_state[i][j][k] /dcn_bw_max2(v->h_ratio[k], 1.0)), 1.0)) - (v->vtaps[k] - 1.0);
555 				v->effective_detlb_lines_luma =dcn_bw_floor2(v->lines_in_det_luma +dcn_bw_min2(v->lines_in_det_luma * v->required_dispclk[i][j] * v->byte_per_pixel_in_dety[k] * v->pscl_factor[k] / v->return_bw_per_state[i], v->effective_lb_latency_hiding_source_lines_luma), v->swath_height_yper_state[i][j][k]);
556 				if (v->byte_per_pixel_in_detc[k] == 0.0) {
557 					v->urgent_latency_support_us_per_state[i][j][k] = v->effective_detlb_lines_luma * (v->htotal[k] / v->pixel_clock[k]) / v->v_ratio[k] - v->effective_detlb_lines_luma * v->swath_width_yper_state[i][j][k] *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / (v->return_bw_per_state[i] / v->no_of_dpp[i][j][k]);
558 				}
559 				else {
560 					v->effective_lb_latency_hiding_source_lines_chroma = dcn_bw_min2(v->max_line_buffer_lines, dcn_bw_floor2(v->line_buffer_size / v->lb_bit_per_pixel[k] / (v->swath_width_yper_state[i][j][k] / 2.0 / dcn_bw_max2(v->h_ratio[k] / 2.0, 1.0)), 1.0)) - (v->vta_pschroma[k] - 1.0);
561 					v->effective_detlb_lines_chroma = dcn_bw_floor2(v->lines_in_det_chroma + dcn_bw_min2(v->lines_in_det_chroma * v->required_dispclk[i][j] * v->byte_per_pixel_in_detc[k] * v->pscl_factor_chroma[k] / v->return_bw_per_state[i], v->effective_lb_latency_hiding_source_lines_chroma), v->swath_height_cper_state[i][j][k]);
562 					v->urgent_latency_support_us_per_state[i][j][k] = dcn_bw_min2(v->effective_detlb_lines_luma * (v->htotal[k] / v->pixel_clock[k]) / v->v_ratio[k] - v->effective_detlb_lines_luma * v->swath_width_yper_state[i][j][k] * dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / (v->return_bw_per_state[i] / v->no_of_dpp[i][j][k]), v->effective_detlb_lines_chroma * (v->htotal[k] / v->pixel_clock[k]) / (v->v_ratio[k] / 2.0) - v->effective_detlb_lines_chroma * v->swath_width_yper_state[i][j][k] / 2.0 * dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / (v->return_bw_per_state[i] / v->no_of_dpp[i][j][k]));
563 				}
564 			}
565 		}
566 	}
567 	for (i = 0; i <= number_of_states_plus_one; i++) {
568 		for (j = 0; j <= 1; j++) {
569 			v->urgent_latency_support[i][j] = dcn_bw_yes;
570 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
571 				if (v->urgent_latency_support_us_per_state[i][j][k] < v->urgent_latency / 1.0) {
572 					v->urgent_latency_support[i][j] = dcn_bw_no;
573 				}
574 			}
575 		}
576 	}
577 	/*prefetch check*/
578 
579 	for (i = 0; i <= number_of_states_plus_one; i++) {
580 		for (j = 0; j <= 1; j++) {
581 			v->total_number_of_dcc_active_dpp[i][j] = 0.0;
582 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
583 				if (v->dcc_enable[k] == dcn_bw_yes) {
584 					v->total_number_of_dcc_active_dpp[i][j] = v->total_number_of_dcc_active_dpp[i][j] + v->no_of_dpp[i][j][k];
585 				}
586 			}
587 		}
588 	}
589 	for (i = 0; i <= number_of_states_plus_one; i++) {
590 		for (j = 0; j <= 1; j++) {
591 			v->projected_dcfclk_deep_sleep = 8.0;
592 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
593 				v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, v->pixel_clock[k] / 16.0);
594 				if (v->byte_per_pixel_in_detc[k] == 0.0) {
595 					if (v->v_ratio[k] <= 1.0) {
596 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 64.0 * v->h_ratio[k] * v->pixel_clock[k] / v->no_of_dpp[i][j][k]);
597 					}
598 					else {
599 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 64.0 * v->pscl_factor[k] * v->required_dispclk[i][j] / (1 + j));
600 					}
601 				}
602 				else {
603 					if (v->v_ratio[k] <= 1.0) {
604 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 32.0 * v->h_ratio[k] * v->pixel_clock[k] / v->no_of_dpp[i][j][k]);
605 					}
606 					else {
607 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 32.0 * v->pscl_factor[k] * v->required_dispclk[i][j] / (1 + j));
608 					}
609 					if (v->v_ratio[k] / 2.0 <= 1.0) {
610 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 32.0 * v->h_ratio[k] / 2.0 * v->pixel_clock[k] / v->no_of_dpp[i][j][k]);
611 					}
612 					else {
613 						v->projected_dcfclk_deep_sleep =dcn_bw_max2(v->projected_dcfclk_deep_sleep, 1.1 *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 32.0 * v->pscl_factor_chroma[k] * v->required_dispclk[i][j] / (1 + j));
614 					}
615 				}
616 			}
617 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
618 				if (v->dcc_enable[k] == dcn_bw_yes) {
619 					v->meta_req_height_y = 8.0 * v->read256_block_height_y[k];
620 					v->meta_req_width_y = 64.0 * 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / v->meta_req_height_y;
621 					v->meta_surface_width_y =dcn_bw_ceil2(v->viewport_width[k] / v->no_of_dpp[i][j][k] - 1.0, v->meta_req_width_y) + v->meta_req_width_y;
622 					v->meta_surface_height_y =dcn_bw_ceil2(v->viewport_height[k] - 1.0, v->meta_req_height_y) + v->meta_req_height_y;
623 					if (v->pte_enable == dcn_bw_yes) {
624 						v->meta_pte_bytes_per_frame_y = (dcn_bw_ceil2((v->meta_surface_width_y * v->meta_surface_height_y *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 256.0 - 4096.0) / 8.0 / 4096.0, 1.0) + 1) * 64.0;
625 					}
626 					else {
627 						v->meta_pte_bytes_per_frame_y = 0.0;
628 					}
629 					if (v->source_scan[k] == dcn_bw_hor) {
630 						v->meta_row_bytes_y = v->meta_surface_width_y * v->meta_req_height_y *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 256.0;
631 					}
632 					else {
633 						v->meta_row_bytes_y = v->meta_surface_height_y * v->meta_req_width_y *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / 256.0;
634 					}
635 				}
636 				else {
637 					v->meta_pte_bytes_per_frame_y = 0.0;
638 					v->meta_row_bytes_y = 0.0;
639 				}
640 				if (v->pte_enable == dcn_bw_yes) {
641 					if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
642 						v->macro_tile_block_size_bytes_y = 256.0;
643 						v->macro_tile_block_height_y = 1.0;
644 					}
645 					else if (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x) {
646 						v->macro_tile_block_size_bytes_y = 4096.0;
647 						v->macro_tile_block_height_y = 4.0 * v->read256_block_height_y[k];
648 					}
649 					else if (v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x) {
650 						v->macro_tile_block_size_bytes_y = 64.0 * 1024;
651 						v->macro_tile_block_height_y = 16.0 * v->read256_block_height_y[k];
652 					}
653 					else {
654 						v->macro_tile_block_size_bytes_y = 256.0 * 1024;
655 						v->macro_tile_block_height_y = 32.0 * v->read256_block_height_y[k];
656 					}
657 					if (v->macro_tile_block_size_bytes_y <= 65536.0) {
658 						v->data_pte_req_height_y = v->macro_tile_block_height_y;
659 					}
660 					else {
661 						v->data_pte_req_height_y = 16.0 * v->read256_block_height_y[k];
662 					}
663 					v->data_pte_req_width_y = 4096.0 /dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) / v->data_pte_req_height_y * 8;
664 					if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
665 						v->dpte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->viewport_width[k] / v->no_of_dpp[i][j][k] *dcn_bw_min2(128.0, dcn_bw_pow(2.0,dcn_bw_floor2(dcn_bw_log(v->pte_buffer_size_in_requests * v->data_pte_req_width_y / (v->viewport_width[k] / v->no_of_dpp[i][j][k]), 2.0), 1.0))) - 1.0) / v->data_pte_req_width_y, 1.0) + 1);
666 					}
667 					else if (v->source_scan[k] == dcn_bw_hor) {
668 						v->dpte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->viewport_width[k] / v->no_of_dpp[i][j][k] - 1.0) / v->data_pte_req_width_y, 1.0) + 1);
669 					}
670 					else {
671 						v->dpte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->viewport_height[k] - 1.0) / v->data_pte_req_height_y, 1.0) + 1);
672 					}
673 				}
674 				else {
675 					v->dpte_bytes_per_row_y = 0.0;
676 				}
677 				if ((v->source_pixel_format[k] != dcn_bw_rgb_sub_64 && v->source_pixel_format[k] != dcn_bw_rgb_sub_32 && v->source_pixel_format[k] != dcn_bw_rgb_sub_16)) {
678 					if (v->dcc_enable[k] == dcn_bw_yes) {
679 						v->meta_req_height_c = 8.0 * v->read256_block_height_c[k];
680 						v->meta_req_width_c = 64.0 * 256.0 /dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / v->meta_req_height_c;
681 						v->meta_surface_width_c =dcn_bw_ceil2(v->viewport_width[k] / v->no_of_dpp[i][j][k] / 2.0 - 1.0, v->meta_req_width_c) + v->meta_req_width_c;
682 						v->meta_surface_height_c =dcn_bw_ceil2(v->viewport_height[k] / 2.0 - 1.0, v->meta_req_height_c) + v->meta_req_height_c;
683 						if (v->pte_enable == dcn_bw_yes) {
684 							v->meta_pte_bytes_per_frame_c = (dcn_bw_ceil2((v->meta_surface_width_c * v->meta_surface_height_c *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 256.0 - 4096.0) / 8.0 / 4096.0, 1.0) + 1) * 64.0;
685 						}
686 						else {
687 							v->meta_pte_bytes_per_frame_c = 0.0;
688 						}
689 						if (v->source_scan[k] == dcn_bw_hor) {
690 							v->meta_row_bytes_c = v->meta_surface_width_c * v->meta_req_height_c *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 256.0;
691 						}
692 						else {
693 							v->meta_row_bytes_c = v->meta_surface_height_c * v->meta_req_width_c *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 256.0;
694 						}
695 					}
696 					else {
697 						v->meta_pte_bytes_per_frame_c = 0.0;
698 						v->meta_row_bytes_c = 0.0;
699 					}
700 					if (v->pte_enable == dcn_bw_yes) {
701 						if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
702 							v->macro_tile_block_size_bytes_c = 256.0;
703 							v->macro_tile_block_height_c = 1.0;
704 						}
705 						else if (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x) {
706 							v->macro_tile_block_size_bytes_c = 4096.0;
707 							v->macro_tile_block_height_c = 4.0 * v->read256_block_height_c[k];
708 						}
709 						else if (v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x) {
710 							v->macro_tile_block_size_bytes_c = 64.0 * 1024;
711 							v->macro_tile_block_height_c = 16.0 * v->read256_block_height_c[k];
712 						}
713 						else {
714 							v->macro_tile_block_size_bytes_c = 256.0 * 1024;
715 							v->macro_tile_block_height_c = 32.0 * v->read256_block_height_c[k];
716 						}
717 						v->macro_tile_block_width_c = v->macro_tile_block_size_bytes_c /dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / v->macro_tile_block_height_c;
718 						if (v->macro_tile_block_size_bytes_c <= 65536.0) {
719 							v->data_pte_req_height_c = v->macro_tile_block_height_c;
720 						}
721 						else {
722 							v->data_pte_req_height_c = 16.0 * v->read256_block_height_c[k];
723 						}
724 						v->data_pte_req_width_c = 4096.0 /dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / v->data_pte_req_height_c * 8;
725 						if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
726 							v->dpte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->viewport_width[k] / v->no_of_dpp[i][j][k] / 2.0 * dcn_bw_min2(128.0, dcn_bw_pow(2.0,dcn_bw_floor2(dcn_bw_log(v->pte_buffer_size_in_requests * v->data_pte_req_width_c / (v->viewport_width[k] / v->no_of_dpp[i][j][k] / 2.0), 2.0), 1.0))) - 1.0) / v->data_pte_req_width_c, 1.0) + 1);
727 						}
728 						else if (v->source_scan[k] == dcn_bw_hor) {
729 							v->dpte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->viewport_width[k] / v->no_of_dpp[i][j][k] / 2.0 - 1.0) / v->data_pte_req_width_c, 1.0) + 1);
730 						}
731 						else {
732 							v->dpte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->viewport_height[k] / 2.0 - 1.0) / v->data_pte_req_height_c, 1.0) + 1);
733 						}
734 					}
735 					else {
736 						v->dpte_bytes_per_row_c = 0.0;
737 					}
738 				}
739 				else {
740 					v->dpte_bytes_per_row_c = 0.0;
741 					v->meta_pte_bytes_per_frame_c = 0.0;
742 					v->meta_row_bytes_c = 0.0;
743 				}
744 				v->dpte_bytes_per_row[k] = v->dpte_bytes_per_row_y + v->dpte_bytes_per_row_c;
745 				v->meta_pte_bytes_per_frame[k] = v->meta_pte_bytes_per_frame_y + v->meta_pte_bytes_per_frame_c;
746 				v->meta_row_bytes[k] = v->meta_row_bytes_y + v->meta_row_bytes_c;
747 				v->v_init_y = (v->v_ratio[k] + v->vtaps[k] + 1.0 + v->interlace_output[k] * 0.5 * v->v_ratio[k]) / 2.0;
748 				v->prefill_y[k] =dcn_bw_floor2(v->v_init_y, 1.0);
749 				v->max_num_sw_y[k] =dcn_bw_ceil2((v->prefill_y[k] - 1.0) / v->swath_height_yper_state[i][j][k], 1.0) + 1;
750 				if (v->prefill_y[k] > 1.0) {
751 					v->max_partial_sw_y =dcn_bw_mod((v->prefill_y[k] - 2.0), v->swath_height_yper_state[i][j][k]);
752 				}
753 				else {
754 					v->max_partial_sw_y =dcn_bw_mod((v->prefill_y[k] + v->swath_height_yper_state[i][j][k] - 2.0), v->swath_height_yper_state[i][j][k]);
755 				}
756 				v->max_partial_sw_y =dcn_bw_max2(1.0, v->max_partial_sw_y);
757 				v->prefetch_lines_y[k] = v->max_num_sw_y[k] * v->swath_height_yper_state[i][j][k] + v->max_partial_sw_y;
758 				if ((v->source_pixel_format[k] != dcn_bw_rgb_sub_64 && v->source_pixel_format[k] != dcn_bw_rgb_sub_32 && v->source_pixel_format[k] != dcn_bw_rgb_sub_16)) {
759 					v->v_init_c = (v->v_ratio[k] / 2.0 + v->vtaps[k] + 1.0 + v->interlace_output[k] * 0.5 * v->v_ratio[k] / 2.0) / 2.0;
760 					v->prefill_c[k] =dcn_bw_floor2(v->v_init_c, 1.0);
761 					v->max_num_sw_c[k] =dcn_bw_ceil2((v->prefill_c[k] - 1.0) / v->swath_height_cper_state[i][j][k], 1.0) + 1;
762 					if (v->prefill_c[k] > 1.0) {
763 						v->max_partial_sw_c =dcn_bw_mod((v->prefill_c[k] - 2.0), v->swath_height_cper_state[i][j][k]);
764 					}
765 					else {
766 						v->max_partial_sw_c =dcn_bw_mod((v->prefill_c[k] + v->swath_height_cper_state[i][j][k] - 2.0), v->swath_height_cper_state[i][j][k]);
767 					}
768 					v->max_partial_sw_c =dcn_bw_max2(1.0, v->max_partial_sw_c);
769 					v->prefetch_lines_c[k] = v->max_num_sw_c[k] * v->swath_height_cper_state[i][j][k] + v->max_partial_sw_c;
770 				}
771 				else {
772 					v->prefetch_lines_c[k] = 0.0;
773 				}
774 				v->dst_x_after_scaler = 90.0 * v->pixel_clock[k] / (v->required_dispclk[i][j] / (j + 1)) + 42.0 * v->pixel_clock[k] / v->required_dispclk[i][j];
775 				if (v->no_of_dpp[i][j][k] > 1.0) {
776 					v->dst_x_after_scaler = v->dst_x_after_scaler + v->scaler_rec_out_width[k] / 2.0;
777 				}
778 				if (v->output_format[k] == dcn_bw_420) {
779 					v->dst_y_after_scaler = 1.0;
780 				}
781 				else {
782 					v->dst_y_after_scaler = 0.0;
783 				}
784 				v->time_calc = 24.0 / v->projected_dcfclk_deep_sleep;
785 				v->v_update_offset[k][j] = dcn_bw_ceil2(v->htotal[k] / 4.0, 1.0);
786 				v->total_repeater_delay = v->max_inter_dcn_tile_repeaters * (2.0 / (v->required_dispclk[i][j] / (j + 1)) + 3.0 / v->required_dispclk[i][j]);
787 				v->v_update_width[k][j] = (14.0 / v->projected_dcfclk_deep_sleep + 12.0 / (v->required_dispclk[i][j] / (j + 1)) + v->total_repeater_delay) * v->pixel_clock[k];
788 				v->v_ready_offset[k][j] = dcn_bw_max2(150.0 / (v->required_dispclk[i][j] / (j + 1)), v->total_repeater_delay + 20.0 / v->projected_dcfclk_deep_sleep + 10.0 / (v->required_dispclk[i][j] / (j + 1))) * v->pixel_clock[k];
789 				v->time_setup = (v->v_update_offset[k][j] + v->v_update_width[k][j] + v->v_ready_offset[k][j]) / v->pixel_clock[k];
790 				v->extra_latency = v->urgent_round_trip_and_out_of_order_latency_per_state[i] + (v->total_number_of_active_dpp[i][j] * v->pixel_chunk_size_in_kbyte + v->total_number_of_dcc_active_dpp[i][j] * v->meta_chunk_size) * 1024.0 / v->return_bw_per_state[i];
791 				if (v->pte_enable == dcn_bw_yes) {
792 					v->extra_latency = v->extra_latency + v->total_number_of_active_dpp[i][j] * v->pte_chunk_size * 1024.0 / v->return_bw_per_state[i];
793 				}
794 				if (v->can_vstartup_lines_exceed_vsync_plus_back_porch_lines_minus_one == dcn_bw_yes) {
795 					v->maximum_vstartup = v->vtotal[k] - v->vactive[k] - 1.0;
796 				}
797 				else {
798 					v->maximum_vstartup = v->v_sync_plus_back_porch[k] - 1.0;
799 				}
800 
801 				do {
802 					v->line_times_for_prefetch[k] = v->maximum_vstartup - v->urgent_latency / (v->htotal[k] / v->pixel_clock[k]) - (v->time_calc + v->time_setup) / (v->htotal[k] / v->pixel_clock[k]) - (v->dst_y_after_scaler + v->dst_x_after_scaler / v->htotal[k]);
803 					v->line_times_for_prefetch[k] =dcn_bw_floor2(4.0 * (v->line_times_for_prefetch[k] + 0.125), 1.0) / 4;
804 					v->prefetch_bw[k] = (v->meta_pte_bytes_per_frame[k] + 2.0 * v->meta_row_bytes[k] + 2.0 * v->dpte_bytes_per_row[k] + v->prefetch_lines_y[k] * v->swath_width_yper_state[i][j][k] *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) + v->prefetch_lines_c[k] * v->swath_width_yper_state[i][j][k] / 2.0 *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0)) / (v->line_times_for_prefetch[k] * v->htotal[k] / v->pixel_clock[k]);
805 
806 					if (v->pte_enable == dcn_bw_yes && v->dcc_enable[k] == dcn_bw_yes) {
807 						v->time_for_meta_pte_without_immediate_flip = dcn_bw_max3(
808 								v->meta_pte_bytes_frame[k] / v->prefetch_bw[k],
809 								v->extra_latency,
810 								v->htotal[k] / v->pixel_clock[k] / 4.0);
811 					} else {
812 						v->time_for_meta_pte_without_immediate_flip = v->htotal[k] / v->pixel_clock[k] / 4.0;
813 					}
814 
815 					if (v->pte_enable == dcn_bw_yes || v->dcc_enable[k] == dcn_bw_yes) {
816 						v->time_for_meta_and_dpte_row_without_immediate_flip = dcn_bw_max3((
817 								v->meta_row_bytes[k] + v->dpte_bytes_per_row[k]) / v->prefetch_bw[k],
818 								v->htotal[k] / v->pixel_clock[k] - v->time_for_meta_pte_without_immediate_flip,
819 								v->extra_latency);
820 					} else {
821 						v->time_for_meta_and_dpte_row_without_immediate_flip = dcn_bw_max2(
822 								v->htotal[k] / v->pixel_clock[k] - v->time_for_meta_pte_without_immediate_flip,
823 								v->extra_latency - v->time_for_meta_pte_with_immediate_flip);
824 					}
825 
826 					v->lines_for_meta_pte_without_immediate_flip[k] =dcn_bw_floor2(4.0 * (v->time_for_meta_pte_without_immediate_flip / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
827 					v->lines_for_meta_and_dpte_row_without_immediate_flip[k] =dcn_bw_floor2(4.0 * (v->time_for_meta_and_dpte_row_without_immediate_flip / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
828 					v->maximum_vstartup = v->maximum_vstartup - 1;
829 
830 					if (v->lines_for_meta_pte_without_immediate_flip[k] < 32.0 && v->lines_for_meta_and_dpte_row_without_immediate_flip[k] < 16.0)
831 						break;
832 
833 				} while(1);
834 			}
835 			v->bw_available_for_immediate_flip = v->return_bw_per_state[i];
836 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
837 				v->bw_available_for_immediate_flip = v->bw_available_for_immediate_flip -dcn_bw_max2(v->read_bandwidth[k], v->prefetch_bw[k]);
838 			}
839 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
840 				v->total_immediate_flip_bytes[k] = 0.0;
841 				if ((v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
842 					v->total_immediate_flip_bytes[k] = v->total_immediate_flip_bytes[k] + v->meta_pte_bytes_per_frame[k] + v->meta_row_bytes[k] + v->dpte_bytes_per_row[k];
843 				}
844 			}
845 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
846 				if (v->pte_enable == dcn_bw_yes && v->dcc_enable[k] == dcn_bw_yes) {
847 					v->time_for_meta_pte_with_immediate_flip =dcn_bw_max5(v->meta_pte_bytes_per_frame[k] / v->prefetch_bw[k], v->meta_pte_bytes_per_frame[k] * v->total_immediate_flip_bytes[k] / (v->bw_available_for_immediate_flip * (v->meta_pte_bytes_per_frame[k] + v->meta_row_bytes[k] + v->dpte_bytes_per_row[k])), v->extra_latency, v->urgent_latency, v->htotal[k] / v->pixel_clock[k] / 4.0);
848 				}
849 				else {
850 					v->time_for_meta_pte_with_immediate_flip = v->htotal[k] / v->pixel_clock[k] / 4.0;
851 				}
852 				if (v->pte_enable == dcn_bw_yes || v->dcc_enable[k] == dcn_bw_yes) {
853 					v->time_for_meta_and_dpte_row_with_immediate_flip =dcn_bw_max5((v->meta_row_bytes[k] + v->dpte_bytes_per_row[k]) / v->prefetch_bw[k], (v->meta_row_bytes[k] + v->dpte_bytes_per_row[k]) * v->total_immediate_flip_bytes[k] / (v->bw_available_for_immediate_flip * (v->meta_pte_bytes_per_frame[k] + v->meta_row_bytes[k] + v->dpte_bytes_per_row[k])), v->htotal[k] / v->pixel_clock[k] - v->time_for_meta_pte_with_immediate_flip, v->extra_latency, 2.0 * v->urgent_latency);
854 				}
855 				else {
856 					v->time_for_meta_and_dpte_row_with_immediate_flip =dcn_bw_max2(v->htotal[k] / v->pixel_clock[k] - v->time_for_meta_pte_with_immediate_flip, v->extra_latency - v->time_for_meta_pte_with_immediate_flip);
857 				}
858 				v->lines_for_meta_pte_with_immediate_flip[k] =dcn_bw_floor2(4.0 * (v->time_for_meta_pte_with_immediate_flip / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
859 				v->lines_for_meta_and_dpte_row_with_immediate_flip[k] =dcn_bw_floor2(4.0 * (v->time_for_meta_and_dpte_row_with_immediate_flip / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
860 				v->line_times_to_request_prefetch_pixel_data_with_immediate_flip = v->line_times_for_prefetch[k] - v->lines_for_meta_pte_with_immediate_flip[k] - v->lines_for_meta_and_dpte_row_with_immediate_flip[k];
861 				v->line_times_to_request_prefetch_pixel_data_without_immediate_flip = v->line_times_for_prefetch[k] - v->lines_for_meta_pte_without_immediate_flip[k] - v->lines_for_meta_and_dpte_row_without_immediate_flip[k];
862 				if (v->line_times_to_request_prefetch_pixel_data_with_immediate_flip > 0.0) {
863 					v->v_ratio_pre_ywith_immediate_flip[i][j][k] = v->prefetch_lines_y[k] / v->line_times_to_request_prefetch_pixel_data_with_immediate_flip;
864 					if ((v->swath_height_yper_state[i][j][k] > 4.0)) {
865 						if (v->line_times_to_request_prefetch_pixel_data_with_immediate_flip - (v->prefill_y[k] - 3.0) / 2.0 > 0.0) {
866 							v->v_ratio_pre_ywith_immediate_flip[i][j][k] =dcn_bw_max2(v->v_ratio_pre_ywith_immediate_flip[i][j][k], (v->max_num_sw_y[k] * v->swath_height_yper_state[i][j][k]) / (v->line_times_to_request_prefetch_pixel_data_with_immediate_flip - (v->prefill_y[k] - 3.0) / 2.0));
867 						}
868 						else {
869 							v->v_ratio_pre_ywith_immediate_flip[i][j][k] = 999999.0;
870 						}
871 					}
872 					v->v_ratio_pre_cwith_immediate_flip[i][j][k] = v->prefetch_lines_c[k] / v->line_times_to_request_prefetch_pixel_data_with_immediate_flip;
873 					if ((v->swath_height_cper_state[i][j][k] > 4.0)) {
874 						if (v->line_times_to_request_prefetch_pixel_data_with_immediate_flip - (v->prefill_c[k] - 3.0) / 2.0 > 0.0) {
875 							v->v_ratio_pre_cwith_immediate_flip[i][j][k] =dcn_bw_max2(v->v_ratio_pre_cwith_immediate_flip[i][j][k], (v->max_num_sw_c[k] * v->swath_height_cper_state[i][j][k]) / (v->line_times_to_request_prefetch_pixel_data_with_immediate_flip - (v->prefill_c[k] - 3.0) / 2.0));
876 						}
877 						else {
878 							v->v_ratio_pre_cwith_immediate_flip[i][j][k] = 999999.0;
879 						}
880 					}
881 					v->required_prefetch_pixel_data_bw_with_immediate_flip[i][j][k] = v->no_of_dpp[i][j][k] * (v->prefetch_lines_y[k] / v->line_times_to_request_prefetch_pixel_data_with_immediate_flip *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) + v->prefetch_lines_c[k] / v->line_times_to_request_prefetch_pixel_data_with_immediate_flip *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 2.0) * v->swath_width_yper_state[i][j][k] / (v->htotal[k] / v->pixel_clock[k]);
882 				}
883 				else {
884 					v->v_ratio_pre_ywith_immediate_flip[i][j][k] = 999999.0;
885 					v->v_ratio_pre_cwith_immediate_flip[i][j][k] = 999999.0;
886 					v->required_prefetch_pixel_data_bw_with_immediate_flip[i][j][k] = 999999.0;
887 				}
888 				if (v->line_times_to_request_prefetch_pixel_data_without_immediate_flip > 0.0) {
889 					v->v_ratio_pre_ywithout_immediate_flip[i][j][k] = v->prefetch_lines_y[k] / v->line_times_to_request_prefetch_pixel_data_without_immediate_flip;
890 					if ((v->swath_height_yper_state[i][j][k] > 4.0)) {
891 						if (v->line_times_to_request_prefetch_pixel_data_without_immediate_flip - (v->prefill_y[k] - 3.0) / 2.0 > 0.0) {
892 							v->v_ratio_pre_ywithout_immediate_flip[i][j][k] =dcn_bw_max2(v->v_ratio_pre_ywithout_immediate_flip[i][j][k], (v->max_num_sw_y[k] * v->swath_height_yper_state[i][j][k]) / (v->line_times_to_request_prefetch_pixel_data_without_immediate_flip - (v->prefill_y[k] - 3.0) / 2.0));
893 						}
894 						else {
895 							v->v_ratio_pre_ywithout_immediate_flip[i][j][k] = 999999.0;
896 						}
897 					}
898 					v->v_ratio_pre_cwithout_immediate_flip[i][j][k] = v->prefetch_lines_c[k] / v->line_times_to_request_prefetch_pixel_data_without_immediate_flip;
899 					if ((v->swath_height_cper_state[i][j][k] > 4.0)) {
900 						if (v->line_times_to_request_prefetch_pixel_data_without_immediate_flip - (v->prefill_c[k] - 3.0) / 2.0 > 0.0) {
901 							v->v_ratio_pre_cwithout_immediate_flip[i][j][k] =dcn_bw_max2(v->v_ratio_pre_cwithout_immediate_flip[i][j][k], (v->max_num_sw_c[k] * v->swath_height_cper_state[i][j][k]) / (v->line_times_to_request_prefetch_pixel_data_without_immediate_flip - (v->prefill_c[k] - 3.0) / 2.0));
902 						}
903 						else {
904 							v->v_ratio_pre_cwithout_immediate_flip[i][j][k] = 999999.0;
905 						}
906 					}
907 					v->required_prefetch_pixel_data_bw_without_immediate_flip[i][j][k] = v->no_of_dpp[i][j][k] * (v->prefetch_lines_y[k] / v->line_times_to_request_prefetch_pixel_data_without_immediate_flip *dcn_bw_ceil2(v->byte_per_pixel_in_dety[k], 1.0) + v->prefetch_lines_c[k] / v->line_times_to_request_prefetch_pixel_data_without_immediate_flip *dcn_bw_ceil2(v->byte_per_pixel_in_detc[k], 2.0) / 2.0) * v->swath_width_yper_state[i][j][k] / (v->htotal[k] / v->pixel_clock[k]);
908 				}
909 				else {
910 					v->v_ratio_pre_ywithout_immediate_flip[i][j][k] = 999999.0;
911 					v->v_ratio_pre_cwithout_immediate_flip[i][j][k] = 999999.0;
912 					v->required_prefetch_pixel_data_bw_without_immediate_flip[i][j][k] = 999999.0;
913 				}
914 			}
915 			v->maximum_read_bandwidth_with_prefetch_with_immediate_flip = 0.0;
916 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
917 				if ((v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
918 					v->maximum_read_bandwidth_with_prefetch_with_immediate_flip = v->maximum_read_bandwidth_with_prefetch_with_immediate_flip +dcn_bw_max2(v->read_bandwidth[k], v->required_prefetch_pixel_data_bw_with_immediate_flip[i][j][k]) +dcn_bw_max2(v->meta_pte_bytes_per_frame[k] / (v->lines_for_meta_pte_with_immediate_flip[k] * v->htotal[k] / v->pixel_clock[k]), (v->meta_row_bytes[k] + v->dpte_bytes_per_row[k]) / (v->lines_for_meta_and_dpte_row_with_immediate_flip[k] * v->htotal[k] / v->pixel_clock[k]));
919 				}
920 				else {
921 					v->maximum_read_bandwidth_with_prefetch_with_immediate_flip = v->maximum_read_bandwidth_with_prefetch_with_immediate_flip +dcn_bw_max2(v->read_bandwidth[k], v->required_prefetch_pixel_data_bw_without_immediate_flip[i][j][k]);
922 				}
923 			}
924 			v->maximum_read_bandwidth_with_prefetch_without_immediate_flip = 0.0;
925 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
926 				v->maximum_read_bandwidth_with_prefetch_without_immediate_flip = v->maximum_read_bandwidth_with_prefetch_without_immediate_flip +dcn_bw_max2(v->read_bandwidth[k], v->required_prefetch_pixel_data_bw_without_immediate_flip[i][j][k]);
927 			}
928 			v->prefetch_supported_with_immediate_flip[i][j] = dcn_bw_yes;
929 			if (v->maximum_read_bandwidth_with_prefetch_with_immediate_flip > v->return_bw_per_state[i]) {
930 				v->prefetch_supported_with_immediate_flip[i][j] = dcn_bw_no;
931 			}
932 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
933 				if (v->line_times_for_prefetch[k] < 2.0 || v->lines_for_meta_pte_with_immediate_flip[k] >= 8.0 || v->lines_for_meta_and_dpte_row_with_immediate_flip[k] >= 16.0) {
934 					v->prefetch_supported_with_immediate_flip[i][j] = dcn_bw_no;
935 				}
936 			}
937 			v->prefetch_supported_without_immediate_flip[i][j] = dcn_bw_yes;
938 			if (v->maximum_read_bandwidth_with_prefetch_without_immediate_flip > v->return_bw_per_state[i]) {
939 				v->prefetch_supported_without_immediate_flip[i][j] = dcn_bw_no;
940 			}
941 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
942 				if (v->line_times_for_prefetch[k] < 2.0 || v->lines_for_meta_pte_without_immediate_flip[k] >= 8.0 || v->lines_for_meta_and_dpte_row_without_immediate_flip[k] >= 16.0) {
943 					v->prefetch_supported_without_immediate_flip[i][j] = dcn_bw_no;
944 				}
945 			}
946 		}
947 	}
948 	for (i = 0; i <= number_of_states_plus_one; i++) {
949 		for (j = 0; j <= 1; j++) {
950 			v->v_ratio_in_prefetch_supported_with_immediate_flip[i][j] = dcn_bw_yes;
951 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
952 				if ((((v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10) && (v->v_ratio_pre_ywith_immediate_flip[i][j][k] > 4.0 || v->v_ratio_pre_cwith_immediate_flip[i][j][k] > 4.0)) || ((v->source_pixel_format[k] == dcn_bw_yuv420_sub_8 || v->source_pixel_format[k] == dcn_bw_yuv420_sub_10) && (v->v_ratio_pre_ywithout_immediate_flip[i][j][k] > 4.0 || v->v_ratio_pre_cwithout_immediate_flip[i][j][k] > 4.0)))) {
953 					v->v_ratio_in_prefetch_supported_with_immediate_flip[i][j] = dcn_bw_no;
954 				}
955 			}
956 			v->v_ratio_in_prefetch_supported_without_immediate_flip[i][j] = dcn_bw_yes;
957 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
958 				if ((v->v_ratio_pre_ywithout_immediate_flip[i][j][k] > 4.0 || v->v_ratio_pre_cwithout_immediate_flip[i][j][k] > 4.0)) {
959 					v->v_ratio_in_prefetch_supported_without_immediate_flip[i][j] = dcn_bw_no;
960 				}
961 			}
962 		}
963 	}
964 	/*mode support, voltage state and soc configuration*/
965 
966 	for (i = number_of_states_plus_one; i >= 0; i--) {
967 		for (j = 0; j <= 1; j++) {
968 			if (v->scale_ratio_support == dcn_bw_yes && v->source_format_pixel_and_scan_support == dcn_bw_yes && v->viewport_size_support == dcn_bw_yes && v->bandwidth_support[i] == dcn_bw_yes && v->dio_support[i] == dcn_bw_yes && v->urgent_latency_support[i][j] == dcn_bw_yes && v->rob_support[i] == dcn_bw_yes && v->dispclk_dppclk_support[i][j] == dcn_bw_yes && v->total_available_pipes_support[i][j] == dcn_bw_yes && v->total_available_writeback_support == dcn_bw_yes && v->writeback_latency_support == dcn_bw_yes) {
969 				if (v->prefetch_supported_with_immediate_flip[i][j] == dcn_bw_yes && v->v_ratio_in_prefetch_supported_with_immediate_flip[i][j] == dcn_bw_yes) {
970 					v->mode_support_with_immediate_flip[i][j] = dcn_bw_yes;
971 				}
972 				else {
973 					v->mode_support_with_immediate_flip[i][j] = dcn_bw_no;
974 				}
975 				if (v->prefetch_supported_without_immediate_flip[i][j] == dcn_bw_yes && v->v_ratio_in_prefetch_supported_without_immediate_flip[i][j] == dcn_bw_yes) {
976 					v->mode_support_without_immediate_flip[i][j] = dcn_bw_yes;
977 				}
978 				else {
979 					v->mode_support_without_immediate_flip[i][j] = dcn_bw_no;
980 				}
981 			}
982 			else {
983 				v->mode_support_with_immediate_flip[i][j] = dcn_bw_no;
984 				v->mode_support_without_immediate_flip[i][j] = dcn_bw_no;
985 			}
986 		}
987 	}
988 	for (i = number_of_states_plus_one; i >= 0; i--) {
989 		if ((i == number_of_states_plus_one || v->mode_support_with_immediate_flip[i][1] == dcn_bw_yes || v->mode_support_with_immediate_flip[i][0] == dcn_bw_yes) && i >= v->voltage_override_level) {
990 			v->voltage_level_with_immediate_flip = i;
991 		}
992 	}
993 	for (i = number_of_states_plus_one; i >= 0; i--) {
994 		if ((i == number_of_states_plus_one || v->mode_support_without_immediate_flip[i][1] == dcn_bw_yes || v->mode_support_without_immediate_flip[i][0] == dcn_bw_yes) && i >= v->voltage_override_level) {
995 			v->voltage_level_without_immediate_flip = i;
996 		}
997 	}
998 	if (v->voltage_level_with_immediate_flip == number_of_states_plus_one) {
999 		v->immediate_flip_supported = dcn_bw_no;
1000 		v->voltage_level = v->voltage_level_without_immediate_flip;
1001 	}
1002 	else {
1003 		v->immediate_flip_supported = dcn_bw_yes;
1004 		v->voltage_level = v->voltage_level_with_immediate_flip;
1005 	}
1006 	v->dcfclk = v->dcfclk_per_state[v->voltage_level];
1007 	v->fabric_and_dram_bandwidth = v->fabric_and_dram_bandwidth_per_state[v->voltage_level];
1008 	for (j = 0; j <= 1; j++) {
1009 		v->required_dispclk_per_ratio[j] = v->required_dispclk[v->voltage_level][j];
1010 		for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1011 			v->dpp_per_plane_per_ratio[j][k] = v->no_of_dpp[v->voltage_level][j][k];
1012 		}
1013 		v->dispclk_dppclk_support_per_ratio[j] = v->dispclk_dppclk_support[v->voltage_level][j];
1014 	}
1015 	v->max_phyclk = v->phyclk_per_state[v->voltage_level];
1016 }
display_pipe_configuration(struct dcn_bw_internal_vars * v)1017 void display_pipe_configuration(struct dcn_bw_internal_vars *v)
1018 {
1019 	int j;
1020 	int k;
1021 	/*display pipe configuration*/
1022 
1023 	for (j = 0; j <= 1; j++) {
1024 		v->total_number_of_active_dpp_per_ratio[j] = 0.0;
1025 		for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1026 			v->total_number_of_active_dpp_per_ratio[j] = v->total_number_of_active_dpp_per_ratio[j] + v->dpp_per_plane_per_ratio[j][k];
1027 		}
1028 	}
1029 	if ((v->dispclk_dppclk_support_per_ratio[0] == dcn_bw_yes && v->dispclk_dppclk_support_per_ratio[1] == dcn_bw_no) || (v->dispclk_dppclk_support_per_ratio[0] == v->dispclk_dppclk_support_per_ratio[1] && (v->total_number_of_active_dpp_per_ratio[0] < v->total_number_of_active_dpp_per_ratio[1] || (((v->total_number_of_active_dpp_per_ratio[0] == v->total_number_of_active_dpp_per_ratio[1]) && v->required_dispclk_per_ratio[0] <= 0.5 * v->required_dispclk_per_ratio[1]))))) {
1030 		v->dispclk_dppclk_ratio = 1;
1031 		v->final_error_message = v->error_message[0];
1032 	}
1033 	else {
1034 		v->dispclk_dppclk_ratio = 2;
1035 		v->final_error_message = v->error_message[1];
1036 	}
1037 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1038 		v->dpp_per_plane[k] = v->dpp_per_plane_per_ratio[v->dispclk_dppclk_ratio - 1][k];
1039 	}
1040 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1041 		if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
1042 			v->byte_per_pix_dety = 8.0;
1043 			v->byte_per_pix_detc = 0.0;
1044 		}
1045 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_32) {
1046 			v->byte_per_pix_dety = 4.0;
1047 			v->byte_per_pix_detc = 0.0;
1048 		}
1049 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_16) {
1050 			v->byte_per_pix_dety = 2.0;
1051 			v->byte_per_pix_detc = 0.0;
1052 		}
1053 		else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
1054 			v->byte_per_pix_dety = 1.0;
1055 			v->byte_per_pix_detc = 2.0;
1056 		}
1057 		else {
1058 			v->byte_per_pix_dety = 4.0f / 3.0f;
1059 			v->byte_per_pix_detc = 8.0f / 3.0f;
1060 		}
1061 		if ((v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16)) {
1062 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1063 				v->read256_bytes_block_height_y = 1.0;
1064 			}
1065 			else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
1066 				v->read256_bytes_block_height_y = 4.0;
1067 			}
1068 			else {
1069 				v->read256_bytes_block_height_y = 8.0;
1070 			}
1071 			v->read256_bytes_block_width_y = 256.0 /dcn_bw_ceil2(v->byte_per_pix_dety, 1.0) / v->read256_bytes_block_height_y;
1072 			v->read256_bytes_block_height_c = 0.0;
1073 			v->read256_bytes_block_width_c = 0.0;
1074 		}
1075 		else {
1076 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1077 				v->read256_bytes_block_height_y = 1.0;
1078 				v->read256_bytes_block_height_c = 1.0;
1079 			}
1080 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
1081 				v->read256_bytes_block_height_y = 16.0;
1082 				v->read256_bytes_block_height_c = 8.0;
1083 			}
1084 			else {
1085 				v->read256_bytes_block_height_y = 8.0;
1086 				v->read256_bytes_block_height_c = 8.0;
1087 			}
1088 			v->read256_bytes_block_width_y = 256.0 /dcn_bw_ceil2(v->byte_per_pix_dety, 1.0) / v->read256_bytes_block_height_y;
1089 			v->read256_bytes_block_width_c = 256.0 /dcn_bw_ceil2(v->byte_per_pix_detc, 2.0) / v->read256_bytes_block_height_c;
1090 		}
1091 		if (v->source_scan[k] == dcn_bw_hor) {
1092 			v->maximum_swath_height_y = v->read256_bytes_block_height_y;
1093 			v->maximum_swath_height_c = v->read256_bytes_block_height_c;
1094 		}
1095 		else {
1096 			v->maximum_swath_height_y = v->read256_bytes_block_width_y;
1097 			v->maximum_swath_height_c = v->read256_bytes_block_width_c;
1098 		}
1099 		if ((v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16)) {
1100 			if (v->source_surface_mode[k] == dcn_bw_sw_linear || (v->source_pixel_format[k] == dcn_bw_rgb_sub_64 && (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_var_s || v->source_surface_mode[k] == dcn_bw_sw_var_s_x) && v->source_scan[k] == dcn_bw_hor)) {
1101 				v->minimum_swath_height_y = v->maximum_swath_height_y;
1102 			}
1103 			else {
1104 				v->minimum_swath_height_y = v->maximum_swath_height_y / 2.0;
1105 			}
1106 			v->minimum_swath_height_c = v->maximum_swath_height_c;
1107 		}
1108 		else {
1109 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1110 				v->minimum_swath_height_y = v->maximum_swath_height_y;
1111 				v->minimum_swath_height_c = v->maximum_swath_height_c;
1112 			}
1113 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8 && v->source_scan[k] == dcn_bw_hor) {
1114 				v->minimum_swath_height_y = v->maximum_swath_height_y / 2.0;
1115 				if (v->bug_forcing_luma_and_chroma_request_to_same_size_fixed == dcn_bw_yes) {
1116 					v->minimum_swath_height_c = v->maximum_swath_height_c;
1117 				}
1118 				else {
1119 					v->minimum_swath_height_c = v->maximum_swath_height_c / 2.0;
1120 				}
1121 			}
1122 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10 && v->source_scan[k] == dcn_bw_hor) {
1123 				v->minimum_swath_height_c = v->maximum_swath_height_c / 2.0;
1124 				if (v->bug_forcing_luma_and_chroma_request_to_same_size_fixed == dcn_bw_yes) {
1125 					v->minimum_swath_height_y = v->maximum_swath_height_y;
1126 				}
1127 				else {
1128 					v->minimum_swath_height_y = v->maximum_swath_height_y / 2.0;
1129 				}
1130 			}
1131 			else {
1132 				v->minimum_swath_height_y = v->maximum_swath_height_y;
1133 				v->minimum_swath_height_c = v->maximum_swath_height_c;
1134 			}
1135 		}
1136 		if (v->source_scan[k] == dcn_bw_hor) {
1137 			v->swath_width = v->viewport_width[k] / v->dpp_per_plane[k];
1138 		}
1139 		else {
1140 			v->swath_width = v->viewport_height[k] / v->dpp_per_plane[k];
1141 		}
1142 		v->swath_width_granularity_y = 256.0 /dcn_bw_ceil2(v->byte_per_pix_dety, 1.0) / v->maximum_swath_height_y;
1143 		v->rounded_up_max_swath_size_bytes_y = (dcn_bw_ceil2(v->swath_width - 1.0, v->swath_width_granularity_y) + v->swath_width_granularity_y) * v->byte_per_pix_dety * v->maximum_swath_height_y;
1144 		if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10) {
1145 			v->rounded_up_max_swath_size_bytes_y =dcn_bw_ceil2(v->rounded_up_max_swath_size_bytes_y, 256.0) + 256;
1146 		}
1147 		if (v->maximum_swath_height_c > 0.0) {
1148 			v->swath_width_granularity_c = 256.0 /dcn_bw_ceil2(v->byte_per_pix_detc, 2.0) / v->maximum_swath_height_c;
1149 			v->rounded_up_max_swath_size_bytes_c = (dcn_bw_ceil2(v->swath_width / 2.0 - 1.0, v->swath_width_granularity_c) + v->swath_width_granularity_c) * v->byte_per_pix_detc * v->maximum_swath_height_c;
1150 			if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_10) {
1151 				v->rounded_up_max_swath_size_bytes_c = dcn_bw_ceil2(v->rounded_up_max_swath_size_bytes_c, 256.0) + 256;
1152 			}
1153 		}
1154 		if (v->rounded_up_max_swath_size_bytes_y + v->rounded_up_max_swath_size_bytes_c <= v->det_buffer_size_in_kbyte * 1024.0 / 2.0) {
1155 			v->swath_height_y[k] = v->maximum_swath_height_y;
1156 			v->swath_height_c[k] = v->maximum_swath_height_c;
1157 		}
1158 		else {
1159 			v->swath_height_y[k] = v->minimum_swath_height_y;
1160 			v->swath_height_c[k] = v->minimum_swath_height_c;
1161 		}
1162 		if (v->swath_height_c[k] == 0.0) {
1163 			v->det_buffer_size_y[k] = v->det_buffer_size_in_kbyte * 1024.0;
1164 			v->det_buffer_size_c[k] = 0.0;
1165 		}
1166 		else if (v->swath_height_y[k] <= v->swath_height_c[k]) {
1167 			v->det_buffer_size_y[k] = v->det_buffer_size_in_kbyte * 1024.0 / 2.0;
1168 			v->det_buffer_size_c[k] = v->det_buffer_size_in_kbyte * 1024.0 / 2.0;
1169 		}
1170 		else {
1171 			v->det_buffer_size_y[k] = v->det_buffer_size_in_kbyte * 1024.0 * 2.0 / 3.0;
1172 			v->det_buffer_size_c[k] = v->det_buffer_size_in_kbyte * 1024.0 / 3.0;
1173 		}
1174 	}
1175 }
dispclkdppclkdcfclk_deep_sleep_prefetch_parameters_watermarks_and_performance_calculation(struct dcn_bw_internal_vars * v)1176 void dispclkdppclkdcfclk_deep_sleep_prefetch_parameters_watermarks_and_performance_calculation(struct dcn_bw_internal_vars *v)
1177 {
1178 	int k;
1179 	/*dispclk and dppclk calculation*/
1180 
1181 	v->dispclk_with_ramping = 0.0;
1182 	v->dispclk_without_ramping = 0.0;
1183 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1184 		if (v->h_ratio[k] > 1.0) {
1185 			v->pscl_throughput[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput * v->h_ratio[k] /dcn_bw_ceil2(v->htaps[k] / 6.0, 1.0));
1186 		}
1187 		else {
1188 			v->pscl_throughput[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput);
1189 		}
1190 		v->dppclk_using_single_dpp_luma = v->pixel_clock[k] *dcn_bw_max3(v->vtaps[k] / 6.0 *dcn_bw_min2(1.0, v->h_ratio[k]), v->h_ratio[k] * v->v_ratio[k] / v->pscl_throughput[k], 1.0);
1191 		if ((v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
1192 			v->pscl_throughput_chroma[k] = 0.0;
1193 			v->dppclk_using_single_dpp = v->dppclk_using_single_dpp_luma;
1194 		}
1195 		else {
1196 			if (v->h_ratio[k] > 1.0) {
1197 				v->pscl_throughput_chroma[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput * v->h_ratio[k] / 2.0 /dcn_bw_ceil2(v->hta_pschroma[k] / 6.0, 1.0));
1198 			}
1199 			else {
1200 				v->pscl_throughput_chroma[k] =dcn_bw_min2(v->max_dchub_topscl_throughput, v->max_pscl_tolb_throughput);
1201 			}
1202 			v->dppclk_using_single_dpp_chroma = v->pixel_clock[k] *dcn_bw_max3(v->vta_pschroma[k] / 6.0 *dcn_bw_min2(1.0, v->h_ratio[k] / 2.0), v->h_ratio[k] * v->v_ratio[k] / 4.0 / v->pscl_throughput_chroma[k], 1.0);
1203 			v->dppclk_using_single_dpp =dcn_bw_max2(v->dppclk_using_single_dpp_luma, v->dppclk_using_single_dpp_chroma);
1204 		}
1205 		if (v->odm_capable == dcn_bw_yes) {
1206 			v->dispclk_with_ramping =dcn_bw_max2(v->dispclk_with_ramping,dcn_bw_max2(v->dppclk_using_single_dpp / v->dpp_per_plane[k] * v->dispclk_dppclk_ratio, v->pixel_clock[k] / v->dpp_per_plane[k]) * (1.0 + v->downspreading / 100.0) * (1.0 + v->dispclk_ramping_margin / 100.0));
1207 			v->dispclk_without_ramping =dcn_bw_max2(v->dispclk_without_ramping,dcn_bw_max2(v->dppclk_using_single_dpp / v->dpp_per_plane[k] * v->dispclk_dppclk_ratio, v->pixel_clock[k] / v->dpp_per_plane[k]) * (1.0 + v->downspreading / 100.0));
1208 		}
1209 		else {
1210 			v->dispclk_with_ramping =dcn_bw_max2(v->dispclk_with_ramping,dcn_bw_max2(v->dppclk_using_single_dpp / v->dpp_per_plane[k] * v->dispclk_dppclk_ratio, v->pixel_clock[k]) * (1.0 + v->downspreading / 100.0) * (1.0 + v->dispclk_ramping_margin / 100.0));
1211 			v->dispclk_without_ramping =dcn_bw_max2(v->dispclk_without_ramping,dcn_bw_max2(v->dppclk_using_single_dpp / v->dpp_per_plane[k] * v->dispclk_dppclk_ratio, v->pixel_clock[k]) * (1.0 + v->downspreading / 100.0));
1212 		}
1213 	}
1214 	if (v->dispclk_without_ramping > v->max_dispclk[number_of_states]) {
1215 		v->dispclk = v->dispclk_without_ramping;
1216 	}
1217 	else if (v->dispclk_with_ramping > v->max_dispclk[number_of_states]) {
1218 		v->dispclk = v->max_dispclk[number_of_states];
1219 	}
1220 	else {
1221 		v->dispclk = v->dispclk_with_ramping;
1222 	}
1223 	v->dppclk = v->dispclk / v->dispclk_dppclk_ratio;
1224 	/*urgent watermark*/
1225 
1226 	v->return_bandwidth_to_dcn =dcn_bw_min2(v->return_bus_width * v->dcfclk, v->fabric_and_dram_bandwidth * 1000.0 * v->percent_of_ideal_drambw_received_after_urg_latency / 100.0);
1227 	v->dcc_enabled_any_plane = dcn_bw_no;
1228 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1229 		if (v->dcc_enable[k] == dcn_bw_yes) {
1230 			v->dcc_enabled_any_plane = dcn_bw_yes;
1231 		}
1232 	}
1233 	v->return_bw = v->return_bandwidth_to_dcn;
1234 	if (v->dcc_enabled_any_plane == dcn_bw_yes && v->return_bandwidth_to_dcn > v->dcfclk * v->return_bus_width / 4.0) {
1235 		v->return_bw =dcn_bw_min2(v->return_bw, v->return_bandwidth_to_dcn * 4.0 * (1.0 - v->urgent_latency / ((v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 / (v->return_bandwidth_to_dcn - v->dcfclk * v->return_bus_width / 4.0) + v->urgent_latency)));
1236 	}
1237 	v->critical_compression = 2.0 * v->return_bus_width * v->dcfclk * v->urgent_latency / (v->return_bandwidth_to_dcn * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0);
1238 	if (v->dcc_enabled_any_plane == dcn_bw_yes && v->critical_compression > 1.0 && v->critical_compression < 4.0) {
1239 		v->return_bw =dcn_bw_min2(v->return_bw, dcn_bw_pow(4.0 * v->return_bandwidth_to_dcn * (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 * v->return_bus_width * v->dcfclk * v->urgent_latency / (v->return_bandwidth_to_dcn * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0), 2));
1240 	}
1241 	v->return_bandwidth_to_dcn =dcn_bw_min2(v->return_bus_width * v->dcfclk, v->fabric_and_dram_bandwidth * 1000.0);
1242 	if (v->dcc_enabled_any_plane == dcn_bw_yes && v->return_bandwidth_to_dcn > v->dcfclk * v->return_bus_width / 4.0) {
1243 		v->return_bw =dcn_bw_min2(v->return_bw, v->return_bandwidth_to_dcn * 4.0 * (1.0 - v->urgent_latency / ((v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 / (v->return_bandwidth_to_dcn - v->dcfclk * v->return_bus_width / 4.0) + v->urgent_latency)));
1244 	}
1245 	v->critical_compression = 2.0 * v->return_bus_width * v->dcfclk * v->urgent_latency / (v->return_bandwidth_to_dcn * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0);
1246 	if (v->dcc_enabled_any_plane == dcn_bw_yes && v->critical_compression > 1.0 && v->critical_compression < 4.0) {
1247 		v->return_bw =dcn_bw_min2(v->return_bw, dcn_bw_pow(4.0 * v->return_bandwidth_to_dcn * (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0 * v->return_bus_width * v->dcfclk * v->urgent_latency / (v->return_bandwidth_to_dcn * v->urgent_latency + (v->rob_buffer_size_in_kbyte - v->pixel_chunk_size_in_kbyte) * 1024.0), 2));
1248 	}
1249 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1250 		if (v->source_scan[k] == dcn_bw_hor) {
1251 			v->swath_width_y[k] = v->viewport_width[k] / v->dpp_per_plane[k];
1252 		}
1253 		else {
1254 			v->swath_width_y[k] = v->viewport_height[k] / v->dpp_per_plane[k];
1255 		}
1256 	}
1257 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1258 		if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
1259 			v->byte_per_pixel_dety[k] = 8.0;
1260 			v->byte_per_pixel_detc[k] = 0.0;
1261 		}
1262 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_32) {
1263 			v->byte_per_pixel_dety[k] = 4.0;
1264 			v->byte_per_pixel_detc[k] = 0.0;
1265 		}
1266 		else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_16) {
1267 			v->byte_per_pixel_dety[k] = 2.0;
1268 			v->byte_per_pixel_detc[k] = 0.0;
1269 		}
1270 		else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
1271 			v->byte_per_pixel_dety[k] = 1.0;
1272 			v->byte_per_pixel_detc[k] = 2.0;
1273 		}
1274 		else {
1275 			v->byte_per_pixel_dety[k] = 4.0f / 3.0f;
1276 			v->byte_per_pixel_detc[k] = 8.0f / 3.0f;
1277 		}
1278 	}
1279 	v->total_data_read_bandwidth = 0.0;
1280 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1281 		v->read_bandwidth_plane_luma[k] = v->swath_width_y[k] * v->dpp_per_plane[k] *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / (v->htotal[k] / v->pixel_clock[k]) * v->v_ratio[k];
1282 		v->read_bandwidth_plane_chroma[k] = v->swath_width_y[k] / 2.0 * v->dpp_per_plane[k] *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / (v->htotal[k] / v->pixel_clock[k]) * v->v_ratio[k] / 2.0;
1283 		v->total_data_read_bandwidth = v->total_data_read_bandwidth + v->read_bandwidth_plane_luma[k] + v->read_bandwidth_plane_chroma[k];
1284 	}
1285 	v->total_active_dpp = 0.0;
1286 	v->total_dcc_active_dpp = 0.0;
1287 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1288 		v->total_active_dpp = v->total_active_dpp + v->dpp_per_plane[k];
1289 		if (v->dcc_enable[k] == dcn_bw_yes) {
1290 			v->total_dcc_active_dpp = v->total_dcc_active_dpp + v->dpp_per_plane[k];
1291 		}
1292 	}
1293 	v->urgent_round_trip_and_out_of_order_latency = (v->round_trip_ping_latency_cycles + 32.0) / v->dcfclk + v->urgent_out_of_order_return_per_channel * v->number_of_channels / v->return_bw;
1294 	v->last_pixel_of_line_extra_watermark = 0.0;
1295 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1296 		if (v->v_ratio[k] <= 1.0) {
1297 			v->display_pipe_line_delivery_time_luma[k] = v->swath_width_y[k] * v->dpp_per_plane[k] / v->h_ratio[k] / v->pixel_clock[k];
1298 		}
1299 		else {
1300 			v->display_pipe_line_delivery_time_luma[k] = v->swath_width_y[k] / v->pscl_throughput[k] / v->dppclk;
1301 		}
1302 		v->data_fabric_line_delivery_time_luma = v->swath_width_y[k] * v->swath_height_y[k] *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / (v->return_bw * v->read_bandwidth_plane_luma[k] / v->dpp_per_plane[k] / v->total_data_read_bandwidth);
1303 		v->last_pixel_of_line_extra_watermark =dcn_bw_max2(v->last_pixel_of_line_extra_watermark, v->data_fabric_line_delivery_time_luma - v->display_pipe_line_delivery_time_luma[k]);
1304 		if (v->byte_per_pixel_detc[k] == 0.0) {
1305 			v->display_pipe_line_delivery_time_chroma[k] = 0.0;
1306 		}
1307 		else {
1308 			if (v->v_ratio[k] / 2.0 <= 1.0) {
1309 				v->display_pipe_line_delivery_time_chroma[k] = v->swath_width_y[k] / 2.0 * v->dpp_per_plane[k] / (v->h_ratio[k] / 2.0) / v->pixel_clock[k];
1310 			}
1311 			else {
1312 				v->display_pipe_line_delivery_time_chroma[k] = v->swath_width_y[k] / 2.0 / v->pscl_throughput_chroma[k] / v->dppclk;
1313 			}
1314 			v->data_fabric_line_delivery_time_chroma = v->swath_width_y[k] / 2.0 * v->swath_height_c[k] *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / (v->return_bw * v->read_bandwidth_plane_chroma[k] / v->dpp_per_plane[k] / v->total_data_read_bandwidth);
1315 			v->last_pixel_of_line_extra_watermark =dcn_bw_max2(v->last_pixel_of_line_extra_watermark, v->data_fabric_line_delivery_time_chroma - v->display_pipe_line_delivery_time_chroma[k]);
1316 		}
1317 	}
1318 	v->urgent_extra_latency = v->urgent_round_trip_and_out_of_order_latency + (v->total_active_dpp * v->pixel_chunk_size_in_kbyte + v->total_dcc_active_dpp * v->meta_chunk_size) * 1024.0 / v->return_bw;
1319 	if (v->pte_enable == dcn_bw_yes) {
1320 		v->urgent_extra_latency = v->urgent_extra_latency + v->total_active_dpp * v->pte_chunk_size * 1024.0 / v->return_bw;
1321 	}
1322 	v->urgent_watermark = v->urgent_latency + v->last_pixel_of_line_extra_watermark + v->urgent_extra_latency;
1323 	v->ptemeta_urgent_watermark = v->urgent_watermark + 2.0 * v->urgent_latency;
1324 	/*nb p-state/dram clock change watermark*/
1325 
1326 	v->dram_clock_change_watermark = v->dram_clock_change_latency + v->urgent_watermark;
1327 	v->total_active_writeback = 0.0;
1328 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1329 		if (v->output[k] == dcn_bw_writeback) {
1330 			v->total_active_writeback = v->total_active_writeback + 1.0;
1331 		}
1332 	}
1333 	if (v->total_active_writeback <= 1.0) {
1334 		v->writeback_dram_clock_change_watermark = v->dram_clock_change_latency + v->write_back_latency;
1335 	}
1336 	else {
1337 		v->writeback_dram_clock_change_watermark = v->dram_clock_change_latency + v->write_back_latency + v->writeback_chunk_size * 1024.0 / 32.0 / v->socclk;
1338 	}
1339 	/*stutter efficiency*/
1340 
1341 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1342 		v->lines_in_dety[k] = v->det_buffer_size_y[k] / v->byte_per_pixel_dety[k] / v->swath_width_y[k];
1343 		v->lines_in_dety_rounded_down_to_swath[k] =dcn_bw_floor2(v->lines_in_dety[k], v->swath_height_y[k]);
1344 		v->full_det_buffering_time_y[k] = v->lines_in_dety_rounded_down_to_swath[k] * (v->htotal[k] / v->pixel_clock[k]) / v->v_ratio[k];
1345 		if (v->byte_per_pixel_detc[k] > 0.0) {
1346 			v->lines_in_detc[k] = v->det_buffer_size_c[k] / v->byte_per_pixel_detc[k] / (v->swath_width_y[k] / 2.0);
1347 			v->lines_in_detc_rounded_down_to_swath[k] =dcn_bw_floor2(v->lines_in_detc[k], v->swath_height_c[k]);
1348 			v->full_det_buffering_time_c[k] = v->lines_in_detc_rounded_down_to_swath[k] * (v->htotal[k] / v->pixel_clock[k]) / (v->v_ratio[k] / 2.0);
1349 		}
1350 		else {
1351 			v->lines_in_detc[k] = 0.0;
1352 			v->lines_in_detc_rounded_down_to_swath[k] = 0.0;
1353 			v->full_det_buffering_time_c[k] = 999999.0;
1354 		}
1355 	}
1356 	v->min_full_det_buffering_time = 999999.0;
1357 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1358 		if (v->full_det_buffering_time_y[k] < v->min_full_det_buffering_time) {
1359 			v->min_full_det_buffering_time = v->full_det_buffering_time_y[k];
1360 			v->frame_time_for_min_full_det_buffering_time = v->vtotal[k] * v->htotal[k] / v->pixel_clock[k];
1361 		}
1362 		if (v->full_det_buffering_time_c[k] < v->min_full_det_buffering_time) {
1363 			v->min_full_det_buffering_time = v->full_det_buffering_time_c[k];
1364 			v->frame_time_for_min_full_det_buffering_time = v->vtotal[k] * v->htotal[k] / v->pixel_clock[k];
1365 		}
1366 	}
1367 	v->average_read_bandwidth_gbyte_per_second = 0.0;
1368 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1369 		if (v->dcc_enable[k] == dcn_bw_yes) {
1370 			v->average_read_bandwidth_gbyte_per_second = v->average_read_bandwidth_gbyte_per_second + v->read_bandwidth_plane_luma[k] / v->dcc_rate[k] / 1000.0 + v->read_bandwidth_plane_chroma[k] / v->dcc_rate[k] / 1000.0;
1371 		}
1372 		else {
1373 			v->average_read_bandwidth_gbyte_per_second = v->average_read_bandwidth_gbyte_per_second + v->read_bandwidth_plane_luma[k] / 1000.0 + v->read_bandwidth_plane_chroma[k] / 1000.0;
1374 		}
1375 		if (v->dcc_enable[k] == dcn_bw_yes) {
1376 			v->average_read_bandwidth_gbyte_per_second = v->average_read_bandwidth_gbyte_per_second + v->read_bandwidth_plane_luma[k] / 1000.0 / 256.0 + v->read_bandwidth_plane_chroma[k] / 1000.0 / 256.0;
1377 		}
1378 		if (v->pte_enable == dcn_bw_yes) {
1379 			v->average_read_bandwidth_gbyte_per_second = v->average_read_bandwidth_gbyte_per_second + v->read_bandwidth_plane_luma[k] / 1000.0 / 512.0 + v->read_bandwidth_plane_chroma[k] / 1000.0 / 512.0;
1380 		}
1381 	}
1382 	v->part_of_burst_that_fits_in_rob =dcn_bw_min2(v->min_full_det_buffering_time * v->total_data_read_bandwidth, v->rob_buffer_size_in_kbyte * 1024.0 * v->total_data_read_bandwidth / (v->average_read_bandwidth_gbyte_per_second * 1000.0));
1383 	v->stutter_burst_time = v->part_of_burst_that_fits_in_rob * (v->average_read_bandwidth_gbyte_per_second * 1000.0) / v->total_data_read_bandwidth / v->return_bw + (v->min_full_det_buffering_time * v->total_data_read_bandwidth - v->part_of_burst_that_fits_in_rob) / (v->dcfclk * 64.0);
1384 	if (v->total_active_writeback == 0.0) {
1385 		v->stutter_efficiency_not_including_vblank = (1.0 - (v->sr_exit_time + v->stutter_burst_time) / v->min_full_det_buffering_time) * 100.0;
1386 	}
1387 	else {
1388 		v->stutter_efficiency_not_including_vblank = 0.0;
1389 	}
1390 	v->smallest_vblank = 999999.0;
1391 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1392 		if (v->synchronized_vblank == dcn_bw_yes || v->number_of_active_planes == 1) {
1393 			v->v_blank_time = (v->vtotal[k] - v->vactive[k]) * v->htotal[k] / v->pixel_clock[k];
1394 		}
1395 		else {
1396 			v->v_blank_time = 0.0;
1397 		}
1398 		v->smallest_vblank =dcn_bw_min2(v->smallest_vblank, v->v_blank_time);
1399 	}
1400 	v->stutter_efficiency = (v->stutter_efficiency_not_including_vblank / 100.0 * (v->frame_time_for_min_full_det_buffering_time - v->smallest_vblank) + v->smallest_vblank) / v->frame_time_for_min_full_det_buffering_time * 100.0;
1401 	/*dcfclk deep sleep*/
1402 
1403 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1404 		if (v->byte_per_pixel_detc[k] > 0.0) {
1405 			v->dcfclk_deep_sleep_per_plane[k] =dcn_bw_max2(1.1 * v->swath_width_y[k] *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / 32.0 / v->display_pipe_line_delivery_time_luma[k], 1.1 * v->swath_width_y[k] / 2.0 *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / 32.0 / v->display_pipe_line_delivery_time_chroma[k]);
1406 		}
1407 		else {
1408 			v->dcfclk_deep_sleep_per_plane[k] = 1.1 * v->swath_width_y[k] *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / 64.0 / v->display_pipe_line_delivery_time_luma[k];
1409 		}
1410 		v->dcfclk_deep_sleep_per_plane[k] =dcn_bw_max2(v->dcfclk_deep_sleep_per_plane[k], v->pixel_clock[k] / 16.0);
1411 	}
1412 	v->dcf_clk_deep_sleep = 8.0;
1413 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1414 		v->dcf_clk_deep_sleep =dcn_bw_max2(v->dcf_clk_deep_sleep, v->dcfclk_deep_sleep_per_plane[k]);
1415 	}
1416 	/*stutter watermark*/
1417 
1418 	v->stutter_exit_watermark = v->sr_exit_time + v->last_pixel_of_line_extra_watermark + v->urgent_extra_latency + 10.0 / v->dcf_clk_deep_sleep;
1419 	v->stutter_enter_plus_exit_watermark = v->sr_enter_plus_exit_time + v->last_pixel_of_line_extra_watermark + v->urgent_extra_latency;
1420 	/*urgent latency supported*/
1421 
1422 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1423 		v->effective_det_plus_lb_lines_luma =dcn_bw_floor2(v->lines_in_dety[k] +dcn_bw_min2(v->lines_in_dety[k] * v->dppclk * v->byte_per_pixel_dety[k] * v->pscl_throughput[k] / (v->return_bw / v->dpp_per_plane[k]), v->effective_lb_latency_hiding_source_lines_luma), v->swath_height_y[k]);
1424 		v->urgent_latency_support_us_luma = v->effective_det_plus_lb_lines_luma * (v->htotal[k] / v->pixel_clock[k]) / v->v_ratio[k] - v->effective_det_plus_lb_lines_luma * v->swath_width_y[k] * v->byte_per_pixel_dety[k] / (v->return_bw / v->dpp_per_plane[k]);
1425 		if (v->byte_per_pixel_detc[k] > 0.0) {
1426 			v->effective_det_plus_lb_lines_chroma =dcn_bw_floor2(v->lines_in_detc[k] +dcn_bw_min2(v->lines_in_detc[k] * v->dppclk * v->byte_per_pixel_detc[k] * v->pscl_throughput_chroma[k] / (v->return_bw / v->dpp_per_plane[k]), v->effective_lb_latency_hiding_source_lines_chroma), v->swath_height_c[k]);
1427 			v->urgent_latency_support_us_chroma = v->effective_det_plus_lb_lines_chroma * (v->htotal[k] / v->pixel_clock[k]) / (v->v_ratio[k] / 2.0) - v->effective_det_plus_lb_lines_chroma * (v->swath_width_y[k] / 2.0) * v->byte_per_pixel_detc[k] / (v->return_bw / v->dpp_per_plane[k]);
1428 			v->urgent_latency_support_us[k] =dcn_bw_min2(v->urgent_latency_support_us_luma, v->urgent_latency_support_us_chroma);
1429 		}
1430 		else {
1431 			v->urgent_latency_support_us[k] = v->urgent_latency_support_us_luma;
1432 		}
1433 	}
1434 	v->min_urgent_latency_support_us = 999999.0;
1435 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1436 		v->min_urgent_latency_support_us =dcn_bw_min2(v->min_urgent_latency_support_us, v->urgent_latency_support_us[k]);
1437 	}
1438 	/*non-urgent latency tolerance*/
1439 
1440 	v->non_urgent_latency_tolerance = v->min_urgent_latency_support_us - v->urgent_watermark;
1441 	/*prefetch*/
1442 
1443 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1444 		if ((v->source_pixel_format[k] == dcn_bw_rgb_sub_64 || v->source_pixel_format[k] == dcn_bw_rgb_sub_32 || v->source_pixel_format[k] == dcn_bw_rgb_sub_16)) {
1445 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1446 				v->block_height256_bytes_y = 1.0;
1447 			}
1448 			else if (v->source_pixel_format[k] == dcn_bw_rgb_sub_64) {
1449 				v->block_height256_bytes_y = 4.0;
1450 			}
1451 			else {
1452 				v->block_height256_bytes_y = 8.0;
1453 			}
1454 			v->block_height256_bytes_c = 0.0;
1455 		}
1456 		else {
1457 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1458 				v->block_height256_bytes_y = 1.0;
1459 				v->block_height256_bytes_c = 1.0;
1460 			}
1461 			else if (v->source_pixel_format[k] == dcn_bw_yuv420_sub_8) {
1462 				v->block_height256_bytes_y = 16.0;
1463 				v->block_height256_bytes_c = 8.0;
1464 			}
1465 			else {
1466 				v->block_height256_bytes_y = 8.0;
1467 				v->block_height256_bytes_c = 8.0;
1468 			}
1469 		}
1470 		if (v->dcc_enable[k] == dcn_bw_yes) {
1471 			v->meta_request_width_y = 64.0 * 256.0 /dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / (8.0 * v->block_height256_bytes_y);
1472 			v->meta_surf_width_y =dcn_bw_ceil2(v->swath_width_y[k] - 1.0, v->meta_request_width_y) + v->meta_request_width_y;
1473 			v->meta_surf_height_y =dcn_bw_ceil2(v->viewport_height[k] - 1.0, 8.0 * v->block_height256_bytes_y) + 8.0 * v->block_height256_bytes_y;
1474 			if (v->pte_enable == dcn_bw_yes) {
1475 				v->meta_pte_bytes_frame_y = (dcn_bw_ceil2((v->meta_surf_width_y * v->meta_surf_height_y *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / 256.0 - 4096.0) / 8.0 / 4096.0, 1.0) + 1) * 64.0;
1476 			}
1477 			else {
1478 				v->meta_pte_bytes_frame_y = 0.0;
1479 			}
1480 			if (v->source_scan[k] == dcn_bw_hor) {
1481 				v->meta_row_byte_y = v->meta_surf_width_y * 8.0 * v->block_height256_bytes_y *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / 256.0;
1482 			}
1483 			else {
1484 				v->meta_row_byte_y = v->meta_surf_height_y * v->meta_request_width_y *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / 256.0;
1485 			}
1486 		}
1487 		else {
1488 			v->meta_pte_bytes_frame_y = 0.0;
1489 			v->meta_row_byte_y = 0.0;
1490 		}
1491 		if (v->pte_enable == dcn_bw_yes) {
1492 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1493 				v->macro_tile_size_byte_y = 256.0;
1494 				v->macro_tile_height_y = 1.0;
1495 			}
1496 			else if (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x) {
1497 				v->macro_tile_size_byte_y = 4096.0;
1498 				v->macro_tile_height_y = 4.0 * v->block_height256_bytes_y;
1499 			}
1500 			else if (v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x) {
1501 				v->macro_tile_size_byte_y = 64.0 * 1024;
1502 				v->macro_tile_height_y = 16.0 * v->block_height256_bytes_y;
1503 			}
1504 			else {
1505 				v->macro_tile_size_byte_y = 256.0 * 1024;
1506 				v->macro_tile_height_y = 32.0 * v->block_height256_bytes_y;
1507 			}
1508 			if (v->macro_tile_size_byte_y <= 65536.0) {
1509 				v->pixel_pte_req_height_y = v->macro_tile_height_y;
1510 			}
1511 			else {
1512 				v->pixel_pte_req_height_y = 16.0 * v->block_height256_bytes_y;
1513 			}
1514 			v->pixel_pte_req_width_y = 4096.0 /dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) / v->pixel_pte_req_height_y * 8;
1515 			if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1516 				v->pixel_pte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->swath_width_y[k] *dcn_bw_min2(128.0, dcn_bw_pow(2.0,dcn_bw_floor2(dcn_bw_log(v->pte_buffer_size_in_requests * v->pixel_pte_req_width_y / v->swath_width_y[k], 2.0), 1.0))) - 1.0) / v->pixel_pte_req_width_y, 1.0) + 1);
1517 			}
1518 			else if (v->source_scan[k] == dcn_bw_hor) {
1519 				v->pixel_pte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->swath_width_y[k] - 1.0) / v->pixel_pte_req_width_y, 1.0) + 1);
1520 			}
1521 			else {
1522 				v->pixel_pte_bytes_per_row_y = 64.0 * (dcn_bw_ceil2((v->viewport_height[k] - 1.0) / v->pixel_pte_req_height_y, 1.0) + 1);
1523 			}
1524 		}
1525 		else {
1526 			v->pixel_pte_bytes_per_row_y = 0.0;
1527 		}
1528 		if ((v->source_pixel_format[k] != dcn_bw_rgb_sub_64 && v->source_pixel_format[k] != dcn_bw_rgb_sub_32 && v->source_pixel_format[k] != dcn_bw_rgb_sub_16)) {
1529 			if (v->dcc_enable[k] == dcn_bw_yes) {
1530 				v->meta_request_width_c = 64.0 * 256.0 /dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / (8.0 * v->block_height256_bytes_c);
1531 				v->meta_surf_width_c =dcn_bw_ceil2(v->swath_width_y[k] / 2.0 - 1.0, v->meta_request_width_c) + v->meta_request_width_c;
1532 				v->meta_surf_height_c =dcn_bw_ceil2(v->viewport_height[k] / 2.0 - 1.0, 8.0 * v->block_height256_bytes_c) + 8.0 * v->block_height256_bytes_c;
1533 				if (v->pte_enable == dcn_bw_yes) {
1534 					v->meta_pte_bytes_frame_c = (dcn_bw_ceil2((v->meta_surf_width_c * v->meta_surf_height_c *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / 256.0 - 4096.0) / 8.0 / 4096.0, 1.0) + 1) * 64.0;
1535 				}
1536 				else {
1537 					v->meta_pte_bytes_frame_c = 0.0;
1538 				}
1539 				if (v->source_scan[k] == dcn_bw_hor) {
1540 					v->meta_row_byte_c = v->meta_surf_width_c * 8.0 * v->block_height256_bytes_c *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / 256.0;
1541 				}
1542 				else {
1543 					v->meta_row_byte_c = v->meta_surf_height_c * v->meta_request_width_c *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / 256.0;
1544 				}
1545 			}
1546 			else {
1547 				v->meta_pte_bytes_frame_c = 0.0;
1548 				v->meta_row_byte_c = 0.0;
1549 			}
1550 			if (v->pte_enable == dcn_bw_yes) {
1551 				if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1552 					v->macro_tile_size_bytes_c = 256.0;
1553 					v->macro_tile_height_c = 1.0;
1554 				}
1555 				else if (v->source_surface_mode[k] == dcn_bw_sw_4_kb_s || v->source_surface_mode[k] == dcn_bw_sw_4_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d || v->source_surface_mode[k] == dcn_bw_sw_4_kb_d_x) {
1556 					v->macro_tile_size_bytes_c = 4096.0;
1557 					v->macro_tile_height_c = 4.0 * v->block_height256_bytes_c;
1558 				}
1559 				else if (v->source_surface_mode[k] == dcn_bw_sw_64_kb_s || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_s_x || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_t || v->source_surface_mode[k] == dcn_bw_sw_64_kb_d_x) {
1560 					v->macro_tile_size_bytes_c = 64.0 * 1024;
1561 					v->macro_tile_height_c = 16.0 * v->block_height256_bytes_c;
1562 				}
1563 				else {
1564 					v->macro_tile_size_bytes_c = 256.0 * 1024;
1565 					v->macro_tile_height_c = 32.0 * v->block_height256_bytes_c;
1566 				}
1567 				if (v->macro_tile_size_bytes_c <= 65536.0) {
1568 					v->pixel_pte_req_height_c = v->macro_tile_height_c;
1569 				}
1570 				else {
1571 					v->pixel_pte_req_height_c = 16.0 * v->block_height256_bytes_c;
1572 				}
1573 				v->pixel_pte_req_width_c = 4096.0 /dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / v->pixel_pte_req_height_c * 8;
1574 				if (v->source_surface_mode[k] == dcn_bw_sw_linear) {
1575 					v->pixel_pte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->swath_width_y[k] / 2.0 * dcn_bw_min2(128.0, dcn_bw_pow(2.0,dcn_bw_floor2(dcn_bw_log(v->pte_buffer_size_in_requests * v->pixel_pte_req_width_c / (v->swath_width_y[k] / 2.0), 2.0), 1.0))) - 1.0) / v->pixel_pte_req_width_c, 1.0) + 1);
1576 				}
1577 				else if (v->source_scan[k] == dcn_bw_hor) {
1578 					v->pixel_pte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->swath_width_y[k] / 2.0 - 1.0) / v->pixel_pte_req_width_c, 1.0) + 1);
1579 				}
1580 				else {
1581 					v->pixel_pte_bytes_per_row_c = 64.0 * (dcn_bw_ceil2((v->viewport_height[k] / 2.0 - 1.0) / v->pixel_pte_req_height_c, 1.0) + 1);
1582 				}
1583 			}
1584 			else {
1585 				v->pixel_pte_bytes_per_row_c = 0.0;
1586 			}
1587 		}
1588 		else {
1589 			v->pixel_pte_bytes_per_row_c = 0.0;
1590 			v->meta_pte_bytes_frame_c = 0.0;
1591 			v->meta_row_byte_c = 0.0;
1592 		}
1593 		v->pixel_pte_bytes_per_row[k] = v->pixel_pte_bytes_per_row_y + v->pixel_pte_bytes_per_row_c;
1594 		v->meta_pte_bytes_frame[k] = v->meta_pte_bytes_frame_y + v->meta_pte_bytes_frame_c;
1595 		v->meta_row_byte[k] = v->meta_row_byte_y + v->meta_row_byte_c;
1596 		v->v_init_pre_fill_y[k] =dcn_bw_floor2((v->v_ratio[k] + v->vtaps[k] + 1.0 + v->interlace_output[k] * 0.5 * v->v_ratio[k]) / 2.0, 1.0);
1597 		v->max_num_swath_y[k] =dcn_bw_ceil2((v->v_init_pre_fill_y[k] - 1.0) / v->swath_height_y[k], 1.0) + 1;
1598 		if (v->v_init_pre_fill_y[k] > 1.0) {
1599 			v->max_partial_swath_y =dcn_bw_mod((v->v_init_pre_fill_y[k] - 2.0), v->swath_height_y[k]);
1600 		}
1601 		else {
1602 			v->max_partial_swath_y =dcn_bw_mod((v->v_init_pre_fill_y[k] + v->swath_height_y[k] - 2.0), v->swath_height_y[k]);
1603 		}
1604 		v->max_partial_swath_y =dcn_bw_max2(1.0, v->max_partial_swath_y);
1605 		v->prefetch_source_lines_y[k] = v->max_num_swath_y[k] * v->swath_height_y[k] + v->max_partial_swath_y;
1606 		if ((v->source_pixel_format[k] != dcn_bw_rgb_sub_64 && v->source_pixel_format[k] != dcn_bw_rgb_sub_32 && v->source_pixel_format[k] != dcn_bw_rgb_sub_16)) {
1607 			v->v_init_pre_fill_c[k] =dcn_bw_floor2((v->v_ratio[k] / 2.0 + v->vtaps[k] + 1.0 + v->interlace_output[k] * 0.5 * v->v_ratio[k] / 2.0) / 2.0, 1.0);
1608 			v->max_num_swath_c[k] =dcn_bw_ceil2((v->v_init_pre_fill_c[k] - 1.0) / v->swath_height_c[k], 1.0) + 1;
1609 			if (v->v_init_pre_fill_c[k] > 1.0) {
1610 				v->max_partial_swath_c =dcn_bw_mod((v->v_init_pre_fill_c[k] - 2.0), v->swath_height_c[k]);
1611 			}
1612 			else {
1613 				v->max_partial_swath_c =dcn_bw_mod((v->v_init_pre_fill_c[k] + v->swath_height_c[k] - 2.0), v->swath_height_c[k]);
1614 			}
1615 			v->max_partial_swath_c =dcn_bw_max2(1.0, v->max_partial_swath_c);
1616 		}
1617 		else {
1618 			v->max_num_swath_c[k] = 0.0;
1619 			v->max_partial_swath_c = 0.0;
1620 		}
1621 		v->prefetch_source_lines_c[k] = v->max_num_swath_c[k] * v->swath_height_c[k] + v->max_partial_swath_c;
1622 	}
1623 	v->t_calc = 24.0 / v->dcf_clk_deep_sleep;
1624 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1625 		if (v->can_vstartup_lines_exceed_vsync_plus_back_porch_lines_minus_one == dcn_bw_yes) {
1626 			v->max_vstartup_lines[k] = v->vtotal[k] - v->vactive[k] - 1.0;
1627 		}
1628 		else {
1629 			v->max_vstartup_lines[k] = v->v_sync_plus_back_porch[k] - 1.0;
1630 		}
1631 	}
1632 	v->next_prefetch_mode = 0.0;
1633 	do {
1634 		v->v_startup_lines = 13.0;
1635 		do {
1636 			v->planes_with_room_to_increase_vstartup_prefetch_bw_less_than_active_bw = dcn_bw_yes;
1637 			v->planes_with_room_to_increase_vstartup_vratio_prefetch_more_than4 = dcn_bw_no;
1638 			v->planes_with_room_to_increase_vstartup_destination_line_times_for_prefetch_less_than2 = dcn_bw_no;
1639 			v->v_ratio_prefetch_more_than4 = dcn_bw_no;
1640 			v->destination_line_times_for_prefetch_less_than2 = dcn_bw_no;
1641 			v->prefetch_mode = v->next_prefetch_mode;
1642 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1643 				v->dstx_after_scaler = 90.0 * v->pixel_clock[k] / v->dppclk + 42.0 * v->pixel_clock[k] / v->dispclk;
1644 				if (v->dpp_per_plane[k] > 1.0) {
1645 					v->dstx_after_scaler = v->dstx_after_scaler + v->scaler_rec_out_width[k] / 2.0;
1646 				}
1647 				if (v->output_format[k] == dcn_bw_420) {
1648 					v->dsty_after_scaler = 1.0;
1649 				}
1650 				else {
1651 					v->dsty_after_scaler = 0.0;
1652 				}
1653 				v->v_update_offset_pix[k] = dcn_bw_ceil2(v->htotal[k] / 4.0, 1.0);
1654 				v->total_repeater_delay_time = v->max_inter_dcn_tile_repeaters * (2.0 / v->dppclk + 3.0 / v->dispclk);
1655 				v->v_update_width_pix[k] = (14.0 / v->dcf_clk_deep_sleep + 12.0 / v->dppclk + v->total_repeater_delay_time) * v->pixel_clock[k];
1656 				v->v_ready_offset_pix[k] = dcn_bw_max2(150.0 / v->dppclk, v->total_repeater_delay_time + 20.0 / v->dcf_clk_deep_sleep + 10.0 / v->dppclk) * v->pixel_clock[k];
1657 				v->t_setup = (v->v_update_offset_pix[k] + v->v_update_width_pix[k] + v->v_ready_offset_pix[k]) / v->pixel_clock[k];
1658 				v->v_startup[k] =dcn_bw_min2(v->v_startup_lines, v->max_vstartup_lines[k]);
1659 				if (v->prefetch_mode == 0.0) {
1660 					v->t_wait =dcn_bw_max3(v->dram_clock_change_latency + v->urgent_latency, v->sr_enter_plus_exit_time, v->urgent_latency);
1661 				}
1662 				else if (v->prefetch_mode == 1.0) {
1663 					v->t_wait =dcn_bw_max2(v->sr_enter_plus_exit_time, v->urgent_latency);
1664 				}
1665 				else {
1666 					v->t_wait = v->urgent_latency;
1667 				}
1668 				v->destination_lines_for_prefetch[k] =dcn_bw_floor2(4.0 * (v->v_startup[k] - v->t_wait / (v->htotal[k] / v->pixel_clock[k]) - (v->t_calc + v->t_setup) / (v->htotal[k] / v->pixel_clock[k]) - (v->dsty_after_scaler + v->dstx_after_scaler / v->htotal[k]) + 0.125), 1.0) / 4;
1669 				if (v->destination_lines_for_prefetch[k] > 0.0) {
1670 					v->prefetch_bandwidth[k] = (v->meta_pte_bytes_frame[k] + 2.0 * v->meta_row_byte[k] + 2.0 * v->pixel_pte_bytes_per_row[k] + v->prefetch_source_lines_y[k] * v->swath_width_y[k] *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) + v->prefetch_source_lines_c[k] * v->swath_width_y[k] / 2.0 *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0)) / (v->destination_lines_for_prefetch[k] * v->htotal[k] / v->pixel_clock[k]);
1671 				}
1672 				else {
1673 					v->prefetch_bandwidth[k] = 999999.0;
1674 				}
1675 			}
1676 			v->bandwidth_available_for_immediate_flip = v->return_bw;
1677 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1678 				v->bandwidth_available_for_immediate_flip = v->bandwidth_available_for_immediate_flip -dcn_bw_max2(v->read_bandwidth_plane_luma[k] + v->read_bandwidth_plane_chroma[k], v->prefetch_bandwidth[k]);
1679 			}
1680 			v->tot_immediate_flip_bytes = 0.0;
1681 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1682 				if (v->immediate_flip_supported == dcn_bw_yes && (v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
1683 					v->tot_immediate_flip_bytes = v->tot_immediate_flip_bytes + v->meta_pte_bytes_frame[k] + v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k];
1684 				}
1685 			}
1686 			v->max_rd_bandwidth = 0.0;
1687 			for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1688 				if (v->pte_enable == dcn_bw_yes && v->dcc_enable[k] == dcn_bw_yes) {
1689 					if (v->immediate_flip_supported == dcn_bw_yes && (v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
1690 						v->time_for_fetching_meta_pte =dcn_bw_max5(v->meta_pte_bytes_frame[k] / v->prefetch_bandwidth[k], v->meta_pte_bytes_frame[k] * v->tot_immediate_flip_bytes / (v->bandwidth_available_for_immediate_flip * (v->meta_pte_bytes_frame[k] + v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k])), v->urgent_extra_latency, v->urgent_latency, v->htotal[k] / v->pixel_clock[k] / 4.0);
1691 					}
1692 					else {
1693 						v->time_for_fetching_meta_pte =dcn_bw_max3(v->meta_pte_bytes_frame[k] / v->prefetch_bandwidth[k], v->urgent_extra_latency, v->htotal[k] / v->pixel_clock[k] / 4.0);
1694 					}
1695 				}
1696 				else {
1697 					v->time_for_fetching_meta_pte = v->htotal[k] / v->pixel_clock[k] / 4.0;
1698 				}
1699 				v->destination_lines_to_request_vm_inv_blank[k] =dcn_bw_floor2(4.0 * (v->time_for_fetching_meta_pte / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
1700 				if ((v->pte_enable == dcn_bw_yes || v->dcc_enable[k] == dcn_bw_yes)) {
1701 					if (v->immediate_flip_supported == dcn_bw_yes && (v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
1702 						v->time_for_fetching_row_in_vblank =dcn_bw_max5((v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k]) / v->prefetch_bandwidth[k], (v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k]) * v->tot_immediate_flip_bytes / (v->bandwidth_available_for_immediate_flip * (v->meta_pte_bytes_frame[k] + v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k])), v->urgent_extra_latency, 2.0 * v->urgent_latency, v->htotal[k] / v->pixel_clock[k] - v->time_for_fetching_meta_pte);
1703 					}
1704 					else {
1705 						v->time_for_fetching_row_in_vblank =dcn_bw_max3((v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k]) / v->prefetch_bandwidth[k], v->urgent_extra_latency, v->htotal[k] / v->pixel_clock[k] - v->time_for_fetching_meta_pte);
1706 					}
1707 				}
1708 				else {
1709 					v->time_for_fetching_row_in_vblank =dcn_bw_max2(v->urgent_extra_latency - v->time_for_fetching_meta_pte, v->htotal[k] / v->pixel_clock[k] - v->time_for_fetching_meta_pte);
1710 				}
1711 				v->destination_lines_to_request_row_in_vblank[k] =dcn_bw_floor2(4.0 * (v->time_for_fetching_row_in_vblank / (v->htotal[k] / v->pixel_clock[k]) + 0.125), 1.0) / 4;
1712 				v->lines_to_request_prefetch_pixel_data = v->destination_lines_for_prefetch[k] - v->destination_lines_to_request_vm_inv_blank[k] - v->destination_lines_to_request_row_in_vblank[k];
1713 				if (v->lines_to_request_prefetch_pixel_data > 0.0) {
1714 					v->v_ratio_prefetch_y[k] = v->prefetch_source_lines_y[k] / v->lines_to_request_prefetch_pixel_data;
1715 					if ((v->swath_height_y[k] > 4.0)) {
1716 						if (v->lines_to_request_prefetch_pixel_data > (v->v_init_pre_fill_y[k] - 3.0) / 2.0) {
1717 							v->v_ratio_prefetch_y[k] =dcn_bw_max2(v->v_ratio_prefetch_y[k], v->max_num_swath_y[k] * v->swath_height_y[k] / (v->lines_to_request_prefetch_pixel_data - (v->v_init_pre_fill_y[k] - 3.0) / 2.0));
1718 						}
1719 						else {
1720 							v->v_ratio_prefetch_y[k] = 999999.0;
1721 						}
1722 					}
1723 				}
1724 				else {
1725 					v->v_ratio_prefetch_y[k] = 999999.0;
1726 				}
1727 				v->v_ratio_prefetch_y[k] =dcn_bw_max2(v->v_ratio_prefetch_y[k], 1.0);
1728 				if (v->lines_to_request_prefetch_pixel_data > 0.0) {
1729 					v->v_ratio_prefetch_c[k] = v->prefetch_source_lines_c[k] / v->lines_to_request_prefetch_pixel_data;
1730 					if ((v->swath_height_c[k] > 4.0)) {
1731 						if (v->lines_to_request_prefetch_pixel_data > (v->v_init_pre_fill_c[k] - 3.0) / 2.0) {
1732 							v->v_ratio_prefetch_c[k] =dcn_bw_max2(v->v_ratio_prefetch_c[k], v->max_num_swath_c[k] * v->swath_height_c[k] / (v->lines_to_request_prefetch_pixel_data - (v->v_init_pre_fill_c[k] - 3.0) / 2.0));
1733 						}
1734 						else {
1735 							v->v_ratio_prefetch_c[k] = 999999.0;
1736 						}
1737 					}
1738 				}
1739 				else {
1740 					v->v_ratio_prefetch_c[k] = 999999.0;
1741 				}
1742 				v->v_ratio_prefetch_c[k] =dcn_bw_max2(v->v_ratio_prefetch_c[k], 1.0);
1743 				if (v->lines_to_request_prefetch_pixel_data > 0.0) {
1744 					v->required_prefetch_pix_data_bw = v->dpp_per_plane[k] * (v->prefetch_source_lines_y[k] / v->lines_to_request_prefetch_pixel_data *dcn_bw_ceil2(v->byte_per_pixel_dety[k], 1.0) + v->prefetch_source_lines_c[k] / v->lines_to_request_prefetch_pixel_data *dcn_bw_ceil2(v->byte_per_pixel_detc[k], 2.0) / 2.0) * v->swath_width_y[k] / (v->htotal[k] / v->pixel_clock[k]);
1745 				}
1746 				else {
1747 					v->required_prefetch_pix_data_bw = 999999.0;
1748 				}
1749 				v->max_rd_bandwidth = v->max_rd_bandwidth +dcn_bw_max2(v->read_bandwidth_plane_luma[k] + v->read_bandwidth_plane_chroma[k], v->required_prefetch_pix_data_bw);
1750 				if (v->immediate_flip_supported == dcn_bw_yes && (v->source_pixel_format[k] != dcn_bw_yuv420_sub_8 && v->source_pixel_format[k] != dcn_bw_yuv420_sub_10)) {
1751 					v->max_rd_bandwidth = v->max_rd_bandwidth +dcn_bw_max2(v->meta_pte_bytes_frame[k] / (v->destination_lines_to_request_vm_inv_blank[k] * v->htotal[k] / v->pixel_clock[k]), (v->meta_row_byte[k] + v->pixel_pte_bytes_per_row[k]) / (v->destination_lines_to_request_row_in_vblank[k] * v->htotal[k] / v->pixel_clock[k]));
1752 				}
1753 				if (v->v_ratio_prefetch_y[k] > 4.0 || v->v_ratio_prefetch_c[k] > 4.0) {
1754 					v->v_ratio_prefetch_more_than4 = dcn_bw_yes;
1755 				}
1756 				if (v->destination_lines_for_prefetch[k] < 2.0) {
1757 					v->destination_line_times_for_prefetch_less_than2 = dcn_bw_yes;
1758 				}
1759 				if (v->max_vstartup_lines[k] > v->v_startup_lines) {
1760 					if (v->required_prefetch_pix_data_bw > (v->read_bandwidth_plane_luma[k] + v->read_bandwidth_plane_chroma[k])) {
1761 						v->planes_with_room_to_increase_vstartup_prefetch_bw_less_than_active_bw = dcn_bw_no;
1762 					}
1763 					if (v->v_ratio_prefetch_y[k] > 4.0 || v->v_ratio_prefetch_c[k] > 4.0) {
1764 						v->planes_with_room_to_increase_vstartup_vratio_prefetch_more_than4 = dcn_bw_yes;
1765 					}
1766 					if (v->destination_lines_for_prefetch[k] < 2.0) {
1767 						v->planes_with_room_to_increase_vstartup_destination_line_times_for_prefetch_less_than2 = dcn_bw_yes;
1768 					}
1769 				}
1770 			}
1771 			if (v->max_rd_bandwidth <= v->return_bw && v->v_ratio_prefetch_more_than4 == dcn_bw_no && v->destination_line_times_for_prefetch_less_than2 == dcn_bw_no) {
1772 				v->prefetch_mode_supported = dcn_bw_yes;
1773 			}
1774 			else {
1775 				v->prefetch_mode_supported = dcn_bw_no;
1776 			}
1777 			v->v_startup_lines = v->v_startup_lines + 1.0;
1778 		} while (!(v->prefetch_mode_supported == dcn_bw_yes || (v->planes_with_room_to_increase_vstartup_prefetch_bw_less_than_active_bw == dcn_bw_yes && v->planes_with_room_to_increase_vstartup_vratio_prefetch_more_than4 == dcn_bw_no && v->planes_with_room_to_increase_vstartup_destination_line_times_for_prefetch_less_than2 == dcn_bw_no)));
1779 		v->next_prefetch_mode = v->next_prefetch_mode + 1.0;
1780 	} while (!(v->prefetch_mode_supported == dcn_bw_yes || v->prefetch_mode == 2.0));
1781 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1782 		if (v->v_ratio_prefetch_y[k] <= 1.0) {
1783 			v->display_pipe_line_delivery_time_luma_prefetch[k] = v->swath_width_y[k] * v->dpp_per_plane[k] / v->h_ratio[k] / v->pixel_clock[k];
1784 		}
1785 		else {
1786 			v->display_pipe_line_delivery_time_luma_prefetch[k] = v->swath_width_y[k] / v->pscl_throughput[k] / v->dppclk;
1787 		}
1788 		if (v->byte_per_pixel_detc[k] == 0.0) {
1789 			v->display_pipe_line_delivery_time_chroma_prefetch[k] = 0.0;
1790 		}
1791 		else {
1792 			if (v->v_ratio_prefetch_c[k] <= 1.0) {
1793 				v->display_pipe_line_delivery_time_chroma_prefetch[k] = v->swath_width_y[k] * v->dpp_per_plane[k] / v->h_ratio[k] / v->pixel_clock[k];
1794 			}
1795 			else {
1796 				v->display_pipe_line_delivery_time_chroma_prefetch[k] = v->swath_width_y[k] / v->pscl_throughput[k] / v->dppclk;
1797 			}
1798 		}
1799 	}
1800 	/*min ttuv_blank*/
1801 
1802 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1803 		if (v->prefetch_mode == 0.0) {
1804 			v->allow_dram_clock_change_during_vblank[k] = dcn_bw_yes;
1805 			v->allow_dram_self_refresh_during_vblank[k] = dcn_bw_yes;
1806 			v->min_ttuv_blank[k] = v->t_calc +dcn_bw_max3(v->dram_clock_change_watermark, v->stutter_enter_plus_exit_watermark, v->urgent_watermark);
1807 		}
1808 		else if (v->prefetch_mode == 1.0) {
1809 			v->allow_dram_clock_change_during_vblank[k] = dcn_bw_no;
1810 			v->allow_dram_self_refresh_during_vblank[k] = dcn_bw_yes;
1811 			v->min_ttuv_blank[k] = v->t_calc +dcn_bw_max2(v->stutter_enter_plus_exit_watermark, v->urgent_watermark);
1812 		}
1813 		else {
1814 			v->allow_dram_clock_change_during_vblank[k] = dcn_bw_no;
1815 			v->allow_dram_self_refresh_during_vblank[k] = dcn_bw_no;
1816 			v->min_ttuv_blank[k] = v->t_calc + v->urgent_watermark;
1817 		}
1818 	}
1819 	/*nb p-state/dram clock change support*/
1820 
1821 	v->active_dp_ps = 0.0;
1822 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1823 		v->active_dp_ps = v->active_dp_ps + v->dpp_per_plane[k];
1824 	}
1825 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1826 		v->lb_latency_hiding_source_lines_y =dcn_bw_min2(v->max_line_buffer_lines,dcn_bw_floor2(v->line_buffer_size / v->lb_bit_per_pixel[k] / (v->swath_width_y[k] /dcn_bw_max2(v->h_ratio[k], 1.0)), 1.0)) - (v->vtaps[k] - 1.0);
1827 		v->lb_latency_hiding_source_lines_c =dcn_bw_min2(v->max_line_buffer_lines,dcn_bw_floor2(v->line_buffer_size / v->lb_bit_per_pixel[k] / (v->swath_width_y[k] / 2.0 /dcn_bw_max2(v->h_ratio[k] / 2.0, 1.0)), 1.0)) - (v->vta_pschroma[k] - 1.0);
1828 		v->effective_lb_latency_hiding_y = v->lb_latency_hiding_source_lines_y / v->v_ratio[k] * (v->htotal[k] / v->pixel_clock[k]);
1829 		v->effective_lb_latency_hiding_c = v->lb_latency_hiding_source_lines_c / (v->v_ratio[k] / 2.0) * (v->htotal[k] / v->pixel_clock[k]);
1830 		if (v->swath_width_y[k] > 2.0 * v->dpp_output_buffer_pixels) {
1831 			v->dpp_output_buffer_lines_y = v->dpp_output_buffer_pixels / v->swath_width_y[k];
1832 		}
1833 		else if (v->swath_width_y[k] > v->dpp_output_buffer_pixels) {
1834 			v->dpp_output_buffer_lines_y = 0.5;
1835 		}
1836 		else {
1837 			v->dpp_output_buffer_lines_y = 1.0;
1838 		}
1839 		if (v->swath_width_y[k] / 2.0 > 2.0 * v->dpp_output_buffer_pixels) {
1840 			v->dpp_output_buffer_lines_c = v->dpp_output_buffer_pixels / (v->swath_width_y[k] / 2.0);
1841 		}
1842 		else if (v->swath_width_y[k] / 2.0 > v->dpp_output_buffer_pixels) {
1843 			v->dpp_output_buffer_lines_c = 0.5;
1844 		}
1845 		else {
1846 			v->dpp_output_buffer_lines_c = 1.0;
1847 		}
1848 		v->dppopp_buffering_y = (v->htotal[k] / v->pixel_clock[k]) * (v->dpp_output_buffer_lines_y + v->opp_output_buffer_lines);
1849 		v->max_det_buffering_time_y = v->full_det_buffering_time_y[k] + (v->lines_in_dety[k] - v->lines_in_dety_rounded_down_to_swath[k]) / v->swath_height_y[k] * (v->htotal[k] / v->pixel_clock[k]);
1850 		v->active_dram_clock_change_latency_margin_y = v->dppopp_buffering_y + v->effective_lb_latency_hiding_y + v->max_det_buffering_time_y - v->dram_clock_change_watermark;
1851 		if (v->active_dp_ps > 1.0) {
1852 			v->active_dram_clock_change_latency_margin_y = v->active_dram_clock_change_latency_margin_y - (1.0 - 1.0 / (v->active_dp_ps - 1.0)) * v->swath_height_y[k] * (v->htotal[k] / v->pixel_clock[k]);
1853 		}
1854 		if (v->byte_per_pixel_detc[k] > 0.0) {
1855 			v->dppopp_buffering_c = (v->htotal[k] / v->pixel_clock[k]) * (v->dpp_output_buffer_lines_c + v->opp_output_buffer_lines);
1856 			v->max_det_buffering_time_c = v->full_det_buffering_time_c[k] + (v->lines_in_detc[k] - v->lines_in_detc_rounded_down_to_swath[k]) / v->swath_height_c[k] * (v->htotal[k] / v->pixel_clock[k]);
1857 			v->active_dram_clock_change_latency_margin_c = v->dppopp_buffering_c + v->effective_lb_latency_hiding_c + v->max_det_buffering_time_c - v->dram_clock_change_watermark;
1858 			if (v->active_dp_ps > 1.0) {
1859 				v->active_dram_clock_change_latency_margin_c = v->active_dram_clock_change_latency_margin_c - (1.0 - 1.0 / (v->active_dp_ps - 1.0)) * v->swath_height_c[k] * (v->htotal[k] / v->pixel_clock[k]);
1860 			}
1861 			v->active_dram_clock_change_latency_margin[k] =dcn_bw_min2(v->active_dram_clock_change_latency_margin_y, v->active_dram_clock_change_latency_margin_c);
1862 		}
1863 		else {
1864 			v->active_dram_clock_change_latency_margin[k] = v->active_dram_clock_change_latency_margin_y;
1865 		}
1866 		if (v->output_format[k] == dcn_bw_444) {
1867 			v->writeback_dram_clock_change_latency_margin = (v->writeback_luma_buffer_size + v->writeback_chroma_buffer_size) * 1024.0 / (v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 4.0) - v->writeback_dram_clock_change_watermark;
1868 		}
1869 		else {
1870 			v->writeback_dram_clock_change_latency_margin =dcn_bw_min2(v->writeback_luma_buffer_size, 2.0 * v->writeback_chroma_buffer_size) * 1024.0 / (v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k])) - v->writeback_dram_clock_change_watermark;
1871 		}
1872 		if (v->output[k] == dcn_bw_writeback) {
1873 			v->active_dram_clock_change_latency_margin[k] =dcn_bw_min2(v->active_dram_clock_change_latency_margin[k], v->writeback_dram_clock_change_latency_margin);
1874 		}
1875 	}
1876 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1877 		if (v->allow_dram_clock_change_during_vblank[k] == dcn_bw_yes) {
1878 			v->v_blank_dram_clock_change_latency_margin[k] = (v->vtotal[k] - v->scaler_recout_height[k]) * (v->htotal[k] / v->pixel_clock[k]) -dcn_bw_max2(v->dram_clock_change_watermark, v->writeback_dram_clock_change_watermark);
1879 		}
1880 		else {
1881 			v->v_blank_dram_clock_change_latency_margin[k] = 0.0;
1882 		}
1883 	}
1884 	v->min_active_dram_clock_change_margin = 999999.0;
1885 	v->v_blank_of_min_active_dram_clock_change_margin = 999999.0;
1886 	v->second_min_active_dram_clock_change_margin = 999999.0;
1887 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1888 		if (v->active_dram_clock_change_latency_margin[k] < v->min_active_dram_clock_change_margin) {
1889 			v->second_min_active_dram_clock_change_margin = v->min_active_dram_clock_change_margin;
1890 			v->min_active_dram_clock_change_margin = v->active_dram_clock_change_latency_margin[k];
1891 			v->v_blank_of_min_active_dram_clock_change_margin = v->v_blank_dram_clock_change_latency_margin[k];
1892 		}
1893 		else if (v->active_dram_clock_change_latency_margin[k] < v->second_min_active_dram_clock_change_margin) {
1894 			v->second_min_active_dram_clock_change_margin = v->active_dram_clock_change_latency_margin[k];
1895 		}
1896 	}
1897 	v->min_vblank_dram_clock_change_margin = 999999.0;
1898 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1899 		if (v->min_vblank_dram_clock_change_margin > v->v_blank_dram_clock_change_latency_margin[k]) {
1900 			v->min_vblank_dram_clock_change_margin = v->v_blank_dram_clock_change_latency_margin[k];
1901 		}
1902 	}
1903 	if (v->synchronized_vblank == dcn_bw_yes || v->number_of_active_planes == 1) {
1904 		v->dram_clock_change_margin =dcn_bw_max2(v->min_active_dram_clock_change_margin, v->min_vblank_dram_clock_change_margin);
1905 	}
1906 	else if (v->v_blank_of_min_active_dram_clock_change_margin > v->min_active_dram_clock_change_margin) {
1907 		v->dram_clock_change_margin =dcn_bw_min2(v->second_min_active_dram_clock_change_margin, v->v_blank_of_min_active_dram_clock_change_margin);
1908 	}
1909 	else {
1910 		v->dram_clock_change_margin = v->min_active_dram_clock_change_margin;
1911 	}
1912 	if (v->min_active_dram_clock_change_margin > 0.0) {
1913 		v->dram_clock_change_support = dcn_bw_supported_in_v_active;
1914 	}
1915 	else if (v->dram_clock_change_margin > 0.0) {
1916 		v->dram_clock_change_support = dcn_bw_supported_in_v_blank;
1917 	}
1918 	else {
1919 		v->dram_clock_change_support = dcn_bw_not_supported;
1920 	}
1921 	/*maximum bandwidth used*/
1922 
1923 	v->wr_bandwidth = 0.0;
1924 	for (k = 0; k <= v->number_of_active_planes - 1; k++) {
1925 		if (v->output[k] == dcn_bw_writeback && v->output_format[k] == dcn_bw_444) {
1926 			v->wr_bandwidth = v->wr_bandwidth + v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 4.0;
1927 		}
1928 		else if (v->output[k] == dcn_bw_writeback) {
1929 			v->wr_bandwidth = v->wr_bandwidth + v->scaler_rec_out_width[k] / (v->htotal[k] / v->pixel_clock[k]) * 1.5;
1930 		}
1931 	}
1932 	v->max_used_bw = v->max_rd_bandwidth + v->wr_bandwidth;
1933 }
1934