1/*
2 * Copyright 2022 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 "dcn32_optc.h"
27
28#include "dcn30/dcn30_optc.h"
29#include "dcn31/dcn31_optc.h"
30#include "reg_helper.h"
31#include "dc.h"
32#include "dcn_calc_math.h"
33#include "dc_dmub_srv.h"
34
35#define REG(reg)\
36 optc1->tg_regs->reg
37
38#define CTX \
39 optc1->base.ctx
40
41#undef FN
42#define FN(reg_name, field_name) \
43 optc1->tg_shift->field_name, optc1->tg_mask->field_name
44
45static void optc32_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt,
46 struct dc_crtc_timing *timing)
47{
48 struct optc *optc1 = DCN10TG_FROM_TG(optc);
49 uint32_t memory_mask = 0;
50 int h_active = timing->h_addressable + timing->h_border_left + timing->h_border_right;
51 int mpcc_hactive = h_active / opp_cnt;
52 /* Each memory instance is 2048x(32x2) bits to support half line of 4096 */
53 int odm_mem_count = (h_active + 2047) / 2048;
54
55 /*
56 * display <= 4k : 2 memories + 2 pipes
57 * 4k < display <= 8k : 4 memories + 2 pipes
58 * 8k < display <= 12k : 6 memories + 4 pipes
59 */
60 if (opp_cnt == 4) {
61 if (odm_mem_count <= 2)
62 memory_mask = 0x3;
63 else if (odm_mem_count <= 4)
64 memory_mask = 0xf;
65 else
66 memory_mask = 0x3f;
67 } else {
68 if (odm_mem_count <= 2)
69 memory_mask = 0x1 << (opp_id[0] * 2) | 0x1 << (opp_id[1] * 2);
70 else if (odm_mem_count <= 4)
71 memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2);
72 else
73 memory_mask = 0x77;
74 }
75
76 REG_SET(OPTC_MEMORY_CONFIG, 0,
77 OPTC_MEM_SEL, memory_mask);
78
79 if (opp_cnt == 2) {
80 REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0,
81 OPTC_NUM_OF_INPUT_SEGMENT, 1,
82 OPTC_SEG0_SRC_SEL, opp_id[0],
83 OPTC_SEG1_SRC_SEL, opp_id[1]);
84 } else if (opp_cnt == 4) {
85 REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
86 OPTC_NUM_OF_INPUT_SEGMENT, 3,
87 OPTC_SEG0_SRC_SEL, opp_id[0],
88 OPTC_SEG1_SRC_SEL, opp_id[1],
89 OPTC_SEG2_SRC_SEL, opp_id[2],
90 OPTC_SEG3_SRC_SEL, opp_id[3]);
91 }
92
93 REG_UPDATE(OPTC_WIDTH_CONTROL,
94 OPTC_SEGMENT_WIDTH, mpcc_hactive);
95
96 REG_UPDATE(OTG_H_TIMING_CNTL,
97 OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
98 optc1->opp_count = opp_cnt;
99}
100
101void optc32_get_odm_combine_segments(struct timing_generator *tg, int *odm_combine_segments)
102{
103 struct optc *optc1 = DCN10TG_FROM_TG(tg);
104 int segments;
105
106 REG_GET(OPTC_DATA_SOURCE_SELECT, OPTC_NUM_OF_INPUT_SEGMENT, &segments);
107
108 switch (segments) {
109 case 0:
110 *odm_combine_segments = 1;
111 break;
112 case 1:
113 *odm_combine_segments = 2;
114 break;
115 case 3:
116 *odm_combine_segments = 4;
117 break;
118 /* 2 is reserved */
119 case 2:
120 default:
121 *odm_combine_segments = -1;
122 }
123}
124
125void optc32_set_h_timing_div_manual_mode(struct timing_generator *optc, bool manual_mode)
126{
127 struct optc *optc1 = DCN10TG_FROM_TG(optc);
128
129 REG_UPDATE(OTG_H_TIMING_CNTL,
130 OTG_H_TIMING_DIV_MODE_MANUAL, manual_mode ? 1 : 0);
131}
132/**
133 * optc32_enable_crtc() - Enable CRTC - call ASIC Control Object to enable Timing generator.
134 *
135 * @optc: timing_generator instance.
136 *
137 * Return: If CRTC is enabled, return true.
138 */
139static bool optc32_enable_crtc(struct timing_generator *optc)
140{
141 struct optc *optc1 = DCN10TG_FROM_TG(optc);
142
143 /* opp instance for OTG, 1 to 1 mapping and odm will adjust */
144 REG_UPDATE(OPTC_DATA_SOURCE_SELECT,
145 OPTC_SEG0_SRC_SEL, optc->inst);
146
147 /* VTG enable first is for HW workaround */
148 REG_UPDATE(CONTROL,
149 VTG0_ENABLE, 1);
150
151 REG_SEQ_START();
152
153 /* Enable CRTC */
154 REG_UPDATE_2(OTG_CONTROL,
155 OTG_DISABLE_POINT_CNTL, 2,
156 OTG_MASTER_EN, 1);
157
158 REG_SEQ_SUBMIT();
159 REG_SEQ_WAIT_DONE();
160
161 return true;
162}
163
164/* disable_crtc */
165static bool optc32_disable_crtc(struct timing_generator *optc)
166{
167 struct optc *optc1 = DCN10TG_FROM_TG(optc);
168
169 /* disable otg request until end of the first line
170 * in the vertical blank region
171 */
172 REG_UPDATE(OTG_CONTROL,
173 OTG_MASTER_EN, 0);
174
175 REG_UPDATE(CONTROL,
176 VTG0_ENABLE, 0);
177
178 /* CRTC disabled, so disable clock. */
179 REG_WAIT(OTG_CLOCK_CONTROL,
180 OTG_BUSY, 0,
181 1, 150000);
182
183 return true;
184}
185
186static void optc32_phantom_crtc_post_enable(struct timing_generator *optc)
187{
188 struct optc *optc1 = DCN10TG_FROM_TG(optc);
189
190 /* Disable immediately. */
191 REG_UPDATE_2(OTG_CONTROL, OTG_DISABLE_POINT_CNTL, 0, OTG_MASTER_EN, 0);
192
193 /* CRTC disabled, so disable clock. */
194 REG_WAIT(OTG_CLOCK_CONTROL, OTG_BUSY, 0, 1, 100000);
195}
196
197static void optc32_disable_phantom_otg(struct timing_generator *optc)
198{
199 struct optc *optc1 = DCN10TG_FROM_TG(optc);
200
201 REG_UPDATE(OTG_CONTROL, OTG_MASTER_EN, 0);
202}
203
204void optc32_set_odm_bypass(struct timing_generator *optc,
205 const struct dc_crtc_timing *dc_crtc_timing)
206{
207 struct optc *optc1 = DCN10TG_FROM_TG(optc);
208 enum h_timing_div_mode h_div = H_TIMING_NO_DIV;
209
210 REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
211 OPTC_NUM_OF_INPUT_SEGMENT, 0,
212 OPTC_SEG0_SRC_SEL, optc->inst,
213 OPTC_SEG1_SRC_SEL, 0xf,
214 OPTC_SEG2_SRC_SEL, 0xf,
215 OPTC_SEG3_SRC_SEL, 0xf
216 );
217
218 h_div = optc1_is_two_pixels_per_containter(timing: dc_crtc_timing);
219 REG_UPDATE(OTG_H_TIMING_CNTL,
220 OTG_H_TIMING_DIV_MODE, h_div);
221
222 REG_SET(OPTC_MEMORY_CONFIG, 0,
223 OPTC_MEM_SEL, 0);
224 optc1->opp_count = 1;
225}
226
227static void optc32_setup_manual_trigger(struct timing_generator *optc)
228{
229 struct optc *optc1 = DCN10TG_FROM_TG(optc);
230 struct dc *dc = optc->ctx->dc;
231
232 if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams)
233 dc_dmub_srv_set_drr_manual_trigger_cmd(dc, tg_inst: optc->inst);
234 else {
235 /*
236 * MIN_MASK_EN is gone and MASK is now always enabled.
237 *
238 * To get it to it work with manual trigger we need to make sure
239 * we program the correct bit.
240 */
241 REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
242 OTG_V_TOTAL_MIN_SEL, 1,
243 OTG_V_TOTAL_MAX_SEL, 1,
244 OTG_FORCE_LOCK_ON_EVENT, 0,
245 OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */
246
247 // Setup manual flow control for EOF via TRIG_A
248 optc->funcs->setup_manual_trigger(optc);
249 }
250}
251
252static void optc32_set_drr(
253 struct timing_generator *optc,
254 const struct drr_params *params)
255{
256 struct optc *optc1 = DCN10TG_FROM_TG(optc);
257
258 if (params != NULL &&
259 params->vertical_total_max > 0 &&
260 params->vertical_total_min > 0) {
261
262 if (params->vertical_total_mid != 0) {
263
264 REG_SET(OTG_V_TOTAL_MID, 0,
265 OTG_V_TOTAL_MID, params->vertical_total_mid - 1);
266
267 REG_UPDATE_2(OTG_V_TOTAL_CONTROL,
268 OTG_VTOTAL_MID_REPLACING_MAX_EN, 1,
269 OTG_VTOTAL_MID_FRAME_NUM,
270 (uint8_t)params->vertical_total_mid_frame_num);
271
272 }
273
274 optc->funcs->set_vtotal_min_max(optc, params->vertical_total_min - 1, params->vertical_total_max - 1);
275 }
276
277 optc32_setup_manual_trigger(optc);
278}
279
280static struct timing_generator_funcs dcn32_tg_funcs = {
281 .validate_timing = optc1_validate_timing,
282 .program_timing = optc1_program_timing,
283 .setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
284 .setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
285 .setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
286 .program_global_sync = optc1_program_global_sync,
287 .enable_crtc = optc32_enable_crtc,
288 .disable_crtc = optc32_disable_crtc,
289 .phantom_crtc_post_enable = optc32_phantom_crtc_post_enable,
290 .disable_phantom_crtc = optc32_disable_phantom_otg,
291 /* used by enable_timing_synchronization. Not need for FPGA */
292 .is_counter_moving = optc1_is_counter_moving,
293 .get_position = optc1_get_position,
294 .get_frame_count = optc1_get_vblank_counter,
295 .get_scanoutpos = optc1_get_crtc_scanoutpos,
296 .get_otg_active_size = optc1_get_otg_active_size,
297 .set_early_control = optc1_set_early_control,
298 /* used by enable_timing_synchronization. Not need for FPGA */
299 .wait_for_state = optc1_wait_for_state,
300 .set_blank_color = optc3_program_blank_color,
301 .did_triggered_reset_occur = optc1_did_triggered_reset_occur,
302 .triplebuffer_lock = optc3_triplebuffer_lock,
303 .triplebuffer_unlock = optc2_triplebuffer_unlock,
304 .enable_reset_trigger = optc1_enable_reset_trigger,
305 .enable_crtc_reset = optc1_enable_crtc_reset,
306 .disable_reset_trigger = optc1_disable_reset_trigger,
307 .lock = optc3_lock,
308 .unlock = optc1_unlock,
309 .lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
310 .lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
311 .enable_optc_clock = optc1_enable_optc_clock,
312 .set_drr = optc32_set_drr,
313 .get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
314 .set_vtotal_min_max = optc3_set_vtotal_min_max,
315 .set_static_screen_control = optc1_set_static_screen_control,
316 .program_stereo = optc1_program_stereo,
317 .is_stereo_left_eye = optc1_is_stereo_left_eye,
318 .tg_init = optc3_tg_init,
319 .is_tg_enabled = optc1_is_tg_enabled,
320 .is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
321 .clear_optc_underflow = optc1_clear_optc_underflow,
322 .setup_global_swap_lock = NULL,
323 .get_crc = optc1_get_crc,
324 .configure_crc = optc1_configure_crc,
325 .set_dsc_config = optc3_set_dsc_config,
326 .get_dsc_status = optc2_get_dsc_status,
327 .set_dwb_source = NULL,
328 .set_odm_bypass = optc32_set_odm_bypass,
329 .set_odm_combine = optc32_set_odm_combine,
330 .get_odm_combine_segments = optc32_get_odm_combine_segments,
331 .set_h_timing_div_manual_mode = optc32_set_h_timing_div_manual_mode,
332 .get_optc_source = optc2_get_optc_source,
333 .set_out_mux = optc3_set_out_mux,
334 .set_drr_trigger_window = optc3_set_drr_trigger_window,
335 .set_vtotal_change_limit = optc3_set_vtotal_change_limit,
336 .set_gsl = optc2_set_gsl,
337 .set_gsl_source_select = optc2_set_gsl_source_select,
338 .set_vtg_params = optc1_set_vtg_params,
339 .program_manual_trigger = optc2_program_manual_trigger,
340 .setup_manual_trigger = optc2_setup_manual_trigger,
341 .get_hw_timing = optc1_get_hw_timing,
342};
343
344void dcn32_timing_generator_init(struct optc *optc1)
345{
346 optc1->base.funcs = &dcn32_tg_funcs;
347
348 optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
349 optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
350
351 optc1->min_h_blank = 32;
352 optc1->min_v_blank = 3;
353 optc1->min_v_blank_interlace = 5;
354 optc1->min_h_sync_width = 4;
355 optc1->min_v_sync_width = 1;
356}
357
358

source code of linux/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_optc.c