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 
45 static 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 
101 static void optc32_set_h_timing_div_manual_mode(struct timing_generator *optc, bool manual_mode)
102 {
103 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
104 
105 	REG_UPDATE(OTG_H_TIMING_CNTL,
106 			OTG_H_TIMING_DIV_MODE_MANUAL, manual_mode ? 1 : 0);
107 }
108 /**
109  * Enable CRTC
110  * Enable CRTC - call ASIC Control Object to enable Timing generator.
111  */
112 static bool optc32_enable_crtc(struct timing_generator *optc)
113 {
114 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
115 
116 	/* opp instance for OTG, 1 to 1 mapping and odm will adjust */
117 	REG_UPDATE(OPTC_DATA_SOURCE_SELECT,
118 			OPTC_SEG0_SRC_SEL, optc->inst);
119 
120 	/* VTG enable first is for HW workaround */
121 	REG_UPDATE(CONTROL,
122 			VTG0_ENABLE, 1);
123 
124 	REG_SEQ_START();
125 
126 	/* Enable CRTC */
127 	REG_UPDATE_2(OTG_CONTROL,
128 			OTG_DISABLE_POINT_CNTL, 2,
129 			OTG_MASTER_EN, 1);
130 
131 	REG_SEQ_SUBMIT();
132 	REG_SEQ_WAIT_DONE();
133 
134 	return true;
135 }
136 
137 /* disable_crtc */
138 static bool optc32_disable_crtc(struct timing_generator *optc)
139 {
140 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
141 
142 	/* disable otg request until end of the first line
143 	 * in the vertical blank region
144 	 */
145 	REG_UPDATE(OTG_CONTROL,
146 			OTG_MASTER_EN, 0);
147 
148 	REG_UPDATE(CONTROL,
149 			VTG0_ENABLE, 0);
150 
151 	/* CRTC disabled, so disable  clock. */
152 	REG_WAIT(OTG_CLOCK_CONTROL,
153 			OTG_BUSY, 0,
154 			1, 100000);
155 
156 	return true;
157 }
158 
159 void optc32_phantom_crtc_post_enable(struct timing_generator *optc)
160 {
161 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
162 
163 	/* Disable immediately. */
164 	REG_UPDATE_2(OTG_CONTROL, OTG_DISABLE_POINT_CNTL, 0, OTG_MASTER_EN, 0);
165 
166 	/* CRTC disabled, so disable  clock. */
167 	REG_WAIT(OTG_CLOCK_CONTROL, OTG_BUSY, 0, 1, 100000);
168 }
169 
170 static void optc32_set_odm_bypass(struct timing_generator *optc,
171 		const struct dc_crtc_timing *dc_crtc_timing)
172 {
173 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
174 	enum h_timing_div_mode h_div = H_TIMING_NO_DIV;
175 
176 	REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
177 			OPTC_NUM_OF_INPUT_SEGMENT, 0,
178 			OPTC_SEG0_SRC_SEL, optc->inst,
179 			OPTC_SEG1_SRC_SEL, 0xf,
180 			OPTC_SEG2_SRC_SEL, 0xf,
181 			OPTC_SEG3_SRC_SEL, 0xf
182 			);
183 
184 	h_div = optc1_is_two_pixels_per_containter(dc_crtc_timing);
185 	REG_UPDATE(OTG_H_TIMING_CNTL,
186 			OTG_H_TIMING_DIV_MODE, h_div);
187 
188 	REG_SET(OPTC_MEMORY_CONFIG, 0,
189 			OPTC_MEM_SEL, 0);
190 	optc1->opp_count = 1;
191 }
192 
193 void optc32_setup_manual_trigger(struct timing_generator *optc)
194 {
195 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
196 	struct dc *dc = optc->ctx->dc;
197 
198 	if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams)
199 		dc_dmub_srv_set_drr_manual_trigger_cmd(dc, optc->inst);
200 	else {
201 		/*
202 		 * MIN_MASK_EN is gone and MASK is now always enabled.
203 		 *
204 		 * To get it to it work with manual trigger we need to make sure
205 		 * we program the correct bit.
206 		 */
207 		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
208 				OTG_V_TOTAL_MIN_SEL, 1,
209 				OTG_V_TOTAL_MAX_SEL, 1,
210 				OTG_FORCE_LOCK_ON_EVENT, 0,
211 				OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */
212 
213 		// Setup manual flow control for EOF via TRIG_A
214 		optc->funcs->setup_manual_trigger(optc);
215 	}
216 }
217 
218 void optc32_set_drr(
219 	struct timing_generator *optc,
220 	const struct drr_params *params)
221 {
222 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
223 
224 	if (params != NULL &&
225 		params->vertical_total_max > 0 &&
226 		params->vertical_total_min > 0) {
227 
228 		if (params->vertical_total_mid != 0) {
229 
230 			REG_SET(OTG_V_TOTAL_MID, 0,
231 				OTG_V_TOTAL_MID, params->vertical_total_mid - 1);
232 
233 			REG_UPDATE_2(OTG_V_TOTAL_CONTROL,
234 					OTG_VTOTAL_MID_REPLACING_MAX_EN, 1,
235 					OTG_VTOTAL_MID_FRAME_NUM,
236 					(uint8_t)params->vertical_total_mid_frame_num);
237 
238 		}
239 
240 		optc->funcs->set_vtotal_min_max(optc, params->vertical_total_min - 1, params->vertical_total_max - 1);
241 		optc32_setup_manual_trigger(optc);
242 	} else {
243 		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
244 				OTG_SET_V_TOTAL_MIN_MASK, 0,
245 				OTG_V_TOTAL_MIN_SEL, 0,
246 				OTG_V_TOTAL_MAX_SEL, 0,
247 				OTG_FORCE_LOCK_ON_EVENT, 0);
248 
249 		optc->funcs->set_vtotal_min_max(optc, 0, 0);
250 	}
251 }
252 
253 static struct timing_generator_funcs dcn32_tg_funcs = {
254 		.validate_timing = optc1_validate_timing,
255 		.program_timing = optc1_program_timing,
256 		.setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
257 		.setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
258 		.setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
259 		.program_global_sync = optc1_program_global_sync,
260 		.enable_crtc = optc32_enable_crtc,
261 		.disable_crtc = optc32_disable_crtc,
262 		.phantom_crtc_post_enable = optc32_phantom_crtc_post_enable,
263 		/* used by enable_timing_synchronization. Not need for FPGA */
264 		.is_counter_moving = optc1_is_counter_moving,
265 		.get_position = optc1_get_position,
266 		.get_frame_count = optc1_get_vblank_counter,
267 		.get_scanoutpos = optc1_get_crtc_scanoutpos,
268 		.get_otg_active_size = optc1_get_otg_active_size,
269 		.set_early_control = optc1_set_early_control,
270 		/* used by enable_timing_synchronization. Not need for FPGA */
271 		.wait_for_state = optc1_wait_for_state,
272 		.set_blank_color = optc3_program_blank_color,
273 		.did_triggered_reset_occur = optc1_did_triggered_reset_occur,
274 		.triplebuffer_lock = optc3_triplebuffer_lock,
275 		.triplebuffer_unlock = optc2_triplebuffer_unlock,
276 		.enable_reset_trigger = optc1_enable_reset_trigger,
277 		.enable_crtc_reset = optc1_enable_crtc_reset,
278 		.disable_reset_trigger = optc1_disable_reset_trigger,
279 		.lock = optc3_lock,
280 		.unlock = optc1_unlock,
281 		.lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
282 		.lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
283 		.enable_optc_clock = optc1_enable_optc_clock,
284 		.set_drr = optc32_set_drr,
285 		.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
286 		.set_vtotal_min_max = optc3_set_vtotal_min_max,
287 		.set_static_screen_control = optc1_set_static_screen_control,
288 		.program_stereo = optc1_program_stereo,
289 		.is_stereo_left_eye = optc1_is_stereo_left_eye,
290 		.tg_init = optc3_tg_init,
291 		.is_tg_enabled = optc1_is_tg_enabled,
292 		.is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
293 		.clear_optc_underflow = optc1_clear_optc_underflow,
294 		.setup_global_swap_lock = NULL,
295 		.get_crc = optc1_get_crc,
296 		.configure_crc = optc1_configure_crc,
297 		.set_dsc_config = optc3_set_dsc_config,
298 		.get_dsc_status = optc2_get_dsc_status,
299 		.set_dwb_source = NULL,
300 		.set_odm_bypass = optc32_set_odm_bypass,
301 		.set_odm_combine = optc32_set_odm_combine,
302 		.set_h_timing_div_manual_mode = optc32_set_h_timing_div_manual_mode,
303 		.get_optc_source = optc2_get_optc_source,
304 		.set_out_mux = optc3_set_out_mux,
305 		.set_drr_trigger_window = optc3_set_drr_trigger_window,
306 		.set_vtotal_change_limit = optc3_set_vtotal_change_limit,
307 		.set_gsl = optc2_set_gsl,
308 		.set_gsl_source_select = optc2_set_gsl_source_select,
309 		.set_vtg_params = optc1_set_vtg_params,
310 		.program_manual_trigger = optc2_program_manual_trigger,
311 		.setup_manual_trigger = optc2_setup_manual_trigger,
312 		.get_hw_timing = optc1_get_hw_timing,
313 };
314 
315 void dcn32_timing_generator_init(struct optc *optc1)
316 {
317 	optc1->base.funcs = &dcn32_tg_funcs;
318 
319 	optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
320 	optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
321 
322 	optc1->min_h_blank = 32;
323 	optc1->min_v_blank = 3;
324 	optc1->min_v_blank_interlace = 5;
325 	optc1->min_h_sync_width = 4;
326 	optc1->min_v_sync_width = 1;
327 }
328 
329