1 /*
2  * Copyright 2020 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 "reg_helper.h"
27 #include "dcn30_optc.h"
28 #include "dc.h"
29 #include "dcn_calc_math.h"
30 #include "dc_dmub_srv.h"
31 
32 #include "dml/dcn30/dcn30_fpu.h"
33 #include "dc_trace.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 void optc3_triplebuffer_lock(struct timing_generator *optc)
46 {
47 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
48 
49 	REG_UPDATE(OTG_GLOBAL_CONTROL2,
50 		OTG_MASTER_UPDATE_LOCK_SEL, optc->inst);
51 
52 	REG_SET(OTG_VUPDATE_KEEPOUT, 0,
53 		OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, 1);
54 
55 	REG_SET(OTG_MASTER_UPDATE_LOCK, 0,
56 		OTG_MASTER_UPDATE_LOCK, 1);
57 
58 	REG_WAIT(OTG_MASTER_UPDATE_LOCK,
59 			UPDATE_LOCK_STATUS, 1,
60 			1, 10);
61 
62 	TRACE_OPTC_LOCK_UNLOCK_STATE(optc1, optc->inst, true);
63 }
64 
65 void optc3_lock_doublebuffer_enable(struct timing_generator *optc)
66 {
67 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
68 	uint32_t v_blank_start = 0;
69 	uint32_t v_blank_end = 0;
70 	uint32_t h_blank_start = 0;
71 	uint32_t h_blank_end = 0;
72 
73 	REG_GET_2(OTG_V_BLANK_START_END,
74 		OTG_V_BLANK_START, &v_blank_start,
75 		OTG_V_BLANK_END, &v_blank_end);
76 	REG_GET_2(OTG_H_BLANK_START_END,
77 		OTG_H_BLANK_START, &h_blank_start,
78 		OTG_H_BLANK_END, &h_blank_end);
79 
80 	REG_UPDATE_2(OTG_GLOBAL_CONTROL1,
81 		MASTER_UPDATE_LOCK_DB_START_Y, v_blank_start - 1,
82 		MASTER_UPDATE_LOCK_DB_END_Y, v_blank_start);
83 	REG_UPDATE_2(OTG_GLOBAL_CONTROL4,
84 		DIG_UPDATE_POSITION_X, h_blank_start - 180 - 1,
85 		DIG_UPDATE_POSITION_Y, v_blank_start - 1);
86 	// there is a DIG_UPDATE_VCOUNT_MODE and it is 0.
87 
88 	REG_UPDATE_3(OTG_GLOBAL_CONTROL0,
89 		MASTER_UPDATE_LOCK_DB_START_X, h_blank_start - 200 - 1,
90 		MASTER_UPDATE_LOCK_DB_END_X, h_blank_start - 180,
91 		MASTER_UPDATE_LOCK_DB_EN, 1);
92 	REG_UPDATE(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 1);
93 
94 	REG_SET_3(OTG_VUPDATE_KEEPOUT, 0,
95 		MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_START_OFFSET, 0,
96 		MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_END_OFFSET, 100,
97 		OTG_MASTER_UPDATE_LOCK_VUPDATE_KEEPOUT_EN, 1);
98 
99 	TRACE_OPTC_LOCK_UNLOCK_STATE(optc1, optc->inst, true);
100 }
101 
102 void optc3_lock_doublebuffer_disable(struct timing_generator *optc)
103 {
104 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
105 
106 	REG_UPDATE_2(OTG_GLOBAL_CONTROL0,
107 		MASTER_UPDATE_LOCK_DB_START_X, 0,
108 		MASTER_UPDATE_LOCK_DB_END_X, 0);
109 	REG_UPDATE_2(OTG_GLOBAL_CONTROL1,
110 		MASTER_UPDATE_LOCK_DB_START_Y, 0,
111 		MASTER_UPDATE_LOCK_DB_END_Y, 0);
112 
113 	REG_UPDATE(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 0);
114 	REG_UPDATE(OTG_GLOBAL_CONTROL0, MASTER_UPDATE_LOCK_DB_EN, 0);
115 
116 	TRACE_OPTC_LOCK_UNLOCK_STATE(optc1, optc->inst, true);
117 }
118 
119 void optc3_lock(struct timing_generator *optc)
120 {
121 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
122 
123 	REG_UPDATE(OTG_GLOBAL_CONTROL2,
124 		OTG_MASTER_UPDATE_LOCK_SEL, optc->inst);
125 	REG_SET(OTG_MASTER_UPDATE_LOCK, 0,
126 		OTG_MASTER_UPDATE_LOCK, 1);
127 
128 	REG_WAIT(OTG_MASTER_UPDATE_LOCK,
129 			UPDATE_LOCK_STATUS, 1,
130 			1, 10);
131 
132 	TRACE_OPTC_LOCK_UNLOCK_STATE(optc1, optc->inst, true);
133 }
134 
135 void optc3_set_out_mux(struct timing_generator *optc, enum otg_out_mux_dest dest)
136 {
137 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
138 
139 	REG_UPDATE(OTG_CONTROL, OTG_OUT_MUX, dest);
140 }
141 
142 void optc3_program_blank_color(struct timing_generator *optc,
143 		const struct tg_color *blank_color)
144 {
145 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
146 
147 	REG_SET_3(OTG_BLANK_DATA_COLOR, 0,
148 		OTG_BLANK_DATA_COLOR_BLUE_CB, blank_color->color_b_cb,
149 		OTG_BLANK_DATA_COLOR_GREEN_Y, blank_color->color_g_y,
150 		OTG_BLANK_DATA_COLOR_RED_CR, blank_color->color_r_cr);
151 
152 	REG_SET_3(OTG_BLANK_DATA_COLOR_EXT, 0,
153 		OTG_BLANK_DATA_COLOR_BLUE_CB_EXT, blank_color->color_b_cb >> 10,
154 		OTG_BLANK_DATA_COLOR_GREEN_Y_EXT, blank_color->color_g_y >> 10,
155 		OTG_BLANK_DATA_COLOR_RED_CR_EXT, blank_color->color_r_cr >> 10);
156 }
157 
158 void optc3_set_drr_trigger_window(struct timing_generator *optc,
159 		uint32_t window_start, uint32_t window_end)
160 {
161 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
162 
163 	REG_SET_2(OTG_DRR_TRIGGER_WINDOW, 0,
164 		OTG_DRR_TRIGGER_WINDOW_START_X, window_start,
165 		OTG_DRR_TRIGGER_WINDOW_END_X, window_end);
166 }
167 
168 void optc3_set_vtotal_change_limit(struct timing_generator *optc,
169 		uint32_t limit)
170 {
171 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
172 
173 
174 	REG_SET(OTG_DRR_V_TOTAL_CHANGE, 0,
175 		OTG_DRR_V_TOTAL_CHANGE_LIMIT, limit);
176 }
177 
178 
179 /* Set DSC-related configuration.
180  *   dsc_mode: 0 disables DSC, other values enable DSC in specified format
181  *   sc_bytes_per_pixel: Bytes per pixel in u3.28 format
182  *   dsc_slice_width: Slice width in pixels
183  */
184 void optc3_set_dsc_config(struct timing_generator *optc,
185 		enum optc_dsc_mode dsc_mode,
186 		uint32_t dsc_bytes_per_pixel,
187 		uint32_t dsc_slice_width)
188 {
189 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
190 
191 	optc2_set_dsc_config(optc, dsc_mode, dsc_bytes_per_pixel, dsc_slice_width);
192 	REG_UPDATE(OTG_V_SYNC_A_CNTL, OTG_V_SYNC_MODE, 0);
193 }
194 
195 void optc3_set_odm_bypass(struct timing_generator *optc,
196 		const struct dc_crtc_timing *dc_crtc_timing)
197 {
198 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
199 	enum h_timing_div_mode h_div = H_TIMING_NO_DIV;
200 
201 	REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
202 			OPTC_NUM_OF_INPUT_SEGMENT, 0,
203 			OPTC_SEG0_SRC_SEL, optc->inst,
204 			OPTC_SEG1_SRC_SEL, 0xf,
205 			OPTC_SEG2_SRC_SEL, 0xf,
206 			OPTC_SEG3_SRC_SEL, 0xf
207 			);
208 
209 	h_div = optc1_is_two_pixels_per_containter(dc_crtc_timing);
210 	REG_SET(OTG_H_TIMING_CNTL, 0,
211 			OTG_H_TIMING_DIV_MODE, h_div);
212 
213 	REG_SET(OPTC_MEMORY_CONFIG, 0,
214 			OPTC_MEM_SEL, 0);
215 	optc1->opp_count = 1;
216 }
217 
218 static void optc3_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt,
219 		struct dc_crtc_timing *timing)
220 {
221 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
222 	int mpcc_hactive = (timing->h_addressable + timing->h_border_left + timing->h_border_right)
223 			/ opp_cnt;
224 	uint32_t memory_mask = 0;
225 
226 	/* TODO: In pseudocode but does not affect maximus, delete comment if we dont need on asic
227 	 * REG_SET(OTG_GLOBAL_CONTROL2, 0, GLOBAL_UPDATE_LOCK_EN, 1);
228 	 * Program OTG register MASTER_UPDATE_LOCK_DB_X/Y to the position before DP frame start
229 	 * REG_SET_2(OTG_GLOBAL_CONTROL1, 0,
230 	 *		MASTER_UPDATE_LOCK_DB_X, 160,
231 	 *		MASTER_UPDATE_LOCK_DB_Y, 240);
232 	 */
233 
234 	ASSERT(opp_cnt == 2 || opp_cnt == 4);
235 
236 	/* 2 pieces of memory required for up to 5120 displays, 4 for up to 8192,
237 	 * however, for ODM combine we can simplify by always using 4.
238 	 */
239 	if (opp_cnt == 2) {
240 		/* To make sure there's no memory overlap, each instance "reserves" 2
241 		 * memories and they are uniquely combined here.
242 		 */
243 		memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2);
244 	} else if (opp_cnt == 4) {
245 		/* To make sure there's no memory overlap, each instance "reserves" 1
246 		 * memory and they are uniquely combined here.
247 		 */
248 		memory_mask = 0x1 << (opp_id[0] * 2) | 0x1 << (opp_id[1] * 2) | 0x1 << (opp_id[2] * 2) | 0x1 << (opp_id[3] * 2);
249 	}
250 
251 	if (REG(OPTC_MEMORY_CONFIG))
252 		REG_SET(OPTC_MEMORY_CONFIG, 0,
253 			OPTC_MEM_SEL, memory_mask);
254 
255 	if (opp_cnt == 2) {
256 		REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0,
257 				OPTC_NUM_OF_INPUT_SEGMENT, 1,
258 				OPTC_SEG0_SRC_SEL, opp_id[0],
259 				OPTC_SEG1_SRC_SEL, opp_id[1]);
260 	} else if (opp_cnt == 4) {
261 		REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
262 				OPTC_NUM_OF_INPUT_SEGMENT, 3,
263 				OPTC_SEG0_SRC_SEL, opp_id[0],
264 				OPTC_SEG1_SRC_SEL, opp_id[1],
265 				OPTC_SEG2_SRC_SEL, opp_id[2],
266 				OPTC_SEG3_SRC_SEL, opp_id[3]);
267 	}
268 
269 	REG_UPDATE(OPTC_WIDTH_CONTROL,
270 			OPTC_SEGMENT_WIDTH, mpcc_hactive);
271 
272 	REG_SET(OTG_H_TIMING_CNTL, 0, OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
273 	optc1->opp_count = opp_cnt;
274 }
275 
276 /**
277  * optc3_set_timing_double_buffer() - DRR double buffering control
278  *
279  * Sets double buffer point for V_TOTAL, H_TOTAL, VTOTAL_MIN,
280  * VTOTAL_MAX, VTOTAL_MIN_SEL and VTOTAL_MAX_SEL registers.
281  *
282  * @optc: timing_generator instance.
283  * @enable: Enable DRR double buffering control if true, disable otherwise.
284  *
285  * Options: any time,  start of frame, dp start of frame (range timing)
286  */
287 static void optc3_set_timing_double_buffer(struct timing_generator *optc, bool enable)
288 {
289 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
290 	uint32_t mode = enable ? 2 : 0;
291 
292 	REG_UPDATE(OTG_DOUBLE_BUFFER_CONTROL,
293 		   OTG_DRR_TIMING_DBUF_UPDATE_MODE, mode);
294 }
295 
296 static void optc3_wait_drr_doublebuffer_pending_clear(struct timing_generator *optc)
297 {
298 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
299 
300 	REG_WAIT(OTG_DOUBLE_BUFFER_CONTROL, OTG_DRR_TIMING_DBUF_UPDATE_PENDING, 0, 2, 100000); /* 1 vupdate at 5hz */
301 
302 }
303 
304 void optc3_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max)
305 {
306 	struct dc *dc = optc->ctx->dc;
307 
308 	if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams)
309 		dc_dmub_srv_drr_update_cmd(dc, optc->inst, vtotal_min, vtotal_max);
310 	else
311 		optc1_set_vtotal_min_max(optc, vtotal_min, vtotal_max);
312 }
313 
314 void optc3_tg_init(struct timing_generator *optc)
315 {
316 	optc3_set_timing_double_buffer(optc, true);
317 	optc1_clear_optc_underflow(optc);
318 }
319 
320 static struct timing_generator_funcs dcn30_tg_funcs = {
321 		.validate_timing = optc1_validate_timing,
322 		.program_timing = optc1_program_timing,
323 		.setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
324 		.setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
325 		.setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
326 		.program_global_sync = optc1_program_global_sync,
327 		.enable_crtc = optc2_enable_crtc,
328 		.disable_crtc = optc1_disable_crtc,
329 		/* used by enable_timing_synchronization. Not need for FPGA */
330 		.is_counter_moving = optc1_is_counter_moving,
331 		.get_position = optc1_get_position,
332 		.get_frame_count = optc1_get_vblank_counter,
333 		.get_scanoutpos = optc1_get_crtc_scanoutpos,
334 		.get_otg_active_size = optc1_get_otg_active_size,
335 		.set_early_control = optc1_set_early_control,
336 		/* used by enable_timing_synchronization. Not need for FPGA */
337 		.wait_for_state = optc1_wait_for_state,
338 		.set_blank_color = optc3_program_blank_color,
339 		.did_triggered_reset_occur = optc1_did_triggered_reset_occur,
340 		.triplebuffer_lock = optc3_triplebuffer_lock,
341 		.triplebuffer_unlock = optc2_triplebuffer_unlock,
342 		.enable_reset_trigger = optc1_enable_reset_trigger,
343 		.enable_crtc_reset = optc1_enable_crtc_reset,
344 		.disable_reset_trigger = optc1_disable_reset_trigger,
345 		.lock = optc3_lock,
346 		.unlock = optc1_unlock,
347 		.lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
348 		.lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
349 		.enable_optc_clock = optc1_enable_optc_clock,
350 		.set_drr = optc1_set_drr,
351 		.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
352 		.set_vtotal_min_max = optc3_set_vtotal_min_max,
353 		.set_static_screen_control = optc1_set_static_screen_control,
354 		.program_stereo = optc1_program_stereo,
355 		.is_stereo_left_eye = optc1_is_stereo_left_eye,
356 		.tg_init = optc3_tg_init,
357 		.is_tg_enabled = optc1_is_tg_enabled,
358 		.is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
359 		.clear_optc_underflow = optc1_clear_optc_underflow,
360 		.setup_global_swap_lock = NULL,
361 		.get_crc = optc1_get_crc,
362 		.configure_crc = optc2_configure_crc,
363 		.set_dsc_config = optc3_set_dsc_config,
364 		.get_dsc_status = optc2_get_dsc_status,
365 		.set_dwb_source = NULL,
366 		.set_odm_bypass = optc3_set_odm_bypass,
367 		.set_odm_combine = optc3_set_odm_combine,
368 		.get_optc_source = optc2_get_optc_source,
369 		.set_out_mux = optc3_set_out_mux,
370 		.set_drr_trigger_window = optc3_set_drr_trigger_window,
371 		.set_vtotal_change_limit = optc3_set_vtotal_change_limit,
372 		.set_gsl = optc2_set_gsl,
373 		.set_gsl_source_select = optc2_set_gsl_source_select,
374 		.set_vtg_params = optc1_set_vtg_params,
375 		.program_manual_trigger = optc2_program_manual_trigger,
376 		.setup_manual_trigger = optc2_setup_manual_trigger,
377 		.get_hw_timing = optc1_get_hw_timing,
378 		.wait_drr_doublebuffer_pending_clear = optc3_wait_drr_doublebuffer_pending_clear,
379 };
380 
381 void dcn30_timing_generator_init(struct optc *optc1)
382 {
383 	optc1->base.funcs = &dcn30_tg_funcs;
384 
385 	optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
386 	optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
387 
388 	optc1->min_h_blank = 32;
389 	optc1->min_v_blank = 3;
390 	optc1->min_v_blank_interlace = 5;
391 	optc1->min_h_sync_width = 4;
392 	optc1->min_v_sync_width = 1;
393 }
394