1 /*
2  * Copyright 2012-15 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 "dcn31_optc.h"
27 
28 #include "dcn30/dcn30_optc.h"
29 #include "reg_helper.h"
30 #include "dc.h"
31 #include "dcn_calc_math.h"
32 
33 #define REG(reg)\
34 	optc1->tg_regs->reg
35 
36 #define CTX \
37 	optc1->base.ctx
38 
39 #undef FN
40 #define FN(reg_name, field_name) \
41 	optc1->tg_shift->field_name, optc1->tg_mask->field_name
42 
43 static void optc31_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt,
44 		struct dc_crtc_timing *timing)
45 {
46 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
47 	int mpcc_hactive = (timing->h_addressable + timing->h_border_left + timing->h_border_right)
48 			/ opp_cnt;
49 	uint32_t memory_mask = 0;
50 	int mem_count_per_opp = (mpcc_hactive + 2559) / 2560;
51 
52 	/* Assume less than 6 pipes */
53 	if (opp_cnt == 4) {
54 		if (mem_count_per_opp == 1)
55 			memory_mask = 0xf;
56 		else {
57 			ASSERT(mem_count_per_opp == 2);
58 			memory_mask = 0xff;
59 		}
60 	} else if (mem_count_per_opp == 1)
61 		memory_mask = 0x1 << (opp_id[0] * 2) | 0x1 << (opp_id[1] * 2);
62 	else if (mem_count_per_opp == 2)
63 		memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2);
64 	else if (mem_count_per_opp == 3)
65 		memory_mask = 0x77;
66 	else if (mem_count_per_opp == 4)
67 		memory_mask = 0xff;
68 
69 	if (REG(OPTC_MEMORY_CONFIG))
70 		REG_SET(OPTC_MEMORY_CONFIG, 0,
71 			OPTC_MEM_SEL, memory_mask);
72 
73 	if (opp_cnt == 2) {
74 		REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0,
75 				OPTC_NUM_OF_INPUT_SEGMENT, 1,
76 				OPTC_SEG0_SRC_SEL, opp_id[0],
77 				OPTC_SEG1_SRC_SEL, opp_id[1]);
78 	} else if (opp_cnt == 4) {
79 		REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
80 				OPTC_NUM_OF_INPUT_SEGMENT, 3,
81 				OPTC_SEG0_SRC_SEL, opp_id[0],
82 				OPTC_SEG1_SRC_SEL, opp_id[1],
83 				OPTC_SEG2_SRC_SEL, opp_id[2],
84 				OPTC_SEG3_SRC_SEL, opp_id[3]);
85 	}
86 
87 	REG_UPDATE(OPTC_WIDTH_CONTROL,
88 			OPTC_SEGMENT_WIDTH, mpcc_hactive);
89 
90 	REG_SET(OTG_H_TIMING_CNTL, 0, OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
91 	optc1->opp_count = opp_cnt;
92 }
93 
94 /*
95  * Enable CRTC - call ASIC Control Object to enable Timing generator.
96  */
97 static bool optc31_enable_crtc(struct timing_generator *optc)
98 {
99 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
100 
101 	/* opp instance for OTG, 1 to 1 mapping and odm will adjust */
102 	REG_UPDATE(OPTC_DATA_SOURCE_SELECT,
103 			OPTC_SEG0_SRC_SEL, optc->inst);
104 
105 	/* VTG enable first is for HW workaround */
106 	REG_UPDATE(CONTROL,
107 			VTG0_ENABLE, 1);
108 
109 	REG_SEQ_START();
110 
111 	/* Enable CRTC */
112 	REG_UPDATE_2(OTG_CONTROL,
113 			OTG_DISABLE_POINT_CNTL, 2,
114 			OTG_MASTER_EN, 1);
115 
116 	REG_SEQ_SUBMIT();
117 	REG_SEQ_WAIT_DONE();
118 
119 	return true;
120 }
121 
122 /* disable_crtc - call ASIC Control Object to disable Timing generator. */
123 static bool optc31_disable_crtc(struct timing_generator *optc)
124 {
125 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
126 	/* disable otg request until end of the first line
127 	 * in the vertical blank region
128 	 */
129 	REG_UPDATE(OTG_CONTROL,
130 			OTG_MASTER_EN, 0);
131 
132 	REG_UPDATE(CONTROL,
133 			VTG0_ENABLE, 0);
134 
135 	/* CRTC disabled, so disable  clock. */
136 	REG_WAIT(OTG_CLOCK_CONTROL,
137 			OTG_BUSY, 0,
138 			1, 100000);
139 	optc1_clear_optc_underflow(optc);
140 
141 	return true;
142 }
143 
144 static bool optc31_immediate_disable_crtc(struct timing_generator *optc)
145 {
146 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
147 
148 	REG_UPDATE_2(OTG_CONTROL,
149 			OTG_DISABLE_POINT_CNTL, 0,
150 			OTG_MASTER_EN, 0);
151 
152 	REG_UPDATE(CONTROL,
153 			VTG0_ENABLE, 0);
154 
155 	/* CRTC disabled, so disable  clock. */
156 	REG_WAIT(OTG_CLOCK_CONTROL,
157 			OTG_BUSY, 0,
158 			1, 100000);
159 
160 	/* clear the false state */
161 	optc1_clear_optc_underflow(optc);
162 
163 	return true;
164 }
165 
166 void optc31_set_drr(
167 	struct timing_generator *optc,
168 	const struct drr_params *params)
169 {
170 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
171 
172 	if (params != NULL &&
173 		params->vertical_total_max > 0 &&
174 		params->vertical_total_min > 0) {
175 
176 		if (params->vertical_total_mid != 0) {
177 
178 			REG_SET(OTG_V_TOTAL_MID, 0,
179 				OTG_V_TOTAL_MID, params->vertical_total_mid - 1);
180 
181 			REG_UPDATE_2(OTG_V_TOTAL_CONTROL,
182 					OTG_VTOTAL_MID_REPLACING_MAX_EN, 1,
183 					OTG_VTOTAL_MID_FRAME_NUM,
184 					(uint8_t)params->vertical_total_mid_frame_num);
185 
186 		}
187 
188 		optc->funcs->set_vtotal_min_max(optc, params->vertical_total_min - 1, params->vertical_total_max - 1);
189 
190 		/*
191 		 * MIN_MASK_EN is gone and MASK is now always enabled.
192 		 *
193 		 * To get it to it work with manual trigger we need to make sure
194 		 * we program the correct bit.
195 		 */
196 		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
197 				OTG_V_TOTAL_MIN_SEL, 1,
198 				OTG_V_TOTAL_MAX_SEL, 1,
199 				OTG_FORCE_LOCK_ON_EVENT, 0,
200 				OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */
201 
202 		// Setup manual flow control for EOF via TRIG_A
203 		optc->funcs->setup_manual_trigger(optc);
204 
205 	} else {
206 		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
207 				OTG_SET_V_TOTAL_MIN_MASK, 0,
208 				OTG_V_TOTAL_MIN_SEL, 0,
209 				OTG_V_TOTAL_MAX_SEL, 0,
210 				OTG_FORCE_LOCK_ON_EVENT, 0);
211 
212 		optc->funcs->set_vtotal_min_max(optc, 0, 0);
213 	}
214 }
215 
216 void optc3_init_odm(struct timing_generator *optc)
217 {
218 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
219 
220 	REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
221 			OPTC_NUM_OF_INPUT_SEGMENT, 0,
222 			OPTC_SEG0_SRC_SEL, optc->inst,
223 			OPTC_SEG1_SRC_SEL, 0xf,
224 			OPTC_SEG2_SRC_SEL, 0xf,
225 			OPTC_SEG3_SRC_SEL, 0xf
226 			);
227 
228 	REG_SET(OTG_H_TIMING_CNTL, 0,
229 			OTG_H_TIMING_DIV_MODE, 0);
230 
231 	REG_SET(OPTC_MEMORY_CONFIG, 0,
232 			OPTC_MEM_SEL, 0);
233 	optc1->opp_count = 1;
234 }
235 
236 static struct timing_generator_funcs dcn31_tg_funcs = {
237 		.validate_timing = optc1_validate_timing,
238 		.program_timing = optc1_program_timing,
239 		.setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
240 		.setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
241 		.setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
242 		.program_global_sync = optc1_program_global_sync,
243 		.enable_crtc = optc31_enable_crtc,
244 		.disable_crtc = optc31_disable_crtc,
245 		.immediate_disable_crtc = optc31_immediate_disable_crtc,
246 		/* used by enable_timing_synchronization. Not need for FPGA */
247 		.is_counter_moving = optc1_is_counter_moving,
248 		.get_position = optc1_get_position,
249 		.get_frame_count = optc1_get_vblank_counter,
250 		.get_scanoutpos = optc1_get_crtc_scanoutpos,
251 		.get_otg_active_size = optc1_get_otg_active_size,
252 		.set_early_control = optc1_set_early_control,
253 		/* used by enable_timing_synchronization. Not need for FPGA */
254 		.wait_for_state = optc1_wait_for_state,
255 		.set_blank_color = optc3_program_blank_color,
256 		.did_triggered_reset_occur = optc1_did_triggered_reset_occur,
257 		.triplebuffer_lock = optc3_triplebuffer_lock,
258 		.triplebuffer_unlock = optc2_triplebuffer_unlock,
259 		.enable_reset_trigger = optc1_enable_reset_trigger,
260 		.enable_crtc_reset = optc1_enable_crtc_reset,
261 		.disable_reset_trigger = optc1_disable_reset_trigger,
262 		.lock = optc3_lock,
263 		.is_locked = optc1_is_locked,
264 		.unlock = optc1_unlock,
265 		.lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
266 		.lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
267 		.enable_optc_clock = optc1_enable_optc_clock,
268 		.set_drr = optc31_set_drr,
269 		.set_vtotal_min_max = optc1_set_vtotal_min_max,
270 		.set_static_screen_control = optc1_set_static_screen_control,
271 		.program_stereo = optc1_program_stereo,
272 		.is_stereo_left_eye = optc1_is_stereo_left_eye,
273 		.tg_init = optc3_tg_init,
274 		.is_tg_enabled = optc1_is_tg_enabled,
275 		.is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
276 		.clear_optc_underflow = optc1_clear_optc_underflow,
277 		.setup_global_swap_lock = NULL,
278 		.get_crc = optc1_get_crc,
279 		.configure_crc = optc2_configure_crc,
280 		.set_dsc_config = optc3_set_dsc_config,
281 		.get_dsc_status = optc2_get_dsc_status,
282 		.set_dwb_source = NULL,
283 		.set_odm_bypass = optc3_set_odm_bypass,
284 		.set_odm_combine = optc31_set_odm_combine,
285 		.get_optc_source = optc2_get_optc_source,
286 		.set_out_mux = optc3_set_out_mux,
287 		.set_drr_trigger_window = optc3_set_drr_trigger_window,
288 		.set_vtotal_change_limit = optc3_set_vtotal_change_limit,
289 		.set_gsl = optc2_set_gsl,
290 		.set_gsl_source_select = optc2_set_gsl_source_select,
291 		.set_vtg_params = optc1_set_vtg_params,
292 		.program_manual_trigger = optc2_program_manual_trigger,
293 		.setup_manual_trigger = optc2_setup_manual_trigger,
294 		.get_hw_timing = optc1_get_hw_timing,
295 		.init_odm = optc3_init_odm,
296 };
297 
298 void dcn31_timing_generator_init(struct optc *optc1)
299 {
300 	optc1->base.funcs = &dcn31_tg_funcs;
301 
302 	optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
303 	optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
304 
305 	optc1->min_h_blank = 32;
306 	optc1->min_v_blank = 3;
307 	optc1->min_v_blank_interlace = 5;
308 	optc1->min_h_sync_width = 4;
309 	optc1->min_v_sync_width = 1;
310 }
311 
312