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 "dcn301_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 
46 /**
47  * optc301_set_drr() - Program dynamic refresh rate registers m_OTGx_OTG_V_TOTAL_*.
48  *
49  * @optc: timing_generator instance.
50  * @params: parameters used for Dynamic Refresh Rate.
51  */
52 void optc301_set_drr(
53 	struct timing_generator *optc,
54 	const struct drr_params *params)
55 {
56 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
57 
58 	if (params != NULL &&
59 		params->vertical_total_max > 0 &&
60 		params->vertical_total_min > 0) {
61 
62 		if (params->vertical_total_mid != 0) {
63 
64 			REG_SET(OTG_V_TOTAL_MID, 0,
65 				OTG_V_TOTAL_MID, params->vertical_total_mid - 1);
66 
67 			REG_UPDATE_2(OTG_V_TOTAL_CONTROL,
68 					OTG_VTOTAL_MID_REPLACING_MAX_EN, 1,
69 					OTG_VTOTAL_MID_FRAME_NUM,
70 					(uint8_t)params->vertical_total_mid_frame_num);
71 
72 		}
73 
74 		optc->funcs->set_vtotal_min_max(optc, params->vertical_total_min - 1, params->vertical_total_max - 1);
75 
76 		REG_UPDATE_5(OTG_V_TOTAL_CONTROL,
77 				OTG_V_TOTAL_MIN_SEL, 1,
78 				OTG_V_TOTAL_MAX_SEL, 1,
79 				OTG_FORCE_LOCK_ON_EVENT, 0,
80 				OTG_SET_V_TOTAL_MIN_MASK_EN, 0,
81 				OTG_SET_V_TOTAL_MIN_MASK, 0);
82 		// Setup manual flow control for EOF via TRIG_A
83 		optc->funcs->setup_manual_trigger(optc);
84 
85 	} else {
86 		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
87 				OTG_SET_V_TOTAL_MIN_MASK, 0,
88 				OTG_V_TOTAL_MIN_SEL, 0,
89 				OTG_V_TOTAL_MAX_SEL, 0,
90 				OTG_FORCE_LOCK_ON_EVENT, 0);
91 
92 		optc->funcs->set_vtotal_min_max(optc, 0, 0);
93 	}
94 }
95 
96 
97 void optc301_setup_manual_trigger(struct timing_generator *optc)
98 {
99 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
100 
101 	REG_SET_8(OTG_TRIGA_CNTL, 0,
102 			OTG_TRIGA_SOURCE_SELECT, 21,
103 			OTG_TRIGA_SOURCE_PIPE_SELECT, optc->inst,
104 			OTG_TRIGA_RISING_EDGE_DETECT_CNTL, 1,
105 			OTG_TRIGA_FALLING_EDGE_DETECT_CNTL, 0,
106 			OTG_TRIGA_POLARITY_SELECT, 0,
107 			OTG_TRIGA_FREQUENCY_SELECT, 0,
108 			OTG_TRIGA_DELAY, 0,
109 			OTG_TRIGA_CLEAR, 1);
110 }
111 
112 static struct timing_generator_funcs dcn30_tg_funcs = {
113 		.validate_timing = optc1_validate_timing,
114 		.program_timing = optc1_program_timing,
115 		.setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
116 		.setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
117 		.setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
118 		.program_global_sync = optc1_program_global_sync,
119 		.enable_crtc = optc2_enable_crtc,
120 		.disable_crtc = optc1_disable_crtc,
121 		/* used by enable_timing_synchronization. Not need for FPGA */
122 		.is_counter_moving = optc1_is_counter_moving,
123 		.get_position = optc1_get_position,
124 		.get_frame_count = optc1_get_vblank_counter,
125 		.get_scanoutpos = optc1_get_crtc_scanoutpos,
126 		.get_otg_active_size = optc1_get_otg_active_size,
127 		.set_early_control = optc1_set_early_control,
128 		/* used by enable_timing_synchronization. Not need for FPGA */
129 		.wait_for_state = optc1_wait_for_state,
130 		.set_blank_color = optc3_program_blank_color,
131 		.did_triggered_reset_occur = optc1_did_triggered_reset_occur,
132 		.triplebuffer_lock = optc3_triplebuffer_lock,
133 		.triplebuffer_unlock = optc2_triplebuffer_unlock,
134 		.enable_reset_trigger = optc1_enable_reset_trigger,
135 		.enable_crtc_reset = optc1_enable_crtc_reset,
136 		.disable_reset_trigger = optc1_disable_reset_trigger,
137 		.lock = optc3_lock,
138 		.unlock = optc1_unlock,
139 		.lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
140 		.lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
141 		.enable_optc_clock = optc1_enable_optc_clock,
142 		.set_drr = optc301_set_drr,
143 		.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
144 		.set_vtotal_min_max = optc3_set_vtotal_min_max,
145 		.set_static_screen_control = optc1_set_static_screen_control,
146 		.program_stereo = optc1_program_stereo,
147 		.is_stereo_left_eye = optc1_is_stereo_left_eye,
148 		.tg_init = optc3_tg_init,
149 		.is_tg_enabled = optc1_is_tg_enabled,
150 		.is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
151 		.clear_optc_underflow = optc1_clear_optc_underflow,
152 		.setup_global_swap_lock = NULL,
153 		.get_crc = optc1_get_crc,
154 		.configure_crc = optc2_configure_crc,
155 		.set_dsc_config = optc3_set_dsc_config,
156 		.get_dsc_status = optc2_get_dsc_status,
157 		.set_dwb_source = NULL,
158 		.set_odm_bypass = optc3_set_odm_bypass,
159 		.set_odm_combine = optc3_set_odm_combine,
160 		.get_optc_source = optc2_get_optc_source,
161 		.set_out_mux = optc3_set_out_mux,
162 		.set_drr_trigger_window = optc3_set_drr_trigger_window,
163 		.set_vtotal_change_limit = optc3_set_vtotal_change_limit,
164 		.set_gsl = optc2_set_gsl,
165 		.set_gsl_source_select = optc2_set_gsl_source_select,
166 		.set_vtg_params = optc1_set_vtg_params,
167 		.program_manual_trigger = optc2_program_manual_trigger,
168 		.setup_manual_trigger = optc301_setup_manual_trigger,
169 		.get_hw_timing = optc1_get_hw_timing,
170 		.wait_drr_doublebuffer_pending_clear = optc3_wait_drr_doublebuffer_pending_clear,
171 };
172 
173 void dcn301_timing_generator_init(struct optc *optc1)
174 {
175 	optc1->base.funcs = &dcn30_tg_funcs;
176 
177 	optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
178 	optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
179 
180 	optc1->min_h_blank = 32;
181 	optc1->min_v_blank = 3;
182 	optc1->min_v_blank_interlace = 5;
183 	optc1->min_h_sync_width = 4;
184 	optc1->min_v_sync_width = 1;
185 }
186