drm/amd/display: Add DCN3.1 OPTC

Add support for programming the DCN3.1 OPTC (Output Timing Controller)

HW Blocks:

    +--------+
    |  MPC   |
    +--------+
        |
        v
    +-------+
    |  OPP  |
    +-------+
        |
        v
    +--------+
    |  OPTC  |
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+

There are no changes to OPP or MPC for DCN3.1, so the diagram will
include them in this patch.
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c

@@ -968,6 +968,17 @@ void optc1_set_drr(
 	}
 }
 
+void optc1_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+	REG_SET(OTG_V_TOTAL_MAX, 0,
+		OTG_V_TOTAL_MAX, vtotal_max);
+
+	REG_SET(OTG_V_TOTAL_MIN, 0,
+		OTG_V_TOTAL_MIN, vtotal_min);
+}
+
 static void optc1_set_test_pattern(
 	struct timing_generator *optc,
 	/* TODO: replace 'controller_dp_test_pattern' by 'test_pattern_mode'

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h

@@ -666,6 +666,8 @@ void optc1_set_drr(
 	struct timing_generator *optc,
 	const struct drr_params *params);
 
+void optc1_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max);
+
 void optc1_set_static_screen_control(
 	struct timing_generator *optc,
 	uint32_t event_triggers,

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_optc.c

+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "dcn31_optc.h"
+
+#include "dcn30/dcn30_optc.h"
+#include "reg_helper.h"
+#include "dc.h"
+#include "dcn_calc_math.h"
+
+#define REG(reg)\
+	optc1->tg_regs->reg
+
+#define CTX \
+	optc1->base.ctx
+
+#undef FN
+#define FN(reg_name, field_name) \
+	optc1->tg_shift->field_name, optc1->tg_mask->field_name
+
+static void optc31_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt,
+		struct dc_crtc_timing *timing)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+	int mpcc_hactive = (timing->h_addressable + timing->h_border_left + timing->h_border_right)
+			/ opp_cnt;
+	uint32_t memory_mask = 0;
+	int mem_count_per_opp = (mpcc_hactive + 2559) / 2560;
+
+	/* Assume less than 6 pipes */
+	if (opp_cnt == 4) {
+		if (mem_count_per_opp == 1)
+			memory_mask = 0xf;
+		else {
+			ASSERT(mem_count_per_opp == 2);
+			memory_mask = 0xff;
+		}
+	} else if (mem_count_per_opp == 1)
+		memory_mask = 0x1 << (opp_id[0] * 2) | 0x1 << (opp_id[1] * 2);
+	else if (mem_count_per_opp == 2)
+		memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2);
+	else if (mem_count_per_opp == 3)
+		memory_mask = 0x77;
+	else if (mem_count_per_opp == 4)
+		memory_mask = 0xff;
+
+	if (REG(OPTC_MEMORY_CONFIG))
+		REG_SET(OPTC_MEMORY_CONFIG, 0,
+			OPTC_MEM_SEL, memory_mask);
+
+	if (opp_cnt == 2) {
+		REG_SET_3(OPTC_DATA_SOURCE_SELECT, 0,
+				OPTC_NUM_OF_INPUT_SEGMENT, 1,
+				OPTC_SEG0_SRC_SEL, opp_id[0],
+				OPTC_SEG1_SRC_SEL, opp_id[1]);
+	} else if (opp_cnt == 4) {
+		REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
+				OPTC_NUM_OF_INPUT_SEGMENT, 3,
+				OPTC_SEG0_SRC_SEL, opp_id[0],
+				OPTC_SEG1_SRC_SEL, opp_id[1],
+				OPTC_SEG2_SRC_SEL, opp_id[2],
+				OPTC_SEG3_SRC_SEL, opp_id[3]);
+	}
+
+	REG_UPDATE(OPTC_WIDTH_CONTROL,
+			OPTC_SEGMENT_WIDTH, mpcc_hactive);
+
+	REG_SET(OTG_H_TIMING_CNTL, 0, OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
+	optc1->opp_count = opp_cnt;
+}
+
+/**
+ * Enable CRTC
+ * Enable CRTC - call ASIC Control Object to enable Timing generator.
+ */
+static bool optc31_enable_crtc(struct timing_generator *optc)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+	/* opp instance for OTG, 1 to 1 mapping and odm will adjust */
+	REG_UPDATE(OPTC_DATA_SOURCE_SELECT,
+			OPTC_SEG0_SRC_SEL, optc->inst);
+
+	/* VTG enable first is for HW workaround */
+	REG_UPDATE(CONTROL,
+			VTG0_ENABLE, 1);
+
+	REG_SEQ_START();
+
+	/* Enable CRTC */
+	REG_UPDATE_2(OTG_CONTROL,
+			OTG_DISABLE_POINT_CNTL, 2,
+			OTG_MASTER_EN, 1);
+
+	REG_SEQ_SUBMIT();
+	REG_SEQ_WAIT_DONE();
+
+	return true;
+}
+
+/* disable_crtc - call ASIC Control Object to disable Timing generator. */
+static bool optc31_disable_crtc(struct timing_generator *optc)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+	/* disable otg request until end of the first line
+	 * in the vertical blank region
+	 */
+	REG_UPDATE(OTG_CONTROL,
+			OTG_MASTER_EN, 0);
+
+	REG_UPDATE(CONTROL,
+			VTG0_ENABLE, 0);
+
+	/* CRTC disabled, so disable  clock. */
+	REG_WAIT(OTG_CLOCK_CONTROL,
+			OTG_BUSY, 0,
+			1, 100000);
+
+	return true;
+}
+
+static bool optc31_immediate_disable_crtc(struct timing_generator *optc)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+	REG_UPDATE_2(OTG_CONTROL,
+			OTG_DISABLE_POINT_CNTL, 0,
+			OTG_MASTER_EN, 0);
+
+	REG_UPDATE(CONTROL,
+			VTG0_ENABLE, 0);
+
+	/* CRTC disabled, so disable  clock. */
+	REG_WAIT(OTG_CLOCK_CONTROL,
+			OTG_BUSY, 0,
+			1, 100000);
+
+	return true;
+}
+
+static void optc31_set_drr(
+	struct timing_generator *optc,
+	const struct drr_params *params)
+{
+	struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+	if (params != NULL &&
+		params->vertical_total_max > 0 &&
+		params->vertical_total_min > 0) {
+
+		if (params->vertical_total_mid != 0) {
+
+			REG_SET(OTG_V_TOTAL_MID, 0,
+				OTG_V_TOTAL_MID, params->vertical_total_mid - 1);
+
+			REG_UPDATE_2(OTG_V_TOTAL_CONTROL,
+					OTG_VTOTAL_MID_REPLACING_MAX_EN, 1,
+					OTG_VTOTAL_MID_FRAME_NUM,
+					(uint8_t)params->vertical_total_mid_frame_num);
+
+		}
+
+		optc->funcs->set_vtotal_min_max(optc, params->vertical_total_min - 1, params->vertical_total_max - 1);
+
+		/*
+		 * MIN_MASK_EN is gone and MASK is now always enabled.
+		 *
+		 * To get it to it work with manual trigger we need to make sure
+		 * we program the correct bit.
+		 */
+		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
+				OTG_V_TOTAL_MIN_SEL, 1,
+				OTG_V_TOTAL_MAX_SEL, 1,
+				OTG_FORCE_LOCK_ON_EVENT, 0,
+				OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */
+
+		// Setup manual flow control for EOF via TRIG_A
+		optc->funcs->setup_manual_trigger(optc);
+
+	} else {
+		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
+				OTG_SET_V_TOTAL_MIN_MASK, 0,
+				OTG_V_TOTAL_MIN_SEL, 0,
+				OTG_V_TOTAL_MAX_SEL, 0,
+				OTG_FORCE_LOCK_ON_EVENT, 0);
+
+		optc->funcs->set_vtotal_min_max(optc, 0, 0);
+	}
+}
+
+static struct timing_generator_funcs dcn31_tg_funcs = {
+		.validate_timing = optc1_validate_timing,
+		.program_timing = optc1_program_timing,
+		.setup_vertical_interrupt0 = optc1_setup_vertical_interrupt0,
+		.setup_vertical_interrupt1 = optc1_setup_vertical_interrupt1,
+		.setup_vertical_interrupt2 = optc1_setup_vertical_interrupt2,
+		.program_global_sync = optc1_program_global_sync,
+		.enable_crtc = optc31_enable_crtc,
+		.disable_crtc = optc31_disable_crtc,
+		.immediate_disable_crtc = optc31_immediate_disable_crtc,
+		/* used by enable_timing_synchronization. Not need for FPGA */
+		.is_counter_moving = optc1_is_counter_moving,
+		.get_position = optc1_get_position,
+		.get_frame_count = optc1_get_vblank_counter,
+		.get_scanoutpos = optc1_get_crtc_scanoutpos,
+		.get_otg_active_size = optc1_get_otg_active_size,
+		.set_early_control = optc1_set_early_control,
+		/* used by enable_timing_synchronization. Not need for FPGA */
+		.wait_for_state = optc1_wait_for_state,
+		.set_blank_color = optc3_program_blank_color,
+		.did_triggered_reset_occur = optc1_did_triggered_reset_occur,
+		.triplebuffer_lock = optc3_triplebuffer_lock,
+		.triplebuffer_unlock = optc2_triplebuffer_unlock,
+		.enable_reset_trigger = optc1_enable_reset_trigger,
+		.enable_crtc_reset = optc1_enable_crtc_reset,
+		.disable_reset_trigger = optc1_disable_reset_trigger,
+		.lock = optc3_lock,
+		.is_locked = optc1_is_locked,
+		.unlock = optc1_unlock,
+		.lock_doublebuffer_enable = optc3_lock_doublebuffer_enable,
+		.lock_doublebuffer_disable = optc3_lock_doublebuffer_disable,
+		.enable_optc_clock = optc1_enable_optc_clock,
+		.set_drr = optc31_set_drr,
+		.set_vtotal_min_max = optc1_set_vtotal_min_max,
+		.set_static_screen_control = optc1_set_static_screen_control,
+		.program_stereo = optc1_program_stereo,
+		.is_stereo_left_eye = optc1_is_stereo_left_eye,
+		.tg_init = optc3_tg_init,
+		.is_tg_enabled = optc1_is_tg_enabled,
+		.is_optc_underflow_occurred = optc1_is_optc_underflow_occurred,
+		.clear_optc_underflow = optc1_clear_optc_underflow,
+		.setup_global_swap_lock = NULL,
+		.get_crc = optc1_get_crc,
+		.configure_crc = optc2_configure_crc,
+		.set_dsc_config = optc3_set_dsc_config,
+		.set_dwb_source = NULL,
+		.set_odm_bypass = optc3_set_odm_bypass,
+		.set_odm_combine = optc31_set_odm_combine,
+		.get_optc_source = optc2_get_optc_source,
+		.set_out_mux = optc3_set_out_mux,
+		.set_drr_trigger_window = optc3_set_drr_trigger_window,
+		.set_vtotal_change_limit = optc3_set_vtotal_change_limit,
+		.set_gsl = optc2_set_gsl,
+		.set_gsl_source_select = optc2_set_gsl_source_select,
+		.set_vtg_params = optc1_set_vtg_params,
+		.program_manual_trigger = optc2_program_manual_trigger,
+		.setup_manual_trigger = optc2_setup_manual_trigger,
+		.get_hw_timing = optc1_get_hw_timing,
+};
+
+void dcn31_timing_generator_init(struct optc *optc1)
+{
+	optc1->base.funcs = &dcn31_tg_funcs;
+
+	optc1->max_h_total = optc1->tg_mask->OTG_H_TOTAL + 1;
+	optc1->max_v_total = optc1->tg_mask->OTG_V_TOTAL + 1;
+
+	optc1->min_h_blank = 32;
+	optc1->min_v_blank = 3;
+	optc1->min_v_blank_interlace = 5;
+	optc1->min_h_sync_width = 4;
+	optc1->min_v_sync_width = 1;
+}
+

drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h

@@ -173,6 +173,9 @@ struct timing_generator_funcs {
 
 	bool (*enable_crtc)(struct timing_generator *tg);
 	bool (*disable_crtc)(struct timing_generator *tg);
+#if defined(CONFIG_DRM_AMD_DC_DCN3_1)
+	bool (*immediate_disable_crtc)(struct timing_generator *tg);
+#endif
 	bool (*is_counter_moving)(struct timing_generator *tg);
 	void (*get_position)(struct timing_generator *tg,
 				struct crtc_position *position);
@@ -223,6 +226,7 @@ struct timing_generator_funcs {
 	void (*enable_advanced_request)(struct timing_generator *tg,
 					bool enable, const struct dc_crtc_timing *timing);
 	void (*set_drr)(struct timing_generator *tg, const struct drr_params *params);
+	void (*set_vtotal_min_max)(struct timing_generator *optc, int vtotal_min, int vtotal_max);
 	void (*set_static_screen_control)(struct timing_generator *tg,
 						uint32_t event_triggers,
 						uint32_t num_frames);