drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c - linux - Git at Google

 /*
  * Copyright 2022 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 "dcn32_optc.h"

 #include "dcn30/dcn30_optc.h"
 #include "dcn31/dcn31_optc.h"
 #include "reg_helper.h"
 #include "dc.h"
 #include "dcn_calc_math.h"
 #include "dc_dmub_srv.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 optc32_set_odm_combine(struct timing_generator *optc, int *opp_id, int opp_cnt,
 		int segment_width, int last_segment_width)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 	uint32_t memory_mask = 0;
 	int h_active = segment_width * opp_cnt;
 	/* Each memory instance is 2048x(32x2) bits to support half line of 4096 */
 	int odm_mem_count = (h_active + 2047) / 2048;

 	/*
 	 * display <= 4k : 2 memories + 2 pipes
 	 * 4k < display <= 8k : 4 memories + 2 pipes
 	 * 8k < display <= 12k : 6 memories + 4 pipes
 	 */
 	if (opp_cnt == 4) {
 		if (odm_mem_count <= 2)
 			memory_mask = 0x3;
 		else if (odm_mem_count <= 4)
 			memory_mask = 0xf;
 		else
 			memory_mask = 0x3f;
 	} else {
 		if (odm_mem_count <= 2)
 			memory_mask = 0x1 << (opp_id[0] * 2) | 0x1 << (opp_id[1] * 2);
 		else if (odm_mem_count <= 4)
 			memory_mask = 0x3 << (opp_id[0] * 2) | 0x3 << (opp_id[1] * 2);
 		else
 			memory_mask = 0x77;
 	}

 	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, segment_width);

 	REG_UPDATE(OTG_H_TIMING_CNTL,
 			OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
 	optc1->opp_count = opp_cnt;
 }

 void optc32_get_odm_combine_segments(struct timing_generator *tg, int *odm_combine_segments)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(tg);
 	int segments;

 	REG_GET(OPTC_DATA_SOURCE_SELECT, OPTC_NUM_OF_INPUT_SEGMENT, &segments);

 	switch (segments) {
 	case 0:
 		*odm_combine_segments = 1;
 		break;
 	case 1:
 		*odm_combine_segments = 2;
 		break;
 	case 3:
 		*odm_combine_segments = 4;
 		break;
 	/* 2 is reserved */
 	case 2:
 	default:
 		*odm_combine_segments = -1;
 	}
 }

 void optc32_wait_odm_doublebuffer_pending_clear(struct timing_generator *tg)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(tg);

 	REG_WAIT(OTG_DOUBLE_BUFFER_CONTROL, OTG_H_TIMING_DIV_MODE_DB_UPDATE_PENDING, 0, 2, 50000);
 }

 void optc32_set_h_timing_div_manual_mode(struct timing_generator *optc, bool manual_mode)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);

 	REG_UPDATE(OTG_H_TIMING_CNTL,
 			OTG_H_TIMING_DIV_MODE_MANUAL, manual_mode ? 1 : 0);
 }
 /**
  * optc32_enable_crtc() - Enable CRTC - call ASIC Control Object to enable Timing generator.
  *
  * @optc: timing_generator instance.
  *
  * Return: If CRTC is enabled, return true.
  */
 static bool optc32_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 */
 static bool optc32_disable_crtc(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);

 	REG_UPDATE_5(OPTC_DATA_SOURCE_SELECT,
 			OPTC_SEG0_SRC_SEL, 0xf,
 			OPTC_SEG1_SRC_SEL, 0xf,
 			OPTC_SEG2_SRC_SEL, 0xf,
 			OPTC_SEG3_SRC_SEL, 0xf,
 			OPTC_NUM_OF_INPUT_SEGMENT, 0);

 	REG_UPDATE(OPTC_MEMORY_CONFIG,
 			OPTC_MEM_SEL, 0);

 	/* 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, 150000);

 	return true;
 }

 static void optc32_phantom_crtc_post_enable(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);

 	/* Disable immediately. */
 	REG_UPDATE_2(OTG_CONTROL, OTG_DISABLE_POINT_CNTL, 0, OTG_MASTER_EN, 0);

 	/* CRTC disabled, so disable  clock. */
 	REG_WAIT(OTG_CLOCK_CONTROL, OTG_BUSY, 0, 1, 100000);
 }

 static void optc32_disable_phantom_otg(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);

 	REG_UPDATE_5(OPTC_DATA_SOURCE_SELECT,
 			OPTC_SEG0_SRC_SEL, 0xf,
 			OPTC_SEG1_SRC_SEL, 0xf,
 			OPTC_SEG2_SRC_SEL, 0xf,
 			OPTC_SEG3_SRC_SEL, 0xf,
 			OPTC_NUM_OF_INPUT_SEGMENT, 0);

 	REG_UPDATE(OTG_CONTROL, OTG_MASTER_EN, 0);
 }

 void optc32_set_odm_bypass(struct timing_generator *optc,
 		const struct dc_crtc_timing *dc_crtc_timing)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 	enum h_timing_div_mode h_div = H_TIMING_NO_DIV;

 	REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
 			OPTC_NUM_OF_INPUT_SEGMENT, 0,
 			OPTC_SEG0_SRC_SEL, optc->inst,
 			OPTC_SEG1_SRC_SEL, 0xf,
 			OPTC_SEG2_SRC_SEL, 0xf,
 			OPTC_SEG3_SRC_SEL, 0xf
 			);

 	h_div = optc->funcs->is_two_pixels_per_container(dc_crtc_timing);
 	REG_UPDATE(OTG_H_TIMING_CNTL,
 			OTG_H_TIMING_DIV_MODE, h_div);

 	REG_SET(OPTC_MEMORY_CONFIG, 0,
 			OPTC_MEM_SEL, 0);
 	optc1->opp_count = 1;
 }

 static void optc32_setup_manual_trigger(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 	struct dc *dc = optc->ctx->dc;

 	if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams)
 		dc_dmub_srv_set_drr_manual_trigger_cmd(dc, optc->inst);
 	else {
 		/*
 		 * 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 */
 	}
 }

 static void optc32_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);
 	}

 	optc32_setup_manual_trigger(optc);
 }

 bool optc32_get_double_buffer_pending(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 	uint32_t update_pending = 0;

 	REG_GET(OPTC_INPUT_GLOBAL_CONTROL,
 			OPTC_DOUBLE_BUFFER_PENDING,
 			&update_pending);

 	return (update_pending == 1);
 }

 static struct timing_generator_funcs dcn32_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 = optc32_enable_crtc,
 		.disable_crtc = optc32_disable_crtc,
 		.phantom_crtc_post_enable = optc32_phantom_crtc_post_enable,
 		.disable_phantom_crtc = optc32_disable_phantom_otg,
 		/* 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,
 		.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 = optc32_set_drr,
 		.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
 		.set_vtotal_min_max = optc3_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 = optc1_configure_crc,
 		.set_dsc_config = optc3_set_dsc_config,
 		.get_dsc_status = optc2_get_dsc_status,
 		.set_dwb_source = NULL,
 		.set_odm_bypass = optc32_set_odm_bypass,
 		.set_odm_combine = optc32_set_odm_combine,
 		.get_odm_combine_segments = optc32_get_odm_combine_segments,
 		.wait_odm_doublebuffer_pending_clear = optc32_wait_odm_doublebuffer_pending_clear,
 		.set_h_timing_div_manual_mode = optc32_set_h_timing_div_manual_mode,
 		.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,
 		.is_two_pixels_per_container = optc1_is_two_pixels_per_container,
 		.get_double_buffer_pending = optc32_get_double_buffer_pending,
 };

 void dcn32_timing_generator_init(struct optc *optc1)
 {
 	optc1->base.funcs = &dcn32_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;
 }
	/*
	* Copyright 2022 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 "dcn32_optc.h"

	#include "dcn30/dcn30_optc.h"
	#include "dcn31/dcn31_optc.h"
	#include "reg_helper.h"
	#include "dc.h"
	#include "dcn_calc_math.h"
	#include "dc_dmub_srv.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 optc32_set_odm_combine(struct timing_generator optc, int opp_id, int opp_cnt,
	int segment_width, int last_segment_width)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);
	uint32_t memory_mask = 0;
	int h_active = segment_width * opp_cnt;
	/* Each memory instance is 2048x(32x2) bits to support half line of 4096 */
	int odm_mem_count = (h_active + 2047) / 2048;

	/*
	* display <= 4k : 2 memories + 2 pipes
	* 4k < display <= 8k : 4 memories + 2 pipes
	* 8k < display <= 12k : 6 memories + 4 pipes
	*/
	if (opp_cnt == 4) {
	if (odm_mem_count <= 2)
	memory_mask = 0x3;
	else if (odm_mem_count <= 4)
	memory_mask = 0xf;
	else
	memory_mask = 0x3f;
	} else {
	if (odm_mem_count <= 2)
	memory_mask = 0x1 << (opp_id[0] * 2) \| 0x1 << (opp_id[1] * 2);
	else if (odm_mem_count <= 4)
	memory_mask = 0x3 << (opp_id[0] * 2) \| 0x3 << (opp_id[1] * 2);
	else
	memory_mask = 0x77;
	}

	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, segment_width);

	REG_UPDATE(OTG_H_TIMING_CNTL,
	OTG_H_TIMING_DIV_MODE, opp_cnt - 1);
	optc1->opp_count = opp_cnt;
	}

	void optc32_get_odm_combine_segments(struct timing_generator tg, int odm_combine_segments)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(tg);
	int segments;

	REG_GET(OPTC_DATA_SOURCE_SELECT, OPTC_NUM_OF_INPUT_SEGMENT, &segments);

	switch (segments) {
	case 0:
	*odm_combine_segments = 1;
	break;
	case 1:
	*odm_combine_segments = 2;
	break;
	case 3:
	*odm_combine_segments = 4;
	break;
	/* 2 is reserved */
	case 2:
	default:
	*odm_combine_segments = -1;
	}
	}

	void optc32_wait_odm_doublebuffer_pending_clear(struct timing_generator *tg)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(tg);

	REG_WAIT(OTG_DOUBLE_BUFFER_CONTROL, OTG_H_TIMING_DIV_MODE_DB_UPDATE_PENDING, 0, 2, 50000);
	}

	void optc32_set_h_timing_div_manual_mode(struct timing_generator *optc, bool manual_mode)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);

	REG_UPDATE(OTG_H_TIMING_CNTL,
	OTG_H_TIMING_DIV_MODE_MANUAL, manual_mode ? 1 : 0);
	}
	/**
	* optc32_enable_crtc() - Enable CRTC - call ASIC Control Object to enable Timing generator.
	*
	* @optc: timing_generator instance.
	*
	* Return: If CRTC is enabled, return true.
	*/
	static bool optc32_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 */
	static bool optc32_disable_crtc(struct timing_generator *optc)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);

	REG_UPDATE_5(OPTC_DATA_SOURCE_SELECT,
	OPTC_SEG0_SRC_SEL, 0xf,
	OPTC_SEG1_SRC_SEL, 0xf,
	OPTC_SEG2_SRC_SEL, 0xf,
	OPTC_SEG3_SRC_SEL, 0xf,
	OPTC_NUM_OF_INPUT_SEGMENT, 0);

	REG_UPDATE(OPTC_MEMORY_CONFIG,
	OPTC_MEM_SEL, 0);

	/* 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, 150000);

	return true;
	}

	static void optc32_phantom_crtc_post_enable(struct timing_generator *optc)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);

	/* Disable immediately. */
	REG_UPDATE_2(OTG_CONTROL, OTG_DISABLE_POINT_CNTL, 0, OTG_MASTER_EN, 0);

	/* CRTC disabled, so disable clock. */
	REG_WAIT(OTG_CLOCK_CONTROL, OTG_BUSY, 0, 1, 100000);
	}

	static void optc32_disable_phantom_otg(struct timing_generator *optc)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);

	REG_UPDATE_5(OPTC_DATA_SOURCE_SELECT,
	OPTC_SEG0_SRC_SEL, 0xf,
	OPTC_SEG1_SRC_SEL, 0xf,
	OPTC_SEG2_SRC_SEL, 0xf,
	OPTC_SEG3_SRC_SEL, 0xf,
	OPTC_NUM_OF_INPUT_SEGMENT, 0);

	REG_UPDATE(OTG_CONTROL, OTG_MASTER_EN, 0);
	}

	void optc32_set_odm_bypass(struct timing_generator *optc,
	const struct dc_crtc_timing *dc_crtc_timing)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);
	enum h_timing_div_mode h_div = H_TIMING_NO_DIV;

	REG_SET_5(OPTC_DATA_SOURCE_SELECT, 0,
	OPTC_NUM_OF_INPUT_SEGMENT, 0,
	OPTC_SEG0_SRC_SEL, optc->inst,
	OPTC_SEG1_SRC_SEL, 0xf,
	OPTC_SEG2_SRC_SEL, 0xf,
	OPTC_SEG3_SRC_SEL, 0xf
	);

	h_div = optc->funcs->is_two_pixels_per_container(dc_crtc_timing);
	REG_UPDATE(OTG_H_TIMING_CNTL,
	OTG_H_TIMING_DIV_MODE, h_div);

	REG_SET(OPTC_MEMORY_CONFIG, 0,
	OPTC_MEM_SEL, 0);
	optc1->opp_count = 1;
	}

	static void optc32_setup_manual_trigger(struct timing_generator *optc)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);
	struct dc *dc = optc->ctx->dc;

	if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams)
	dc_dmub_srv_set_drr_manual_trigger_cmd(dc, optc->inst);
	else {
	/*
	* 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 */
	}
	}

	static void optc32_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);
	}

	optc32_setup_manual_trigger(optc);
	}

	bool optc32_get_double_buffer_pending(struct timing_generator *optc)
	{
	struct optc *optc1 = DCN10TG_FROM_TG(optc);
	uint32_t update_pending = 0;

	REG_GET(OPTC_INPUT_GLOBAL_CONTROL,
	OPTC_DOUBLE_BUFFER_PENDING,
	&update_pending);

	return (update_pending == 1);
	}

	static struct timing_generator_funcs dcn32_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 = optc32_enable_crtc,
	.disable_crtc = optc32_disable_crtc,
	.phantom_crtc_post_enable = optc32_phantom_crtc_post_enable,
	.disable_phantom_crtc = optc32_disable_phantom_otg,
	/* 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,
	.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 = optc32_set_drr,
	.get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal,
	.set_vtotal_min_max = optc3_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 = optc1_configure_crc,
	.set_dsc_config = optc3_set_dsc_config,
	.get_dsc_status = optc2_get_dsc_status,
	.set_dwb_source = NULL,
	.set_odm_bypass = optc32_set_odm_bypass,
	.set_odm_combine = optc32_set_odm_combine,
	.get_odm_combine_segments = optc32_get_odm_combine_segments,
	.wait_odm_doublebuffer_pending_clear = optc32_wait_odm_doublebuffer_pending_clear,
	.set_h_timing_div_manual_mode = optc32_set_h_timing_div_manual_mode,
	.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,
	.is_two_pixels_per_container = optc1_is_two_pixels_per_container,
	.get_double_buffer_pending = optc32_get_double_buffer_pending,
	};

	void dcn32_timing_generator_init(struct optc *optc1)
	{
	optc1->base.funcs = &dcn32_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;
	}