drivers/gpu/drm/amd/display/dc/dcn201/dcn201_link_encoder.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 "reg_helper.h"

#include "core_types.h"
#include "link_encoder.h"
#include "dcn201_link_encoder.h"
#include "stream_encoder.h"
#include "dc_bios_types.h"

#include "gpio_service_interface.h"

#define CTX \
	enc10->base.ctx

#define DC_LOGGER \
	enc10->base.ctx->logger

#define REG(reg)\
	(enc10->link_regs->reg)

#undef FN
#define FN(reg_name, field_name) \
	enc10->link_shift->field_name, enc10->link_mask->field_name

#define IND_REG(index) \
	(enc10->link_regs->index)

static void dcn201_link_encoder_get_max_link_cap(struct link_encoder *enc,
						 struct dc_link_settings *link_settings)
{
	uint32_t value1, value2;
	struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);

	dcn10_link_encoder_get_max_link_cap(enc, link_settings);
	REG_GET_2(RDPCSTX_PHY_CNTL2, RDPCS_PHY_DPALT_DISABLE, &value1,
		 RDPCS_PHY_DPALT_DP4, &value2);
	/*limit to combo_phy*/
	if (enc->usbc_combo_phy) {
		if (!value1 && !value2 && link_settings->lane_count > LANE_COUNT_TWO)
			link_settings->lane_count = LANE_COUNT_TWO;
	}
}

static bool dcn201_link_encoder_is_in_alt_mode(struct link_encoder *enc)
{
	uint32_t value;
	struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);

	REG_GET(RDPCSTX_PHY_CNTL2, RDPCS_PHY_DPALT_DISABLE, &value);

	// if value == 1 alt mode is disabled, otherwise it is enabled
	return !value;
}

static const struct link_encoder_funcs dcn201_link_enc_funcs = {
	.read_state = link_enc2_read_state,
	.validate_output_with_stream =
		dcn10_link_encoder_validate_output_with_stream,
	.hw_init = enc2_hw_init,
	.setup = dcn10_link_encoder_setup,
	.enable_tmds_output = dcn10_link_encoder_enable_tmds_output,
	.enable_dp_output = dcn10_link_encoder_enable_dp_output,
	.enable_dp_mst_output = dcn10_link_encoder_enable_dp_mst_output,
	.disable_output = dcn10_link_encoder_disable_output,
	.dp_set_lane_settings = dcn10_link_encoder_dp_set_lane_settings,
	.dp_set_phy_pattern = dcn10_link_encoder_dp_set_phy_pattern,
	.update_mst_stream_allocation_table =
		dcn10_link_encoder_update_mst_stream_allocation_table,
	.psr_program_dp_dphy_fast_training =
			dcn10_psr_program_dp_dphy_fast_training,
	.psr_program_secondary_packet = dcn10_psr_program_secondary_packet,
	.connect_dig_be_to_fe = dcn10_link_encoder_connect_dig_be_to_fe,
	.enable_hpd = dcn10_link_encoder_enable_hpd,
	.disable_hpd = dcn10_link_encoder_disable_hpd,
	.is_dig_enabled = dcn10_is_dig_enabled,
	.destroy = dcn10_link_encoder_destroy,
	.fec_set_enable = enc2_fec_set_enable,
	.fec_set_ready = enc2_fec_set_ready,
	.get_dig_frontend = dcn10_get_dig_frontend,
	.fec_is_active = enc2_fec_is_active,
	.is_in_alt_mode = dcn201_link_encoder_is_in_alt_mode,
	.get_max_link_cap = dcn201_link_encoder_get_max_link_cap,
};

void dcn201_link_encoder_construct(
	struct dcn20_link_encoder *enc20,
	const struct encoder_init_data *init_data,
	const struct encoder_feature_support *enc_features,
	const struct dcn10_link_enc_registers *link_regs,
	const struct dcn10_link_enc_aux_registers *aux_regs,
	const struct dcn10_link_enc_hpd_registers *hpd_regs,
	const struct dcn10_link_enc_shift *link_shift,
	const struct dcn10_link_enc_mask *link_mask)
{
	struct bp_encoder_cap_info bp_cap_info = {0};
	const struct dc_vbios_funcs *bp_funcs = init_data->ctx->dc_bios->funcs;
	enum bp_result result = BP_RESULT_OK;
	struct dcn10_link_encoder *enc10 = &enc20->enc10;

	enc10->base.funcs = &dcn201_link_enc_funcs;
	enc10->base.ctx = init_data->ctx;
	enc10->base.id = init_data->encoder;

	enc10->base.hpd_source = init_data->hpd_source;
	enc10->base.connector = init_data->connector;

	enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;

	enc10->base.features = *enc_features;

	enc10->base.transmitter = init_data->transmitter;

	/* set the flag to indicate whether driver poll the I2C data pin
	 * while doing the DP sink detect
	 */

	/* if (dal_adapter_service_is_feature_supported(as,
	 * FEATURE_DP_SINK_DETECT_POLL_DATA_PIN))
	 * enc10->base.features.flags.bits.
	 * DP_SINK_DETECT_POLL_DATA_PIN = true;
	 */

	enc10->base.output_signals =
		SIGNAL_TYPE_DVI_SINGLE_LINK |
		SIGNAL_TYPE_DVI_DUAL_LINK |
		SIGNAL_TYPE_LVDS |
		SIGNAL_TYPE_DISPLAY_PORT |
		SIGNAL_TYPE_DISPLAY_PORT_MST |
		SIGNAL_TYPE_EDP |
		SIGNAL_TYPE_HDMI_TYPE_A;

	/* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE.
	 * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY.
	 * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer
	 * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS.
	 * Prefer DIG assignment is decided by board design.
	 * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design
	 * and VBIOS will filter out 7 UNIPHY for DCE 8.0.
	 * By this, adding DIGG should not hurt DCE 8.0.
	 * This will let DCE 8.1 share DCE 8.0 as much as possible
	 */

	enc10->link_regs = link_regs;
	enc10->aux_regs = aux_regs;
	enc10->hpd_regs = hpd_regs;
	enc10->link_shift = link_shift;
	enc10->link_mask = link_mask;

	switch (enc10->base.transmitter) {
	case TRANSMITTER_UNIPHY_A:
		enc10->base.preferred_engine = ENGINE_ID_DIGA;
	break;
	case TRANSMITTER_UNIPHY_B:
		enc10->base.preferred_engine = ENGINE_ID_DIGB;
	break;
	default:
		ASSERT_CRITICAL(false);
		enc10->base.preferred_engine = ENGINE_ID_UNKNOWN;
	}

	/* default to one to mirror Windows behavior */
	enc10->base.features.flags.bits.HDMI_6GB_EN = 1;

	result = bp_funcs->get_encoder_cap_info(enc10->base.ctx->dc_bios,
						enc10->base.id, &bp_cap_info);

	/* Override features with DCE-specific values */
	if (result == BP_RESULT_OK) {
		enc10->base.features.flags.bits.IS_HBR2_CAPABLE =
				bp_cap_info.DP_HBR2_EN;
		enc10->base.features.flags.bits.IS_HBR3_CAPABLE =
				bp_cap_info.DP_HBR3_EN;
		enc10->base.features.flags.bits.HDMI_6GB_EN = bp_cap_info.HDMI_6GB_EN;
		enc10->base.features.flags.bits.DP_IS_USB_C =
				bp_cap_info.DP_IS_USB_C;
	} else {
		DC_LOG_WARNING("%s: Failed to get encoder_cap_info from VBIOS with error code %d!\n",
				__func__,
				result);
	}
	if (enc10->base.ctx->dc->debug.hdmi20_disable) {
		enc10->base.features.flags.bits.HDMI_6GB_EN = 0;
	}
}