From: Harry Wentland <harry.wentland@amd.com>
Date: Fri, 22 Feb 2019 14:45:07 +0000 (-0500)
Subject: drm/amd/display: Add GPIO support for DCN2
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2e35facf82bcdd9b9eb9129f4fb31127b79249ec;p=openwrt%2Fstaging%2Fblogic.git

drm/amd/display: Add GPIO support for DCN2

Adding support to program GPIO HW block of DCN2

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/gpio/Makefile b/drivers/gpu/drm/amd/display/dc/gpio/Makefile
index 562ee189d780..c3d92878875d 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/gpio/Makefile
@@ -69,6 +69,17 @@ AMD_DAL_GPIO_DCN10 = $(addprefix $(AMDDALPATH)/dc/gpio/dcn10/,$(GPIO_DCN10))
 AMD_DISPLAY_FILES += $(AMD_DAL_GPIO_DCN10)
 endif
 
+###############################################################################
+# DCN 2
+###############################################################################
+ifdef CONFIG_DRM_AMD_DC_DCN2_0
+GPIO_DCN20 = hw_translate_dcn20.o hw_factory_dcn20.o
+
+AMD_DAL_GPIO_DCN20 = $(addprefix $(AMDDALPATH)/dc/gpio/dcn20/,$(GPIO_DCN20))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_GPIO_DCN20)
+endif
+
 ###############################################################################
 # Diagnostics on FPGA
 ###############################################################################
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
new file mode 100644
index 000000000000..abd76d855375
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2013-15 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
+ *
+ */
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#include "dm_services.h"
+#include "include/gpio_types.h"
+#include "../hw_factory.h"
+
+
+#include "../hw_gpio.h"
+#include "../hw_ddc.h"
+#include "../hw_hpd.h"
+
+#include "hw_factory_dcn20.h"
+
+
+#include "dcn/dcn_2_0_0_offset.h"
+#include "dcn/dcn_2_0_0_sh_mask.h"
+#include "navi10_ip_offset.h"
+
+
+#include "reg_helper.h"
+#include "../hpd_regs.h"
+/* begin *********************
+ * macros to expend register list macro defined in HW object header file */
+
+/* DCN */
+#define block HPD
+#define reg_num 0
+
+#undef BASE_INNER
+#define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg
+
+#define BASE(seg) BASE_INNER(seg)
+
+
+
+#define REG(reg_name)\
+		BASE(mm ## reg_name ## _BASE_IDX) + mm ## reg_name
+
+#define SF_HPD(reg_name, field_name, post_fix)\
+	.field_name = HPD0_ ## reg_name ## __ ## field_name ## post_fix
+
+#define REGI(reg_name, block, id)\
+	BASE(mm ## block ## id ## _ ## reg_name ## _BASE_IDX) + \
+				mm ## block ## id ## _ ## reg_name
+
+#define SF(reg_name, field_name, post_fix)\
+	.field_name = reg_name ## __ ## field_name ## post_fix
+
+/* macros to expend register list macro defined in HW object header file
+ * end *********************/
+
+
+
+#define hpd_regs(id) \
+{\
+	HPD_REG_LIST(id)\
+}
+
+static const struct hpd_registers hpd_regs[] = {
+	hpd_regs(0),
+	hpd_regs(1),
+	hpd_regs(2),
+	hpd_regs(3),
+	hpd_regs(4),
+	hpd_regs(5),
+};
+
+static const struct hpd_sh_mask hpd_shift = {
+		HPD_MASK_SH_LIST(__SHIFT)
+};
+
+static const struct hpd_sh_mask hpd_mask = {
+		HPD_MASK_SH_LIST(_MASK)
+};
+
+#include "../ddc_regs.h"
+
+ /* set field name */
+#define SF_DDC(reg_name, field_name, post_fix)\
+	.field_name = reg_name ## __ ## field_name ## post_fix
+
+static const struct ddc_registers ddc_data_regs_dcn[] = {
+	ddc_data_regs_dcn2(1),
+	ddc_data_regs_dcn2(2),
+	ddc_data_regs_dcn2(3),
+	ddc_data_regs_dcn2(4),
+	ddc_data_regs_dcn2(5),
+	ddc_data_regs_dcn2(6),
+};
+
+static const struct ddc_registers ddc_clk_regs_dcn[] = {
+	ddc_clk_regs_dcn2(1),
+	ddc_clk_regs_dcn2(2),
+	ddc_clk_regs_dcn2(3),
+	ddc_clk_regs_dcn2(4),
+	ddc_clk_regs_dcn2(5),
+	ddc_clk_regs_dcn2(6),
+};
+
+static const struct ddc_sh_mask ddc_shift[] = {
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 1),
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 2),
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 3),
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 4),
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 5),
+	DDC_MASK_SH_LIST_DCN2(__SHIFT, 6)
+};
+
+static const struct ddc_sh_mask ddc_mask[] = {
+	DDC_MASK_SH_LIST_DCN2(_MASK, 1),
+	DDC_MASK_SH_LIST_DCN2(_MASK, 2),
+	DDC_MASK_SH_LIST_DCN2(_MASK, 3),
+	DDC_MASK_SH_LIST_DCN2(_MASK, 4),
+	DDC_MASK_SH_LIST_DCN2(_MASK, 5),
+	DDC_MASK_SH_LIST_DCN2(_MASK, 6)
+};
+
+static void define_ddc_registers(
+		struct hw_gpio_pin *pin,
+		uint32_t en)
+{
+	struct hw_ddc *ddc = HW_DDC_FROM_BASE(pin);
+
+	switch (pin->id) {
+	case GPIO_ID_DDC_DATA:
+		ddc->regs = &ddc_data_regs_dcn[en];
+		ddc->base.regs = &ddc_data_regs_dcn[en].gpio;
+		break;
+	case GPIO_ID_DDC_CLOCK:
+		ddc->regs = &ddc_clk_regs_dcn[en];
+		ddc->base.regs = &ddc_clk_regs_dcn[en].gpio;
+		break;
+	default:
+		ASSERT_CRITICAL(false);
+		return;
+	}
+
+	ddc->shifts = &ddc_shift[en];
+	ddc->masks = &ddc_mask[en];
+
+}
+
+static void define_hpd_registers(struct hw_gpio_pin *pin, uint32_t en)
+{
+	struct hw_hpd *hpd = HW_HPD_FROM_BASE(pin);
+
+	hpd->regs = &hpd_regs[en];
+	hpd->shifts = &hpd_shift;
+	hpd->masks = &hpd_mask;
+	hpd->base.regs = &hpd_regs[en].gpio;
+}
+
+
+/* fucntion table */
+static const struct hw_factory_funcs funcs = {
+	.create_ddc_data = dal_hw_ddc_create,
+	.create_ddc_clock = dal_hw_ddc_create,
+	.create_generic = NULL,
+	.create_hpd = dal_hw_hpd_create,
+	.create_sync = NULL,
+	.create_gsl = NULL,
+	.define_hpd_registers = define_hpd_registers,
+	.define_ddc_registers = define_ddc_registers
+};
+/*
+ * dal_hw_factory_dcn10_init
+ *
+ * @brief
+ * Initialize HW factory function pointers and pin info
+ *
+ * @param
+ * struct hw_factory *factory - [out] struct of function pointers
+ */
+void dal_hw_factory_dcn20_init(struct hw_factory *factory)
+{
+	/*TODO check ASIC CAPs*/
+	factory->number_of_pins[GPIO_ID_DDC_DATA] = 8;
+	factory->number_of_pins[GPIO_ID_DDC_CLOCK] = 8;
+	factory->number_of_pins[GPIO_ID_GENERIC] = 4;
+	factory->number_of_pins[GPIO_ID_HPD] = 6;
+	factory->number_of_pins[GPIO_ID_GPIO_PAD] = 28;
+	factory->number_of_pins[GPIO_ID_VIP_PAD] = 0;
+	factory->number_of_pins[GPIO_ID_SYNC] = 0;
+	factory->number_of_pins[GPIO_ID_GSL] = 0;/*add this*/
+
+	factory->funcs = &funcs;
+}
+
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.h b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.h
new file mode 100644
index 000000000000..43a4ce7aa3bf
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_factory_dcn20.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018 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
+ *
+ */
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#ifndef __DAL_HW_FACTORY_DCN20_H__
+#define __DAL_HW_FACTORY_DCN20_H__
+
+/* Initialize HW factory function pointers and pin info */
+void dal_hw_factory_dcn20_init(struct hw_factory *factory);
+
+#endif /* __DAL_HW_FACTORY_DCN20_H__ */
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.c b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.c
new file mode 100644
index 000000000000..b393cc13298a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.c
@@ -0,0 +1,382 @@
+/*
+ * Copyright 2018 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
+ *
+ */
+
+/*
+ * Pre-requisites: headers required by header of this unit
+ */
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#include "hw_translate_dcn20.h"
+
+#include "dm_services.h"
+#include "include/gpio_types.h"
+#include "../hw_translate.h"
+
+#include "dcn/dcn_1_0_offset.h"
+#include "dcn/dcn_1_0_sh_mask.h"
+#include "soc15_hw_ip.h"
+#include "vega10_ip_offset.h"
+
+
+
+/* begin *********************
+ * macros to expend register list macro defined in HW object header file */
+
+/* DCN */
+#define block HPD
+#define reg_num 0
+
+#undef BASE_INNER
+#define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg
+
+#define BASE(seg) BASE_INNER(seg)
+
+#undef REG
+#define REG(reg_name)\
+		BASE(mm ## reg_name ## _BASE_IDX) + mm ## reg_name
+#define SF_HPD(reg_name, field_name, post_fix)\
+	.field_name = reg_name ## __ ## field_name ## post_fix
+
+
+/* macros to expend register list macro defined in HW object header file
+ * end *********************/
+
+
+static bool offset_to_id(
+	uint32_t offset,
+	uint32_t mask,
+	enum gpio_id *id,
+	uint32_t *en)
+{
+	switch (offset) {
+	/* GENERIC */
+	case REG(DC_GENERICA):
+		*id = GPIO_ID_GENERIC;
+		switch (mask) {
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICA_A_MASK:
+			*en = GPIO_GENERIC_A;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICB_A_MASK:
+			*en = GPIO_GENERIC_B;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICC_A_MASK:
+			*en = GPIO_GENERIC_C;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICD_A_MASK:
+			*en = GPIO_GENERIC_D;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICE_A_MASK:
+			*en = GPIO_GENERIC_E;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICF_A_MASK:
+			*en = GPIO_GENERIC_F;
+			return true;
+		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICG_A_MASK:
+			*en = GPIO_GENERIC_G;
+			return true;
+		default:
+			ASSERT_CRITICAL(false);
+			return false;
+		}
+	break;
+	/* HPD */
+	case REG(DC_GPIO_HPD_A):
+		*id = GPIO_ID_HPD;
+		switch (mask) {
+		case DC_GPIO_HPD_A__DC_GPIO_HPD1_A_MASK:
+			*en = GPIO_HPD_1;
+			return true;
+		case DC_GPIO_HPD_A__DC_GPIO_HPD2_A_MASK:
+			*en = GPIO_HPD_2;
+			return true;
+		case DC_GPIO_HPD_A__DC_GPIO_HPD3_A_MASK:
+			*en = GPIO_HPD_3;
+			return true;
+		case DC_GPIO_HPD_A__DC_GPIO_HPD4_A_MASK:
+			*en = GPIO_HPD_4;
+			return true;
+		case DC_GPIO_HPD_A__DC_GPIO_HPD5_A_MASK:
+			*en = GPIO_HPD_5;
+			return true;
+		case DC_GPIO_HPD_A__DC_GPIO_HPD6_A_MASK:
+			*en = GPIO_HPD_6;
+			return true;
+		default:
+			ASSERT_CRITICAL(false);
+			return false;
+		}
+	break;
+	/* REG(DC_GPIO_GENLK_MASK */
+	case REG(DC_GPIO_GENLK_A):
+		*id = GPIO_ID_GSL;
+		switch (mask) {
+		case DC_GPIO_GENLK_A__DC_GPIO_GENLK_CLK_A_MASK:
+			*en = GPIO_GSL_GENLOCK_CLOCK;
+			return true;
+		case DC_GPIO_GENLK_A__DC_GPIO_GENLK_VSYNC_A_MASK:
+			*en = GPIO_GSL_GENLOCK_VSYNC;
+			return true;
+		case DC_GPIO_GENLK_A__DC_GPIO_SWAPLOCK_A_A_MASK:
+			*en = GPIO_GSL_SWAPLOCK_A;
+			return true;
+		case DC_GPIO_GENLK_A__DC_GPIO_SWAPLOCK_B_A_MASK:
+			*en = GPIO_GSL_SWAPLOCK_B;
+			return true;
+		default:
+			ASSERT_CRITICAL(false);
+			return false;
+		}
+	break;
+	/* DDC */
+	/* we don't care about the GPIO_ID for DDC
+	 * in DdcHandle it will use GPIO_ID_DDC_DATA/GPIO_ID_DDC_CLOCK
+	 * directly in the create method */
+	case REG(DC_GPIO_DDC1_A):
+		*en = GPIO_DDC_LINE_DDC1;
+		return true;
+	case REG(DC_GPIO_DDC2_A):
+		*en = GPIO_DDC_LINE_DDC2;
+		return true;
+	case REG(DC_GPIO_DDC3_A):
+		*en = GPIO_DDC_LINE_DDC3;
+		return true;
+	case REG(DC_GPIO_DDC4_A):
+		*en = GPIO_DDC_LINE_DDC4;
+		return true;
+	case REG(DC_GPIO_DDC5_A):
+		*en = GPIO_DDC_LINE_DDC5;
+		return true;
+	case REG(DC_GPIO_DDC6_A):
+		*en = GPIO_DDC_LINE_DDC6;
+		return true;
+	case REG(DC_GPIO_DDCVGA_A):
+		*en = GPIO_DDC_LINE_DDC_VGA;
+		return true;
+
+//	case REG(DC_GPIO_I2CPAD_A): not exit
+//	case REG(DC_GPIO_PWRSEQ_A):
+//	case REG(DC_GPIO_PAD_STRENGTH_1):
+//	case REG(DC_GPIO_PAD_STRENGTH_2):
+//	case REG(DC_GPIO_DEBUG):
+	/* UNEXPECTED */
+	default:
+//	case REG(DC_GPIO_SYNCA_A): not exist
+		ASSERT_CRITICAL(false);
+		return false;
+	}
+}
+
+static bool id_to_offset(
+	enum gpio_id id,
+	uint32_t en,
+	struct gpio_pin_info *info)
+{
+	bool result = true;
+
+	switch (id) {
+	case GPIO_ID_DDC_DATA:
+		info->mask = DC_GPIO_DDC6_A__DC_GPIO_DDC6DATA_A_MASK;
+		switch (en) {
+		case GPIO_DDC_LINE_DDC1:
+			info->offset = REG(DC_GPIO_DDC1_A);
+		break;
+		case GPIO_DDC_LINE_DDC2:
+			info->offset = REG(DC_GPIO_DDC2_A);
+		break;
+		case GPIO_DDC_LINE_DDC3:
+			info->offset = REG(DC_GPIO_DDC3_A);
+		break;
+		case GPIO_DDC_LINE_DDC4:
+			info->offset = REG(DC_GPIO_DDC4_A);
+		break;
+		case GPIO_DDC_LINE_DDC5:
+			info->offset = REG(DC_GPIO_DDC5_A);
+		break;
+		case GPIO_DDC_LINE_DDC6:
+			info->offset = REG(DC_GPIO_DDC6_A);
+		break;
+		case GPIO_DDC_LINE_DDC_VGA:
+			info->offset = REG(DC_GPIO_DDCVGA_A);
+		break;
+		case GPIO_DDC_LINE_I2C_PAD:
+		default:
+			ASSERT_CRITICAL(false);
+			result = false;
+		}
+	break;
+	case GPIO_ID_DDC_CLOCK:
+		info->mask = DC_GPIO_DDC6_A__DC_GPIO_DDC6CLK_A_MASK;
+		switch (en) {
+		case GPIO_DDC_LINE_DDC1:
+			info->offset = REG(DC_GPIO_DDC1_A);
+		break;
+		case GPIO_DDC_LINE_DDC2:
+			info->offset = REG(DC_GPIO_DDC2_A);
+		break;
+		case GPIO_DDC_LINE_DDC3:
+			info->offset = REG(DC_GPIO_DDC3_A);
+		break;
+		case GPIO_DDC_LINE_DDC4:
+			info->offset = REG(DC_GPIO_DDC4_A);
+		break;
+		case GPIO_DDC_LINE_DDC5:
+			info->offset = REG(DC_GPIO_DDC5_A);
+		break;
+		case GPIO_DDC_LINE_DDC6:
+			info->offset = REG(DC_GPIO_DDC6_A);
+		break;
+		case GPIO_DDC_LINE_DDC_VGA:
+			info->offset = REG(DC_GPIO_DDCVGA_A);
+		break;
+		case GPIO_DDC_LINE_I2C_PAD:
+		default:
+			ASSERT_CRITICAL(false);
+			result = false;
+		}
+	break;
+	case GPIO_ID_GENERIC:
+		info->offset = REG(DC_GPIO_GENERIC_A);
+		switch (en) {
+		case GPIO_GENERIC_A:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICA_A_MASK;
+		break;
+		case GPIO_GENERIC_B:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICB_A_MASK;
+		break;
+		case GPIO_GENERIC_C:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICC_A_MASK;
+		break;
+		case GPIO_GENERIC_D:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICD_A_MASK;
+		break;
+		case GPIO_GENERIC_E:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICE_A_MASK;
+		break;
+		case GPIO_GENERIC_F:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICF_A_MASK;
+		break;
+		case GPIO_GENERIC_G:
+			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICG_A_MASK;
+		break;
+		default:
+			ASSERT_CRITICAL(false);
+			result = false;
+		}
+	break;
+	case GPIO_ID_HPD:
+		info->offset = REG(DC_GPIO_HPD_A);
+		switch (en) {
+		case GPIO_HPD_1:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD1_A_MASK;
+		break;
+		case GPIO_HPD_2:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD2_A_MASK;
+		break;
+		case GPIO_HPD_3:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD3_A_MASK;
+		break;
+		case GPIO_HPD_4:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD4_A_MASK;
+		break;
+		case GPIO_HPD_5:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD5_A_MASK;
+		break;
+		case GPIO_HPD_6:
+			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD6_A_MASK;
+		break;
+		default:
+			ASSERT_CRITICAL(false);
+			result = false;
+		}
+	break;
+	case GPIO_ID_GSL:
+		switch (en) {
+		case GPIO_GSL_GENLOCK_CLOCK:
+				/*not implmented*/
+			ASSERT_CRITICAL(false);
+			result = false;
+		break;
+		case GPIO_GSL_GENLOCK_VSYNC:
+			/*not implmented*/
+			ASSERT_CRITICAL(false);
+			result = false;
+		break;
+		case GPIO_GSL_SWAPLOCK_A:
+			/*not implmented*/
+			ASSERT_CRITICAL(false);
+			result = false;
+		break;
+		case GPIO_GSL_SWAPLOCK_B:
+			/*not implmented*/
+			ASSERT_CRITICAL(false);
+			result = false;
+
+		break;
+		default:
+			ASSERT_CRITICAL(false);
+			result = false;
+		}
+	break;
+	case GPIO_ID_SYNC:
+	case GPIO_ID_VIP_PAD:
+	default:
+		ASSERT_CRITICAL(false);
+		result = false;
+	}
+
+	if (result) {
+		info->offset_y = info->offset + 2;
+		info->offset_en = info->offset + 1;
+		info->offset_mask = info->offset - 1;
+
+		info->mask_y = info->mask;
+		info->mask_en = info->mask;
+		info->mask_mask = info->mask;
+	}
+
+	return result;
+}
+
+/* function table */
+static const struct hw_translate_funcs funcs = {
+	.offset_to_id = offset_to_id,
+	.id_to_offset = id_to_offset,
+};
+
+/*
+ * dal_hw_translate_dcn10_init
+ *
+ * @brief
+ * Initialize Hw translate function pointers.
+ *
+ * @param
+ * struct hw_translate *tr - [out] struct of function pointers
+ *
+ */
+void dal_hw_translate_dcn20_init(struct hw_translate *tr)
+{
+	tr->funcs = &funcs;
+}
+
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.h b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.h
new file mode 100644
index 000000000000..01f52c7bed86
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/gpio/dcn20/hw_translate_dcn20.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 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
+ *
+ */
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#ifndef __DAL_HW_TRANSLATE_DCN20_H__
+#define __DAL_HW_TRANSLATE_DCN20_H__
+
+struct hw_translate;
+
+/* Initialize Hw translate function pointers */
+void dal_hw_translate_dcn20_init(struct hw_translate *tr);
+
+#endif /* __DAL_HW_TRANSLATE_DCN20_H__ */
+#endif
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h b/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
index bf40725f982f..f91e85b04956 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
+++ b/drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h
@@ -48,6 +48,14 @@
 	DDC_GPIO_REG_LIST(cd,id),\
 	.ddc_setup = REG(DC_I2C_DDC ## id ## _SETUP)
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	#define DDC_REG_LIST_DCN2(cd, id) \
+	DDC_GPIO_REG_LIST(cd, id),\
+	.ddc_setup = REG(DC_I2C_DDC ## id ## _SETUP),\
+	.phy_aux_cntl = REG(PHY_AUX_CNTL), \
+	.dc_gpio_aux_ctrl_5 = REG(DC_GPIO_AUX_CTRL_5)
+#endif
+
 #define DDC_GPIO_VGA_REG_LIST_ENTRY(type,cd)\
 	.type ## _reg =   REG(DC_GPIO_DDCVGA_ ## type),\
 	.type ## _mask =  DC_GPIO_DDCVGA_ ## type ## __DC_GPIO_DDCVGA ## cd ## _ ## type ## _MASK,\
@@ -82,6 +90,13 @@
 	DDC_GPIO_I2C_REG_LIST(cd),\
 	.ddc_setup = 0
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#define DDC_I2C_REG_LIST_DCN2(cd) \
+	DDC_GPIO_I2C_REG_LIST(cd),\
+	.ddc_setup = 0,\
+	.phy_aux_cntl = REG(PHY_AUX_CNTL), \
+	.dc_gpio_aux_ctrl_5 = REG(DC_GPIO_AUX_CTRL_5)
+#endif
 #define DDC_MASK_SH_LIST_COMMON(mask_sh) \
 		SF_DDC(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE, mask_sh),\
 		SF_DDC(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_EDID_DETECT_ENABLE, mask_sh),\
@@ -95,10 +110,22 @@
 		SF_DDC(DC_GPIO_I2CPAD_MASK, DC_GPIO_SDA_PD_DIS, mask_sh),\
 		SF_DDC(DC_GPIO_I2CPAD_MASK, DC_GPIO_SCL_PD_DIS, mask_sh)
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#define DDC_MASK_SH_LIST_DCN2(mask_sh, cd) \
+	{DDC_MASK_SH_LIST_COMMON(mask_sh),\
+	0,\
+	0,\
+	(PHY_AUX_CNTL__AUX## cd ##_PAD_RXSEL## mask_sh),\
+	(DC_GPIO_AUX_CTRL_5__DDC_PAD## cd ##_I2CMODE## mask_sh)}
+#endif
 
 struct ddc_registers {
 	struct gpio_registers gpio;
 	uint32_t ddc_setup;
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	uint32_t phy_aux_cntl;
+	uint32_t dc_gpio_aux_ctrl_5;
+#endif
 };
 
 struct ddc_sh_mask {
@@ -113,6 +140,11 @@ struct ddc_sh_mask {
 	/* i2cpad_mask */
 	uint32_t DC_GPIO_SDA_PD_DIS;
 	uint32_t DC_GPIO_SCL_PD_DIS;
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	//phy_aux_cntl
+	uint32_t AUX_PAD_RXSEL;
+	uint32_t DDC_PAD_I2CMODE;
+#endif
 };
 
 
@@ -148,6 +180,27 @@ struct ddc_sh_mask {
 {\
 	DDC_I2C_REG_LIST(SCL)\
 }
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#define ddc_data_regs_dcn2(id) \
+{\
+	DDC_REG_LIST_DCN2(DATA, id)\
+}
+
+#define ddc_clk_regs_dcn2(id) \
+{\
+	DDC_REG_LIST_DCN2(CLK, id)\
+}
+
+#define ddc_i2c_data_regs_dcn2 \
+{\
+	DDC_I2C_REG_LIST_DCN2(SDA)\
+}
+
+#define ddc_i2c_clk_regs_dcn2 \
+{\
+	DDC_REG_LIST_DCN2(SCL)\
+}
+#endif
 
 
 #endif /* DRIVERS_GPU_DRM_AMD_DC_DEV_DC_GPIO_DDC_REGS_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
index 310f48965b27..49a99248e7f6 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.c
@@ -144,6 +144,15 @@ static enum gpio_result set_config(
 					AUX_PAD1_MODE, 0);
 		}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+		if (ddc->regs->dc_gpio_aux_ctrl_5 != 0) {
+				REG_UPDATE(dc_gpio_aux_ctrl_5, DDC_PAD_I2CMODE, 1);
+		}
+		//set  DC_IO_aux_rxsel = 2'b01
+		if (ddc->regs->phy_aux_cntl != 0) {
+				REG_UPDATE(phy_aux_cntl, AUX_PAD_RXSEL, 1);
+		}
+#endif
 		return GPIO_RESULT_OK;
 	case GPIO_DDC_CONFIG_TYPE_MODE_AUX:
 		/* set the AUX pad mode */
@@ -151,6 +160,12 @@ static enum gpio_result set_config(
 			REG_SET(gpio.MASK_reg, regval,
 					AUX_PAD1_MODE, 1);
 		}
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+		if (ddc->regs->dc_gpio_aux_ctrl_5 != 0) {
+			REG_UPDATE(dc_gpio_aux_ctrl_5,
+					DDC_PAD_I2CMODE, 0);
+		}
+#endif
 
 		return GPIO_RESULT_OK;
 	case GPIO_DDC_CONFIG_TYPE_POLL_FOR_CONNECT:
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.c
index a610fae16280..f90205bfbe76 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_factory.c
@@ -46,6 +46,9 @@
 #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
 #include "dcn10/hw_factory_dcn10.h"
 #endif
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#include "dcn20/hw_factory_dcn20.h"
+#endif
 
 #include "diagnostics/hw_factory_diag.h"
 
@@ -89,6 +92,12 @@ bool dal_hw_factory_init(
 		return true;
 #endif
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	case DCN_VERSION_2_0:
+		dal_hw_factory_dcn20_init(factory);
+		return true;
+#endif
+
 	default:
 		ASSERT_CRITICAL(false);
 		return false;
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_translate.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_translate.c
index 1f9833dc8cfe..c35fe201d335 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/hw_translate.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_translate.c
@@ -46,6 +46,9 @@
 #if defined(CONFIG_DRM_AMD_DC_DCN1_0)
 #include "dcn10/hw_translate_dcn10.h"
 #endif
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#include "dcn20/hw_translate_dcn20.h"
+#endif
 
 #include "diagnostics/hw_translate_diag.h"
 
@@ -86,6 +89,12 @@ bool dal_hw_translate_init(
 		return true;
 #endif
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	case DCN_VERSION_2_0:
+		dal_hw_translate_dcn20_init(translate);
+		return true;
+#endif
+
 	default:
 		BREAK_TO_DEBUGGER();
 		return false;