drm/amd/display: Add Renoir clock manager

Controls display clocks and interfaces with powerplay for
clock and power requirements.
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile

@@ -85,3 +85,13 @@ AMD_DAL_CLK_MGR_DCN20 = $(addprefix $(AMDDALPATH)/dc/clk_mgr/dcn20/,$(CLK_MGR_DC
 AMD_DISPLAY_FILES += $(AMD_DAL_CLK_MGR_DCN20)
 endif
 
+ifdef CONFIG_DRM_AMD_DC_DCN2_1
+###############################################################################
+# DCN21
+###############################################################################
+CLK_MGR_DCN21 = rn_clk_mgr.o rn_clk_mgr_vbios_smu.o
+
+AMD_DAL_CLK_MGR_DCN21 = $(addprefix $(AMDDALPATH)/dc/clk_mgr/dcn21/,$(CLK_MGR_DCN21))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_CLK_MGR_DCN21)
+endif

drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c

@@ -37,6 +37,9 @@
 #include "dcn10/rv1_clk_mgr.h"
 #include "dcn10/rv2_clk_mgr.h"
 #include "dcn20/dcn20_clk_mgr.h"
+#if defined(CONFIG_DRM_AMD_DC_DCN2_1)
+#include "dcn21/rn_clk_mgr.h"
+#endif
 
 
 int clk_mgr_helper_get_active_display_cnt(
@@ -117,6 +120,12 @@ struct clk_mgr *dc_clk_mgr_create(struct dc_context *ctx, struct pp_smu_funcs *p
 			rv1_clk_mgr_construct(ctx, clk_mgr, pp_smu);
 			break;
 		}
+#if defined(CONFIG_DRM_AMD_DC_DCN2_1)
+		if (ASICREV_IS_RENOIR(asic_id.hw_internal_rev)) {
+			rn_clk_mgr_construct(ctx, clk_mgr, pp_smu, dccg);
+			break;
+		}
+#endif	/* DCN2_1 */
 		break;
 #endif	/* Family RV */
 

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h

+/*
+ * 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
+ *
+ */
+
+#ifndef __RN_CLK_MGR_H__
+#define __RN_CLK_MGR_H__
+
+struct rn_clk_registers {
+	uint32_t CLK1_CLK0_CURRENT_CNT; /* DPREFCLK */
+};
+
+
+void rn_clk_mgr_construct(struct dc_context *ctx,
+		struct clk_mgr_internal *clk_mgr,
+		struct pp_smu_funcs *pp_smu,
+		struct dccg *dccg);
+
+#endif //__RN_CLK_MGR_H__

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c

+/*
+ * Copyright 2012-16 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 "core_types.h"
+#include "clk_mgr_internal.h"
+#include "reg_helper.h"
+
+#include "renoir_ip_offset.h"
+
+#include "mp/mp_12_0_0_offset.h"
+#include "mp/mp_12_0_0_sh_mask.h"
+
+#define REG(reg_name) \
+	(MP1_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name)
+
+#define FN(reg_name, field) \
+	FD(reg_name##__##field)
+
+#define VBIOSSMC_MSG_TestMessage                  0x1
+#define VBIOSSMC_MSG_GetSmuVersion                0x2
+#define VBIOSSMC_MSG_PowerUpGfx                   0x3
+#define VBIOSSMC_MSG_SetDispclkFreq               0x4
+#define VBIOSSMC_MSG_SetDprefclkFreq              0x5
+#define VBIOSSMC_MSG_PowerDownGfx                 0x6
+#define VBIOSSMC_MSG_SetDppclkFreq                0x7
+#define VBIOSSMC_MSG_SetHardMinDcfclkByFreq       0x8
+#define VBIOSSMC_MSG_SetMinDeepSleepDcfclk        0x9
+#define VBIOSSMC_MSG_SetPhyclkVoltageByFreq       0xA
+#define VBIOSSMC_MSG_GetFclkFrequency             0xB
+#define VBIOSSMC_MSG_SetDisplayCount              0xC
+#define VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown 0xD
+#define VBIOSSMC_MSG_UpdatePmeRestore			  0xE
+
+int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, unsigned int msg_id, unsigned int param)
+{
+	/* First clear response register */
+	REG_WRITE(MP1_SMN_C2PMSG_91, 0);
+
+	/* Set the parameter register for the SMU message, unit is Mhz */
+	REG_WRITE(MP1_SMN_C2PMSG_83, param);
+
+	/* Trigger the message transaction by writing the message ID */
+	REG_WRITE(MP1_SMN_C2PMSG_67, msg_id);
+
+	REG_WAIT(MP1_SMN_C2PMSG_91, CONTENT, 1, 10, 200000);
+
+	/* Actual dispclk set is returned in the parameter register */
+	return REG_READ(MP1_SMN_C2PMSG_83);
+}
+
+int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr)
+{
+	return rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_GetSmuVersion,
+			0);
+}
+
+
+int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz)
+{
+	int actual_dispclk_set_mhz = -1;
+	struct dc *core_dc = clk_mgr->base.ctx->dc;
+	struct dmcu *dmcu = core_dc->res_pool->dmcu;
+	uint32_t clk = requested_dispclk_khz / 1000;
+
+	if (clk <= 100)
+		clk = 101;
+
+	/*  Unit of SMU msg parameter is Mhz */
+	actual_dispclk_set_mhz = rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetDispclkFreq,
+			clk);
+
+	if (!IS_FPGA_MAXIMUS_DC(core_dc->ctx->dce_environment)) {
+		if (dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) {
+			if (clk_mgr->dfs_bypass_disp_clk != actual_dispclk_set_mhz)
+				dmcu->funcs->set_psr_wait_loop(dmcu,
+						actual_dispclk_set_mhz / 7);
+		}
+	}
+
+	return actual_dispclk_set_mhz * 1000;
+}
+
+int rn_vbios_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr)
+{
+	int actual_dprefclk_set_mhz = -1;
+
+	actual_dprefclk_set_mhz = rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetDprefclkFreq,
+			clk_mgr->base.dprefclk_khz / 1000);
+
+	/* TODO: add code for programing DP DTO, currently this is down by command table */
+
+	return actual_dprefclk_set_mhz * 1000;
+}
+
+int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz)
+{
+	int actual_dcfclk_set_mhz = -1;
+
+	if (clk_mgr->smu_ver < 0xFFFFFFFF)
+		return actual_dcfclk_set_mhz;
+
+	actual_dcfclk_set_mhz = rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
+			requested_dcfclk_khz / 1000);
+
+	return actual_dcfclk_set_mhz * 1000;
+}
+
+int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz)
+{
+	int actual_min_ds_dcfclk_mhz = -1;
+
+	if (clk_mgr->smu_ver < 0xFFFFFFFF)
+		return actual_min_ds_dcfclk_mhz;
+
+	actual_min_ds_dcfclk_mhz = rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetMinDeepSleepDcfclk,
+			requested_min_ds_dcfclk_khz / 1000);
+
+	return actual_min_ds_dcfclk_mhz * 1000;
+}
+
+void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz)
+{
+	rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetPhyclkVoltageByFreq,
+			requested_phyclk_khz / 1000);
+}
+
+int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz)
+{
+	int actual_dppclk_set_mhz = -1;
+
+	uint32_t clk = requested_dpp_khz / 1000;
+
+	if (clk <= 100)
+		clk = 101;
+
+	actual_dppclk_set_mhz = rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetDppclkFreq,
+			clk);
+
+	return actual_dppclk_set_mhz * 1000;
+}
+
+void rn_vbios_smu_set_display_count(struct clk_mgr_internal *clk_mgr, int display_count)
+{
+	rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_SetDisplayCount,
+			display_count);
+}
+
+void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr)
+{
+	rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown,
+			0);
+}
+
+void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr)
+{
+	rn_vbios_smu_send_msg_with_param(
+			clk_mgr,
+			VBIOSSMC_MSG_UpdatePmeRestore,
+			0);
+}

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.h

+/*
+ * 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
+ *
+ */
+
+#ifndef DAL_DC_RN_CLK_MGR_VBIOS_SMU_H_
+#define DAL_DC_RN_CLK_MGR_VBIOS_SMU_H_
+
+int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr);
+int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz);
+int rn_vbios_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr);
+int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz);
+int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz);
+void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz);
+int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz);
+void rn_vbios_smu_set_display_count(struct clk_mgr_internal *clk_mgr, int display_count);
+void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr);
+void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr);
+
+#endif /* DAL_DC_DCN10_RV1_CLK_MGR_VBIOS_SMU_H_ */

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

@@ -31,6 +31,128 @@
 #define DCN_MINIMUM_DISPCLK_Khz 100000
 #define DCN_MINIMUM_DPPCLK_Khz 100000
 
+#ifdef CONFIG_DRM_AMD_DC_DCN2_1
+/* Constants */
+#define DDR4_DRAM_WIDTH   64
+#define WM_A 0
+#define WM_B 1
+#define WM_C 2
+#define WM_D 3
+#define WM_SET_COUNT 4
+#endif
+
+#define DCN_MINIMUM_DISPCLK_Khz 100000
+#define DCN_MINIMUM_DPPCLK_Khz 100000
+
+#ifdef CONFIG_DRM_AMD_DC_DCN2_1
+/* Will these bw structures be ASIC specific? */
+
+#define MAX_NUM_DPM_LVL		4
+#define WM_SET_COUNT 		4
+
+
+struct clk_limit_table_entry {
+	unsigned int voltage; /* milivolts withh 2 fractional bits */
+	unsigned int dcfclk_mhz;
+	unsigned int fclk_mhz;
+	unsigned int memclk_mhz;
+	unsigned int socclk_mhz;
+};
+
+/* This table is contiguous */
+struct clk_limit_table {
+	struct clk_limit_table_entry entries[MAX_NUM_DPM_LVL];
+	unsigned int num_entries;
+};
+
+struct wm_range_table_entry {
+	unsigned int wm_inst;
+	unsigned int wm_type;
+	double pstate_latency_us;
+	bool valid;
+};
+
+
+struct clk_log_info {
+	bool enabled;
+	char *pBuf;
+	unsigned int bufSize;
+	unsigned int *sum_chars_printed;
+};
+
+struct clk_state_registers_and_bypass {
+	uint32_t dcfclk;
+	uint32_t dcf_deep_sleep_divider;
+	uint32_t dcf_deep_sleep_allow;
+	uint32_t dprefclk;
+	uint32_t dispclk;
+	uint32_t dppclk;
+
+	uint32_t dppclk_bypass;
+	uint32_t dcfclk_bypass;
+	uint32_t dprefclk_bypass;
+	uint32_t dispclk_bypass;
+};
+
+struct rv1_clk_internal {
+	uint32_t CLK0_CLK8_CURRENT_CNT;  //dcfclk
+	uint32_t CLK0_CLK8_DS_CNTL;		 //dcf_deep_sleep_divider
+	uint32_t CLK0_CLK8_ALLOW_DS;	 //dcf_deep_sleep_allow
+	uint32_t CLK0_CLK10_CURRENT_CNT; //dprefclk
+	uint32_t CLK0_CLK11_CURRENT_CNT; //dispclk
+
+	uint32_t CLK0_CLK8_BYPASS_CNTL;  //dcfclk bypass
+	uint32_t CLK0_CLK10_BYPASS_CNTL; //dprefclk bypass
+	uint32_t CLK0_CLK11_BYPASS_CNTL; //dispclk bypass
+};
+
+struct rn_clk_internal {
+	uint32_t CLK1_CLK0_CURRENT_CNT; //dispclk
+	uint32_t CLK1_CLK1_CURRENT_CNT; //dppclk
+	uint32_t CLK1_CLK2_CURRENT_CNT; //dprefclk
+	uint32_t CLK1_CLK3_CURRENT_CNT; //dcfclk
+	uint32_t CLK1_CLK3_DS_CNTL;		//dcf_deep_sleep_divider
+	uint32_t CLK1_CLK3_ALLOW_DS;	//dcf_deep_sleep_allow
+
+	uint32_t CLK1_CLK0_BYPASS_CNTL; //dispclk bypass
+	uint32_t CLK1_CLK1_BYPASS_CNTL; //dppclk bypass
+	uint32_t CLK1_CLK2_BYPASS_CNTL; //dprefclk bypass
+	uint32_t CLK1_CLK3_BYPASS_CNTL; //dcfclk bypass
+
+};
+
+/* For dtn logging and debugging */
+struct clk_state_registers {
+		uint32_t CLK0_CLK8_CURRENT_CNT;  //dcfclk
+		uint32_t CLK0_CLK8_DS_CNTL;		 //dcf_deep_sleep_divider
+		uint32_t CLK0_CLK8_ALLOW_DS;	 //dcf_deep_sleep_allow
+		uint32_t CLK0_CLK10_CURRENT_CNT; //dprefclk
+		uint32_t CLK0_CLK11_CURRENT_CNT; //dispclk
+};
+
+/* TODO: combine this with the above */
+struct clk_bypass {
+	uint32_t dcfclk_bypass;
+	uint32_t dispclk_pypass;
+	uint32_t dprefclk_bypass;
+};
+/*
+ * This table is not contiguous, can have holes, each
+ * entry correspond to one set of WM. For example if
+ * we have 2 DPM and LPDDR, we will WM set A, B and
+ * D occupied, C will be emptry.
+ */
+struct wm_table {
+	struct wm_range_table_entry entries[WM_SET_COUNT];
+};
+
+struct clk_bw_params {
+	unsigned int vram_type;
+	unsigned int num_channels;
+	struct clk_limit_table clk_table;
+	struct wm_table wm_table;
+};
+#endif
 /* Public interfaces */
 
 struct clk_states {
@@ -65,6 +187,9 @@ struct clk_mgr {
 	struct clk_mgr_funcs *funcs;
 	struct dc_clocks clks;
 	int dprefclk_khz; // Used by program pixel clock in clock source funcs, need to figureout where this goes
+#ifdef CONFIG_DRM_AMD_DC_DCN2_1
+	struct clk_bw_params *bw_params;
+#endif
 };
 
 /* forward declarations */