drm/amd/display: split dccg clock manager into asic folders

Currently dccg contains code related to every dcn revision in
a single file.

This change splits out the dcn parts of code into correct folders
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -28,7 +28,7 @@
 
 DCE = dce_audio.o dce_stream_encoder.o dce_link_encoder.o dce_hwseq.o \
 dce_mem_input.o dce_clock_source.o dce_scl_filters.o dce_transform.o \
-dce_clocks.o dce_opp.o dce_dmcu.o dce_abm.o dce_ipp.o dce_aux.o \
+dce_dccg.o dce_opp.o dce_dmcu.o dce_abm.o dce_ipp.o dce_aux.o \
 dce_i2c.o dce_i2c_hw.o dce_i2c_sw.o
 
 AMD_DAL_DCE = $(addprefix $(AMDDALPATH)/dc/dce/,$(DCE))

drivers/gpu/drm/amd/display/dc/dce/dce_clocks.h → drivers/gpu/drm/amd/display/dc/dce/dce_dccg.h

@@ -24,10 +24,10 @@
  */
 
 
-#ifndef _DCE_CLOCKS_H_
-#define _DCE_CLOCKS_H_
+#ifndef _DCE_DCCG_H_
+#define _DCE_DCCG_H_
 
-#include "display_clock.h"
+#include "dccg.h"
 
 #define MEMORY_TYPE_MULTIPLIER_CZ 4
 
@@ -103,6 +103,42 @@ struct dce_dccg {
 	enum dm_pp_clocks_state cur_min_clks_state;
 };
 
+/* Starting DID for each range */
+enum dentist_base_divider_id {
+	DENTIST_BASE_DID_1 = 0x08,
+	DENTIST_BASE_DID_2 = 0x40,
+	DENTIST_BASE_DID_3 = 0x60,
+	DENTIST_BASE_DID_4 = 0x7e,
+	DENTIST_MAX_DID = 0x7f
+};
+
+/* Starting point and step size for each divider range.*/
+enum dentist_divider_range {
+	DENTIST_DIVIDER_RANGE_1_START = 8,   /* 2.00  */
+	DENTIST_DIVIDER_RANGE_1_STEP  = 1,   /* 0.25  */
+	DENTIST_DIVIDER_RANGE_2_START = 64,  /* 16.00 */
+	DENTIST_DIVIDER_RANGE_2_STEP  = 2,   /* 0.50  */
+	DENTIST_DIVIDER_RANGE_3_START = 128, /* 32.00 */
+	DENTIST_DIVIDER_RANGE_3_STEP  = 4,   /* 1.00  */
+	DENTIST_DIVIDER_RANGE_4_START = 248, /* 62.00 */
+	DENTIST_DIVIDER_RANGE_4_STEP  = 264, /* 66.00 */
+	DENTIST_DIVIDER_RANGE_SCALE_FACTOR = 4
+};
+
+static inline bool should_set_clock(bool safe_to_lower, int calc_clk, int cur_clk)
+{
+	return ((safe_to_lower && calc_clk < cur_clk) || calc_clk > cur_clk);
+}
+
+void dce_clock_read_ss_info(struct dce_dccg *dccg_dce);
+
+int dce12_get_dp_ref_freq_khz(struct dccg *dccg);
+
+void dce110_fill_display_configs(
+	const struct dc_state *context,
+	struct dm_pp_display_configuration *pp_display_cfg);
+
+int dce112_set_clock(struct dccg *dccg, int requested_clk_khz);
 
 struct dccg *dce_dccg_create(
 	struct dc_context *ctx,
@@ -124,10 +160,6 @@ struct dccg *dce112_dccg_create(
 
 struct dccg *dce120_dccg_create(struct dc_context *ctx);
 
-#ifdef CONFIG_DRM_AMD_DC_DCN1_0
-struct dccg *dcn1_dccg_create(struct dc_context *ctx);
-#endif
-
 void dce_dccg_destroy(struct dccg **dccg);
 
-#endif /* _DCE_CLOCKS_H_ */
+#endif /* _DCE_DCCG_H_ */

drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c

@@ -22,7 +22,7 @@
  * Authors: AMD
  *
  */
-#include "../dce/dce_clocks.h"
+#include "../dce/dce_dccg.h"
 #include "dm_services.h"
 
 #include "link_encoder.h"

drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c

@@ -31,7 +31,7 @@
 #include "resource.h"
 #include "dce110/dce110_resource.h"
 
-#include "../dce/dce_clocks.h"
+#include "../dce/dce_dccg.h"
 #include "include/irq_service_interface.h"
 #include "dce/dce_audio.h"
 #include "dce110/dce110_timing_generator.h"

drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c

@@ -23,7 +23,7 @@
  *
  */
 
-#include "../dce/dce_clocks.h"
+#include "../dce/dce_dccg.h"
 #include "dm_services.h"
 
 #include "link_encoder.h"

drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c

@@ -32,7 +32,7 @@
 #include "include/irq_service_interface.h"
 #include "dce120_resource.h"
 
-#include "../dce/dce_clocks.h"
+#include "../dce/dce_dccg.h"
 #include "dce112/dce112_resource.h"
 
 #include "dce110/dce110_resource.h"

drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c

@@ -23,7 +23,7 @@
  *
  */
 
-#include "../dce/dce_clocks.h"
+#include "../dce/dce_dccg.h"
 #include "dce/dce_8_0_d.h"
 #include "dce/dce_8_0_sh_mask.h"
 

drivers/gpu/drm/amd/display/dc/dcn10/Makefile

@@ -24,7 +24,7 @@
 
 DCN10 = dcn10_resource.o dcn10_ipp.o dcn10_hw_sequencer.o dcn10_hw_sequencer_debug.o \
 		dcn10_dpp.o dcn10_opp.o dcn10_optc.o \
-		dcn10_hubp.o dcn10_mpc.o \
+		dcn10_hubp.o dcn10_mpc.o dcn10_dccg.o \
 		dcn10_dpp_dscl.o dcn10_dpp_cm.o dcn10_cm_common.o \
 		dcn10_hubbub.o dcn10_stream_encoder.o dcn10_link_encoder.o
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dccg.c

+/*
+ * 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
+ *
+ */
+
+#include "dcn10_dccg.h"
+
+#include "reg_helper.h"
+#include "core_types.h"
+
+#define TO_DCE_DCCG(clocks)\
+	container_of(clocks, struct dce_dccg, base)
+
+#define REG(reg) \
+	(dccg_dce->regs->reg)
+
+#undef FN
+#define FN(reg_name, field_name) \
+	dccg_dce->dccg_shift->field_name, dccg_dce->dccg_mask->field_name
+
+#define CTX \
+	dccg_dce->base.ctx
+#define DC_LOGGER \
+	dccg->ctx->logger
+
+void dcn1_pplib_apply_display_requirements(
+	struct dc *dc,
+	struct dc_state *context)
+{
+	struct dm_pp_display_configuration *pp_display_cfg = &context->pp_display_cfg;
+
+	pp_display_cfg->min_engine_clock_khz = dc->res_pool->dccg->clks.dcfclk_khz;
+	pp_display_cfg->min_memory_clock_khz = dc->res_pool->dccg->clks.fclk_khz;
+	pp_display_cfg->min_engine_clock_deep_sleep_khz = dc->res_pool->dccg->clks.dcfclk_deep_sleep_khz;
+	pp_display_cfg->min_dcfc_deep_sleep_clock_khz = dc->res_pool->dccg->clks.dcfclk_deep_sleep_khz;
+	pp_display_cfg->min_dcfclock_khz = dc->res_pool->dccg->clks.dcfclk_khz;
+	pp_display_cfg->disp_clk_khz = dc->res_pool->dccg->clks.dispclk_khz;
+	dce110_fill_display_configs(context, pp_display_cfg);
+
+	if (memcmp(&dc->current_state->pp_display_cfg, pp_display_cfg, sizeof(*pp_display_cfg)) !=  0)
+		dm_pp_apply_display_requirements(dc->ctx, pp_display_cfg);
+}
+
+static int dcn1_determine_dppclk_threshold(struct dccg *dccg, struct dc_clocks *new_clocks)
+{
+	bool request_dpp_div = new_clocks->dispclk_khz > new_clocks->dppclk_khz;
+	bool dispclk_increase = new_clocks->dispclk_khz > dccg->clks.dispclk_khz;
+	int disp_clk_threshold = new_clocks->max_supported_dppclk_khz;
+	bool cur_dpp_div = dccg->clks.dispclk_khz > dccg->clks.dppclk_khz;
+
+	/* increase clock, looking for div is 0 for current, request div is 1*/
+	if (dispclk_increase) {
+		/* already divided by 2, no need to reach target clk with 2 steps*/
+		if (cur_dpp_div)
+			return new_clocks->dispclk_khz;
+
+		/* request disp clk is lower than maximum supported dpp clk,
+		 * no need to reach target clk with two steps.
+		 */
+		if (new_clocks->dispclk_khz <= disp_clk_threshold)
+			return new_clocks->dispclk_khz;
+
+		/* target dpp clk not request divided by 2, still within threshold */
+		if (!request_dpp_div)
+			return new_clocks->dispclk_khz;
+
+	} else {
+		/* decrease clock, looking for current dppclk divided by 2,
+		 * request dppclk not divided by 2.
+		 */
+
+		/* current dpp clk not divided by 2, no need to ramp*/
+		if (!cur_dpp_div)
+			return new_clocks->dispclk_khz;
+
+		/* current disp clk is lower than current maximum dpp clk,
+		 * no need to ramp
+		 */
+		if (dccg->clks.dispclk_khz <= disp_clk_threshold)
+			return new_clocks->dispclk_khz;
+
+		/* request dpp clk need to be divided by 2 */
+		if (request_dpp_div)
+			return new_clocks->dispclk_khz;
+	}
+
+	return disp_clk_threshold;
+}
+
+static void dcn1_ramp_up_dispclk_with_dpp(struct dccg *dccg, struct dc_clocks *new_clocks)
+{
+	struct dc *dc = dccg->ctx->dc;
+	int dispclk_to_dpp_threshold = dcn1_determine_dppclk_threshold(dccg, new_clocks);
+	bool request_dpp_div = new_clocks->dispclk_khz > new_clocks->dppclk_khz;
+	int i;
+
+	/* set disp clk to dpp clk threshold */
+	dce112_set_clock(dccg, dispclk_to_dpp_threshold);
+
+	/* update request dpp clk division option */
+	for (i = 0; i < dc->res_pool->pipe_count; i++) {
+		struct pipe_ctx *pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
+
+		if (!pipe_ctx->plane_state)
+			continue;
+
+		pipe_ctx->plane_res.dpp->funcs->dpp_dppclk_control(
+				pipe_ctx->plane_res.dpp,
+				request_dpp_div,
+				true);
+	}
+
+	/* If target clk not same as dppclk threshold, set to target clock */
+	if (dispclk_to_dpp_threshold != new_clocks->dispclk_khz)
+		dce112_set_clock(dccg, new_clocks->dispclk_khz);
+
+	dccg->clks.dispclk_khz = new_clocks->dispclk_khz;
+	dccg->clks.dppclk_khz = new_clocks->dppclk_khz;
+	dccg->clks.max_supported_dppclk_khz = new_clocks->max_supported_dppclk_khz;
+}
+
+static void dcn1_update_clocks(struct dccg *dccg,
+			struct dc_state *context,
+			bool safe_to_lower)
+{
+	struct dc *dc = dccg->ctx->dc;
+	struct dc_clocks *new_clocks = &context->bw.dcn.clk;
+	struct pp_smu_display_requirement_rv *smu_req_cur =
+			&dc->res_pool->pp_smu_req;
+	struct pp_smu_display_requirement_rv smu_req = *smu_req_cur;
+	struct pp_smu_funcs_rv *pp_smu = dc->res_pool->pp_smu;
+	struct dm_pp_clock_for_voltage_req clock_voltage_req = {0};
+	bool send_request_to_increase = false;
+	bool send_request_to_lower = false;
+
+	if (new_clocks->phyclk_khz)
+		smu_req.display_count = 1;
+	else
+		smu_req.display_count = 0;
+
+	if (new_clocks->dispclk_khz > dccg->clks.dispclk_khz
+			|| new_clocks->phyclk_khz > dccg->clks.phyclk_khz
+			|| new_clocks->fclk_khz > dccg->clks.fclk_khz
+			|| new_clocks->dcfclk_khz > dccg->clks.dcfclk_khz)
+		send_request_to_increase = true;
+
+	if (should_set_clock(safe_to_lower, new_clocks->phyclk_khz, dccg->clks.phyclk_khz)) {
+		dccg->clks.phyclk_khz = new_clocks->phyclk_khz;
+
+		send_request_to_lower = true;
+	}
+
+	if (should_set_clock(safe_to_lower, new_clocks->fclk_khz, dccg->clks.fclk_khz)) {
+		dccg->clks.fclk_khz = new_clocks->fclk_khz;
+		clock_voltage_req.clk_type = DM_PP_CLOCK_TYPE_FCLK;
+		clock_voltage_req.clocks_in_khz = new_clocks->fclk_khz;
+		smu_req.hard_min_fclk_khz = new_clocks->fclk_khz;
+
+		dm_pp_apply_clock_for_voltage_request(dccg->ctx, &clock_voltage_req);
+		send_request_to_lower = true;
+	}
+
+	if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, dccg->clks.dcfclk_khz)) {
+		dccg->clks.dcfclk_khz = new_clocks->dcfclk_khz;
+		smu_req.hard_min_dcefclk_khz = new_clocks->dcfclk_khz;
+
+		send_request_to_lower = true;
+	}
+
+	if (should_set_clock(safe_to_lower,
+			new_clocks->dcfclk_deep_sleep_khz, dccg->clks.dcfclk_deep_sleep_khz)) {
+		dccg->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
+		smu_req.min_deep_sleep_dcefclk_mhz = new_clocks->dcfclk_deep_sleep_khz;
+
+		send_request_to_lower = true;
+	}
+
+	/* make sure dcf clk is before dpp clk to
+	 * make sure we have enough voltage to run dpp clk
+	 */
+	if (send_request_to_increase) {
+		/*use dcfclk to request voltage*/
+		clock_voltage_req.clk_type = DM_PP_CLOCK_TYPE_DCFCLK;
+		clock_voltage_req.clocks_in_khz = dcn_find_dcfclk_suits_all(dc, new_clocks);
+		dm_pp_apply_clock_for_voltage_request(dccg->ctx, &clock_voltage_req);
+		if (pp_smu->set_display_requirement)
+			pp_smu->set_display_requirement(&pp_smu->pp_smu, &smu_req);
+		dcn1_pplib_apply_display_requirements(dc, context);
+	}
+
+	/* dcn1 dppclk is tied to dispclk */
+	/* program dispclk on = as a w/a for sleep resume clock ramping issues */
+	if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, dccg->clks.dispclk_khz)
+			|| new_clocks->dispclk_khz == dccg->clks.dispclk_khz) {
+		dcn1_ramp_up_dispclk_with_dpp(dccg, new_clocks);
+		dccg->clks.dispclk_khz = new_clocks->dispclk_khz;
+
+		send_request_to_lower = true;
+	}
+
+	if (!send_request_to_increase && send_request_to_lower) {
+		/*use dcfclk to request voltage*/
+		clock_voltage_req.clk_type = DM_PP_CLOCK_TYPE_DCFCLK;
+		clock_voltage_req.clocks_in_khz = dcn_find_dcfclk_suits_all(dc, new_clocks);
+		dm_pp_apply_clock_for_voltage_request(dccg->ctx, &clock_voltage_req);
+		if (pp_smu->set_display_requirement)
+			pp_smu->set_display_requirement(&pp_smu->pp_smu, &smu_req);
+		dcn1_pplib_apply_display_requirements(dc, context);
+	}
+
+
+	*smu_req_cur = smu_req;
+}
+
+static const struct dccg_funcs dcn1_funcs = {
+	.get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
+	.update_clocks = dcn1_update_clocks
+};
+
+struct dccg *dcn1_dccg_create(struct dc_context *ctx)
+{
+	struct dc_debug_options *debug = &ctx->dc->debug;
+	struct dc_bios *bp = ctx->dc_bios;
+	struct dc_firmware_info fw_info = { { 0 } };
+	struct dce_dccg *dccg_dce = kzalloc(sizeof(*dccg_dce), GFP_KERNEL);
+
+	if (dccg_dce == NULL) {
+		BREAK_TO_DEBUGGER();
+		return NULL;
+	}
+
+	dccg_dce->base.ctx = ctx;
+	dccg_dce->base.funcs = &dcn1_funcs;
+
+	dccg_dce->dfs_bypass_disp_clk = 0;
+
+	dccg_dce->dprefclk_ss_percentage = 0;
+	dccg_dce->dprefclk_ss_divider = 1000;
+	dccg_dce->ss_on_dprefclk = false;
+
+	dccg_dce->dprefclk_khz = 600000;
+	if (bp->integrated_info)
+		dccg_dce->dentist_vco_freq_khz = bp->integrated_info->dentist_vco_freq;
+	if (dccg_dce->dentist_vco_freq_khz == 0) {
+		bp->funcs->get_firmware_info(bp, &fw_info);
+		dccg_dce->dentist_vco_freq_khz = fw_info.smu_gpu_pll_output_freq;
+		if (dccg_dce->dentist_vco_freq_khz == 0)
+			dccg_dce->dentist_vco_freq_khz = 3600000;
+	}
+
+	if (!debug->disable_dfs_bypass && bp->integrated_info)
+		if (bp->integrated_info->gpu_cap_info & DFS_BYPASS_ENABLE)
+			dccg_dce->dfs_bypass_enabled = true;
+
+	dce_clock_read_ss_info(dccg_dce);
+
+	return &dccg_dce->base;
+}

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dccg.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 __DCN10_DCCG_H__
+#define __DCN10_DCCG_H__
+
+#include "../dce/dce_dccg.h"
+
+void dcn1_pplib_apply_display_requirements(
+	struct dc *dc,
+	struct dc_state *context);
+
+struct dccg *dcn1_dccg_create(struct dc_context *ctx);
+
+#endif //__DCN10_DCCG_H__

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

@@ -40,7 +40,7 @@
 #include "dcn10/dcn10_opp.h"
 #include "dcn10/dcn10_link_encoder.h"
 #include "dcn10/dcn10_stream_encoder.h"
-#include "../dce/dce_clocks.h"
+#include "dcn10/dcn10_dccg.h"
 #include "dce/dce_clock_source.h"
 #include "dce/dce_audio.h"
 #include "dce/dce_hwseq.h"

drivers/gpu/drm/amd/display/dc/inc/core_types.h

@@ -82,7 +82,7 @@ void core_link_disable_stream(struct pipe_ctx *pipe_ctx, int option);
 
 void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable);
 /********** DAL Core*********************/
-#include "display_clock.h"
+#include "hw/dccg.h"
 #include "transform.h"
 #include "dpp.h"
 

drivers/gpu/drm/amd/display/dc/inc/dcn_calcs.h

@@ -31,8 +31,8 @@
 #define __DCN_CALCS_H__
 
 #include "bw_fixed.h"
-#include "display_clock.h"
 #include "../dml/display_mode_lib.h"
+#include "hw/dccg.h"
 
 struct dc;
 struct dc_state;

drivers/gpu/drm/amd/display/dc/inc/hw/display_clock.h → drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h

@@ -23,8 +23,8 @@
  *
  */
 
-#ifndef __DISPLAY_CLOCK_H__
-#define __DISPLAY_CLOCK_H__
+#ifndef __DAL_DCCG_H__
+#define __DAL_DCCG_H__
 
 #include "dm_services_types.h"
 #include "dc.h"
@@ -44,4 +44,4 @@ struct dccg_funcs {
 	int (*get_dp_ref_clk_frequency)(struct dccg *dccg);
 };
 
-#endif /* __DISPLAY_CLOCK_H__ */
+#endif /* __DAL_DCCG_H__ */