drm/amd/powerplay: print clock levels for smu11 (v2)

Add function to print current levels for smu11.

v2: expose get_current_clk_freq for smu v11. (Kevin)
Signed-off-by: NLikun Gao <Likun.Gao@amd.com>
Signed-off-by: NKevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

@@ -28,6 +28,7 @@
 #include "amdgpu_pm.h"
 #include "amdgpu_dpm.h"
 #include "amdgpu_display.h"
+#include "amdgpu_smu.h"
 #include "atom.h"
 #include <linux/power_supply.h>
 #include <linux/hwmon.h>
@@ -711,7 +712,9 @@ static ssize_t amdgpu_get_pp_dpm_sclk(struct device *dev,
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = ddev->dev_private;
 
-	if (adev->powerplay.pp_funcs->print_clock_levels)
+	if (adev->smu.ppt_funcs)
+		return smu_print_clk_levels(&adev->smu, PP_SCLK, buf);
+	else if (adev->powerplay.pp_funcs->print_clock_levels)
 		return amdgpu_dpm_print_clock_levels(adev, PP_SCLK, buf);
 	else
 		return snprintf(buf, PAGE_SIZE, "\n");
@@ -783,7 +786,9 @@ static ssize_t amdgpu_get_pp_dpm_mclk(struct device *dev,
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = ddev->dev_private;
 
-	if (adev->powerplay.pp_funcs->print_clock_levels)
+	if (adev->smu.ppt_funcs)
+		return smu_print_clk_levels(&adev->smu, PP_MCLK, buf);
+	else if (adev->powerplay.pp_funcs->print_clock_levels)
 		return amdgpu_dpm_print_clock_levels(adev, PP_MCLK, buf);
 	else
 		return snprintf(buf, PAGE_SIZE, "\n");

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -216,6 +216,7 @@ struct pptable_funcs {
 	int (*get_unallowed_feature_mask)(struct smu_context *smu, uint32_t *feature_mask, uint32_t num);
 	int (*set_default_dpm_table)(struct smu_context *smu);
 	int (*populate_umd_state_clk)(struct smu_context *smu);
+	int (*print_clk_levels)(struct smu_context *smu, enum pp_clock_type type, char *buf);
 };
 
 struct smu_funcs
@@ -330,6 +331,8 @@ struct smu_funcs
 	((smu)->funcs->get_power_limit? (smu)->funcs->get_power_limit((smu)) : 0)
 #define smu_get_current_clk_freq(smu, clk_id, value) \
 	((smu)->funcs->get_current_clk_freq? (smu)->funcs->get_current_clk_freq((smu), (clk_id), (value)) : 0)
+#define smu_print_clk_levels(smu, type, buf) \
+	((smu)->ppt_funcs->print_clk_levels ? (smu)->ppt_funcs->print_clk_levels((smu), (type), (buf)) : 0)
 
 #define smu_msg_get_index(smu, msg) \
 	((smu)->ppt_funcs? ((smu)->ppt_funcs->get_smu_msg_index? (smu)->ppt_funcs->get_smu_msg_index((smu), (msg)) : -EINVAL) : -EINVAL)

drivers/gpu/drm/amd/powerplay/vega20_ppt.c

@@ -552,6 +552,84 @@ static int vega20_populate_umd_state_clk(struct smu_context *smu)
 	return 0;
 }
 
+static int vega20_get_clk_table(struct smu_context *smu,
+			struct pp_clock_levels_with_latency *clocks,
+			struct vega20_single_dpm_table *dpm_table)
+{
+	int i, count;
+
+	count = (dpm_table->count > MAX_NUM_CLOCKS) ? MAX_NUM_CLOCKS : dpm_table->count;
+	clocks->num_levels = count;
+
+	for (i = 0; i < count; i++) {
+		clocks->data[i].clocks_in_khz =
+			dpm_table->dpm_levels[i].value * 1000;
+		clocks->data[i].latency_in_us = 0;
+	}
+
+	return 0;
+}
+
+static int vega20_print_clk_levels(struct smu_context *smu,
+			enum pp_clock_type type, char *buf)
+{
+	int i, now, size = 0;
+	int ret = 0;
+	struct pp_clock_levels_with_latency clocks;
+	struct vega20_single_dpm_table *single_dpm_table;
+	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
+	struct vega20_dpm_table *dpm_table = NULL;
+
+	dpm_table = smu_dpm->dpm_context;
+
+	switch (type) {
+	case PP_SCLK:
+		ret = smu_get_current_clk_freq(smu, PPCLK_GFXCLK, &now);
+		if (ret) {
+			pr_err("Attempt to get current gfx clk Failed!");
+			return ret;
+		}
+
+		single_dpm_table = &(dpm_table->gfx_table);
+		ret = vega20_get_clk_table(smu, &clocks, single_dpm_table);
+		if (ret) {
+			pr_err("Attempt to get gfx clk levels Failed!");
+			return ret;
+		}
+
+		for (i = 0; i < clocks.num_levels; i++)
+			size += sprintf(buf + size, "%d: %uMhz %s\n", i,
+					clocks.data[i].clocks_in_khz / 1000,
+					(clocks.data[i].clocks_in_khz == now * 10)
+					? "*" : "");
+		break;
+
+	case PP_MCLK:
+		ret = smu_get_current_clk_freq(smu, PPCLK_UCLK, &now);
+		if (ret) {
+			pr_err("Attempt to get current mclk Failed!");
+			return ret;
+		}
+
+		single_dpm_table = &(dpm_table->mem_table);
+		ret = vega20_get_clk_table(smu, &clocks, single_dpm_table);
+		if (ret) {
+			pr_err("Attempt to get memory clk levels Failed!");
+			return ret;
+		}
+
+		for (i = 0; i < clocks.num_levels; i++)
+			size += sprintf(buf + size, "%d: %uMhz %s\n",
+				i, clocks.data[i].clocks_in_khz / 1000,
+				(clocks.data[i].clocks_in_khz == now * 10)
+				? "*" : "");
+		break;
+	default:
+		break;
+	}
+	return size;
+}
+
 static const struct pptable_funcs vega20_ppt_funcs = {
 	.alloc_dpm_context = vega20_allocate_dpm_context,
 	.store_powerplay_table = vega20_store_powerplay_table,
@@ -562,6 +640,7 @@ static const struct pptable_funcs vega20_ppt_funcs = {
 	.get_unallowed_feature_mask = vega20_get_unallowed_feature_mask,
 	.set_default_dpm_table = vega20_set_default_dpm_table,
 	.populate_umd_state_clk = vega20_populate_umd_state_clk,
+	.print_clk_levels = vega20_print_clk_levels,
 };
 
 void vega20_set_ppt_funcs(struct smu_context *smu)