drm/amd/pm: add GFXCLK/SCLK clocks level print support for APUs

add support that allow the userspace tool like RGP to get the GFX clock
value at runtime, the fix follow the old way to show the min/current/max
clocks level for compatible consideration.

=== Test ===
$ cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 200Mhz *
1: 1100Mhz
2: 1600Mhz

then run stress test on one APU system.
$ cat /sys/class/drm/card0/device/pp_dpm_sclk
0: 200Mhz
1: 1040Mhz *
2: 1600Mhz

The current GFXCLK value is updated at runtime.

BugLink: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5260Reviewed-by: Huang Ray <Ray.Huang@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

drivers/gpu/drm/amd/pm/swsmu/smu11/cyan_skillfish_ppt.c

@@ -309,6 +309,7 @@ static int cyan_skillfish_print_clk_levels(struct smu_context *smu,
 {
 	int ret = 0, size = 0;
 	uint32_t cur_value = 0;
+	int i;
 
 	smu_cmn_get_sysfs_buf(&buf, &size);
 
@@ -334,8 +335,6 @@ static int cyan_skillfish_print_clk_levels(struct smu_context *smu,
 		size += sysfs_emit_at(buf, size, "VDDC: %7umV  %10umV\n",
 						CYAN_SKILLFISH_VDDC_MIN, CYAN_SKILLFISH_VDDC_MAX);
 		break;
-	case SMU_GFXCLK:
-	case SMU_SCLK:
 	case SMU_FCLK:
 	case SMU_MCLK:
 	case SMU_SOCCLK:
@@ -346,6 +345,25 @@ static int cyan_skillfish_print_clk_levels(struct smu_context *smu,
 			return ret;
 		size += sysfs_emit_at(buf, size, "0: %uMhz *\n", cur_value);
 		break;
+	case SMU_SCLK:
+	case SMU_GFXCLK:
+		ret = cyan_skillfish_get_current_clk_freq(smu, clk_type, &cur_value);
+		if (ret)
+			return ret;
+		if (cur_value  == CYAN_SKILLFISH_SCLK_MAX)
+			i = 2;
+		else if (cur_value == CYAN_SKILLFISH_SCLK_MIN)
+			i = 0;
+		else
+			i = 1;
+		size += sysfs_emit_at(buf, size, "0: %uMhz %s\n", CYAN_SKILLFISH_SCLK_MIN,
+				i == 0 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "1: %uMhz %s\n",
+				i == 1 ? cur_value : cyan_skillfish_sclk_default,
+				i == 1 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "2: %uMhz %s\n", CYAN_SKILLFISH_SCLK_MAX,
+				i == 2 ? "*" : "");
+		break;
 	default:
 		dev_warn(smu->adev->dev, "Unsupported clock type\n");
 		return ret;

drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c

@@ -683,6 +683,7 @@ static int vangogh_print_clk_levels(struct smu_context *smu,
 	int i, size = 0, ret = 0;
 	uint32_t cur_value = 0, value = 0, count = 0;
 	bool cur_value_match_level = false;
+	uint32_t min, max;
 
 	memset(&metrics, 0, sizeof(metrics));
 
@@ -743,6 +744,13 @@ static int vangogh_print_clk_levels(struct smu_context *smu,
 		if (ret)
 			return ret;
 		break;
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_GetGfxclkFrequency, 0, &cur_value);
+		if (ret) {
+			return ret;
+		}
+		break;
 	default:
 		break;
 	}
@@ -768,6 +776,24 @@ static int vangogh_print_clk_levels(struct smu_context *smu,
 		if (!cur_value_match_level)
 			size += sysfs_emit_at(buf, size, "   %uMhz *\n", cur_value);
 		break;
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		min = (smu->gfx_actual_hard_min_freq > 0) ? smu->gfx_actual_hard_min_freq : smu->gfx_default_hard_min_freq;
+		max = (smu->gfx_actual_soft_max_freq > 0) ? smu->gfx_actual_soft_max_freq : smu->gfx_default_soft_max_freq;
+		if (cur_value  == max)
+			i = 2;
+		else if (cur_value == min)
+			i = 0;
+		else
+			i = 1;
+		size += sysfs_emit_at(buf, size, "0: %uMhz %s\n", min,
+				i == 0 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "1: %uMhz %s\n",
+				i == 1 ? cur_value : VANGOGH_UMD_PSTATE_STANDARD_GFXCLK,
+				i == 1 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "2: %uMhz %s\n", max,
+				i == 2 ? "*" : "");
+		break;
 	default:
 		break;
 	}

drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c

@@ -697,6 +697,11 @@ static int yellow_carp_get_current_clk_freq(struct smu_context *smu,
 	case SMU_FCLK:
 		return smu_cmn_send_smc_msg_with_param(smu,
 				SMU_MSG_GetFclkFrequency, 0, value);
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		return smu_cmn_send_smc_msg_with_param(smu,
+				SMU_MSG_GetGfxclkFrequency, 0, value);
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -967,6 +972,7 @@ static int yellow_carp_print_clk_levels(struct smu_context *smu,
 {
 	int i, size = 0, ret = 0;
 	uint32_t cur_value = 0, value = 0, count = 0;
+	uint32_t min, max;
 
 	smu_cmn_get_sysfs_buf(&buf, &size);
 
@@ -1005,6 +1011,27 @@ static int yellow_carp_print_clk_levels(struct smu_context *smu,
 					cur_value == value ? "*" : "");
 		}
 		break;
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		ret = yellow_carp_get_current_clk_freq(smu, clk_type, &cur_value);
+		if (ret)
+			goto print_clk_out;
+		min = (smu->gfx_actual_hard_min_freq > 0) ? smu->gfx_actual_hard_min_freq : smu->gfx_default_hard_min_freq;
+		max = (smu->gfx_actual_soft_max_freq > 0) ? smu->gfx_actual_soft_max_freq : smu->gfx_default_soft_max_freq;
+		if (cur_value  == max)
+			i = 2;
+		else if (cur_value == min)
+			i = 0;
+		else
+			i = 1;
+		size += sysfs_emit_at(buf, size, "0: %uMhz %s\n", min,
+				i == 0 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "1: %uMhz %s\n",
+				i == 1 ? cur_value : YELLOW_CARP_UMD_PSTATE_GFXCLK,
+				i == 1 ? "*" : "");
+		size += sysfs_emit_at(buf, size, "2: %uMhz %s\n", max,
+				i == 2 ? "*" : "");
+		break;
 	default:
 		break;
 	}

drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.h

@@ -24,5 +24,6 @@
 #define __YELLOW_CARP_PPT_H__
 
 extern void yellow_carp_set_ppt_funcs(struct smu_context *smu);
+#define YELLOW_CARP_UMD_PSTATE_GFXCLK       1100
 
 #endif