[PATCH v3 2/3] amdgpu/pm: Implemention of emit_clk_levels for navi10 that accepts buffer base and write offset

[Darren Powell <darren.powell@amd.com>]

   (v3)
     Rewrote patchset to order patches as (API, hw impl, usecase)

     - implement emit_clk_levels for navi10, based on print_clk_levels, but
       using sysfs_emit without smu_cmn_get_sysfs() workaround

Signed-off-by: Darren Powell <darren.powell@amd.com>
---
 .../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c   | 188 ++++++++++++++++++
 1 file changed, 188 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
index 37e11716e919..4bcef7d1a0d6 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
@@ -1261,6 +1261,193 @@ static void navi10_od_setting_get_range(struct smu_11_0_overdrive_table *od_tabl
 		*max = od_table->max[setting];
 }
 
+static int navi10_emit_clk_levels(struct smu_context *smu,
+			enum smu_clk_type clk_type, char *buf, int *offset)
+{
+	uint16_t *curve_settings;
+	int ret = 0;
+	uint32_t cur_value = 0, value = 0;
+	uint32_t freq_values[3] = {0};
+	uint32_t i, levels, mark_index = 0, count = 0;
+	struct smu_table_context *table_context = &smu->smu_table;
+	uint32_t gen_speed, lane_width;
+	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
+	struct smu_11_0_dpm_context *dpm_context = smu_dpm->dpm_context;
+	PPTable_t *pptable = (PPTable_t *)table_context->driver_pptable;
+	OverDriveTable_t *od_table =
+		(OverDriveTable_t *)table_context->overdrive_table;
+	struct smu_11_0_overdrive_table *od_settings = smu->od_settings;
+	uint32_t min_value, max_value;
+
+	switch (clk_type) {
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+	case SMU_SOCCLK:
+	case SMU_MCLK:
+	case SMU_UCLK:
+	case SMU_FCLK:
+	case SMU_VCLK:
+	case SMU_DCLK:
+	case SMU_DCEFCLK:
+		ret = navi10_get_current_clk_freq_by_table(smu, clk_type, &cur_value);
+		if (ret)
+			return ret;
+
+		ret = smu_v11_0_get_dpm_level_count(smu, clk_type, &count);
+		if (ret)
+			return ret;
+
+		if (!navi10_is_support_fine_grained_dpm(smu, clk_type)) {
+			for (i = 0; i < count; i++) {
+				ret = smu_v11_0_get_dpm_freq_by_index(smu, clk_type, i, &value);
+				if (ret)
+					return ret;
+
+				*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n", i, value,
+						cur_value == value ? "*" : "");
+
+			}
+		} else {
+			ret = smu_v11_0_get_dpm_freq_by_index(smu, clk_type, 0, &freq_values[0]);
+			if (ret)
+				return ret;
+			ret = smu_v11_0_get_dpm_freq_by_index(smu, clk_type, count - 1, &freq_values[2]);
+			if (ret)
+				return ret;
+
+			freq_values[1] = cur_value;
+			mark_index = cur_value == freq_values[0] ? 0 :
+				     cur_value == freq_values[2] ? 2 : 1;
+
+			levels = 3;
+			if (mark_index != 1) {
+				levels = 2;
+				freq_values[1] = freq_values[2];
+			}
+
+			for (i = 0; i < levels; i++) {
+				*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n", i, freq_values[i],
+						i == mark_index ? "*" : "");
+			}
+		}
+		break;
+	case SMU_PCIE:
+		gen_speed = smu_v11_0_get_current_pcie_link_speed_level(smu);
+		lane_width = smu_v11_0_get_current_pcie_link_width_level(smu);
+		for (i = 0; i < NUM_LINK_LEVELS; i++) {
+			*offset += sysfs_emit_at(buf, *offset, "%d: %s %s %dMhz %s\n", i,
+					(dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 0) ? "2.5GT/s," :
+					(dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 1) ? "5.0GT/s," :
+					(dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 2) ? "8.0GT/s," :
+					(dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 3) ? "16.0GT/s," : "",
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 1) ? "x1" :
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 2) ? "x2" :
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 3) ? "x4" :
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 4) ? "x8" :
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 5) ? "x12" :
+					(dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 6) ? "x16" : "",
+					pptable->LclkFreq[i],
+					(gen_speed == dpm_context->dpm_tables.pcie_table.pcie_gen[i]) &&
+					(lane_width == dpm_context->dpm_tables.pcie_table.pcie_lane[i]) ?
+					"*" : "");
+		}
+		break;
+	case SMU_OD_SCLK:
+		if (!smu->od_enabled || !od_table || !od_settings)
+			return -EOPNOTSUPP;
+		if (!navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_GFXCLK_LIMITS))
+			break;
+		*offset += sysfs_emit_at(buf, *offset, "OD_SCLK:\n0: %uMhz\n1: %uMhz\n",
+					  od_table->GfxclkFmin, od_table->GfxclkFmax);
+		break;
+	case SMU_OD_MCLK:
+		if (!smu->od_enabled || !od_table || !od_settings)
+			return -EOPNOTSUPP;
+		if (!navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_UCLK_MAX))
+			break;
+		*offset += sysfs_emit_at(buf, *offset, "OD_MCLK:\n1: %uMHz\n", od_table->UclkFmax);
+		break;
+	case SMU_OD_VDDC_CURVE:
+		if (!smu->od_enabled || !od_table || !od_settings)
+			return -EOPNOTSUPP;
+		if (!navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_GFXCLK_CURVE))
+			break;
+		*offset += sysfs_emit_at(buf, *offset, "OD_VDDC_CURVE:\n");
+		for (i = 0; i < 3; i++) {
+			switch (i) {
+			case 0:
+				curve_settings = &od_table->GfxclkFreq1;
+				break;
+			case 1:
+				curve_settings = &od_table->GfxclkFreq2;
+				break;
+			case 2:
+				curve_settings = &od_table->GfxclkFreq3;
+				break;
+			default:
+				break;
+			}
+			*offset += sysfs_emit_at(buf, *offset, "%d: %uMHz %umV\n",
+						  i, curve_settings[0],
+					curve_settings[1] / NAVI10_VOLTAGE_SCALE);
+		}
+		break;
+	case SMU_OD_RANGE:
+		if (!smu->od_enabled || !od_table || !od_settings)
+			return -EOPNOTSUPP;
+		*offset += sysfs_emit_at(buf, *offset, "%s:\n", "OD_RANGE");
+
+		if (navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_GFXCLK_LIMITS)) {
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_GFXCLKFMIN,
+						    &min_value, NULL);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_GFXCLKFMAX,
+						    NULL, &max_value);
+			*offset+= sysfs_emit_at(buf, *offset, "SCLK: %7uMhz %10uMhz\n",
+					min_value, max_value);
+		}
+
+		if (navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_UCLK_MAX)) {
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_UCLKFMAX,
+						    &min_value, &max_value);
+			*offset+= sysfs_emit_at(buf, *offset, "MCLK: %7uMhz %10uMhz\n",
+					min_value, max_value);
+		}
+
+		if (navi10_od_feature_is_supported(od_settings, SMU_11_0_ODCAP_GFXCLK_CURVE)) {
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEFREQ_P1,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_SCLK[0]: %7uMhz %10uMhz\n",
+					      min_value, max_value);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEVOLTAGE_P1,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_VOLT[0]: %7dmV %11dmV\n",
+					      min_value, max_value);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEFREQ_P2,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_SCLK[1]: %7uMhz %10uMhz\n",
+					      min_value, max_value);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEVOLTAGE_P2,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_VOLT[1]: %7dmV %11dmV\n",
+					      min_value, max_value);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEFREQ_P3,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_SCLK[2]: %7uMhz %10uMhz\n",
+					      min_value, max_value);
+			navi10_od_setting_get_range(od_settings, SMU_11_0_ODSETTING_VDDGFXCURVEVOLTAGE_P3,
+						    &min_value, &max_value);
+			*offset += sysfs_emit_at(buf, *offset, "VDDC_CURVE_VOLT[2]: %7dmV %11dmV\n",
+					      min_value, max_value);
+		}
+
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
 static int navi10_print_clk_levels(struct smu_context *smu,
 			enum smu_clk_type clk_type, char *buf)
 {
@@ -3238,6 +3425,7 @@ static const struct pptable_funcs navi10_ppt_funcs = {
 	.i2c_init = navi10_i2c_control_init,
 	.i2c_fini = navi10_i2c_control_fini,
 	.print_clk_levels = navi10_print_clk_levels,
+	.emit_clk_levels = navi10_emit_clk_levels,
 	.force_clk_levels = navi10_force_clk_levels,
 	.populate_umd_state_clk = navi10_populate_umd_state_clk,
 	.get_clock_by_type_with_latency = navi10_get_clock_by_type_with_latency,
-- 
2.34.1