amdgpu/pm: Implement emit_clk_levels for vega10

   (v1)
     - implement emit_clk_levels for vega10, based on print_clk_levels,
       but using sysfs_emit rather than sprintf
     - modify local int vars to use uint32_t to match arg type of
       called functions
     - add return of error codes
     - refactor OD_XXX cases to return early with -EOPNOTSUPP if
       !(hwmgr->od_enabled)
Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c

@@ -4625,6 +4625,152 @@ static int vega10_get_current_pcie_link_speed_level(struct pp_hwmgr *hwmgr)
 		>> PSWUSP0_PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE__SHIFT;
 }
 
+static int vega10_emit_clock_levels(struct pp_hwmgr *hwmgr,
+				    enum pp_clock_type type, char *buf, int *offset)
+{
+	struct vega10_hwmgr *data = hwmgr->backend;
+	struct vega10_single_dpm_table *sclk_table = &(data->dpm_table.gfx_table);
+	struct vega10_single_dpm_table *mclk_table = &(data->dpm_table.mem_table);
+	struct vega10_single_dpm_table *soc_table = &(data->dpm_table.soc_table);
+	struct vega10_single_dpm_table *dcef_table = &(data->dpm_table.dcef_table);
+	struct vega10_odn_clock_voltage_dependency_table *podn_vdd_dep = NULL;
+	uint32_t gen_speed, lane_width, current_gen_speed, current_lane_width;
+	PPTable_t *pptable = &(data->smc_state_table.pp_table);
+
+	uint32_t i, now, count = 0;
+	int ret = 0;
+
+	switch (type) {
+	case PP_SCLK:
+		if (data->registry_data.sclk_dpm_key_disabled)
+			return -EOPNOTSUPP;
+
+		ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetCurrentGfxclkIndex, &now);
+		if (unlikely(ret != 0))
+			return ret;
+
+		if (hwmgr->pp_one_vf &&
+		    (hwmgr->dpm_level == AMD_DPM_FORCED_LEVEL_PROFILE_PEAK))
+			count = 5;
+		else
+			count = sclk_table->count;
+		for (i = 0; i < count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n",
+					i, sclk_table->dpm_levels[i].value / 100,
+					(i == now) ? "*" : "");
+		break;
+	case PP_MCLK:
+		if (data->registry_data.mclk_dpm_key_disabled)
+			return -EOPNOTSUPP;
+
+		ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetCurrentUclkIndex, &now);
+		if (unlikely(ret != 0))
+			return ret;
+
+		for (i = 0; i < mclk_table->count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n",
+					i, mclk_table->dpm_levels[i].value / 100,
+					(i == now) ? "*" : "");
+		break;
+	case PP_SOCCLK:
+		if (data->registry_data.socclk_dpm_key_disabled)
+			return -EOPNOTSUPP;
+
+		ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetCurrentSocclkIndex, &now);
+		if (unlikely(ret != 0))
+			return ret;
+
+		for (i = 0; i < soc_table->count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n",
+					i, soc_table->dpm_levels[i].value / 100,
+					(i == now) ? "*" : "");
+		break;
+	case PP_DCEFCLK:
+		if (data->registry_data.dcefclk_dpm_key_disabled)
+			return -EOPNOTSUPP;
+
+		ret = smum_send_msg_to_smc_with_parameter(hwmgr,
+							  PPSMC_MSG_GetClockFreqMHz,
+							  CLK_DCEFCLK, &now);
+		if (unlikely(ret != 0))
+			return ret;
+
+		for (i = 0; i < dcef_table->count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %uMhz %s\n",
+					i, dcef_table->dpm_levels[i].value / 100,
+					(dcef_table->dpm_levels[i].value / 100 == now) ?
+					"*" : "");
+		break;
+	case PP_PCIE:
+		current_gen_speed =
+			vega10_get_current_pcie_link_speed_level(hwmgr);
+		current_lane_width =
+			vega10_get_current_pcie_link_width_level(hwmgr);
+		for (i = 0; i < NUM_LINK_LEVELS; i++) {
+			gen_speed = pptable->PcieGenSpeed[i];
+			lane_width = pptable->PcieLaneCount[i];
+
+			*offset += sysfs_emit_at(buf, *offset, "%d: %s %s %s\n", i,
+					(gen_speed == 0) ? "2.5GT/s," :
+					(gen_speed == 1) ? "5.0GT/s," :
+					(gen_speed == 2) ? "8.0GT/s," :
+					(gen_speed == 3) ? "16.0GT/s," : "",
+					(lane_width == 1) ? "x1" :
+					(lane_width == 2) ? "x2" :
+					(lane_width == 3) ? "x4" :
+					(lane_width == 4) ? "x8" :
+					(lane_width == 5) ? "x12" :
+					(lane_width == 6) ? "x16" : "",
+					(current_gen_speed == gen_speed) &&
+					(current_lane_width == lane_width) ?
+					"*" : "");
+		}
+		break;
+
+	case OD_SCLK:
+		if (!hwmgr->od_enabled)
+			return -EOPNOTSUPP;
+
+		*offset += sysfs_emit_at(buf, *offset, "%s:\n", "OD_SCLK");
+		podn_vdd_dep = &data->odn_dpm_table.vdd_dep_on_sclk;
+		for (i = 0; i < podn_vdd_dep->count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %10uMhz %10umV\n",
+						 i, podn_vdd_dep->entries[i].clk / 100,
+						 podn_vdd_dep->entries[i].vddc);
+		break;
+	case OD_MCLK:
+		if (!hwmgr->od_enabled)
+			return -EOPNOTSUPP;
+
+		*offset += sysfs_emit_at(buf, *offset, "%s:\n", "OD_MCLK");
+		podn_vdd_dep = &data->odn_dpm_table.vdd_dep_on_mclk;
+		for (i = 0; i < podn_vdd_dep->count; i++)
+			*offset += sysfs_emit_at(buf, *offset, "%d: %10uMhz %10umV\n",
+						 i, podn_vdd_dep->entries[i].clk/100,
+						 podn_vdd_dep->entries[i].vddc);
+		break;
+	case OD_RANGE:
+		if (!hwmgr->od_enabled)
+			return -EOPNOTSUPP;
+
+		*offset += sysfs_emit_at(buf, *offset, "%s:\n", "OD_RANGE");
+		*offset += sysfs_emit_at(buf, *offset, "SCLK: %7uMHz %10uMHz\n",
+					 data->golden_dpm_table.gfx_table.dpm_levels[0].value/100,
+				hwmgr->platform_descriptor.overdriveLimit.engineClock/100);
+		*offset += sysfs_emit_at(buf, *offset, "MCLK: %7uMHz %10uMHz\n",
+					 data->golden_dpm_table.mem_table.dpm_levels[0].value/100,
+				hwmgr->platform_descriptor.overdriveLimit.memoryClock/100);
+		*offset += sysfs_emit_at(buf, *offset, "VDDC: %7umV %11umV\n",
+					 data->odn_dpm_table.min_vddc,
+					 data->odn_dpm_table.max_vddc);
+		break;
+	default:
+		ret = -ENOENT;
+		break;
+	}
+	return ret;
+}
+
 static int vega10_print_clock_levels(struct pp_hwmgr *hwmgr,
 		enum pp_clock_type type, char *buf)
 {
@@ -5559,6 +5705,7 @@ static const struct pp_hwmgr_func vega10_hwmgr_funcs = {
 	.set_watermarks_for_clocks_ranges = vega10_set_watermarks_for_clocks_ranges,
 	.display_clock_voltage_request = vega10_display_clock_voltage_request,
 	.force_clock_level = vega10_force_clock_level,
+	.emit_clock_levels = vega10_emit_clock_levels,
 	.print_clock_levels = vega10_print_clock_levels,
 	.display_config_changed = vega10_display_configuration_changed_task,
 	.powergate_uvd = vega10_power_gate_uvd,