1 files changed, 47 insertions, 2 deletions

diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index ab7a8252bf41..9f8eb5df279e 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -696,7 +696,7 @@ void of_pci_make_dev_node(struct pci_dev *pdev)
 	if (!name)
 		return;
 
-	cset = kmalloc(sizeof(*cset), GFP_KERNEL);
+	cset = kmalloc_obj(*cset);
 	if (!cset)
 		goto out_free_name;
 	of_changeset_init(cset);
@@ -784,7 +784,7 @@ void of_pci_make_host_bridge_node(struct pci_host_bridge *bridge)
 	if (!name)
 		return;
 
-	cset = kmalloc(sizeof(*cset), GFP_KERNEL);
+	cset = kmalloc_obj(*cset);
 	if (!cset)
 		goto out_free_name;
 	of_changeset_init(cset);
@@ -867,6 +867,7 @@ bool of_pci_supply_present(struct device_node *np)
 
 	return false;
 }
+EXPORT_SYMBOL_GPL(of_pci_supply_present);
 
 #endif /* CONFIG_PCI */
 
@@ -966,3 +967,47 @@ u32 of_pci_get_slot_power_limit(struct device_node *node,
 	return slot_power_limit_mw;
 }
 EXPORT_SYMBOL_GPL(of_pci_get_slot_power_limit);
+
+/**
+ * of_pci_get_equalization_presets - Parses the "eq-presets-Ngts" property.
+ *
+ * @dev: Device containing the properties.
+ * @presets: Pointer to store the parsed data.
+ * @num_lanes: Maximum number of lanes supported.
+ *
+ * If the property is present, read and store the data in the @presets structure.
+ * Else, assign a default value of PCI_EQ_RESV.
+ *
+ * Return: 0 if the property is not available or successfully parsed else
+ * errno otherwise.
+ */
+int of_pci_get_equalization_presets(struct device *dev,
+				    struct pci_eq_presets *presets,
+				    int num_lanes)
+{
+	char name[20];
+	int ret;
+
+	presets->eq_presets_8gts[0] = PCI_EQ_RESV;
+	ret = of_property_read_u16_array(dev->of_node, "eq-presets-8gts",
+					 presets->eq_presets_8gts, num_lanes);
+	if (ret && ret != -EINVAL) {
+		dev_err(dev, "Error reading eq-presets-8gts: %d\n", ret);
+		return ret;
+	}
+
+	for (int i = 0; i < EQ_PRESET_TYPE_MAX - 1; i++) {
+		presets->eq_presets_Ngts[i][0] = PCI_EQ_RESV;
+		snprintf(name, sizeof(name), "eq-presets-%dgts", 8 << (i + 1));
+		ret = of_property_read_u8_array(dev->of_node, name,
+						presets->eq_presets_Ngts[i],
+						num_lanes);
+		if (ret && ret != -EINVAL) {
+			dev_err(dev, "Error reading %s: %d\n", name, ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_pci_get_equalization_presets);