[PATCH v5 2/5] include: linux: phy: Add phy attribute "type" and associated helpers

[Krishna Kurapati]

In cases like USB High-speed phys which can be either USB2 or EUSB2, it is
required to know the type of phy (rather than the operating mode). Add
support to cache the PHY_TYPE and add the following helpers:

- phy_set_type() for the phy drivers (like m31_eusb2 or snps-eusb2) to
declare what type of PHY they are (in this case PHY_TYPE_EUSB2).

- phy_get_type() for the consumers (like USB controllers) to query the
type of phy connected to them.

Signed-off-by: Krishna Kurapati <krishna.kurapati@xxxxxxxxxxxxxxxx>
---
 include/linux/phy/phy.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index ea47975e288a..038c2b58bbe1 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -21,6 +21,8 @@
 #include <linux/phy/phy-lvds.h>
 #include <linux/phy/phy-mipi-dphy.h>
 
+#include <dt-bindings/phy/phy.h>
+
 struct phy;
 
 enum phy_mode {
@@ -152,11 +154,13 @@ struct phy_ops {
  * @bus_width: Data path width implemented by PHY
  * @max_link_rate: Maximum link rate supported by PHY (units to be decided by producer and consumer)
  * @mode: PHY mode
+ * @type: PHY type
  */
 struct phy_attrs {
 	u32			bus_width;
 	u32			max_link_rate;
 	enum phy_mode		mode;
+	int			type;
 };
 
 /**
@@ -262,6 +266,20 @@ static inline enum phy_mode phy_get_mode(struct phy *phy)
 {
 	return phy->attrs.mode;
 }
+
+static inline int phy_get_type(struct phy *phy)
+{
+	if (phy)
+		return phy->attrs.type;
+
+	return PHY_NONE;
+}
+
+static inline void phy_set_type(struct phy *phy, int type)
+{
+	phy->attrs.type = type;
+}
+
 int phy_reset(struct phy *phy);
 int phy_calibrate(struct phy *phy);
 int phy_notify_connect(struct phy *phy, int port);
@@ -393,6 +411,15 @@ static inline enum phy_mode phy_get_mode(struct phy *phy)
 	return PHY_MODE_INVALID;
 }
 
+static inline int phy_get_type(struct phy *phy)
+{
+	return PHY_NONE;
+}
+
+static inline void phy_set_type(struct phy *phy, int type)
+{
+}
+
 static inline int phy_reset(struct phy *phy)
 {
 	if (!phy)

-- 
2.34.1