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Subject[PATCH v2 1/2] phy: Add max_link_rate as a PHY attribute and APIs to get/set phy_attrs
Date
The patch adds a pair of APIs that allows generic PHY subsystem
to get/set PHY attributes supported by the PHY. The PHY provider
driver may use phy_set_attrs() to set phy attributes that the PHY
supports. The controller driver may then use phy_get_attrs()
to fetch the PHY attributes to properly configure the controller.

Signed-off-by: Yuti Amonkar <yamonkar@cadence.com>
---
include/linux/phy/phy.h | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)

diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index bcee8eba62b3..48693321ae36 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -119,6 +119,7 @@ struct phy_ops {
*/
struct phy_attrs {
u32 bus_width;
+ u32 max_link_rate;
enum phy_mode mode;
};

@@ -231,6 +232,20 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width)
{
phy->attrs.bus_width = bus_width;
}
+
+static inline void phy_get_attrs(struct phy *phy, struct phy_attrs *attrs)
+{
+ attrs->bus_width = phy->attrs.bus_width;
+ attrs->max_link_rate = phy->attrs.max_link_rate;
+ attrs->mode = phy->attrs.mode;
+}
+
+static inline void phy_set_attrs(struct phy *phy, struct phy_attrs attrs)
+{
+ phy->attrs.bus_width = attrs.bus_width;
+ phy->attrs.max_link_rate = attrs.max_link_rate;
+ phy->attrs.mode = attrs.mode;
+}
struct phy *phy_get(struct device *dev, const char *string);
struct phy *phy_optional_get(struct device *dev, const char *string);
struct phy *devm_phy_get(struct device *dev, const char *string);
@@ -389,6 +404,16 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width)
return;
}

+static inline void phy_get_attrs(struct phy *phy, struct phy_attrs *attrs)
+{
+ return;
+}
+
+static inline void phy_set_attrs(struct phy *phy, struct phy_attrs attrs)
+{
+ return;
+}
+
static inline struct phy *phy_get(struct device *dev, const char *string)
{
return ERR_PTR(-ENOSYS);
--
2.17.1
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