phy: Add USB speed related PHY modes

Add following USB speed related PHY modes:
LS (Low Speed), FS (Full Speed), HS (High Speed), SS (Super Speed)

Speed related information is required by some QCOM PHY drivers
to program PHY monitor resume/remote-wakeup events in suspended
state. Speed is needed in order to set correct polarity of wakeup
events for detection. E.g. QUSB2 PHY monitors DP/DM line state
depending on whether speed is LS or FS/HS to detect resume.
Similarly QMP USB3 PHY in SS mode should monitor RX terminations
attach/detach and LFPS events depending on SSPHY is active or not.

Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 8f6e8e2..09ac8af 100644 (file)
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -351,6 +351,8 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode)
 
        mutex_lock(&phy->mutex);
        ret = phy->ops->set_mode(phy, mode);
+       if (!ret)
+               phy->attrs.mode = mode;
        mutex_unlock(&phy->mutex);
 
        return ret;

diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index 4f8423a..485469e 100644 (file)
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -25,7 +25,15 @@ struct phy;
 enum phy_mode {
        PHY_MODE_INVALID,
        PHY_MODE_USB_HOST,
+       PHY_MODE_USB_HOST_LS,
+       PHY_MODE_USB_HOST_FS,
+       PHY_MODE_USB_HOST_HS,
+       PHY_MODE_USB_HOST_SS,
        PHY_MODE_USB_DEVICE,
+       PHY_MODE_USB_DEVICE_LS,
+       PHY_MODE_USB_DEVICE_FS,
+       PHY_MODE_USB_DEVICE_HS,
+       PHY_MODE_USB_DEVICE_SS,
        PHY_MODE_USB_OTG,
        PHY_MODE_SGMII,
        PHY_MODE_10GKR,
@@ -61,6 +69,7 @@ struct phy_ops {
  */
 struct phy_attrs {
        u32                     bus_width;
+       enum phy_mode           mode;
 };
 
 /**
@@ -144,6 +153,10 @@ int phy_exit(struct phy *phy);
 int phy_power_on(struct phy *phy);
 int phy_power_off(struct phy *phy);
 int phy_set_mode(struct phy *phy, enum phy_mode mode);
+static inline enum phy_mode phy_get_mode(struct phy *phy)
+{
+       return phy->attrs.mode;
+}
 int phy_reset(struct phy *phy);
 int phy_calibrate(struct phy *phy);
 static inline int phy_get_bus_width(struct phy *phy)
@@ -260,6 +273,11 @@ static inline int phy_set_mode(struct phy *phy, enum phy_mode mode)
        return -ENOSYS;
 }
 
+static inline enum phy_mode phy_get_mode(struct phy *phy)
+{
+       return PHY_MODE_INVALID;
+}
+
 static inline int phy_reset(struct phy *phy)
 {
        if (!phy)