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 <mgau...@codeaurora.org>
---
drivers/phy/phy-core.c | 2 ++
include/linux/phy/phy.h | 18 ++++++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index b4964b0..3c31ce5 100644
--- 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 d8da3e5..b951f90 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -25,7 +25,15 @@
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 @@ static inline void *phy_get_drvdata(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)
--
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a Linux Foundation Collaborative Project
