Messages in this thread | | | Date | Tue, 21 Nov 2023 11:17:21 +0530 | Subject | Re: [PATCH v3 1/4] phy: core: add notify_connect and notify_disconnect callback | From | Kishon Vijay Abraham I <> |
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Hi Stanley,
On 11/10/2023 11:15 AM, Stanley Chang wrote: > In Realtek SoC, the parameter of usb phy is designed to can dynamic > tuning base on port status. Therefore, add a notify callback of phy > driver when usb connection/disconnection change. > > Signed-off-by: Stanley Chang <stanley_chang@realtek.com> > --- > v1 to v2: > No change > v2 to v3: > No change > --- > drivers/phy/phy-core.c | 47 +++++++++++++++++++++++++++++++++++++++++ > include/linux/phy/phy.h | 18 ++++++++++++++++ > 2 files changed, 65 insertions(+) > > diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c > index 96a0b1e111f3..a84ad4896b7f 100644 > --- a/drivers/phy/phy-core.c > +++ b/drivers/phy/phy-core.c > @@ -489,6 +489,53 @@ int phy_calibrate(struct phy *phy) > } > EXPORT_SYMBOL_GPL(phy_calibrate); > > +/** > + * phy_notify_connect() - phy connect notify > + * @phy: the phy returned by phy_get() > + * @port: the port index for connect > + * > + * If phy need the get connection status, the callback can be used. > + * Returns: %0 if successful, a negative error code otherwise > + */ > +int phy_notify_connect(struct phy *phy, int port) > +{ > + int ret; > + > + if (!phy || !phy->ops->connect) > + return 0; > + > + mutex_lock(&phy->mutex); > + ret = phy->ops->connect(phy, port); > + mutex_unlock(&phy->mutex); > + > + return ret; > +} > +EXPORT_SYMBOL_GPL(phy_notify_connect); > + > +/** > + * phy_notify_disconnect() - phy disconnect notify > + * @phy: the phy returned by phy_get() > + * @port: the port index for disconnect > + * > + * If phy need the get disconnection status, the callback can be used. > + * > + * Returns: %0 if successful, a negative error code otherwise > + */ > +int phy_notify_disconnect(struct phy *phy, int port) > +{ > + int ret; > + > + if (!phy || !phy->ops->disconnect) > + return 0; > + > + mutex_lock(&phy->mutex); > + ret = phy->ops->disconnect(phy, port); > + mutex_unlock(&phy->mutex); > + > + return ret; > +} > +EXPORT_SYMBOL_GPL(phy_notify_disconnect);
Please use EXTCON framework for notifying connect/disconnect.
Thanks, Kishon
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