[PATCH v3 1/9] phy: add phy_get_bus_width()/phy_set_bus_width() calls

Matt Porter
2013-11-27T16:55:37Z

On Tue, Nov 26, 2013 at 03:46:26PM +0530, Kishon Vijay Abraham I wrote:
> Hi,
>
> On Monday 25 November 2013 11:45 PM, Matt Porter wrote:
> > This adds a pair of APIs that allows the generic PHY subsystem to
> > provide information on the PHY bus width. The PHY provider driver may
> > use phy_set_bus_width() to set the bus width that the PHY supports.
> > The controller driver may then use phy_get_bus_width() to fetch the
> > PHY bus width in order to properly configure the controller.
> >
> > Signed-off-by: Matt Porter <matt.porter@linaro.org>
> > ---
> > include/linux/phy/phy.h | 20 ++++++++++++++++++++
> > 1 file changed, 20 insertions(+)
> >
> > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
> > index 6d72269..6ca6c61 100644
> > --- a/include/linux/phy/phy.h
> > +++ b/include/linux/phy/phy.h
> > @@ -46,6 +46,7 @@ struct phy_ops {
> > * @mutex: mutex to protect phy_ops
> > * @init_count: used to protect when the PHY is used by multiple consumers
> > * @power_count: used to protect when the PHY is used by multiple consumers
> > + * @bus_width: used to specify data width of the PHY bus
> > */
> > struct phy {
> > struct device dev;
> > @@ -55,6 +56,7 @@ struct phy {
> > struct mutex mutex;
> > int init_count;
> > int power_count;
> > + int bus_width;
>
> the bus_width can be part of the attrs struct which you initially proposed.
> Soon there will be requests for other attributes being added (e.g., speed).

Agreed, I'll merge the accessors with the original attrs struct.

> > };
> >
> > /**
> > @@ -127,6 +129,14 @@ int phy_init(struct phy *phy);
> > int phy_exit(struct phy *phy);
> > int phy_power_on(struct phy *phy);
> > int phy_power_off(struct phy *phy);
> > +static inline int phy_get_bus_width(struct phy *phy)
> > +{
> > + return phy->bus_width;
> > +}
> > +static inline void phy_set_bus_width(struct phy *phy, int bus_width)
>
> u32 bus_width?

will update

> > +{
> > + phy->bus_width = bus_width;
> > +}
> > struct phy *phy_get(struct device *dev, const char *string);
> > struct phy *devm_phy_get(struct device *dev, const char *string);
> > void phy_put(struct phy *phy);
> > @@ -199,6 +209,16 @@ static inline int phy_power_off(struct phy *phy)
> > return -ENOSYS;
> > }
> >
> > +static inline int phy_get_bus_width(struct phy *phy)
> > +{
> > + return -ENOSYS;
> > +}
> > +
> > +static inline void phy_set_bus_width(struct phy *phy, bus_width)
>
> er.. has this been compile tested?

*sigh* obviously not, will address this.

-Matt