Hi Kishon, > From: Kishon Vijay Abraham I [mailto:kishon@xxxxxx] > Sent: Friday, December 13, 2013 3:45 PM > > Hi, > > On Friday 13 December 2013 07:32 PM, Kamil Debski wrote: > > Previously the of_phy_get function took a struct device * and was > > declared static. It was impossible to call it from another driver and > > thus it was impossible to get phy defined for a given node. The old > > function was renamed to _of_phy_get and was left for internal use. > > of_phy_get function was added and it was exported. The function > > enables to get a phy for a given device tree node. > > > > Signed-off-by: Kamil Debski <k.debski@xxxxxxxxxxx> > > --- > > It seems that my git send-email is playing up and sent the previous > > emails without from. This is a resend. Sorry for any confusion. > > --- > > drivers/phy/phy-core.c | 41 ++++++++++++++++++++++++++++++++----- > ---- > > include/linux/phy/phy.h | 1 + > > 2 files changed, 33 insertions(+), 9 deletions(-) > > > > diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index > > 03cf8fb..f0dbd42 100644 > > --- a/drivers/phy/phy-core.c > > +++ b/drivers/phy/phy-core.c > > @@ -240,8 +240,8 @@ out: > > EXPORT_SYMBOL_GPL(phy_power_off); > > > > /** > > - * of_phy_get() - lookup and obtain a reference to a phy by phandle > > - * @dev: device that requests this phy > > + * _of_phy_get() - lookup and obtain a reference to a phy by phandle > > + * @np: device_node for which to get the phy > > * @index: the index of the phy > > * > > * Returns the phy associated with the given phandle value, @@ > > -250,20 +250,17 @@ EXPORT_SYMBOL_GPL(phy_power_off); > > * not yet loaded. This function uses of_xlate call back function > provided > > * while registering the phy_provider to find the phy instance. > > */ > > -static struct phy *of_phy_get(struct device *dev, int index) > > +static struct phy *_of_phy_get(struct device_node *np, int index) > > { > > int ret; > > struct phy_provider *phy_provider; > > struct phy *phy = NULL; > > struct of_phandle_args args; > > > > - ret = of_parse_phandle_with_args(dev->of_node, "phys", "#phy- > cells", > > + ret = of_parse_phandle_with_args(np, "phys", "#phy-cells", > > index, &args); > > - if (ret) { > > - dev_dbg(dev, "failed to get phy in %s node\n", > > - dev->of_node->full_name); > > + if (ret) > > return ERR_PTR(-ENODEV); > > - } > > > > mutex_lock(&phy_provider_mutex); > > phy_provider = of_phy_provider_lookup(args.np); @@ -283,6 +280,32 > @@ > > err0: > > } > > > > /** > > + * of_phy_get() - lookup and obtain a reference to a phy using a > device_node. > > + * @np: device_node for which to get the phy > > + * @index: the index of the phy > > Would be better if the user can get the PHY by string instead of index. Ok, this sounds doable. I will add of_phy_get_by_name analogous to the clk framework. > > + * > > + * Returns the phy driver, after getting a refcount to it; or > > + * -ENODEV if there is no such phy. The caller is responsible for > > + * calling phy_put() to release that count. > > + */ > > +struct phy *of_phy_get(struct device_node *np, int index) { > > + struct phy *phy = NULL; > > + > > + phy = _of_phy_get(np, index); > > + if (IS_ERR(phy)) > dev_err here? dev_err requires a dev, so it is not possible with the arguments used. And we do not want to add any extra parameters to keep the function call analogous to other of_*_get (as for example of_clk_get). Best wishes, -- Kamil Debski Samsung R&D Institute Poland -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
