linux-kernel - Re: [PATCH 7/8] phy: helpers for USB ULPI PHY registering

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Message-ID: <20150129050355.GB9098@saruman.tx.rr.com>
Date:	Wed, 28 Jan 2015 23:03:55 -0600
From:	Felipe Balbi <balbi@...com>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
CC:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Baolu Lu <baolu.lu@...ux.intel.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH 7/8] phy: helpers for USB ULPI PHY registering

On Fri, Jan 23, 2015 at 05:12:57PM +0200, Heikki Krogerus wrote:
> ULPI PHYs need to be bound to their controllers with a
> lookup. This adds helpers that the ULPI drivers can use to
> do both, the registration of the PHY and the lookup, at the
> same time.
> 
> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> Cc: Kishon Vijay Abraham I <kishon@...com>
> ---
>  drivers/phy/ulpi_phy.h | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 drivers/phy/ulpi_phy.h
> 
> diff --git a/drivers/phy/ulpi_phy.h b/drivers/phy/ulpi_phy.h
> new file mode 100644
> index 0000000..ac49fb6
> --- /dev/null
> +++ b/drivers/phy/ulpi_phy.h
> @@ -0,0 +1,31 @@
> +#include <linux/phy/phy.h>
> +
> +/**
> + * Helper that registers PHY for a ULPI device and adds a lookup for binding it
> + * and it's controller, which is always the parent.
> + */
> +static inline struct phy
> +*ulpi_phy_create(struct ulpi *ulpi, struct phy_ops *ops)
> +{
> +	struct phy *phy;
> +	int ret;
> +
> +	phy = phy_create(&ulpi->dev, NULL, ops);
> +	if (IS_ERR(phy))
> +		return phy;
> +
> +	ret = phy_create_lookup(phy, "usb2-phy", dev_name(ulpi->dev.parent));

I wonder if this would break DT-based boot where PHY phandle is
available. Kishon ?

-- 
balbi

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