On 01/25/2013 04:33 AM, Kishon Vijay Abraham I wrote:
> In order to support platforms which has multiple PHY's (of same type) and
> which has multiple USB controllers, a new design is adopted wherin the binding
> information (between the PHY and the USB controller) should be passed to the
> PHY library from platform specific file (board file).
> So added a new API to pass the binding information.
>
> Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
> ---
> drivers/usb/otg/otg.c | 37 +++++++++++++++++++++++++++++++++++++
> include/linux/usb/phy.h | 22 ++++++++++++++++++++++
> 2 files changed, 59 insertions(+)
>
> diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c
> index a30c041..8e756d9 100644
> --- a/drivers/usb/otg/otg.c
> +++ b/drivers/usb/otg/otg.c
> @@ -18,6 +18,7 @@
> #include <linux/usb/otg.h>
>
> static LIST_HEAD(phy_list);
> +static LIST_HEAD(phy_bind_list);
> static DEFINE_SPINLOCK(phy_lock);
>
> static struct usb_phy *__usb_find_phy(struct list_head *list,
> @@ -201,6 +202,42 @@ void usb_remove_phy(struct usb_phy *x)
> }
> EXPORT_SYMBOL(usb_remove_phy);
>
> +/**
> + * usb_bind_phy - bind the phy and the controller that uses the phy
> + * @dev_name: the device name of the device that will bind to the phy
> + * @index: index to specify the port number
> + * @phy_dev_name: the device name of the phy
> + *
> + * Fills the phy_bind structure with the dev_name and phy_dev_name. This will
> + * be used when the phy driver registers the phy and when the controller
> + * requests this phy.
> + *
> + * To be used by platform specific initialization code.
> + */
> +int __init usb_bind_phy(const char *dev_name, u8 index,
> + const char *phy_dev_name)
> +{
> + struct usb_phy_bind *phy_bind;
> + unsigned long flags;
> +
> + phy_bind = kzalloc(sizeof(*phy_bind), GFP_KERNEL);
> + if (!phy_bind) {
> + pr_err("phy_bind(): No memory for phy_bind");
nitpick. Function name is usb_bind_phy() and you don't need to mention it twice ;).
Is it even needed to print here as the user would most likely print it anyways. At least
the user can decide if it needs to be printed or not.
> + return -ENOMEM;
> + }
> +
> + phy_bind->dev_name = dev_name;
> + phy_bind->phy_dev_name = phy_dev_name;
> + phy_bind->index = index;
> +
> + spin_lock_irqsave(&phy_lock, flags);
> + list_add_tail(&phy_bind->list, &phy_bind_list);
> + spin_unlock_irqrestore(&phy_lock, flags);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(usb_bind_phy);
> +
> const char *otg_state_string(enum usb_otg_state state)
> {
> switch (state) {
> diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
> index a29ae1e..e7eb429 100644
> --- a/include/linux/usb/phy.h
> +++ b/include/linux/usb/phy.h
> @@ -106,6 +106,21 @@ struct usb_phy {
> enum usb_device_speed speed);
> };
cheers,
-roger
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