[PATCH v3 02/12] usb: chipidea: permit driver bindings pass phy pointer

[Felipe Balbi]

On Fri, May 25, 2012 at 10:24:15AM +0800, Richard Zhao wrote:
> Sometimes, the driver bindings may know what phy they use.
> For example, when using device tree, the usb controller may have a
> phandler pointing to usb phy.
> 
> Signed-off-by: Richard Zhao <richard.zhao at freescale.com>
> Reviewed-by: Marek Vasut <marex at denx.de>

Acked-by: Felipe Balbi <balbi at ti.com>

> ---
>  drivers/usb/chipidea/ci.h    |    2 ++
>  drivers/usb/chipidea/core.c  |    4 ++++
>  drivers/usb/chipidea/host.c  |    1 +
>  drivers/usb/chipidea/udc.c   |   11 +++++++----
>  include/linux/usb/chipidea.h |    3 +++
>  5 files changed, 17 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
> index 9655e35..d738603 100644
> --- a/drivers/usb/chipidea/ci.h
> +++ b/drivers/usb/chipidea/ci.h
> @@ -160,6 +160,8 @@ struct ci13xxx {
>  
>  	struct ci13xxx_platform_data	*platdata;
>  	int				vbus_active;
> +	/* FIXME: some day, we'll not use global phy */
> +	bool				global_phy;
>  	struct usb_phy			*transceiver;
>  	struct usb_hcd			*hcd;
>  };
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index c14ce2b..21407e7 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -419,6 +419,10 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
>  
>  	ci->dev = dev;
>  	ci->platdata = dev->platform_data;
> +	if (ci->platdata->phy)
> +		ci->transceiver = ci->platdata->phy;
> +	else
> +		ci->global_phy = true;
>  
>  	ret = hw_device_init(ci, base);
>  	if (ret < 0) {
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index 4a4fdb8..4479f5a 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -121,6 +121,7 @@ static int host_start(struct ci13xxx *ci)
>  	ehci = hcd_to_ehci(hcd);
>  	ehci->caps = ci->hw_bank.cap;
>  	ehci->has_hostpc = ci->hw_bank.lpm;
> +	ehci->transceiver = ci->transceiver;
>  
>  	ret = usb_add_hcd(hcd, 0, 0);
>  	if (ret)
> diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
> index ca9b387..b43b29c 100644
> --- a/drivers/usb/chipidea/udc.c
> +++ b/drivers/usb/chipidea/udc.c
> @@ -1684,7 +1684,8 @@ static int udc_start(struct ci13xxx *ci)
>  
>  	ci->gadget.ep0 = &ci->ep0in->ep;
>  
> -	ci->transceiver = usb_get_transceiver();
> +	if (ci->global_phy) {
> +		ci->transceiver = usb_get_transceiver();
>  
>  	if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
>  		if (ci->transceiver == NULL) {
> @@ -1728,7 +1729,8 @@ static int udc_start(struct ci13xxx *ci)
>  remove_trans:
>  	if (ci->transceiver) {
>  		otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
> -		usb_put_transceiver(ci->transceiver);
> +		if (ci->global_phy)
> +			usb_put_transceiver(ci->transceiver);
>  	}
>  
>  	dev_err(dev, "error = %i\n", retval);
> @@ -1737,7 +1739,7 @@ remove_dbg:
>  unreg_device:
>  	device_unregister(&ci->gadget.dev);
>  put_transceiver:
> -	if (ci->transceiver)
> +	if (ci->transceiver && ci->global_phy)
>  		usb_put_transceiver(ci->transceiver);
>  free_pools:
>  	dma_pool_destroy(ci->td_pool);
> @@ -1771,7 +1773,8 @@ static void udc_stop(struct ci13xxx *ci)
>  
>  	if (ci->transceiver) {
>  		otg_set_peripheral(ci->transceiver->otg, NULL);
> -		usb_put_transceiver(ci->transceiver);
> +		if (ci->global_phy)
> +			usb_put_transceiver(ci->transceiver);
>  	}
>  	dbg_remove_files(&ci->gadget.dev);
>  	device_unregister(&ci->gadget.dev);
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index be078f0..544825d 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -5,12 +5,15 @@
>  #ifndef __LINUX_USB_CHIPIDEA_H
>  #define __LINUX_USB_CHIPIDEA_H
>  
> +#include <linux/usb/otg.h>
> +
>  struct ci13xxx;
>  struct ci13xxx_platform_data {
>  	const char	*name;
>  	/* offset of the capability registers */
>  	uintptr_t	 capoffset;
>  	unsigned	 power_budget;
> +	struct usb_phy	*phy;
>  	unsigned long	 flags;
>  #define CI13XXX_REGS_SHARED		BIT(0)
>  #define CI13XXX_REQUIRE_TRANSCEIVER	BIT(1)
> -- 
> 1.7.5.4
> 
> 

-- 
balbi
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