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From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Benson Leung <bleung@chromium.org>,
	Prashant Malani <pmalani@chromium.org>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
	Felipe Balbi <balbi@kernel.org>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>, Bin Liu <b-liu@ti.com>
Subject: Re: [PATCH v2 5/9] usb: roles: Provide the switch drivers handle to the switch in the API
Date: Mon, 2 Mar 2020 09:43:03 +0200	[thread overview]
Message-ID: <20200302074303.GB27904@kuha.fi.intel.com> (raw)
In-Reply-To: <20200302062302.GE3834@b29397-desktop>

On Mon, Mar 02, 2020 at 06:22:59AM +0000, Peter Chen wrote:
> On 20-02-24 13:14:40, Peter Chen wrote:
> > >   */
> > > -static int cdns3_role_set(struct device *dev, enum usb_role role)
> > > +static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role)
> > >  {
> > > -	struct cdns3 *cdns = dev_get_drvdata(dev);
> > > +	struct cdns3 *cdns = usb_role_switch_get_drvdata(sw);
> > >  	int ret = 0;
> > >  
> > >  	pm_runtime_get_sync(cdns->dev);
> > > @@ -423,12 +423,6 @@ static int cdns3_role_set(struct device *dev, enum usb_role role)
> > >  	return ret;
> > >  }
> > >  
> > > -static const struct usb_role_switch_desc cdns3_switch_desc = {
> > > -	.set = cdns3_role_set,
> > > -	.get = cdns3_role_get,
> > > -	.allow_userspace_control = true,
> > > -};
> > > -
> > >  /**
> > >   * cdns3_probe - probe for cdns3 core device
> > >   * @pdev: Pointer to cdns3 core platform device
> > > @@ -437,6 +431,7 @@ static const struct usb_role_switch_desc cdns3_switch_desc = {
> > >   */
> > >  static int cdns3_probe(struct platform_device *pdev)
> > >  {
> > > +	struct usb_role_switch_desc sw_desc = { };
> > >  	struct device *dev = &pdev->dev;
> > >  	struct resource	*res;
> > >  	struct cdns3 *cdns;
> > > @@ -529,7 +524,12 @@ static int cdns3_probe(struct platform_device *pdev)
> > >  	if (ret)
> > >  		goto err3;
> > >  
> > > -	cdns->role_sw = usb_role_switch_register(dev, &cdns3_switch_desc);
> > > +	sw_desc.set = cdns3_role_set,
> > > +	sw_desc.get = cdns3_role_get,
> > > +	sw_desc.allow_userspace_control = true,
> 
> Heikki, when I try to apply above, and compile, I find above issue,
> the end of code should be ";", but not ",".

OK. I'll fix that. I could have sworn that I tested that, but clearly
I have not done it.

> > > +	sw_desc.driver_data = cdns;
> > > +
> > > +	cdns->role_sw = usb_role_switch_register(dev, &sw_desc);
> > >  	if (IS_ERR(cdns->role_sw)) {
> > >  		ret = PTR_ERR(cdns->role_sw);
> > >  		dev_warn(dev, "Unable to register Role Switch\n");
> > > diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> > > index 52139c2a9924..ae0bdc036464 100644
> > > --- a/drivers/usb/chipidea/core.c
> > > +++ b/drivers/usb/chipidea/core.c
> > > @@ -600,9 +600,9 @@ static int ci_cable_notifier(struct notifier_block *nb, unsigned long event,
> > >  	return NOTIFY_DONE;
> > >  }
> > >  
> > > -static enum usb_role ci_usb_role_switch_get(struct device *dev)
> > > +static enum usb_role ci_usb_role_switch_get(struct usb_role_switch *sw)
> > >  {
> > > -	struct ci_hdrc *ci = dev_get_drvdata(dev);
> > > +	struct ci_hdrc *ci = usb_role_switch_get_drvdata(sw);
> > >  	enum usb_role role;
> > >  	unsigned long flags;
> > >  
> > > @@ -613,9 +613,10 @@ static enum usb_role ci_usb_role_switch_get(struct device *dev)
> > >  	return role;
> > >  }
> > >  
> > > -static int ci_usb_role_switch_set(struct device *dev, enum usb_role role)
> > > +static int ci_usb_role_switch_set(struct usb_role_switch *sw,
> > > +				  enum usb_role role)
> > >  {
> > > -	struct ci_hdrc *ci = dev_get_drvdata(dev);
> > > +	struct ci_hdrc *ci = usb_role_switch_get_drvdata(sw);
> > >  	struct ci_hdrc_cable *cable = NULL;
> > >  	enum usb_role current_role = ci_role_to_usb_role(ci);
> > >  	enum ci_role ci_role = usb_role_to_ci_role(role);
> > > @@ -1118,6 +1119,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
> > >  	}
> > >  
> > >  	if (ci_role_switch.fwnode) {
> > > +		ci_role_switch.driver_data = ci;
> 
> And chipidea code, better change it like cdns3's, otherwise, the
> switch desc for all controllers have the same driver_data.

OK.

thanks,

-- 
heikki

  reply	other threads:[~2020-03-02  7:43 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-24 12:13 [PATCH v2 0/9] usb: typec: Driver for Intel PMC Mux-Agent Heikki Krogerus
2020-02-24 12:13 ` [PATCH v2 1/9] usb: typec: mux: Allow the muxes to be named Heikki Krogerus
2020-02-24 12:13 ` [PATCH v2 2/9] usb: typec: mux: Add helpers for setting the mux state Heikki Krogerus
2020-02-24 12:14 ` [PATCH v2 3/9] usb: typec: mux: Allow the mux handles to be requested with fwnode Heikki Krogerus
2020-02-24 12:14 ` [PATCH v2 4/9] usb: roles: Leave the private driver data pointer to the drivers Heikki Krogerus
2020-02-24 12:14 ` [PATCH v2 5/9] usb: roles: Provide the switch drivers handle to the switch in the API Heikki Krogerus
2020-02-24 13:14   ` Peter Chen
2020-03-02  6:22     ` Peter Chen
2020-03-02  7:43       ` Heikki Krogerus [this message]
2020-03-02  8:01         ` Heikki Krogerus
2020-03-02  9:17       ` Heikki Krogerus
2020-03-02 10:14         ` Peter Chen
2020-02-24 12:14 ` [PATCH v2 6/9] usb: roles: Allow the role switches to be named Heikki Krogerus
2020-02-24 12:14 ` [PATCH v2 7/9] device property: Export fwnode_get_name() Heikki Krogerus
2020-02-24 16:09   ` Rafael J. Wysocki
2020-02-24 12:14 ` [PATCH v2 8/9] usb: typec: Add definitions for Thunderbolt 3 Alternate Mode Heikki Krogerus
2020-02-24 12:14 ` [PATCH v2 9/9] usb: typec: driver for Intel PMC mux control Heikki Krogerus

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