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Date:   Tue, 18 Feb 2020 07:23:41 +0000
From:   Peter Chen <peter.chen@....com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>
CC:     Felipe Balbi <balbi@...nel.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Bin Liu <b-liu@...com>, Benson Leung <bleung@...omium.org>,
        Prashant Malani <pmalani@...omium.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH 5/9] usb: roles: Provide the switch drivers handle to the
 switch in the API

On 20-02-13 15:32:39, Heikki Krogerus wrote:
> Hi guys,
> 
> On Thu, Feb 13, 2020 at 04:24:24PM +0300, Heikki Krogerus wrote:
> > The USB role callback functions had a parameter pointing to
> > the parent device (struct device) of the switch. The
> > assumption was that the switch parent is always the
> > controller. Firstly, that may not be true in every case, and
> > secondly, it prevents us from supporting devices that supply
> > multiple muxes.
> > 
> > Changing the first parameter of usb_role_switch_set_t and
> > usb_role_switch_get_t from struct device to struct
> > usb_role_switch.
> > 
> > Cc: Peter Chen <Peter.Chen@....com>
> > Cc: Felipe Balbi <balbi@...nel.org>
> > Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
> > Cc: Bin Liu <b-liu@...com>
> 
> This was meant for you guys, but I suppressed CC for everybody. Sorry
> about that.
> 
> > Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> > ---
> >  drivers/usb/cdns3/core.c                      | 10 ++++---
> >  drivers/usb/chipidea/core.c                   | 10 ++++---
> >  drivers/usb/dwc3/dwc3-meson-g12a.c            | 10 ++++---
> >  drivers/usb/gadget/udc/renesas_usb3.c         | 26 ++++++++++---------
> >  drivers/usb/gadget/udc/tegra-xudc.c           |  8 +++---
> >  drivers/usb/mtu3/mtu3_dr.c                    |  9 ++++---
> >  drivers/usb/musb/mediatek.c                   |  9 ++++---
> >  drivers/usb/roles/class.c                     |  4 +--
> >  .../usb/roles/intel-xhci-usb-role-switch.c    | 26 +++++++++++--------
> >  include/linux/usb/role.h                      |  5 ++--
> >  10 files changed, 67 insertions(+), 50 deletions(-)
> > 
> > diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> > index c2123ef8d8a3..a7a7cb9a2a48 100644
> > --- a/drivers/usb/cdns3/core.c
> > +++ b/drivers/usb/cdns3/core.c
> > @@ -330,9 +330,9 @@ int cdns3_hw_role_switch(struct cdns3 *cdns)
> >   *
> >   * Returns role
> >   */
> > -static enum usb_role cdns3_role_get(struct device *dev)
> > +static enum usb_role cdns3_role_get(struct usb_role_switch *sw)
> >  {
> > -	struct cdns3 *cdns = dev_get_drvdata(dev);
> > +	struct cdns3 *cdns = usb_role_switch_get_drvdata(sw);
> >  
> >  	return cdns->role;
> >  }
> > @@ -346,9 +346,9 @@ static enum usb_role cdns3_role_get(struct device *dev)
> >   * - Role switch for dual-role devices
> >   * - USB_ROLE_GADGET <--> USB_ROLE_NONE for peripheral-only devices
> >   */
> > -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);
> > @@ -536,6 +536,8 @@ static int cdns3_probe(struct platform_device *pdev)
> >  		goto err4;
> >  	}
> >  
> > +	usb_role_switch_set_drvdata(cdns->role_sw, cdns);
> > +
> >  	ret = cdns3_drd_init(cdns);
> >  	if (ret)
> >  		goto err5;
> > 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;
> >  		ci->role_switch = usb_role_switch_register(dev,
> >  					&ci_role_switch);

Why the struct usb_role_switch_desc needs drvdata, the struct
usb_role_switch has already one?

Peter
> >  		if (IS_ERR(ci->role_switch)) {
> > diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
> > index 8a3ec1a951fe..3309ce90ca14 100644
> > --- a/drivers/usb/dwc3/dwc3-meson-g12a.c
> > +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
> > @@ -321,9 +321,10 @@ static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv,
> >  	return 0;
> >  }
> >  
> > -static int dwc3_meson_g12a_role_set(struct device *dev, enum usb_role role)
> > +static int dwc3_meson_g12a_role_set(struct usb_role_switch *sw,
> > +				    enum usb_role role)
> >  {
> > -	struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
> > +	struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw);
> >  	enum phy_mode mode;
> >  
> >  	if (role == USB_ROLE_NONE)
> > @@ -338,9 +339,9 @@ static int dwc3_meson_g12a_role_set(struct device *dev, enum usb_role role)
> >  	return dwc3_meson_g12a_otg_mode_set(priv, mode);
> >  }
> >  
> > -static enum usb_role dwc3_meson_g12a_role_get(struct device *dev)
> > +static enum usb_role dwc3_meson_g12a_role_get(struct usb_role_switch *sw)
> >  {
> > -	struct dwc3_meson_g12a *priv = dev_get_drvdata(dev);
> > +	struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw);
> >  
> >  	return priv->otg_phy_mode == PHY_MODE_USB_HOST ?
> >  		USB_ROLE_HOST : USB_ROLE_DEVICE;
> > @@ -499,6 +500,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
> >  	priv->switch_desc.allow_userspace_control = true;
> >  	priv->switch_desc.set = dwc3_meson_g12a_role_set;
> >  	priv->switch_desc.get = dwc3_meson_g12a_role_get;
> > +	priv->switch_desc.driver_data = priv;
> >  
> >  	priv->role_switch = usb_role_switch_register(dev, &priv->switch_desc);
> >  	if (IS_ERR(priv->role_switch))
> > diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
> > index c5c3c14df67a..4da90160b400 100644
> > --- a/drivers/usb/gadget/udc/renesas_usb3.c
> > +++ b/drivers/usb/gadget/udc/renesas_usb3.c
> > @@ -2355,14 +2355,14 @@ static const struct usb_gadget_ops renesas_usb3_gadget_ops = {
> >  	.set_selfpowered	= renesas_usb3_set_selfpowered,
> >  };
> >  
> > -static enum usb_role renesas_usb3_role_switch_get(struct device *dev)
> > +static enum usb_role renesas_usb3_role_switch_get(struct usb_role_switch *sw)
> >  {
> > -	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
> > +	struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
> >  	enum usb_role cur_role;
> >  
> > -	pm_runtime_get_sync(dev);
> > +	pm_runtime_get_sync(usb3_to_dev(usb3));
> >  	cur_role = usb3_is_host(usb3) ? USB_ROLE_HOST : USB_ROLE_DEVICE;
> > -	pm_runtime_put(dev);
> > +	pm_runtime_put(usb3_to_dev(usb3));
> >  
> >  	return cur_role;
> >  }
> > @@ -2372,7 +2372,7 @@ static void handle_ext_role_switch_states(struct device *dev,
> >  {
> >  	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
> >  	struct device *host = usb3->host_dev;
> > -	enum usb_role cur_role = renesas_usb3_role_switch_get(dev);
> > +	enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
> >  
> >  	switch (role) {
> >  	case USB_ROLE_NONE:
> > @@ -2424,7 +2424,7 @@ static void handle_role_switch_states(struct device *dev,
> >  {
> >  	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
> >  	struct device *host = usb3->host_dev;
> > -	enum usb_role cur_role = renesas_usb3_role_switch_get(dev);
> > +	enum usb_role cur_role = renesas_usb3_role_switch_get(usb3->role_sw);
> >  
> >  	if (cur_role == USB_ROLE_HOST && role == USB_ROLE_DEVICE) {
> >  		device_release_driver(host);
> > @@ -2438,19 +2438,19 @@ static void handle_role_switch_states(struct device *dev,
> >  	}
> >  }
> >  
> > -static int renesas_usb3_role_switch_set(struct device *dev,
> > +static int renesas_usb3_role_switch_set(struct usb_role_switch *sw,
> >  					enum usb_role role)
> >  {
> > -	struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
> > +	struct renesas_usb3 *usb3 = usb_role_switch_get_drvdata(sw);
> >  
> > -	pm_runtime_get_sync(dev);
> > +	pm_runtime_get_sync(usb3_to_dev(usb3));
> >  
> >  	if (usb3->role_sw_by_connector)
> > -		handle_ext_role_switch_states(dev, role);
> > +		handle_ext_role_switch_states(usb3_to_dev(usb3), role);
> >  	else
> > -		handle_role_switch_states(dev, role);
> > +		handle_role_switch_states(usb3_to_dev(usb3), role);
> >  
> > -	pm_runtime_put(dev);
> > +	pm_runtime_put(usb3_to_dev(usb3));
> >  
> >  	return 0;
> >  }
> > @@ -2831,6 +2831,8 @@ static int renesas_usb3_probe(struct platform_device *pdev)
> >  		renesas_usb3_role_switch_desc.fwnode = dev_fwnode(&pdev->dev);
> >  	}
> >  
> > +	renesas_usb3_role_switch_desc.driver_data = usb3;
> > +
> >  	INIT_WORK(&usb3->role_work, renesas_usb3_role_work);
> >  	usb3->role_sw = usb_role_switch_register(&pdev->dev,
> >  					&renesas_usb3_role_switch_desc);
> > diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
> > index 634c2c19a176..b9df6369d56d 100644
> > --- a/drivers/usb/gadget/udc/tegra-xudc.c
> > +++ b/drivers/usb/gadget/udc/tegra-xudc.c
> > @@ -676,12 +676,13 @@ static void tegra_xudc_usb_role_sw_work(struct work_struct *work)
> >  
> >  }
> >  
> > -static int tegra_xudc_usb_role_sw_set(struct device *dev, enum usb_role role)
> > +static int tegra_xudc_usb_role_sw_set(struct usb_role_switch *sw,
> > +				      enum usb_role role)
> >  {
> > -	struct tegra_xudc *xudc = dev_get_drvdata(dev);
> > +	struct tegra_xudc *xudc = usb_role_switch_get_drvdata(sw);
> >  	unsigned long flags;
> >  
> > -	dev_dbg(dev, "%s role is %d\n", __func__, role);
> > +	dev_dbg(xudc->dev, "%s role is %d\n", __func__, role);
> >  
> >  	spin_lock_irqsave(&xudc->lock, flags);
> >  
> > @@ -3590,6 +3591,7 @@ static int tegra_xudc_probe(struct platform_device *pdev)
> >  	if (of_property_read_bool(xudc->dev->of_node, "usb-role-switch")) {
> >  		role_sx_desc.set = tegra_xudc_usb_role_sw_set;
> >  		role_sx_desc.fwnode = dev_fwnode(xudc->dev);
> > +		role_sx_desc.driver_data = xudc;
> >  
> >  		xudc->usb_role_sw = usb_role_switch_register(xudc->dev,
> >  							&role_sx_desc);
> > diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c
> > index 08e18448e8b8..04f666e85731 100644
> > --- a/drivers/usb/mtu3/mtu3_dr.c
> > +++ b/drivers/usb/mtu3/mtu3_dr.c
> > @@ -320,9 +320,9 @@ void ssusb_set_force_mode(struct ssusb_mtk *ssusb,
> >  	mtu3_writel(ssusb->ippc_base, SSUSB_U2_CTRL(0), value);
> >  }
> >  
> > -static int ssusb_role_sw_set(struct device *dev, enum usb_role role)
> > +static int ssusb_role_sw_set(struct usb_role_switch *sw, enum usb_role role)
> >  {
> > -	struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
> > +	struct ssusb_mtk *ssusb = usb_role_switch_get_drvdata(sw);
> >  	bool to_host = false;
> >  
> >  	if (role == USB_ROLE_HOST)
> > @@ -334,9 +334,9 @@ static int ssusb_role_sw_set(struct device *dev, enum usb_role role)
> >  	return 0;
> >  }
> >  
> > -static enum usb_role ssusb_role_sw_get(struct device *dev)
> > +static enum usb_role ssusb_role_sw_get(struct usb_role_switch *sw)
> >  {
> > -	struct ssusb_mtk *ssusb = dev_get_drvdata(dev);
> > +	struct ssusb_mtk *ssusb = usb_role_switch_get_drvdata(sw);
> >  	enum usb_role role;
> >  
> >  	role = ssusb->is_host ? USB_ROLE_HOST : USB_ROLE_DEVICE;
> > @@ -356,6 +356,7 @@ static int ssusb_role_sw_register(struct otg_switch_mtk *otg_sx)
> >  	role_sx_desc.set = ssusb_role_sw_set;
> >  	role_sx_desc.get = ssusb_role_sw_get;
> >  	role_sx_desc.fwnode = dev_fwnode(ssusb->dev);
> > +	role_sx_desc.driver_data = ssusb;
> >  	otg_sx->role_sw = usb_role_switch_register(ssusb->dev, &role_sx_desc);
> >  
> >  	return PTR_ERR_OR_ZERO(otg_sx->role_sw);
> > diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c
> > index 6b88c2f5d970..703b98d71180 100644
> > --- a/drivers/usb/musb/mediatek.c
> > +++ b/drivers/usb/musb/mediatek.c
> > @@ -115,9 +115,9 @@ static void mtk_musb_clks_disable(struct mtk_glue *glue)
> >  	clk_disable_unprepare(glue->main);
> >  }
> >  
> > -static int musb_usb_role_sx_set(struct device *dev, enum usb_role role)
> > +static int musb_usb_role_sx_set(struct usb_role_switch *sw, enum usb_role role)
> >  {
> > -	struct mtk_glue *glue = dev_get_drvdata(dev);
> > +	struct mtk_glue *glue = usb_role_switch_get_drvdata(sw);
> >  	struct musb *musb = glue->musb;
> >  	u8 devctl = readb(musb->mregs + MUSB_DEVCTL);
> >  	enum usb_role new_role;
> > @@ -168,9 +168,9 @@ static int musb_usb_role_sx_set(struct device *dev, enum usb_role role)
> >  	return 0;
> >  }
> >  
> > -static enum usb_role musb_usb_role_sx_get(struct device *dev)
> > +static enum usb_role musb_usb_role_sx_get(struct usb_role_switch *sw)
> >  {
> > -	struct mtk_glue *glue = dev_get_drvdata(dev);
> > +	struct mtk_glue *glue = usb_role_switch_get_drvdata(sw);
> >  
> >  	return glue->role;
> >  }
> > @@ -182,6 +182,7 @@ static int mtk_otg_switch_init(struct mtk_glue *glue)
> >  	role_sx_desc.set = musb_usb_role_sx_set;
> >  	role_sx_desc.get = musb_usb_role_sx_get;
> >  	role_sx_desc.fwnode = dev_fwnode(glue->dev);
> > +	role_sx_desc.driver_data = glue;
> >  	glue->role_sw = usb_role_switch_register(glue->dev, &role_sx_desc);
> >  
> >  	return PTR_ERR_OR_ZERO(glue->role_sw);
> > diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
> > index f3132d231599..d5e57d26c31f 100644
> > --- a/drivers/usb/roles/class.c
> > +++ b/drivers/usb/roles/class.c
> > @@ -48,7 +48,7 @@ int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)
> >  
> >  	mutex_lock(&sw->lock);
> >  
> > -	ret = sw->set(sw->dev.parent, role);
> > +	ret = sw->set(sw, role);
> >  	if (!ret)
> >  		sw->role = role;
> >  
> > @@ -75,7 +75,7 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)
> >  	mutex_lock(&sw->lock);
> >  
> >  	if (sw->get)
> > -		role = sw->get(sw->dev.parent);
> > +		role = sw->get(sw);
> >  	else
> >  		role = sw->role;
> >  
> > diff --git a/drivers/usb/roles/intel-xhci-usb-role-switch.c b/drivers/usb/roles/intel-xhci-usb-role-switch.c
> > index 80d6559bbcb2..5c96e929acea 100644
> > --- a/drivers/usb/roles/intel-xhci-usb-role-switch.c
> > +++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c
> > @@ -42,6 +42,7 @@
> >  #define DRV_NAME			"intel_xhci_usb_sw"
> >  
> >  struct intel_xhci_usb_data {
> > +	struct device *dev;
> >  	struct usb_role_switch *role_sw;
> >  	void __iomem *base;
> >  	bool enable_sw_switch;
> > @@ -51,9 +52,10 @@ static const struct software_node intel_xhci_usb_node = {
> >  	"intel-xhci-usb-sw",
> >  };
> >  
> > -static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
> > +static int intel_xhci_usb_set_role(struct usb_role_switch *sw,
> > +				   enum usb_role role)
> >  {
> > -	struct intel_xhci_usb_data *data = dev_get_drvdata(dev);
> > +	struct intel_xhci_usb_data *data = usb_role_switch_get_drvdata(sw);
> >  	unsigned long timeout;
> >  	acpi_status status;
> >  	u32 glk, val;
> > @@ -66,11 +68,11 @@ static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
> >  	 */
> >  	status = acpi_acquire_global_lock(ACPI_WAIT_FOREVER, &glk);
> >  	if (ACPI_FAILURE(status) && status != AE_NOT_CONFIGURED) {
> > -		dev_err(dev, "Error could not acquire lock\n");
> > +		dev_err(data->dev, "Error could not acquire lock\n");
> >  		return -EIO;
> >  	}
> >  
> > -	pm_runtime_get_sync(dev);
> > +	pm_runtime_get_sync(data->dev);
> >  
> >  	/*
> >  	 * Set idpin value as requested.
> > @@ -112,7 +114,7 @@ static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
> >  	do {
> >  		val = readl(data->base + DUAL_ROLE_CFG1);
> >  		if (!!(val & HOST_MODE) == (role == USB_ROLE_HOST)) {
> > -			pm_runtime_put(dev);
> > +			pm_runtime_put(data->dev);
> >  			return 0;
> >  		}
> >  
> > @@ -120,21 +122,21 @@ static int intel_xhci_usb_set_role(struct device *dev, enum usb_role role)
> >  		usleep_range(5000, 10000);
> >  	} while (time_before(jiffies, timeout));
> >  
> > -	pm_runtime_put(dev);
> > +	pm_runtime_put(data->dev);
> >  
> > -	dev_warn(dev, "Timeout waiting for role-switch\n");
> > +	dev_warn(data->dev, "Timeout waiting for role-switch\n");
> >  	return -ETIMEDOUT;
> >  }
> >  
> > -static enum usb_role intel_xhci_usb_get_role(struct device *dev)
> > +static enum usb_role intel_xhci_usb_get_role(struct usb_role_switch *sw)
> >  {
> > -	struct intel_xhci_usb_data *data = dev_get_drvdata(dev);
> > +	struct intel_xhci_usb_data *data = usb_role_switch_get_drvdata(sw);
> >  	enum usb_role role;
> >  	u32 val;
> >  
> > -	pm_runtime_get_sync(dev);
> > +	pm_runtime_get_sync(data->dev);
> >  	val = readl(data->base + DUAL_ROLE_CFG0);
> > -	pm_runtime_put(dev);
> > +	pm_runtime_put(data->dev);
> >  
> >  	if (!(val & SW_IDPIN))
> >  		role = USB_ROLE_HOST;
> > @@ -175,7 +177,9 @@ static int intel_xhci_usb_probe(struct platform_device *pdev)
> >  	sw_desc.get = intel_xhci_usb_get_role,
> >  	sw_desc.allow_userspace_control = true,
> >  	sw_desc.fwnode = software_node_fwnode(&intel_xhci_usb_node);
> > +	sw_desc.driver_data = data;
> >  
> > +	data->dev = dev;
> >  	data->enable_sw_switch = !device_property_read_bool(dev,
> >  						"sw_switch_disable");
> >  
> > diff --git a/include/linux/usb/role.h b/include/linux/usb/role.h
> > index 02dae936cebd..c028ba8029ad 100644
> > --- a/include/linux/usb/role.h
> > +++ b/include/linux/usb/role.h
> > @@ -13,8 +13,9 @@ enum usb_role {
> >  	USB_ROLE_DEVICE,
> >  };
> >  
> > -typedef int (*usb_role_switch_set_t)(struct device *dev, enum usb_role role);
> > -typedef enum usb_role (*usb_role_switch_get_t)(struct device *dev);
> > +typedef int (*usb_role_switch_set_t)(struct usb_role_switch *sw,
> > +				     enum usb_role role);
> > +typedef enum usb_role (*usb_role_switch_get_t)(struct usb_role_switch *sw);
> >  
> >  /**
> >   * struct usb_role_switch_desc - USB Role Switch Descriptor
> > -- 
> > 2.25.0
> 
> thanks,
> 
> -- 
> heikki

-- 

Thanks,
Peter Chen

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