usb: gadget: hsotg: pullup method implementation for s3c-hsotg UDC driver
This commit adds pullup method implementation for UDC s3c-hsotg driver. It is needed for e.g. CCG - Configurable Composite Gadget, when user space configuration change request device disconnection from USB bus (done via calling usb_gadget_connect/disconnect, which calls UDC's pullup method). Implementation of pullup method has caused removal of phy_enable and core_init methods from udc_start to pullup. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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@ -2963,9 +2963,6 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
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goto err;
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}
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s3c_hsotg_phy_enable(hsotg);
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s3c_hsotg_core_init(hsotg);
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hsotg->last_rst = jiffies;
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dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name);
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return 0;
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@ -3028,10 +3025,40 @@ static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget)
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return s3c_hsotg_read_frameno(to_hsotg(gadget));
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}
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/**
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* s3c_hsotg_pullup - connect/disconnect the USB PHY
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* @gadget: The usb gadget state
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* @is_on: Current state of the USB PHY
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*
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* Connect/Disconnect the USB PHY pullup
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*/
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static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
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{
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struct s3c_hsotg *hsotg = to_hsotg(gadget);
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unsigned long flags = 0;
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dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on);
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spin_lock_irqsave(&hsotg->lock, flags);
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if (is_on) {
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s3c_hsotg_phy_enable(hsotg);
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s3c_hsotg_core_init(hsotg);
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} else {
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s3c_hsotg_disconnect(hsotg);
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s3c_hsotg_phy_disable(hsotg);
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}
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hsotg->gadget.speed = USB_SPEED_UNKNOWN;
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spin_unlock_irqrestore(&hsotg->lock, flags);
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return 0;
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}
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static struct usb_gadget_ops s3c_hsotg_gadget_ops = {
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.get_frame = s3c_hsotg_gadget_getframe,
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.udc_start = s3c_hsotg_udc_start,
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.udc_stop = s3c_hsotg_udc_stop,
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.pullup = s3c_hsotg_pullup,
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};
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/**
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