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usb: gadget: hsotg: pullup method implementation for s3c-hsotg UDC driver

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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>
This commit is contained in:
Lukasz Majewski 2012-06-22 09:29:56 +02:00 committed by Felipe Balbi
parent d6e16a8957
commit a188b6897e
1 changed files with 30 additions and 3 deletions
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33
drivers/usb/gadget/s3c-hsotg.c
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@ -2963,9 +2963,6 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
goto err;
}
s3c_hsotg_phy_enable(hsotg);
s3c_hsotg_core_init(hsotg);
hsotg->last_rst = jiffies;
dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name);
return 0;
@ -3028,10 +3025,40 @@ static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget)
return s3c_hsotg_read_frameno(to_hsotg(gadget));
}
/**
* s3c_hsotg_pullup - connect/disconnect the USB PHY
* @gadget: The usb gadget state
* @is_on: Current state of the USB PHY
*
* Connect/Disconnect the USB PHY pullup
*/
static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
{
struct s3c_hsotg *hsotg = to_hsotg(gadget);
unsigned long flags = 0;
dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on);
spin_lock_irqsave(&hsotg->lock, flags);
if (is_on) {
s3c_hsotg_phy_enable(hsotg);
s3c_hsotg_core_init(hsotg);
} else {
s3c_hsotg_disconnect(hsotg);
s3c_hsotg_phy_disable(hsotg);
}
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
static struct usb_gadget_ops s3c_hsotg_gadget_ops = {
.get_frame = s3c_hsotg_gadget_getframe,
.udc_start = s3c_hsotg_udc_start,
.udc_stop = s3c_hsotg_udc_stop,
.pullup = s3c_hsotg_pullup,
};
/**