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| author | Lukasz Majewski <l.majewski@samsung.com> | 2012-06-22 09:29:56 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-06-22 12:25:02 +0200 |
| commit | a188b6897e3dca82dd6f5beceabf1fc62b9786d9 (patch) | |
| tree | a193fdafdae4b81336e06d6b38b82e39842a925e | |
| parent | usb: gadget: mass_storage: fail fsg_store_file() early if colud not open file (diff) | |
| download | linux-a188b6897e3dca82dd6f5beceabf1fc62b9786d9.tar.xz linux-a188b6897e3dca82dd6f5beceabf1fc62b9786d9.zip | |
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>
| -rw-r--r-- | drivers/usb/gadget/s3c-hsotg.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index d208c46341d7..75a28e6d3761 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -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, }; /** |