USB: pxa27x_udc: factor pullup code to prepare otg transceiver

Prepare pxa27x_udc to handle usb D+ pullup properly : it
should connect the pullup resistor and disconnect it only
if no external transceiver is handling it.

[ dbrownell@users.sourceforge.net: kerneldoc and gpio fixes ]

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h
index 1d1b7936ee11..6f5234dff8a5 100644
--- a/drivers/usb/gadget/pxa27x_udc.h
+++ b/drivers/usb/gadget/pxa27x_udc.h
@@ -425,6 +425,9 @@ struct udc_stats {
  * @stats: statistics on udc usage
  * @udc_usb_ep: array of usb endpoints offered by the gadget
  * @pxa_ep: array of pxa available endpoints
+ * @enabled: UDC was enabled by a previous udc_enable()
+ * @pullup_on: if pullup resistor connected to D+ pin
+ * @pullup_resume: if pullup resistor should be connected to D+ pin on resume
  * @config: UDC active configuration
  * @last_interface: UDC interface of the last SET_INTERFACE host request
  * @last_alternate: UDC altsetting of the last SET_INTERFACE host request
@@ -450,6 +453,9 @@ struct pxa_udc {
         struct udc_usb_ep                       udc_usb_ep[NR_USB_ENDPOINTS];
         struct pxa_ep                           pxa_ep[NR_PXA_ENDPOINTS];
 
+        unsigned                                enabled:1;
+        unsigned                                pullup_on:1;
+        unsigned                                pullup_resume:1;
         unsigned                                config:2;
         unsigned                                last_interface:3;
         unsigned                                last_alternate:3;