USB: omap_udc: sync with OMAP tree
Sync up USB parts of the omap_udc support in mainline with the OMAP tree.
This patch addresses some OMAP2 differences ... there's another, with
respect to the double-buffering issue with PIO-IN in omap_ep_setup()
(which is now out of sync with the comments), but it's not clear right
now how to address that.
From: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index bb54cca..34e9e39 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -2313,6 +2313,13 @@
tmp = omap_readl(OTG_REV);
if (cpu_is_omap24xx()) {
+ /*
+ * REVISIT: Not clear how this works on OMAP2. trans
+ * is ANDed to produce bits 7 and 8, which might make
+ * sense for USB_TRANSCEIVER_CTRL on OMAP1,
+ * but with CONTROL_DEVCONF, these bits have something to
+ * do with the frame adjustment counter and McBSP2.
+ */
ctrl_name = "control_devconf";
trans = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
} else {