commit c46fdc300b7112038b9d1128ac09ee2b1b139f32
author Pavankumar Kondeti <pkondeti@codeaurora.org> Fri Dec 21 18:07:40 2012 +0530
committer Pavankumar Kondeti <pkondeti@codeaurora.org> Fri Jan 18 11:37:39 2013 +0530
tree 3c50a776f44319295a0516981ad4523d73a0403e
parent e79aa681adbe0784809bc5531beecde9f8953b0b

USB: ci13xxx_udc: Add module param to enable streaming mode

The streaming mode is disabled by default for ci13xxx_msm.  Add
a module param to enable streaming.  This module param overrides
flag.

This allows user space to enable streaming mode for selected USB
compositions.

CRs-Fixed: 429212
Change-Id: I9ee76841d7de9797452090e29d00d09385024ae5
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>

drivers/usb/gadget/ci13xxx_udc.c

diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 8c04863..9f1873d 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -69,6 +69,9 @@
 
 #include "ci13xxx_udc.h"
 
+/* Turns on streaming. overrides CI13XXX_DISABLE_STREAMING */
+static unsigned int streaming;
+module_param(streaming, uint, S_IRUGO | S_IWUSR);
 
 /******************************************************************************
  * DEFINE
@@ -332,9 +335,6 @@
 		udc->udc_driver->notify_event(udc,
 			CI13XXX_CONTROLLER_RESET_EVENT);
 
-	if (udc->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
-		hw_cwrite(CAP_USBMODE, USBMODE_SDIS, USBMODE_SDIS);
-
 	/* USBMODE should be configured step by step */
 	hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
 	hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE);
@@ -369,7 +369,15 @@
  */
 static int hw_device_state(u32 dma)
 {
+	struct ci13xxx *udc = _udc;
+
 	if (dma) {
+		if (streaming || !(udc->udc_driver->flags &
+				CI13XXX_DISABLE_STREAMING))
+			hw_cwrite(CAP_USBMODE, USBMODE_SDIS, 0);
+		else
+			hw_cwrite(CAP_USBMODE, USBMODE_SDIS, USBMODE_SDIS);
+
 		hw_cwrite(CAP_ENDPTLISTADDR, ~0, dma);
 		/* interrupt, error, port change, reset, sleep/suspend */
 		hw_cwrite(CAP_USBINTR, ~0,