linux-kernel - [PATCH] usb: dwc3: Set DWC3 context's mode based on selected mode.

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Date:	Sat, 02 Mar 2013 18:55:24 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	linux-usb@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, gregkh@...uxfoundation.org,
	balbi@...com
Subject: [PATCH] usb: dwc3: Set DWC3 context's mode based on selected mode.

Now that machines may select the mode of working of DWC3 (HOST only,
GADGET only or DUAL_ROLE), lets set DWC3 mode based on that
rather than fixing it to whatever DWC3 hardware says.
This way we can skip initializing Gadget/Host in case
we are using Host-only/Gadget-only mode respectively.

Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
---

Changes from RFC patch "usb: dwc3: Set GCTL.PrtCapDir based on selected mode"
 - Setting the mode in dwc3 context structure based on
   selected mode in machine, rather than programming PrtCapDir

 drivers/usb/dwc3/core.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 79f335f..be0672f 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -478,7 +478,12 @@ static int dwc3_probe(struct platform_device *pdev)
 		goto err1;
 	}
 
-	mode = DWC3_MODE(dwc->hwparams.hwparams0);
+	if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
+		mode = DWC3_MODE_HOST;
+	else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
+		mode = DWC3_MODE_DEVICE;
+	else
+		mode = DWC3_MODE_DRD;
 
 	switch (mode) {
 	case DWC3_MODE_DEVICE:
-- 
1.7.6.5

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