linux-kernel - [PATCH v3 6/6] usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/complete

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Message-ID: <1400731298-18442-7-git-send-email-george.cherian@ti.com>
Date:	Thu, 22 May 2014 09:31:38 +0530
From:	George Cherian <george.cherian@...com>
To:	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-usb@...r.kernel.org>
CC:	<gregkh@...uxfoundation.org>, <balbi@...com>,
	George Cherian <george.cherian@...com>
Subject: [PATCH v3 6/6] usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/complete

The dwc3 wrapper driver should not be fiddling with the core interrupts.
Disabling the core interrupts in prepare stops xhci from proper operation.
So remove disable/enable of core interrupts from prepare/complete.

Signed-off-by: George Cherian <george.cherian@...com>
---
 drivers/usb/dwc3/dwc3-omap.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index b729cdb..116f71c 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -597,7 +597,7 @@ static int dwc3_omap_prepare(struct device *dev)
 {
 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
 
-	dwc3_omap_disable_irqs(omap);
+	dwc3_omap_write_irqmisc_set(omap, 0x00);
 
 	return 0;
 }
@@ -605,8 +605,19 @@ static int dwc3_omap_prepare(struct device *dev)
 static void dwc3_omap_complete(struct device *dev)
 {
 	struct dwc3_omap	*omap = dev_get_drvdata(dev);
+	u32			reg;
 
-	dwc3_omap_enable_irqs(omap);
+	reg = (USBOTGSS_IRQMISC_OEVT |
+			USBOTGSS_IRQMISC_DRVVBUS_RISE |
+			USBOTGSS_IRQMISC_CHRGVBUS_RISE |
+			USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
+			USBOTGSS_IRQMISC_IDPULLUP_RISE |
+			USBOTGSS_IRQMISC_DRVVBUS_FALL |
+			USBOTGSS_IRQMISC_CHRGVBUS_FALL |
+			USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
+			USBOTGSS_IRQMISC_IDPULLUP_FALL);
+
+	dwc3_omap_write_irqmisc_set(omap, reg);
 }
 
 static int dwc3_omap_suspend(struct device *dev)
-- 
1.8.3.1

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