linux-kernel - [PATCH 6/9] usb: musb: core: properly setup the HW before registering it to the USB core

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Message-Id: <1405675890-8802-7-git-send-email-LW@KARO-electronics.de>
Date:	Fri, 18 Jul 2014 11:31:27 +0200
From:	Lothar Waßmann <LW@...O-electronics.de>
To:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	George Cherian <george.cherian@...com>,
	<linux-arm-kernel@...ts.infradead.org>,
	Roger Quadros <rogerq@...com>
Cc:	Lothar Waßmann <LW@...O-electronics.de>
Subject: [PATCH 6/9] usb: musb: core: properly setup the HW before registering it to the USB core

Without this patch overriding the USBOTG_ID pin by setting the iddig
bit in the USB_MODE register doesn't work because it happens too late
to be recognized correctly.

Signed-off-by: Lothar Waßmann <LW@...O-electronics.de>
---
 drivers/usb/musb/musb_core.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f867b44..bbf2aefb 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1988,18 +1988,21 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 
 	switch (musb->port_mode) {
 	case MUSB_PORT_MODE_HOST:
-		status = musb_host_setup(musb, plat->power);
+		status = musb_platform_set_mode(musb, MUSB_HOST);
 		if (status < 0)
 			goto fail3;
-		status = musb_platform_set_mode(musb, MUSB_HOST);
+		status = musb_host_setup(musb, plat->power);
 		break;
 	case MUSB_PORT_MODE_GADGET:
-		status = musb_gadget_setup(musb);
+		status = musb_platform_set_mode(musb, MUSB_PERIPHERAL);
 		if (status < 0)
 			goto fail3;
-		status = musb_platform_set_mode(musb, MUSB_PERIPHERAL);
+		status = musb_gadget_setup(musb);
 		break;
 	case MUSB_PORT_MODE_DUAL_ROLE:
+		status = musb_platform_set_mode(musb, MUSB_OTG);
+		if (status < 0)
+			goto fail3;
 		status = musb_host_setup(musb, plat->power);
 		if (status < 0)
 			goto fail3;
@@ -2008,7 +2011,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 			musb_host_cleanup(musb);
 			goto fail3;
 		}
-		status = musb_platform_set_mode(musb, MUSB_OTG);
 		break;
 	default:
 		dev_err(dev, "unsupported port mode %d\n", musb->port_mode);
-- 
1.7.10.4

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