linux-kernel - [PATCH v4 6/6] usb: musb: omap2430: use the new generic PHY framework

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Message-ID: <1364449408-9510-7-git-send-email-kishon@ti.com>
Date:	Thu, 28 Mar 2013 11:13:28 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	<balbi@...com>, <gregkh@...uxfoundation.org>, <arnd@...db.de>,
	<akpm@...ux-foundation.org>, <rob@...dley.net>
CC:	<sylvester.nawrocki@...il.com>, <swarren@...dotorg.org>,
	<davem@...emloft.net>, <cesarb@...arb.net>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <tony@...mide.com>,
	<grant.likely@...retlab.ca>, <rob.herring@...xeda.com>,
	<b-cousson@...com>, <linux@....linux.org.uk>,
	<eballetbo@...il.com>, <javier@...hile0.org>, <kishon@...com>,
	<mchehab@...hat.com>, <santosh.shilimkar@...com>,
	<broonie@...nsource.wolfsonmicro.com>, <swarren@...dia.com>,
	<linux-doc@...r.kernel.org>, <devicetree-discuss@...ts.ozlabs.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v4 6/6] usb: musb: omap2430: use the new generic PHY framework

Use the generic PHY framework API to get the PHY. The usb_phy_set_suspend
and usb_phy_set_resume is replaced with phy_suspend and phy_resume to
align with the new PHY framework.

musb->xceiv can't be removed as of now because musb core uses xceiv.state and
xceiv.otg. Once there is a separate state machine to handle otg, these can be
moved out of xceiv and then we can start using the generic PHY framework.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/usb/musb/musb_core.h |    2 ++
 drivers/usb/musb/omap2430.c  |   22 ++++++++++++++++------
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 7fb4819..78251fd 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -46,6 +46,7 @@
 #include <linux/usb.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/musb.h>
+#include <linux/phy/phy.h>
 
 struct musb;
 struct musb_hw_ep;
@@ -357,6 +358,7 @@ struct musb {
 	u16			int_tx;
 
 	struct usb_phy		*xceiv;
+	struct phy		*phy;
 
 	int nIrq;
 	unsigned		irq_wake:1;
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 1a42a45..55f071d 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -349,14 +349,24 @@ static int omap2430_musb_init(struct musb *musb)
 	 * up through ULPI.  TWL4030-family PMICs include one,
 	 * which needs a driver, drivers aren't always needed.
 	 */
-	if (dev->parent->of_node)
+	if (dev->parent->of_node) {
+		musb->phy = devm_of_phy_get_byname(dev->parent, "usb2-phy");
+
+		/* We can't totally remove musb->xceiv as of now because
+		 * musb core uses xceiv.state and xceiv.otg. Once we have
+		 * a separate state machine to handle otg, these can be moved
+		 * out of xceiv and then we can start using the generic PHY
+		 * framework
+		 */
 		musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
 		    "usb-phy", 0);
-	else
+	} else {
 		musb->xceiv = devm_usb_get_phy_dev(dev, 0);
+		musb->phy = devm_phy_get(dev, 0);
+	}
 
-	if (IS_ERR_OR_NULL(musb->xceiv)) {
-		pr_err("HS USB OTG: no transceiver configured\n");
+	if (IS_ERR_OR_NULL(musb->xceiv) || IS_ERR_OR_NULL(musb->phy)) {
+		dev_err(dev, "no transceiver configured\n");
 		return -EPROBE_DEFER;
 	}
 
@@ -612,7 +622,7 @@ static int omap2430_runtime_suspend(struct device *dev)
 				OTG_INTERFSEL);
 
 		omap2430_low_level_exit(musb);
-		usb_phy_set_suspend(musb->xceiv, 1);
+		phy_suspend(musb->phy);
 	}
 
 	return 0;
@@ -628,7 +638,7 @@ static int omap2430_runtime_resume(struct device *dev)
 		musb_writel(musb->mregs, OTG_INTERFSEL,
 				musb->context.otg_interfsel);
 
-		usb_phy_set_suspend(musb->xceiv, 0);
+		phy_resume(musb->phy);
 	}
 
 	return 0;
-- 
1.7.10.4

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