linux-kernel - [PATCH] drivers/usb : Port USB EHCI host driver for LS102xA

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Date:	Fri, 18 Dec 2015 14:16:29 +0530
From:	Sriram Dash <sriram.dash@...escale.com>
To:	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
CC:	<stern@...land.harvard.edu>, <gregkh@...uxfoundation.org>,
	<ramneek.mehresh@...escale.com>, <rajesh.bhagat@...escale.com>,
	Sriram Dash <sriram.dash@...escale.com>
Subject: [PATCH] drivers/usb : Port USB EHCI host driver for LS102xA

Change Power architecture specific APIs such as in_be32/out_be32
for registers read/write. Instead using ioread/writebe32 which are
defined for power as well as arm architecture

Signed-off-by: Nikhil Badola <nikhil.badola@...escale.com>
Signed-off-by: Sriram Dash <sriram.dash@...escale.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@...escale.com>
---
 drivers/usb/host/ehci-fsl.c | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 3b6eb21..9f5ffb6 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -35,6 +35,7 @@
 #include <linux/usb/otg.h>
 #include <linux/platform_device.h>
 #include <linux/fsl_devices.h>
+#include <linux/of_platform.h>
 
 #include "ehci.h"
 #include "ehci-fsl.h"
@@ -241,7 +242,8 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 	 * to portsc
 	 */
 	if (pdata->check_phy_clk_valid) {
-		if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) {
+		if (!(ioread32be(non_ehci + FSL_SOC_USB_CTRL) &
+		    PHY_CLK_VALID)) {
 			dev_warn(hcd->self.controller,
 				 "USB PHY clock invalid\n");
 			return -EINVAL;
@@ -273,9 +275,11 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 
 		/* Setup Snooping for all the 4GB space */
 		/* SNOOP1 starts from 0x0, size 2G */
-		out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
+		iowrite32be(0x0 | SNOOP_SIZE_2GB,
+			    non_ehci + FSL_SOC_USB_SNOOP1);
 		/* SNOOP2 starts from 0x80000000, size 2G */
-		out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
+		iowrite32be(0x80000000 | SNOOP_SIZE_2GB,
+			    non_ehci + FSL_SOC_USB_SNOOP2);
 	}
 
 	/* Deal with USB erratum A-005275 */
@@ -309,13 +313,13 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 
 	if (pdata->have_sysif_regs) {
 #ifdef CONFIG_FSL_SOC_BOOKE
-		out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
-		out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
+		iowrite32be(0x00000008, non_ehci + FSL_SOC_USB_PRICTRL);
+		iowrite32be(0x00000080, non_ehci + FSL_SOC_USB_AGECNTTHRSH);
 #else
-		out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
-		out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
+		iowrite32be(0x0000000c, non_ehci + FSL_SOC_USB_PRICTRL);
+		iowrite32be(0x00000040, non_ehci + FSL_SOC_USB_AGECNTTHRSH);
 #endif
-		out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
+		iowrite32be(0x00000001, non_ehci + FSL_SOC_USB_SICTRL);
 	}
 
 	return 0;
@@ -554,7 +558,7 @@ static int ehci_fsl_drv_suspend(struct device *dev)
 	if (!fsl_deep_sleep())
 		return 0;
 
-	ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
+	ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL);
 	return 0;
 }
 
@@ -577,7 +581,7 @@ static int ehci_fsl_drv_resume(struct device *dev)
 	usb_root_hub_lost_power(hcd->self.root_hub);
 
 	/* Restore USB PHY settings and enable the controller. */
-	out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
+	iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL);
 
 	ehci_reset(ehci);
 	ehci_fsl_reinit(ehci);
-- 
2.1.0

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