From: Manish Narani <manish.narani@xilinx.com>
To: <mathias.nyman@intel.com>, <gregkh@linuxfoundation.org>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <anuragku@xilinx.com>, <punnaia@xilinx.com>, <anirudh@xilinx.com>,
<mnarani@xilinx.com>
Subject: [RFC PATCH] usb: host: xhci: plat: add support for otg_set_host() call
Date: Thu, 15 Dec 2016 00:25:08 +0530 [thread overview]
Message-ID: <1481741708-7946-1-git-send-email-mnarani@xilinx.com> (raw)
This patch will add support for OTG host initialization. This will
help OTG drivers to populate their host subsystem.
Signed-off-by: Manish Narani <mnarani@xilinx.com>
---
drivers/usb/host/xhci-plat.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index ddfab30..b4cadbd 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -20,6 +20,10 @@
#include <linux/slab.h>
#include <linux/acpi.h>
+#ifdef CONFIG_USB_OTG
+#include <linux/usb/otg.h>
+#endif
+
#include "xhci.h"
#include "xhci-plat.h"
#include "xhci-mvebu.h"
@@ -255,6 +259,24 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto dealloc_usb2_hcd;
+#ifdef CONFIG_USB_OTG
+ hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB3);
+ if (!IS_ERR_OR_NULL(hcd->usb_phy) && hcd->usb_phy->otg) {
+ dev_dbg(&pdev->dev, "%s otg support available\n", __func__);
+ ret = otg_set_host(hcd->usb_phy->otg, &hcd->self);
+ if (ret) {
+ dev_err(&pdev->dev, "%s otg_set_host failed\n",
+ __func__);
+ usb_put_phy(hcd->usb_phy);
+ hcd->usb_phy = NULL;
+ goto dealloc_usb2_hcd;
+ }
+ } else {
+ usb_put_phy(hcd->usb_phy);
+ hcd->usb_phy = NULL;
+ }
+#endif
+
return 0;
@@ -283,6 +305,19 @@ static int xhci_plat_remove(struct platform_device *dev)
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct clk *clk = xhci->clk;
+#ifdef CONFIG_USB_OTG
+ if (hcd->usb_phy) {
+ if (!IS_ERR(hcd->usb_phy)) {
+ if (hcd->usb_phy->otg)
+ otg_set_host(hcd->usb_phy->otg, NULL);
+ usb_put_phy(hcd->usb_phy);
+ }
+ hcd->usb_phy = NULL;
+ if (xhci->shared_hcd)
+ xhci->shared_hcd->usb_phy = NULL;
+ }
+#endif
+
usb_remove_hcd(xhci->shared_hcd);
usb_phy_shutdown(hcd->usb_phy);
--
1.7.1
next reply other threads:[~2016-12-14 20:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-14 18:55 Manish Narani [this message]
2016-12-14 20:58 ` Greg KH
2016-12-15 12:10 ` Manish Narani
2016-12-15 7:53 Manish Narani
2017-01-02 6:30 ` Manish Narani
2017-01-02 9:22 ` gregkh
2017-01-02 9:35 ` Manish Narani
2017-01-02 9:59 ` gregkh
2017-01-04 13:22 [RFC PATCH] arch: arm64: dts: add USB OTG interrupts support in ZynqMP device tree Manish Narani
2017-01-04 13:23 ` [RFC PATCH] usb: host: xhci: plat: add support for otg_set_host() call Manish Narani
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