linux-kernel - [PATCH V3 3/6] usb: xhci: xhci-plat: Add support for Broadcom STB SoC's

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Message-Id: <1541453493-34981-4-git-send-email-alcooperx@gmail.com>
Date:   Mon,  5 Nov 2018 16:31:30 -0500
From:   Al Cooper <alcooperx@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Al Cooper <alcooperx@...il.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Alban Bedel <albeu@...e.fr>, Alex Elder <elder@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Avi Fishman <avifishman70@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, Dmitry Osipenko <digetx@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Hans de Goede <hdegoede@...hat.com>,
        James Hogan <jhogan@...nel.org>,
        Jianguo Sun <sunjianguo1@...wei.com>,
        Johan Hovold <johan@...nel.org>,
        Kees Cook <keescook@...omium.org>, linux-usb@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Mark Rutland <mark.rutland@....com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Rishabh Bhatnagar <rishabhb@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH V3 3/6] usb: xhci: xhci-plat: Add support for Broadcom STB SoC's

Add support for Broadcom STB SoC's to the xhci platform driver

Signed-off-by: Al Cooper <alcooperx@...il.com>
---
 drivers/usb/host/xhci-brcm.c | 17 +++++++++++++++++
 drivers/usb/host/xhci-brcm.h | 16 ++++++++++++++++
 drivers/usb/host/xhci-plat.c |  8 ++++++++
 3 files changed, 41 insertions(+)
 create mode 100644 drivers/usb/host/xhci-brcm.c
 create mode 100644 drivers/usb/host/xhci-brcm.h

diff --git a/drivers/usb/host/xhci-brcm.c b/drivers/usb/host/xhci-brcm.c
new file mode 100644
index 000000000000..a7220126f6af
--- /dev/null
+++ b/drivers/usb/host/xhci-brcm.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2018, Broadcom */
+
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "xhci.h"
+
+int xhci_plat_brcm_init_quirk(struct usb_hcd *hcd)
+{
+	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+
+	xhci->quirks |= XHCI_RESET_ON_RESUME;
+	hcd->suspend_without_phy_exit = 1;
+	return 0;
+}
+
diff --git a/drivers/usb/host/xhci-brcm.h b/drivers/usb/host/xhci-brcm.h
new file mode 100644
index 000000000000..e64800fae4d5
--- /dev/null
+++ b/drivers/usb/host/xhci-brcm.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018, Broadcom */
+
+#ifndef _XHCI_BRCM_H
+#define _XHCI_BRCM_H
+
+#if IS_ENABLED(CONFIG_USB_XHCI_BRCM)
+int xhci_plat_brcm_init_quirk(struct usb_hcd *hcd);
+#else
+static inline int xhci_plat_brcm_init_quirk(struct usb_hcd *hcd)
+{
+	return 0;
+}
+#endif
+#endif /* _XHCI_BRCM_H */
+
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 32b5574ad5c5..5372d4040be6 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -24,6 +24,7 @@
 #include "xhci-plat.h"
 #include "xhci-mvebu.h"
 #include "xhci-rcar.h"
+#include "xhci-brcm.h"
 
 static struct hc_driver __read_mostly xhci_plat_hc_driver;
 
@@ -112,6 +113,10 @@ static int xhci_plat_start(struct usb_hcd *hcd)
 	.resume_quirk = xhci_rcar_resume_quirk,
 };
 
+static const struct xhci_plat_priv xhci_plat_brcm = {
+	.init_quirk = xhci_plat_brcm_init_quirk
+};
+
 static const struct of_device_id usb_xhci_of_match[] = {
 	{
 		.compatible = "generic-xhci",
@@ -144,6 +149,9 @@ static int xhci_plat_start(struct usb_hcd *hcd)
 	}, {
 		.compatible = "renesas,rcar-gen3-xhci",
 		.data = &xhci_plat_renesas_rcar_gen3,
+	}, {
+		.compatible = "brcm,bcm7445-xhci",
+		.data = &xhci_plat_brcm,
 	},
 	{},
 };
-- 
1.9.0.138.g2de3478