From 4d19c233a01598a28fdc528ebaeb7a1b4bb6884f Mon Sep 17 00:00:00 2001
From: Zhanyong Wang <zhanyong.wang@mediatek.com>
Date: Mon, 15 Aug 2022 12:40:22 +0800
Subject: [PATCH 2/3] xHCI: MT79xx USB 2.0 USBIF compliance toolkit

MT79xx USB 2.0 USBIF compliance toolkit

Signed-off-by: Zhanyong Wang <zhanyong.wang@mediatek.com>
---
 drivers/usb/host/Kconfig    |  9 +++++++++
 drivers/usb/host/Makefile   | 10 ++++++++++
 drivers/usb/host/xhci-mtk.c |  5 ++++-
 drivers/usb/host/xhci-mtk.h |  7 +++++++
 drivers/usb/host/xhci.c     |  2 +-
 drivers/usb/host/xhci.h     |  1 +
 6 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 79b2e79dddd0..12b1bf9aa043 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -69,6 +69,15 @@ config USB_XHCI_MTK
 	  found in MediaTek SoCs.
 	  If unsure, say N.
 
+config USB_XHCI_MTK_DEBUGFS
+	tristate "xHCI DEBUGFS support for Mediatek MT65xx"
+	depends on USB_XHCI_MTK && DEBUG_FS
+       default y
+	---help---
+	  Say 'Y' to enable the debugfs support for the xHCI host controller
+	  found in Mediatek MT65xx SoCs.
+	  If don't need, say N.
+
 config USB_XHCI_MVEBU
 	tristate "xHCI support for Marvell Armada 375/38x/37xx"
 	select USB_XHCI_PLATFORM
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index b191361257cc..f064f836db2b 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -21,6 +21,16 @@ endif
 
 ifneq ($(CONFIG_USB_XHCI_MTK), )
 	xhci-hcd-y += xhci-mtk-sch.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-test.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-unusual.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-intr-en.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-vrt-vref.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-term-vref.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-hstx-srctrl.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-discth.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-chgdt-en.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-reg.o
+	xhci-hcd-$(CONFIG_USB_XHCI_MTK_DEBUGFS) += xhci-mtk-preemphasic.o
 endif
 
 xhci-plat-hcd-y := xhci-plat.o
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 104296fdd03e..d4345657945d 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -19,9 +19,10 @@
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
-
+#include <linux/usb/of.h>
 #include "xhci.h"
 #include "xhci-mtk.h"
+#include "xhci-mtk-test.h"
 
 /* ip_pw_ctrl0 register */
 #define CTRL0_IP_SW_RST	BIT(0)
@@ -581,6 +582,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)
 	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
 	if (ret)
 		goto dealloc_usb2_hcd;
+	hqa_create_attr(dev);
 
 	return 0;
 
@@ -615,6 +617,7 @@ static int xhci_mtk_remove(struct platform_device *dev)
 	struct usb_hcd	*hcd = mtk->hcd;
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	struct usb_hcd  *shared_hcd = xhci->shared_hcd;
+	hqa_remove_attr(&dev->dev);
 
 	pm_runtime_put_noidle(&dev->dev);
 	pm_runtime_disable(&dev->dev);
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
index 985e7a19f6f6..1540c66799d7 100644
--- a/drivers/usb/host/xhci-mtk.h
+++ b/drivers/usb/host/xhci-mtk.h
@@ -158,6 +158,13 @@ struct xhci_hcd_mtk {
 	struct regmap *uwk;
 	u32 uwk_reg_base;
 	u32 uwk_vers;
+
+#ifdef CONFIG_USB_XHCI_MTK_DEBUGFS
+	int     test_mode;
+	size_t  hqa_size;
+	u32     hqa_pos;
+	char   *hqa_buf;
+#endif
 };
 
 static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 9fe35bb67731..4f62eddce6ab 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -711,7 +711,7 @@ EXPORT_SYMBOL_GPL(xhci_run);
  * Disable device contexts, disable IRQs, and quiesce the HC.
  * Reset the HC, finish any completed transactions, and cleanup memory.
  */
-static void xhci_stop(struct usb_hcd *hcd)
+void xhci_stop(struct usb_hcd *hcd)
 {
 	u32 temp;
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index a9031f494984..b54be4833ef7 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2070,6 +2070,7 @@ int xhci_halt(struct xhci_hcd *xhci);
 int xhci_start(struct xhci_hcd *xhci);
 int xhci_reset(struct xhci_hcd *xhci, u64 timeout_us);
 int xhci_run(struct usb_hcd *hcd);
+void xhci_stop(struct usb_hcd *hcd);
 int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
 void xhci_shutdown(struct usb_hcd *hcd);
 void xhci_init_driver(struct hc_driver *drv,
-- 
2.18.0