linux-kernel - [PATCH v10 3/5] usb: xhci: Add support for Renesas controller with memory

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Message-Id: <20200424101410.2364219-4-vkoul@kernel.org>
Date:   Fri, 24 Apr 2020 15:44:08 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Christian Lamparter <chunkeey@...glemail.com>,
        John Stultz <john.stultz@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Andreas Böhler <dev@...ehler.at>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v10 3/5] usb: xhci: Add support for Renesas controller with memory

Some rensas controller like uPD720201 and uPD720202 need firmware to be
loaded. Add these devices in table and invoke renesas firmware loader
functions to check and load the firmware into device memory when
required.

Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/usb/host/xhci-pci.c | 28 ++++++++++++++++++++++++++++
 drivers/usb/host/xhci.h     |  1 +
 2 files changed, 29 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index b6c2f5c530e3..f26cf072836d 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -15,6 +15,7 @@
 
 #include "xhci.h"
 #include "xhci-trace.h"
+#include "xhci-pci.h"
 
 #define SSIC_PORT_NUM		2
 #define SSIC_PORT_CFG2		0x880c
@@ -319,6 +320,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
 	return xhci_pci_reinit(xhci, pdev);
 }
 
+static bool renesas_device;
+
 /*
  * We need to register our own PCI probe function (instead of the USB core's
  * function) in order to create a second roothub under xHCI.
@@ -328,6 +331,16 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	int retval;
 	struct xhci_hcd *xhci;
 	struct usb_hcd *hcd;
+	struct xhci_driver_data *driver_data;
+
+	renesas_device = false;
+	driver_data = (struct xhci_driver_data *)id->driver_data;
+	if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) {
+		retval = renesas_xhci_check_request_fw(dev, id);
+		if (retval)
+			return retval;
+		renesas_device = true;
+	}
 
 	/* Prevent runtime suspending between USB-2 and USB-3 initialization */
 	pm_runtime_get_noresume(&dev->dev);
@@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev)
 {
 	struct xhci_hcd *xhci;
 
+	if (renesas_device)
+		renesas_xhci_pci_exit(dev);
+
 	xhci = hcd_to_xhci(pci_get_drvdata(dev));
 	xhci->xhc_state |= XHCI_STATE_REMOVING;
 
@@ -540,14 +556,26 @@ static void xhci_pci_shutdown(struct usb_hcd *hcd)
 
 /*-------------------------------------------------------------------------*/
 
+static const struct xhci_driver_data reneses_data = {
+	.quirks  = XHCI_RENESAS_FW_QUIRK,
+	.firmware = "renesas_usb_fw.mem",
+};
+
 /* PCI driver selection metadata; PCI hotplugging uses this */
 static const struct pci_device_id pci_ids[] = {
+	{ PCI_DEVICE(0x1912, 0x0014),
+		.driver_data =  (unsigned long)&reneses_data,
+	},
+	{ PCI_DEVICE(0x1912, 0x0015),
+		.driver_data =  (unsigned long)&reneses_data,
+	},
 	/* handle any USB 3.0 xHCI controller */
 	{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
 	},
 	{ /* end: all zeroes */ }
 };
 MODULE_DEVICE_TABLE(pci, pci_ids);
+MODULE_FIRMWARE("renesas_usb_fw.mem");
 
 /* pci driver glue; this is a "new style" PCI driver module */
 static struct pci_driver xhci_pci_driver = {
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 3289bb516201..4047363c7423 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1873,6 +1873,7 @@ struct xhci_hcd {
 #define XHCI_DEFAULT_PM_RUNTIME_ALLOW	BIT_ULL(33)
 #define XHCI_RESET_PLL_ON_DISCONNECT	BIT_ULL(34)
 #define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)
+#define XHCI_RENESAS_FW_QUIRK	BIT_ULL(36)
 
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
-- 
2.25.1