2020-04-29 21:12:02 +00:00
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From 2395c0a7b3d22fa7788a6131ff0b6c6035c29368 Mon Sep 17 00:00:00 2001
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2020-04-23 20:47:21 +00:00
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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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Date: Tue, 10 Mar 2020 13:52:42 +0100
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Subject: [PATCH] USB: pci-quirks: Add Raspberry Pi 4 quirk
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On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
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loaded directly from an EEPROM or, if not present, by the SoC's
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VideCore. Inform VideCore that VL805 was just reset.
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Also, as this creates a dependency between XHCI_PCI and VideoCore's
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firmware interface, reflect that on the firmware interface Kconfg.
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Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
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---
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drivers/firmware/Kconfig | 1 +
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drivers/usb/host/pci-quirks.c | 16 ++++++++++++++++
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2 files changed, 17 insertions(+)
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diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
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index 8007d4aa76dc..7ca346d3d337 100644
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--- a/drivers/firmware/Kconfig
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+++ b/drivers/firmware/Kconfig
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@@ -180,6 +180,7 @@ config ISCSI_IBFT
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config RASPBERRYPI_FIRMWARE
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tristate "Raspberry Pi Firmware Driver"
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depends on BCM2835_MBOX
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+ default XHCI_PCI
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help
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This option enables support for communicating with the firmware on the
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Raspberry Pi.
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diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
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index beb2efa71341..0dc34668bb2a 100644
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--- a/drivers/usb/host/pci-quirks.c
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+++ b/drivers/usb/host/pci-quirks.c
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@@ -16,6 +16,9 @@
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#include <linux/export.h>
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#include <linux/acpi.h>
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#include <linux/dmi.h>
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+
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+#include <soc/bcm2835/raspberrypi-firmware.h>
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+
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#include "pci-quirks.h"
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#include "xhci-ext-caps.h"
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2020-04-27 02:15:20 +00:00
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2020-04-23 20:47:21 +00:00
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@@ -1243,11 +1246,24 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
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2020-04-27 02:15:20 +00:00
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2020-04-23 20:47:21 +00:00
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static void quirk_usb_early_handoff(struct pci_dev *pdev)
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{
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+ int ret;
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+
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/* Skip Netlogic mips SoC's internal PCI USB controller.
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* This device does not need/support EHCI/OHCI handoff
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*/
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if (pdev->vendor == 0x184e) /* vendor Netlogic */
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return;
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+
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+ if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
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+ ret = rpi_firmware_init_vl805(pdev);
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+ if (ret) {
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+ /* Firmware might be outdated, or something failed */
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+ dev_warn(&pdev->dev,
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+ "Failed to load VL805's firmware: %d. Will continue to attempt to work, but bad things might happen. You should fix this...\n",
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+ ret);
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+ }
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+ }
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+
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if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI &&
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pdev->class != PCI_CLASS_SERIAL_USB_OHCI &&
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pdev->class != PCI_CLASS_SERIAL_USB_EHCI &&
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--
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2020-04-27 02:15:20 +00:00
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2.26.2
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2020-04-23 20:47:21 +00:00
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