From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Nicolas Saenz Julienne Date: Tue, 10 Mar 2020 13:52:42 +0100 Subject: [PATCH] USB: pci-quirks: Add Raspberry Pi 4 quirk On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore. Inform VideCore that VL805 was just reset. Also, as this creates a dependency between XHCI_PCI and VideoCore's firmware interface, reflect that on the firmware interface Kconfg. Signed-off-by: Nicolas Saenz Julienne --- drivers/firmware/Kconfig | 1 + drivers/usb/host/pci-quirks.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 8007d4aa76dc..7ca346d3d337 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -180,6 +180,7 @@ config ISCSI_IBFT config RASPBERRYPI_FIRMWARE tristate "Raspberry Pi Firmware Driver" depends on BCM2835_MBOX + default XHCI_PCI help This option enables support for communicating with the firmware on the Raspberry Pi. diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index beb2efa71341..0dc34668bb2a 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -16,6 +16,9 @@ #include #include #include + +#include + #include "pci-quirks.h" #include "xhci-ext-caps.h" @@ -1243,11 +1246,24 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) static void quirk_usb_early_handoff(struct pci_dev *pdev) { + int ret; + /* Skip Netlogic mips SoC's internal PCI USB controller. * This device does not need/support EHCI/OHCI handoff */ if (pdev->vendor == 0x184e) /* vendor Netlogic */ return; + + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { + ret = rpi_firmware_init_vl805(pdev); + if (ret) { + /* Firmware might be outdated, or something failed */ + dev_warn(&pdev->dev, + "Failed to load VL805's firmware: %d. Will continue to attempt to work, but bad things might happen. You should fix this...\n", + ret); + } + } + if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI && pdev->class != PCI_CLASS_SERIAL_USB_OHCI && pdev->class != PCI_CLASS_SERIAL_USB_EHCI && -- 2.26.2