From 12453a897e36665d75f1d7b722159ae1eeadf81c Mon Sep 17 00:00:00 2001 From: Ofer Heifetz Date: Tue, 29 Jan 2019 10:23:41 +0100 Subject: [PATCH] usb: host: xhci: mvebu: add reset on resume quirk The mvebu xHCI host driver does not have suspend/resume support. Use of the XHCI_RESET_ON_RESUME quirk is mandatory in order to avoid failures after resume. This will work only if no USB device is plugged-in. While at it, mention in the Kconfig file that this IP is also present on the A3700 SoC. Signed-off-by: Ofer Heifetz [miquel.raynal@bootlin.com: Reword the commit message] Signed-off-by: Miquel Raynal Reviewed-by: Gregory CLEMENT Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 4 ++-- drivers/usb/host/xhci-mvebu.c | 11 +++++++++++ drivers/usb/host/xhci-mvebu.h | 6 ++++++ drivers/usb/host/xhci-plat.c | 7 +++++++ 4 files changed, 26 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 29e8a56d8d82..d809671c5fea 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -70,13 +70,13 @@ config USB_XHCI_MTK If unsure, say N. config USB_XHCI_MVEBU - tristate "xHCI support for Marvell Armada 375/38x" + tristate "xHCI support for Marvell Armada 375/38x/37xx" select USB_XHCI_PLATFORM depends on HAS_IOMEM depends on ARCH_MVEBU || COMPILE_TEST ---help--- Say 'Y' to enable the support for the xHCI host controller - found in Marvell Armada 375/38x ARM SOCs. + found in Marvell Armada 375/38x/37xx ARM SOCs. config USB_XHCI_RCAR tristate "xHCI support for Renesas R-Car SoCs" diff --git a/drivers/usb/host/xhci-mvebu.c b/drivers/usb/host/xhci-mvebu.c index 32e158568788..60651a50770f 100644 --- a/drivers/usb/host/xhci-mvebu.c +++ b/drivers/usb/host/xhci-mvebu.c @@ -13,6 +13,7 @@ #include #include "xhci-mvebu.h" +#include "xhci.h" #define USB3_MAX_WINDOWS 4 #define USB3_WIN_CTRL(w) (0x0 + ((w) * 8)) @@ -72,3 +73,13 @@ int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd) return 0; } + +int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + /* Without reset on resume, the HC won't work at all */ + xhci->quirks |= XHCI_RESET_ON_RESUME; + + return 0; +} diff --git a/drivers/usb/host/xhci-mvebu.h b/drivers/usb/host/xhci-mvebu.h index 09791df2cec0..ca0a3a5721dd 100644 --- a/drivers/usb/host/xhci-mvebu.h +++ b/drivers/usb/host/xhci-mvebu.h @@ -12,10 +12,16 @@ struct usb_hcd; #if IS_ENABLED(CONFIG_USB_XHCI_MVEBU) int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd); +int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd); #else static inline int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd) { return 0; } + +static inline int xhci_mvebu_a3700_init_quirk(struct usb_hcd *hcd) +{ + return 0; +} #endif #endif /* __LINUX_XHCI_MVEBU_H */ diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index ef09cb06212f..0ac4ec975547 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -98,6 +98,10 @@ static const struct xhci_plat_priv xhci_plat_marvell_armada = { .init_quirk = xhci_mvebu_mbus_init_quirk, }; +static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = { + .init_quirk = xhci_mvebu_a3700_init_quirk, +}; + static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = { .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1, .init_quirk = xhci_rcar_init_quirk, @@ -123,6 +127,9 @@ static const struct of_device_id usb_xhci_of_match[] = { }, { .compatible = "marvell,armada-380-xhci", .data = &xhci_plat_marvell_armada, + }, { + .compatible = "marvell,armada3700-xhci", + .data = &xhci_plat_marvell_armada3700, }, { .compatible = "renesas,xhci-r8a7790", .data = &xhci_plat_renesas_rcar_gen2,