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usb: host: xhci-plat: set resume_quirk() for R-Car controllers 

This patch sets resume_quirk() for R-Car controllers to re-download
the firmware in resume timing. Otherwise, if the controller's power
is down in suspend timing, the firmware in the controller goes away,
and then the controller doesn't work after resume.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2017-04-19 16:55:48 +03:00 committed by Greg Kroah-Hartman
parent 98c0a3ffa3
commit 435cc1138e
3 changed files with 20 additions and 0 deletions
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3
drivers/usb/host/xhci-plat.c
View File

@ -103,18 +103,21 @@ static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
.init_quirk = xhci_rcar_init_quirk,
.plat_start = xhci_rcar_start,
.resume_quirk = xhci_rcar_resume_quirk,
};
static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2,
.init_quirk = xhci_rcar_init_quirk,
.plat_start = xhci_rcar_start,
.resume_quirk = xhci_rcar_resume_quirk,
};
static const struct xhci_plat_priv xhci_plat_renesas_rcar_r8a7796 = {
.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V3,
.init_quirk = xhci_rcar_init_quirk,
.plat_start = xhci_rcar_start,
.resume_quirk = xhci_rcar_resume_quirk,
};
static const struct of_device_id usb_xhci_of_match[] = {

11
drivers/usb/host/xhci-rcar.c
View File

@ -198,3 +198,14 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd)
return xhci_rcar_download_firmware(hcd);
}
int xhci_rcar_resume_quirk(struct usb_hcd *hcd)
{
int ret;
ret = xhci_rcar_download_firmware(hcd);
if (!ret)
xhci_rcar_start(hcd);
return ret;
}

6
drivers/usb/host/xhci-rcar.h
View File

@ -18,6 +18,7 @@
#if IS_ENABLED(CONFIG_USB_XHCI_RCAR)
void xhci_rcar_start(struct usb_hcd *hcd);
int xhci_rcar_init_quirk(struct usb_hcd *hcd);
int xhci_rcar_resume_quirk(struct usb_hcd *hcd);
#else
static inline void xhci_rcar_start(struct usb_hcd *hcd)
{
@ -27,5 +28,10 @@ static inline int xhci_rcar_init_quirk(struct usb_hcd *hcd)
{
return 0;
}
static inline int xhci_rcar_resume_quirk(struct usb_hcd *hcd)
{
return 0;
}
#endif
#endif /* _XHCI_RCAR_H */