[PATCH v4 2/5] xhci: Platform: Set Synopsis device disconnection quirk based on platform data
From: Sneeker Yeh <hidden>
Date: 2015-02-17 05:42:12
Also in:
linux-omap, lkml
Subsystem:
the rest, usb subsystem, usb xhci driver · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Mathias Nyman
If an xhci platform has Synopsis device disconnection errata then enable XHCI_DISCONNECT_QUIRK quirk flag. Signed-off-by: Sneeker Yeh <redacted> --- drivers/usb/host/xhci-plat.c | 3 +++ include/linux/usb/xhci_pdriver.h | 4 ++++ 2 files changed, 7 insertions(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 08d402b..40beb95 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c@@ -147,6 +147,9 @@ static int xhci_plat_probe(struct platform_device *pdev) if ((node && of_property_read_bool(node, "usb3-lpm-capable")) || (pdata && pdata->usb3_lpm_capable)) xhci->quirks |= XHCI_LPM_SUPPORT; + + if (pdata && pdata->delay_portcsc_clear) + xhci->quirks |= XHCI_DISCONNECT_QUIRK; /* * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset) * is called by usb_add_hcd().
diff --git a/include/linux/usb/xhci_pdriver.h b/include/linux/usb/xhci_pdriver.h
index 376654b..a37a3a5 100644
--- a/include/linux/usb/xhci_pdriver.h
+++ b/include/linux/usb/xhci_pdriver.h@@ -18,10 +18,14 @@ * * @usb3_lpm_capable: determines if this xhci platform supports USB3 * LPM capability + * @delay_portcsc_clear: determines if Synopsis USB3 core has errata in + * "DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1" hardware + * configuration. * */ struct usb_xhci_pdata { unsigned usb3_lpm_capable:1; + unsigned delay_portcsc_clear:1; }; #endif /* __USB_CORE_XHCI_PDRIVER_H */
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1.7.9.5