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| author | Howard Yen <howardyen@google.com> | 2021-01-19 18:10:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2023-06-14 17:35:00 +0000 |
| commit | 60662882b7bd3def130b5bb5d27ab55848d284e7 (patch) | |
| tree | 436f1762f3f52cb4633d0e322a4a42d6e1189355 | |
| parent | 6496f6cfbbd3bf241c6f16c7621db32088a1f073 (diff) | |
| download | common-60662882b7bd3def130b5bb5d27ab55848d284e7.tar.gz | |
FROMLIST: usb: xhci-plat: add xhci_plat_priv_overwrite
Add an overwrite to platform specific callback for setting up the
xhci_vendor_ops, allow vendor to store the xhci_vendor_ops and
overwrite them when xhci_plat_probe invoked.
This change is depend on Commit in this patch series
("usb: host: add xhci hooks for USB offload"), vendor needs
to invoke xhci_plat_register_vendor_ops() to register the vendor specific
vendor_ops. And the vendor_ops will overwrite the vendor_ops inside
xhci_plat_priv in xhci_vendor_init() during xhci-plat-hcd probe.
Change-Id: I8030fe3bd274615f5926f19014c3a3e066ca9dba
Signed-off-by: Howard Yen <howardyen@google.com>
Bug: 175358363
Link: https://lore.kernel.org/r/20210119101044.1637023-1-howardyen@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Signed-off-by: JaeHun Jung <jh0801.jung@samsung.com>
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 20 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-plat.h | 7 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index a59a5dacadb6..2ef716fc3212 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -173,9 +173,26 @@ static const struct of_device_id usb_xhci_of_match[] = { MODULE_DEVICE_TABLE(of, usb_xhci_of_match); #endif +static struct xhci_plat_priv_overwrite xhci_plat_vendor_overwrite; + +int xhci_plat_register_vendor_ops(struct xhci_vendor_ops *vendor_ops) +{ + if (vendor_ops == NULL) + return -EINVAL; + + xhci_plat_vendor_overwrite.vendor_ops = vendor_ops; + + return 0; +} +EXPORT_SYMBOL_GPL(xhci_plat_register_vendor_ops); + static int xhci_vendor_init(struct xhci_hcd *xhci) { struct xhci_vendor_ops *ops = xhci_vendor_get_ops(xhci); + struct xhci_plat_priv *priv = xhci_to_priv(xhci); + + if (xhci_plat_vendor_overwrite.vendor_ops) + ops = priv->vendor_ops = xhci_plat_vendor_overwrite.vendor_ops; if (ops && ops->vendor_init) return ops->vendor_init(xhci); @@ -185,9 +202,12 @@ static int xhci_vendor_init(struct xhci_hcd *xhci) static void xhci_vendor_cleanup(struct xhci_hcd *xhci) { struct xhci_vendor_ops *ops = xhci_vendor_get_ops(xhci); + struct xhci_plat_priv *priv = xhci_to_priv(xhci); if (ops && ops->vendor_cleanup) ops->vendor_cleanup(xhci); + + priv->vendor_ops = NULL; } static int xhci_plat_probe(struct platform_device *pdev) diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h index 49efcdf7990a..5b096f72636f 100644 --- a/drivers/usb/host/xhci-plat.h +++ b/drivers/usb/host/xhci-plat.h @@ -24,4 +24,11 @@ struct xhci_plat_priv { #define hcd_to_xhci_priv(h) ((struct xhci_plat_priv *)hcd_to_xhci(h)->priv) #define xhci_to_priv(x) ((struct xhci_plat_priv *)(x)->priv) + +struct xhci_plat_priv_overwrite { + struct xhci_vendor_ops *vendor_ops; +}; + +int xhci_plat_register_vendor_ops(struct xhci_vendor_ops *vendor_ops); + #endif /* _XHCI_PLAT_H */ |