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Avila" , Daehwan Jung , sc.suh@samsung.com, cpgs@samsung.com, cpgsproxy5@samsung.com Subject: [PATCH v2 3/4] usb: host: add some to xhci overrides for USB offload Date: Mon, 7 Mar 2022 19:17:35 +0900 Message-Id: <1646648256-105214-4-git-send-email-dh10.jung@samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1646648256-105214-1-git-send-email-dh10.jung@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpmk+LIzCtJLcpLzFFi42LZdljTTDf7pmqSwd8uaYuXhzQtNj+8wmZx Z8E0JosnRxaxWzQvXs9mcf3Pe0aL9ucX2Cwu75rDZrFoWSuzRfOmKawWM9cqW3TdvcHowONx ua+XyWPBplKPxXteMnnsn7uG3aNvyypGj8+b5ALYorJtMlITU1KLFFLzkvNTMvPSbZW8g+Od 403NDAx1DS0tzJUU8hJzU22VXHwCdN0yc4AuVFIoS8wpBQoFJBYXK+nb2RTll5akKmTkF5fY KqUWpOQUmBfoFSfmFpfmpevlpZZYGRoYGJkCFSZkZ6w/vIe14K5gRdeCzcwNjP/5uhg5OSQE TCRuXrnO2MXIxSEksINRYkHjN1aQhJDAJ0aJ1hvKEIlvjBK/l69lh+k4/GUuC0RiL6PE3U3P 2CCcH4wS+y43AzkcHGwCWhLfFzKCNIgIxEks7bzEBFLDLHCVSWLJhmNgk4QF/CXajk9nA7FZ BFQlTh9fxgRi8wq4SUycfYUZYpucxM1znWA2p4C7xLcpvWCDJATeskv83NnMCFHkInF82iGo BmGJV8e3QJ0qJfGyvw3KLpbY9akVqrmBUaLxwQmoBmOJWc/aGUGuZhbQlFi/Sx/ElBBQljhy iwWigleiYeNvsDHMAnwSHYf/skOU8Ep0tAlBlChLTL88gRXClpQ4+Poc1HAPifeH/jBBwmcW o8TcxbPZJzDKz0JYtoCRcRWjWGpBcW56arFRgQk89pLzczcxglOjlscOxtlvP+gdYmTiYDzE KMHBrCTCe/+8SpIQb0piZVVqUX58UWlOavEhRlNgQE5klhJNzgcm57ySeEMTSwMTMzNDcyNT A3MlcV6vlA2JQgLpiSWp2ampBalFMH1MHJxSDUzRIUzVylv88r7eCM85J5le/c2tW81VZeZ3 99o17uXSC3Vrstd1xLxNr9ee5Bbj0V7wzOZ945eSf9ts1VY/rA9zd91T+sLhBqvr4cs7mf2e HJDSj31ZLcVduMnKksfpVNODbds3iVWYz0tmvS8tfkbAv2hzWNjtKKWjnffOXV54Uai8a/Pa Jh4fec4msa6Qfcq909qTZ3uqt92Zlij+d9azQ3Y+nBw3ezMext9IOX12tfGuvk2LZF203ult fHbT7vyaZd4lS6wezHaXe6L9SqzzlZLssXJ7jivCHolrT16/y6zBUFK/bPo/E/Wq6jnPe2bO f3Jvx8Q5a0+9FbywaRHDTMbUey9bUn2Uj/9jOKnEUpyRaKjFXFScCADe6munFgQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrELMWRmVeSWpSXmKPExsWy7bCSvC73HdUkgw3/uSxeHtK02PzwCpvF nQXTmCyeHFnEbtG8eD2bxfU/7xkt2p9fYLO4vGsOm8WiZa3MFs2bprBazFyrbNF19wajA4/H 5b5eJo8Fm0o9Fu95yeSxf+4ado++LasYPT5vkgtgi+KySUnNySxLLdK3S+DKWH94D2vBXcGK rgWbmRsY//N1MXJySAiYSBz+Mpeli5GLQ0hgN6PEiY4z7BAJSYmlc29A2cIS91uOsEIUfWOU 2PX8AVAHBwebgJbE94WMIDUiAnESKy7vARvELHCfSeL8u++sIAlhAV+JrotLwYpYBFQlTh9f xgRi8wq4SUycfYUZYoGcxM1znWA2p4C7xLcpvWA1QkA1F09cZZrAyLeAkWEVo2RqQXFuem6x YYFhXmq5XnFibnFpXrpecn7uJkZwsGpp7mDcvuqD3iFGJg7GQ4wSHMxKIrz3z6skCfGmJFZW pRblxxeV5qQWH2KU5mBREue90HUyXkggPbEkNTs1tSC1CCbLxMEp1cBksTH4pMHjeR0mM262 /Ht0RSwxgNFgmnhITtC5lODUZ9+yXM5ohn+SZjzE0a3HY1xzgct0Jc8xq4WvH6WXWWc+jv41 fUJXUWSOv5n2/tMln6OvNP370tOglRDdrFreFuyRkHX/x9eXD2fMPFd+Puuef/C60h2nt4Yy ZESujTbdMGvi707h1Yxf6kVsD3TJ8lXtcP9Q+i/CncWB8X+dmUipiqtEl8yC8pcLTa+v3XbL 9Irj87kXxI8s2PJQKk9Gzskv9fDPOrn3d4641vMKqfzjcDsSkF7J1Gkk+YHVyWHXq8mX6xht GrL9dIRKp3dqlJ+P7VoRn/R9l0Vu14Q10lePuL8Nap3qa7bysH7qXSWW4oxEQy3mouJEABi5 NRHFAgAA X-CMS-MailID: 20220307101851epcas2p4c26eaf8ed7f940db8c42cb3b63ff5331 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL X-CPGSPASS: Y CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220307101851epcas2p4c26eaf8ed7f940db8c42cb3b63ff5331 References: <1646648256-105214-1-git-send-email-dh10.jung@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Co-processor needs some information about connected usb device. It's proper to pass information after usb device gets address when getting "Set Address" command. It supports vendors to implement it using xhci overrides. There're several power scenarios depending on vendors. It gives vendors flexibilty to meet their power requirement. They can override suspend and resume of root hub. Signed-off-by: Daehwan Jung --- drivers/usb/host/xhci.c | 6 ++++++ drivers/usb/host/xhci.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 3f82df2c5be1..38a030d04851 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -5558,6 +5558,12 @@ void xhci_init_driver(struct hc_driver *drv, drv->check_bandwidth = over->check_bandwidth; if (over->reset_bandwidth) drv->reset_bandwidth = over->reset_bandwidth; + if (over->address_device) + drv->address_device = over->address_device; + if (over->bus_suspend) + drv->bus_suspend = over->bus_suspend; + if (over->bus_resume) + drv->bus_resume = over->bus_resume; } } EXPORT_SYMBOL_GPL(xhci_init_driver); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e2ed4f88ae4b..e6fd53e36889 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1947,6 +1947,9 @@ struct xhci_driver_overrides { struct usb_host_endpoint *ep); int (*check_bandwidth)(struct usb_hcd *, struct usb_device *); void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); + int (*address_device)(struct usb_hcd *hcd, struct usb_device *udev); + int (*bus_suspend)(struct usb_hcd *hcd); + int (*bus_resume)(struct usb_hcd *hcd); }; #define XHCI_CFC_DELAY 10 @@ -2103,6 +2106,7 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); +int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id); int xhci_ext_cap_init(struct xhci_hcd *xhci);