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path: root/drivers/usb/host/ehci-lpm.c
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* USB: EHCI: remove unused Link Power Management codeAlan Stern2012-10-311-101/+0
| | | | | | | | | | | | | | | | | | | This patch (as1622) removes the USB-2.1 Link Power Management code from the ehci-hcd driver. This code was never integrated with usbcore, it is full of bugs, and it was not getting used by anybody. However, the debugging code for dumping the LPM-related fields in the EHCI registers is left in place. In theory it might be useful to see these values, even though we don't use them. This essentially amounts to a partial revert of commit aa4d8342988d0c1a79ff19b2ede1e81dfbb16ea5 (USB: EHCI: EHCI 1.1 addendum: preparation) and an almost full revert of commit 48f24970144479c29b8cee6d2e1dbedf6dcf9cfb (USB: EHCI: EHCI 1.1 addendum: Basic LPM feature support) plus its follow-ons. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: EHCI: move ehci_update_device() to ehci-lpm.cAlan Stern2012-10-241-3/+20
| | | | | | | | | | | | | In preparation for splitting the ehci-hcd driver into a core library and separate platform-specific driver modules, this patch (as1618) moves ehci_update_device() from a couple of platform-specific source files into ehci-lpm.c. This is where it should have been all along, since all it does is call a couple of other functions that are already in ehci-lpm.c. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* USB: Mark EHCI LPM functions as __maybe_unusedMaksim Rayskiy2011-02-171-2/+3
| | | | | | | | ehci_lpm_set_da and ehci_lpm_check are EHCI 1.1 specific functions which are not used on many platforms but do generate annoying gcc warnings Signed-off-by: Maksim Rayskiy <mrayskiy@broadcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: EHCI: EHCI 1.1 addendum: Basic LPM feature supportAlek Du2010-08-101-0/+83
With this patch, the LPM capable EHCI host controller can put device into L1 sleep state which is a mode that can enter/exit quickly, and reduce power consumption. Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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