Re: [PATCH 0/5 v3] usb: musb: Power management support

[Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>]

On Mon, Feb 28, 2011 at 10:56:11AM +0200, Felipe Balbi wrote:
> Hi,
> 
> On Mon, Feb 28, 2011 at 02:19:31PM +0530, Hema HK wrote:
> > This patch series supports the retention and offmode support in the 
> > idle path for musb driver using runtime pm APIs.
> > 
> > This is restricted to support offmode and retention only when device not
> > connected.When device/cable connected with gadget driver loaded, configured
> > to no idle/standby which will not allow the core transition to retention
> > or off.
> > 
> > There is no context save/restore done by hardware for musb in OMAP3
> > and OMAP4,driver has to take care of saving and restoring the context
> > during offmode.
> > 
> > Musb has a requirement of configuring sysconfig register to force
> > idle/standby mode and set the ENABLE_FORCE bit in module STANDBY register
> > for retention and offmode support.
> > 
> > Runtime pm and hwmod frameworks will take care of configuring to force
> > idle/standby when pm_runtime_put_sync is called and back to no
> > idle/standby when pm_runeime_get_sync is called.
> > 
> > Compile, boot tested and also tested the retention in the idle path on
> > OMAP3630Zoom3. And tested the global suspend/resume with offmode enabled.
> > Usb basic functionality tested on OMAP4430SDP.
> > 
> > There is some problem with idle path offmode in mainline, I could not test
> > with offmode. But I have tested this patch with resetting the controller
> > in the idle path when wakeup from retention just to make sure that the
> > context is lost, and restore path is working fine.
> 
> Tony and Greg, how do we handle this one ? Who should take my pull request
> for this series ? I hope we still have a little time to get this into
> 2.6.39, but if we don't I can hold on to them until 2.6.40.

Doesn't bother me which tree they go through, I can take them, or, if
it's easier due to omap merges, Tony can.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html