On 2/15/2011 11:25 PM, Matthieu CASTET wrote: > Greg KH a écrit : >> On Sat, Feb 12, 2011 at 03:05:21PM +0100, matthieu castet wrote: >>> Hi, >>> >>> grepping for tdi (arc/chipidea/mips otg ehci like controller) >>> registers in driver/usb/gadget show interesting things : it seems we >>> have 4 drivers for handling the same controller. >>> - fsl_udc_core [1] >>> - ci13xxx_udc [2] >>> - mv_udc [3] >>> - langwell [4] >>> >>> fsl is the historic driver (freesale and tegra will be using it). >>> ci13xxx was added by mips and msm chip use it >>> mv_udc/langwell is newer. >>> >>> I didn't look at the driver in details, there may be tiny difference >>> between all this controllers. >>> >>> Shouldn't we try to merge them and rename to a clear name in order >>> people don't rewrite again the same driver ? >> >> Sure, if you think it is possible, please do so. >> > But without help of the current maintainers it will be difficult. I have > no way to test on their platform. > I can help you in testing it on MSM > Also how to select which driver should be the base of the merge : > - fsl_udc_core is the historic driver and seems to have tested pretty > well (and was used on big endian arch) > - langwell_udc seems the most active one. > ci13xxx_udc is independent of platform/pci bus. We can hook up drivers easily with this driver. Please see drivers/usb/gadget/ci13xxx_msm.c. It can also interact with OTG. We have quirks/events in place for SoC specific workarounds. Thanks, Pavan -- Sent by a consultant of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
