On Feb 11, 2014, at 10:23 AM, Lukasz Rymanowski <lukasz.rymanowski@xxxxxxxxx> wrote: > Hi > > On 7 February 2014 12:35, Lukasz Rymanowski <lukasz.rymanowski@xxxxxxxxx> wrote: >> Hello, >> >> This is a try (long shoot) to upstream hci shared memory driver (hci_smd) >> which is used on Qualcomm platforms and BT chips. >> >> To make it build with upstream tree I had to introduce some simple SMD API. >> The idea here is that since SMD channel is represented by platform device >> (as it is done in mach-msm), >> then platfrom_data contains smd_data which contains API for that channel. >> >> Writing this SMD API I was inspired with MSM-SMD and since I'm not an expert >> in this area I'm asking for comments here. >> >> Maybe instead of SMD API I made, I should expose functions like smd_open(), smd_write() >> etc. something similar how sdio does, and just deliver to upstream dummy device >> implementing this SMD API? >> >> Other options I was considering is to implement module inside mach-msm which >> would handle registering SMD BT Channels and when it is done, it would register >> new platform device like "smd-bt". Then I could move smd.h to some bluetooth includes >> (althought don't now where at the moment) and hci_smd would register driver for "smd-bt" >> In this case I would also could rid of one static variable I have now in hci_smd >> >> Comments on those options are welcome. >> >> Anyway, Hci_smd is based on one of the older version of this driver found in msm kernel >> branch, so there are no wakelocks as in new version and also workqueues are used >> instead of takslet. >> >> Since SMD expose two channels, one for CMD/EVENT and one for ACL Data I decide to >> do separate worqueues for this. This is to make sure that ACL data never blocks EVENT >> packages >> > > Adding linux-arm-msm group for comments on SMD API. > > BR > Lukasz What chip/SoC/board are you trying to get bluetooth support on? - k -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
