On Thu, 2017-08-03 at 01:37 +0800, Sean Wang wrote: > On Wed, 2017-08-02 at 20:14 +0300, Andy Shevchenko wrote: > > On Thu, 2017-08-03 at 01:05 +0800, sean.wang@xxxxxxxxxxxx wrote: > > > From: Sean Wang <sean.wang@xxxxxxxxxxxx> > > > > > > This patchset introduces the support for MediaTek BTIF controller. > > > > > > MediaTek BTIF controller is the serial interface similar to UART > > > but > > > it > > > works only as the digital device which is mainly used to > > > communicate > > > with > > > the connectivity module also called CONNSYS inside the SoC which > > > could > > > be > > > mostly found on those MediaTek SoCs with Bluetooth feature. > > > > > > And the controller is made as being compatible with the 8250 > > > register > > > layout so it tends to be integrated with existing 8250 core driver > > > and > > > have no requirement for the modem configuration additionally such > > > as > > > the > > > baud rate calculation and assignment. +Cc: Arnd. > > Why it requires a separate driver? > > > > 8250_of is for DT enabled drivers. > > > > Hi, Andy > > thanks for your information > > the hardware is not completely identical to 8250 device, > it has extra registers belonged to platform control such as internal > loopback, dma disable/enable, sleep/wakeup setup and so on, so I > create > it as a separate driver. Over all 200+ LOCs I didn't see any of the above except loopback, which is one property that can be easily added to 8250_of.c. Moreover, if you have more code coming I would suggest you to split 8250_of to library and driver parts and re-use stuff from there. Arnd, what is your opinion about new 8250 OF based drivers? -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
