On Fri, Mar 11, 2016 at 08:20:43AM +0800, Lu Baolu wrote: > > > On 03/11/2016 08:03 AM, Greg Kroah-Hartman wrote: > > On Tue, Mar 08, 2016 at 03:53:41PM +0800, Lu Baolu wrote: > >> Intel SOC chips are featured with USB dual role. The host role is > >> provided by Intel xHCI IP, and the gadget role is provided by IP > >> from designware. Tablet platform designs always share a single > >> port for both host and gadget controllers. There is a mux to > >> switch the port to the right controller according to the cable > >> type. OS needs to provide the callback to control the mux when > >> a plug-in event raises. The method to control the mux is platform > >> dependent. At least three types of implementation can be found > >> across current devices. 1) GPIO pins; 2) a unit which can be > >> controlled by memory mapped registers; 3) ACPI ASL code. > >> > >> This patch series adds supports for Intel dual role port mux. > >> It includes: > >> (1) A helper layer on top of extcon for individual mux driver. > >> It listens to the USB-HOST extcon cable and call the switch > >> call-back when the cable state changes. > >> (2) Drivers for GPIO controlled port mux which could be found on > >> Baytrail devices. A mfd driver is used to split the GPIOs into > >> USB gpio extcon device and a USB mux device. Driver for USB > >> gpio extcon device is already in upstream Linux. This patch > >> series includes a driver for GPIO USB mux. > >> (3) Drivers for USB port mux controlled through memory mapped > >> registers and the logic to create the mux device. This type > >> of dual role port mux could be found in Cherry Trail and > >> Broxton devices. > >> > >> Lu Baolu (7): > >> extcon: usb-gpio: add device binding for platform device > >> extcon: usb-gpio: add support for ACPI gpio interface > >> usb: mux: add common code for Intel dual role port mux > >> usb: mux: add driver for Intel gpio controlled port mux > >> usb: mux: add driver for Intel drcfg controlled port mux > >> usb: pci-quirks: add Intel USB drcfg mux device > >> mfd: intel_vuport: Add Intel virtual USB port MFD Driver > > You don't describe here what you changed from v2, or even from v1. > > Please always be specific, we don't remember what your last submissions > > looked like at all... > > I am sorry. I put the change log after file change summary. > I will move it up here next time. Ah, totally missed it, sorry about that am not expecting that below a diffstat. greg k-h -- 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
