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. Best regards, Baolu > > thanks, > > 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
