2c3165ebb6
support for the DMA40. Now with MUSB and some platform data removal. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAABAgAGBQJRrctTAAoJEEEQszewGV1zoFkP/0ZS3Hw4sGX4CRcVZysFZXon tEWMtNq3WvugmAMos1BJtVYjbu9oaI0kPnTZOU83rF8YzEGvRUy+3AlZXwGmkyYq NgdfDElAY815F9pJ3ffFL74Dd36paWPtO55JuUEsdxLZE7c4/qOBHykURU0NzMtK at70fgVLaNo+mjB+Q2M1ouI5tBCrdwso+vI9SHYlof2wt8TiAmbBTOcKO35nUzlk brcrTeTtdWCc2foP7cFgmjrsct3CzB4Dfl49MiCv1zsiQL5a+qB0EAMd4xYyuVqb GE1WQDvDwzEDre0pAb/io/NwnlF81tgr6dhFTeFxB44knqbkptQFw9XCDnTQTy5C dda5HSJ31ES3N2IUj5K0tlSm3/cBywt5IU79FwhFN4Ndq/nzDtZQ+Y2/X0IA99is eTpLM+/20juOyTxt4vHhdp4aL4r4ZdmOb0GAsyAg/TtsG5LJhZPIctZ+xexKqAhX wPkvHubv87ruQC6AOjVXwez+3tzTLuU7H8a9IOHi+oHk4r+mdba3kAKTyEl717Bk 44N0hcSLbZYktE9gdBJWuuySmfLXnbb/lc+2OjFYNWMHIgDbEwS2ZeVnKB8G+Eil iGDIMMnbCc9vA6fiDARZ3DvLFvahnUbO4BqcFozc/hHbhTceSn9xkXX3NcM8NCWF EAWWZlx4dtAbzB7ReTDm =rn7t -----END PGP SIGNATURE----- Merge tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers From Linus Walleij: Second set of DMA40 changes: refactorings and device tree support for the DMA40. Now with MUSB and some platform data removal. * tag 'ux500-dma40-for-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: dmaengine: ste_dma40: Fetch disabled channels from DT dmaengine: ste_dma40: Fetch the number of physical channels from DT ARM: ux500: Stop passing DMA platform data though AUXDATA dmaengine: ste_dma40: Allow memcpy channels to be configured from DT dmaengine: ste_dma40_ll: Replace meaningless register set with comment dmaengine: ste_dma40: Convert data_width from register bit format to value dmaengine: ste_dma40_ll: Use the BIT macro to replace ugly '(1 << x)'s ARM: ux500: Remove recently unused stedma40_xfer_dir enums dmaengine: ste_dma40: Replace ST-E's home-brew DMA direction defs with generic ones ARM: ux500: Replace ST-E's home-brew DMA direction definition with the generic one dmaengine: ste_dma40: Use the BIT macro to replace ugly '(1 << x)'s ARM: ux500: Remove empty function u8500_of_init_devices() ARM: ux500: Remove ux500-musb platform registation when booting with DT usb: musb: ux500: add device tree probing support usb: musb: ux500: attempt to find channels by name before using pdata usb: musb: ux500: harden checks for platform data usb: musb: ux500: take the dma_mask from coherent_dma_mask usb: musb: ux500: move the MUSB HDRC configuration into the driver usb: musb: ux500: move channel number knowledge into the driver
To understand all the Linux-USB framework, you'll use these resources:
* This source code. This is necessarily an evolving work, and
includes kerneldoc that should help you get a current overview.
("make pdfdocs", and then look at "usb.pdf" for host side and
"gadget.pdf" for peripheral side.) Also, Documentation/usb has
more information.
* The USB 2.0 specification (from www.usb.org), with supplements
such as those for USB OTG and the various device classes.
The USB specification has a good overview chapter, and USB
peripherals conform to the widely known "Chapter 9".
* Chip specifications for USB controllers. Examples include
host controllers (on PCs, servers, and more); peripheral
controllers (in devices with Linux firmware, like printers or
cell phones); and hard-wired peripherals like Ethernet adapters.
* Specifications for other protocols implemented by USB peripheral
functions. Some are vendor-specific; others are vendor-neutral
but just standardized outside of the www.usb.org team.
Here is a list of what each subdirectory here is, and what is contained in
them.
core/ - This is for the core USB host code, including the
usbfs files and the hub class driver ("khubd").
host/ - This is for USB host controller drivers. This
includes UHCI, OHCI, EHCI, and others that might
be used with more specialized "embedded" systems.
gadget/ - This is for USB peripheral controller drivers and
the various gadget drivers which talk to them.
Individual USB driver directories. A new driver should be added to the
first subdirectory in the list below that it fits into.
image/ - This is for still image drivers, like scanners or
digital cameras.
../input/ - This is for any driver that uses the input subsystem,
like keyboard, mice, touchscreens, tablets, etc.
../media/ - This is for multimedia drivers, like video cameras,
radios, and any other drivers that talk to the v4l
subsystem.
../net/ - This is for network drivers.
serial/ - This is for USB to serial drivers.
storage/ - This is for USB mass-storage drivers.
class/ - This is for all USB device drivers that do not fit
into any of the above categories, and work for a range
of USB Class specified devices.
misc/ - This is for all USB device drivers that do not fit
into any of the above categories.