kernel/drivers/usb/common/ulpi.c, branch linux-5.1.y

USB: ulpi: fix bus-node lookup

2017-11-28T14:17:48Z

Fix bus-node lookup during registration, which ended up searching the whole device tree depth-first starting at the parent (or grand parent) rather than just matching on its children. To make things worse, the parent (or grand-parent) node could end being prematurely freed as well. Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT") Reported-by: Peter Robinson Reported-by: Stephen Boyd Cc: stable # 4.10 Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: common: Remove redundant license text

2017-11-04T10:55:39Z

Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Heikki Krogerus Cc: Peter Chen Cc: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

USB: add SPDX identifiers to all remaining files in drivers/usb/

2017-11-04T10:48:02Z

It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner Cc: Kate Stewart Cc: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Acked-by: Felipe Balbi Acked-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

usb: make device_type const

2017-08-28T09:17:57Z

Make this const as it is only stored in the type field of a device structure, which is const. Done using Coccinelle. Signed-off-by: Bhumika Goyal Acked-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman

of: Add function for generating a DT modalias with a newline

2017-03-22T19:56:13Z

The modalias sysfs attr is lacking a newline for DT aliases on platform devices. The macio and ibmebus correctly add the newline, but open code it. Introduce a new function, of_device_modalias(), that fills the buffer with the modalias including the newline and update users of the old of_device_get_modalias function. Signed-off-by: Rob Herring Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Frank Rowand Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Greg Kroah-Hartman

usb: ulpi: Support device discovery via DT

2017-01-20T03:24:06Z

The qcom HSIC ULPI phy doesn't have any bits set in the vendor or product ID registers. This makes it impossible to make a ULPI driver match against the ID registers. Add support to discover the ULPI phys via DT help alleviate this problem. In the DT case, we'll look for a ULPI bus node underneath the device registering the ULPI viewport (or the parent of that device to support chipidea's device layout) and then match up the phy node underneath that with the ULPI device that's created. The side benefit of this is that we can use standard properties in the phy node like clks, regulators, gpios, etc. because we don't have firmware like ACPI to turn these things on for us. And we can use the DT phy binding to point our phy consumer to the phy provider. The ULPI bus code supports native enumeration by reading the vendor ID and product ID registers at device creation time, but we can't be certain that those register reads will succeed if the phy is not powered up. To avoid any problems with reading the ID registers before the phy is powered we fallback to DT matching when the ID reads fail. If the ULPI spec had some generic power sequencing for these registers we could put that into the ULPI bus layer and power up the device before reading the ID registers. Unfortunately this doesn't exist and the power sequence is usually device specific. By having the device matched up with DT we can avoid this problem. Cc: Greg Kroah-Hartman Acked-by: Heikki Krogerus Cc: Acked-by: Rob Herring Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen

Merge tag 'usb-for-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

2016-09-14T18:37:50Z

Felipe writes: usb: patches for v4.9 merge window This time around we have 92 non-merge commits. Most of the changes are in drivers/usb/gadget (40.3%) with drivers/usb/gadget/function being the most active directory (27.2%). As for UDC drivers, only dwc3 (26.5%) and dwc2 (12.7%) have really been active. The most important changes for dwc3 are better support for scatterlist and, again, throughput improvements. While on dwc2 got some minor stability fixes related to soft reset and FIFO usage. Felipe Tonello has done some good work fixing up our f_midi gadget and Tal Shorer has implemented a nice API change for our ULPI bus. Apart from these, we have our usual set of non-critical fixes, spelling fixes, build warning fixes, etc.

usb: ulpi: make ops struct constant

2016-09-06T07:47:25Z

None of the core ulpi functions perform any changes to the operations struct, and logically as a struct that contains function pointers there's no reason it shouldn't be constant. Acked-by: Heikki Krogerus Signed-off-by: Tal Shorer Signed-off-by: Felipe Balbi

usb: ulpi: remove "dev" field from struct ulpi_ops

2016-09-06T07:47:25Z

Operations now use ulpi->dev.parent directly instead of via the ulpi_ops struct, making this field unused. Remove it. Acked-by: Heikki Krogerus Signed-off-by: Tal Shorer Signed-off-by: Felipe Balbi

usb: ulpi: rename operations {read|write}_dev to simply {read|write}

2016-09-06T07:47:24Z

With the removal of the old {read|write} operations, we can now safely rename the new api operations {read|write}_dev to use the shorter and clearer names {read|write}, respectively. Acked-by: Heikki Krogerus Signed-off-by: Tal Shorer Signed-off-by: Felipe Balbi