kernel/linux.git/drivers/usb/phy/phy-generic.c, branch linux-5.11.y

usb: phy-generic: Delete unused platform data

2020-01-15T09:39:20+00:00

The last user of the phy generic platform data was deleted in commit 1e041b6f313aaa966612a7e415cfc09c90d6b829 ("usb: dwc3: exynos: Remove dead code"). So get rid of the platform data, which rids us of another consumer of the legacy GPIO API at the same time. Make sure we only inlcude which is all we use. Alter the usb_phy_gen_create_phy() function prototype to not pass any platform data as this is just hardcoded to NULL at all locations calling it in the kernel. Move the devm_gpiod_get* calls out of the if (of_node) parenthesis, as these calls are generic and do not depend on device tree, they are used by any hardware description. Cc: Marek Szyprowski Cc: Felipe Balbi Signed-off-by: Linus Walleij Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

usb: phy-generic: Use gpiod_set_value_cansleep

2018-03-13T08:47:52+00:00

The nop_reset and shutdown methods are called in a context that can sleep, so use gpiod_set_value_cansleep instead of gpiod_set_value. If you've connected the reset line to a GPIO expander, you'd get a kernel "slowpath" warning with gpiod_set_value. Signed-off-by: Mike Looijmans Signed-off-by: Felipe Balbi

USB: phy: Remove redundant license text

2017-11-07T14:45:01+00:00

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: Thierry Reding Cc: Jonathan Hunter Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

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

2017-11-04T10:48:02+00:00

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: phy: phy-generic: propagate clk_get error if clock is required

2017-10-19T07:38:04+00:00

If the clock handle is given in the DT, it means the clock is required for proper operation of the PHY. In that case a failure to obtain the clock must be propagated to stop the driver from probing. This fixes working with clocks, which request probe deferral. Signed-off-by: Lucas Stach Signed-off-by: Felipe Balbi

usb: phy: phy-generic: add the implementation of .set_suspend

2016-11-18T11:54:42+00:00

Add clock operation at .set_suspend if the PHY has suspend requirement, it can be benefit of power saving for phy and the whole system (parent clock may also be disabled). Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi

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

2016-09-14T18:37:50+00:00

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: phy: phy-generic: Check clk_prepare_enable() error

2016-09-05T10:39:23+00:00

clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of failure. Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi

usb: phy: generic: remove the vbus dependency

2016-08-25T09:13:07+00:00

As the last known user, ie. pxa27x_udc relying on calls to usb_gadget_xxx() was amended to use the phy notifier, remove a bit the USB stack adherence. Actually the driver still uses the gadget API for structures definition, but the implementation of USB gadget specific function usb_gadget_*() is not necessary anymore. Signed-off-by: Robert Jarzmik Signed-off-by: Felipe Balbi

usb: phy: generic: cope with initial state

2016-08-25T09:13:07+00:00

In the gpio based case, the status of the phy is known at start by reading the VBus gpio. Actually, this is a fix, as this initial state, when not set up, prevents a gadget to answer to the enumeration phase, as there is no notification in this case (the VBus is already high when kernel boots) so no interrupt is triggered, and the flow is : - gadget initializes - gadget gets its phy-generic with a xxx_get_phy_xxx() call type - gadget does a "set_peripheral()" call type => here if the otg->state is correctly filled, the proper vbus handling will be called, and the gadget will be aware it should answer enumeration and go forth Without this fix, the USB cable must be removed and replugged for any gadget relying on phy-generic and its gpio vbus handling to work. The problem was seen on a pxa27x architecture based board on a devicetree build. Signed-off-by: Robert Jarzmik Signed-off-by: Felipe Balbi