kernel/drivers/usb/chipidea/host.c, branch linux-4.16.y

USB: chipidea: Remove redundant license text

2017-11-07T14:45:01Z

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: Peter Chen 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: chipidea: use bus->sysdev for DMA configuration

2017-03-23T07:20:21Z

Set the dma for chipidea from sysdev. This is inherited from its parent node. Also, do not set dma mask for child as it is not required now. Signed-off-by: Arnd Bergmann Signed-off-by: Sriram Dash Acked-by: Peter Chen Signed-off-by: Mathias Nyman Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman

usb: chipidea: msm: Handle phy power states

2017-01-20T07:27:35Z

The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Hook the phy initialization into the RESET event and the phy power off into the STOPPED event. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen

usb: chipidea: Notify events when switching host mode

2017-01-20T03:25:06Z

The chipidea/udc.c file sends a CI_HDRC_CONTROLLER_RESET_EVENT to the wrapper drivers when it calls hw_device_reset(), but that function is not called from chipidea/host.c. And the udc.c file sends the CI_HDRC_CONTROLLER_STOPPED_EVENT but the host.c file doesn't do anything. The intent of the reset event is to allow the wrapper driver to do any wrapper specific things after the reset bit has been set in the usb command register. Therefore, add this event hook in the host role after we toggle that bit. Similarly, the intent of the stopped event is to allow the wrapper driver to do any wrapper specific things after the device is stopped. So when we stop the host role, send the stopped event. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen

usb: chipidea: host: fix NULL ptr dereference during shutdown

2016-10-25T08:14:32Z

After commit b09b5224fe86 ("usb: chipidea: implement platform shutdown callback") and commit 43a404577a93 ("usb: chipidea: host: set host to be null after hcd is freed") a NULL pointer dereference is caused on i.MX23 during shutdown. So ensure that role is set to CI_ROLE_END and we finish interrupt handling before the hcd is deallocated. This avoids the NULL pointer dereference. Suggested-by: Alan Stern Signed-off-by: Stefan Wahren Fixes: b09b5224fe86 ("usb: chipidea: implement platform shutdown callback") Signed-off-by: Peter Chen

usb: chipidea: host: disable io watchdog

2016-09-14T02:58:13Z

The Chipidea EHCI core seems to behave sanely and doesn't need the IO watchdog. This kills off 10 non-deferrable wakeup events per second when the controller is otherwise idle. Signed-off-by: Lucas Stach Tested-by: Stefan Agner Signed-off-by: Peter Chen

usb: chipidea: host: set host to be null after hcd is freed

2015-12-24T06:17:58Z

Set ci->hcd and ci->otg.host to be null in host_stop since the hcd already freed. Signed-off-by: Li Jun Signed-off-by: Peter Chen

usb: chipidea: host: override hcd reset API

2015-08-14T01:13:13Z

The system configuration API should be called before the controller run, otherwise, undefined results may occur. So, we override hcd reset API, and add system configuration API after controller reset. Cc: Li Jun Cc: Alan Stern Acked-by: Alan Stern Signed-off-by: Peter Chen

usb: chipidea: host: delete the redundancy ci_hdrc struct

2015-08-14T01:13:12Z

The struct ci_hdrc is the drvdata for hcd device, so we don't need to introduce extra ci_hdrc structure for ehci. Signed-off-by: Peter Chen