kernel/drivers/usb/dwc3/debugfs.c, branch linux-4.16.y

USB: dwc3: 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: Kukjin Kim Cc: Krzysztof Kozlowski Cc: Patrice Chotard Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

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

2017-11-04T10:48:02Z

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: dwc3: debugfs: slightly improve output of trb_ring

2017-06-02T08:22:28Z

Instead of printing out enqueue and dequeue pointer value as a header to the output, let's mark the TRBs in question with 'E' and 'D'. The output looks slightly easier to read. Signed-off-by: Felipe Balbi

usb: dwc3: core: make dwc3_set_mode() work properly

2017-04-11T07:58:30Z

We can't have both Host and Peripheral roles active at the same time because of one detail on DWC3: it shares the same memory area for both Host and Peripheral registers. When swapping roles we must reinitialize the new role every time. Let's make sure this works for our debugfs interface. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: remove unnecessary | operator

2017-04-11T07:58:30Z

Each role is mutually exclusive, the | operator is unnecessary. Remove it. Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi

usb: dwc3: expose dwc3_trb_type_string()

2017-04-11T07:58:26Z

That helper can be used from our tracepoint interface with very minor edits. Let's do so. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: return strings that match tracepoints

2017-04-11T07:58:26Z

In order to improve usability a tiny bit, we will return strings that match what our tracepoints return. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: make use of dwc3_gadget_link_string()

2017-04-11T07:58:26Z

Instead of redecoding link state into a string, use our helper. Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: downcase OTG on 'mode' file

2017-04-11T07:58:25Z

When writing, we expect the "otg" string. When showing, we return "OTG". Let's downcase that word to avoid confusion. Signed-off-by: Felipe Balbi

usb: dwc3: refactor gadget endpoint count calculation

2017-04-11T07:58:18Z

- DWC_USB3_NUM indicates the number of Device mode single directional endpoints, including OUT and IN endpoint 0. - DWC_USB3_NUM_IN_EPS indicates the maximum number of Device mode IN endpoints active at any time, including control endpoint 0. It's possible to configure RTL such that DWC_USB3_NUM_EPS is equal to DWC_USB3_NUM_IN_EPS. dwc3-core calculates the number of OUT endpoints as DWC_USB3_NUM minus DWC_USB3_NUM_IN_EPS. If RTL has been configured with DWC_USB3_NUM_IN_EPS equal to DWC_USB3_NUM then dwc3-core will calculate the number of OUT endpoints as zero. For example a from dwc3_core_num_eps() shows: [ 1.565000] /usb0@f01d0000: found 8 IN and 0 OUT endpoints This patch refactors the endpoint calculation down to one variable dwc->num_eps taking care to maintain the current mapping of endpoints for fixed FPGA configurations as described in Table 4-7 of version 2.60a of the DWC USB3 databook. The endpoint mapping will then be EP-OUT, EP-IN etc, up to DWC_USB3_NUM. If DWC_USB3_NUM is odd then OUT will take the extra endpoint. Suggested-by: Felipe Balbi Signed-off-by: Bryan O'Donoghue Signed-off-by: Felipe Balbi