linux-kernel - [RFC 0/2] Extend functionality for GET

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Date:   Mon,  1 Aug 2022 18:00:08 +0530
From:   Suniel Mahesh <sunil@...rulasolutions.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        Jagan Teki <jagan@...rulasolutions.com>
Cc:     linux-kernel@...r.kernel.org, linux-amarula@...rulasolutions.com,
        USB list <linux-usb@...r.kernel.org>
Subject: [RFC 0/2] Extend functionality for GET_REPORT

This series does the following:

patch 1/2 extends functionality for GET_REPORT.

The current kernel implementation for GET_REPORT is that the kernel
sends back a zero filled report (of length == report_length), when
the Host request's a particular report from the device/gadget.

This changeset extends functionality for GET_REPORT by sending a
particular report based on report type and report number.

patch 2/2 adds a test application to test the extended
functionality.

please review and share your thoughts.

Suniel Mahesh (2):
  usb: gadget: f_hid: Extend functionality for GET_REPORT mode
  HID: ghid: add example program for GET_REPORT

 drivers/usb/gadget/function/f_hid.c  | 166 ++++++++++++++++++++++++++-
 include/{ => uapi}/linux/usb/g_hid.h |  10 ++
 samples/Kconfig                      |  10 ++
 samples/Makefile                     |   1 +
 samples/ghid/Makefile                |   4 +
 samples/ghid/test-hid.c              | 134 +++++++++++++++++++++
 6 files changed, 323 insertions(+), 2 deletions(-)
 rename include/{ => uapi}/linux/usb/g_hid.h (72%)
 create mode 100644 samples/ghid/Makefile
 create mode 100644 samples/ghid/test-hid.c

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2.25.1