From: Ricardo Ribalda <ribalda@chromium.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Ricardo Ribalda <ribalda@chromium.org>
Subject: [PATCH v2 0/7] Show privacy_gpio as a v4l2_ctrl
Date: Wed, 4 Nov 2020 19:07:27 +0100 [thread overview]
Message-ID: <20201104180734.286789-1-ribalda@chromium.org> (raw)
Some devices can implement a physical switch to disable the input of the
camera on demand. Think of it like an elegant privacy sticker.
The system can read the status of the privacy switch via a GPIO.
The ACPI table maps this GPIO to the USB device via _CRS and _DSD
descriptors, so the kernel can find it.
The userspace applications need to know if the privacy pin is enabled
or not.
The obvious way to show it to userspace is via the V4L2_CID_PRIVACY control.
This patchset implement this functionality.
v2: Thanks to all the comments from Laurent!
- move guid to unit
- support entities with no pads
- CodeStyle
- Irq handling
- pr_cont
- new ids
Ricardo Ribalda (7):
media: uvcvideo: Use pr_cont() macro
media: uvcvideo: Move guid to entity
media: uvcvideo: Allow external entities
media: uvcvideo: Allow entities with no pads
media: uvcvideo: Entity defined get_info and get_cur
media: uvcvideo: Implement UVC_EXT_GPIO_UNIT
media: uvcvideo: Add Privacy control based on EXT_GPIO
drivers/media/usb/uvc/uvc_ctrl.c | 73 ++++++++-----
drivers/media/usb/uvc/uvc_driver.c | 166 +++++++++++++++++++++++++----
drivers/media/usb/uvc/uvcvideo.h | 19 +++-
3 files changed, 207 insertions(+), 51 deletions(-)
--
2.29.1.341.ge80a0c044ae-goog
next reply other threads:[~2020-11-04 18:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-04 18:07 Ricardo Ribalda [this message]
2020-11-04 18:07 ` [PATCH v2 1/7] media: uvcvideo: Use pr_cont() macro Ricardo Ribalda
2020-11-04 19:29 ` Joe Perches
2020-11-04 21:42 ` Laurent Pinchart
2020-11-04 21:51 ` Joe Perches
2020-11-04 22:31 ` Ricardo Ribalda
2020-11-04 23:00 ` Joe Perches
2020-11-04 23:01 ` Ricardo Ribalda
2020-11-04 23:59 ` Joe Perches
2020-11-05 9:50 ` Ricardo Ribalda
2020-11-05 18:58 ` Joe Perches
2020-11-05 19:52 ` Ricardo Ribalda
2020-11-04 21:42 ` Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 2/7] media: uvcvideo: Move guid to entity Ricardo Ribalda
2020-11-06 6:06 ` Laurent Pinchart
2020-11-06 8:45 ` Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 3/7] media: uvcvideo: Allow external entities Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 4/7] media: uvcvideo: Allow entities with no pads Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 5/7] media: uvcvideo: Entity defined get_info and get_cur Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 6/7] media: uvcvideo: Implement UVC_EXT_GPIO_UNIT Ricardo Ribalda
2020-11-04 18:07 ` [PATCH v2 7/7] media: uvcvideo: Add Privacy control based on EXT_GPIO Ricardo Ribalda
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