From: Hans de Goede <hdegoede@redhat.com>
To: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Theodore Kilgore <kilgota@banach.math.auburn.edu>,
Alan Stern <stern@rowland.harvard.edu>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Greg KH <greg@kroah.com>,
linux-usb@vger.kernel.org, linux-media@vger.kernel.org,
linux-kernel@vger.kernel.org, libusb-devel@lists.sourceforge.net,
Alexander Graf <agraf@suse.de>, Gerd Hoffmann <kraxel@redhat.com>,
hector@marcansoft.com, Jan Kiszka <jan.kiszka@siemens.com>,
Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
pbonzini@redhat.com, Anthony Liguori <aliguori@us.ibm.com>,
Jes Sorensen <Jes.Sorensen@redhat.com>,
Oliver Neukum <oliver@neukum.org>, Felipe Balbi <balbi@ti.com>,
Clemens Ladisch <clemens@ladisch.de>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Adam Baker <linux@baker-net.org.uk>
Subject: Re: USB mini-summit at LinuxCon Vancouver
Date: Fri, 12 Aug 2011 09:16:00 +0200 [thread overview]
Message-ID: <4E44D330.2040702@redhat.com> (raw)
In-Reply-To: <4E443C6E.8040808@infradead.org>
Hi,
On 08/11/2011 10:32 PM, Mauro Carvalho Chehab wrote:
<snip stuff I agree with>
> instead of using the V4L2 device node to access the stored images, it probably makes
> more sense to use a separate device for that, that will handle a separate set of
> ioctl's, and just use read() to retrieve the image data, after selecting the desired
> image number, via ioctl().
I don't see a lot of added value in doing things this way. We can simply
have a set of new ioctls on the /dev/video# node for this and a new
V4L2_CAP_STILL_IMAGE to indicate the availability of these ioctls. This will keep
the driver a lot simpler then doing 2 separate device nodes for 1 device.
Regards,
Hans
next prev parent reply other threads:[~2011-08-12 7:15 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-10 0:21 USB mini-summit at LinuxCon Vancouver Sarah Sharp
2011-06-10 3:18 ` Greg KH
2011-06-10 6:59 ` Gerd Hoffmann
2011-06-10 19:48 ` Sarah Sharp
2011-06-10 20:50 ` Greg KH
2011-06-13 10:44 ` Alexander Graf
2011-06-13 16:29 ` Greg KH
2011-06-13 17:11 ` Alexander Graf
2011-06-10 7:19 ` Hans de Goede
2011-06-10 7:55 ` Improving kernel -> userspace (usbfs) usb device hand off Hans de Goede
2011-06-10 8:22 ` Felipe Balbi
2011-06-10 8:36 ` Hans de Goede
2011-06-10 8:42 ` Felipe Balbi
2011-06-10 12:19 ` Hans de Goede
2011-06-10 12:28 ` Felipe Balbi
2011-06-10 14:48 ` Alan Stern
2011-06-10 15:07 ` Mauro Carvalho Chehab
2011-06-10 15:21 ` Alan Stern
2011-06-11 9:15 ` Hans de Goede
2011-06-11 16:19 ` Theodore Kilgore
2011-06-12 11:43 ` Hans de Goede
2011-06-12 21:20 ` Theodore Kilgore
2011-06-13 2:03 ` Xiaofan Chen
2011-06-13 2:27 ` [Libusb-devel] " Michael Bender
2011-06-11 16:57 ` Alan Stern
2011-06-10 18:16 ` Theodore Kilgore
2011-06-10 18:34 ` Felipe Balbi
2011-06-10 21:18 ` Alan Stern
2011-06-10 21:46 ` Felipe Balbi
2011-06-10 22:46 ` Theodore Kilgore
2011-06-10 22:43 ` Theodore Kilgore
2011-06-11 1:30 ` Xiaofan Chen
2011-06-11 4:17 ` Theodore Kilgore
2011-06-13 9:05 ` Felipe Balbi
2011-06-13 13:06 ` Mauro Carvalho Chehab
2011-06-13 13:12 ` Felipe Balbi
2011-08-04 22:21 ` USB mini-summit at LinuxCon Vancouver Mauro Carvalho Chehab
2011-08-04 22:56 ` Greg KH
[not found] ` <CAA6KcBBZv7bvVxvEWOYL83igpNZHyzh=bcGxh6Dr5aKsvJK5Cg@mail.gmail.com>
2011-08-05 0:33 ` Mauro Carvalho Chehab
2011-08-05 2:56 ` Theodore Kilgore
2011-08-05 6:57 ` Oliver Neukum
2011-08-05 17:38 ` Theodore Kilgore
2011-08-05 7:45 ` Hans de Goede
2011-08-05 7:59 ` USB mini-summit at LinuxCon Vancouveroliver Oliver Neukum
2011-08-05 8:18 ` Hans de Goede
2011-08-05 13:07 ` USB mini-summit at LinuxCon Vancouver Mauro Carvalho Chehab
2011-08-08 17:58 ` Sarah Sharp
2011-08-08 18:23 ` Theodore Kilgore
2011-08-08 18:32 ` Sarah Sharp
2011-08-08 19:37 ` Mauro Carvalho Chehab
2011-08-09 7:52 ` Hans de Goede
2011-08-09 14:19 ` Alan Stern
2011-08-09 15:03 ` Marko Ristola
2011-08-09 19:57 ` Hans de Goede
2011-08-09 20:31 ` Adam Baker
2011-08-09 20:57 ` Hans de Goede
2011-08-10 2:05 ` Xiaofan Chen
2011-08-10 23:04 ` Adam Baker
2011-08-11 8:14 ` Hans de Goede
2011-08-09 23:05 ` Theodore Kilgore
2011-08-10 14:19 ` Alan Stern
2011-08-10 15:03 ` Theodore Kilgore
2011-08-10 16:09 ` Alan Stern
2011-08-10 18:33 ` Theodore Kilgore
2011-08-10 19:39 ` Hans Verkuil
2011-08-10 19:43 ` Greg KH
2011-08-10 20:34 ` Theodore Kilgore
2011-08-10 20:14 ` Mauro Carvalho Chehab
2011-08-10 20:39 ` Theodore Kilgore
2011-08-11 8:57 ` Jean-Francois Moine
2011-08-11 11:19 ` Mauro Carvalho Chehab
2011-08-11 8:14 ` Hans de Goede
2011-08-11 14:56 ` Alan Stern
2011-08-11 15:13 ` Mauro Carvalho Chehab
2011-08-11 15:25 ` Alan Cox
2011-08-11 15:49 ` Alan Stern
2011-08-11 20:01 ` Theodore Kilgore
2011-08-11 20:32 ` Mauro Carvalho Chehab
2011-08-11 23:13 ` Theodore Kilgore
2011-08-12 7:16 ` Hans de Goede [this message]
2011-08-12 10:11 ` Alan Cox
2011-08-12 1:07 ` Alan Stern
2011-08-12 2:38 ` Theodore Kilgore
2011-08-11 15:44 ` Alan Stern
2011-08-12 7:26 ` Hans de Goede
2011-08-12 15:36 ` Alan Stern
2011-08-09 17:10 ` Sarah Sharp
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