linux-kernel - Re: [PATCH v3 00/24] i.MX Media Driver

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Message-ID: <20170131010653.GR27312@n2100.armlinux.org.uk>
Date:   Tue, 31 Jan 2017 01:06:53 +0000
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Steve Longerbeam <slongerbeam@...il.com>
Cc:     mark.rutland@....com, andrew-ct.chen@...iatek.com,
        minghsiu.tsai@...iatek.com, nick@...anahar.org,
        songjun.wu@...rochip.com, hverkuil@...all.nl,
        Steve Longerbeam <steve_longerbeam@...tor.com>,
        robert.jarzmik@...e.fr, devel@...verdev.osuosl.org,
        markus.heiser@...marIT.de,
        laurent.pinchart+renesas@...asonboard.com, geert@...ux-m68k.org,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        kernel@...gutronix.de, arnd@...db.de, mchehab@...nel.org,
        bparrot@...com, robh+dt@...nel.org, horms+renesas@...ge.net.au,
        tiffany.lin@...iatek.com, linux-arm-kernel@...ts.infradead.org,
        niklas.soderlund+renesas@...natech.se, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, jean-christophe.trotin@...com,
        p.zabel@...gutronix.de, fabio.estevam@....com, shawnguo@...nel.org,
        sudipm.mukherjee@...il.com
Subject: Re: [PATCH v3 00/24] i.MX Media Driver

On Tue, Jan 31, 2017 at 12:45:11AM +0000, Russell King - ARM Linux wrote:
> Trying this driver with an imx219 camera (which works with Philipp's
> driver) results in not much happening... no /dev/media* node for it,
> no subdevs, no nothing.  No clues as to what's missing either.  Only
> messages from imx-media are from registering the various subdevs.

Another issue:

imx_csi                 5491  4
imx_camif              11654  4
imx_ic                 23961  8
imx_smfc                6639  4
imx_media              23308  1 imx_csi
imx_mipi_csi2           5544  1
imx_media_common       12701  6 imx_csi,imx_smfc,imx_media,imx_mipi_csi2,imx_camif,imx_ic
imx219                 21205  2

So how does one remove any of these modules, say, while developing a
camera driver?  Having to reboot to test an update makes it painfully
slow for testing.

Philipp's driver can do this (once the unload bugs are fixed, which I
have patches for).

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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