[PATCH v6 00/24] Associate ddc adapters with connectors
Sam Ravnborg
sam at ravnborg.org
Fri Jul 26 18:35:20 UTC 2019
Hi Andezej.
On Fri, Jul 26, 2019 at 07:22:54PM +0200, Andrzej Pietrasiewicz wrote:
> It is difficult for a user to know which of the i2c adapters is for which
> drm connector. This series addresses this problem.
>
> The idea is to have a symbolic link in connector's sysfs directory, e.g.:
>
> ls -l /sys/class/drm/card0-HDMI-A-1/ddc
> lrwxrwxrwx 1 root root 0 Jun 24 10:42 /sys/class/drm/card0-HDMI-A-1/ddc \
> -> ../../../../soc/13880000.i2c/i2c-2
>
> The user then knows that their card0-HDMI-A-1 uses i2c-2 and can e.g. run
> ddcutil:
>
> ddcutil -b 2 getvcp 0x10
> VCP code 0x10 (Brightness): current value = 90, max value = 100
>
> The first patch in the series adds struct i2c_adapter pointer to struct
> drm_connector. If the field is used by a particular driver, then an
> appropriate symbolic link is created by the generic code, which is also added
> by this patch.
>
> Patch 2 adds a new variant of drm_connector_init(), see the changelog
> below.
>
> Patches 3..24 are examples of how to convert a driver to this new scheme.
>
...
>
> v5..v6:
>
> - improved subject line of patch 1
> - added kernel-doc for drm_connector_init_with_ddc()
> - improved kernel-doc for the ddc field of struct drm_connector
> - added Reviewed-by in patches 17 and 18
> - added Acked-by in patch 2
> - made the ownership of ddc i2c_adapter explicit in all patches,
> this made the affected patches much simpler
Looks good now.
Patch 1 and 2 are:
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
The remaining patches are:
Acked-by: Sam Ravnborg <sam at ravnborg.org>
Sam
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