On Mon, Jan 18, 2021 at 7:53 AM Thomas Zimmermann <tzimmermann@xxxxxxx> wrote:
>
> Hi
>
> Am 18.01.21 um 02:22 schrieb ZhiJie.Zhang:
> > From: zhangzhijie <zhangzhijie@xxxxxxxxxxx>
> >
> > this callback was used by drm_kms_helper_hotplug_event()
> >
> > V2: (Thanks for Daniel's suggestions)
> > - remove the FIXME below.since with the drm_client
> > - infrastructure and the generic fbdev emulation we've
> > - resolved this all very neatly now.
> >
> > V3: Add comments that This hook is deprecated
> > - new implementation methods instead of this hook
> >
> > Signed-off-by: zhangzhijie <zhangzhijie@xxxxxxxxxxx>
> > Signed-off-by: ZhiJie.Zhang <zhangzhijie@xxxxxxxxxxx>
> > ---
> > include/drm/drm_mode_config.h | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
> > index ab424ddd7665..a084482d579a 100644
> > --- a/include/drm/drm_mode_config.h
> > +++ b/include/drm/drm_mode_config.h
> > @@ -103,14 +103,14 @@ struct drm_mode_config_funcs {
> > * Callback used by helpers to inform the driver of output configuration
> > * changes.
> > *
> > - * Drivers implementing fbdev emulation with the helpers can call
> > - * drm_fb_helper_hotplug_changed from this hook to inform the fbdev
> > + * Drivers implementing fbdev emulation with the helpers. Drivers use
> > + * drm_kms_helper_hotplug_event() to call this hook to inform the fbdev
>
> I don't understand this. Maybe it's "Drivers implementing fbdev
> emulation use drm_kms_helper_hotplug_event() to call ..." ?
Yeah this just doesn't make sense now, this is not the interesting
information. Removing the hint that this should be implemented using
drm_fb_helper_hotplug_changed is really not good.
-Daniel
>
> Best regards
> Thomas
>
> > * helper of output changes.
> > *
> > - * FIXME:
> > - *
> > - * Except that there's no vtable for device-level helper callbacks
> > - * there's no reason this is a core function.
> > + * This hook is deprecated, drivers should instead use
> > + * drm_fbdev_generic_setup() which takes care of any necessary
> > + * hotplug event forwarding already without further involvement by
> > + * the driver.
> > */
> > void (*output_poll_changed)(struct drm_device *dev);
> >
> >
>
> --
> Thomas Zimmermann
> Graphics Driver Developer
> SUSE Software Solutions Germany GmbH
> Maxfeldstr. 5, 90409 Nürnberg, Germany
> (HRB 36809, AG Nürnberg)
> Geschäftsführer: Felix Imendörffer
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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