On 3/29/2016 12:04 PM, Daniel Vetter wrote:
> On Thu, Mar 24, 2016 at 12:19:32PM +0530, Archit Taneja wrote:
>>
>>
>> On 02/26/2016 03:21 PM, Laurent Pinchart wrote:
>>> Instead of forcing bridges to implement empty callbacks make them all
>>> optional.
>>
>> Acked-by: Archit Taneja <architt at codeaurora.org>
>
> Applied to drm-misc. Still hoping for follow-ups to nuke the now
> redundant dummy funcs.
Only the dw-hdmi bridge driver used such nops. I posted a patch for
that.
Archit
>
> Thanks, Daniel
>
>>
>>>
>>> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at
>>> ideasonboard.com>
>>> ---
>>> drivers/gpu/drm/drm_bridge.c | 12 ++++++++----
>>> include/drm/drm_crtc.h | 8 ++++++++
>>> 2 files changed, 16 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
>>> index bd93453afa61..b3654404abd0 100644
>>> --- a/drivers/gpu/drm/drm_bridge.c
>>> +++ b/drivers/gpu/drm/drm_bridge.c
>>> @@ -186,7 +186,8 @@ void drm_bridge_disable(struct drm_bridge *bridge)
>>>
>>> drm_bridge_disable(bridge->next);
>>>
>>> - bridge->funcs->disable(bridge);
>>> + if (bridge->funcs->disable)
>>> + bridge->funcs->disable(bridge);
>>> }
>>> EXPORT_SYMBOL(drm_bridge_disable);
>>>
>>> @@ -206,7 +207,8 @@ void drm_bridge_post_disable(struct drm_bridge *bridge)
>>> if (!bridge)
>>> return;
>>>
>>> - bridge->funcs->post_disable(bridge);
>>> + if (bridge->funcs->post_disable)
>>> + bridge->funcs->post_disable(bridge);
>>>
>>> drm_bridge_post_disable(bridge->next);
>>> }
>>> @@ -256,7 +258,8 @@ void drm_bridge_pre_enable(struct drm_bridge *bridge)
>>>
>>> drm_bridge_pre_enable(bridge->next);
>>>
>>> - bridge->funcs->pre_enable(bridge);
>>> + if (bridge->funcs->pre_enable)
>>> + bridge->funcs->pre_enable(bridge);
>>> }
>>> EXPORT_SYMBOL(drm_bridge_pre_enable);
>>>
>>> @@ -276,7 +279,8 @@ void drm_bridge_enable(struct drm_bridge *bridge)
>>> if (!bridge)
>>> return;
>>>
>>> - bridge->funcs->enable(bridge);
>>> + if (bridge->funcs->enable)
>>> + bridge->funcs->enable(bridge);
>>>
>>> drm_bridge_enable(bridge->next);
>>> }
>>> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
>>> index 7fad193dc645..fbc225414f01 100644
>>> --- a/include/drm/drm_crtc.h
>>> +++ b/include/drm/drm_crtc.h
>>> @@ -1584,6 +1584,8 @@ struct drm_bridge_funcs {
>>> *
>>> * The bridge can assume that the display pipe (i.e. clocks and timing
>>> * signals) feeding it is still running when this callback is called.
>>> + *
>>> + * The disable callback is optional.
>>> */
>>> void (*disable)(struct drm_bridge *bridge);
>>>
>>> @@ -1600,6 +1602,8 @@ struct drm_bridge_funcs {
>>> * The bridge must assume that the display pipe (i.e. clocks and timing
>>> * singals) feeding it is no longer running when this callback is
>>> * called.
>>> + *
>>> + * The post_disable callback is optional.
>>> */
>>> void (*post_disable)(struct drm_bridge *bridge);
>>>
>>> @@ -1628,6 +1632,8 @@ struct drm_bridge_funcs {
>>> * will not yet be running when this callback is called. The bridge must
>>> * not enable the display link feeding the next bridge in the chain (if
>>> * there is one) when this callback is called.
>>> + *
>>> + * The pre_enable callback is optional.
>>> */
>>> void (*pre_enable)(struct drm_bridge *bridge);
>>>
>>> @@ -1645,6 +1651,8 @@ struct drm_bridge_funcs {
>>> * signals) feeding it is running when this callback is called. This
>>> * callback must enable the display link feeding the next bridge in the
>>> * chain if there is one.
>>> + *
>>> + * The enable callback is optional.
>>> */
>>> void (*enable)(struct drm_bridge *bridge);
>>> };
>>>
>>
>> --
>> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
>> hosted by The Linux Foundation
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
