Re: [PATCH 2/3] drm/i915: Remove atomic.pre_disable_primary.

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Op 03-02-16 om 17:07 schreef Ville Syrjälä:
> On Wed, Feb 03, 2016 at 04:53:24PM +0100, Maarten Lankhorst wrote:
>> This can be derived from the atomic state in pre_plane_update,
>> which makes it more clear when it's supposed to be called.
>>
>> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@xxxxxxxxx>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> ---
>>  drivers/gpu/drm/i915/intel_display.c | 25 +++++++++++++++++++------
>>  drivers/gpu/drm/i915/intel_drv.h     |  1 -
>>  2 files changed, 19 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>> index de94ef165fbe..c7f2a18ab34e 100644
>> --- a/drivers/gpu/drm/i915/intel_display.c
>> +++ b/drivers/gpu/drm/i915/intel_display.c
>> @@ -4807,19 +4807,33 @@ static void intel_post_plane_update(struct intel_crtc *crtc)
>>  	memset(atomic, 0, sizeof(*atomic));
>>  }
>>  
>> -static void intel_pre_plane_update(struct intel_crtc *crtc)
>> +static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
>>  {
>> +	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
>>  	struct drm_device *dev = crtc->base.dev;
>>  	struct drm_i915_private *dev_priv = dev->dev_private;
>>  	struct intel_crtc_atomic_commit *atomic = &crtc->atomic;
>>  	struct intel_crtc_state *pipe_config =
>>  		to_intel_crtc_state(crtc->base.state);
>> +	struct drm_atomic_state *old_state = old_crtc_state->base.state;
>> +	struct drm_plane *primary = crtc->base.primary;
>> +	struct drm_plane_state *old_pri_state =
>> +		drm_atomic_get_existing_plane_state(old_state, primary);
>> +	bool modeset = needs_modeset(&pipe_config->base);
>>  
>>  	if (atomic->update_fbc)
>>  		intel_fbc_pre_update(crtc);
>>  
>> -	if (atomic->pre_disable_primary)
>> -		intel_pre_disable_primary(&crtc->base);
>> +	if (old_pri_state) {
> When might we not have and old state for the primary plane?
>
When updating some state unrelated to the primary plane, for example changing cursor.

modeset and update_pipe should always add all planes.

~Maarten
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