[Intel-gfx] [PATCH 1/3] drm/i915: Convert intel_tv connector properties to atomic, v3.

[Daniel Vetter]

On Wed, Mar 15, 2017 at 11:08:56AM +0100, Maarten Lankhorst wrote:
> As a proof of concept, first try to convert intel_tv, which is a rarely
> used connector. It has 5 properties, tv format and 4 margins.
> 
> I'm less certain about the state behavior itself, should we pass a size
> parameter to intel_connector_alloc instead, so duplicate_state
> can be done globally if it can be blindly copied?
> 
> Can we also have a atomic_check function for connectors, so the
> crtc_state->connectors_changed can be set there? It would be cleaner
> and more atomic-like.
> 
> To match the legacy behavior, format can be changed by probing just like
> in legacy mode.
> 
> Changes since v1:
> - Add intel_encoder->swap_state to allow updating connector state.
> - Add intel_tv->format for detect_mode and mode_valid, updated on atomic commit.
> Changes since v2:
> - Fix typo in tv_choose_preferred modes function name.
> - Assignment of tv properties is done in core, so intel_tv only needs
>   a atomic_check function. Thanks Ville!
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c |  15 +++
>  drivers/gpu/drm/i915/intel_drv.h     |   4 +
>  drivers/gpu/drm/i915/intel_tv.c      | 200 ++++++++++++++++-------------------
>  3 files changed, 110 insertions(+), 109 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index ac25c9bc8b81..18b7e7546ee1 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -12954,6 +12954,20 @@ static void intel_atomic_track_fbs(struct drm_atomic_state *state)
>  				  to_intel_plane(plane)->frontbuffer_bit);
>  }
>  
> +static void swap_connector_state(struct drm_atomic_state *state)
> +{
> +	struct drm_connector *connector;
> +	struct drm_connector_state *new_conn_state;
> +	int i;
> +
> +	for_each_new_connector_in_state(state, connector, new_conn_state, i) {
> +		struct intel_connector *conn = to_intel_connector(connector);
> +
> +		if (conn->swap_state)
> +			conn->swap_state(conn, new_conn_state);
> +	}
> +}

So yeah I'm late, but this is pretty much exactly what DK's private state
object stuff was meant for. Have you looked into rebasing on top of that?
I think hand-rolling private state stuff everywhere isn't really good.

Afaics DK's patch series is ready for merging into drm-misc, so shouldn't
end up blocking you.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch