Re: [PATCH v2 10/11] drm: Use state helper instead of the plane state pointer

Ville Syrjälä
2021-01-26T13:37:48Z

On Thu, Jan 21, 2021 at 05:35:35PM +0100, Maxime Ripard wrote:
> Many drivers reference the plane->state pointer in order to get the
> current plane state in their atomic_update or atomic_disable hooks,
> which would be the new plane state in the global atomic state since
> _swap_state happened when those hooks are run.
>
> Use the drm_atomic_get_new_plane_state helper to get that state to make it
> more obvious.
>
> This was made using the coccinelle script below:
>
> @ plane_atomic_func @
> identifier helpers;
> identifier func;
> @@
>
> (
> static const struct drm_plane_helper_funcs helpers = {
> ...,
> .atomic_disable = func,
> ...,
> };
> |
> static const struct drm_plane_helper_funcs helpers = {
> ...,
> .atomic_update = func,
> ...,
> };
> )
>
> @ adds_new_state @
> identifier plane_atomic_func.func;
> identifier plane, state;
> identifier new_state;
> @@
>
> func(struct drm_plane *plane, struct drm_atomic_state *state)
> {
> ...
> - struct drm_plane_state *new_state = plane->state;
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
> ...
> }
>
> @ include depends on adds_new_state @
> @@
>
> #include <drm/drm_atomic.h>
>
> @ no_include depends on !include && adds_new_state @
> @@
>
> + #include <drm/drm_atomic.h>
> #include <drm/...>
>
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Looks great.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

--
Ville Syrjälä
Intel