Re: [PATCH 04/10] drm/atomic: Pass the full state to planes atomic_check

Laurent Pinchart
2021-01-15T20:39:46Z

Hi Maxime,

Thank you for the patch.

On Fri, Jan 15, 2021 at 01:56:56PM +0100, Maxime Ripard wrote:
> The current atomic helpers have either their object state being passed as
> an argument or the full atomic state.
>
> The former is the pattern that was done at first, before switching to the
> latter for new hooks or when it was needed.
>
> Let's start convert all the remaining helpers to provide a consistent

s/start convert/convert/ ?

> interface, starting with the planes atomic_check.
>
> The conversion was done using the coccinelle script below plus some
> manual changes for vmwgfx, built tested on all the drivers.
>
> @@
> identifier plane, plane_state;
> symbol state;
> @@
>
> struct drm_plane_helper_funcs {
> ...
> int (*atomic_check)(struct drm_plane *plane,
> - struct drm_plane_state *plane_state);
> + struct drm_atomic_state *state);
> ...
> }
>
> @ plane_atomic_func @
> identifier helpers;
> identifier func;
> @@
>
> static const struct drm_plane_helper_funcs helpers = {
> ...,
> .atomic_check = func,
> ...,
> };
>
> @@
> struct drm_plane_helper_funcs *FUNCS;
> identifier f;
> identifier dev;
> identifier plane, plane_state, state;
> @@
>
> f(struct drm_device *dev, struct drm_atomic_state *state)
> {
> <+...
> - FUNCS->atomic_check(plane, plane_state)
> + FUNCS->atomic_check(plane, state)
> ...+>
> }
>
> @@
> identifier plane_atomic_func.func;
> identifier plane;
> symbol state;
> @@
>
> func(struct drm_plane *plane,
> - struct drm_plane_state *state)
> + struct drm_plane_state *new_plane_state)
> {
> <...
> - state
> + new_plane_state
> ...>
> }
>

Is this needed, or is it a leftover from 02/10 ?

> @ ignores_new_state @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
>
> func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
> {
> ... when != new_plane_state
> }
>
> @ adds_new_state depends on plane_atomic_func && !ignores_new_state @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
>
> func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
> {
> + struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
> ...
> }
>
> @ depends on plane_atomic_func @
> identifier plane_atomic_func.func;
> identifier plane, new_plane_state;
> @@
>
> func(struct drm_plane *plane,
> - struct drm_plane_state *new_plane_state
> + struct drm_atomic_state *state
> )
> { ... }
>
> @ 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>
> ---

[snip]

> drivers/gpu/drm/drm_atomic_helper.c | 2 +-
> drivers/gpu/drm/drm_simple_kms_helper.c | 4 +++-
> drivers/gpu/drm/omapdrm/omap_plane.c | 4 +++-
> drivers/gpu/drm/rcar-du/rcar_du_plane.c | 4 +++-
> drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 5 ++++-
> drivers/gpu/drm/xlnx/zynqmp_disp.c | 4 +++-

For these,

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

[snip]

--
Regards,

Laurent Pinchart