[PATCH v6 07/15] drm/atomic: Create function to insert colorop state into a commit

[Maxime Ripard <mripard@kernel.org>]

drm_atomic_get_colorop_state() allocates a new colorop state by
duplicating the current one and inserts it into the atomic commit as
a single operation.

However, a later change will need to insert a colorop state into a
commit without going through the full allocation and duplication path
in drm_atomic_get_colorop_state().

Extract the state insertion logic into a new static
drm_atomic_commit_set_colorop_state() helper, and convert
drm_atomic_get_colorop_state() to use it.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
 drivers/gpu/drm/drm_atomic.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b26458ee98d8..807b575ecc54 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -705,4 +705,19 @@ drm_atomic_get_plane_state(struct drm_atomic_commit *state,
 EXPORT_SYMBOL(drm_atomic_get_plane_state);
 
+static void drm_atomic_commit_set_colorop_state(struct drm_atomic_commit *commit,
+						struct drm_colorop *colorop,
+						struct drm_colorop_state *colorop_state)
+{
+	int index = drm_colorop_index(colorop);
+
+	drm_modeset_lock_assert_held(&colorop->plane->mutex);
+
+	commit->colorops[index].state_to_destroy = colorop_state;
+	commit->colorops[index].old_state = colorop->state;
+	commit->colorops[index].new_state = colorop_state;
+	commit->colorops[index].ptr = colorop;
+	colorop_state->state = commit;
+}
+
 /**
  * drm_atomic_get_colorop_state - get colorop state
@@ -724,5 +739,5 @@ drm_atomic_get_colorop_state(struct drm_atomic_commit *state,
 			     struct drm_colorop *colorop)
 {
-	int ret, index = drm_colorop_index(colorop);
+	int ret;
 	struct drm_colorop_state *colorop_state;
 
@@ -741,9 +756,5 @@ drm_atomic_get_colorop_state(struct drm_atomic_commit *state,
 		return ERR_PTR(-ENOMEM);
 
-	state->colorops[index].state_to_destroy = colorop_state;
-	state->colorops[index].ptr = colorop;
-	state->colorops[index].old_state = colorop->state;
-	state->colorops[index].new_state = colorop_state;
-	colorop_state->state = state;
+	drm_atomic_commit_set_colorop_state(state, colorop, colorop_state);
 
 	drm_dbg_atomic(colorop->dev, "Added [COLOROP:%d:%d] %p state to %p\n",

-- 
2.55.0