drm: Add acquire ctx to ->gamma_set hook

Atomic helpers really want this instead of the hacked-up legacy
backoff trick, which unfortunately prevents drivers from using their
own private drm_modeset_locks.

Aside: There's a few atomic drivers (nv50, vc4, soon vmwgfx) which
don't yet use the new atomic color mgmt/gamma table stuff. Would be
nice if they could switch over and just hook up
drm_atomic_helper_legacy_gamma_set() instead.

Cc: Dave Airlie <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: Christian König <[email protected]>
Cc: Gerd Hoffmann <[email protected]>
Cc: Ben Skeggs <[email protected]>
Cc: Sinclair Yeh <[email protected]>
Cc: Thomas Hellstrom <[email protected]>
Cc: Eric Anholt <[email protected]>
Reviewed-by: Maarten Lankhorst <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Reviewed-by: Sinclair Yeh <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 47b78e52691c..aaef0a652f10 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -645,7 +645,8 @@ static void ast_crtc_reset(struct drm_crtc *crtc)
 }
 
 static int ast_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
-			      u16 *blue, uint32_t size)
+			      u16 *blue, uint32_t size,
+			      struct drm_modeset_acquire_ctx *ctx)
 {
 	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
 	int i;