[PATCH 19/20] drm: rcar-du: crtc: Register GAMMA_LUT properties

[Jacopo Mondi]

Enable the GAMMA_LUT KMS property using the framework helpers to
register the proeprty and the associated gamma table size maximum size.

Signed-off-by: Jacopo Mondi <jacopo+renesas at jmondi.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index e6d3df37c827..c920fb5dba65 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -1207,6 +1207,9 @@ int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
 	    rcdu->cmms[swindex]) {
 		rcrtc->cmm = rcdu->cmms[swindex];
 		rgrp->cmms_mask |= BIT(hwindex % 2);
+
+		drm_mode_crtc_set_gamma_size(crtc, CMM_GAMMA_LUT_SIZE);
+		drm_crtc_enable_color_mgmt(crtc, 0, false, CMM_GAMMA_LUT_SIZE);
 	}
 
 	drm_crtc_helper_add(crtc, &crtc_helper_funcs);
-- 
2.21.0