drm: rcar-du: crtc: Register GAMMA_LUT properties

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

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 84477d2..fd1116a 100644 (file)
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -1136,6 +1136,7 @@ static const struct drm_crtc_funcs crtc_funcs_gen3 = {
        .set_crc_source = rcar_du_crtc_set_crc_source,
        .verify_crc_source = rcar_du_crtc_verify_crc_source,
        .get_crc_sources = rcar_du_crtc_get_crc_sources,
+       .gamma_set = drm_atomic_helper_legacy_gamma_set,
 };
 
 /* -----------------------------------------------------------------------------
@@ -1259,6 +1260,9 @@ int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
        if (rcdu->cmms[swindex]) {
                rcrtc->cmm = rcdu->cmms[swindex];
                rgrp->cmms_mask |= BIT(hwindex % 2);
+
+               drm_mode_crtc_set_gamma_size(crtc, CM2_LUT_SIZE);
+               drm_crtc_enable_color_mgmt(crtc, 0, false, CM2_LUT_SIZE);
        }
 
        drm_crtc_helper_add(crtc, &crtc_helper_funcs);