linux-kernel - [PATCH v2 19/19] drm: rcar-du: kms: Update CMM in atomic commit tail

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190706140746.29132-20-jacopo+renesas@jmondi.org>
Date:   Sat,  6 Jul 2019 16:07:46 +0200
From:   Jacopo Mondi <jacopo+renesas@...ndi.org>
To:     laurent.pinchart@...asonboard.com,
        kieran.bingham+renesas@...asonboard.com, airlied@...ux.ie,
        daniel@...ll.ch
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        koji.matsuoka.xm@...esas.com, muroya@....co.jp,
        VenkataRajesh.Kalakodima@...bosch.com,
        Harsha.ManjulaMallikarjun@...bosch.com,
        linux-renesas-soc@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 19/19] drm: rcar-du: kms: Update CMM in atomic commit tail

Update CMM settings at in the atomic commit tail helper method.

The CMM is updated with new gamma values provided to the driver
in the GAMMA_LUT blob property.

Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 35 +++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index b79cda2f5531..f9aece78ca5f 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -21,6 +21,7 @@
 #include <linux/of_platform.h>
 #include <linux/wait.h>
 
+#include "rcar_cmm.h"
 #include "rcar_du_crtc.h"
 #include "rcar_du_drv.h"
 #include "rcar_du_encoder.h"
@@ -287,6 +288,37 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
  * Atomic Check and Update
  */
 
+static void rcar_du_atomic_commit_update_cmm(struct drm_crtc *crtc,
+					     struct drm_crtc_state *old_state)
+{
+	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+	struct rcar_cmm_config cmm_config = {};
+
+	if (!rcrtc->cmm || !crtc->state->color_mgmt_changed)
+		return;
+
+	if (!crtc->state->gamma_lut) {
+		cmm_config.lut.enable = false;
+		rcar_cmm_setup(rcrtc->cmm, &cmm_config);
+
+		return;
+	}
+
+	cmm_config.lut.enable = true;
+	cmm_config.lut.table = (struct drm_color_lut *)
+			       crtc->state->gamma_lut->data;
+
+	/* Set LUT table size to 0 if entries should not be updated. */
+	if (!old_state->gamma_lut ||
+	    old_state->gamma_lut->base.id != crtc->state->gamma_lut->base.id)
+		cmm_config.lut.size = crtc->state->gamma_lut->length
+				    / sizeof(cmm_config.lut.table[0]);
+	else
+		cmm_config.lut.size = 0;
+
+	rcar_cmm_setup(rcrtc->cmm, &cmm_config);
+}
+
 static int rcar_du_atomic_check(struct drm_device *dev,
 				struct drm_atomic_state *state)
 {
@@ -329,6 +361,9 @@ static void rcar_du_atomic_commit_tail(struct drm_atomic_state *old_state)
 			rcdu->dpad1_source = rcrtc->index;
 	}
 
+	for_each_old_crtc_in_state(old_state, crtc, crtc_state, i)
+		rcar_du_atomic_commit_update_cmm(crtc, crtc_state);
+
 	/* Apply the atomic update. */
 	drm_atomic_helper_commit_modeset_disables(dev, old_state);
 	drm_atomic_helper_commit_planes(dev, old_state,
-- 
2.21.0