linux-kernel - [PATCH] drm/mxsfb: Make supported modifiers explicit

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Date:   Mon, 23 Mar 2020 15:52:46 +0100
From:   Guido Günther <agx@...xcpu.org>
To:     Marek Vasut <marex@...x.de>, Stefan Agner <stefan@...er.ch>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/mxsfb: Make supported modifiers explicit

In contrast to other display controllers on imx like DCSS and ipuv3
lcdif/mxsfb does not support detiling e.g. vivante tiled layouts.
Since mesa might assume otherwise make it explicit that only
DRM_FORMAT_MOD_LINEAR is supported.

Signed-off-by: Guido Günther <agx@...xcpu.org>
---
 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 762379530928..fc71e7a7a02e 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -73,6 +73,11 @@ static const uint32_t mxsfb_formats[] = {
 	DRM_FORMAT_RGB565
 };
 
+static const uint64_t mxsfb_modifiers[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_INVALID
+};
+
 static struct mxsfb_drm_private *
 drm_pipe_to_mxsfb_drm_private(struct drm_simple_display_pipe *pipe)
 {
@@ -334,8 +339,8 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
 	}
 
 	ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs,
-			mxsfb_formats, ARRAY_SIZE(mxsfb_formats), NULL,
-			mxsfb->connector);
+			mxsfb_formats, ARRAY_SIZE(mxsfb_formats),
+			mxsfb_modifiers, mxsfb->connector);
 	if (ret < 0) {
 		dev_err(drm->dev, "Cannot setup simple display pipe\n");
 		goto err_vblank;
-- 
2.23.0