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From: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Airlie <airlied@linux.ie>,
	dri-devel@lists.freedesktop.org,
	linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Subject: [PATCH 1/3] drm: rcar-du: Update Gen3 output limitations
Date: Fri, 31 Aug 2018 19:12:57 +0100	[thread overview]
Message-ID: <20180831181259.29529-2-kieran.bingham+renesas@ideasonboard.com> (raw)
In-Reply-To: <20180831181259.29529-1-kieran.bingham+renesas@ideasonboard.com>

The R-Car Gen3 DU utilises the VSP1 hardware for memory access. The
limits on the RPF and WPF in this pipeline are 8190x8190.

Update the supported maximum sizes accordingly.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index ed7fa3204892..7c7aff8cdf77 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -512,12 +512,22 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 
 	dev->mode_config.min_width = 0;
 	dev->mode_config.min_height = 0;
-	dev->mode_config.max_width = 4095;
-	dev->mode_config.max_height = 2047;
 	dev->mode_config.normalize_zpos = true;
 	dev->mode_config.funcs = &rcar_du_mode_config_funcs;
 	dev->mode_config.helper_private = &rcar_du_mode_config_helper;
 
+	if (rcdu->info->gen < 3) {
+		dev->mode_config.max_width = 4095;
+		dev->mode_config.max_height = 2047;
+	} else {
+		/*
+		 * The Gen3 DU uses the VSP1 for memory access, and is limited
+		 * to frame sizes of 8190x8190.
+		 */
+		dev->mode_config.max_width = 8190;
+		dev->mode_config.max_height = 8190;
+	}
+
 	rcdu->num_crtcs = hweight8(rcdu->info->channels_mask);
 
 	ret = rcar_du_properties_init(rcdu);
-- 
2.17.1


  reply	other threads:[~2018-08-31 18:13 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-31 18:12 [PATCH 0/3] drm: rcar-du: Update DU support Kieran Bingham
2018-08-31 18:12 ` Kieran Bingham [this message]
2018-09-14 11:05   ` [PATCH 1/3] drm: rcar-du: Update Gen3 output limitations Laurent Pinchart
2018-08-31 18:12 ` [PATCH 2/3] drm: rcar-du: Add pixel format support Kieran Bingham
2018-09-14 11:11   ` Laurent Pinchart
2018-09-14 13:02     ` Kieran Bingham
2018-09-14 11:17   ` Laurent Pinchart
2018-09-14 13:20     ` Kieran Bingham
2018-08-31 18:12 ` [PATCH 3/3] drm: rcar-du: Update framebuffer pitch and alignment limits for Gen3 Kieran Bingham

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