linux-kernel - [PATCH 4/6] drm/imx: support handling bridge timings bus flags

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Date:   Tue,  4 Sep 2018 22:21:11 -0700
From:   Stefan Agner <stefan@...er.ch>
To:     linus.walleij@...aro.org, airlied@...ux.ie, robh+dt@...nel.org,
        mark.rutland@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        p.zabel@...gutronix.de
Cc:     kernel@...gutronix.de, fabio.estevam@....com, linux-imx@....com,
        architt@...eaurora.org, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, gustavo@...ovan.org,
        maarten.lankhorst@...ux.intel.com, sean@...rly.run,
        marcel.ziswiler@...adex.com, max.krummenacher@...adex.com,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Stefan Agner <stefan@...er.ch>
Subject: [PATCH 4/6] drm/imx: support handling bridge timings bus flags

A bridge might require specific settings for the pixel data on
the bus. Copy the bus flags from the bridge timings if a bridge
is in use.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 drivers/gpu/drm/imx/parallel-display.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index aefd04e18f93..ee5840cdb9ab 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -239,6 +239,13 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	if (ret && ret != -ENODEV)
 		return ret;
 
+	if (imxpd->bridge) {
+		const struct drm_bridge_timings *btimings = imxpd->bridge->timings;
+
+		if (btimings)
+			imxpd->bus_flags = btimings->bus_flags;
+	}
+
 	imxpd->dev = dev;
 
 	ret = imx_pd_register(drm, imxpd);
-- 
2.18.0