linux-kernel - [PATCHv1 07/14] drm/omap: add support for physical size hints from display drivers

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Message-Id: <20170724173311.27170-8-sebastian.reichel@collabora.co.uk>
Date:   Mon, 24 Jul 2017 19:33:04 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.co.uk>
To:     Sebastian Reichel <sre@...nel.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Tony Lindgren <tony@...mide.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Subject: [PATCHv1 07/14] drm/omap: add support for physical size hints from display drivers

While physical size information is automatically parsed for EDID
based displays, we need to provide it manually for displays providing
one fixed mode.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
---
 drivers/gpu/drm/omapdrm/dss/omapdss.h    | 2 ++
 drivers/gpu/drm/omapdrm/omap_connector.c | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 4e619ff360ae..530365e9c48d 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -560,6 +560,8 @@ struct omap_dss_driver {
 			    struct videomode *vm);
 	void (*get_timings)(struct omap_dss_device *dssdev,
 			    struct videomode *vm);
+	void (*get_size)(struct omap_dss_device *dssdev,
+			 unsigned int *width, unsigned int *height);
 
 	int (*set_wss)(struct omap_dss_device *dssdev, u32 wss);
 	u32 (*get_wss)(struct omap_dss_device *dssdev);
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 5e941305ab1b..b2678105aaf2 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -136,6 +136,12 @@ static int omap_connector_get_modes(struct drm_connector *connector)
 		drm_mode_set_name(mode);
 		drm_mode_probed_add(connector, mode);
 
+		if (dssdrv->get_size) {
+			dssdrv->get_size(dssdev,
+					 &connector->display_info.width_mm,
+					 &connector->display_info.height_mm);
+		}
+
 		n = 1;
 	}
 
-- 
2.13.2