Add support to inform the DRM subsystem about the orientation
the display has been mounted to the casing.

Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.co.uk>
---
 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c 
b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
index 15399a1a666b..7a63d6775a27 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
@@ -68,6 +68,7 @@ struct panel_drv_data {
 
        int width_mm;
        int height_mm;
+       int orientation;
 
        struct omap_dsi_pin_config pin_config;
 
@@ -1198,6 +1199,14 @@ static void dsicm_get_size(struct omap_dss_device 
*dssdev,
        *height = ddata->height_mm;
 }
 
+static void dsicm_get_orientation(struct omap_dss_device *dssdev,
+                                 int *orientation)
+{
+       struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+       *orientation = ddata->orientation;
+}
+
 static struct omap_dss_driver dsicm_ops = {
        .connect        = dsicm_connect,
        .disconnect     = dsicm_disconnect,
@@ -1211,6 +1220,7 @@ static struct omap_dss_driver dsicm_ops = {
        .get_timings    = dsicm_get_timings,
        .check_timings  = dsicm_check_timings,
        .get_size       = dsicm_get_size,
+       .get_orientation = dsicm_get_orientation,
 
        .enable_te      = dsicm_enable_te,
        .get_te         = dsicm_get_te,
@@ -1259,6 +1269,9 @@ static int dsicm_probe_of(struct platform_device *pdev)
        ddata->height_mm = 0;
        of_property_read_u32(node, "height-mm", &ddata->height_mm);
 
+       ddata->orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+       of_property_read_u32(node, "orientation", &ddata->orientation);
+
        in = omapdss_of_find_source_for_first_ep(node);
        if (IS_ERR(in)) {
                dev_err(&pdev->dev, "failed to find video source\n");
-- 
2.15.1

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