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Subject[PATCHv3 6/8] drm/omap: add support for rotation hints from display drivers
Date
This adds support for setting DRM panel orientation property
based on rotation information from the display driver.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
---
drivers/gpu/drm/omapdrm/dss/omapdss.h | 2 ++
drivers/gpu/drm/omapdrm/omap_connector.c | 34 +++++++++++++++++++++++++++++++-
2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 14d74adb13fb..01a2a6638f70 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -554,6 +554,8 @@ struct omap_dss_driver {
struct videomode *vm);
void (*get_size)(struct omap_dss_device *dssdev,
unsigned int *width, unsigned int *height);
+ void (*get_rotation)(struct omap_dss_device *dssdev,
+ int *rotation);

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 a33b51484b2d..f8ae8bdf9211 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -249,6 +249,8 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
struct drm_connector *connector = NULL;
struct omap_connector *omap_connector;
bool hpd_supported = false;
+ int rotation = -1;
+ int ret;

DBG("%s", dssdev->name);

@@ -267,7 +269,7 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
drm_connector_helper_add(connector, &omap_connector_helper_funcs);

if (dssdev->driver->register_hpd_cb) {
- int ret = dssdev->driver->register_hpd_cb(dssdev,
+ ret = dssdev->driver->register_hpd_cb(dssdev,
omap_connector_hpd_cb,
omap_connector);
if (!ret)
@@ -288,6 +290,36 @@ struct drm_connector *omap_connector_init(struct drm_device *dev,
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;

+ if (dssdev->driver->get_rotation)
+ dssdev->driver->get_rotation(dssdev, &rotation);
+
+ switch (rotation) {
+ case 0:
+ connector->display_info.panel_orientation =
+ DRM_MODE_PANEL_ORIENTATION_NORMAL;
+ break;
+ case 90:
+ connector->display_info.panel_orientation =
+ DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
+ break;
+ case 180:
+ connector->display_info.panel_orientation =
+ DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
+ break;
+ case 270:
+ connector->display_info.panel_orientation =
+ DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
+ break;
+ default:
+ connector->display_info.panel_orientation =
+ DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+ break;
+ }
+
+ ret = drm_connector_init_panel_orientation_property(connector, 0, 0);
+ if (ret)
+ DBG("%s: Failed to init orientation property (%d)", dssdev->name, ret);
+
return connector;

fail:
--
2.16.2
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