Commit 82daca297506 ("drm/i915: Add "panel orientation" property to the
panel connector, v6.") uses hardware state readback to determine if the
GOP is rotating the image by 180 degrees to compensate for upside-down
mounted panels.
When I wrote that commit I tried to find the VBT bits the GOP used to
decide to rotate the image, but I could not find them. Back then I only
looked at the rotation bits in struct mipi_config and these read 0 on
the 1 BYT device I have with an upside-down mounted panel
(a GP-electronic T701 tablet). While working on a similar problem on a
BYT device with an eDP panel I noticed that the new
intel_dsi_get_panel_orientation() helper which gets used on newer
SoCs (Apollo-Lake, etc.) checks the rotate_180 bit in the
BDB_GENERAL_FEATURES VBT block.
I've checked and this bit indeed is set on the GP-electronic T701 tablet,
so using the generic intel_dsi_get_panel_orientation() helper there does
the right thing without needing any extra readback of hw state.
This commit removes the special handling of the panel orientation for
DSI panels on BYT/CHT devices, bringing the handling in line with the
handling of DSI panels on other devices.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/gpu/drm/i915/display/vlv_dsi.c | 55 +-------------------------
1 file changed, 1 insertion(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index 0ca49b1604c6..18f7616e6c27 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1563,59 +1563,6 @@ static const struct drm_connector_funcs intel_dsi_connector_funcs = {
.atomic_duplicate_state = intel_digital_connector_duplicate_state,
};
-static enum drm_panel_orientation
-vlv_dsi_get_hw_panel_orientation(struct intel_connector *connector)
-{
- struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
- struct intel_encoder *encoder = connector->encoder;
- enum intel_display_power_domain power_domain;
- enum drm_panel_orientation orientation;
- struct intel_plane *plane;
- struct intel_crtc *crtc;
- intel_wakeref_t wakeref;
- enum pipe pipe;
- u32 val;
-
- if (!encoder->get_hw_state(encoder, &pipe))
- return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
-
- crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
- plane = to_intel_plane(crtc->base.primary);
-
- power_domain = POWER_DOMAIN_PIPE(pipe);
- wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
- if (!wakeref)
- return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
-
- val = I915_READ(DSPCNTR(plane->i9xx_plane));
-
- if (!(val & DISPLAY_PLANE_ENABLE))
- orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
- else if (val & DISPPLANE_ROTATE_180)
- orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
- else
- orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL;
-
- intel_display_power_put(dev_priv, power_domain, wakeref);
-
- return orientation;
-}
-
-static enum drm_panel_orientation
-vlv_dsi_get_panel_orientation(struct intel_connector *connector)
-{
- struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
- enum drm_panel_orientation orientation;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- orientation = vlv_dsi_get_hw_panel_orientation(connector);
- if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
- return orientation;
- }
-
- return intel_dsi_get_panel_orientation(connector);
-}
-
static void vlv_dsi_add_properties(struct intel_connector *connector)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
@@ -1633,7 +1580,7 @@ static void vlv_dsi_add_properties(struct intel_connector *connector)
connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT;
connector->base.display_info.panel_orientation =
- vlv_dsi_get_panel_orientation(connector);
+ intel_dsi_get_panel_orientation(connector);
drm_connector_init_panel_orientation_property(
&connector->base,
connector->panel.fixed_mode->hdisplay,
--
2.23.0
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