From 86ef615fa11b57ac44ee895136f05712ea905a39 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 22 Oct 2018 17:19:53 +0300 Subject: [PATCH] drm/i915: Fix the VLV/CHV DSI panel orientation hw readout MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Let's make sure the DSI port is actually on before we go poking at the plane register to determine which way it's rotated. Otherwise we could be looking at a plane that is feeding a HDMI port for instance. And in order to read the plane register we need the power well to be on. Make sure that is indeed the case. We'll also make sure the plane is actually enabled before we trust the rotation bit to tell us the truth. v2: s/intel_dsi/vlv_dsi/ Cc: Hans de Goede Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20181022141953.3889-1-ville.syrjala@linux.intel.com Tested-by: Hans de Goede Reviewed-by: Maarten Lankhorst #irc --- drivers/gpu/drm/i915/vlv_dsi.c | 56 ++++++++++++++++++++++++++-------- 1 file changed, 43 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/vlv_dsi.c b/drivers/gpu/drm/i915/vlv_dsi.c index bab87b62bc2d..f1eedc974dbc 100644 --- a/drivers/gpu/drm/i915/vlv_dsi.c +++ b/drivers/gpu/drm/i915/vlv_dsi.c @@ -1566,27 +1566,57 @@ static const struct drm_connector_funcs intel_dsi_connector_funcs = { .atomic_duplicate_state = intel_digital_connector_duplicate_state, }; -static int intel_dsi_get_panel_orientation(struct intel_connector *connector) +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); - int orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL; - enum i9xx_plane_id i9xx_plane; + 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; + enum pipe pipe; u32 val; - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - if (connector->encoder->crtc_mask == BIT(PIPE_B)) - i9xx_plane = PLANE_B; - else - i9xx_plane = PLANE_A; + if (!encoder->get_hw_state(encoder, &pipe)) + return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; - val = I915_READ(DSPCNTR(i9xx_plane)); - if (val & DISPPLANE_ROTATE_180) - orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP; - } + crtc = intel_get_crtc_for_pipe(dev_priv, pipe); + plane = to_intel_plane(crtc->base.primary); + + power_domain = POWER_DOMAIN_PIPE(pipe); + if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) + 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); 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 DRM_MODE_PANEL_ORIENTATION_NORMAL; +} + static void intel_dsi_add_properties(struct intel_connector *connector) { struct drm_i915_private *dev_priv = to_i915(connector->base.dev); @@ -1604,7 +1634,7 @@ static void intel_dsi_add_properties(struct intel_connector *connector) connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; connector->base.display_info.panel_orientation = - intel_dsi_get_panel_orientation(connector); + vlv_dsi_get_panel_orientation(connector); drm_connector_init_panel_orientation_property( &connector->base, connector->panel.fixed_mode->hdisplay, -- 2.30.2