drm/i915: add encoder get_config function v5
We can use this for fetching encoder specific pipe_config state, like
mode flags, adjusted clock, etc.
Just used for mode flags atm, so we can check the pipe config state at
mode set time.
v2: get_config when checking hw state too
v3: fix DVO and LVDS mode flags (Ville)
get SDVO DTD for flag fetch (Ville)
v4: use input timings (Ville)
correct command used (Ville)
remove gen4 check (Ville)
v5: get DDI flag config too
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v4)
Tested-by: Paulo Zanoni <przanoni@gmail.com> (the new hsw ddi stuff)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 36fe291..6554860 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -86,6 +86,31 @@
return true;
}
+static void intel_lvds_get_config(struct intel_encoder *encoder,
+ struct intel_crtc_config *pipe_config)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 lvds_reg, tmp, flags = 0;
+
+ if (HAS_PCH_SPLIT(dev))
+ lvds_reg = PCH_LVDS;
+ else
+ lvds_reg = LVDS;
+
+ tmp = I915_READ(lvds_reg);
+ if (tmp & LVDS_HSYNC_POLARITY)
+ flags |= DRM_MODE_FLAG_NHSYNC;
+ else
+ flags |= DRM_MODE_FLAG_PHSYNC;
+ if (tmp & LVDS_VSYNC_POLARITY)
+ flags |= DRM_MODE_FLAG_NVSYNC;
+ else
+ flags |= DRM_MODE_FLAG_PVSYNC;
+
+ pipe_config->adjusted_mode.flags |= flags;
+}
+
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
* This is an exception to the general rule that mode_set doesn't turn
* things on.
@@ -921,6 +946,7 @@
intel_encoder->compute_config = intel_lvds_compute_config;
intel_encoder->disable = intel_disable_lvds;
intel_encoder->get_hw_state = intel_lvds_get_hw_state;
+ intel_encoder->get_config = intel_lvds_get_config;
intel_connector->get_hw_state = intel_connector_get_hw_state;
intel_connector_attach_encoder(intel_connector, intel_encoder);