[PATCH 38/81] drm/i915/lvds: implement get_hw_state

Daniel Vetter
2012-07-11T15:35:59Z

drivers/gpu/drm/i915/intel_lvds.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index e3dd7b3..af78502 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -65,6 +65,32 @@ static struct intel_lvds *intel_attached_lvds(struct drm_connector *connector)
struct intel_lvds, base);
}

+static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 lvds_reg, tmp;
+
+ if (HAS_PCH_SPLIT(dev)) {
+ lvds_reg = PCH_LVDS;
+ } else {
+ lvds_reg = LVDS;
+ }
+
+ tmp = I915_READ(lvds_reg);
+
+ if (!(tmp & LVDS_PORT_EN))
+ return false;
+
+ if (HAS_PCH_CPT(dev))
+ *pipe = PORT_TO_PIPE_CPT(tmp);
+ else
+ *pipe = PORT_TO_PIPE(tmp);
+
+ return true;
+}
+
/**
* Sets the power state for the panel.
*/
@@ -938,6 +964,8 @@ bool intel_lvds_init(struct drm_device *dev)

intel_encoder->enable = intel_enable_lvds;
intel_encoder->disable = intel_disable_lvds;
+ intel_encoder->get_hw_state = intel_lvds_get_hw_state;
+ intel_connector->get_hw_state = intel_connector_get_hw_state;

intel_connector_attach_encoder(intel_connector, intel_encoder);
intel_encoder->type = INTEL_OUTPUT_LVDS;
--
1.7.7.6