[PATCH 39/81] drm/i915/crt: implement get_hw_state

Daniel Vetter
2012-07-11T15:36:01Z

Note that even though this connector is cloneable we still can use the
exact same test to check whether the connector is on or whether the
encoder is enabled - both the dpms code and the encoder disable/enable
frob the exact same hw state.

For dvo/sdvo outputs, this will be different.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_crt.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 7ea986c..0a5b61a 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -61,6 +61,27 @@ static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
return container_of(encoder, struct intel_crt, base);
}

+static bool intel_crt_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;
+ struct intel_crt *crt = intel_encoder_to_crt(encoder);
+ u32 tmp;
+
+ tmp = I915_READ(crt->adpa_reg);
+
+ if (!(tmp & ADPA_DAC_ENABLE))
+ return false;
+
+ if (HAS_PCH_CPT(dev))
+ *pipe = PORT_TO_PIPE_CPT(tmp);
+ else
+ *pipe = PORT_TO_PIPE(tmp);
+
+ return true;
+}
+
static void intel_disable_crt(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
@@ -717,6 +738,8 @@ void intel_crt_init(struct drm_device *dev)

crt->base.disable = intel_disable_crt;
crt->base.enable = intel_enable_crt;
+ crt->base.get_hw_state = intel_crt_get_hw_state;
+ intel_connector->get_hw_state = intel_connector_get_hw_state;

drm_encoder_helper_add(&crt->base.base, &crt_encoder_funcs);
drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
--
1.7.7.6