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drm/i915/lvds: implement get_hw_state 

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Daniel Vetter 2012-07-02 21:09:00 +02:00
parent 9a8ee983e0
commit b1dc332c4d
1 changed files with 28 additions and 0 deletions
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28
drivers/gpu/drm/i915/intel_lvds.c
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@ -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.
*/
@ -937,6 +963,8 @@ 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;