[Intel-gfx] [PATCH 26/58] drm/i915/lvds: implement get_hw_state

[Jesse Barnes]

On Sun, 19 Aug 2012 21:12:43 +0200
Daniel Vetter <daniel.vetter at ffwll.ch> wrote:

> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
>  drivers/gpu/drm/i915/intel_lvds.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
> index 5fc7abc..52f9e7f 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.
>   */
> @@ -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;

Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>

-- 
Jesse Barnes, Intel Open Source Technology Center