[PATCH 3/7] drm/i915: Set link status property for DP connector

[Jani Nikula]

On Thu, 27 Oct 2016, Manasi Navare <manasi.d.navare at intel.com> wrote:
> This defines a helper function to set the property value.
> This will be used to set the link status to Bad in case
> of link training failures.
>
> Cc: dri-devel at lists.freedesktop.org
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_dp.c  | 16 ++++++++++++++++
>  drivers/gpu/drm/i915/intel_drv.h |  2 ++
>  2 files changed, 18 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 3c2293b..795897c 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -4673,6 +4673,22 @@ static int intel_dp_get_modes(struct drm_connector *connector)
>  	return 0;
>  }
>  
> +int
> +intel_dp_set_link_status_property(struct drm_connector *connector,
> +				  uint64_t val)
> +{
> +	struct drm_device *dev = connector->dev;
> +	int ret = 0;
> +
> +	ret = drm_object_property_set_value(&connector->base,
> +					    dev->mode_config.link_status_property,
> +					    val);
> +	if (ret)
> +		return ret;
> +
> +	return ret;

That's a difficult way to say

	return drm_object_property_set_value(...);

> +}
> +
>  static int
>  intel_dp_connector_register(struct drm_connector *connector)
>  {
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 7dda79d..f6fe05a 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1397,6 +1397,8 @@ u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
>  bool intel_dp_init(struct drm_device *dev, i915_reg_t output_reg, enum port port);
>  bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
>  			     struct intel_connector *intel_connector);
> +int intel_dp_set_link_status_property(struct drm_connector *connector,
> +				      uint64_t val);
>  void intel_dp_set_link_params(struct intel_dp *intel_dp,
>  			      int link_rate, uint8_t lane_count,
>  			      bool link_mst);

-- 
Jani Nikula, Intel Open Source Technology Center