Re: [PATCH 16/16] drm/i915/intel_dp: Add support for forcing ultrajoiner

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Mon, Sep 23, 2024 at 11:43:36PM +0530, Ankit Nautiyal wrote:
> Allow forcing ultrajoiner through debugfs.
> 
> v2: Minor refactoring of switch case logic. (Ville)
> 
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_display_debugfs.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> index af164e340cb3..01ddebc61944 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
> @@ -1331,6 +1331,7 @@ static ssize_t i915_joiner_write(struct file *file,
>  {
>  	struct seq_file *m = file->private_data;
>  	struct intel_connector *connector = m->private;
> +	struct drm_i915_private *i915 = to_i915(connector->base.dev);
>  	int force_joined_pipes = 0;
>  	int ret;
>  
> @@ -1349,6 +1350,13 @@ static ssize_t i915_joiner_write(struct file *file,
>  	case 2:
>  		connector->force_joined_pipes = force_joined_pipes;
>  		break;
> +	case 4:
> +		if (HAS_ULTRAJOINER(i915)) {
> +			connector->force_joined_pipes = force_joined_pipes;
> +			break;
> +		}
> +
> +		fallthrough;
>  	default:
>  		return -EINVAL;
>  	}
> -- 
> 2.45.2

-- 
Ville Syrjälä
Intel