[Intel-gfx] [PATCH 3/3] drm/i915/icl: Add get_config functionality for dsi

[Ville Syrjälä]

On Tue, Oct 23, 2018 at 04:39:14PM +0530, Vandita Kulkarni wrote:
> From: Madhav Chauhan <madhav.chauhan at intel.com>
> 
> This patch implements the functionality for getting PIPE
> configuration to which DSI encoder is connected. Used during
> the atomic modeset.
> 
> v2: use intel_dsi_bitrate instead of intel_dsi->pclk
> 
> Signed-off-by: Madhav Chauhan <madhav.chauhan at intel.com>
> Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
> ---
>  drivers/gpu/drm/i915/icl_dsi.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
> index d2bb369..6cb3bf8 100644
> --- a/drivers/gpu/drm/i915/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/icl_dsi.c
> @@ -665,3 +665,16 @@ static void __attribute__((unused))
>  	/* step6d: enable dsi transcoder */
>  	gen11_dsi_enable_transcoder(encoder);
>  }
> +
> +static void __attribute__((unused))
> +gen11_dsi_get_config(struct intel_encoder *encoder,
> +				 struct intel_crtc_state *pipe_config)
> +{
> +	struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi,
> +						   base);
> +	u32 pixel_clk;
> +
> +	pixel_clk = intel_dsi_bitrate(intel_dsi);
> +	pipe_config->base.adjusted_mode.crtc_clock = pixel_clk;
> +	pipe_config->port_clock = pixel_clk;

We're supposed to read the state from the hardware here. See how other
DDI encoders do it.

> +}
> -- 
> 1.9.1

-- 
Ville Syrjälä
Intel