On Thu, 04 Apr 2019, Vandita Kulkarni <vandita.kulka...@intel.com> wrote:
> In case of dual link mode, the mode clock that we get
> from the VBT is halved.
>
> Signed-off-by: Vandita Kulkarni <vandita.kulka...@intel.com>
> ---
> drivers/gpu/drm/i915/icl_dsi.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
> index 69cd6b2..c77960f 100644
> --- a/drivers/gpu/drm/i915/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/icl_dsi.c
> @@ -1255,11 +1255,18 @@ static void gen11_dsi_get_config(struct intel_encoder
> *encoder,
> {
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
> + int crtc_clock;
>
> /* FIXME: adapt icl_ddi_clock_get() for DSI and use that? */
> pipe_config->port_clock =
> cnl_calc_wrpll_link(dev_priv, &pipe_config->dpll_hw_state);
> - pipe_config->base.adjusted_mode.crtc_clock = intel_dsi->pclk;
> +
> + if (intel_dsi->dual_link)
> + crtc_clock = intel_dsi->pclk * 2;
> + else
> + crtc_clock = intel_dsi->pclk;
> +
> + pipe_config->base.adjusted_mode.crtc_clock = crtc_clock;
I'd do this with simply:
if (intel_dsi->dual_link)
pipe_config->base.adjusted_mode.crtc_clock *= 2;
BR,
Jani.
> gen11_dsi_get_timings(encoder, pipe_config);
> pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
> pipe_config->pipe_bpp = mipi_dsi_pixel_format_to_bpp
--
Jani Nikula, Intel Open Source Graphics Center
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