[PATCH v14 11/28] drm/connector: hdmi: Calculate TMDS character rate

Dmitry Baryshkov dmitry.baryshkov at linaro.org
Thu May 23 02:39:46 PDT 2024


On Tue, May 21, 2024 at 12:13:44PM +0200, Maxime Ripard wrote:
> Most HDMI drivers have some code to calculate the TMDS character rate,
> usually to adjust an internal clock to match what the mode requires.
> 
> Since the TMDS character rates mostly depends on the resolution, whether
> we need to repeat pixels or not, the bpc count and the format, we can
> now derive it from the HDMI connector state that stores all those infos
> and remove the duplication from drivers.
> 
> Reviewed-by: Dave Stevenson <dave.stevenson at raspberrypi.com>
> Signed-off-by: Maxime Ripard <mripard at kernel.org>
> ---
>  drivers/gpu/drm/display/drm_hdmi_state_helper.c    | 67 ++++++++++++++++++++++
>  drivers/gpu/drm/drm_atomic.c                       |  1 +
>  drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c |  3 +
>  include/drm/drm_connector.h                        |  5 ++
>  4 files changed, 76 insertions(+)


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

-- 
With best wishes
Dmitry



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