On Tue, 03 May 2022, Ville Syrjala <[email protected]> wrote:
> From: Ville Syrjälä <[email protected]>
>
> Now that we backfeed the actual DPLL frequency into the
> compute crtc state all our clocks should come out exact.

/me looks at where intel_fuzzy_clock_check() is still used, and it's of
course DSI. Maybe we could move the function there until we figure it
out.

Reviewed-by: Jani Nikula <[email protected]>

>
> Signed-off-by: Ville Syrjälä <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 22 +++++---------------
>  1 file changed, 5 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 198c6340a463..066b9e7a5696 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6118,16 +6118,6 @@ intel_pipe_config_compare(const struct 
> intel_crtc_state *current_config,
>       } \
>  } while (0)
>  
> -#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) do { \
> -     if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) 
> { \
> -             pipe_config_mismatch(fastset, crtc, __stringify(name), \
> -                                  "(expected %i, found %i)", \
> -                                  current_config->name, \
> -                                  pipe_config->name); \
> -             ret = false; \
> -     } \
> -} while (0)
> -
>  #define PIPE_CONF_CHECK_INFOFRAME(name) do { \
>       if (!intel_compare_infoframe(&current_config->infoframes.name, \
>                                    &pipe_config->infoframes.name)) { \
> @@ -6242,7 +6232,7 @@ intel_pipe_config_compare(const struct intel_crtc_state 
> *current_config,
>               PIPE_CONF_CHECK_RECT(pch_pfit.dst);
>  
>               PIPE_CONF_CHECK_I(scaler_state.scaler_id);
> -             PIPE_CONF_CHECK_CLOCK_FUZZY(pixel_rate);
> +             PIPE_CONF_CHECK_I(pixel_rate);
>  
>               PIPE_CONF_CHECK_X(gamma_mode);
>               if (IS_CHERRYVIEW(dev_priv))
> @@ -6312,9 +6302,9 @@ intel_pipe_config_compare(const struct intel_crtc_state 
> *current_config,
>       if (IS_G4X(dev_priv) || DISPLAY_VER(dev_priv) >= 5)
>               PIPE_CONF_CHECK_I(pipe_bpp);
>  
> -     PIPE_CONF_CHECK_CLOCK_FUZZY(hw.pipe_mode.crtc_clock);
> -     PIPE_CONF_CHECK_CLOCK_FUZZY(hw.adjusted_mode.crtc_clock);
> -     PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
> +     PIPE_CONF_CHECK_I(hw.pipe_mode.crtc_clock);
> +     PIPE_CONF_CHECK_I(hw.adjusted_mode.crtc_clock);
> +     PIPE_CONF_CHECK_I(port_clock);
>  
>       PIPE_CONF_CHECK_I(min_voltage_level);
>  
> @@ -6358,7 +6348,6 @@ intel_pipe_config_compare(const struct intel_crtc_state 
> *current_config,
>  #undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
>  #undef PIPE_CONF_CHECK_P
>  #undef PIPE_CONF_CHECK_FLAGS
> -#undef PIPE_CONF_CHECK_CLOCK_FUZZY
>  #undef PIPE_CONF_CHECK_COLOR_LUT
>  #undef PIPE_CONF_CHECK_TIMINGS
>  #undef PIPE_CONF_CHECK_RECT
> @@ -6379,8 +6368,7 @@ static void intel_pipe_config_sanity_check(struct 
> drm_i915_private *dev_priv,
>                * FDI already provided one idea for the dotclock.
>                * Yell if the encoder disagrees.
>                */
> -             drm_WARN(&dev_priv->drm,
> -                      !intel_fuzzy_clock_check(fdi_dotclock, dotclock),
> +             drm_WARN(&dev_priv->drm, fdi_dotclock != dotclock,
>                        "FDI dotclock and encoder dotclock mismatch, fdi: %i, 
> encoder: %i\n",
>                        fdi_dotclock, dotclock);
>       }

-- 
Jani Nikula, Intel Open Source Graphics Center

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