Re: [Intel-gfx] [PATCH 4/4] drm/i915/display: Move squash_ctl register programming to its own function

[Jani Nikula <jani.nikula@linux.intel.com>]

On Thu, 20 Oct 2022, Anusha Srivatsa <anusha.srivatsa@intel.com> wrote:
> No functional change. Introduce dg2_cdclk_squash_programming and
> move squash_ctl register programming bits to this.
>
> Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_cdclk.c | 23 +++++++++++++---------
>  1 file changed, 14 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
> index 8701796788e3..b692186c8f02 100644
> --- a/drivers/gpu/drm/i915/display/intel_cdclk.c
> +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
> @@ -1705,6 +1705,18 @@ static void bxt_cdclk_pll(struct drm_i915_private *i915, int vco)
>  
>  }
>  
> +static void dg2_cdclk_squash_programming(struct drm_i915_private *i915,
> +					 u16 waveform)

Function names that are verbs should preferrably use the imperative
mood, i.e. program() instead of programmed(), programs() or
programming().

I'm also not sure "programming" or "program" is a very descriptive
thing; almost everything here is about "programming" something or other.

BR,
Jani.


> +{
> +	u32 squash_ctl = 0;
> +
> +	if (waveform)
> +		squash_ctl = CDCLK_SQUASH_ENABLE |
> +			     CDCLK_SQUASH_WINDOW_SIZE(0xf) | waveform;
> +
> +	intel_de_write(i915, CDCLK_SQUASH_CTL, squash_ctl);
> +}
> +
>  static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
>  			  const struct intel_cdclk_config *cdclk_config,
>  			  enum pipe pipe)
> @@ -1752,15 +1764,8 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
>  	else
>  		clock = cdclk;
>  
> -	if (HAS_CDCLK_SQUASH(dev_priv)) {
> -		u32 squash_ctl = 0;
> -
> -		if (waveform)
> -			squash_ctl = CDCLK_SQUASH_ENABLE |
> -				CDCLK_SQUASH_WINDOW_SIZE(0xf) | waveform;
> -
> -		intel_de_write(dev_priv, CDCLK_SQUASH_CTL, squash_ctl);
> -	}
> +	if (HAS_CDCLK_SQUASH(dev_priv))
> +		dg2_cdclk_squash_programming(dev_priv, waveform);
>  
>  	val = bxt_cdclk_cd2x_div_sel(dev_priv, clock, vco) |
>  		bxt_cdclk_cd2x_pipe(dev_priv, pipe) |

-- 
Jani Nikula, Intel Open Source Graphics Center