linux-kernel - Re: [RFC][PATCH 4/5] drm/i915: Introduce scaling filter related registers and bit fields.

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Date:   Tue, 10 Mar 2020 18:08:25 +0200
From:   Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:     Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@...el.com>
Cc:     jani.nikula@...ux.intel.com, daniel@...ll.ch,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        airlied@...ux.ie, maarten.lankhorst@...ux.intel.com,
        tzimmermann@...e.de, mripard@...nel.org, mihail.atanassov@....com,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        linux-kernel@...r.kernel.org, ankit.k.nautiyal@...el.com
Subject: Re: [RFC][PATCH 4/5] drm/i915: Introduce scaling filter related
 registers and bit fields.

On Tue, Feb 25, 2020 at 12:35:44PM +0530, Pankaj Bharadiya wrote:
> Introduce scaler registers and bit fields needed to configure the
> scaling filter in prgrammed mode and configure scaling filter
> coefficients.
> 
> Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@...el.com>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@...el.com>
> ---
>  drivers/gpu/drm/i915/i915_reg.h | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 34923b1c284c..bba4ad3be611 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -7289,6 +7289,18 @@ enum {
>  #define _PS_ECC_STAT_2B     0x68AD0
>  #define _PS_ECC_STAT_1C     0x691D0
>  
> +#define _PS_COEF_SET0_INDEX_1A     0x68198
> +#define _PS_COEF_SET0_INDEX_2A     0x68298
> +#define _PS_COEF_SET0_INDEX_1B     0x68998
> +#define _PS_COEF_SET0_INDEX_2B     0x68A98
> +
> +#define _PS_COEF_SET0_DATA_1A     0x6819C
> +#define _PS_COEF_SET0_DATA_2A     0x6829C
> +#define _PS_COEF_SET0_DATA_1B     0x6899C
> +#define _PS_COEF_SET0_DATA_2B     0x68A9C
> +

Sourious whitespace.

> +#define _PS_COEE_INDEX_AUTO_INC (1 << 10)

Wrong indentation (though looks like most scaler register
definitions get that wrong already), and the leading '_' shouldn't
be here at all.

> +
>  #define _ID(id, a, b) _PICK_EVEN(id, a, b)
>  #define SKL_PS_CTRL(pipe, id) _MMIO_PIPE(pipe,        \
>  			_ID(id, _PS_1A_CTRL, _PS_2A_CTRL),       \
> @@ -7318,6 +7330,14 @@ enum {
>  			_ID(id, _PS_ECC_STAT_1A, _PS_ECC_STAT_2A),   \
>  			_ID(id, _PS_ECC_STAT_1B, _PS_ECC_STAT_2B))
>  
> +#define SKL_PS_COEF_INDEX_SET0(pipe, id)  _MMIO_PIPE(pipe,    \
> +			_ID(id, _PS_COEF_SET0_INDEX_1A, _PS_COEF_SET0_INDEX_2A), \
> +			_ID(id, _PS_COEF_SET0_INDEX_1B, _PS_COEF_SET0_INDEX_2B))
> +
> +#define SKL_PS_COEF_DATA_SET0(pipe, id)  _MMIO_PIPE(pipe,     \
> +			_ID(id, _PS_COEF_SET0_DATA_1A, _PS_COEF_SET0_DATA_2A), \
> +			_ID(id, _PS_COEF_SET0_DATA_1B, _PS_COEF_SET0_DATA_2B))

Please parametrize by 'set' as well.

> +
>  /* legacy palette */
>  #define _LGC_PALETTE_A           0x4a000
>  #define _LGC_PALETTE_B           0x4a800
> -- 
> 2.23.0

-- 
Ville Syrjälä
Intel