Re: [Intel-gfx] [PATCH 04/11] drm/edid: Define more flags

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

On Sat, 27 Aug 2022, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> Replace a bunch of hex constants with proper definitions.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

> ---
>  drivers/gpu/drm/drm_edid.c | 18 +++++++++---------
>  include/drm/drm_edid.h     | 14 +++++++++-----
>  2 files changed, 18 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 4355d73632c3..856d304a1354 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -2984,7 +2984,7 @@ is_rb(const struct detailed_timing *descriptor, void *data)
>  	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.cvt.flags) != 15);
>  
>  	if (descriptor->data.other_data.data.range.flags == DRM_EDID_CVT_SUPPORT_FLAG &&
> -	    descriptor->data.other_data.data.range.formula.cvt.flags & 0x10)
> +	    descriptor->data.other_data.data.range.formula.cvt.flags & DRM_EDID_CVT_FLAGS_REDUCED_BLANKING)
>  		*res = true;
>  }
>  
> @@ -3012,7 +3012,7 @@ find_gtf2(const struct detailed_timing *descriptor, void *data)
>  
>  	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.flags) != 10);
>  
> -	if (descriptor->data.other_data.data.range.flags == 0x02)
> +	if (descriptor->data.other_data.data.range.flags == DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG)
>  		*res = descriptor;
>  }
>  
> @@ -3415,7 +3415,7 @@ range_pixel_clock(const struct edid *edid, const u8 *t)
>  		return 0;
>  
>  	/* 1.4 with CVT support gives us real precision, yay */
> -	if (edid->revision >= 4 && t[10] == 0x04)
> +	if (edid->revision >= 4 && t[10] == DRM_EDID_CVT_SUPPORT_FLAG)
>  		return (t[9] * 10000) - ((t[12] >> 2) * 250);
>  
>  	/* 1.3 is pathetic, so fuzz up a bit */
> @@ -3441,7 +3441,7 @@ static bool mode_in_range(const struct drm_display_mode *mode,
>  			return false;
>  
>  	/* 1.4 max horizontal check */
> -	if (edid->revision >= 4 && t[10] == 0x04)
> +	if (edid->revision >= 4 && t[10] == DRM_EDID_CVT_SUPPORT_FLAG)
>  		if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3))))
>  			return false;
>  
> @@ -3581,13 +3581,13 @@ do_inferred_modes(const struct detailed_timing *timing, void *c)
>  		return; /* GTF not defined yet */
>  
>  	switch (range->flags) {
> -	case 0x02: /* secondary gtf, XXX could do more */
> -	case 0x00: /* default gtf */
> +	case DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG: /* XXX could do more */
> +	case DRM_EDID_DEFAULT_GTF_SUPPORT_FLAG:
>  		closure->modes += drm_gtf_modes_for_range(closure->connector,
>  							  closure->drm_edid,
>  							  timing);
>  		break;
> -	case 0x04: /* cvt, only in 1.4+ */
> +	case DRM_EDID_CVT_SUPPORT_FLAG:
>  		if (!version_greater(closure->drm_edid, 1, 3))
>  			break;
>  
> @@ -3595,7 +3595,7 @@ do_inferred_modes(const struct detailed_timing *timing, void *c)
>  							  closure->drm_edid,
>  							  timing);
>  		break;
> -	case 0x01: /* just the ranges, no formula */
> +	case DRM_EDID_RANGE_LIMITS_ONLY_FLAG:
>  	default:
>  		break;
>  	}
> @@ -6393,7 +6393,7 @@ static int _drm_edid_connector_update(struct drm_connector *connector,
>  	num_modes += add_cea_modes(connector, drm_edid);
>  	num_modes += add_alternate_cea_modes(connector, drm_edid);
>  	num_modes += add_displayid_detailed_modes(connector, drm_edid);
> -	if (drm_edid->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)
> +	if (drm_edid->edid->features & DRM_EDID_FEATURE_CONTINUOUS_FREQ)
>  		num_modes += add_inferred_modes(connector, drm_edid);
>  
>  	if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
> index 1ed61e2b30a4..429735b91f63 100644
> --- a/include/drm/drm_edid.h
> +++ b/include/drm/drm_edid.h
> @@ -97,10 +97,13 @@ struct detailed_data_string {
>  #define DRM_EDID_RANGE_OFFSET_MIN_HFREQ (1 << 2) /* 1.4 */
>  #define DRM_EDID_RANGE_OFFSET_MAX_HFREQ (1 << 3) /* 1.4 */
>  
> -#define DRM_EDID_DEFAULT_GTF_SUPPORT_FLAG   0x00
> -#define DRM_EDID_RANGE_LIMITS_ONLY_FLAG     0x01
> -#define DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG 0x02
> -#define DRM_EDID_CVT_SUPPORT_FLAG           0x04
> +#define DRM_EDID_DEFAULT_GTF_SUPPORT_FLAG   0x00 /* 1.3 */
> +#define DRM_EDID_RANGE_LIMITS_ONLY_FLAG     0x01 /* 1.4 */
> +#define DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG 0x02 /* 1.3 */
> +#define DRM_EDID_CVT_SUPPORT_FLAG           0x04 /* 1.4 */
> +
> +#define DRM_EDID_CVT_FLAGS_STANDARD_BLANKING (1 << 3)
> +#define DRM_EDID_CVT_FLAGS_REDUCED_BLANKING  (1 << 4)
>  
>  struct detailed_data_monitor_range {
>  	u8 min_vfreq;
> @@ -206,7 +209,8 @@ struct detailed_timing {
>  #define DRM_EDID_DIGITAL_TYPE_DP       (5 << 0) /* 1.4 */
>  #define DRM_EDID_DIGITAL_DFP_1_X       (1 << 0) /* 1.3 */
>  
> -#define DRM_EDID_FEATURE_DEFAULT_GTF      (1 << 0)
> +#define DRM_EDID_FEATURE_DEFAULT_GTF      (1 << 0) /* 1.2 */
> +#define DRM_EDID_FEATURE_CONTINUOUS_FREQ  (1 << 0) /* 1.4 */
>  #define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1)
>  #define DRM_EDID_FEATURE_STANDARD_COLOR   (1 << 2)
>  /* If analog */

-- 
Jani Nikula, Intel Open Source Graphics Center