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drm/edid: Extract drm_gtf2_mode() 

Extract the GTF vs. GTF2 logic into a separate function.
We'll have a second user soon.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220927170006.27855-5-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-09-27 20:00:01 +03:00
parent ca2582c66b
commit 86101bb7e0
1 changed files with 30 additions and 17 deletions
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47
drivers/gpu/drm/drm_edid.c
View File

@ -3113,6 +3113,35 @@ static int drm_mode_hsync(const struct drm_display_mode *mode)
return DIV_ROUND_CLOSEST(mode->clock, mode->htotal);
}
static struct drm_display_mode *
drm_gtf2_mode(struct drm_device *dev,
const struct drm_edid *drm_edid,
int hsize, int vsize, int vrefresh_rate)
{
struct drm_display_mode *mode;
/*
* This is potentially wrong if there's ever a monitor with
* more than one ranges section, each claiming a different
* secondary GTF curve. Please don't do that.
*/
mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
if (!mode)
return NULL;
if (drm_mode_hsync(mode) > drm_gtf2_hbreak(drm_edid)) {
drm_mode_destroy(dev, mode);
mode = drm_gtf_mode_complex(dev, hsize, vsize,
vrefresh_rate, 0, 0,
drm_gtf2_m(drm_edid),
drm_gtf2_2c(drm_edid),
drm_gtf2_k(drm_edid),
drm_gtf2_2j(drm_edid));
}
return mode;
}
/*
* Take the standard timing params (in this case width, aspect, and refresh)
* and convert them into a real mode using CVT/GTF/DMT.
@ -3201,23 +3230,7 @@ static struct drm_display_mode *drm_mode_std(struct drm_connector *connector,
mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
break;
case LEVEL_GTF2:
/*
* This is potentially wrong if there's ever a monitor with
* more than one ranges section, each claiming a different
* secondary GTF curve. Please don't do that.
*/
mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
if (!mode)
return NULL;
if (drm_mode_hsync(mode) > drm_gtf2_hbreak(drm_edid)) {
drm_mode_destroy(dev, mode);
mode = drm_gtf_mode_complex(dev, hsize, vsize,
vrefresh_rate, 0, 0,
drm_gtf2_m(drm_edid),
drm_gtf2_2c(drm_edid),
drm_gtf2_k(drm_edid),
drm_gtf2_2j(drm_edid));
}
mode = drm_gtf2_mode(dev, drm_edid, hsize, vsize, vrefresh_rate);
break;
case LEVEL_CVT:
mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0,