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drm/i915: Use luminance range calculated during edid parsing

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Instead of using fixed 0 - 512 range use luminance range calculated
as a part of edid parsing. As a backup fall back to static 0 - 512.

v3: Clean-ups suggested by Jani Nikula
v2: Use values calculated during edid parsing

Cc: Lyude Paul <lyude@redhat.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220719095700.14923-4-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2022-07-19 12:57:00 +03:00 committed by Jani Nikula
parent a61bb3422e
commit 3bd86801c8
1 changed files with 13 additions and 2 deletions
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15
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
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@ -278,6 +278,8 @@ intel_dp_aux_hdr_setup_backlight(struct intel_connector *connector, enum pipe pi
{
struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
struct drm_luminance_range_info *luminance_range =
&connector->base.display_info.luminance_range;
int ret;
if (panel->backlight.edp.intel.sdr_uses_aux) {
@ -293,8 +295,17 @@ intel_dp_aux_hdr_setup_backlight(struct intel_connector *connector, enum pipe pi
}
}
panel->backlight.max = 512;
panel->backlight.min = 0;
if (luminance_range->max_luminance) {
panel->backlight.max = luminance_range->max_luminance;
panel->backlight.min = luminance_range->min_luminance;
} else {
panel->backlight.max = 512;
panel->backlight.min = 0;
}
drm_dbg_kms(&i915->drm, "Using backlight range %d..%d\n", panel->backlight.min,
panel->backlight.max);
panel->backlight.level = intel_dp_aux_hdr_get_backlight(connector, pipe);
panel->backlight.enabled = panel->backlight.level != 0;