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mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from IA0PR11MB7307.namprd11.prod.outlook.com (2603:10b6:208:437::10) by CH3PR11MB7676.namprd11.prod.outlook.com (2603:10b6:610:127::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9632.22; Tue, 24 Feb 2026 02:57:29 +0000 Received: from IA0PR11MB7307.namprd11.prod.outlook.com ([fe80::9d4a:f89:f548:dbc7]) by IA0PR11MB7307.namprd11.prod.outlook.com ([fe80::9d4a:f89:f548:dbc7%6]) with mapi id 15.20.9632.017; Tue, 24 Feb 2026 02:57:29 +0000 Message-ID: <84718850-dab5-462d-97fe-f62c21dcb30d@intel.com> Date: Tue, 24 Feb 2026 08:27:23 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/8] drm/i915/backlight: Short circuit intel_dp_aux_supports_hdr_backlight To: Suraj Kandpal , , CC: References: <20260220050217.2453681-1-suraj.kandpal@intel.com> <20260220050217.2453681-6-suraj.kandpal@intel.com> Content-Language: en-US From: "Murthy, Arun R" In-Reply-To: <20260220050217.2453681-6-suraj.kandpal@intel.com> Content-Type: text/plain; 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This is fine when dealing with eDP 1.4b > and lower. When we are talking about eDP 1.5 it causes confusion in > logs since we need to use VESA AUX backlight functions but this > print causes confusion as to which path code take. > Short circuit this function with a eDP version check. Make sure this > is only called if eDP <= 1.4b > > Signed-off-by: Suraj Kandpal > --- Reviewed-by: Arun R Murthy Thanks and Regards, Arun R Murthy ------------------- > drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c > index a921bb4ccacf..c7143869bafd 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c > +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c > @@ -701,8 +701,8 @@ int intel_dp_aux_init_backlight_funcs(struct intel_connector *connector) > * backlight interface at all. This means that the only sensible way for us to detect both > * interfaces is to probe for Intel's first, and VESA's second. > */ > - if (try_intel_interface && intel_dp_aux_supports_hdr_backlight(connector) && > - intel_dp->edp_dpcd[0] <= DP_EDP_14b) { > + if (try_intel_interface && intel_dp->edp_dpcd[0] <= DP_EDP_14b && > + intel_dp_aux_supports_hdr_backlight(connector)) { > drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Using Intel proprietary eDP backlight controls\n", > connector->base.base.id, connector->base.name); > panel->backlight.funcs = &intel_dp_hdr_bl_funcs;