From patchwork Tue Jan 8 09:11:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Shankar, Uma" X-Patchwork-Id: 10751619 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 80D5517D2 for ; Tue, 8 Jan 2019 08:50:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6E6AB287D3 for ; Tue, 8 Jan 2019 08:50:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6006D28B82; Tue, 8 Jan 2019 08:50:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2690B287D3 for ; Tue, 8 Jan 2019 08:50:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 063016E95B; Tue, 8 Jan 2019 08:49:14 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id EE0706E95B; Tue, 8 Jan 2019 08:49:08 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Jan 2019 00:49:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,453,1539673200"; d="scan'208";a="113019115" Received: from linuxpresi1-desktop.iind.intel.com ([10.223.25.28]) by fmsmga007.fm.intel.com with ESMTP; 08 Jan 2019 00:49:06 -0800 From: Uma Shankar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [v4 10/12] drm/i915: Add HLG EOTF Date: Tue, 8 Jan 2019 14:41:25 +0530 Message-Id: <1546938687-27306-11-git-send-email-uma.shankar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546938687-27306-1-git-send-email-uma.shankar@intel.com> References: <1546938687-27306-1-git-send-email-uma.shankar@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ville.syrjala@intel.com, emil.l.velikov@gmail.com, Uma Shankar , maarten.lankhorst@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Ville Syrjälä ADD HLG EOTF to the list of EOTF transfer functions supported. Hybrid Log-Gamma (HLG) is a high dynamic range (HDR) standard. HLG defines a nonlinear transfer function in which the lower half of the signal values use a gamma curve and the upper half of the signal values use a logarithmic curve. v2: Rebase v3: Fixed a warning message v4: Addressed Shashank's review comments Signed-off-by: Ville Syrjälä Signed-off-by: Uma Shankar --- drivers/gpu/drm/drm_edid.c | 4 ++-- include/linux/hdmi.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index df27012..5592c9b 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3850,8 +3850,8 @@ static uint8_t eotf_supported(const u8 *edid_ext) return edid_ext[2] & (BIT(HDMI_EOTF_TRADITIONAL_GAMMA_SDR) | BIT(HDMI_EOTF_TRADITIONAL_GAMMA_HDR) | - BIT(HDMI_EOTF_SMPTE_ST2084)); - + BIT(HDMI_EOTF_SMPTE_ST2084) | + BIT(HDMI_EOTF_BT_2100_HLG)); } static uint8_t hdr_metadata_type(const u8 *edid_ext) diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index ce00e1e..b5346c3 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -146,6 +146,7 @@ enum hdmi_eotf { HDMI_EOTF_TRADITIONAL_GAMMA_SDR, HDMI_EOTF_TRADITIONAL_GAMMA_HDR, HDMI_EOTF_SMPTE_ST2084, + HDMI_EOTF_BT_2100_HLG, }; struct hdmi_avi_infoframe {