From patchwork Tue Apr 2 20:20:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Shankar, Uma" X-Patchwork-Id: 10882237 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 D0F41139A for ; Tue, 2 Apr 2019 19:55:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BCF8F2871F for ; Tue, 2 Apr 2019 19:55:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B14AF28721; Tue, 2 Apr 2019 19:55:07 +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 F103C288D8 for ; Tue, 2 Apr 2019 19:55:06 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 364F66E4D5; Tue, 2 Apr 2019 19:55:05 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id D77DB6E4D3; Tue, 2 Apr 2019 19:55:02 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Apr 2019 12:55:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,301,1549958400"; d="scan'208";a="157619128" Received: from linuxpresi1-desktop.iind.intel.com ([10.223.74.121]) by fmsmga002.fm.intel.com with ESMTP; 02 Apr 2019 12:54:59 -0700 From: Uma Shankar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [v7 3/9] drm: Enable HDR infoframe support Date: Wed, 3 Apr 2019 01:50:24 +0530 Message-Id: <1554236430-7466-4-git-send-email-uma.shankar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1554236430-7466-1-git-send-email-uma.shankar@intel.com> References: <1554236430-7466-1-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: dcastagna@chromium.org, emil.l.velikov@gmail.com, Uma Shankar , seanpaul@chromium.org, ville.syrjala@intel.com, maarten.lankhorst@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Enable Dynamic Range and Mastering Infoframe for HDR content, which is defined in CEA 861.3 spec. The metadata will be computed based on blending policy in userspace compositors and passed as a connector property blob to driver. The same will be sent as infoframe to panel which support HDR. Added the const version of infoframe for DRM metadata for HDR. v2: Rebase and added Ville's POC changes. v3: No Change v4: Addressed Shashank's review comments and merged the patch making drm infoframe function arguments as constant. v5: Rebase v6: Fixed checkpatch warnings with --strict option. Addressed Shashank's review comments and added his RB. v7: Addressed Brian Starkey's review comments. Merged 2 patches into one. Signed-off-by: Uma Shankar Signed-off-by: Ville Syrjälä Reviewed-by: Shashank Sharma --- drivers/gpu/drm/drm_edid.c | 51 +++++++++++++ drivers/video/hdmi.c | 186 +++++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_edid.h | 5 ++ include/linux/hdmi.h | 27 +++++++ 4 files changed, 269 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index ffcca81..51945f6 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4882,6 +4882,57 @@ static bool is_hdmi2_sink(struct drm_connector *connector) } /** + * drm_hdmi_infoframe_set_hdr_metadata() - fill an HDMI AVI infoframe with + * HDR metadata from userspace + * @frame: HDMI AVI infoframe + * @hdr_source_metadata: hdr_source_metadata info from userspace + * + * Return: 0 on success or a negative error code on failure. + */ +int +drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame, + struct hdr_output_metadata *hdr_metadata) +{ + struct hdr_output_metadata *hdr_output_metadata; + int err; + + if (!frame || !hdr_metadata) + return true; + + err = hdmi_drm_infoframe_init(frame); + if (err < 0) + return err; + + DRM_DEBUG_KMS("type = %x\n", frame->type); + + hdr_output_metadata = (struct hdr_output_metadata *)hdr_metadata; + + frame->length = sizeof(struct hdr_static_metadata); + + frame->eotf = hdr_output_metadata->hdmi_type1.eotf; + frame->metadata_type = hdr_output_metadata->hdmi_type1.metadata_type; + + memcpy(&frame->display_primaries, + &hdr_output_metadata->hdmi_type1.display_primaries, 12); + + memcpy(&frame->white_point, + &hdr_output_metadata->hdmi_type1.white_point, 4); + + frame->max_mastering_display_luminance = + hdr_output_metadata->hdmi_type1.max_cll; + frame->min_mastering_display_luminance = + hdr_output_metadata->hdmi_type1.min_cll; + frame->max_fall = hdr_output_metadata->hdmi_type1.max_fall; + frame->max_cll = hdr_output_metadata->hdmi_type1.max_cll; + + hdmi_infoframe_log(KERN_CRIT, NULL, + (union hdmi_infoframe *)frame); + + return 0; +} +EXPORT_SYMBOL(drm_hdmi_infoframe_set_hdr_metadata); + +/** * drm_hdmi_avi_infoframe_from_display_mode() - fill an HDMI AVI infoframe with * data from a DRM display mode * @frame: HDMI AVI infoframe diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 799ae49..133a3c3 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -650,6 +650,146 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, return 0; } +/** + * hdmi_drm_infoframe_init() - initialize an HDMI Dynaminc Range and + * mastering infoframe + * @frame: HDMI DRM infoframe + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame) +{ + memset(frame, 0, sizeof(*frame)); + + frame->type = HDMI_INFOFRAME_TYPE_DRM; + frame->version = 1; + + return 0; +} +EXPORT_SYMBOL(hdmi_drm_infoframe_init); + +static int hdmi_drm_infoframe_check_only(const struct hdmi_drm_infoframe *frame) +{ + if (frame->type != HDMI_INFOFRAME_TYPE_DRM || + frame->version != 1) + return -EINVAL; + + return 0; +} + +/** + * hdmi_drm_infoframe_check() - check a HDMI DRM infoframe + * @frame: HDMI DRM infoframe + * + * Validates that the infoframe is consistent. + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame) +{ + return hdmi_drm_infoframe_check_only(frame); +} +EXPORT_SYMBOL(hdmi_drm_infoframe_check); + +/** + * hdmi_drm_infoframe_pack() - write HDMI DRM infoframe to binary buffer + * @frame: HDMI DRM infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame, + void *buffer, size_t size) +{ + u8 *ptr = buffer; + size_t length; + int i; + + length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; + + if (size < length) + return -ENOSPC; + + memset(buffer, 0, size); + + ptr[0] = frame->type; + ptr[1] = frame->version; + ptr[2] = frame->length; + ptr[3] = 0; /* checksum */ + + /* start infoframe payload */ + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + *ptr++ = frame->eotf; + *ptr++ = frame->metadata_type; + + for (i = 0; i < 3; i++) { + *ptr++ = frame->display_primaries[i].x; + *ptr++ = frame->display_primaries[i].x >> 8; + *ptr++ = frame->display_primaries[i].y; + *ptr++ = frame->display_primaries[i].y >> 8; + } + + *ptr++ = frame->white_point.x; + *ptr++ = frame->white_point.x >> 8; + + *ptr++ = frame->white_point.y; + *ptr++ = frame->white_point.y >> 8; + + *ptr++ = frame->max_mastering_display_luminance; + *ptr++ = frame->max_mastering_display_luminance >> 8; + + *ptr++ = frame->min_mastering_display_luminance; + *ptr++ = frame->min_mastering_display_luminance >> 8; + + *ptr++ = frame->max_cll; + *ptr++ = frame->max_cll >> 8; + + *ptr++ = frame->max_fall; + *ptr++ = frame->max_fall >> 8; + + hdmi_infoframe_set_checksum(buffer, length); + + return length; +} +EXPORT_SYMBOL(hdmi_drm_infoframe_pack_only); + +/** + * hdmi_drm_infoframe_pack() - check a HDMI DRM infoframe, + * and write it to binary buffer + * @frame: HDMI DRM infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Validates that the infoframe is consistent and updates derived fields + * (eg. length) based on other fields, after which it packs the information + * contained in the @frame structure into a binary representation that + * can be written into the corresponding controller registers. This function + * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, + void *buffer, size_t size) +{ + int ret; + + ret = hdmi_drm_infoframe_check(frame); + if (ret) + return ret; + + return hdmi_drm_infoframe_pack_only(frame, buffer, size); +} +EXPORT_SYMBOL(hdmi_drm_infoframe_pack); + /* * hdmi_vendor_any_infoframe_check() - check a vendor infoframe */ @@ -758,6 +898,10 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, length = hdmi_avi_infoframe_pack_only(&frame->avi, buffer, size); break; + case HDMI_INFOFRAME_TYPE_DRM: + length = hdmi_drm_infoframe_pack_only(&frame->drm, + buffer, size); + break; case HDMI_INFOFRAME_TYPE_SPD: length = hdmi_spd_infoframe_pack_only(&frame->spd, buffer, size); @@ -806,6 +950,9 @@ ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, case HDMI_INFOFRAME_TYPE_AVI: length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); break; + case HDMI_INFOFRAME_TYPE_DRM: + length = hdmi_drm_infoframe_pack(&frame->drm, buffer, size); + break; case HDMI_INFOFRAME_TYPE_SPD: length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); break; @@ -838,6 +985,8 @@ static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type) return "Source Product Description (SPD)"; case HDMI_INFOFRAME_TYPE_AUDIO: return "Audio"; + case HDMI_INFOFRAME_TYPE_DRM: + return "Dynamic Range and Mastering"; } return "Reserved"; } @@ -1284,6 +1433,40 @@ static void hdmi_audio_infoframe_log(const char *level, frame->downmix_inhibit ? "Yes" : "No"); } +/** + * hdmi_drm_infoframe_log() - log info of HDMI DRM infoframe + * @level: logging level + * @dev: device + * @frame: HDMI DRM infoframe + */ +static void hdmi_drm_infoframe_log(const char *level, + struct device *dev, + const struct hdmi_drm_infoframe *frame) +{ + int i; + + hdmi_infoframe_log_header(level, dev, + (struct hdmi_any_infoframe *)frame); + hdmi_log("length: %d\n", frame->length); + hdmi_log("metadata type: %d\n", frame->metadata_type); + hdmi_log("eotf: %d\n", frame->eotf); + for (i = 0; i < 3; i++) { + hdmi_log("x[%d]: %d\n", i, frame->display_primaries[i].x); + hdmi_log("y[%d]: %d\n", i, frame->display_primaries[i].y); + } + + hdmi_log("white point x: %d\n", frame->white_point.x); + hdmi_log("white point y: %d\n", frame->white_point.y); + + hdmi_log("max_mastering_display_luminance: %d\n", + frame->max_mastering_display_luminance); + hdmi_log("min_mastering_display_luminance: %d\n", + frame->min_mastering_display_luminance); + + hdmi_log("max_cll: %d\n", frame->max_cll); + hdmi_log("max_fall: %d\n", frame->max_fall); +} + static const char * hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct) { @@ -1372,6 +1555,9 @@ void hdmi_infoframe_log(const char *level, case HDMI_INFOFRAME_TYPE_VENDOR: hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor); break; + case HDMI_INFOFRAME_TYPE_DRM: + hdmi_drm_infoframe_log(level, dev, &frame->drm); + break; } } EXPORT_SYMBOL(hdmi_infoframe_log); diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 9d3b5b9..d81c5c2 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -25,6 +25,7 @@ #include #include +#include struct drm_device; struct i2c_adapter; @@ -370,6 +371,10 @@ int drm_av_sync_delay(struct drm_connector *connector, const struct drm_display_mode *mode, enum hdmi_quantization_range rgb_quant_range); +int +drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame, + struct hdr_output_metadata *hdr_metadata); + /** * drm_eld_mnl - Get ELD monitor name length in bytes. * @eld: pointer to an eld memory structure with mnl set diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index a065194..a23c5e7 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -47,6 +47,7 @@ enum hdmi_infoframe_type { HDMI_INFOFRAME_TYPE_AVI = 0x82, HDMI_INFOFRAME_TYPE_SPD = 0x83, HDMI_INFOFRAME_TYPE_AUDIO = 0x84, + HDMI_INFOFRAME_TYPE_DRM = 0x87, }; #define HDMI_IEEE_OUI 0x000c03 @@ -185,12 +186,37 @@ struct hdmi_avi_infoframe { unsigned short right_bar; }; +/* DRM Infoframe as per CTA 861.G spec */ +struct hdmi_drm_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + enum hdmi_eotf eotf; + enum hdmi_metadata_type metadata_type; + struct { + u16 x, y; + } display_primaries[3]; + struct { + u16 x, y; + } white_point; + u16 max_mastering_display_luminance; + u16 min_mastering_display_luminance; + u16 max_cll; + u16 max_fall; +}; + int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame); ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame, void *buffer, size_t size); int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame); +int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame); +ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, void *buffer, + size_t size); +ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame, + void *buffer, size_t size); +int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame); enum hdmi_spd_sdi { HDMI_SPD_SDI_UNKNOWN, @@ -365,6 +391,7 @@ ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *fram struct hdmi_spd_infoframe spd; union hdmi_vendor_any_infoframe vendor; struct hdmi_audio_infoframe audio; + struct hdmi_drm_infoframe drm; }; ssize_t hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer,