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12 Dec 2020 23:10:36 -0800 Received: from bgsmsx601.gar.corp.intel.com (10.109.78.80) by fmsmsx606.amr.corp.intel.com (10.18.126.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sat, 12 Dec 2020 23:10:35 -0800 Received: from bgsmsx604.gar.corp.intel.com (10.67.234.6) by BGSMSX601.gar.corp.intel.com (10.109.78.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sun, 13 Dec 2020 12:40:33 +0530 Received: from bgsmsx604.gar.corp.intel.com ([10.67.234.6]) by BGSMSX604.gar.corp.intel.com ([10.67.234.6]) with mapi id 15.01.1713.004; Sun, 13 Dec 2020 12:40:33 +0530 From: "Shankar, Uma" To: "Nautiyal, Ankit K" , "intel-gfx@lists.freedesktop.org" Thread-Topic: [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion Thread-Index: AQHWzTfnjYeyk30AfUC/Fs7RQhTAHqn0oHHw Date: Sun, 13 Dec 2020 07:10:33 +0000 Message-ID: <84fd6863339d4737a67decd2a9787a23@intel.com> References: <20201208075145.17389-1-ankit.k.nautiyal@intel.com> <20201208075145.17389-8-ankit.k.nautiyal@intel.com> In-Reply-To: <20201208075145.17389-8-ankit.k.nautiyal@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 x-originating-ip: [10.223.10.1] MIME-Version: 1.0 Subject: Re: [Intel-gfx] [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "airlied@linux.ie" , "dri-devel@lists.freedesktop.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" > -----Original Message----- > From: Nautiyal, Ankit K > Sent: Tuesday, December 8, 2020 1:22 PM > To: intel-gfx@lists.freedesktop.org > Cc: dri-devel@lists.freedesktop.org; Shankar, Uma ; > airlied@linux.ie; jani.nikula@linux.intel.com; ville.syrjala@linux.intel.com; > Kulkarni, Vandita ; Sharma, Swati2 > > Subject: [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB- > YCbCr Conversion > > DP Specification for DP2.0 to HDMI2.1 Pcon specifies support for conversion of > colorspace from RGB to YCbCr. > https://groups.vesa.org/wg/DP/document/previewpdf/15651 > > This patch adds the relavant registers and helper functions to get the capability > and set the color conversion bits for rgb->ycbcr conversion through PCON. > > Signed-off-by: Ankit Nautiyal > --- > drivers/gpu/drm/drm_dp_helper.c | 59 +++++++++++++++++++++++++++++++++ > include/drm/drm_dp_helper.h | 10 +++++- > 2 files changed, 68 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c > b/drivers/gpu/drm/drm_dp_helper.c index d0626f57f99c..344662d5c295 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -949,6 +949,35 @@ bool > drm_dp_downstream_444_to_420_conversion(const u8 > dpcd[DP_RECEIVER_CAP_SIZE] } > EXPORT_SYMBOL(drm_dp_downstream_444_to_420_conversion); > > +/** > + * drm_dp_downstream_rgb_to_ycbcr_conversion() - determine downstream > facing port > + * RGB->YCbCr conversion capability > + * @dpcd: DisplayPort configuration data > + * @port_cap: downstream facing port capabilities > + * > + * Returns: whether the downstream facing port can convert RGB->YCbCr > +*/ bool drm_dp_downstream_rgb_to_ycbcr_conversion(const u8 > +dpcd[DP_RECEIVER_CAP_SIZE], > + const u8 port_cap[4]) > +{ > + if (!drm_dp_is_branch(dpcd)) > + return false; > + > + if (dpcd[DP_DPCD_REV] < 0x13) > + return false; > + > + switch (port_cap[0] & DP_DS_PORT_TYPE_MASK) { > + case DP_DS_PORT_TYPE_HDMI: > + if ((dpcd[DP_DOWNSTREAMPORT_PRESENT] & > DP_DETAILED_CAP_INFO_AVAILABLE) == 0) > + return false; > + > + return port_cap[3] & DP_DS_HDMI_BT601_RGB_YCBCR_CONV; I guess there are other conversions also possible, like BT709 and 2020. Update those as well here. > + default: > + return false; > + } > +} > +EXPORT_SYMBOL(drm_dp_downstream_rgb_to_ycbcr_conversion); > + > /** > * drm_dp_downstream_mode() - return a mode for downstream facing port > * @dev: DRM device > @@ -3140,3 +3169,33 @@ int drm_dp_pcon_pps_override_param(struct > drm_dp_aux *aux, u8 pps_param[6]) > return 0; > } > EXPORT_SYMBOL(drm_dp_pcon_pps_override_param); > + > +/* > + * drm_dp_pcon_convert_rgb_to_ycbcr() - Configure the PCon to convert > +RGB to Ycbcr > + * @aux: displayPort AUX channel > + * @color_spc: Color space conversion type > + * > + * Returns 0 on success, else returns negative error code. > + */ > +int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 > +color_spc) { > + int ret; > + u8 buf; > + > + if (color_spc != DP_CONVERSION_BT601_RGB_YCBCR_ENABLE || > + color_spc != DP_CONVERSION_BT709_RGB_YCBCR_ENABLE || > + color_spc != DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE) > + return -EINVAL; Yeah this is wrong, fix it. > + > + ret = drm_dp_dpcd_readb(aux, DP_PROTOCOL_CONVERTER_CONTROL_2, > &buf); > + if (ret < 0) > + return ret; > + > + buf |= color_spc; > + ret = drm_dp_dpcd_writeb(aux, > DP_PROTOCOL_CONVERTER_CONTROL_2, buf); > + if (ret < 0) > + return ret; > + > + return 0; > +} > +EXPORT_SYMBOL(drm_dp_pcon_convert_rgb_to_ycbcr); > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index > 347b4e1a55b4..1b3d54ed7a78 100644 > --- a/include/drm/drm_dp_helper.h > +++ b/include/drm/drm_dp_helper.h > @@ -431,6 +431,9 @@ struct drm_device; > # define DP_DS_HDMI_YCBCR420_PASS_THROUGH (1 << 2) > # define DP_DS_HDMI_YCBCR444_TO_422_CONV (1 << 3) > # define DP_DS_HDMI_YCBCR444_TO_420_CONV (1 << 4) > +# define DP_DS_HDMI_BT601_RGB_YCBCR_CONV (1 << 5) > +# define DP_DS_HDMI_BT709_RGB_YCBCR_CONV (1 << 6) > +# define DP_DS_HDMI_BT2020_RGB_YCBCR_CONV (1 << 7) I think it would be good to mention the location in spec (section or table), will make it easier to understand/review by directly going to relevant sections in spec. > > #define DP_MAX_DOWNSTREAM_PORTS 0x10 > > @@ -1217,7 +1220,9 @@ struct drm_device; > # define DP_PCON_ENC_PPS_OVERRIDE_DISABLED 0 > # define DP_PCON_ENC_PPS_OVERRIDE_EN_PARAMS 1 > # define DP_PCON_ENC_PPS_OVERRIDE_EN_BUFFER 2 > - > +# define DP_CONVERSION_BT601_RGB_YCBCR_ENABLE (1 << 4) # define > +DP_CONVERSION_BT709_RGB_YCBCR_ENABLE (1 << 5) # define > +DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE (1 << 6) > > /* PCON Downstream HDMI ERROR Status per Lane */ > #define DP_PCON_HDMI_ERROR_STATUS_LN0 0x3037 > @@ -2178,5 +2183,8 @@ int drm_dp_pcon_dsc_bpp_incr(const u8 > pcon_dsc_dpcd[DP_PCON_DSC_ENCODER_CAP_SIZE > int drm_dp_pcon_pps_default(struct drm_dp_aux *aux); int > drm_dp_pcon_pps_override_buf(struct drm_dp_aux *aux, u8 pps_buf[128]); int > drm_dp_pcon_pps_override_param(struct drm_dp_aux *aux, u8 pps_param[6]); > +bool drm_dp_downstream_rgb_to_ycbcr_conversion(const u8 > dpcd[DP_RECEIVER_CAP_SIZE], > + const u8 port_cap[4]); > +int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 > +color_spc); > > #endif /* _DRM_DP_HELPER_H_ */ > -- > 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EFBAC4167B for ; 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a="236182519" X-IronPort-AV: E=Sophos;i="5.78,415,1599548400"; d="scan'208";a="236182519" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Dec 2020 23:10:37 -0800 IronPort-SDR: rog/kyOgyUU1z9fW0u0fRDU5d0e1efC9zn8z1Pz8O8CBvSddNFvytTdGZpUph351Q/53kaKokV +/64jwe/7j9Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,415,1599548400"; d="scan'208";a="379166714" Received: from fmsmsx606.amr.corp.intel.com ([10.18.126.86]) by fmsmga002.fm.intel.com with ESMTP; 12 Dec 2020 23:10:36 -0800 Received: from bgsmsx601.gar.corp.intel.com (10.109.78.80) by fmsmsx606.amr.corp.intel.com (10.18.126.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sat, 12 Dec 2020 23:10:35 -0800 Received: from bgsmsx604.gar.corp.intel.com (10.67.234.6) by BGSMSX601.gar.corp.intel.com (10.109.78.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sun, 13 Dec 2020 12:40:33 +0530 Received: from bgsmsx604.gar.corp.intel.com ([10.67.234.6]) by BGSMSX604.gar.corp.intel.com ([10.67.234.6]) with mapi id 15.01.1713.004; Sun, 13 Dec 2020 12:40:33 +0530 From: "Shankar, Uma" To: "Nautiyal, Ankit K" , "intel-gfx@lists.freedesktop.org" Subject: RE: [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion Thread-Topic: [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion Thread-Index: AQHWzTfnjYeyk30AfUC/Fs7RQhTAHqn0oHHw Date: Sun, 13 Dec 2020 07:10:33 +0000 Message-ID: <84fd6863339d4737a67decd2a9787a23@intel.com> References: <20201208075145.17389-1-ankit.k.nautiyal@intel.com> <20201208075145.17389-8-ankit.k.nautiyal@intel.com> In-Reply-To: <20201208075145.17389-8-ankit.k.nautiyal@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 x-originating-ip: [10.223.10.1] MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "airlied@linux.ie" , "dri-devel@lists.freedesktop.org" , "Sharma, Swati2" , "Kulkarni, Vandita" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" > -----Original Message----- > From: Nautiyal, Ankit K > Sent: Tuesday, December 8, 2020 1:22 PM > To: intel-gfx@lists.freedesktop.org > Cc: dri-devel@lists.freedesktop.org; Shankar, Uma ; > airlied@linux.ie; jani.nikula@linux.intel.com; ville.syrjala@linux.intel.com; > Kulkarni, Vandita ; Sharma, Swati2 > > Subject: [PATCH v4 07/16] drm/dp_helper: Add helpers to configure PCONs RGB- > YCbCr Conversion > > DP Specification for DP2.0 to HDMI2.1 Pcon specifies support for conversion of > colorspace from RGB to YCbCr. > https://groups.vesa.org/wg/DP/document/previewpdf/15651 > > This patch adds the relavant registers and helper functions to get the capability > and set the color conversion bits for rgb->ycbcr conversion through PCON. > > Signed-off-by: Ankit Nautiyal > --- > drivers/gpu/drm/drm_dp_helper.c | 59 +++++++++++++++++++++++++++++++++ > include/drm/drm_dp_helper.h | 10 +++++- > 2 files changed, 68 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/drm_dp_helper.c > b/drivers/gpu/drm/drm_dp_helper.c index d0626f57f99c..344662d5c295 100644 > --- a/drivers/gpu/drm/drm_dp_helper.c > +++ b/drivers/gpu/drm/drm_dp_helper.c > @@ -949,6 +949,35 @@ bool > drm_dp_downstream_444_to_420_conversion(const u8 > dpcd[DP_RECEIVER_CAP_SIZE] } > EXPORT_SYMBOL(drm_dp_downstream_444_to_420_conversion); > > +/** > + * drm_dp_downstream_rgb_to_ycbcr_conversion() - determine downstream > facing port > + * RGB->YCbCr conversion capability > + * @dpcd: DisplayPort configuration data > + * @port_cap: downstream facing port capabilities > + * > + * Returns: whether the downstream facing port can convert RGB->YCbCr > +*/ bool drm_dp_downstream_rgb_to_ycbcr_conversion(const u8 > +dpcd[DP_RECEIVER_CAP_SIZE], > + const u8 port_cap[4]) > +{ > + if (!drm_dp_is_branch(dpcd)) > + return false; > + > + if (dpcd[DP_DPCD_REV] < 0x13) > + return false; > + > + switch (port_cap[0] & DP_DS_PORT_TYPE_MASK) { > + case DP_DS_PORT_TYPE_HDMI: > + if ((dpcd[DP_DOWNSTREAMPORT_PRESENT] & > DP_DETAILED_CAP_INFO_AVAILABLE) == 0) > + return false; > + > + return port_cap[3] & DP_DS_HDMI_BT601_RGB_YCBCR_CONV; I guess there are other conversions also possible, like BT709 and 2020. Update those as well here. > + default: > + return false; > + } > +} > +EXPORT_SYMBOL(drm_dp_downstream_rgb_to_ycbcr_conversion); > + > /** > * drm_dp_downstream_mode() - return a mode for downstream facing port > * @dev: DRM device > @@ -3140,3 +3169,33 @@ int drm_dp_pcon_pps_override_param(struct > drm_dp_aux *aux, u8 pps_param[6]) > return 0; > } > EXPORT_SYMBOL(drm_dp_pcon_pps_override_param); > + > +/* > + * drm_dp_pcon_convert_rgb_to_ycbcr() - Configure the PCon to convert > +RGB to Ycbcr > + * @aux: displayPort AUX channel > + * @color_spc: Color space conversion type > + * > + * Returns 0 on success, else returns negative error code. > + */ > +int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 > +color_spc) { > + int ret; > + u8 buf; > + > + if (color_spc != DP_CONVERSION_BT601_RGB_YCBCR_ENABLE || > + color_spc != DP_CONVERSION_BT709_RGB_YCBCR_ENABLE || > + color_spc != DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE) > + return -EINVAL; Yeah this is wrong, fix it. > + > + ret = drm_dp_dpcd_readb(aux, DP_PROTOCOL_CONVERTER_CONTROL_2, > &buf); > + if (ret < 0) > + return ret; > + > + buf |= color_spc; > + ret = drm_dp_dpcd_writeb(aux, > DP_PROTOCOL_CONVERTER_CONTROL_2, buf); > + if (ret < 0) > + return ret; > + > + return 0; > +} > +EXPORT_SYMBOL(drm_dp_pcon_convert_rgb_to_ycbcr); > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index > 347b4e1a55b4..1b3d54ed7a78 100644 > --- a/include/drm/drm_dp_helper.h > +++ b/include/drm/drm_dp_helper.h > @@ -431,6 +431,9 @@ struct drm_device; > # define DP_DS_HDMI_YCBCR420_PASS_THROUGH (1 << 2) > # define DP_DS_HDMI_YCBCR444_TO_422_CONV (1 << 3) > # define DP_DS_HDMI_YCBCR444_TO_420_CONV (1 << 4) > +# define DP_DS_HDMI_BT601_RGB_YCBCR_CONV (1 << 5) > +# define DP_DS_HDMI_BT709_RGB_YCBCR_CONV (1 << 6) > +# define DP_DS_HDMI_BT2020_RGB_YCBCR_CONV (1 << 7) I think it would be good to mention the location in spec (section or table), will make it easier to understand/review by directly going to relevant sections in spec. > > #define DP_MAX_DOWNSTREAM_PORTS 0x10 > > @@ -1217,7 +1220,9 @@ struct drm_device; > # define DP_PCON_ENC_PPS_OVERRIDE_DISABLED 0 > # define DP_PCON_ENC_PPS_OVERRIDE_EN_PARAMS 1 > # define DP_PCON_ENC_PPS_OVERRIDE_EN_BUFFER 2 > - > +# define DP_CONVERSION_BT601_RGB_YCBCR_ENABLE (1 << 4) # define > +DP_CONVERSION_BT709_RGB_YCBCR_ENABLE (1 << 5) # define > +DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE (1 << 6) > > /* PCON Downstream HDMI ERROR Status per Lane */ > #define DP_PCON_HDMI_ERROR_STATUS_LN0 0x3037 > @@ -2178,5 +2183,8 @@ int drm_dp_pcon_dsc_bpp_incr(const u8 > pcon_dsc_dpcd[DP_PCON_DSC_ENCODER_CAP_SIZE > int drm_dp_pcon_pps_default(struct drm_dp_aux *aux); int > drm_dp_pcon_pps_override_buf(struct drm_dp_aux *aux, u8 pps_buf[128]); int > drm_dp_pcon_pps_override_param(struct drm_dp_aux *aux, u8 pps_param[6]); > +bool drm_dp_downstream_rgb_to_ycbcr_conversion(const u8 > dpcd[DP_RECEIVER_CAP_SIZE], > + const u8 port_cap[4]); > +int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 > +color_spc); > > #endif /* _DRM_DP_HELPER_H_ */ > -- > 2.17.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel