From patchwork Wed Sep 5 20:11:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Sripada, Radhakrishna" X-Patchwork-Id: 10589377 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 AE0065A4 for ; Wed, 5 Sep 2018 20:10:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D9162ABD5 for ; Wed, 5 Sep 2018 20:10:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9B2552ABAC; Wed, 5 Sep 2018 20:10:13 +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 26A062ABC2 for ; Wed, 5 Sep 2018 20:10:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 332076E055; Wed, 5 Sep 2018 20:10:08 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 082426E055; Wed, 5 Sep 2018 20:10:06 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Sep 2018 13:10:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,334,1531810800"; d="scan'208";a="260159845" Received: from invictus.jf.intel.com ([10.54.75.152]) by fmsmga005.fm.intel.com with ESMTP; 05 Sep 2018 13:10:02 -0700 From: Radhakrishna Sripada To: intel-gfx@lists.freedesktop.org Subject: [PATCH v5 1/2] drm: Add connector property to limit max bpc Date: Wed, 5 Sep 2018 13:11:59 -0700 Message-Id: <20180905201200.29414-1-radhakrishna.sripada@intel.com> X-Mailer: git-send-email 2.9.3 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: Stanislav Lisovskiy , Radhakrishna Sripada , Kishore Kadiyala , Manasi Navare , dri-devel@lists.freedesktop.org, Rodrigo Vivi Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP At times 12bpc HDMI cannot be driven due to faulty cables, dongles level shifters etc. To workaround them we may need to drive the output at a lower bpc. Currently the user space does not have a way to limit the bpc. The default bpc to be programmed is decided by the driver and is run against connector limitations. Creating a new connector property "max bpc" in order to limit the bpc. xrandr can make use of this connector property to make sure that bpc does not exceed the configured value. This property can be used by userspace to set the bpc. V2: Initialize max_bpc to satisfy kms_properties V3: Move the property to drm_connector V4: Split drm and i915 components(Ville) V5: Make the property per connector(Ville) Cc: Ville Syrjälä Cc: Kishore Kadiyala Cc: Rodrigo Vivi Cc: Manasi Navare Cc: Stanislav Lisovskiy Signed-off-by: Radhakrishna Sripada --- drivers/gpu/drm/drm_atomic.c | 4 ++++ drivers/gpu/drm/drm_atomic_helper.c | 4 ++++ include/drm/drm_connector.h | 12 ++++++++++++ 3 files changed, 20 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index d0478abc01bd..6c6f8d5b5214 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1420,6 +1420,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector, return set_out_fence_for_connector(state->state, connector, fence_ptr); + } else if (property == connector->max_bpc_property) { + state->max_bpc = val; } else if (connector->funcs->atomic_set_property) { return connector->funcs->atomic_set_property(connector, state, property, val); @@ -1515,6 +1517,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector, *val = 0; } else if (property == config->writeback_out_fence_ptr_property) { *val = 0; + } else if (property == connector->max_bpc_property) { + *val = state->max_bpc; } else if (connector->funcs->atomic_get_property) { return connector->funcs->atomic_get_property(connector, state, property, val); diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 2c23a48482da..7f763650a623 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -638,6 +638,10 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, if (old_connector_state->link_status != new_connector_state->link_status) new_crtc_state->connectors_changed = true; + + if (old_connector_state->max_bpc != + new_connector_state->max_bpc) + new_crtc_state->connectors_changed = true; } if (funcs->atomic_check) diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 97ea41dc678f..9ce961ad28f9 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -460,6 +460,12 @@ struct drm_connector_state { * drm_writeback_signal_completion() */ struct drm_writeback_job *writeback_job; + + /** + * @max_bpc: Connector property to limit the maximum bit depth of + * the pixels. + */ + unsigned int max_bpc; }; /** @@ -923,6 +929,12 @@ struct drm_connector { */ struct drm_property_blob *path_blob_ptr; + /** + * @max_bpc_property: Default connector property for the max bpc to be + * driven out of the connector. + */ + struct drm_property *max_bpc_property; + #define DRM_CONNECTOR_POLL_HPD (1 << 0) #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) From patchwork Wed Sep 5 20:12:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Sripada, Radhakrishna" X-Patchwork-Id: 10589379 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 8C78A180E for ; Wed, 5 Sep 2018 20:10:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E9342AB9E for ; Wed, 5 Sep 2018 20:10:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7C5B42ABB5; Wed, 5 Sep 2018 20:10:16 +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 321682AB3D for ; Wed, 5 Sep 2018 20:10:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 582A76E555; Wed, 5 Sep 2018 20:10:08 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 332616E555; Wed, 5 Sep 2018 20:10:07 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Sep 2018 13:10:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,334,1531810800"; d="scan'208";a="260159861" Received: from invictus.jf.intel.com ([10.54.75.152]) by fmsmga005.fm.intel.com with ESMTP; 05 Sep 2018 13:10:04 -0700 From: Radhakrishna Sripada To: intel-gfx@lists.freedesktop.org Subject: [PATCH v5 2/2] drm/i915: Allow "max bpc" property to limit pipe_bpp Date: Wed, 5 Sep 2018 13:12:00 -0700 Message-Id: <20180905201200.29414-2-radhakrishna.sripada@intel.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20180905201200.29414-1-radhakrishna.sripada@intel.com> References: <20180905201200.29414-1-radhakrishna.sripada@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: Stanislav Lisovskiy , Radhakrishna Sripada , Kishore Kadiyala , Manasi Navare , dri-devel@lists.freedesktop.org, Rodrigo Vivi Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Use the newly added "max bpc" connector property to limit pipe bpp. V3: Use drm_connector_state to access the "max bpc" property V4: Initialize the drm property, add suuport to DP(Ville) V5: Use the property in the connector and fix CI failure(Ville) Cc: Ville Syrjälä Cc: Rodrigo Vivi Cc: Kishore Kadiyala Cc: Manasi Navare Cc: Stanislav Lisovskiy Signed-off-by: Radhakrishna Sripada --- drivers/gpu/drm/i915/intel_display.c | 31 +++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_dp.c | 1 + drivers/gpu/drm/i915/intel_drv.h | 2 ++ drivers/gpu/drm/i915/intel_hdmi.c | 7 +++++++ drivers/gpu/drm/i915/intel_modes.c | 20 ++++++++++++++++++++ 5 files changed, 61 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 1bd14c61dab5..a890aade094c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -10787,6 +10787,34 @@ connected_sink_compute_bpp(struct intel_connector *connector, } } +static void +connected_sink_max_bpp(struct drm_connector_state *conn_state, + struct intel_crtc_state *pipe_config) +{ + switch (conn_state->max_bpc) { + case 8: + case 9: + pipe_config->pipe_bpp = 8*3; + break; + case 10: + case 11: + pipe_config->pipe_bpp = 10*3; + break; + case 12: + case 13: + case 14: + case 15: + pipe_config->pipe_bpp = 12*3; + break; + case 16: + pipe_config->pipe_bpp = 16*3; + break; + default: + break; + } + DRM_DEBUG_KMS("Limiting display bpp to %d\n", pipe_config->pipe_bpp); +} + static int compute_baseline_pipe_bpp(struct intel_crtc *crtc, struct intel_crtc_state *pipe_config) @@ -10815,6 +10843,9 @@ compute_baseline_pipe_bpp(struct intel_crtc *crtc, if (connector_state->crtc != &crtc->base) continue; + if (connector_state->max_bpc) + connected_sink_max_bpp(connector_state, pipe_config); + connected_sink_compute_bpp(to_intel_connector(connector), pipe_config); } diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 436c22de33b6..3955745a4d9f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5719,6 +5719,7 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect intel_attach_force_audio_property(connector); intel_attach_broadcast_rgb_property(connector); + intel_attach_max_bpc_property(connector, 8, 16); if (intel_dp_is_edp(intel_dp)) { u32 allowed_scalers; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index f5731215210a..b3c703dacc92 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1869,6 +1869,8 @@ int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter); void intel_attach_force_audio_property(struct drm_connector *connector); void intel_attach_broadcast_rgb_property(struct drm_connector *connector); void intel_attach_aspect_ratio_property(struct drm_connector *connector); +void intel_attach_max_bpc_property(struct drm_connector *connector, int min, int + max); /* intel_overlay.c */ diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index a2dab0b6bde6..e649bbf07642 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -2109,11 +2109,18 @@ static const struct drm_encoder_funcs intel_hdmi_enc_funcs = { static void intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector) { + struct drm_i915_private *dev_priv = to_i915(connector->dev); + intel_attach_force_audio_property(connector); intel_attach_broadcast_rgb_property(connector); intel_attach_aspect_ratio_property(connector); drm_connector_attach_content_type_property(connector); connector->state->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE; + + if (HAS_GMCH_DISPLAY(dev_priv)) + intel_attach_max_bpc_property(connector, 8, 8); + else + intel_attach_max_bpc_property(connector, 8, 12); } /* diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c index ca44bf368e24..12f1238bad8a 100644 --- a/drivers/gpu/drm/i915/intel_modes.c +++ b/drivers/gpu/drm/i915/intel_modes.c @@ -133,3 +133,23 @@ intel_attach_aspect_ratio_property(struct drm_connector *connector) connector->dev->mode_config.aspect_ratio_property, DRM_MODE_PICTURE_ASPECT_NONE); } + +void +intel_attach_max_bpc_property(struct drm_connector *connector, int min, int + max) +{ + struct drm_device *dev = connector->dev; + struct drm_property *prop; + + prop = connector->max_bpc_property; + if (prop == NULL) { + prop = drm_property_create_range(dev, 0, "max bpc", min, max); + if (prop == NULL) + return; + + connector->max_bpc_property = prop; + } + + drm_object_attach_property(&connector->base, prop, max); + connector->state->max_bpc = max; +}