From patchwork Wed Jun 21 08:10:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 13286825 X-Patchwork-Delegate: kieran@bingham.xyz Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CA2FEB64DC for ; Wed, 21 Jun 2023 08:10:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229894AbjFUIK4 (ORCPT ); Wed, 21 Jun 2023 04:10:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229893AbjFUIKy (ORCPT ); Wed, 21 Jun 2023 04:10:54 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D571E10DA for ; Wed, 21 Jun 2023 01:10:50 -0700 (PDT) Received: from uno.lan (unknown [IPv6:2001:b07:5d2e:52c9:1cf0:b3bc:c785:4625]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 722A3A4C; Wed, 21 Jun 2023 10:10:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1687335014; bh=ThZXeOv85mMNQ0BFghMgTes+iyHPvjygMO8QFqUqz0w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uAG8/AiOyTikQyVl8SvtF4OwFf7udehYiR9VWWkJFA1FZxrz3xPO137/xM+HQxkbL kNj3GM+SLLp0QZYZgzpUcuRYeGoOQq5w7GqxMOEeF8Kx1BzZ5sdhUn2zVc5cxrwjG6 QCeNePGNgYOrlajY9su7cHkJkBfFGy2yQhzO3jg8= From: Jacopo Mondi To: Laurent Pinchart , Kieran Bingham Cc: Jacopo Mondi , Simon Ser , Pekka Paalanen , =?utf-8?q?Jonas_=C3=85dahl?= , xaver.hugl@gmail.com, Melissa Wen , wayland-devel , mdaenzer@redhat.com, Uma Shankar , Victoria Brekenfeld , aleixpol@kde.org, Sebastian Wick , Joshua Ashton , airlied@gmail.com, alexander.deucher@amd.com, christian.koenig@amd.com, daniel@ffwll.ch, harry.wentland@amd.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, Rodrigo.Siqueira@amd.com, sunpeng.li@amd.com, tzimmermann@suse.de, Xinhui.Pan@amd.com, DRI Development , amd-gfx@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org Subject: [RFC 2/9] drm/drm_color_mgmt: add shaper LUT to color mgmt properties Date: Wed, 21 Jun 2023 10:10:24 +0200 Message-Id: <20230621081031.7876-3-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230621081031.7876-1-jacopo.mondi@ideasonboard.com> References: <20230621081031.7876-1-jacopo.mondi@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Melissa Wen Shaper LUT is used to shape the content after blending, i.e., de-linearize or normalize space before applying a 3D LUT color correction. In the next patch, we add 3D LUT property to DRM color management after this shaper LUT and before the current gamma LUT. Signed-off-by: Melissa Wen --- drivers/gpu/drm/drm_atomic_state_helper.c | 4 ++++ drivers/gpu/drm/drm_atomic_uapi.c | 10 ++++++++++ drivers/gpu/drm/drm_color_mgmt.c | 18 ++++++++++++++++++ drivers/gpu/drm/drm_fb_helper.c | 3 +++ drivers/gpu/drm/drm_mode_config.c | 14 ++++++++++++++ include/drm/drm_crtc.h | 14 ++++++++++++-- include/drm/drm_mode_config.h | 12 ++++++++++++ include/drm/drm_mode_object.h | 2 +- 8 files changed, 74 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 784e63d70a42..b75dcf2aa881 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -141,8 +141,11 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc, drm_property_blob_get(state->degamma_lut); if (state->ctm) drm_property_blob_get(state->ctm); + if (state->shaper_lut) + drm_property_blob_get(state->shaper_lut); if (state->gamma_lut) drm_property_blob_get(state->gamma_lut); + state->mode_changed = false; state->active_changed = false; state->planes_changed = false; @@ -214,6 +217,7 @@ void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc_state *state) drm_property_blob_put(state->mode_blob); drm_property_blob_put(state->degamma_lut); drm_property_blob_put(state->ctm); + drm_property_blob_put(state->shaper_lut); drm_property_blob_put(state->gamma_lut); } EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state); diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index d867e7f9f2cd..d006e4934ba2 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -430,6 +430,14 @@ static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, &replaced); state->color_mgmt_changed |= replaced; return ret; + } else if (property == config->shaper_lut_property) { + ret = drm_atomic_replace_property_blob_from_id(dev, + &state->shaper_lut, + val, + -1, sizeof(struct drm_color_lut), + &replaced); + state->color_mgmt_changed |= replaced; + return ret; } else if (property == config->gamma_lut_property) { ret = drm_atomic_replace_property_blob_from_id(dev, &state->gamma_lut, @@ -481,6 +489,8 @@ drm_atomic_crtc_get_property(struct drm_crtc *crtc, *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; else if (property == config->ctm_property) *val = (state->ctm) ? state->ctm->base.id : 0; + else if (property == config->shaper_lut_property) + *val = (state->shaper_lut) ? state->shaper_lut->base.id : 0; else if (property == config->gamma_lut_property) *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; else if (property == config->prop_out_fence_ptr) diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c index d021497841b8..cf6a998b4298 100644 --- a/drivers/gpu/drm/drm_color_mgmt.c +++ b/drivers/gpu/drm/drm_color_mgmt.c @@ -69,6 +69,24 @@ * boot-up state too. Drivers can access the blob for the color conversion * matrix through &drm_crtc_state.ctm. * + * “SHAPER_LUT”: + * Blob property to set the shaper lut shaping pixel data after the color + * transformation matrix and before applying 3D Lookup Table (3D LUT). It + * can be used to delinearize content to get an effective 3D LUT mapping. + * The data is interpreted as an array of &struct drm_color_lut elements. + * + * Setting this to NULL (blob property value set to 0) means the output + * color is identical to the input color. This is generally the driver + * boot-up state too. Drivers can access this blob through + * &drm_crtc_state.gamma_lut. + * + * “SHAPER_LUT_SIZE”: + * Unsigned range property to give the size of the shaper lookup table to + * be set on the SHAPER_LUT property (the size depends on the underlying + * hardware). If drivers support multiple LUT sizes then they should + * publish the largest size, and sub-sample smaller sized LUTs + * appropriately. + * * “GAMMA_LUT”: * Blob property to set the gamma lookup table (LUT) mapping pixel data * after the transformation matrix to data sent to the connector. The diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 9978147bbc8a..a4ecb25fcfa0 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -962,8 +962,11 @@ static int setcmap_atomic(struct fb_cmap *cmap, struct fb_info *info) replaced = drm_property_replace_blob(&crtc_state->degamma_lut, NULL); replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL); + replaced |= drm_property_replace_blob(&crtc_state->shaper_lut, + NULL); replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, gamma_lut); + crtc_state->color_mgmt_changed |= replaced; } diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index 87eb591fe9b5..e288bc4815ab 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -353,6 +353,20 @@ static int drm_mode_create_standard_properties(struct drm_device *dev) return -ENOMEM; dev->mode_config.ctm_property = prop; + prop = drm_property_create(dev, + DRM_MODE_PROP_BLOB, + "SHAPER_LUT", 0); + if (!prop) + return -ENOMEM; + dev->mode_config.shaper_lut_property = prop; + + prop = drm_property_create_range(dev, + DRM_MODE_PROP_IMMUTABLE, + "SHAPER_LUT_SIZE", 0, UINT_MAX); + if (!prop) + return -ENOMEM; + dev->mode_config.shaper_lut_size_property = prop; + prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, "GAMMA_LUT", 0); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 8e1cbc75143e..7f289e0153aa 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -152,8 +152,9 @@ struct drm_crtc_state { bool zpos_changed : 1; /** * @color_mgmt_changed: Color management properties have changed - * (@gamma_lut, @degamma_lut or @ctm). Used by the atomic helpers and - * drivers to steer the atomic commit control flow. + * (@shaper_lut, @gamma_lut, @degamma_lut or @ctm). Used by + * the atomic helpers and drivers to steer the atomic commit control + * flow. */ bool color_mgmt_changed : 1; @@ -279,6 +280,15 @@ struct drm_crtc_state { */ struct drm_property_blob *gamma_lut; + /** + * @shaper_lut: + * + * Lookup table used to de-linearize pixel data for gamma correction. + * See drm_crtc_enable_color_mgmt(). The blob (if not NULL) is an array + * of &struct drm_color_lut. + */ + struct drm_property_blob *shaper_lut; + /** * @target_vblank: * diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 973119a9176b..0ad06ec8abec 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -808,6 +808,18 @@ struct drm_mode_config { * degamma LUT. */ struct drm_property *ctm_property; + + /** + * @shaper_lut_property: Optional CRTC property to set the shaper LUT used to + * convert colors before 3D LUT conversion. + */ + struct drm_property *shaper_lut_property; + /** + * @shaper_lut_size_property: Optional CRTC property for the size of the + * shaper LUT as supported by the driver (read-only). + */ + struct drm_property *shaper_lut_size_property; + /** * @gamma_lut_property: Optional CRTC property to set the LUT used to * convert the colors, after the CTM matrix, to the gamma space of the diff --git a/include/drm/drm_mode_object.h b/include/drm/drm_mode_object.h index 912f1e415685..5e75b51936e6 100644 --- a/include/drm/drm_mode_object.h +++ b/include/drm/drm_mode_object.h @@ -60,7 +60,7 @@ struct drm_mode_object { void (*free_cb)(struct kref *kref); }; -#define DRM_OBJECT_MAX_PROPERTY 24 +#define DRM_OBJECT_MAX_PROPERTY 26 /** * struct drm_object_properties - property tracking for &drm_mode_object */