From nobody Wed Dec 17 11:33:47 2025 Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D44FF11183 for ; Tue, 16 Jan 2024 04:52:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="MeFyGB+v" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=sHiKHjxlfLZj03LdFNu2Rhv69O48QDTdcQSnj2uTU0A=; b=MeFyGB+vG98EyF2wWBv1iMVkyc 5ewLs3jJXDwFmn3yorly9N3YGNnGhXnU7UxD4FBPJTtiNS143HPOIGxo3DcHrSOmSP0UYXPU8FlwI izeKxad0m3Drq52tRbguwNJPCA8PaEXl8lez7+p7VOq8dpaifKDxUlqXGSKtwpnsknsRM31YIOXNR WGgC8CR6+WC9XmDuOWS7qWZu8COht1AHpdHxxIZ98s5R2fXbanoSVTtrWR/JY/Vv+icfpn3L0z306 yLgbp2F0svvtinZU3O6UhVmLwZTDyQn/AeB99ze0kYSr1MLG0IwFIBUie/iQr8tgD41YYVGpc2Suu /PrSFNrQ==; Received: from [177.45.63.147] (helo=steammachine.lan) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1rPbQr-006r0R-Gc; Tue, 16 Jan 2024 05:52:13 +0100 From: =?UTF-8?q?Andr=C3=A9=20Almeida?= To: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: kernel-dev@igalia.com, alexander.deucher@amd.com, christian.koenig@amd.com, Simon Ser , Pekka Paalanen , daniel@ffwll.ch, Daniel Stone , =?UTF-8?q?=27Marek=20Ol=C5=A1=C3=A1k=27?= , Dave Airlie , ville.syrjala@linux.intel.com, Xaver Hugl , =?UTF-8?q?Andr=C3=A9=20Almeida?= Subject: [PATCH 1/2] drm/atomic: Allow drivers to write their own plane check for async flips Date: Tue, 16 Jan 2024 01:51:58 -0300 Message-ID: <20240116045159.1015510-2-andrealmeid@igalia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240116045159.1015510-1-andrealmeid@igalia.com> References: <20240116045159.1015510-1-andrealmeid@igalia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Some hardware are more flexible on what they can flip asynchronously, so rework the plane check so drivers can implement their own check, lifting up some of the restrictions. Signed-off-by: Andr=C3=A9 Almeida --- drivers/gpu/drm/drm_atomic_uapi.c | 62 ++++++++++++++++++++++--------- include/drm/drm_atomic_uapi.h | 12 ++++++ include/drm/drm_plane.h | 5 +++ 3 files changed, 62 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic= _uapi.c index aee4a65d4959..6d5b9fec90c7 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -620,7 +620,7 @@ static int drm_atomic_plane_set_property(struct drm_pla= ne *plane, return 0; } =20 -static int +int drm_atomic_plane_get_property(struct drm_plane *plane, const struct drm_plane_state *state, struct drm_property *property, uint64_t *val) @@ -683,6 +683,7 @@ drm_atomic_plane_get_property(struct drm_plane *plane, =20 return 0; } +EXPORT_SYMBOL(drm_atomic_plane_get_property); =20 static int drm_atomic_set_writeback_fb_for_connector( struct drm_connector_state *conn_state, @@ -1026,18 +1027,54 @@ int drm_atomic_connector_commit_dpms(struct drm_ato= mic_state *state, return ret; } =20 -static int drm_atomic_check_prop_changes(int ret, uint64_t old_val, uint64= _t prop_value, +int drm_atomic_check_prop_changes(int ret, uint64_t old_val, uint64_t prop= _value, struct drm_property *prop) { if (ret !=3D 0 || old_val !=3D prop_value) { drm_dbg_atomic(prop->dev, - "[PROP:%d:%s] No prop can be changed during async flip\n", + "[PROP:%d:%s] This prop cannot be changed during async flip\n", prop->base.id, prop->name); return -EINVAL; } =20 return 0; } +EXPORT_SYMBOL(drm_atomic_check_prop_changes); + +/* plane changes may have exceptions, so we have a special function for th= em */ +static int drm_atomic_check_plane_changes(struct drm_property *prop, + struct drm_plane *plane, + struct drm_plane_state *plane_state, + struct drm_mode_object *obj, + u64 prop_value, u64 old_val) +{ + struct drm_mode_config *config =3D &plane->dev->mode_config; + int ret; + + if (plane->funcs->check_async_props) + return plane->funcs->check_async_props(prop, plane, plane_state, + obj, prop_value, old_val); + + /* + * if you are trying to change something other than the FB ID, your + * change will be either rejected or ignored, so we can stop the check + * here + */ + if (prop !=3D config->prop_fb_id) { + ret =3D drm_atomic_plane_get_property(plane, plane_state, + prop, &old_val); + return drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); + } + + if (plane_state->plane->type !=3D DRM_PLANE_TYPE_PRIMARY) { + drm_dbg_atomic(prop->dev, + "[OBJECT:%d] Only primary planes can be changed during async fli= p\n", + obj->id); + return -EINVAL; + } + + return 0; +} =20 int drm_atomic_set_property(struct drm_atomic_state *state, struct drm_file *file_priv, @@ -1100,7 +1137,6 @@ int drm_atomic_set_property(struct drm_atomic_state *= state, case DRM_MODE_OBJECT_PLANE: { struct drm_plane *plane =3D obj_to_plane(obj); struct drm_plane_state *plane_state; - struct drm_mode_config *config =3D &plane->dev->mode_config; =20 plane_state =3D drm_atomic_get_plane_state(state, plane); if (IS_ERR(plane_state)) { @@ -1108,19 +1144,11 @@ int drm_atomic_set_property(struct drm_atomic_state= *state, break; } =20 - if (async_flip && prop !=3D config->prop_fb_id) { - ret =3D drm_atomic_plane_get_property(plane, plane_state, - prop, &old_val); - ret =3D drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); - break; - } - - if (async_flip && plane_state->plane->type !=3D DRM_PLANE_TYPE_PRIMARY) { - drm_dbg_atomic(prop->dev, - "[OBJECT:%d] Only primary planes can be changed during async fl= ip\n", - obj->id); - ret =3D -EINVAL; - break; + if (async_flip) { + ret =3D drm_atomic_check_plane_changes(prop, plane, plane_state, + obj, prop_value, old_val); + if (ret) + break; } =20 ret =3D drm_atomic_plane_set_property(plane, diff --git a/include/drm/drm_atomic_uapi.h b/include/drm/drm_atomic_uapi.h index 4c6d39d7bdb2..d65fa8fbbca0 100644 --- a/include/drm/drm_atomic_uapi.h +++ b/include/drm/drm_atomic_uapi.h @@ -29,6 +29,8 @@ #ifndef DRM_ATOMIC_UAPI_H_ #define DRM_ATOMIC_UAPI_H_ =20 +#include + struct drm_crtc_state; struct drm_display_mode; struct drm_property_blob; @@ -37,6 +39,9 @@ struct drm_crtc; struct drm_connector_state; struct dma_fence; struct drm_framebuffer; +struct drm_mode_object; +struct drm_property; +struct drm_plane; =20 int __must_check drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, @@ -53,4 +58,11 @@ int __must_check drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, struct drm_crtc *crtc); =20 +int drm_atomic_plane_get_property(struct drm_plane *plane, + const struct drm_plane_state *state, + struct drm_property *property, uint64_t *val); + +int drm_atomic_check_prop_changes(int ret, uint64_t old_val, uint64_t prop= _value, + struct drm_property *prop); + #endif diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h index c6565a6f9324..73dac8d76831 100644 --- a/include/drm/drm_plane.h +++ b/include/drm/drm_plane.h @@ -540,6 +540,11 @@ struct drm_plane_funcs { */ bool (*format_mod_supported)(struct drm_plane *plane, uint32_t format, uint64_t modifier); + + int (*check_async_props)(struct drm_property *prop, struct drm_plane *pla= ne, + struct drm_plane_state *plane_state, + struct drm_mode_object *obj, + u64 prop_value, u64 old_val); }; =20 /** --=20 2.43.0