From nobody Sun Oct 5 14:31:51 2025 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) (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 A2B96246786 for ; Fri, 1 Aug 2025 14:43:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754059436; cv=none; b=Af10Dzx4E/sCwO1jr7psONdbOLjuZ13rpv79YjWda7cxAR+odm7992maecabiuNw/44g6gJD5ndUs0s+JAOWf0z27PvOT3ptn8s/+hDPk+a0Ko9s/psAAJoWAN6wlb5n4PxvGfB9RzCY4XX0MY6sK2obR/9dFen8iLgWiNbsV6s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754059436; c=relaxed/simple; bh=CoQQQ54Nww1OKo53T3U366w9ZeC8wDbRVYKl2l0onU8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=YtEifrgMNxKiH4oVcTRVi42Ji6JA3qJZqx8upQP+BvsdcLUDoMU3u3X+VcXAT6apKBe5FIBa/yKiGF4C2M10SKhfAu0FQJ0pc2ZUECwOV/tPF9dtHnW262DCIsfLlntGd8NZ3CAPpMfWBFBxbjK71rqi04r36TxyLVCgG69/enc= ARC-Authentication-Results: i=1; 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bh=U4GOYRcAGnrxluekfcmtZfpghkxdEd4YE3WMatT/cbs=; b=A/NHIBZAb+7HlUD/b27Uha3C00KdmYJ82xqi6TLjNBMYUvEXt+ZpjWPAhTuenZh5T0V38A 4BjalEY10nUFeyAvuLk3nU6xGKGJq5smfVryEz4TpDmJe78Nc6YWB8daT7aNbWn0OahbXz d3att8yiUM0LhHLc/qdBKqohm01iTujS1w02a4rVJvQKq0dG3qHARZqA1gYD5mChsyYPWa B9HlFBxlzZU6t1+ItuJoeP+cNRZ/C3OivzHsET0kL8AlAUGwoCS5V47ephvqyFTpml8pgm u/0lhv7cwWSXxRLhX7aJI5WRx6VepkXimLaKzA1PNZvtnIcnedLVmir/2Ke+1w== From: Louis Chauvet Date: Fri, 01 Aug 2025 16:43:48 +0200 Subject: [PATCH 1/2] drm/vkms: Add zpos property to planes 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 Message-Id: <20250801-vkms-fix-zpos-v1-1-d83ba1e6291d@bootlin.com> References: <20250801-vkms-fix-zpos-v1-0-d83ba1e6291d@bootlin.com> In-Reply-To: <20250801-vkms-fix-zpos-v1-0-d83ba1e6291d@bootlin.com> To: Haneen Mohammed , Simona Vetter , Melissa Wen , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie Cc: thomas.petazzoni@bootlin.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Louis Chauvet X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1276; i=louis.chauvet@bootlin.com; h=from:subject:message-id; bh=CoQQQ54Nww1OKo53T3U366w9ZeC8wDbRVYKl2l0onU8=; b=owEBbQKS/ZANAwAIASCtLsZbECziAcsmYgBojNKmSbtmmpv2v3Bd6ZjhoqFXDDGcnsRJXF5ur EIxoFTWk46JAjMEAAEIAB0WIQRPj7g/vng8MQxQWQQgrS7GWxAs4gUCaIzSpgAKCRAgrS7GWxAs 4pyAD/99KAITbb+AU/AwvAWrbid6B1+XYOG38q9cuK76WAwR3VmNeC245N7dRXpyevRy03uLH/c 9dRaiuUWLmHO0WiPAiKRAluqNt/pq1JejcCcVa1mZGMc4HKN96uCY1hST5lRiSsgRVEuFDtW/be 1LjJ/6YvGycwAMQ0yIvEj0aOOkHtAdSEoKjqv09R7T15d/1sbn7aXiBi/WJedbHEUa3ss+Ikqr8 SalP8wTs1lNuzKQ5T55ZLTn/CocCVfddVEiGdFoEnWBKMXwYdPev1+EMn71HXXB/oOudPYeSDPI fYf5lkKCb4J3g9cueHTGFzl1JqEJDJp3m+u98JrkGkNcj2vpVyVMoHNVhQS2QgGK1zcKeddRNMm e26CoiJThRajdtSg4uv4mKQFSI1+fCYlkt3lI8SmbDy9GBpxIC/Yyf7bVgVQ02gH54BsXWTtsTY U6EU1OjXRKsON2JUEvtPcK6Wq1oEJk0AoJ+17lYL8LJJpQiqRAErBIHky5JFDA9a8mg7n5R2E2F PCHg53kqjuFtkh6coz750W4egbxSRZ6ewIUzqGEOyUUVuHmSuth3a5mb8t252nDpfvmQ/fMRHjn s+vWNpMUXWu2oGcBTQlMlq9kWxHIAXYUfzMZB90Ys61MPwhpoRvGeXzA6X4r1LqwmObHdRpVxT7 R70Yxecx606rl7A== X-Developer-Key: i=louis.chauvet@bootlin.com; a=openpgp; fpr=8B7104AE9A272D6693F527F2EC1883F55E0B40A5 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgddutdefleeiucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeehtdejtddtteeiiefgleejkeetteevhfdukeegleffjeehgeeivefhgeduffdvvdenucfkphepledtrdekledrudeifedruddvjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeeltddrkeelrdduieefrdduvdejpdhhvghloheplgduledvrdduieekrddtrddvtdgnpdhmrghilhhfrhhomheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepuddupdhrtghpthhtohephhgrmhhohhgrmhhmvggurdhsrgesghhmrghilhdrtghomhdprhgtphhtthhopegurhhiqdguvghvvghlsehlihhsthhsrdhfrhgvvgguvghskhhtohhprdhorhhgpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepthiiihhmmhgvrhhmrghnnhesshhushgvrdguvgdprhgtphhtthhopehmvghli hhsshgrrdhsrhifsehgmhgrihhlrdgtohhmpdhrtghpthhtohepmhhrihhprghrugeskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomh X-GND-Sasl: louis.chauvet@bootlin.com Currently no zpos are defined for vkms planes. This is not yet an issue, but with the future introduction of configfs, we need to have a way to properly order plane composition. In order to make it predictable, add zpos=3D0 for primary, zpos=3D1 for overlays and zpos=3D2 for cursor. This will be configurable later. Signed-off-by: Louis Chauvet --- drivers/gpu/drm/vkms/vkms_plane.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_= plane.c index e3fdd161d0f0a1d20c14a79dbe51c08c8486d12f..44bf9eedf5a7641f2eb171c8995= 079ca65dfa04e 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -232,5 +232,17 @@ struct vkms_plane *vkms_plane_init(struct vkms_device = *vkmsdev, DRM_COLOR_YCBCR_BT601, DRM_COLOR_YCBCR_FULL_RANGE); =20 + switch (type) { + case DRM_PLANE_TYPE_PRIMARY: + drm_plane_create_zpos_immutable_property(&plane->base, 0); + break; + case DRM_PLANE_TYPE_OVERLAY: + drm_plane_create_zpos_immutable_property(&plane->base, 1); + break; + case DRM_PLANE_TYPE_CURSOR: + drm_plane_create_zpos_immutable_property(&plane->base, 2); + break; + } + return plane; } --=20 2.50.1 From nobody Sun Oct 5 14:31:51 2025 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) (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 56AB325743E for ; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250801-vkms-fix-zpos-v1-2-d83ba1e6291d@bootlin.com> References: <20250801-vkms-fix-zpos-v1-0-d83ba1e6291d@bootlin.com> In-Reply-To: <20250801-vkms-fix-zpos-v1-0-d83ba1e6291d@bootlin.com> To: Haneen Mohammed , Simona Vetter , Melissa Wen , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie Cc: thomas.petazzoni@bootlin.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Louis Chauvet X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2542; i=louis.chauvet@bootlin.com; h=from:subject:message-id; bh=xbRNygqeCI/g92dMO05R8xANYrSCMlkw/7PZ6ZSdPoo=; b=owEBbQKS/ZANAwAIASCtLsZbECziAcsmYgBojNKm+N6ReAgv5etfRseZt/O/Z7/nzOWM5g7Dg NZyBvuZBYiJAjMEAAEIAB0WIQRPj7g/vng8MQxQWQQgrS7GWxAs4gUCaIzSpgAKCRAgrS7GWxAs 4nb9D/wOOQGnHoqr1UxnEadidkrvQUtCgmTJzA9Zf8iTPKoshPDm8ERCBly/IHnPrvWy77/Xfnc U6BG1fzoq6UyCfEuIyX2zZnQTYGh/NCq+vHe7VzKPkr2JHG9W49Stu0+g60wKMKxZGNhyr5Z0c7 n32w6ZZ/jUY7r7ICjvrlBR7Pnjm/WwXY+OyFYzCB6+jSKmUVIWkJ+yPh1Dwng+V6EAw9dTCVjul nBO30lZSSUZggHGx4dittSvmgDJFbE2XiyApTsIl3o+2lA5ALTapYLlcDM0qSYuYXWjxWLPkIE8 j0p6tmww1PFnV/U3fY73lD6g/ZiJbk5hFj3jKZ9pv/IEw3txtOmkfdpDSnyF7hzMq5uv1pZGKdj lRMknrEIk0ubc7HhZTW231pNrB8US8m/BSN3xx549oY1I+9NT7adtJuOHOGdPxtIGFFQAcSiRkG +/y2umfarf6Tx07iOZL21G0lmaQjT+r5jeARg4AQJPgCosE6a0dluSmWA4raX9Hj8Qo+lWn1zcB c8dNJk8Xh1RJrMgojkDIlqiCnZCXft0ktLplLKqaJQDbDl95tXfxAx/X0Hld/0D2VUJiFoY+vxv bvsZm9NREFT89kkU19hqZd4YAh/Hg0YMTeBXJFWBe81g11uiAqbh+dpLh1XAGmFqxmQfjnaDciV 9ir0vIM7k95oZaw== X-Developer-Key: i=louis.chauvet@bootlin.com; a=openpgp; fpr=8B7104AE9A272D6693F527F2EC1883F55E0B40A5 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgddutdefleeiucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeehtdejtddtteeiiefgleejkeetteevhfdukeegleffjeehgeeivefhgeduffdvvdenucfkphepledtrdekledrudeifedruddvjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeeltddrkeelrdduieefrdduvdejpdhhvghloheplgduledvrdduieekrddtrddvtdgnpdhmrghilhhfrhhomheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepuddupdhrtghpthhtohephhgrmhhohhgrmhhmvggurdhsrgesghhmrghilhdrtghomhdprhgtphhtthhopegurhhiqdguvghvvghlsehlihhsthhsrdhfrhgvvgguvghskhhtohhprdhorhhgpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepthiiihhmmhgvrhhmrghnnhesshhushgvrdguvgdprhgtphhtthhopehmvghli hhsshgrrdhsrhifsehgmhgrihhlrdgtohhmpdhrtghpthhtohepmhhrihhprghrugeskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomh X-GND-Sasl: louis.chauvet@bootlin.com The current blending algorithm requires that vkms_state->active_planes be ordered by z-order. This has not been an issue so far because the planes are registered in the correct order in DRM (primary-overlay-cursor). This new algorithm now uses the configured z-order to populate active_planes. Signed-off-by: Louis Chauvet --- drivers/gpu/drm/vkms/vkms_crtc.c | 26 ++++++++++++++++++++------ drivers/gpu/drm/vkms/vkms_drv.c | 1 + 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_c= rtc.c index e60573e0f3e9510252e1f198b00e28bcc7987620..f3f3ad8ede29987b385d5383497= 0bcd0c6adefa7 100644 --- a/drivers/gpu/drm/vkms/vkms_crtc.c +++ b/drivers/gpu/drm/vkms/vkms_crtc.c @@ -200,14 +200,28 @@ static int vkms_crtc_atomic_check(struct drm_crtc *cr= tc, vkms_state->num_active_planes =3D i; =20 i =3D 0; - drm_for_each_plane_mask(plane, crtc->dev, crtc_state->plane_mask) { - plane_state =3D drm_atomic_get_existing_plane_state(crtc_state->state, p= lane); =20 - if (!plane_state->visible) - continue; + unsigned int current_zpos =3D 0; + + while (i < vkms_state->num_active_planes) { + unsigned int next_zpos =3D UINT_MAX; + + drm_for_each_plane_mask(plane, crtc->dev, crtc_state->plane_mask) { + plane_state =3D drm_atomic_get_existing_plane_state(crtc_state->state, = plane); + + if (!plane_state->visible) + continue; + + if (plane_state->normalized_zpos =3D=3D current_zpos) + vkms_state->active_planes[i++] =3D to_vkms_plane_state(plane_state); + + if (plane_state->normalized_zpos > current_zpos && + plane_state->normalized_zpos < next_zpos) + next_zpos =3D plane_state->normalized_zpos; + } + + current_zpos =3D next_zpos; =20 - vkms_state->active_planes[i++] =3D - to_vkms_plane_state(plane_state); } =20 return 0; diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_dr= v.c index e8472d9b6e3b2b5d6d497763288bf3dc6fde5987..e492791a7a970b768184292bf82= 318e3fca6b36a 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -135,6 +135,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsde= v) dev->mode_config.max_height =3D YRES_MAX; dev->mode_config.cursor_width =3D 512; dev->mode_config.cursor_height =3D 512; + dev->mode_config.normalize_zpos =3D true; /* * FIXME: There's a confusion between bpp and depth between this and * fbdev helpers. We have to go with 0, meaning "pick the default", --=20 2.50.1