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bh=zlMFKXhNy+QFNkiK0joc1nv/SfFzfMcnr1sereJaSMs=; b=X6J02Nz3n2BflHni7sipfFKg7daLubwcy+5ZXOyeoh9yCbqFT/9L7mPiMCnVT/9uoMlM+h 4h5yl9STXBFFLXIiGGq/t0BrOL8gkfG1F/Y6v2P4bVDdIxn7vcnHzaonMTH9ub8uuh9uRn BrNKQgvEG/AhBEJauYjnkfjqiWc3Uw3hJjF7i5C2kmZatRNY7qeGnFAE1FyVQHKX39LXwf XwDku/VGAr6iUEgxopDLjyD1d8U0f5fWkNthymdXD9mBYJZciN9BDyyUitUHl04oGr3QBs 6LWQvk9giCnY/3tylERnIU+/vz4dtOsom7C5vWWUkfW9EotaCyRxoBHJXV0wyg== From: Louis Chauvet Date: Wed, 14 Aug 2024 16:36:26 +0200 Subject: [PATCH RFC 04/15] drm/vkms: Add a validation function for vkms configuration 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: <20240814-google-remove-crtc-index-from-parameter-v1-4-6e179abf9fd4@bootlin.com> References: <20240814-google-remove-crtc-index-from-parameter-v1-0-6e179abf9fd4@bootlin.com> In-Reply-To: <20240814-google-remove-crtc-index-from-parameter-v1-0-6e179abf9fd4@bootlin.com> To: Rodrigo Siqueira , Melissa Wen , =?utf-8?q?Ma=C3=ADra_Canal?= , Haneen Mohammed , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie Cc: dri-devel@lists.freedesktop.org, arthurgrillo@riseup.net, linux-kernel@vger.kernel.org, jeremie.dautheribes@bootlin.com, miquel.raynal@bootlin.com, thomas.petazzoni@bootlin.com, seanpaul@google.com, nicolejadeyee@google.com, Louis Chauvet X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; 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a=openpgp; fpr=8B7104AE9A272D6693F527F2EC1883F55E0B40A5 X-GND-Sasl: louis.chauvet@bootlin.com As the configuration will be used by userspace, add a validator to avoid creating a broken DRM device Signed-off-by: Louis Chauvet --- drivers/gpu/drm/vkms/vkms_config.c | 5 +++++ drivers/gpu/drm/vkms/vkms_config.h | 14 ++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms= _config.c index ad5d814e6e83..d8348af9587e 100644 --- a/drivers/gpu/drm/vkms/vkms_config.c +++ b/drivers/gpu/drm/vkms/vkms_config.c @@ -21,6 +21,11 @@ void vkms_config_destroy(struct vkms_config *config) kfree(config); } =20 +bool vkms_config_is_valid(struct vkms_config *config) +{ + return true; +} + static int vkms_config_show(struct seq_file *m, void *data) { struct drm_debugfs_entry *entry =3D m->private; diff --git a/drivers/gpu/drm/vkms/vkms_config.h b/drivers/gpu/drm/vkms/vkms= _config.h index b28483173874..363f5bc8f64b 100644 --- a/drivers/gpu/drm/vkms/vkms_config.h +++ b/drivers/gpu/drm/vkms/vkms_config.h @@ -29,4 +29,18 @@ void vkms_config_register_debugfs(struct vkms_device *vk= ms_device); struct vkms_config *vkms_config_create(void); void vkms_config_destroy(struct vkms_config *config); =20 +/** + * vkms_config_is_valid() - Validate a configuration + * + * Check if all the property defined in the configuration are valids. This= will return false for + * example if: + * - no or many primary planes are present; + * - the default rotation of a plane is not in its supported rotation; + * - a CRTC don't have any encoder... + * + * @vkms_config: Configuration to validate + */ +bool vkms_config_is_valid(struct vkms_config *vkms_config); + + #endif //_VKMS_CONFIG_H --=20 2.44.2