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([213.94.26.172]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3718983a311sm12650575f8f.23.2024.08.20.02.09.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Aug 2024 02:09:18 -0700 (PDT) From: =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= To: louis.chauvet@bootlin.com Cc: airlied@gmail.com, arthurgrillo@riseup.net, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, hamohammed.sa@gmail.com, jeremie.dautheribes@bootlin.com, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, mairacanal@riseup.net, melissa.srw@gmail.com, miquel.raynal@bootlin.com, mripard@kernel.org, nicolejadeyee@google.com, rodrigosiqueiramelo@gmail.com, seanpaul@google.com, thomas.petazzoni@bootlin.com, tzimmermann@suse.de, =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= Subject: [PATCH RFC 1/4] drm/vkms: Switch to managed for connector Date: Tue, 20 Aug 2024 11:09:11 +0200 Message-ID: <20240820090912.2854-1-jose.exposito89@gmail.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240814-google-vkms-managed-v1-1-7ab8b8921103@bootlin.com> References: <20240814-google-vkms-managed-v1-1-7ab8b8921103@bootlin.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: 8bit Hi Louis, Thanks for these patches. Easy review as my configfs series included similar patches :) I think that this series could be easily rebased on drm-misc-next, but I don't know if that'd add a lot of work rebasing other series. I'd be nice to get these 4 merged. > The current VKMS driver uses non-managed function to create connectors. It > is not an issue yet, but in order to support multiple devices easily, > convert this code to use drm and device managed helpers. > > Signed-off-by: Louis Chauvet Reviewed-by: José Expósito > --- > drivers/gpu/drm/vkms/vkms_drv.h | 1 - > drivers/gpu/drm/vkms/vkms_output.c | 22 ++++++++++------------ > 2 files changed, 10 insertions(+), 13 deletions(-) > > diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h > index f74a5c2045f9..cea7b2640c5d 100644 > --- a/drivers/gpu/drm/vkms/vkms_drv.h > +++ b/drivers/gpu/drm/vkms/vkms_drv.h > @@ -43,7 +43,6 @@ > struct vkms_output { > struct drm_crtc crtc; > struct drm_encoder encoder; > - struct drm_connector connector; > struct drm_writeback_connector wb_connector; > struct hrtimer vblank_hrtimer; > ktime_t period_ns; > diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c > index 20073a00b200..4767838c3a73 100644 > --- a/drivers/gpu/drm/vkms/vkms_output.c > +++ b/drivers/gpu/drm/vkms/vkms_output.c > @@ -3,6 +3,7 @@ > #include > #include > #include > +#include Nit: Keep includes sorted alphabetically if possible > > #include "vkms_writeback.h" > #include "vkms_plane.h" > @@ -10,7 +11,6 @@ > > static const struct drm_connector_funcs vkms_connector_funcs = { > .fill_modes = drm_helper_probe_single_connector_modes, > - .destroy = drm_connector_cleanup, > .reset = drm_atomic_helper_connector_reset, > .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, > .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, > @@ -54,7 +54,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int possible_crtc_index) > { > struct vkms_output *output = &vkmsdev->output; > struct drm_device *dev = &vkmsdev->drm; > - struct drm_connector *connector = &output->connector; > + struct drm_connector *connector; > struct drm_encoder *encoder = &output->encoder; > struct drm_crtc *crtc = &output->crtc; > struct vkms_plane *primary, *cursor = NULL; > @@ -90,11 +90,15 @@ int vkms_output_init(struct vkms_device *vkmsdev, int possible_crtc_index) > if (ret) > return ret; > > - ret = drm_connector_init(dev, connector, &vkms_connector_funcs, > - DRM_MODE_CONNECTOR_VIRTUAL); > + connector = drmm_kzalloc(&vkmsdev->drm, sizeof(*connector), GFP_KERNEL); "&vkmsdev->drm" can be replaced with "dev". > + if (!connector) For consistency with the init function, it'd be nice to log this error as well: DRM_ERROR("Failed to allocate connector\n"); > + return -ENOMEM; > + > + ret = drmm_connector_init(dev, connector, &vkms_connector_funcs, > + DRM_MODE_CONNECTOR_VIRTUAL, NULL); > if (ret) { > DRM_ERROR("Failed to init connector\n"); > - goto err_connector; > + return ret; > } > > drm_connector_helper_add(connector, &vkms_conn_helper_funcs); > @@ -103,7 +107,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int possible_crtc_index) > DRM_MODE_ENCODER_VIRTUAL, NULL); > if (ret) { > DRM_ERROR("Failed to init encoder\n"); > - goto err_encoder; > + return ret; > } > /* > * This is an hardcoded value to select crtc for the encoder. > @@ -130,11 +134,5 @@ int vkms_output_init(struct vkms_device *vkmsdev, int possible_crtc_index) > err_attach: > drm_encoder_cleanup(encoder); > > -err_encoder: > - drm_connector_cleanup(connector); > - > -err_connector: > - drm_crtc_cleanup(crtc); > - I think that, technically, err_encoder should call drm_crtc_cleanup() in this patch. However, since a future patch will remove this code I don't find it that relevant. > return ret; > }