On Thu, Oct 29, 2020 at 08:01:04PM +0100, Maxime Ripard wrote: > In order to make the vc4_kms_load code and error path a bit easier to > read and extend, add functions to create state objects, and use managed > actions to cleanup if needed. > > Signed-off-by: Maxime Ripard <[email protected]>
Nice. With an s/drmm_add_action/drmm_add_action_or_reset/ over the entire series: Acked-by: Daniel Vetter <[email protected]> btw there's a series pending from imx people (Philip Zabel iirc) to add drmm support for modeset objects. I think that would really help clean up vc4. Or well make it slightly less buggy, since atm you're using devm_kzalloc, which strictly speaking, frees the memory too early. Anyway this here looks all nice. -Daniel > --- > drivers/gpu/drm/vc4/vc4_drv.c | 3 -- > drivers/gpu/drm/vc4/vc4_kms.c | 78 +++++++++++++++++++++++++---------- > 2 files changed, 57 insertions(+), 24 deletions(-) > > diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c > index 6e037fbaa090..08c1cc225045 100644 > --- a/drivers/gpu/drm/vc4/vc4_drv.c > +++ b/drivers/gpu/drm/vc4/vc4_drv.c > @@ -312,9 +312,6 @@ static void vc4_drm_unbind(struct device *dev) > drm_dev_unregister(drm); > > drm_atomic_helper_shutdown(drm); > - > - drm_atomic_private_obj_fini(&vc4->load_tracker); > - drm_atomic_private_obj_fini(&vc4->ctm_manager); > } > > static const struct component_master_ops vc4_drm_ops = { > diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c > index 708099a24406..fbfb0698073e 100644 > --- a/drivers/gpu/drm/vc4/vc4_kms.c > +++ b/drivers/gpu/drm/vc4/vc4_kms.c > @@ -93,6 +93,29 @@ static const struct drm_private_state_funcs > vc4_ctm_state_funcs = { > .atomic_destroy_state = vc4_ctm_destroy_state, > }; > > +static void vc4_ctm_obj_fini(struct drm_device *dev, void *unused) > +{ > + struct vc4_dev *vc4 = to_vc4_dev(dev); > + > + drm_atomic_private_obj_fini(&vc4->ctm_manager); > +} > + > +static int vc4_ctm_obj_init(struct vc4_dev *vc4) > +{ > + struct vc4_ctm_state *ctm_state; > + > + drm_modeset_lock_init(&vc4->ctm_state_lock); > + > + ctm_state = kzalloc(sizeof(*ctm_state), GFP_KERNEL); > + if (!ctm_state) > + return -ENOMEM; > + > + drm_atomic_private_obj_init(vc4->dev, &vc4->ctm_manager, > &ctm_state->base, > + &vc4_ctm_state_funcs); > + > + return drmm_add_action(&vc4->base, vc4_ctm_obj_fini, NULL); > +} > + > /* Converts a DRM S31.32 value to the HW S0.9 format. */ > static u16 vc4_ctm_s31_32_to_s0_9(u64 in) > { > @@ -609,6 +632,34 @@ static const struct drm_private_state_funcs > vc4_load_tracker_state_funcs = { > .atomic_destroy_state = vc4_load_tracker_destroy_state, > }; > > +static void vc4_load_tracker_obj_fini(struct drm_device *dev, void *unused) > +{ > + struct vc4_dev *vc4 = to_vc4_dev(dev); > + > + if (!vc4->load_tracker_available) > + return 0; > + > + drm_atomic_private_obj_fini(&vc4->load_tracker); > +} > + > +static int vc4_load_tracker_obj_init(struct vc4_dev *vc4) > +{ > + struct vc4_load_tracker_state *load_state; > + > + if (!vc4->load_tracker_available) > + return 0; > + > + load_state = kzalloc(sizeof(*load_state), GFP_KERNEL); > + if (!load_state) > + return -ENOMEM; > + > + drm_atomic_private_obj_init(vc4->dev, &vc4->load_tracker, > + &load_state->base, > + &vc4_load_tracker_state_funcs); > + > + return drmm_add_action(&vc4->base, vc4_load_tracker_obj_fini, NULL); > +} > + > #define NUM_OUTPUTS 6 > #define NUM_CHANNELS 3 > > @@ -711,8 +762,6 @@ static const struct drm_mode_config_funcs vc4_mode_funcs > = { > int vc4_kms_load(struct drm_device *dev) > { > struct vc4_dev *vc4 = to_vc4_dev(dev); > - struct vc4_ctm_state *ctm_state; > - struct vc4_load_tracker_state *load_state; > bool is_vc5 = of_device_is_compatible(dev->dev->of_node, > "brcm,bcm2711-vc5"); > int ret; > @@ -751,26 +800,13 @@ int vc4_kms_load(struct drm_device *dev) > dev->mode_config.async_page_flip = true; > dev->mode_config.allow_fb_modifiers = true; > > - drm_modeset_lock_init(&vc4->ctm_state_lock); > + ret = vc4_ctm_obj_init(vc4); > + if (ret) > + return ret; > > - ctm_state = kzalloc(sizeof(*ctm_state), GFP_KERNEL); > - if (!ctm_state) > - return -ENOMEM; > - > - drm_atomic_private_obj_init(dev, &vc4->ctm_manager, &ctm_state->base, > - &vc4_ctm_state_funcs); > - > - if (vc4->load_tracker_available) { > - load_state = kzalloc(sizeof(*load_state), GFP_KERNEL); > - if (!load_state) { > - drm_atomic_private_obj_fini(&vc4->ctm_manager); > - return -ENOMEM; > - } > - > - drm_atomic_private_obj_init(dev, &vc4->load_tracker, > - &load_state->base, > - &vc4_load_tracker_state_funcs); > - } > + ret = vc4_load_tracker_obj_init(vc4); > + if (ret) > + return ret; > > drm_mode_config_reset(dev); > > -- > 2.26.2 > > _______________________________________________ > dri-devel mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
