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drm/vc4: kms: Add functions to create the state objects 

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 <maxime@cerno.tech>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201029190104.2181730-6-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2020-10-29 20:01:04 +01:00
parent 84d7d4720c
commit dcda7c28bf
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
2 changed files with 57 additions and 24 deletions
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3
drivers/gpu/drm/vc4/vc4_drv.c
View File

@ -324,9 +324,6 @@ 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 = {

78
drivers/gpu/drm/vc4/vc4_kms.c
View File

@ -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->base, &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;
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->base, &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);