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drm/vc4: drv: Support BCM2711 

The BCM2711 has a reworked display pipeline, and the load tracker needs
some adjustment to operate properly. Let's add a compatible for BCM2711
and disable the load tracker until properly supported.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/beac4f9ef0261bca731a0402c8354e9af740519c.1599120059.git-series.maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2020-09-03 10:01:51 +02:00
parent b5d1443aa3
commit f437bc1ec7
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
4 changed files with 40 additions and 13 deletions
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1
drivers/gpu/drm/vc4/vc4_drv.c
View File

@ -372,6 +372,7 @@ static int vc4_platform_drm_remove(struct platform_device *pdev)
}
static const struct of_device_id vc4_of_match[] = {
{ .compatible = "brcm,bcm2711-vc5", },
{ .compatible = "brcm,bcm2835-vc4", },
{ .compatible = "brcm,cygnus-vc4", },
{},

3
drivers/gpu/drm/vc4/vc4_drv.h
View File

@ -200,6 +200,9 @@ struct vc4_dev {
int power_refcount;
/* Set to true when the load tracker is supported. */
bool load_tracker_available;
/* Set to true when the load tracker is active. */
bool load_tracker_enabled;

24
drivers/gpu/drm/vc4/vc4_kms.c
View File

@ -536,6 +536,9 @@ static int vc4_load_tracker_atomic_check(struct drm_atomic_state *state)
struct drm_plane *plane;
int i;
if (!vc4->load_tracker_available)
return 0;
priv_state = drm_atomic_get_private_obj_state(state,
&vc4->load_tracker);
if (IS_ERR(priv_state))
@ -683,12 +686,18 @@ 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;
/* Start with the load tracker enabled. Can be disabled through the
* debugfs load_tracker file.
if (!is_vc5) {
vc4->load_tracker_available = true;
/* Start with the load tracker enabled. Can be
* disabled through the debugfs load_tracker file.
*/
vc4->load_tracker_enabled = true;
}
sema_init(&vc4->async_modeset, 1);
@ -702,8 +711,14 @@ int vc4_kms_load(struct drm_device *dev)
return ret;
}
if (is_vc5) {
dev->mode_config.max_width = 7680;
dev->mode_config.max_height = 7680;
} else {
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
}
dev->mode_config.funcs = &vc4_mode_funcs;
dev->mode_config.preferred_depth = 24;
dev->mode_config.async_page_flip = true;
@ -718,14 +733,17 @@ int vc4_kms_load(struct drm_device *dev)
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,
drm_atomic_private_obj_init(dev, &vc4->load_tracker,
&load_state->base,
&vc4_load_tracker_state_funcs);
}
drm_mode_config_reset(dev);

5
drivers/gpu/drm/vc4/vc4_plane.c
View File

@ -516,6 +516,11 @@ static void vc4_plane_calc_load(struct drm_plane_state *state)
struct vc4_plane_state *vc4_state;
struct drm_crtc_state *crtc_state;
unsigned int vscale_factor;
struct vc4_dev *vc4;
vc4 = to_vc4_dev(state->plane->dev);
if (!vc4->load_tracker_available)
return;
vc4_state = to_vc4_plane_state(state);
crtc_state = drm_atomic_get_existing_crtc_state(state->state,