diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0546-drm-vc4-drv-Support-BCM2711.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0546-drm-vc4-drv-Support-BCM2711.patch | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0546-drm-vc4-drv-Support-BCM2711.patch b/target/linux/bcm27xx/patches-5.4/950-0546-drm-vc4-drv-Support-BCM2711.patch new file mode 100644 index 0000000000..00bac3a2b9 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0546-drm-vc4-drv-Support-BCM2711.patch @@ -0,0 +1,109 @@ +From d52f29a5e0ee9882f6f734c057224686b9820152 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Thu, 6 Feb 2020 15:40:34 +0100 +Subject: [PATCH] drm/vc4: drv: Support BCM2711 + +The BCM2711 has a reworked display pipeline, and the load tracker needs +some adjustement 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> +--- + drivers/gpu/drm/vc4/vc4_drv.c | 1 + + drivers/gpu/drm/vc4/vc4_drv.h | 3 +++ + drivers/gpu/drm/vc4/vc4_kms.c | 32 +++++++++++++++++++++----------- + drivers/gpu/drm/vc4/vc4_plane.c | 5 +++++ + 4 files changed, 30 insertions(+), 11 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_drv.c ++++ b/drivers/gpu/drm/vc4/vc4_drv.c +@@ -368,6 +368,7 @@ static int vc4_platform_drm_remove(struc + } + + static const struct of_device_id vc4_of_match[] = { ++ { .compatible = "brcm,bcm2711-vc5", }, + { .compatible = "brcm,bcm2835-vc4", }, + { .compatible = "brcm,cygnus-vc4", }, + {}, +--- a/drivers/gpu/drm/vc4/vc4_drv.h ++++ b/drivers/gpu/drm/vc4/vc4_drv.h +@@ -205,6 +205,9 @@ 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; + +--- a/drivers/gpu/drm/vc4/vc4_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_kms.c +@@ -421,6 +421,9 @@ static int vc4_load_tracker_atomic_check + 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)) +@@ -520,10 +523,14 @@ int vc4_kms_load(struct drm_device *dev) + struct vc4_load_tracker_state *load_state; + int ret; + +- /* Start with the load tracker enabled. Can be disabled through the +- * debugfs load_tracker file. +- */ +- vc4->load_tracker_enabled = true; ++ if (!of_device_is_compatible(dev->dev->of_node, "brcm,bcm2711-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); + +@@ -560,14 +567,17 @@ int vc4_kms_load(struct drm_device *dev) + drm_atomic_private_obj_init(dev, &vc4->ctm_manager, &ctm_state->base, + &vc4_ctm_state_funcs); + +- load_state = kzalloc(sizeof(*load_state), GFP_KERNEL); +- if (!load_state) { +- drm_atomic_private_obj_fini(&vc4->ctm_manager); +- return -ENOMEM; +- } ++ 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); ++ drm_atomic_private_obj_init(dev, &vc4->load_tracker, ++ &load_state->base, ++ &vc4_load_tracker_state_funcs); ++ } + + drm_mode_config_reset(dev); + +--- a/drivers/gpu/drm/vc4/vc4_plane.c ++++ b/drivers/gpu/drm/vc4/vc4_plane.c +@@ -492,6 +492,11 @@ static void vc4_plane_calc_load(struct d + 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, |