diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch b/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch new file mode 100644 index 0000000000..df9f912731 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch @@ -0,0 +1,105 @@ +From 0d33c9d1bf2f8eddefb00b426d47c0cb087aa173 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime@cerno.tech> +Date: Mon, 14 Jun 2021 15:28:30 +0200 +Subject: [PATCH] drm/vc4: hvs: Force modeset on gamma lut change + +The HVS Gamma block can only be updated when idle, so we need to disable +the HVS channel when the gamma property is set in an atomic commit. + +Since the pixelvalve cannot have its assigned channel halted without +stalling unless it's disabled as well, in our case that means forcing a +full disable / enable cycle on the pipeline. + +Signed-off-by: Maxime Ripard <maxime@cerno.tech> +--- + drivers/gpu/drm/vc4/vc4_crtc.c | 17 +++++++++++++++++ + drivers/gpu/drm/vc4/vc4_drv.h | 3 +++ + drivers/gpu/drm/vc4/vc4_hvs.c | 32 +++++++++++++++++++++++++++++++- + 3 files changed, 51 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/vc4/vc4_crtc.c ++++ b/drivers/gpu/drm/vc4/vc4_crtc.c +@@ -294,6 +294,23 @@ struct drm_encoder *vc4_get_crtc_encoder + return NULL; + } + ++#define drm_for_each_connector_mask(connector, dev, connector_mask) \ ++ list_for_each_entry((connector), &(dev)->mode_config.connector_list, head) \ ++ for_each_if ((connector_mask) & drm_connector_mask(connector)) ++ ++struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc, ++ struct drm_crtc_state *state) ++{ ++ struct drm_connector *connector; ++ ++ WARN_ON(hweight32(state->connector_mask) > 1); ++ ++ drm_for_each_connector_mask(connector, crtc->dev, state->connector_mask) ++ return connector; ++ ++ return NULL; ++} ++ + static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc) + { + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); +--- a/drivers/gpu/drm/vc4/vc4_drv.h ++++ b/drivers/gpu/drm/vc4/vc4_drv.h +@@ -568,6 +568,9 @@ vc4_crtc_to_vc4_pv_data(const struct vc4 + return container_of(data, struct vc4_pv_data, base); + } + ++struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc, ++ struct drm_crtc_state *state); ++ + struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc, + struct drm_crtc_state *state); + +--- a/drivers/gpu/drm/vc4/vc4_hvs.c ++++ b/drivers/gpu/drm/vc4/vc4_hvs.c +@@ -519,6 +519,36 @@ void vc4_hvs_stop_channel(struct drm_dev + SCALER_DISPSTATX_EMPTY); + } + ++static int vc4_hvs_gamma_check(struct drm_crtc *crtc, ++ struct drm_atomic_state *state) ++{ ++ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc); ++ struct drm_connector_state *conn_state; ++ struct drm_connector *connector; ++ struct drm_device *dev = crtc->dev; ++ struct vc4_dev *vc4 = to_vc4_dev(dev); ++ ++ if (!vc4->hvs->hvs5) ++ return 0; ++ ++ if (!crtc_state->color_mgmt_changed) ++ return 0; ++ ++ connector = vc4_get_crtc_connector(crtc, crtc_state); ++ if (!connector) ++ return -EINVAL; ++ ++ if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA)) ++ return 0; ++ ++ conn_state = drm_atomic_get_connector_state(state, connector); ++ if (!conn_state) ++ return -EINVAL; ++ ++ crtc_state->mode_changed = true; ++ return 0; ++} ++ + int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state) + { + struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc); +@@ -549,7 +579,7 @@ int vc4_hvs_atomic_check(struct drm_crtc + if (ret) + return ret; + +- return 0; ++ return vc4_hvs_gamma_check(crtc, state); + } + + static void vc4_hvs_update_dlist(struct drm_crtc *crtc) |