106 lines
3.3 KiB
Diff
106 lines
3.3 KiB
Diff
From 0d33c9d1bf2f8eddefb00b426d47c0cb087aa173 Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Mon, 14 Jun 2021 15:28:30 +0200
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Subject: [PATCH] drm/vc4: hvs: Force modeset on gamma lut change
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The HVS Gamma block can only be updated when idle, so we need to disable
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the HVS channel when the gamma property is set in an atomic commit.
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Since the pixelvalve cannot have its assigned channel halted without
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stalling unless it's disabled as well, in our case that means forcing a
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full disable / enable cycle on the pipeline.
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_crtc.c | 17 +++++++++++++++++
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drivers/gpu/drm/vc4/vc4_drv.h | 3 +++
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drivers/gpu/drm/vc4/vc4_hvs.c | 32 +++++++++++++++++++++++++++++++-
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3 files changed, 51 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_crtc.c
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+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
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@@ -294,6 +294,23 @@ struct drm_encoder *vc4_get_crtc_encoder
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return NULL;
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}
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+#define drm_for_each_connector_mask(connector, dev, connector_mask) \
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+ list_for_each_entry((connector), &(dev)->mode_config.connector_list, head) \
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+ for_each_if ((connector_mask) & drm_connector_mask(connector))
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+
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+struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc,
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+ struct drm_crtc_state *state)
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+{
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+ struct drm_connector *connector;
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+
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+ WARN_ON(hweight32(state->connector_mask) > 1);
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+
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+ drm_for_each_connector_mask(connector, crtc->dev, state->connector_mask)
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+ return connector;
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+
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+ return NULL;
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+}
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+
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static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc)
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{
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struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
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--- a/drivers/gpu/drm/vc4/vc4_drv.h
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+++ b/drivers/gpu/drm/vc4/vc4_drv.h
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@@ -568,6 +568,9 @@ vc4_crtc_to_vc4_pv_data(const struct vc4
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return container_of(data, struct vc4_pv_data, base);
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}
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+struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc,
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+ struct drm_crtc_state *state);
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+
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struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
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struct drm_crtc_state *state);
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--- a/drivers/gpu/drm/vc4/vc4_hvs.c
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+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
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@@ -542,6 +542,36 @@ void vc4_hvs_stop_channel(struct drm_dev
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SCALER_DISPSTATX_EMPTY);
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}
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+static int vc4_hvs_gamma_check(struct drm_crtc *crtc,
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+ struct drm_atomic_state *state)
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+{
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+ struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
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+ struct drm_connector_state *conn_state;
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+ struct drm_connector *connector;
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+ struct drm_device *dev = crtc->dev;
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+ struct vc4_dev *vc4 = to_vc4_dev(dev);
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+
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+ if (!vc4->hvs->hvs5)
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+ return 0;
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+
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+ if (!crtc_state->color_mgmt_changed)
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+ return 0;
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+
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+ connector = vc4_get_crtc_connector(crtc, crtc_state);
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+ if (!connector)
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+ return -EINVAL;
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+
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+ if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA))
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+ return 0;
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+
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+ conn_state = drm_atomic_get_connector_state(state, connector);
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+ if (!conn_state)
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+ return -EINVAL;
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+
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+ crtc_state->mode_changed = true;
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+ return 0;
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+}
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+
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int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state)
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{
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struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
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@@ -572,7 +602,7 @@ int vc4_hvs_atomic_check(struct drm_crtc
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if (ret)
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return ret;
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- return 0;
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+ return vc4_hvs_gamma_check(crtc, state);
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}
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static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
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