[PATCH v2 4/6] drm/vc4: hdmi: Create a custom connector state
flat view
STALE2184d
From: Maxime Ripard <hidden>
Date: 2020-10-08 12:46:19
Also in:
dri-devel
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for vc4, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Dave Stevenson, Linus Torvalds
Revision v2 of 3 in this series.
Revisions (3)
- v1 [diff vs current]
- v2 current
- v4 [diff vs current]
When run with a higher bpc than 8, the clock of the HDMI controller needs to be adjusted. Let's create a connector state that will be used at atomic_check and atomic_enable to compute and store the clock rate associated to the state. Signed-off-by: Maxime Ripard <redacted> --- drivers/gpu/drm/vc4/vc4_hdmi.c | 27 +++++++++++++++++++++++++-- drivers/gpu/drm/vc4/vc4_hdmi.h | 10 ++++++++++ 2 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 7d2593398094..5e4ebb51a750 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c@@ -170,16 +170,39 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector) static void vc4_hdmi_connector_reset(struct drm_connector *connector) { - drm_atomic_helper_connector_reset(connector); + struct vc4_hdmi_connector_state *conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL); + + if (connector->state) + __drm_atomic_helper_connector_destroy_state(connector->state); + + kfree(connector->state); + + __drm_atomic_helper_connector_reset(connector, &conn_state->base); drm_atomic_helper_connector_tv_reset(connector); } +static struct drm_connector_state * +vc4_hdmi_connector_duplicate_state(struct drm_connector *connector) +{ + struct drm_connector_state *conn_state = connector->state; + struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state); + struct vc4_hdmi_connector_state *new_state; + + new_state = kzalloc(sizeof(*new_state), GFP_KERNEL); + if (!new_state) + return NULL; + + __drm_atomic_helper_connector_duplicate_state(connector, &new_state->base); + + return &new_state->base; +} + static const struct drm_connector_funcs vc4_hdmi_connector_funcs = { .detect = vc4_hdmi_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = vc4_hdmi_connector_destroy, .reset = vc4_hdmi_connector_reset, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, };
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 63c6f8bddf1d..d53d9fd88bfe 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h@@ -169,6 +169,16 @@ encoder_to_vc4_hdmi(struct drm_encoder *encoder) return container_of(_encoder, struct vc4_hdmi, encoder); } +struct vc4_hdmi_connector_state { + struct drm_connector_state base; +}; + +static inline struct vc4_hdmi_connector_state * +conn_state_to_vc4_hdmi_conn_state(struct drm_connector_state *conn_state) +{ + return container_of(conn_state, struct vc4_hdmi_connector_state, base); +} + void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, struct drm_display_mode *mode); void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
--
git-series 0.9.1
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