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drm/vc4: hdmi: Create a custom connector state 

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.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215154243.540115-6-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2020-12-15 16:42:39 +01:00
parent e55a077511
commit fbe7271e47
No known key found for this signature in database
GPG Key ID: E3EF0D6F671851C5
2 changed files with 40 additions and 3 deletions
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33
drivers/gpu/drm/vc4/vc4_hdmi.c
View File

@ -170,10 +170,37 @@ 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 *old_state =
conn_state_to_vc4_hdmi_conn_state(connector->state);
struct vc4_hdmi_connector_state *new_state =
kzalloc(sizeof(*new_state), GFP_KERNEL);
if (connector->state)
drm_atomic_helper_connector_tv_reset(connector);
__drm_atomic_helper_connector_destroy_state(connector->state);
kfree(old_state);
__drm_atomic_helper_connector_reset(connector, &new_state->base);
if (!new_state)
return;
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 = {
@ -181,7 +208,7 @@ static const struct drm_connector_funcs vc4_hdmi_connector_funcs = {
.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,
};

10
drivers/gpu/drm/vc4/vc4_hdmi.h
View File

@ -180,6 +180,16 @@ 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);