With new connector model, tfp410 will not create the connector and SoC driver will rely on format negotiation to setup the encoder format.
Support format negotiations hooks in the drm_bridge_funcs. Use helper functions for state management. Support one of the two RGB formats as selected from DT bindings.
Signed-off-by: Nikhil Devshatwar nikhil.nd@ti.com --- drivers/gpu/drm/bridge/ti-tfp410.c | 32 ++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index ba3fa2a9b8a4..b65e48e080c7 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -204,12 +204,44 @@ static enum drm_mode_status tfp410_mode_valid(struct drm_bridge *bridge, return MODE_OK; }
+static u32 *tfp410_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + struct tfp410 *dvi = drm_bridge_to_tfp410(bridge); + u32 *input_fmts; + + *num_input_fmts = 0; + + /* + * This bridge does not support media_bus_format conversion + * Propagate only if supported + */ + if (output_fmt != dvi->bus_format && output_fmt != MEDIA_BUS_FMT_FIXED) + return NULL; + + input_fmts = kzalloc(sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + + *num_input_fmts = 1; + input_fmts[0] = dvi->bus_format; + return input_fmts; +} + static const struct drm_bridge_funcs tfp410_bridge_funcs = { .attach = tfp410_attach, .detach = tfp410_detach, .enable = tfp410_enable, .disable = tfp410_disable, .mode_valid = tfp410_mode_valid, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_get_input_bus_fmts = tfp410_get_input_bus_fmts, };
static const struct drm_bridge_timings tfp410_default_timings = {