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drm/bridge: tfp410: Support format negotiation hooks

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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.

Input format is the one selected by the bridge from DT properties.

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
[a-bhatia1: Removed output fmt condition check]
Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606082142.23760-2-a-bhatia1@ti.com
This commit is contained in:
Nikhil Devshatwar 2023-06-06 13:51:35 +05:30 committed by Javier Martinez Canillas
parent 70d3c92d85
commit fdf1d8e299
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GPG Key ID: C751E590D63F3D69
1 changed files with 26 additions and 0 deletions
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26
drivers/gpu/drm/bridge/ti-tfp410.c
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@ -206,12 +206,38 @@ 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;
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 = {