Unverified Commit 7978ec7d authored by Aradhya Bhatia's avatar Aradhya Bhatia Committed by Javier Martinez Canillas
Browse files

drm/bridge: sii902x: Support format negotiation hooks 



With new connector model, sii902x will not create the connector, when
DRM_BRIDGE_ATTACH_NO_CONNECTOR is set 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 selected to MEDIA_BUS_FMT_RGB888_1X24 as default, as is
the case with older model.

Signed-off-by: default avatarAradhya Bhatia <a-bhatia1@ti.com>
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: default avatarTomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606082142.23760-6-a-bhatia1@ti.com
parent 1934bf53

drivers/gpu/drm/bridge/sii902x.c

+25 −0
Original line number Diff line number Diff line
@@ -473,6 +473,27 @@ static struct edid *sii902x_bridge_get_edid(struct drm_bridge *bridge, 
	return sii902x_get_edid(sii902x, connector);

}



static u32 *sii902x_bridge_atomic_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)

{

	u32 *input_fmts;



	*num_input_fmts = 0;



	input_fmts = kcalloc(1, sizeof(*input_fmts), GFP_KERNEL);

	if (!input_fmts)

		return NULL;



	input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;

	*num_input_fmts = 1;



	return input_fmts;

}



static const struct drm_bridge_funcs sii902x_bridge_funcs = {

	.attach = sii902x_bridge_attach,

	.mode_set = sii902x_bridge_mode_set,
@@ -480,6 +501,10 @@ static const struct drm_bridge_funcs sii902x_bridge_funcs = { 
	.enable = sii902x_bridge_enable,

	.detect = sii902x_bridge_detect,

	.get_edid = sii902x_bridge_get_edid,

	.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 = sii902x_bridge_atomic_get_input_bus_fmts,

};



static int sii902x_mute(struct sii902x *sii902x, bool mute)