Unverified Commit ee2f7c9d authored by Marek Vasut's avatar Marek Vasut Committed by Robert Foss
Browse files

drm/bridge: lt9611: Add atomic_get_input_bus_fmts 



Implement .atomic_get_input_bus_fmts callback, which sets up
the input (scanout-engine-end) formats, so that those formats
can then be used in pipeline format negotiation between this
bridge and the scanout engine.

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarRobert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220331153923.14314-2-marex@denx.de
parent 97d7ca79

drivers/gpu/drm/bridge/lontium-lt9611.c

+27 −0
Original line number Diff line number Diff line
@@ -922,6 +922,32 @@ static void lt9611_bridge_hpd_enable(struct drm_bridge *bridge) 
	lt9611_enable_hpd_interrupts(lt9611);

}



#define MAX_INPUT_SEL_FORMATS	1



static u32 *

lt9611_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(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),

			     GFP_KERNEL);

	if (!input_fmts)

		return NULL;



	/* This is the DSI-end bus format */

	input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;

	*num_input_fmts = 1;



	return input_fmts;

}



static const struct drm_bridge_funcs lt9611_bridge_funcs = {

	.attach = lt9611_bridge_attach,

	.mode_valid = lt9611_bridge_mode_valid,
@@ -936,6 +962,7 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = { 
	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,

	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,

	.atomic_reset = drm_atomic_helper_bridge_reset,

	.atomic_get_input_bus_fmts = lt9611_atomic_get_input_bus_fmts,

};



static int lt9611_parse_dt(struct device *dev,