Patching the connector format is causing various problematic side effects. Implement .atomic_get_input_bus_fmts callback instead, which sets up the input (DSI-end) format, and that format can then be used in pipeline format negotiation between the DSI-end of this bridge and the other component closer to the scanout engine.
Signed-off-by: Marek Vasut <[email protected]> Cc: Adam Ford <[email protected]> Cc: Douglas Anderson <[email protected]> Cc: Frieder Schrempf <[email protected]> Cc: Jagan Teki <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Loic Poulain <[email protected]> Cc: Philippe Schenker <[email protected]> Cc: Robert Foss <[email protected]> Cc: Sam Ravnborg <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: Valentin Raevsky <[email protected]> Cc: [email protected] --- drivers/gpu/drm/bridge/ti-sn65dsi83.c | 35 ++++++++++++++++++++++++--- 1 file changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c index 750f2172ef08..32bda20f5dda 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c @@ -517,7 +517,6 @@ static bool sn65dsi83_mode_fixup(struct drm_bridge *bridge, struct drm_display_mode *adj) { struct sn65dsi83 *ctx = bridge_to_sn65dsi83(bridge); - u32 input_bus_format = MEDIA_BUS_FMT_RGB888_1X24; struct drm_encoder *encoder = bridge->encoder; struct drm_device *ddev = encoder->dev; struct drm_connector *connector; @@ -550,14 +549,37 @@ static bool sn65dsi83_mode_fixup(struct drm_bridge *bridge, connector->display_info.bus_formats[0]); break; } - - drm_display_info_set_bus_formats(&connector->display_info, - &input_bus_format, 1); } return true; } +#define MAX_INPUT_SEL_FORMATS 1 + +static u32 * +sn65dsi83_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 sn65dsi83_funcs = { .attach = sn65dsi83_attach, .pre_enable = sn65dsi83_pre_enable, @@ -567,6 +589,11 @@ static const struct drm_bridge_funcs sn65dsi83_funcs = { .mode_valid = sn65dsi83_mode_valid, .mode_set = sn65dsi83_mode_set, .mode_fixup = sn65dsi83_mode_fixup, + + .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 = sn65dsi83_atomic_get_input_bus_fmts, }; static int sn65dsi83_parse_dt(struct sn65dsi83 *ctx, enum sn65dsi83_model model) -- 2.30.2
