From 4f993973d274151975a59f50dc509ca6598be501 Mon Sep 17 00:00:00 2001 From: Andrea Merello Date: Thu, 25 Aug 2016 11:04:33 +0200 Subject: drm: simple_kms_helper: make connector optional at init time drm_simple_display_pipe_init() pretends to attach a connector to the display pipe. In case a drm bridge has to be used, then it's the bridge that takes care of connectors. This patch makes the connector parameter optional for drm_simple_display_pipe_init(), so that a drm bridge could handle connector by itself later. Signed-off-by: Andrea Merello Reviewed-by: Daniel Vetter Cc: David Airlie Cc: Noralf Trønnes Cc: Daniel Vetter Signed-off-by: Archit Taneja Link: http://patchwork.freedesktop.org/patch/msgid/1472115874-6219-2-git-send-email-andrea.merello@gmail.com --- drivers/gpu/drm/drm_simple_kms_helper.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/drm_simple_kms_helper.c') diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 447631018426..3301e4a9f7cd 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -146,10 +146,15 @@ static const struct drm_plane_funcs drm_simple_kms_plane_funcs = { * @funcs: callbacks for the display pipe (optional) * @formats: array of supported formats (DRM_FORMAT\_\*) * @format_count: number of elements in @formats - * @connector: connector to attach and register + * @connector: connector to attach and register (optional) * * Sets up a display pipeline which consist of a really simple - * plane-crtc-encoder pipe coupled with the provided connector. + * plane-crtc-encoder pipe. + * + * If a connector is supplied, the pipe will be coupled with the provided + * connector. You may supply a NULL connector when using drm bridges, that + * handle connectors themselves (see drm_simple_display_pipe_attach_bridge()). + * * Teardown of a simple display pipe is all handled automatically by the drm * core through calling drm_mode_config_cleanup(). Drivers afterwards need to * release the memory for the structure themselves. @@ -188,7 +193,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev, encoder->possible_crtcs = 1 << drm_crtc_index(crtc); ret = drm_encoder_init(dev, encoder, &drm_simple_kms_encoder_funcs, DRM_MODE_ENCODER_NONE, NULL); - if (ret) + if (ret || !connector) return ret; return drm_mode_connector_attach_encoder(connector, encoder); -- cgit v1.2.3-55-g7522