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authorAndrea Merello <andrea.merello@gmail.com>2016-08-25 11:04:34 +0200
committerArchit Taneja <architt@codeaurora.org>2016-08-29 09:15:37 +0530
commit315486c665333a49be20643c9137d9641f32e2b7 (patch)
tree22d521e7f37a24b2ec1513da550df420015c9273 /drivers/gpu/drm/drm_simple_kms_helper.c
parent4f993973d274151975a59f50dc509ca6598be501 (diff)
drm: simple_kms_helper: add support for bridges
Introduce drm_simple_display_pipe_attach_bridge() and drm_simple_display_pipe_detach_bridge() in order to make it possible to use drm encoders with the simple display pipes managed by simple_kms_helpers Suggested-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Andrea Merello <andrea.merello@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Archit Taneja <architt@codeaurora.org> Link: http://patchwork.freedesktop.org/patch/msgid/1472115874-6219-3-git-send-email-andrea.merello@gmail.com
Diffstat (limited to 'drivers/gpu/drm/drm_simple_kms_helper.c')
-rw-r--r--drivers/gpu/drm/drm_simple_kms_helper.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
index 3301e4a9f7cd..7b6d26e64977 100644
--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@@ -140,6 +140,46 @@ static const struct drm_plane_funcs drm_simple_kms_plane_funcs = {
};
/**
+ * drm_simple_display_pipe_attach_bridge - Attach a bridge to the display pipe
+ * @pipe: simple display pipe object
+ * @bridge: bridge to attach
+ *
+ * Makes it possible to still use the drm_simple_display_pipe helpers when
+ * a DRM bridge has to be used.
+ *
+ * Note that you probably want to initialize the pipe by passing a NULL
+ * connector to drm_simple_display_pipe_init().
+ *
+ * Returns:
+ * Zero on success, negative error code on failure.
+ */
+int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe,
+ struct drm_bridge *bridge)
+{
+ bridge->encoder = &pipe->encoder;
+ pipe->encoder.bridge = bridge;
+ return drm_bridge_attach(pipe->encoder.dev, bridge);
+}
+EXPORT_SYMBOL(drm_simple_display_pipe_attach_bridge);
+
+/**
+ * drm_simple_display_pipe_detach_bridge - Detach the bridge from the display pipe
+ * @pipe: simple display pipe object
+ *
+ * Detaches the drm bridge previously attached with
+ * drm_simple_display_pipe_attach_bridge()
+ */
+void drm_simple_display_pipe_detach_bridge(struct drm_simple_display_pipe *pipe)
+{
+ if (WARN_ON(!pipe->encoder.bridge))
+ return;
+
+ drm_bridge_detach(pipe->encoder.bridge);
+ pipe->encoder.bridge = NULL;
+}
+EXPORT_SYMBOL(drm_simple_display_pipe_detach_bridge);
+
+/**
* drm_simple_display_pipe_init - Initialize a simple display pipeline
* @dev: DRM device
* @pipe: simple display pipe object to initialize