[PATCH 08/45] drm/amd/display: implement dc_init_callbacks to assign callback pointers after dc_create

[sunpeng.li at amd.com]

From: Wenjing Liu <Wenjing.Liu at amd.com>

[why]
Some components depend on dc to constuct
but need to assign callback functions to dc.

[how]
Instead of assigning dc callback functions in dc_create,
decouple the callback init to a standlone function after dc_create. This
is currently a no-op.

Signed-off-by: Wenjing Liu <Wenjing.Liu at amd.com>
Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 5 +++++
 drivers/gpu/drm/amd/display/dc/dc.h      | 7 ++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index d9c5798..221f253 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -844,6 +844,11 @@ struct dc *dc_create(const struct dc_init_data *init_params)
 	return NULL;
 }
 
+void dc_init_callbacks(struct dc *dc,
+		const struct dc_callback_init *init_params)
+{
+}
+
 void dc_destroy(struct dc **dc)
 {
 	destruct(*dc);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 9a1e8f6..580f752 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -339,8 +339,13 @@ struct dc_init_data {
 	uint32_t log_mask;
 };
 
-struct dc *dc_create(const struct dc_init_data *init_params);
+struct dc_callback_init {
+	uint8_t reserved;
+};
 
+struct dc *dc_create(const struct dc_init_data *init_params);
+void dc_init_callbacks(struct dc *dc,
+		const struct dc_callback_init *init_params);
 void dc_destroy(struct dc **dc);
 
 /*******************************************************************************
-- 
2.7.4