blob: 5454f47bbbb9eb59202efc352d0a66bfc07bff9d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
From 1b3c451528349438ba619900e88d543caed9b597 Mon Sep 17 00:00:00 2001
From: Wenjing Liu <Wenjing.Liu@amd.com>
Date: Fri, 29 Mar 2019 18:22:16 -0400
Subject: [PATCH 1809/2940] drm/amd/display: Add function to copy DC streams
We'll need the ability to copy a dc_stream_state for some features.
Implement it here.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
.../gpu/drm/amd/display/dc/core/dc_stream.c | 21 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc_stream.h | 2 ++
2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index e10479d58c11..09d765f359b0 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -163,6 +163,27 @@ struct dc_stream_state *dc_create_stream_for_sink(
return stream;
}
+struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream)
+{
+ struct dc_stream_state *new_stream;
+
+ new_stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL);
+ if (stream == NULL)
+ return NULL;
+
+ memcpy(new_stream, stream, sizeof(struct dc_stream_state));
+
+ if (new_stream->sink)
+ dc_sink_retain(new_stream->sink);
+
+ if (new_stream->out_transfer_func)
+ dc_transfer_func_retain(new_stream->out_transfer_func);
+
+ kref_init(&new_stream->refcount);
+
+ return new_stream;
+}
+
/**
* dc_stream_get_status_from_state - Get stream status from given dc state
* @state: DC state to find the stream status in
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index 17fa3bf6cf7b..189bdab929a5 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -307,6 +307,8 @@ enum surface_update_type dc_check_update_surfaces_for_stream(
*/
struct dc_stream_state *dc_create_stream_for_sink(struct dc_sink *dc_sink);
+struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream);
+
void update_stream_signal(struct dc_stream_state *stream, struct dc_sink *sink);
void dc_stream_retain(struct dc_stream_state *dc_stream);
--
2.17.1
|
