msm: mdss: sync point support
MSMFB_BUFFER_SYNC ioctl is added for hwc to pass
in buffer fence, driver creates release fence and
return to hwc.
Before display update, driver waits for the fence to
be signaled. Signal the release fence after update is done.
Change-Id: I3d8cd5e8df1f0415832507d19cf629f4c0432164
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index d3f6792..6736136 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -72,6 +72,7 @@
#define MSMFB_VSYNC_CTRL _IOW(MSMFB_IOCTL_MAGIC, 161, unsigned int)
#define MSMFB_METADATA_SET _IOW(MSMFB_IOCTL_MAGIC, 162, struct msmfb_metadata)
#define MSMFB_OVERLAY_COMMIT _IO(MSMFB_IOCTL_MAGIC, 163)
+#define MSMFB_BUFFER_SYNC _IOW(MSMFB_IOCTL_MAGIC, 164, struct mdp_buf_sync)
#define FB_TYPE_3D_PANEL 0x10101010
#define MDP_IMGTYPE2_START 0x10000
@@ -551,6 +552,17 @@
struct mdp_blend_cfg blend_cfg;
} data;
};
+
+#define MDP_MAX_FENCE_FD 10
+#define MDP_BUF_SYNC_FLAG_WAIT 1
+
+struct mdp_buf_sync {
+ uint32_t flags;
+ uint32_t acq_fen_fd_cnt;
+ int *acq_fen_fd;
+ int *rel_fen_fd;
+};
+
struct mdp_page_protection {
uint32_t page_protection;
};