msm: display: Buffer sync point support
Add MSMFB_BUFFER_SYNC ioctl for the communication of
the acquired and released fence fd between kernel and hwc.
Wait for acquired fence before pan display.
Release the previous released fence after pan display
Change-Id: I6534aed574a025d948581e70465f06a86b46c868
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index 2519a6e..cca6185 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -70,6 +70,7 @@
#define MSMFB_MDP_PP _IOWR(MSMFB_IOCTL_MAGIC, 156, struct msmfb_mdp_pp)
#define MSMFB_OVERLAY_VSYNC_CTRL _IOW(MSMFB_IOCTL_MAGIC, 160, unsigned int)
#define MSMFB_VSYNC_CTRL _IOW(MSMFB_IOCTL_MAGIC, 161, unsigned int)
+#define MSMFB_BUFFER_SYNC _IOW(MSMFB_IOCTL_MAGIC, 162, struct mdp_buf_sync)
#define FB_TYPE_3D_PANEL 0x10101010
#define MDP_IMGTYPE2_START 0x10000
#define MSMFB_DRIVER_VERSION 0xF9E8D701
@@ -484,6 +485,14 @@
} data;
};
+#define MDP_MAX_FENCE_FD 4
+
+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;