msm: mdss: implement overlay prepare ioctl
Overlay prepare will allow a full frame with multiple overlays to be
configured at once and perform frame level checks before being pushed to
display. This function guarantees that if the call is successful, the
frame can be displayed successfully on the screen when display commit is
called.
Change-Id: I276b6fe3e0a872a2e93170f3cea1002d3ce0dac9
Signed-off-by: Adrian Salido-Moreno <adrianm@codeaurora.org>
Signed-off-by: Anusha Koduru <kanusha@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index 45975f9..08b25a5 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -79,7 +79,8 @@
#define MSMFB_WRITEBACK_SET_MIRRORING_HINT _IOW(MSMFB_IOCTL_MAGIC, 167, \
unsigned int)
#define MSMFB_ASYNC_BLIT _IOW(MSMFB_IOCTL_MAGIC, 168, unsigned int)
-
+#define MSMFB_OVERLAY_PREPARE _IOWR(MSMFB_IOCTL_MAGIC, 169, \
+ struct mdp_overlay_list)
#define FB_TYPE_3D_PANEL 0x10101010
#define MDP_IMGTYPE2_START 0x10000
#define MSMFB_DRIVER_VERSION 0xF9E8D701
@@ -1010,6 +1011,24 @@
struct mdp_rect roi;
};
+/**
+* struct mdp_overlay_list - argument for ioctl MSMFB_OVERLAY_PREPARE
+* @num_overlays: Number of overlay layers as part of the frame.
+* @overlay_list: Pointer to a list of overlay structures identifying
+* the layers as part of the frame
+* @flags: Flags can be used to extend behavior.
+* @processed_overlays: Output parameter indicating how many pipes were
+* successful. If there are no errors this number should
+* match num_overlays. Otherwise it will indicate the last
+* successful index for overlay that couldn't be set.
+*/
+struct mdp_overlay_list {
+ uint32_t num_overlays;
+ struct mdp_overlay **overlay_list;
+ uint32_t flags;
+ uint32_t processed_overlays;
+};
+
struct mdp_page_protection {
uint32_t page_protection;
};