gpu: omap_hwc: Adds a flag to hint omaplfb a blit FB is needed

When HWC generates blits a DSS pipe is configured and assigned
for the blit framebuffer, this patch adds a flag to give a
hint to omaplfb to use such pipe when it is present.

This helps in situations where there are not blits but blit
buffers to synchronize with and a blit buffer must be used.
In such case the rgz_items and num_ovls from dsscomp where not
enough data to recognize this scenario.

Change-Id: I2bcb13e6341189528f4ffd73c03badd431afbf15
Signed-off-by: Gustavo Diaz Prado <a0273371@ti.com>
Signed-off-by: Sundar Raman <sunds@ti.com>

diff --git a/include/video/omap_hwc.h b/include/video/omap_hwc.h
index cea2d73b8847432dd9bf04c0aa83d9209c8f1c65..8c932ce3c70d33a00876df8522628424f03cf692 100644 (file)
--- a/include/video/omap_hwc.h
+++ b/include/video/omap_hwc.h
@@ -83,6 +83,10 @@
 #define HWC_BLT_DESC_FB_FN(ovlno) \
        (HWC_BLT_DESC_FLAG | HWC_BLT_DESC_FB | (ovlno))
 
+/*
+ * This flag hints OMAPLFB the HWC has configured a DSS pipe for a blit FB
+ */
+#define HWC_BLT_FLAG_USE_FB (1 << 0)
 
 /*****************************************************************************/
 /* WARNING - These structs must keep in sync with user space code            */
@@ -97,6 +101,7 @@ struct rgz_blt_entry {
 };
 
 struct omap_hwc_blit_data {
+       __u16 rgz_flags;
        /* if rgz_items is 0 there is nothing to blit */
        __u16 rgz_items;
        struct rgz_blt_entry rgz_blts[0];