tree 1aa38dc7ff5ed6250c2c69291826664c1563e5f5
parent a4cd8f229ff71db0c95c0d96381d4fb9239fdb19
author Steve Longerbeam <slongerbeam@gmail.com> 1403744740 -0700
committer Philipp Zabel <p.zabel@pengutronix.de> 1409662548 +0200

gpu: ipu-v3: Add ipu_idmac_buffer_is_ready()

Add ipu_idmac_buffer_is_ready(), returns true if the given buffer in
the given channel is set ready (owned by IPU), or false if not ready
(owned by CPU core).

Support has been added for third buffer, there is no support yet for
triple-buffering in idmac channels, but this function checks
buffer-ready for third buffer in case this support is added later.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>