gpu: host1x: Add syncpoint base support

This patch adds support for hardware syncpoint bases. This creates
a simple mechanism to stall the command FIFO until an operation is
completed.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index eb713dbbae29..f5b9b87ac9a9 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -125,7 +125,9 @@ static inline void host1x_bo_kunmap(struct host1x_bo *bo,
  */
 
 #define HOST1X_SYNCPT_CLIENT_MANAGED    (1 << 0)
+#define HOST1X_SYNCPT_HAS_BASE          (1 << 1)
 
+struct host1x_syncpt_base;
 struct host1x_syncpt;
 struct host1x;
 
@@ -140,6 +142,9 @@ struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
                                             unsigned long flags);
 void host1x_syncpt_free(struct host1x_syncpt *sp);
 
+struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp);
+u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base);
+
 /*
  * host1x channel
  */