drm/tegra: Deliver syncpoint base to user space

This patch adds a separate ioctl for delivering syncpoint base number
to user space. If the syncpoint does not have an associated base, the
function returns -ENXIO.

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, 17 insertions, 9 deletions

diff --git a/include/uapi/drm/tegra_drm.h b/include/uapi/drm/tegra_drm.h
index 0f8575f58db8..5e1ab552cbed 100644
--- a/include/uapi/drm/tegra_drm.h
+++ b/include/uapi/drm/tegra_drm.h
@@ -68,6 +68,12 @@ struct drm_tegra_get_syncpt {
         __u32 id;
 };
 
+struct drm_tegra_get_syncpt_base {
+        __u64 context;
+        __u32 syncpt;
+        __u32 id;
+};
+
 struct drm_tegra_syncpt {
         __u32 id;
         __u32 incrs;
@@ -118,15 +124,16 @@ struct drm_tegra_submit {
         __u32 reserved[5];      /* future expansion */
 };
 
-#define DRM_TEGRA_GEM_CREATE    0x00
-#define DRM_TEGRA_GEM_MMAP      0x01
-#define DRM_TEGRA_SYNCPT_READ   0x02
-#define DRM_TEGRA_SYNCPT_INCR   0x03
-#define DRM_TEGRA_SYNCPT_WAIT   0x04
-#define DRM_TEGRA_OPEN_CHANNEL  0x05
-#define DRM_TEGRA_CLOSE_CHANNEL 0x06
-#define DRM_TEGRA_GET_SYNCPT    0x07
-#define DRM_TEGRA_SUBMIT        0x08
+#define DRM_TEGRA_GEM_CREATE            0x00
+#define DRM_TEGRA_GEM_MMAP              0x01
+#define DRM_TEGRA_SYNCPT_READ           0x02
+#define DRM_TEGRA_SYNCPT_INCR           0x03
+#define DRM_TEGRA_SYNCPT_WAIT           0x04
+#define DRM_TEGRA_OPEN_CHANNEL          0x05
+#define DRM_TEGRA_CLOSE_CHANNEL         0x06
+#define DRM_TEGRA_GET_SYNCPT            0x07
+#define DRM_TEGRA_SUBMIT                0x08
+#define DRM_TEGRA_GET_SYNCPT_BASE       0x09
 
 #define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
 #define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
@@ -137,5 +144,6 @@ struct drm_tegra_submit {
 #define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_open_channel)
 #define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
 #define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
+#define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base)
 
 #endif