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authorThierry Reding <treding@nvidia.com>2015-01-28 14:29:02 +0100
committerThierry Reding <treding@nvidia.com>2015-04-02 18:46:20 +0200
commitb4a20144e0c0a45431695fa5968ce2ed8c9ce6ca (patch)
treeb88e8ff21a35d398d18b1bb7725a80f307c51bfc /drivers/gpu
parentdrm/tegra: sor: Dump registers via debugfs (diff)
downloadlinux-b4a20144e0c0a45431695fa5968ce2ed8c9ce6ca.tar.xz
linux-b4a20144e0c0a45431695fa5968ce2ed8c9ce6ca.zip
gpu: host1x: Export host1x_syncpt_read()
This function is used to read the current value of the syncpt and is useful in situations where drivers don't schedule work and wait for the syncpoint to increment. One particular use-case is using the syncpoint as a VBLANK counter. Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/host1x/syncpt.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index b10550ee1d89..6b7fdc1e2ed0 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -425,6 +425,12 @@ u32 host1x_syncpt_read_min(struct host1x_syncpt *sp)
}
EXPORT_SYMBOL(host1x_syncpt_read_min);
+u32 host1x_syncpt_read(struct host1x_syncpt *sp)
+{
+ return host1x_syncpt_load(sp);
+}
+EXPORT_SYMBOL(host1x_syncpt_read);
+
int host1x_syncpt_nb_pts(struct host1x *host)
{
return host->info->nb_pts;