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| author | Dmitry Osipenko <digetx@gmail.com> | 2021-12-01 02:23:16 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-12-16 14:07:07 +0100 |
| commit | 9ca790f44606109071ab1a3a37ed99e91794c37c (patch) | |
| tree | 0b8989889ead1f4ee2f3b295fff9a9123adb6ff8 /include/linux/host1x.h | |
| parent | 6b6776e2ab8ac7086cf31ad339411df7681715b7 (diff) | |
| download | lwn-9ca790f44606109071ab1a3a37ed99e91794c37c.tar.gz lwn-9ca790f44606109071ab1a3a37ed99e91794c37c.zip | |
gpu: host1x: Add host1x_channel_stop()
Add host1x_channel_stop() which waits till channel becomes idle and then
stops the channel hardware. This is needed for supporting suspend/resume
by host1x drivers since the hardware state is lost after power-gating,
thus the channel needs to be stopped before client enters into suspend.
Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30
Tested-by: Paul Fertser <fercerpav@gmail.com> # PAZ00 T20
Tested-by: Nicolas Chauvet <kwizart@gmail.com> # PAZ00 T20 and TK1 T124
Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/linux/host1x.h')
| -rw-r--r-- | include/linux/host1x.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h index 2ca53d7ed7ca..e8dc5bc41f79 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -226,6 +226,7 @@ struct host1x_job; struct host1x_channel *host1x_channel_request(struct host1x_client *client); struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); +void host1x_channel_stop(struct host1x_channel *channel); void host1x_channel_put(struct host1x_channel *channel); int host1x_job_submit(struct host1x_job *job); |