diff options
| author | Mayuresh Kulkarni <mkulkarni@nvidia.com> | 2012-02-03 15:06:07 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-02-13 09:27:15 -0800 |
| commit | 410041d0247db2434a3013f16930d2fcd16256c8 (patch) | |
| tree | bf70ce748d00dad01f80f199a1d82b5f31a0ba26 /include/linux | |
| parent | e8dc4bd80bf2a31b46bf2bad034dcd514c1e11f5 (diff) | |
video: tegra: host: use runtime pm for clock management
- use runtime pm for clock management of host1x
and its clients thus replacing ACM
- start a delayed worker after disabling the clock
if module supports power gating
- in its timeout handler power gate the module after saving
its context for next submit
- use auto-suspend mode of runtime pm for clock management
- pm core seems to keep a ref count on runtime pm thus
we cannot use runtime pm's usage_count as an idicator
of module idle during suspend
- do not use runtime pm call-backs during system suspend.
instead manage the clocks directly for context save of
modules that support it
- enable runtime pm only during boot-up as pm core disables
it before suspending the device and enables it after resume
for bug 887332
Change-Id: I3b30643e8e75c13684cf4edaaae4429c3a18d6eb
Signed-off-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Reviewed-on: http://git-master/r/79186
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/nvhost.h | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/include/linux/nvhost.h b/include/linux/nvhost.h index 55b75d048791..9002620a834a 100644 --- a/include/linux/nvhost.h +++ b/include/linux/nvhost.h @@ -38,13 +38,6 @@ struct nvhost_clock { long default_rate; }; -enum nvhost_device_powerstate_t { - NVHOST_POWER_STATE_DEINIT, - NVHOST_POWER_STATE_RUNNING, - NVHOST_POWER_STATE_CLOCKGATED, - NVHOST_POWER_STATE_POWERGATED -}; - struct nvhost_device { const char *name; /* Device name */ struct device dev; /* Linux device struct */ @@ -74,8 +67,7 @@ struct nvhost_device { int num_clks; /* Number of clocks opened for dev */ struct clk *clk[NVHOST_MODULE_MAX_CLOCKS]; struct mutex lock; /* Power management lock */ - int powerstate; /* Current power state */ - int refcount; /* Number of tasks active */ + bool powered; /* Current power state */ wait_queue_head_t idle_wq; /* Work queue for idle */ struct list_head client_list; /* List of clients and rate requests */ |