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| author | David Lin <dtwlin@google.com> | 2016-07-14 15:13:00 -0500 |
|---|---|---|
| committer | Alex Elder <elder@linaro.org> | 2016-07-14 16:53:55 -0500 |
| commit | 61e13db9cc8945d53f72d4021594ee3be214e667 (patch) | |
| tree | 29dd0a9dcfedf78e99de80833d65870eab32cae0 /drivers/staging/greybus/bundle.h | |
| parent | 30a3bf7b30d86b94ad4fbdcf9cdce1dcf5037c58 (diff) | |
| download | linux-61e13db9cc8945d53f72d4021594ee3be214e667.tar.gz linux-61e13db9cc8945d53f72d4021594ee3be214e667.tar.bz2 linux-61e13db9cc8945d53f72d4021594ee3be214e667.zip | |
greybus: bundle: add runtime pm support
This patch adds runtime pm support for the bundle core. Unbound bundle
devices are always deactivated. During probe, Runtime PM status is set
to enabled and active and the usage count is incremented. If the driver
supports runtime PM, it should call pm_runtime_put() in its probe
routine and pm_runtime_get_sync() in remove routine as bundle needs to
be resume before it can be deactivated.
Testing Done:
- Check runtime_status of the bundle driver when bundle goes to suspend
Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Alex Elder <elder@linaro.org>
Diffstat (limited to 'drivers/staging/greybus/bundle.h')
| -rw-r--r-- | drivers/staging/greybus/bundle.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/staging/greybus/bundle.h b/drivers/staging/greybus/bundle.h index 3895f94f43c4..349845ee893c 100644 --- a/drivers/staging/greybus/bundle.h +++ b/drivers/staging/greybus/bundle.h @@ -40,4 +40,51 @@ struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id, int gb_bundle_add(struct gb_bundle *bundle); void gb_bundle_destroy(struct gb_bundle *bundle); +/* Bundle Runtime PM wrappers */ +#ifdef CONFIG_PM_RUNTIME +static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle) +{ + int retval; + + retval = pm_runtime_get_sync(&bundle->dev); + if (retval < 0) { + dev_err(&bundle->dev, + "pm_runtime_get_sync failed: %d\n", retval); + pm_runtime_put_noidle(&bundle->dev); + return retval; + } + + return 0; +} + +static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle) +{ + int retval; + + pm_runtime_mark_last_busy(&bundle->dev); + retval = pm_runtime_put_autosuspend(&bundle->dev); + + return retval; +} + +static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) +{ + pm_runtime_get_noresume(&bundle->dev); +} + +static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) +{ + pm_runtime_put_noidle(&bundle->dev); +} + +#else +static inline int gb_pm_runtime_get_sync(struct gb_bundle *bundle) +{ return 0; } +static inline int gb_pm_runtime_put_autosuspend(struct gb_bundle *bundle) +{ return 0; } + +static inline void gb_pm_runtime_get_noresume(struct gb_bundle *bundle) {} +static inline void gb_pm_runtime_put_noidle(struct gb_bundle *bundle) {} +#endif + #endif /* __BUNDLE_H */ |