1
0
Fork 0
alistair23-linux/drivers/hwtracing/stm
Alexander Shishkin 8e0469a4f3 stm class: Add runtime power management handling
Currently, there's no runtime pm in stm class devices, which makes it
harder for the underlying hardware drivers to handle their power
management.

This patch applies the following runtime pm policy to stm class devices,
which their parents can rely on for their power management tracking:

  * device is in use during character device writes,
  * delayed autosuspend is used to keep it active between adjacent
  writes,
  * device is in use while mmio regions are mapped,
  * device is is use while any stm_source devices are linked to it.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Chunyan Zhang <zhang.chunyan@linaro.org>
2016-07-01 11:00:14 +03:00
..
Kconfig stm class: Add heartbeat stm source device 2016-02-20 14:09:14 -08:00
Makefile stm class: Add heartbeat stm source device 2016-02-20 14:09:14 -08:00
console.c stm class: stm_console: Add kernel-console-over-stm driver 2015-10-04 20:28:58 +01:00
core.c stm class: Add runtime power management handling 2016-07-01 11:00:14 +03:00
dummy_stm.c stm class: dummy_stm: Make nr_dummies parameter read-only 2016-04-08 16:11:50 +03:00
heartbeat.c stm class: stm_heartbeat: Make nr_devs parameter read-only 2016-04-08 16:11:51 +03:00
policy.c stm class: Remove unnecessary pointer increment 2016-04-08 16:11:54 +03:00
stm.h stm class: Guard output assignment against concurrency 2016-02-20 14:09:14 -08:00