diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2014-03-18 22:51:59 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-03 19:20:24 -0400 |
| commit | 964a2331e9a207fc15ef9eef833212347498bea1 (patch) | |
| tree | 1c444ed7f440d280c84140ec7e142c7713bb7896 /drivers/misc/mei/hw-me.c | |
| parent | ee7e5afd2c369b64ffcf419d38ce7ad1c709a53e (diff) | |
mei: expose hardware power gating state to mei layer
Since the runtime pm and the internal power gating
cannot be in complete sync in regards to I/O
operations, we need to expose the device
hardware internal power gating state to mei layer
2. We add pg_state handler that translate the hw
internal pg state to mei layer
2. We add power gating event variable to keep
power track of power gating transitions
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Reviewed-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 7a7e66250dfd..02f3b0c3a2a3 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -113,6 +113,19 @@ static void mei_me_hw_config(struct mei_device *dev) /* Doesn't change in runtime */ dev->hbuf_depth = (hcsr & H_CBD) >> 24; } + +/** + * mei_me_pg_state - translate internal pg state + * to the mei power gating state + * + * @hw - me hardware + * returns: MEI_PG_OFF if aliveness is on and MEI_PG_ON otherwise + */ +static inline enum mei_pg_state mei_me_pg_state(struct mei_device *dev) +{ + return MEI_PG_OFF; +} + /** * mei_clear_interrupts - clear and stop interrupts * @@ -601,6 +614,8 @@ end: } static const struct mei_hw_ops mei_me_hw_ops = { + .pg_state = mei_me_pg_state, + .host_is_ready = mei_me_host_is_ready, .hw_is_ready = mei_me_hw_is_ready, |