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| author | Adrian Hunter <adrian.hunter@intel.com> | 2026-08-07 17:56:33 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-08-08 15:04:19 +0200 |
| commit | ff2b20f8f1ff9680ca1fce315e1d5eddd687266d (patch) | |
| tree | 54dc5d3b216ed1d5d7b3751f4bf32a213c860408 /drivers | |
| parent | 9fd18a865591d981c0081a3e663a65dbe4a64eb9 (diff) | |
| download | linux-ff2b20f8f1ff9680ca1fce315e1d5eddd687266d.tar.gz linux-ff2b20f8f1ff9680ca1fce315e1d5eddd687266d.zip | |
i3c: master: Report wakeup events for IBIs
An I3C device configured as a wakeup source can wake the system by
generating an In-Band Interrupt (IBI).
When an IBI is queued for processing, record a wakeup event for the
device if wakeup is enabled. Use a 100 ms processing interval to give
the I3C device driver time to process the IBI.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260807145638.168865-10-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i3c/master.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 2616354dbe54..6c5341491944 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -3384,6 +3384,9 @@ static void i3c_master_unregister_i3c_devs(struct i3c_master_controller *master) } } +/* Approximate time for IBI handler to run */ +#define I3C_WAKEUP_PROCESSING_TIME_MS 100 + /** * i3c_master_queue_ibi() - Queue an IBI * @dev: the device this IBI is coming from @@ -3397,6 +3400,9 @@ void i3c_master_queue_ibi(struct i3c_dev_desc *dev, struct i3c_ibi_slot *slot) if (!dev->ibi || !slot) return; + if (device_may_wakeup(&dev->dev->dev)) + pm_wakeup_event(&dev->dev->dev, I3C_WAKEUP_PROCESSING_TIME_MS); + atomic_inc(&dev->ibi->pending_ibis); queue_work(dev->ibi->wq, &slot->work); } |