[PATCH V4 09/14] i3c: master: Report wakeup events for IBIs
Adrian Hunter <[email protected]>
| Newsgroups | org.kernel.vger.linux-pm,org.infradead.lists.linux-i3c,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci |
|---|---|
| Organization | Intel Finland Oy, Registered Address: c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo, Business Identity Code: 0357606 - 4, Domiciled in Helsinki |
| Message-ID | <[email protected]> |
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 <[email protected]> --- Changes in V4: None Changes in V2 and V3: None drivers/i3c/master.c | 6 ++++++ 1 file changed, 6 insertions(+) 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); } -- 2.53.0