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From: Sean Nyekjaer <sean@geanix.com>
To: linux-iio@vger.kernel.org, jic23@kernel.org,
	lorenzo.bianconi83@gmail.com
Cc: Sean Nyekjaer <sean@geanix.com>,
	denis.ciocca@st.com, mario.tesi@st.com, armando.visconti@st.com,
	martin@geanix.com
Subject: [PATCH v7 3/5] iio: imu: st_lsm6dsx: add wakeup-source option
Date: Thu, 12 Sep 2019 09:06:12 +0200	[thread overview]
Message-ID: <20190912070614.1144169-4-sean@geanix.com> (raw)
In-Reply-To: <20190912070614.1144169-1-sean@geanix.com>

This add ways for the SoC to wake from accelerometer wake events.

In the suspend function we skip disabling the sensor if wakeup-source
and events are activated.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
---
Changes since v4:
 * More devices supports wakeup

Changes since v5:
 * None

Changes since v6:
 * None

 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 4198ba263d03..f79978a2870f 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -1858,6 +1858,9 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 			return err;
 	}
 
+	if (dev->of_node && of_property_read_bool(dev->of_node, "wakeup-source"))
+		device_init_wakeup(dev, true);
+
 	return 0;
 }
 EXPORT_SYMBOL(st_lsm6dsx_probe);
@@ -1876,6 +1879,12 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev)
 		if (!(hw->enable_mask & BIT(sensor->id)))
 			continue;
 
+		if (device_may_wakeup(dev) && i == ST_LSM6DSX_ID_ACC) {
+			/* Enable wake from IRQ */
+			enable_irq_wake(hw->irq);
+			continue;
+		}
+
 		if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
 		    sensor->id == ST_LSM6DSX_ID_EXT1 ||
 		    sensor->id == ST_LSM6DSX_ID_EXT2)
@@ -1908,6 +1917,11 @@ static int __maybe_unused st_lsm6dsx_resume(struct device *dev)
 		if (!(hw->suspend_mask & BIT(sensor->id)))
 			continue;
 
+		if (device_may_wakeup(dev) && i == ST_LSM6DSX_ID_ACC) {
+			disable_irq_wake(hw->irq);
+			continue;
+		}
+
 		if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
 		    sensor->id == ST_LSM6DSX_ID_EXT1 ||
 		    sensor->id == ST_LSM6DSX_ID_EXT2)
-- 
2.23.0


  parent reply	other threads:[~2019-09-12  7:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-12  7:06 [PATCH v7 0/5] enable motion events for st_lsm6dsx Sean Nyekjaer
2019-09-12  7:06 ` [PATCH v7 1/5] iio: imu: st_lsm6dsx: move interrupt thread to core Sean Nyekjaer
2019-09-12  7:06 ` [PATCH v7 2/5] iio: imu: st_lsm6dsx: add motion events Sean Nyekjaer
2019-09-12  7:06 ` Sean Nyekjaer [this message]
2019-09-13  6:08   ` [PATCH v7 3/5] iio: imu: st_lsm6dsx: add wakeup-source option Sean Nyekjaer
2019-09-13  8:27     ` Lorenzo Bianconi
2019-09-13  8:43       ` Sean Nyekjaer
2019-09-13  8:58         ` Lorenzo Bianconi
2019-09-13  9:00           ` Sean Nyekjaer
2019-09-12  7:06 ` [PATCH v7 4/5] iio: imu: st_lsm6dsx: always enter interrupt thread Sean Nyekjaer
2019-09-12  7:06 ` [PATCH v7 5/5] iio: imu: st_lsm6dsx: add motion report function and call from interrupt Sean Nyekjaer

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