This adds wakeup capability to the I2C bus, and prevents regulator
shutdown when activated.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
---
drivers/input/rmi4/rmi_i2c.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/input/rmi4/rmi_i2c.c b/drivers/input/rmi4/rmi_i2c.c
index 50305fc..dc70ea0 100644
--- a/drivers/input/rmi4/rmi_i2c.c
+++ b/drivers/input/rmi4/rmi_i2c.c
@@ -273,6 +273,8 @@ static int rmi_i2c_probe(struct i2c_client *client,
dev_info(&client->dev, "registering I2C-connected sensor\n");
+ device_init_wakeup(&client->dev, true);
+
error = rmi_register_transport_device(&rmi_i2c->xport);
if (error) {
dev_err(&client->dev, "failed to register sensor: %d\n", error);
@@ -299,8 +301,10 @@ static int rmi_i2c_suspend(struct device *dev)
if (ret)
dev_warn(dev, "Failed to resume device: %d\n", ret);
- regulator_bulk_disable(ARRAY_SIZE(rmi_i2c->supplies),
- rmi_i2c->supplies);
+ if (!device_may_wakeup(dev)) {
+ regulator_bulk_disable(ARRAY_SIZE(rmi_i2c->supplies),
+ rmi_i2c->supplies);
+ }
return ret;
}
@@ -311,12 +315,14 @@ static int rmi_i2c_resume(struct device *dev)
struct rmi_i2c_xport *rmi_i2c = i2c_get_clientdata(client);
int ret;
- ret = regulator_bulk_enable(ARRAY_SIZE(rmi_i2c->supplies),
- rmi_i2c->supplies);
- if (ret)
- return ret;
+ if (!device_may_wakeup(dev)) {
+ ret = regulator_bulk_enable(ARRAY_SIZE(rmi_i2c->supplies),
+ rmi_i2c->supplies);
+ if (ret)
+ return ret;
- msleep(rmi_i2c->startup_delay);
+ msleep(rmi_i2c->startup_delay);
+ }
ret = rmi_driver_resume(rmi_i2c->xport.rmi_dev, true);
if (ret)
--
2.7.4
