* [PATCH] Input: synaptics-rmi4 - Add I2C wakeup support
@ 2021-11-16 18:01 Loic Poulain
2022-01-14 10:03 ` Loic Poulain
0 siblings, 1 reply; 2+ messages in thread
From: Loic Poulain @ 2021-11-16 18:01 UTC (permalink / raw)
To: dmitry.torokhov; +Cc: linux-input, Loic Poulain
This adds wakeup capability to the I2C bus, and prevents regulator
shutdown when activated.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
---
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Input: synaptics-rmi4 - Add I2C wakeup support
2021-11-16 18:01 [PATCH] Input: synaptics-rmi4 - Add I2C wakeup support Loic Poulain
@ 2022-01-14 10:03 ` Loic Poulain
0 siblings, 0 replies; 2+ messages in thread
From: Loic Poulain @ 2022-01-14 10:03 UTC (permalink / raw)
To: dmitry.torokhov; +Cc: linux-input
Hi Dmitry,
On Tue, 16 Nov 2021 at 18:50, Loic Poulain <loic.poulain@linaro.org> wrote:
>
> This adds wakeup capability to the I2C bus, and prevents regulator
> shutdown when activated.
>
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
> ---
I Submitted a few changes for rmi4, still in new state. Should I
resend, is there anyone else I can include for review?
Thanks,
Loic
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-01-14 10:03 ` Loic Poulain
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