diff mbox series

[v2,2/2] Input: exc3000 - Support power supply regulators

Message ID 20230707131042.10795-2-mike.looijmans@topic.nl
State New
Headers show
Series [v2,1/2] dt-bindings: Input: exc3000 - Support power supply regulators | expand

Commit Message

Mike Looijmans July 7, 2023, 1:10 p.m. UTC 
Add power supply regulator support to the exc3000 devices.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>

---

Changes in v2:
Add missing "return" statement
Use devm_regulator_get_enable without _optional

 drivers/input/touchscreen/exc3000.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c
index 4af4c1e5d0da..e3f6d21b3c1b 100644
--- a/drivers/input/touchscreen/exc3000.c
+++ b/drivers/input/touchscreen/exc3000.c
@@ -18,6 +18,7 @@ 
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/regulator/consumer.h>
 #include <linux/sizes.h>
 #include <linux/timer.h>
 #include <asm/unaligned.h>
@@ -360,6 +361,12 @@  static int exc3000_probe(struct i2c_client *client)
 	if (IS_ERR(data->reset))
 		return PTR_ERR(data->reset);
 
+	/* For proper reset sequence, enable power while reset asserted */
+	error = devm_regulator_get_enable(&client->dev, "vdd");
+	if (error && error != -ENODEV)
+		return dev_err_probe(&client->dev, error,
+				     "failed to request vdd regulator\n");
+
 	if (data->reset) {
 		msleep(EXC3000_RESET_MS);
 		gpiod_set_value_cansleep(data->reset, 0);