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Subject[PATCH 2/2] Input: exc3000 - Support power supply regulators
Date
Add power supply regulator support to the exc3000 devices.

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

---

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

diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c
index 4af4c1e5d0da..3e50af8a4a2d 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_optional(&client->dev, "vdd");
+ if (error && error != -ENODEV)
+ 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);
--
2.17.1

Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


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