From: "Mylène Josserand" <mylene.josserand@free-electrons.com>
To: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.uk,
maxime.ripard@free-electrons.com, wens@csie.org,
dmitry.torokhov@gmail.com, linux-input@vger.kernel.org
Cc: simon.budig@kernelconcepts.de, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
mylene.josserand@free-electrons.com,
thomas.petazzoni@free-electrons.com
Subject: [PATCH 4/5] Input: edt-ft5x06 - Add support for regulator
Date: Fri, 8 Dec 2017 22:54:18 +0100 [thread overview]
Message-ID: <20171208215419.30396-5-mylene.josserand@free-electrons.com> (raw)
In-Reply-To: <20171208215419.30396-1-mylene.josserand@free-electrons.com>
Add the support of regulator to use them as VCC source.
Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com>
---
drivers/input/touchscreen/edt-ft5x06.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index c53a3d7239e7..44b0e04a8f35 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -39,6 +39,7 @@
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
#define WORK_REGISTER_THRESHOLD 0x00
#define WORK_REGISTER_REPORT_RATE 0x08
@@ -91,6 +92,7 @@ struct edt_ft5x06_ts_data {
struct touchscreen_properties prop;
u16 num_x;
u16 num_y;
+ struct regulator *supply;
struct gpio_desc *reset_gpio;
struct gpio_desc *wake_gpio;
@@ -993,6 +995,23 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
tsdata->max_support_points = chip_data->max_support_points;
+ tsdata->supply = devm_regulator_get_optional(&client->dev, "power");
+ if (IS_ERR(tsdata->supply)) {
+ error = PTR_ERR(tsdata->supply);
+ dev_err(&client->dev, "failed to request regulator: %d\n",
+ error);
+ return error;
+ };
+
+ if (tsdata->supply) {
+ error = regulator_enable(tsdata->supply);
+ if (error < 0) {
+ dev_err(&client->dev, "failed to enable supply: %d\n",
+ error);
+ return error;
+ }
+ }
+
tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
"reset", GPIOD_OUT_HIGH);
if (IS_ERR(tsdata->reset_gpio)) {
@@ -1122,20 +1141,34 @@ static int edt_ft5x06_ts_remove(struct i2c_client *client)
static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
if (device_may_wakeup(dev))
enable_irq_wake(client->irq);
+ if (tsdata->supply)
+ regulator_disable(tsdata->supply);
+
return 0;
}
static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
+ struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+ int ret;
if (device_may_wakeup(dev))
disable_irq_wake(client->irq);
+ if (tsdata->supply) {
+ ret = regulator_enable(tsdata->supply);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable supply: %d\n", ret);
+ return ret;
+ }
+ }
+
return 0;
}
--
2.11.0
next prev parent reply other threads:[~2017-12-08 21:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-08 21:54 [PATCH 0/5] sun8i-a83t: Add touchscreen support on TBS A711 Mylène Josserand
2017-12-08 21:54 ` [PATCH 1/5] arm: dts: sun8i: a83t: Add I2C0 node Mylène Josserand
2017-12-11 7:15 ` Maxime Ripard
2017-12-11 8:31 ` Chen-Yu Tsai
2017-12-08 21:54 ` [PATCH 2/5] arm: dts: sun8i: a83t: Add I2C0 pins group Mylène Josserand
2017-12-08 21:54 ` [PATCH 3/5] arm: dts: sun8i: a83t: a711: Enable I2C0 Mylène Josserand
2017-12-11 7:18 ` Maxime Ripard
2017-12-08 21:54 ` Mylène Josserand [this message]
2017-12-09 1:16 ` [PATCH 4/5] Input: edt-ft5x06 - Add support for regulator Dmitry Torokhov
2017-12-09 1:24 ` Dmitry Torokhov
2017-12-08 21:54 ` [PATCH 5/5] arm: dts: sun8i: a83t: a711: Add touchscreen node Mylène Josserand
2017-12-11 7:16 ` Maxime Ripard
2017-12-08 22:01 ` [PATCH 0/5] sun8i-a83t: Add touchscreen support on TBS A711 Mylene JOSSERAND
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