From: Ondrej Jirman <megous@megous.com>
To: linux-sunxi@googlegroups.com,
"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>,
"Marco Felsch" <m.felsch@pengutronix.de>,
"Ondrej Jirman" <megous@megous.com>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Mylène Josserand" <mylene.josserand@bootlin.com>
Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] input: edt-ft5x06: Add support for regulator
Date: Tue, 29 Oct 2019 01:58:04 +0100 [thread overview]
Message-ID: <20191029005806.3577376-2-megous@megous.com> (raw)
In-Reply-To: <20191029005806.3577376-1-megous@megous.com>
From: Mylène Josserand <mylene.josserand@bootlin.com>
Add the support for enabling optional regulator that may be used as VCC
source.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
---
drivers/input/touchscreen/edt-ft5x06.c | 30 ++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 5525f1fb1526..d61731c0037d 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -28,6 +28,7 @@
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
#include <asm/unaligned.h>
+#include <linux/regulator/consumer.h>
#define WORK_REGISTER_THRESHOLD 0x00
#define WORK_REGISTER_REPORT_RATE 0x08
@@ -88,6 +89,7 @@ struct edt_ft5x06_ts_data {
struct touchscreen_properties prop;
u16 num_x;
u16 num_y;
+ struct regulator *vcc;
struct gpio_desc *reset_gpio;
struct gpio_desc *wake_gpio;
@@ -1036,6 +1038,13 @@ edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
}
}
+static void edt_ft5x06_disable_regulator(void *arg)
+{
+ struct edt_ft5x06_ts_data *data = arg;
+
+ regulator_disable(data->vcc);
+}
+
static int edt_ft5x06_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -1064,6 +1073,27 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client,
tsdata->max_support_points = chip_data->max_support_points;
+ tsdata->vcc = devm_regulator_get(&client->dev, "vcc");
+ if (IS_ERR(tsdata->vcc)) {
+ error = PTR_ERR(tsdata->vcc);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "failed to request regulator: %d\n", error);
+ return error;
+ }
+
+ error = regulator_enable(tsdata->vcc);
+ if (error < 0) {
+ dev_err(&client->dev, "failed to enable vcc: %d\n", error);
+ return error;
+ }
+
+ error = devm_add_action_or_reset(&client->dev,
+ edt_ft5x06_disable_regulator,
+ tsdata);
+ if (error)
+ return error;
+
tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev,
"reset", GPIOD_OUT_HIGH);
if (IS_ERR(tsdata->reset_gpio)) {
--
2.23.0
next prev parent reply other threads:[~2019-10-29 0:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-29 0:58 [PATCH 0/3] Add touchscreen support for TBS A711 Tablet Ondrej Jirman
2019-10-29 0:58 ` Ondrej Jirman [this message]
2019-10-29 4:12 ` [PATCH 1/3] input: edt-ft5x06: Add support for regulator Dmitry Torokhov
2019-10-29 8:55 ` Marco Felsch
2019-10-29 11:21 ` Ondřej Jirman
2019-10-29 11:29 ` Marco Felsch
2019-10-29 0:58 ` [PATCH 2/3] dt-bindings: input: edt-ft5x06: Add regulator support Ondrej Jirman
2019-10-29 0:58 ` [PATCH 3/3] arm: dts: sun8i: a83t: a711: Add touchscreen node Ondrej Jirman
2019-10-29 8:30 ` Maxime Ripard
2019-10-29 9:08 ` Marco Felsch
2019-10-29 11:13 ` Ondřej Jirman
2019-10-29 4:15 ` [PATCH 0/3] Add touchscreen support for TBS A711 Tablet Dmitry Torokhov
2019-10-29 9:04 ` Marco Felsch
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