* [PATCH v3 2/3] iio: proximity: add driver for Sharp GP2AP070S proximity sensor
2026-07-30 20:06 [PATCH v3 0/3] Add Sharp GP2AP070S Proximity Driver and enable it in Galaxy J6 (j6lte) Kaustabh Chakraborty
2026-07-30 20:07 ` [PATCH v3 1/3] dt-bindings: iio: proximity: add Sharp GP2AP070S proximity sensor Kaustabh Chakraborty
@ 2026-07-30 20:07 ` Kaustabh Chakraborty
2026-07-30 20:18 ` sashiko-bot
2026-07-30 20:07 ` [PATCH v3 3/3] arm64: dts: exynos7870-j6lte: add " Kaustabh Chakraborty
2 siblings, 1 reply; 7+ messages in thread
From: Kaustabh Chakraborty @ 2026-07-30 20:07 UTC (permalink / raw)
To: Jonathan Cameron, David Lechner, Nuno Sá, Andy Shevchenko,
Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Kaustabh Chakraborty, Peter Griffin, Alim Akhtar
Cc: linux-iio, devicetree, linux-kernel, linux-arm-kernel,
linux-samsung-soc
The GP2AP070S is a proximity sensor designed and manufactured by Sharp
Corporation. This sensor is used in mobile devices, including, but not
limited to - the Samsung Galaxy J6.
The driver has been adopted from Samsung's downstream kernel
implementation [1]. Due to the lack of public documentation about the
schematics of this device. The downstream driver acts as the secondary
source of information. Driver clarity has also been improved with the
help of the GP2AP* drivers in iio/light.
Link: https://github.com/Exynos7870/android_kernel_samsung_universal7870/blob/lineage-16.0/drivers/sensors/gp2ap070s.c [1]
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
drivers/iio/proximity/Kconfig | 11 +
drivers/iio/proximity/Makefile | 1 +
drivers/iio/proximity/gp2ap070s.c | 505 ++++++++++++++++++++++++++++++++++++++
3 files changed, 517 insertions(+)
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index bb77fad2a1b3..39db19e59650 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -41,6 +41,17 @@ config D3323AA
To compile this driver as a module, choose M here: the module will be
called d3323aa.
+config GP2AP070S
+ tristate "Sharp GP2AP070S proximity sensor"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ Say Y here to build a driver for the Sharp GP2AP070S proximity
+ sensor.
+
+ To compile this driver as a module, choose M here: the module will be
+ called gp2ap070s.
+
config HX9023S
tristate "TYHX HX9023S SAR sensor"
select IIO_BUFFER
diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile
index 4352833dd8a4..627ffb04acb2 100644
--- a/drivers/iio/proximity/Makefile
+++ b/drivers/iio/proximity/Makefile
@@ -7,6 +7,7 @@
obj-$(CONFIG_AS3935) += as3935.o
obj-$(CONFIG_CROS_EC_MKBP_PROXIMITY) += cros_ec_mkbp_proximity.o
obj-$(CONFIG_D3323AA) += d3323aa.o
+obj-$(CONFIG_GP2AP070S) += gp2ap070s.o
obj-$(CONFIG_HX9023S) += hx9023s.o
obj-$(CONFIG_IRSD200) += irsd200.o
obj-$(CONFIG_ISL29501) += isl29501.o
diff --git a/drivers/iio/proximity/gp2ap070s.c b/drivers/iio/proximity/gp2ap070s.c
new file mode 100644
index 000000000000..98fc12e5ccd5
--- /dev/null
+++ b/drivers/iio/proximity/gp2ap070s.c
@@ -0,0 +1,505 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * IIO driver for Sharp GP2AP070S proximity sensor.
+ *
+ * Based on Samsung G610FXXU1CRI4 kernel driver - drivers/sensors/gp2ap070s.c
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2026 Kaustabh Chakraborty <kauschluss@disroot.org>
+ */
+
+#include <linux/array_size.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/types.h>
+
+#define GP2AP070S_REG_COM1 0x80
+#define GP2AP070S_COM1_WKUP BIT(7)
+#define GP2AP070S_COM1_EN BIT(5)
+
+#define GP2AP070S_REG_COM2 0x81
+
+#define GP2AP070S_REG_COM3 0x82
+#define GP2AP070S_COM3_INT_PULSE BIT(1)
+
+#define GP2AP070S_REG_COM4 0x83
+#define GP2AP070S_COM4_BLINK GENMASK(2, 0) /* LED Blink Interval */
+#define GP2AP070S_COM4_BLINK_0ms 0
+#define GP2AP070S_COM4_BLINK_2ms 1
+#define GP2AP070S_COM4_BLINK_8ms 2
+#define GP2AP070S_COM4_BLINK_33ms 3
+#define GP2AP070S_COM4_BLINK_66ms 4
+#define GP2AP070S_COM4_BLINK_131ms 5
+#define GP2AP070S_COM4_BLINK_262ms 6
+#define GP2AP070S_COM4_BLINK_524ms 7
+
+#define GP2AP070S_REG_PS1 0x85
+#define GP2AP070S_PS1_RESOL GENMASK(5, 4) /* Resolution */
+#define GP2AP070S_PS1_RESOL_14ms 0
+#define GP2AP070S_PS1_RESOL_12ms 1
+#define GP2AP070S_PS1_RESOL_10ms 2
+#define GP2AP070S_PS1_RESOL_8ms 3
+
+#define GP2AP070S_REG_PS2 0x86
+#define GP2AP070S_PS2_IOUT GENMASK(6, 4) /* Current Output */
+#define GP2AP070S_PS2_IOUT_0mA 0
+#define GP2AP070S_PS2_IOUT_24mA 1
+#define GP2AP070S_PS2_IOUT_89mA 2
+#define GP2AP070S_PS2_IOUT_130mA 3
+#define GP2AP070S_PS2_IOUT_190mA 4
+#define GP2AP070S_PS2_SUM32 BIT(2)
+
+#define GP2AP070S_REG_PS3 0x87
+#define GP2AP070S_PS3_PRST GENMASK(6, 4) /* Repeating Measurements */
+
+#define GP2AP070S_REG_PS_THD_LO_LE16 0x88
+#define GP2AP070S_REG_PS_THD_HI_LE16 0x8a
+#define GP2AP070S_REG_D0_LE16 0x90
+
+struct gp2ap070s_drvdata {
+ struct regmap *regmap;
+ struct mutex mutex;
+ u32 near_level;
+};
+
+static bool gp2ap070s_regmap_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == GP2AP070S_REG_D0_LE16;
+}
+
+static const struct regmap_config gp2ap070s_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_reg = gp2ap070s_regmap_volatile,
+};
+
+static const char *const gp2ap070s_regulator_names[] = {
+ "vdd",
+ "vled",
+};
+
+static ssize_t gp2ap070s_iio_read_near_level(struct iio_dev *indio_dev,
+ uintptr_t priv,
+ const struct iio_chan_spec *chan,
+ char *buf)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+
+ return sysfs_emit(buf, "%u\n", drvdata->near_level);
+}
+
+static const struct iio_chan_spec_ext_info gp2ap070s_iio_chan_spec_ext_info[] = {
+ {
+ .name = "nearlevel",
+ .shared = IIO_SEPARATE,
+ .read = gp2ap070s_iio_read_near_level,
+ },
+ { }
+};
+
+static const struct iio_event_spec gp2ap070s_iio_event_spec[] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ },
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_separate = BIT(IIO_EV_INFO_VALUE),
+ },
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE),
+ },
+};
+
+static const struct iio_chan_spec gp2ap070s_iio_chan_spec[] = {
+ {
+ .type = IIO_PROXIMITY,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .ext_info = gp2ap070s_iio_chan_spec_ext_info,
+ .event_spec = gp2ap070s_iio_event_spec,
+ .num_event_specs = ARRAY_SIZE(gp2ap070s_iio_event_spec),
+ },
+};
+
+static int gp2ap070s_iio_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val,
+ int *val2, long mask)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+ __le16 value;
+ int ret;
+
+ ret = regmap_bulk_read(drvdata->regmap, GP2AP070S_REG_D0_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ *val = le16_to_cpu(value);
+ return IIO_VAL_INT;
+}
+
+static int gp2ap070s_iio_read_event_value(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int *val,
+ int *val2)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+ __le16 value;
+ int ret;
+
+ if (type != IIO_EV_TYPE_THRESH || info != IIO_EV_INFO_VALUE)
+ return -EINVAL;
+
+ guard(mutex)(&drvdata->mutex);
+
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = regmap_bulk_read(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_HI_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ *val = le16_to_cpu(value);
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = regmap_bulk_read(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_LO_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ *val = le16_to_cpu(value);
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int gp2ap070s_iio_write_event_value(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int val,
+ int val2)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+ __le16 value;
+ u16 threshold_other;
+ int ret;
+
+ if (type != IIO_EV_TYPE_THRESH || info != IIO_EV_INFO_VALUE)
+ return -EINVAL;
+
+ /* Ensure val is a 16-bit value */
+ if (val < 0 || val >= (1 << 16))
+ return -EINVAL;
+
+ guard(mutex)(&drvdata->mutex);
+
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ ret = regmap_bulk_read(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_LO_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ /* Ensure lo_threshold < hi_threshold */
+ threshold_other = le16_to_cpu(value);
+ if (threshold_other >= val)
+ return -EINVAL;
+
+ value = cpu_to_le16((u16)val);
+ ret = regmap_bulk_write(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_HI_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ return IIO_VAL_INT;
+ case IIO_EV_DIR_FALLING:
+ ret = regmap_bulk_read(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_HI_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ /* Ensure hi_threshold > lo_threshold */
+ threshold_other = le16_to_cpu(value);
+ if (threshold_other <= val)
+ return -EINVAL;
+
+ value = cpu_to_le16((u16)val);
+ ret = regmap_bulk_write(drvdata->regmap,
+ GP2AP070S_REG_PS_THD_LO_LE16, &value,
+ sizeof(value));
+ if (ret)
+ return ret;
+
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int gp2ap070s_read_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+ unsigned int value;
+ int ret;
+
+ if (type != IIO_EV_TYPE_THRESH)
+ return -EINVAL;
+
+ guard(mutex)(&drvdata->mutex);
+
+ switch (dir) {
+ case IIO_EV_DIR_EITHER:
+ ret = regmap_read(drvdata->regmap, GP2AP070S_REG_COM3, &value);
+ if (ret)
+ return ret;
+
+ return FIELD_GET(GP2AP070S_COM3_INT_PULSE, value);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int gp2ap070s_write_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ bool state)
+{
+ struct gp2ap070s_drvdata *drvdata = iio_priv(indio_dev);
+
+ if (type != IIO_EV_TYPE_THRESH)
+ return -EINVAL;
+
+ guard(mutex)(&drvdata->mutex);
+
+ switch (dir) {
+ case IIO_EV_DIR_EITHER:
+ if (state)
+ return regmap_set_bits(drvdata->regmap,
+ GP2AP070S_REG_COM3,
+ GP2AP070S_COM3_INT_PULSE);
+ else
+ return regmap_clear_bits(drvdata->regmap,
+ GP2AP070S_REG_COM3,
+ GP2AP070S_COM3_INT_PULSE);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_info gp2ap070s_iio_info = {
+ .read_raw = gp2ap070s_iio_read_raw,
+ .read_event_value = gp2ap070s_iio_read_event_value,
+ .write_event_value = gp2ap070s_iio_write_event_value,
+ .read_event_config = gp2ap070s_read_event_config,
+ .write_event_config = gp2ap070s_write_event_config,
+};
+
+static irqreturn_t gp2ap070s_irq_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ s64 timestamp = iio_get_time_ns(indio_dev);
+
+ iio_push_event(indio_dev,
+ IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0, IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+
+ return IRQ_HANDLED;
+}
+
+static int gp2ap070s_reset(struct gp2ap070s_drvdata *drvdata)
+{
+ int ret;
+
+ ret = regmap_write(drvdata->regmap, GP2AP070S_REG_COM1, 0);
+ if (ret)
+ return ret;
+
+ regcache_mark_dirty(drvdata->regmap);
+
+ return 0;
+}
+
+static void gp2ap070s_reset_action(void *private)
+{
+ struct gp2ap070s_drvdata *drvdata = private;
+
+ gp2ap070s_reset(drvdata);
+}
+
+static int gp2ap070s_probe_hw_register(struct gp2ap070s_drvdata *drvdata)
+{
+ struct device *dev = regmap_get_device(drvdata->regmap);
+ int ret;
+
+ ret = gp2ap070s_reset(drvdata);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to reset sensor\n");
+
+ ret = regmap_write(drvdata->regmap, GP2AP070S_REG_COM2, 0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to enable interrupts\n");
+
+ ret = regmap_set_bits(drvdata->regmap, GP2AP070S_REG_COM3,
+ GP2AP070S_COM3_INT_PULSE);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to unmask interrupts\n");
+
+ ret = regmap_write_bits(drvdata->regmap, GP2AP070S_REG_COM4,
+ GP2AP070S_COM4_BLINK,
+ FIELD_PREP_CONST(GP2AP070S_COM4_BLINK,
+ GP2AP070S_COM4_BLINK_33ms));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set LED blink timing\n");
+
+ ret = regmap_write_bits(drvdata->regmap, GP2AP070S_REG_PS1,
+ GP2AP070S_PS1_RESOL,
+ FIELD_PREP_CONST(GP2AP070S_PS1_RESOL,
+ GP2AP070S_PS1_RESOL_10ms));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set resolution\n");
+
+ ret = regmap_write_bits(drvdata->regmap, GP2AP070S_REG_PS2,
+ GP2AP070S_PS2_IOUT | GP2AP070S_PS2_SUM32,
+ FIELD_PREP_CONST(GP2AP070S_PS2_IOUT,
+ GP2AP070S_PS2_IOUT_89mA) |
+ GP2AP070S_PS2_SUM32);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set current output\n");
+
+ ret = regmap_write_bits(drvdata->regmap, GP2AP070S_REG_PS3,
+ GP2AP070S_PS3_PRST,
+ FIELD_PREP_CONST(GP2AP070S_PS3_PRST, 3));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set measurement repetitions\n");
+
+ ret = regmap_set_bits(drvdata->regmap, GP2AP070S_REG_COM1,
+ GP2AP070S_COM1_WKUP | GP2AP070S_COM1_EN);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to enable sensor\n");
+
+ return 0;
+}
+
+static int gp2ap070s_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct iio_dev *indio_dev;
+ struct gp2ap070s_drvdata *drvdata;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*drvdata));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ drvdata = iio_priv(indio_dev);
+ drvdata->regmap = devm_regmap_init_i2c(client, &gp2ap070s_regmap_config);
+ if (IS_ERR(drvdata->regmap))
+ return dev_err_probe(dev, PTR_ERR(drvdata->regmap), "Failed to create regmap\n");
+
+ ret = devm_mutex_init(dev, &drvdata->mutex);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to initialize mutex\n");
+
+ ret = devm_regulator_bulk_get_enable(dev,
+ ARRAY_SIZE(gp2ap070s_regulator_names),
+ gp2ap070s_regulator_names);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get and enable regulators\n");
+
+ fsleep(10000);
+
+ indio_dev->name = "gp2ap070s";
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = gp2ap070s_iio_chan_spec;
+ indio_dev->num_channels = ARRAY_SIZE(gp2ap070s_iio_chan_spec);
+ indio_dev->info = &gp2ap070s_iio_info;
+
+ if (device_property_present(dev, "proximity-near-level")) {
+ ret = device_property_read_u32(dev, "proximity-near-level",
+ &drvdata->near_level);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to get value for proximity-near-level\n");
+ }
+
+ ret = gp2ap070s_probe_hw_register(drvdata);
+ if (ret)
+ goto hw_reset;
+
+ ret = devm_add_action_or_reset(dev, gp2ap070s_reset_action, drvdata);
+ if (ret) {
+ ret = dev_err_probe(dev, ret, "Failed to schedule reset on driver removal\n");
+ goto hw_reset;
+ }
+
+ ret = devm_request_threaded_irq(dev, client->irq, NULL,
+ gp2ap070s_irq_handler, IRQF_ONESHOT,
+ "gp2ap070s-irq", indio_dev);
+ if (ret)
+ goto hw_reset;
+
+ ret = devm_iio_device_register(dev, indio_dev);
+ if (ret)
+ goto hw_reset;
+
+ return 0;
+
+hw_reset:
+ gp2ap070s_reset(drvdata);
+
+ return ret;
+}
+
+static const struct of_device_id gp2ap070s_of_device_id[] = {
+ { .compatible = "sharp,gp2ap070s" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, gp2ap070s_of_device_id);
+
+static const struct i2c_device_id gp2ap070s_i2c_device_id[] = {
+ { .name = "gp2ap070s" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, gp2ap070s_i2c_device_id);
+
+static struct i2c_driver gp2ap070s_i2c_driver = {
+ .driver = {
+ .name = "gp2ap070s",
+ .of_match_table = gp2ap070s_of_device_id,
+ },
+ .probe = gp2ap070s_probe,
+ .id_table = gp2ap070s_i2c_device_id,
+};
+module_i2c_driver(gp2ap070s_i2c_driver);
+
+MODULE_AUTHOR("Kaustabh Chakraborty <kauschluss@disroot.org>");
+MODULE_DESCRIPTION("Sharp GP2AP070S Proximity Sensor");
+MODULE_LICENSE("GPL");
--
2.54.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v3 3/3] arm64: dts: exynos7870-j6lte: add Sharp GP2AP070S proximity sensor
2026-07-30 20:06 [PATCH v3 0/3] Add Sharp GP2AP070S Proximity Driver and enable it in Galaxy J6 (j6lte) Kaustabh Chakraborty
2026-07-30 20:07 ` [PATCH v3 1/3] dt-bindings: iio: proximity: add Sharp GP2AP070S proximity sensor Kaustabh Chakraborty
2026-07-30 20:07 ` [PATCH v3 2/3] iio: proximity: add driver for " Kaustabh Chakraborty
@ 2026-07-30 20:07 ` Kaustabh Chakraborty
2026-07-30 20:19 ` sashiko-bot
2 siblings, 1 reply; 7+ messages in thread
From: Kaustabh Chakraborty @ 2026-07-30 20:07 UTC (permalink / raw)
To: Jonathan Cameron, David Lechner, Nuno Sá, Andy Shevchenko,
Rob Herring, Krzysztof Kozlowski, Conor Dooley,
Kaustabh Chakraborty, Peter Griffin, Alim Akhtar
Cc: linux-iio, devicetree, linux-kernel, linux-arm-kernel,
linux-samsung-soc
The Sharp GP2AP070S is a proximity sensor, which is connected to a
GPIO-driven I2C line. Define the devicetree node for the sensor.
The sensor requires two voltage supplies, one of which is from the
primary regulator bank of the device, while the other one is controlled
by the GPIO. Add a regulator wrapping over the concerned GPIO so as to
feed it to the sensor node.
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts | 55 ++++++++++++++++++++++++-
1 file changed, 53 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
index de30d0970336..dd493138fed6 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
@@ -73,6 +73,35 @@ key-volup {
};
};
+ i2c-proximity {
+ compatible = "i2c-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c_proxm_bus>;
+
+ sda-gpios = <&gpf4 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ scl-gpios = <&gpf4 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+ i2c-gpio,delay-us = <2>;
+
+ proximity@39 {
+ compatible = "sharp,gp2ap070s";
+ reg = <0x39>;
+ interrupt-parent = <&gpa0>;
+ interrupts = <5 IRQ_TYPE_EDGE_BOTH>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&proxm_irq>;
+
+ vdd-supply = <&vdd_fixed_proxm>;
+ vled-supply = <&vdd_ldo33>;
+
+ proximity-near-level = <500>;
+ };
+ };
+
memory@40000000 {
device_type = "memory";
reg = <0x0 0x40000000 0x3d800000>,
@@ -94,6 +123,16 @@ vdd_fixed_mmc2: regulator-fixed-mmc2 {
enable-active-high;
};
+ /* proximity: vdd */
+ vdd_fixed_proxm: regulator-fixed-proxm {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_fixed_proxm";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ gpio = <&gpd2 3 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
reserved-memory {
#address-cells = <2>;
#size-cells = <1>;
@@ -354,13 +393,12 @@ vdd_ldo32: ldo32 {
regulator-ramp-delay = <12000>;
};
+ /* proximity: vled */
vdd_ldo33: ldo33 {
regulator-name = "vdd_ldo33";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-ramp-delay = <12000>;
- regulator-boot-on;
- regulator-always-on;
};
/* touchscreen: vdd */
@@ -556,6 +594,13 @@ pmic_irq: pmic-irq-pins {
samsung,pin-drv = <EXYNOS5433_PIN_DRV_FAST_SR4>;
};
+ proxm_irq: proxm-irq-pins {
+ samsung,pins = "gpa0-5";
+ samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
+ samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+ samsung,pin-drv = <EXYNOS5433_PIN_DRV_FAST_SR1>;
+ };
+
touch_irq: touch-irq-pins {
samsung,pins = "gpa0-6";
samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
@@ -579,6 +624,12 @@ bt_enable: bt-enable-pins {
samsung,pin-pud = <EXYNOS_PIN_PULL_DOWN>;
};
+ i2c_proxm_bus: i2c-proxm-bus-pins {
+ samsung,pins = "gpf4-3", "gpf4-2";
+ samsung,pin-function = <EXYNOS_PIN_FUNC_3>;
+ samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+ };
+
wlan_enable: wlan-enable-pins {
samsung,pins = "gpd3-6";
samsung,pin-function = <EXYNOS_PIN_FUNC_OUTPUT>;
--
2.54.0
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