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Message-Id: <20241107-p3t1085-v1-2-9a76cb85673f@nxp.com>
Date: Thu, 07 Nov 2024 18:02:28 -0500
From: Frank Li <Frank.Li@....com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-iio@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, Frank Li <Frank.Li@....com>,
Carlos Song <carlos.song@....com>, Clark Wang <xiaoning.wang@....com>
Subject: [PATCH 2/3] iio: temperature: Add support for P3T1085
From: Carlos Song <carlos.song@....com>
Add basic function support for P3T1085 temperature sensor.
P3T1085UK is a temperature-to-digital converter with a -40 °C to +125 °C
range. The device can be communicated by a controller via the 2-wire serial
I3C (up to 12.5 MHz) and I2C (up to 3.4 MHz) interface.
Signed-off-by: Clark Wang <xiaoning.wang@....com>
Signed-off-by: Carlos Song <carlos.song@....com>
Signed-off-by: Frank Li <Frank.Li@....com>
---
drivers/iio/temperature/Kconfig | 1 +
drivers/iio/temperature/Makefile | 2 +
drivers/iio/temperature/p3t/Kconfig | 29 +++++++++++
drivers/iio/temperature/p3t/Makefile | 5 ++
drivers/iio/temperature/p3t/p3t1085.h | 31 ++++++++++++
drivers/iio/temperature/p3t/p3t1085_core.c | 79 ++++++++++++++++++++++++++++++
drivers/iio/temperature/p3t/p3t1085_i2c.c | 68 +++++++++++++++++++++++++
drivers/iio/temperature/p3t/p3t1085_i3c.c | 59 ++++++++++++++++++++++
8 files changed, 274 insertions(+)
diff --git a/drivers/iio/temperature/Kconfig b/drivers/iio/temperature/Kconfig
index 1244d8e17d504..7cdd49279aba2 100644
--- a/drivers/iio/temperature/Kconfig
+++ b/drivers/iio/temperature/Kconfig
@@ -182,4 +182,5 @@ config MCP9600
This driver can also be built as a module. If so, the module
will be called mcp9600.
+source "drivers/iio/temperature/p3t/Kconfig"
endmenu
diff --git a/drivers/iio/temperature/Makefile b/drivers/iio/temperature/Makefile
index 07d6e65709f7f..d5e89c20d58b6 100644
--- a/drivers/iio/temperature/Makefile
+++ b/drivers/iio/temperature/Makefile
@@ -19,3 +19,5 @@ obj-$(CONFIG_TMP007) += tmp007.o
obj-$(CONFIG_TMP117) += tmp117.o
obj-$(CONFIG_TSYS01) += tsys01.o
obj-$(CONFIG_TSYS02D) += tsys02d.o
+
+obj-y += p3t/
diff --git a/drivers/iio/temperature/p3t/Kconfig b/drivers/iio/temperature/p3t/Kconfig
new file mode 100644
index 0000000000000..09e925024b66f
--- /dev/null
+++ b/drivers/iio/temperature/p3t/Kconfig
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config IIO_P3T1085
+ tristate
+ depends on (I2C || I3C)
+
+config IIO_P3T1085_I2C
+ tristate "NXP P3T1085 temperature sensor I2C driver"
+ depends on I2C
+ select IIO_P3T1085
+ select REGMAP_I2C
+ help
+ Say yes here to build support for NXP P3T1085 I2C temperature
+ sensor.
+
+ To compile this driver as a module, choose M here: the module
+ will be called p3t1085_i2c
+
+config IIO_P3T1085_I3C
+ tristate "NXP P3T1085 temperature sensor I3C driver"
+ depends on I3C
+ select IIO_P3T1085
+ select REGMAP_I3C
+ help
+ Say yes here to build support for NXP P3T1085 I3C temperature
+ sensor.
+
+ To compile this driver as a module, choose M here: the module
+ will be called p3t1085_i3c
diff --git a/drivers/iio/temperature/p3t/Makefile b/drivers/iio/temperature/p3t/Makefile
new file mode 100644
index 0000000000000..21aaeb51e044d
--- /dev/null
+++ b/drivers/iio/temperature/p3t/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_IIO_P3T1085) += p3t1085_core.o
+obj-$(CONFIG_IIO_P3T1085_I2C) += p3t1085_i2c.o
+obj-$(CONFIG_IIO_P3T1085_I3C) += p3t1085_i3c.o
diff --git a/drivers/iio/temperature/p3t/p3t1085.h b/drivers/iio/temperature/p3t/p3t1085.h
new file mode 100644
index 0000000000000..b018a04e4aee4
--- /dev/null
+++ b/drivers/iio/temperature/p3t/p3t1085.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * NXP P3T1085 Temperature Sensor Driver
+ *
+ * Copyright 2024 NXP
+ */
+#ifndef P3T1085_H
+#define P3T1085_H
+
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+
+#define P3T1085_REG_TEMP 0x0
+#define P3T1085_REG_CFGR 0x1
+#define P3T1085_REG_HIGH_LIM 0x2
+#define P3T1085_REG_LOW_LIM 0x3
+
+#define P3T1085_RESOLUTION_10UC 62500
+
+enum p3t1085_hw_id {
+ P3T1085_ID,
+};
+
+struct p3t1085_data {
+ struct device *dev;
+ struct regmap *regmap;
+};
+
+int p3t1085_probe(struct device *dev, int irq, int hw_id, struct regmap *regmap);
+
+#endif /* P3T1085_H */
diff --git a/drivers/iio/temperature/p3t/p3t1085_core.c b/drivers/iio/temperature/p3t/p3t1085_core.c
new file mode 100644
index 0000000000000..4b00e606a6d04
--- /dev/null
+++ b/drivers/iio/temperature/p3t/p3t1085_core.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP P3T1085 Temperature Sensor Driver
+ *
+ * Copyright 2024 NXP
+ */
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#include "p3t1085.h"
+
+static int p3t1085_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *channel, int *val,
+ int *val2, long mask)
+{
+ struct p3t1085_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ ret = regmap_read(data->regmap, P3T1085_REG_TEMP, val);
+ if (ret < 0) {
+ dev_err(data->dev, "failed to read temperature register\n");
+ return ret;
+ }
+ *val = *val >> 4;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_chan_spec p3t1085_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ },
+};
+
+static const struct iio_info p3t1085_info = {
+ .read_raw = p3t1085_read_raw,
+};
+
+int p3t1085_probe(struct device *dev, int irq, int hw_id, struct regmap *regmap)
+{
+ struct p3t1085_data *data;
+ struct iio_dev *iio_dev;
+
+ iio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+ if (!iio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(iio_dev);
+ data->dev = dev;
+ data->regmap = regmap;
+
+ iio_dev->name = "p3t1085";
+ iio_dev->modes = INDIO_DIRECT_MODE;
+ iio_dev->info = &p3t1085_info;
+
+ iio_dev->channels = p3t1085_channels;
+ iio_dev->num_channels = ARRAY_SIZE(p3t1085_channels);
+
+ return devm_iio_device_register(dev, iio_dev);
+}
+EXPORT_SYMBOL_NS(p3t1085_probe, IIO_P3T1085);
+
+MODULE_AUTHOR("Xiaoning Wang <xiaoning.wang@....com>");
+MODULE_DESCRIPTION("NXP P3T1085 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/temperature/p3t/p3t1085_i2c.c b/drivers/iio/temperature/p3t/p3t1085_i2c.c
new file mode 100644
index 0000000000000..20e5f7a68dd9e
--- /dev/null
+++ b/drivers/iio/temperature/p3t/p3t1085_i2c.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP P3T1085 Temperature Sensor Driver
+ *
+ * Copyright 2024 NXP
+ */
+
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include "p3t1085.h"
+
+static const struct regmap_config p3t1085_i2c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+};
+
+static int p3t1085_i2c_probe(struct i2c_client *client)
+{
+ const struct i2c_device_id *id;
+ struct regmap *regmap;
+ int ret;
+
+ id = i2c_client_get_device_id(client);
+ if (!id)
+ return -EINVAL;
+
+ regmap = devm_regmap_init_i2c(client, &p3t1085_i2c_regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(&client->dev, PTR_ERR(regmap),
+ "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
+
+ ret = p3t1085_probe(&client->dev, client->irq, id->driver_data, regmap);
+ if (ret)
+ return dev_err_probe(&client->dev, ret, "Failed to probe\n");
+
+ return 0;
+}
+
+static const struct of_device_id p3t1085_i2c_of_match[] = {
+ { .compatible = "nxp,p3t1085", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, p3t1085_i2c_of_match);
+
+static const struct i2c_device_id p3t1085_i2c_id_table[] = {
+ { "p3t1085", P3T1085_ID },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, p3t1085_i2c_id_table);
+
+static struct i2c_driver p3t1085_driver = {
+ .driver = {
+ .name = "p3t1085_i2c",
+ .of_match_table = p3t1085_i2c_of_match,
+ },
+ .probe = p3t1085_i2c_probe,
+ .id_table = p3t1085_i2c_id_table,
+};
+module_i2c_driver(p3t1085_driver);
+
+MODULE_AUTHOR("Xiaoning Wang <xiaoning.wang@....com>");
+MODULE_DESCRIPTION("NXP P3T1085 i2c driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_P3T1085);
diff --git a/drivers/iio/temperature/p3t/p3t1085_i3c.c b/drivers/iio/temperature/p3t/p3t1085_i3c.c
new file mode 100644
index 0000000000000..0007d79aa0a6d
--- /dev/null
+++ b/drivers/iio/temperature/p3t/p3t1085_i3c.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NXP P3T1085 Temperature Sensor Driver
+ *
+ * Copyright 2024 NXP
+ */
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/i3c/device.h>
+#include <linux/i3c/master.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+#include "p3t1085.h"
+
+static const struct i3c_device_id p3t1085_i3c_ids[] = {
+ I3C_DEVICE(0x011B, 0x1529, (void *)P3T1085_ID),
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i3c, p3t1085_i3c_ids);
+
+static int p3t1085_i3c_probe(struct i3c_device *i3cdev)
+{
+ const struct regmap_config p3t1085_i3c_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ };
+ int ret;
+
+ const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
+ p3t1085_i3c_ids);
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i3c(i3cdev, &p3t1085_i3c_regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(&i3cdev->dev, PTR_ERR(regmap),
+ "Failed to register i3c regmap\n");
+
+ ret = p3t1085_probe(&i3cdev->dev, 0, (uintptr_t)id->data, regmap);
+ if (ret)
+ return dev_err_probe(&i3cdev->dev, ret, "Failed to probe\n");
+
+ return 0;
+}
+
+static struct i3c_driver p3t1085_driver = {
+ .driver = {
+ .name = "p3t1085_i3c",
+ },
+ .probe = p3t1085_i3c_probe,
+ .id_table = p3t1085_i3c_ids,
+};
+module_i3c_driver(p3t1085_driver);
+
+MODULE_AUTHOR("Xiaoning Wang <xiaoning.wang@....com>");
+MODULE_DESCRIPTION("NXP p3t1085 i3c driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_P3T1085);
--
2.34.1
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