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Based on 1 normalized pattern(s): this file is subject to the terms and conditions of version 2 of the gnu general public license see the file copying in the main directory of this archive for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 55 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.108941081@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
662 lines
18 KiB
C
662 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* mlx90614.c - Support for Melexis MLX90614 contactless IR temperature sensor
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*
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* Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
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* Copyright (c) 2015 Essensium NV
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* Copyright (c) 2015 Melexis
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*
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* Driver for the Melexis MLX90614 I2C 16-bit IR thermopile sensor
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*
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* (7-bit I2C slave address 0x5a, 100KHz bus speed only!)
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*
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* To wake up from sleep mode, the SDA line must be held low while SCL is high
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* for at least 33ms. This is achieved with an extra GPIO that can be connected
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* directly to the SDA line. In normal operation, the GPIO is set as input and
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* will not interfere in I2C communication. While the GPIO is driven low, the
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* i2c adapter is locked since it cannot be used by other clients. The SCL line
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* always has a pull-up so we do not need an extra GPIO to drive it high. If
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* the "wakeup" GPIO is not given, power management will be disabled.
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/jiffies.h>
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#include <linux/gpio/consumer.h>
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#include <linux/pm_runtime.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#define MLX90614_OP_RAM 0x00
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#define MLX90614_OP_EEPROM 0x20
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#define MLX90614_OP_SLEEP 0xff
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/* RAM offsets with 16-bit data, MSB first */
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#define MLX90614_RAW1 (MLX90614_OP_RAM | 0x04) /* raw data IR channel 1 */
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#define MLX90614_RAW2 (MLX90614_OP_RAM | 0x05) /* raw data IR channel 2 */
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#define MLX90614_TA (MLX90614_OP_RAM | 0x06) /* ambient temperature */
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#define MLX90614_TOBJ1 (MLX90614_OP_RAM | 0x07) /* object 1 temperature */
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#define MLX90614_TOBJ2 (MLX90614_OP_RAM | 0x08) /* object 2 temperature */
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/* EEPROM offsets with 16-bit data, MSB first */
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#define MLX90614_EMISSIVITY (MLX90614_OP_EEPROM | 0x04) /* emissivity correction coefficient */
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#define MLX90614_CONFIG (MLX90614_OP_EEPROM | 0x05) /* configuration register */
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/* Control bits in configuration register */
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#define MLX90614_CONFIG_IIR_SHIFT 0 /* IIR coefficient */
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#define MLX90614_CONFIG_IIR_MASK (0x7 << MLX90614_CONFIG_IIR_SHIFT)
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#define MLX90614_CONFIG_DUAL_SHIFT 6 /* single (0) or dual (1) IR sensor */
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#define MLX90614_CONFIG_DUAL_MASK (1 << MLX90614_CONFIG_DUAL_SHIFT)
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#define MLX90614_CONFIG_FIR_SHIFT 8 /* FIR coefficient */
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#define MLX90614_CONFIG_FIR_MASK (0x7 << MLX90614_CONFIG_FIR_SHIFT)
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#define MLX90614_CONFIG_GAIN_SHIFT 11 /* gain */
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#define MLX90614_CONFIG_GAIN_MASK (0x7 << MLX90614_CONFIG_GAIN_SHIFT)
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/* Timings (in ms) */
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#define MLX90614_TIMING_EEPROM 20 /* time for EEPROM write/erase to complete */
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#define MLX90614_TIMING_WAKEUP 34 /* time to hold SDA low for wake-up */
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#define MLX90614_TIMING_STARTUP 250 /* time before first data after wake-up */
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#define MLX90614_AUTOSLEEP_DELAY 5000 /* default autosleep delay */
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/* Magic constants */
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#define MLX90614_CONST_OFFSET_DEC -13657 /* decimal part of the Kelvin offset */
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#define MLX90614_CONST_OFFSET_REM 500000 /* remainder of offset (273.15*50) */
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#define MLX90614_CONST_SCALE 20 /* Scale in milliKelvin (0.02 * 1000) */
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#define MLX90614_CONST_RAW_EMISSIVITY_MAX 65535 /* max value for emissivity */
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#define MLX90614_CONST_EMISSIVITY_RESOLUTION 15259 /* 1/65535 ~ 0.000015259 */
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#define MLX90614_CONST_FIR 0x7 /* Fixed value for FIR part of low pass filter */
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struct mlx90614_data {
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struct i2c_client *client;
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struct mutex lock; /* for EEPROM access only */
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struct gpio_desc *wakeup_gpio; /* NULL to disable sleep/wake-up */
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unsigned long ready_timestamp; /* in jiffies */
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};
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/* Bandwidth values for IIR filtering */
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static const int mlx90614_iir_values[] = {77, 31, 20, 15, 723, 153, 110, 86};
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static IIO_CONST_ATTR(in_temp_object_filter_low_pass_3db_frequency_available,
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"0.15 0.20 0.31 0.77 0.86 1.10 1.53 7.23");
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static struct attribute *mlx90614_attributes[] = {
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&iio_const_attr_in_temp_object_filter_low_pass_3db_frequency_available.dev_attr.attr,
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NULL,
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};
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static const struct attribute_group mlx90614_attr_group = {
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.attrs = mlx90614_attributes,
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};
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/*
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* Erase an address and write word.
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* The mutex must be locked before calling.
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*/
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static s32 mlx90614_write_word(const struct i2c_client *client, u8 command,
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u16 value)
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{
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/*
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* Note: The mlx90614 requires a PEC on writing but does not send us a
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* valid PEC on reading. Hence, we cannot set I2C_CLIENT_PEC in
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* i2c_client.flags. As a workaround, we use i2c_smbus_xfer here.
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*/
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union i2c_smbus_data data;
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s32 ret;
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dev_dbg(&client->dev, "Writing 0x%x to address 0x%x", value, command);
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data.word = 0x0000; /* erase command */
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ret = i2c_smbus_xfer(client->adapter, client->addr,
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client->flags | I2C_CLIENT_PEC,
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I2C_SMBUS_WRITE, command,
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I2C_SMBUS_WORD_DATA, &data);
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if (ret < 0)
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return ret;
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msleep(MLX90614_TIMING_EEPROM);
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data.word = value; /* actual write */
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ret = i2c_smbus_xfer(client->adapter, client->addr,
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client->flags | I2C_CLIENT_PEC,
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I2C_SMBUS_WRITE, command,
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I2C_SMBUS_WORD_DATA, &data);
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msleep(MLX90614_TIMING_EEPROM);
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return ret;
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}
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/*
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* Find the IIR value inside mlx90614_iir_values array and return its position
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* which is equivalent to the bit value in sensor register
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*/
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static inline s32 mlx90614_iir_search(const struct i2c_client *client,
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int value)
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{
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int i;
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s32 ret;
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for (i = 0; i < ARRAY_SIZE(mlx90614_iir_values); ++i) {
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if (value == mlx90614_iir_values[i])
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break;
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}
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if (i == ARRAY_SIZE(mlx90614_iir_values))
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return -EINVAL;
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/*
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* CONFIG register values must not be changed so
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* we must read them before we actually write
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* changes
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*/
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ret = i2c_smbus_read_word_data(client, MLX90614_CONFIG);
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if (ret < 0)
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return ret;
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ret &= ~MLX90614_CONFIG_FIR_MASK;
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ret |= MLX90614_CONST_FIR << MLX90614_CONFIG_FIR_SHIFT;
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ret &= ~MLX90614_CONFIG_IIR_MASK;
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ret |= i << MLX90614_CONFIG_IIR_SHIFT;
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/* Write changed values */
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ret = mlx90614_write_word(client, MLX90614_CONFIG, ret);
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return ret;
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}
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#ifdef CONFIG_PM
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/*
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* If @startup is true, make sure MLX90614_TIMING_STARTUP ms have elapsed since
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* the last wake-up. This is normally only needed to get a valid temperature
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* reading. EEPROM access does not need such delay.
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* Return 0 on success, <0 on error.
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*/
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static int mlx90614_power_get(struct mlx90614_data *data, bool startup)
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{
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unsigned long now;
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if (!data->wakeup_gpio)
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return 0;
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pm_runtime_get_sync(&data->client->dev);
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if (startup) {
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now = jiffies;
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if (time_before(now, data->ready_timestamp) &&
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msleep_interruptible(jiffies_to_msecs(
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data->ready_timestamp - now)) != 0) {
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pm_runtime_put_autosuspend(&data->client->dev);
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return -EINTR;
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}
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}
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return 0;
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}
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static void mlx90614_power_put(struct mlx90614_data *data)
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{
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if (!data->wakeup_gpio)
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return;
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pm_runtime_mark_last_busy(&data->client->dev);
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pm_runtime_put_autosuspend(&data->client->dev);
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}
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#else
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static inline int mlx90614_power_get(struct mlx90614_data *data, bool startup)
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{
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return 0;
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}
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static inline void mlx90614_power_put(struct mlx90614_data *data)
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{
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}
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#endif
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static int mlx90614_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *channel, int *val,
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int *val2, long mask)
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{
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struct mlx90614_data *data = iio_priv(indio_dev);
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u8 cmd;
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s32 ret;
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switch (mask) {
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case IIO_CHAN_INFO_RAW: /* 0.02K / LSB */
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switch (channel->channel2) {
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case IIO_MOD_TEMP_AMBIENT:
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cmd = MLX90614_TA;
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break;
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case IIO_MOD_TEMP_OBJECT:
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switch (channel->channel) {
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case 0:
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cmd = MLX90614_TOBJ1;
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break;
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case 1:
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cmd = MLX90614_TOBJ2;
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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ret = mlx90614_power_get(data, true);
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if (ret < 0)
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return ret;
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ret = i2c_smbus_read_word_data(data->client, cmd);
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mlx90614_power_put(data);
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if (ret < 0)
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return ret;
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/* MSB is an error flag */
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if (ret & 0x8000)
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return -EIO;
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*val = ret;
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return IIO_VAL_INT;
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case IIO_CHAN_INFO_OFFSET:
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*val = MLX90614_CONST_OFFSET_DEC;
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*val2 = MLX90614_CONST_OFFSET_REM;
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return IIO_VAL_INT_PLUS_MICRO;
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case IIO_CHAN_INFO_SCALE:
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*val = MLX90614_CONST_SCALE;
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return IIO_VAL_INT;
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case IIO_CHAN_INFO_CALIBEMISSIVITY: /* 1/65535 / LSB */
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mlx90614_power_get(data, false);
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mutex_lock(&data->lock);
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ret = i2c_smbus_read_word_data(data->client,
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MLX90614_EMISSIVITY);
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mutex_unlock(&data->lock);
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mlx90614_power_put(data);
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if (ret < 0)
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return ret;
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if (ret == MLX90614_CONST_RAW_EMISSIVITY_MAX) {
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*val = 1;
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*val2 = 0;
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} else {
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*val = 0;
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*val2 = ret * MLX90614_CONST_EMISSIVITY_RESOLUTION;
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}
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return IIO_VAL_INT_PLUS_NANO;
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case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR setting with
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FIR = 1024 */
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mlx90614_power_get(data, false);
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mutex_lock(&data->lock);
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ret = i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);
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mutex_unlock(&data->lock);
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mlx90614_power_put(data);
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if (ret < 0)
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return ret;
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*val = mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] / 100;
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*val2 = (mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] % 100) *
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10000;
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return IIO_VAL_INT_PLUS_MICRO;
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default:
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return -EINVAL;
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}
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}
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static int mlx90614_write_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *channel, int val,
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int val2, long mask)
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{
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struct mlx90614_data *data = iio_priv(indio_dev);
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s32 ret;
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switch (mask) {
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case IIO_CHAN_INFO_CALIBEMISSIVITY: /* 1/65535 / LSB */
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if (val < 0 || val2 < 0 || val > 1 || (val == 1 && val2 != 0))
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return -EINVAL;
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val = val * MLX90614_CONST_RAW_EMISSIVITY_MAX +
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val2 / MLX90614_CONST_EMISSIVITY_RESOLUTION;
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mlx90614_power_get(data, false);
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mutex_lock(&data->lock);
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ret = mlx90614_write_word(data->client, MLX90614_EMISSIVITY,
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val);
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mutex_unlock(&data->lock);
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mlx90614_power_put(data);
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return ret;
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case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR Filter setting */
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if (val < 0 || val2 < 0)
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return -EINVAL;
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mlx90614_power_get(data, false);
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mutex_lock(&data->lock);
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ret = mlx90614_iir_search(data->client,
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val * 100 + val2 / 10000);
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mutex_unlock(&data->lock);
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mlx90614_power_put(data);
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return ret;
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default:
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return -EINVAL;
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}
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}
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static int mlx90614_write_raw_get_fmt(struct iio_dev *indio_dev,
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struct iio_chan_spec const *channel,
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long mask)
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{
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switch (mask) {
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case IIO_CHAN_INFO_CALIBEMISSIVITY:
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return IIO_VAL_INT_PLUS_NANO;
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case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
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return IIO_VAL_INT_PLUS_MICRO;
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default:
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return -EINVAL;
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}
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}
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static const struct iio_chan_spec mlx90614_channels[] = {
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{
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.type = IIO_TEMP,
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.modified = 1,
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.channel2 = IIO_MOD_TEMP_AMBIENT,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE),
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},
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{
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.type = IIO_TEMP,
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.modified = 1,
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.channel2 = IIO_MOD_TEMP_OBJECT,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
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BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE),
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},
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{
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.type = IIO_TEMP,
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.indexed = 1,
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.modified = 1,
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.channel = 1,
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.channel2 = IIO_MOD_TEMP_OBJECT,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
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BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE),
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},
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};
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static const struct iio_info mlx90614_info = {
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.read_raw = mlx90614_read_raw,
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.write_raw = mlx90614_write_raw,
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.write_raw_get_fmt = mlx90614_write_raw_get_fmt,
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.attrs = &mlx90614_attr_group,
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};
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#ifdef CONFIG_PM
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static int mlx90614_sleep(struct mlx90614_data *data)
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{
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s32 ret;
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if (!data->wakeup_gpio) {
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dev_dbg(&data->client->dev, "Sleep disabled");
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return -ENOSYS;
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}
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dev_dbg(&data->client->dev, "Requesting sleep");
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mutex_lock(&data->lock);
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ret = i2c_smbus_xfer(data->client->adapter, data->client->addr,
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data->client->flags | I2C_CLIENT_PEC,
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I2C_SMBUS_WRITE, MLX90614_OP_SLEEP,
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I2C_SMBUS_BYTE, NULL);
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mutex_unlock(&data->lock);
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return ret;
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}
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static int mlx90614_wakeup(struct mlx90614_data *data)
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{
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if (!data->wakeup_gpio) {
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dev_dbg(&data->client->dev, "Wake-up disabled");
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return -ENOSYS;
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}
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dev_dbg(&data->client->dev, "Requesting wake-up");
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i2c_lock_bus(data->client->adapter, I2C_LOCK_ROOT_ADAPTER);
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gpiod_direction_output(data->wakeup_gpio, 0);
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msleep(MLX90614_TIMING_WAKEUP);
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gpiod_direction_input(data->wakeup_gpio);
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i2c_unlock_bus(data->client->adapter, I2C_LOCK_ROOT_ADAPTER);
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data->ready_timestamp = jiffies +
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msecs_to_jiffies(MLX90614_TIMING_STARTUP);
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/*
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* Quirk: the i2c controller may get confused right after the
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* wake-up signal has been sent. As a workaround, do a dummy read.
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* If the read fails, the controller will probably be reset so that
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* further reads will work.
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*/
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i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Return wake-up GPIO or NULL if sleep functionality should be disabled. */
|
|
static struct gpio_desc *mlx90614_probe_wakeup(struct i2c_client *client)
|
|
{
|
|
struct gpio_desc *gpio;
|
|
|
|
if (!i2c_check_functionality(client->adapter,
|
|
I2C_FUNC_SMBUS_WRITE_BYTE)) {
|
|
dev_info(&client->dev,
|
|
"i2c adapter does not support SMBUS_WRITE_BYTE, sleep disabled");
|
|
return NULL;
|
|
}
|
|
|
|
gpio = devm_gpiod_get_optional(&client->dev, "wakeup", GPIOD_IN);
|
|
|
|
if (IS_ERR(gpio)) {
|
|
dev_warn(&client->dev,
|
|
"gpio acquisition failed with error %ld, sleep disabled",
|
|
PTR_ERR(gpio));
|
|
return NULL;
|
|
} else if (!gpio) {
|
|
dev_info(&client->dev,
|
|
"wakeup-gpio not found, sleep disabled");
|
|
}
|
|
|
|
return gpio;
|
|
}
|
|
#else
|
|
static inline int mlx90614_sleep(struct mlx90614_data *data)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int mlx90614_wakeup(struct mlx90614_data *data)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline struct gpio_desc *mlx90614_probe_wakeup(struct i2c_client *client)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
/* Return 0 for single sensor, 1 for dual sensor, <0 on error. */
|
|
static int mlx90614_probe_num_ir_sensors(struct i2c_client *client)
|
|
{
|
|
s32 ret;
|
|
|
|
ret = i2c_smbus_read_word_data(client, MLX90614_CONFIG);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return (ret & MLX90614_CONFIG_DUAL_MASK) ? 1 : 0;
|
|
}
|
|
|
|
static int mlx90614_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct iio_dev *indio_dev;
|
|
struct mlx90614_data *data;
|
|
int ret;
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
|
|
return -EOPNOTSUPP;
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
data = iio_priv(indio_dev);
|
|
i2c_set_clientdata(client, indio_dev);
|
|
data->client = client;
|
|
mutex_init(&data->lock);
|
|
data->wakeup_gpio = mlx90614_probe_wakeup(client);
|
|
|
|
mlx90614_wakeup(data);
|
|
|
|
indio_dev->dev.parent = &client->dev;
|
|
indio_dev->name = id->name;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->info = &mlx90614_info;
|
|
|
|
ret = mlx90614_probe_num_ir_sensors(client);
|
|
switch (ret) {
|
|
case 0:
|
|
dev_dbg(&client->dev, "Found single sensor");
|
|
indio_dev->channels = mlx90614_channels;
|
|
indio_dev->num_channels = 2;
|
|
break;
|
|
case 1:
|
|
dev_dbg(&client->dev, "Found dual sensor");
|
|
indio_dev->channels = mlx90614_channels;
|
|
indio_dev->num_channels = 3;
|
|
break;
|
|
default:
|
|
return ret;
|
|
}
|
|
|
|
if (data->wakeup_gpio) {
|
|
pm_runtime_set_autosuspend_delay(&client->dev,
|
|
MLX90614_AUTOSLEEP_DELAY);
|
|
pm_runtime_use_autosuspend(&client->dev);
|
|
pm_runtime_set_active(&client->dev);
|
|
pm_runtime_enable(&client->dev);
|
|
}
|
|
|
|
return iio_device_register(indio_dev);
|
|
}
|
|
|
|
static int mlx90614_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
struct mlx90614_data *data = iio_priv(indio_dev);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
if (data->wakeup_gpio) {
|
|
pm_runtime_disable(&client->dev);
|
|
if (!pm_runtime_status_suspended(&client->dev))
|
|
mlx90614_sleep(data);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id mlx90614_id[] = {
|
|
{ "mlx90614", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, mlx90614_id);
|
|
|
|
static const struct of_device_id mlx90614_of_match[] = {
|
|
{ .compatible = "melexis,mlx90614" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mlx90614_of_match);
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int mlx90614_pm_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct mlx90614_data *data = iio_priv(indio_dev);
|
|
|
|
if (data->wakeup_gpio && pm_runtime_active(dev))
|
|
return mlx90614_sleep(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mlx90614_pm_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct mlx90614_data *data = iio_priv(indio_dev);
|
|
int err;
|
|
|
|
if (data->wakeup_gpio) {
|
|
err = mlx90614_wakeup(data);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
pm_runtime_disable(dev);
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static int mlx90614_pm_runtime_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct mlx90614_data *data = iio_priv(indio_dev);
|
|
|
|
return mlx90614_sleep(data);
|
|
}
|
|
|
|
static int mlx90614_pm_runtime_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct mlx90614_data *data = iio_priv(indio_dev);
|
|
|
|
return mlx90614_wakeup(data);
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops mlx90614_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(mlx90614_pm_suspend, mlx90614_pm_resume)
|
|
SET_RUNTIME_PM_OPS(mlx90614_pm_runtime_suspend,
|
|
mlx90614_pm_runtime_resume, NULL)
|
|
};
|
|
|
|
static struct i2c_driver mlx90614_driver = {
|
|
.driver = {
|
|
.name = "mlx90614",
|
|
.of_match_table = mlx90614_of_match,
|
|
.pm = &mlx90614_pm_ops,
|
|
},
|
|
.probe = mlx90614_probe,
|
|
.remove = mlx90614_remove,
|
|
.id_table = mlx90614_id,
|
|
};
|
|
module_i2c_driver(mlx90614_driver);
|
|
|
|
MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
|
|
MODULE_AUTHOR("Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>");
|
|
MODULE_AUTHOR("Crt Mori <cmo@melexis.com>");
|
|
MODULE_DESCRIPTION("Melexis MLX90614 contactless IR temperature sensor driver");
|
|
MODULE_LICENSE("GPL");
|