diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/temperature/mlx90614.c | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/drivers/iio/temperature/mlx90614.c b/drivers/iio/temperature/mlx90614.c index ab83e97594bd..676dc8701924 100644 --- a/drivers/iio/temperature/mlx90614.c +++ b/drivers/iio/temperature/mlx90614.c @@ -1,12 +1,15 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * mlx90614.c - Support for Melexis MLX90614 contactless IR temperature sensor + * mlx90614.c - Support for Melexis MLX90614/MLX90615 contactless IR temperature sensor * * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net> * Copyright (c) 2015 Essensium NV * Copyright (c) 2015 Melexis * - * Driver for the Melexis MLX90614 I2C 16-bit IR thermopile sensor + * Driver for the Melexis MLX90614/MLX90615 I2C 16-bit IR thermopile sensor + * + * MLX90614 - 17-bit ADC + MLX90302 DSP + * MLX90615 - 16-bit ADC + MLX90325 DSP * * (7-bit I2C slave address 0x5a, 100KHz bus speed only!) * @@ -35,6 +38,10 @@ #define MLX90614_OP_EEPROM 0x20 #define MLX90614_OP_SLEEP 0xff +#define MLX90615_OP_EEPROM 0x10 +#define MLX90615_OP_RAM 0x20 +#define MLX90615_OP_SLEEP 0xc6 + /* Control bits in configuration register */ #define MLX90614_CONFIG_IIR_SHIFT 0 /* IIR coefficient */ #define MLX90614_CONFIG_IIR_MASK (0x7 << MLX90614_CONFIG_IIR_SHIFT) @@ -43,11 +50,16 @@ #define MLX90614_CONFIG_FIR_SHIFT 8 /* FIR coefficient */ #define MLX90614_CONFIG_FIR_MASK (0x7 << MLX90614_CONFIG_FIR_SHIFT) +#define MLX90615_CONFIG_IIR_SHIFT 12 /* IIR coefficient */ +#define MLX90615_CONFIG_IIR_MASK (0x7 << MLX90615_CONFIG_IIR_SHIFT) + /* Timings (in ms) */ #define MLX90614_TIMING_EEPROM 20 /* time for EEPROM write/erase to complete */ #define MLX90614_TIMING_WAKEUP 34 /* time to hold SDA low for wake-up */ #define MLX90614_TIMING_STARTUP 250 /* time before first data after wake-up */ +#define MLX90615_TIMING_WAKEUP 22 /* time to hold SCL low for wake-up */ + #define MLX90614_AUTOSLEEP_DELAY 5000 /* default autosleep delay */ /* Magic constants */ @@ -305,8 +317,8 @@ static int mlx90614_read_raw(struct iio_dev *indio_dev, *val2 = ret * NSEC_PER_SEC / chip_info->emissivity_max; } return IIO_VAL_INT_PLUS_NANO; - case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR setting with - FIR = 1024 */ + /* IIR setting with FIR=1024 (MLX90614) or FIR=65536 (MLX90615) */ + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: ret = mlx90614_power_get(data, false); if (ret < 0) return ret; @@ -664,14 +676,42 @@ static const struct mlx_chip_info mlx90614_chip_info = { }, }; +static const struct mlx_chip_info mlx90615_chip_info = { + .op_eeprom_emissivity = MLX90615_OP_EEPROM | 0x03, + .op_eeprom_config1 = MLX90615_OP_EEPROM | 0x02, + .op_ram_ta = MLX90615_OP_RAM | 0x06, + .op_ram_tobj1 = MLX90615_OP_RAM | 0x07, + .op_ram_tobj2 = MLX90615_OP_RAM | 0x08, + .op_sleep = MLX90615_OP_SLEEP, + .dual_channel = false, + .wakeup_delay_ms = MLX90615_TIMING_WAKEUP, + .emissivity_max = 16383, + .fir_config_mask = 0, /* MLX90615 FIR is fixed */ + .iir_config_mask = MLX90615_CONFIG_IIR_MASK, + /* IIR value 0 is FORBIDDEN COMBINATION on MLX90615 */ + .iir_valid_offset = 1, + .iir_values = { 500, 50, 30, 20, 15, 13, 10 }, + .iir_freqs = { + { 0, 100000 }, /* 14% ~= 0.10 Hz */ + { 0, 130000 }, /* 17% ~= 0.13 Hz */ + { 0, 150000 }, /* 20% ~= 0.15 Hz */ + { 0, 200000 }, /* 25% ~= 0.20 Hz */ + { 0, 300000 }, /* 33% ~= 0.30 Hz */ + { 0, 500000 }, /* 50% ~= 0.50 Hz */ + { 5, 000000 }, /* 100% ~= 5.00 Hz */ + }, +}; + static const struct i2c_device_id mlx90614_id[] = { { "mlx90614", .driver_data = (kernel_ulong_t)&mlx90614_chip_info }, + { "mlx90615", .driver_data = (kernel_ulong_t)&mlx90615_chip_info }, { } }; MODULE_DEVICE_TABLE(i2c, mlx90614_id); static const struct of_device_id mlx90614_of_match[] = { { .compatible = "melexis,mlx90614", .data = &mlx90614_chip_info }, + { .compatible = "melexis,mlx90615", .data = &mlx90615_chip_info }, { } }; MODULE_DEVICE_TABLE(of, mlx90614_of_match); |