1c87742abSCrt Mori // SPDX-License-Identifier: GPL-2.0 2c87742abSCrt Mori /* 3c87742abSCrt Mori * mlx90632.c - Melexis MLX90632 contactless IR temperature sensor 4c87742abSCrt Mori * 5c87742abSCrt Mori * Copyright (c) 2017 Melexis <cmo@melexis.com> 6c87742abSCrt Mori * 7c87742abSCrt Mori * Driver for the Melexis MLX90632 I2C 16-bit IR thermopile sensor 8c87742abSCrt Mori */ 9c87742abSCrt Mori #include <linux/delay.h> 10c87742abSCrt Mori #include <linux/err.h> 11c87742abSCrt Mori #include <linux/gpio/consumer.h> 12c87742abSCrt Mori #include <linux/i2c.h> 13c87742abSCrt Mori #include <linux/kernel.h> 14c87742abSCrt Mori #include <linux/module.h> 15c87742abSCrt Mori #include <linux/math64.h> 16c87742abSCrt Mori #include <linux/of.h> 17c87742abSCrt Mori #include <linux/pm_runtime.h> 18c87742abSCrt Mori #include <linux/regmap.h> 19c87742abSCrt Mori 20c87742abSCrt Mori #include <linux/iio/iio.h> 21c87742abSCrt Mori #include <linux/iio/sysfs.h> 22c87742abSCrt Mori 23c87742abSCrt Mori /* Memory sections addresses */ 24c87742abSCrt Mori #define MLX90632_ADDR_RAM 0x4000 /* Start address of ram */ 25c87742abSCrt Mori #define MLX90632_ADDR_EEPROM 0x2480 /* Start address of user eeprom */ 26c87742abSCrt Mori 27c87742abSCrt Mori /* EEPROM addresses - used at startup */ 28c87742abSCrt Mori #define MLX90632_EE_CTRL 0x24d4 /* Control register initial value */ 29c87742abSCrt Mori #define MLX90632_EE_I2C_ADDR 0x24d5 /* I2C address register initial value */ 30c87742abSCrt Mori #define MLX90632_EE_VERSION 0x240b /* EEPROM version reg address */ 31c87742abSCrt Mori #define MLX90632_EE_P_R 0x240c /* P_R calibration register 32bit */ 32c87742abSCrt Mori #define MLX90632_EE_P_G 0x240e /* P_G calibration register 32bit */ 33c87742abSCrt Mori #define MLX90632_EE_P_T 0x2410 /* P_T calibration register 32bit */ 34c87742abSCrt Mori #define MLX90632_EE_P_O 0x2412 /* P_O calibration register 32bit */ 35c87742abSCrt Mori #define MLX90632_EE_Aa 0x2414 /* Aa calibration register 32bit */ 36c87742abSCrt Mori #define MLX90632_EE_Ab 0x2416 /* Ab calibration register 32bit */ 37c87742abSCrt Mori #define MLX90632_EE_Ba 0x2418 /* Ba calibration register 32bit */ 38c87742abSCrt Mori #define MLX90632_EE_Bb 0x241a /* Bb calibration register 32bit */ 39c87742abSCrt Mori #define MLX90632_EE_Ca 0x241c /* Ca calibration register 32bit */ 40c87742abSCrt Mori #define MLX90632_EE_Cb 0x241e /* Cb calibration register 32bit */ 41c87742abSCrt Mori #define MLX90632_EE_Da 0x2420 /* Da calibration register 32bit */ 42c87742abSCrt Mori #define MLX90632_EE_Db 0x2422 /* Db calibration register 32bit */ 43c87742abSCrt Mori #define MLX90632_EE_Ea 0x2424 /* Ea calibration register 32bit */ 44c87742abSCrt Mori #define MLX90632_EE_Eb 0x2426 /* Eb calibration register 32bit */ 45c87742abSCrt Mori #define MLX90632_EE_Fa 0x2428 /* Fa calibration register 32bit */ 46c87742abSCrt Mori #define MLX90632_EE_Fb 0x242a /* Fb calibration register 32bit */ 47c87742abSCrt Mori #define MLX90632_EE_Ga 0x242c /* Ga calibration register 32bit */ 48c87742abSCrt Mori 49c87742abSCrt Mori #define MLX90632_EE_Gb 0x242e /* Gb calibration register 16bit */ 50c87742abSCrt Mori #define MLX90632_EE_Ka 0x242f /* Ka calibration register 16bit */ 51c87742abSCrt Mori 52c87742abSCrt Mori #define MLX90632_EE_Ha 0x2481 /* Ha customer calib value reg 16bit */ 53c87742abSCrt Mori #define MLX90632_EE_Hb 0x2482 /* Hb customer calib value reg 16bit */ 54c87742abSCrt Mori 55c87742abSCrt Mori /* Register addresses - volatile */ 56c87742abSCrt Mori #define MLX90632_REG_I2C_ADDR 0x3000 /* Chip I2C address register */ 57c87742abSCrt Mori 58c87742abSCrt Mori /* Control register address - volatile */ 59c87742abSCrt Mori #define MLX90632_REG_CONTROL 0x3001 /* Control Register address */ 60c87742abSCrt Mori #define MLX90632_CFG_PWR_MASK GENMASK(2, 1) /* PowerMode Mask */ 61c87742abSCrt Mori /* PowerModes statuses */ 62c87742abSCrt Mori #define MLX90632_PWR_STATUS(ctrl_val) (ctrl_val << 1) 63c87742abSCrt Mori #define MLX90632_PWR_STATUS_HALT MLX90632_PWR_STATUS(0) /* hold */ 64c87742abSCrt Mori #define MLX90632_PWR_STATUS_SLEEP_STEP MLX90632_PWR_STATUS(1) /* sleep step*/ 65c87742abSCrt Mori #define MLX90632_PWR_STATUS_STEP MLX90632_PWR_STATUS(2) /* step */ 66c87742abSCrt Mori #define MLX90632_PWR_STATUS_CONTINUOUS MLX90632_PWR_STATUS(3) /* continuous*/ 67c87742abSCrt Mori 68c87742abSCrt Mori /* Device status register - volatile */ 69c87742abSCrt Mori #define MLX90632_REG_STATUS 0x3fff /* Device status register */ 70c87742abSCrt Mori #define MLX90632_STAT_BUSY BIT(10) /* Device busy indicator */ 71c87742abSCrt Mori #define MLX90632_STAT_EE_BUSY BIT(9) /* EEPROM busy indicator */ 72c87742abSCrt Mori #define MLX90632_STAT_BRST BIT(8) /* Brown out reset indicator */ 73c87742abSCrt Mori #define MLX90632_STAT_CYCLE_POS GENMASK(6, 2) /* Data position */ 74c87742abSCrt Mori #define MLX90632_STAT_DATA_RDY BIT(0) /* Data ready indicator */ 75c87742abSCrt Mori 76c87742abSCrt Mori /* RAM_MEAS address-es for each channel */ 77c87742abSCrt Mori #define MLX90632_RAM_1(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num) 78c87742abSCrt Mori #define MLX90632_RAM_2(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num + 1) 79c87742abSCrt Mori #define MLX90632_RAM_3(meas_num) (MLX90632_ADDR_RAM + 3 * meas_num + 2) 80c87742abSCrt Mori 81c87742abSCrt Mori /* Magic constants */ 82c87742abSCrt Mori #define MLX90632_ID_MEDICAL 0x0105 /* EEPROM DSPv5 Medical device id */ 83c87742abSCrt Mori #define MLX90632_ID_CONSUMER 0x0205 /* EEPROM DSPv5 Consumer device id */ 84389fc70bSCrt Mori #define MLX90632_DSP_VERSION 5 /* DSP version */ 85389fc70bSCrt Mori #define MLX90632_DSP_MASK GENMASK(7, 0) /* DSP version in EE_VERSION */ 86c87742abSCrt Mori #define MLX90632_RESET_CMD 0x0006 /* Reset sensor (address or global) */ 87c87742abSCrt Mori #define MLX90632_REF_12 12LL /**< ResCtrlRef value of Ch 1 or Ch 2 */ 88c87742abSCrt Mori #define MLX90632_REF_3 12LL /**< ResCtrlRef value of Channel 3 */ 89c87742abSCrt Mori #define MLX90632_MAX_MEAS_NUM 31 /**< Maximum measurements in list */ 90c87742abSCrt Mori #define MLX90632_SLEEP_DELAY_MS 3000 /**< Autosleep delay */ 91c87742abSCrt Mori 92856437dbSCrt Mori /** 93856437dbSCrt Mori * struct mlx90632_data - private data for the MLX90632 device 94856437dbSCrt Mori * @client: I2C client of the device 95856437dbSCrt Mori * @lock: Internal mutex for multiple reads for single measurement 96856437dbSCrt Mori * @regmap: Regmap of the device 97856437dbSCrt Mori * @emissivity: Object emissivity from 0 to 1000 where 1000 = 1. 98856437dbSCrt Mori */ 99c87742abSCrt Mori struct mlx90632_data { 100c87742abSCrt Mori struct i2c_client *client; 101856437dbSCrt Mori struct mutex lock; 102c87742abSCrt Mori struct regmap *regmap; 103c87742abSCrt Mori u16 emissivity; 104c87742abSCrt Mori }; 105c87742abSCrt Mori 106c87742abSCrt Mori static const struct regmap_range mlx90632_volatile_reg_range[] = { 107c87742abSCrt Mori regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL), 108c87742abSCrt Mori regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS), 109c87742abSCrt Mori regmap_reg_range(MLX90632_RAM_1(0), 110c87742abSCrt Mori MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)), 111c87742abSCrt Mori }; 112c87742abSCrt Mori 113c87742abSCrt Mori static const struct regmap_access_table mlx90632_volatile_regs_tbl = { 114c87742abSCrt Mori .yes_ranges = mlx90632_volatile_reg_range, 115c87742abSCrt Mori .n_yes_ranges = ARRAY_SIZE(mlx90632_volatile_reg_range), 116c87742abSCrt Mori }; 117c87742abSCrt Mori 118c87742abSCrt Mori static const struct regmap_range mlx90632_read_reg_range[] = { 119c87742abSCrt Mori regmap_reg_range(MLX90632_EE_VERSION, MLX90632_EE_Ka), 120c87742abSCrt Mori regmap_reg_range(MLX90632_EE_CTRL, MLX90632_EE_I2C_ADDR), 121c87742abSCrt Mori regmap_reg_range(MLX90632_EE_Ha, MLX90632_EE_Hb), 122c87742abSCrt Mori regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL), 123c87742abSCrt Mori regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS), 124c87742abSCrt Mori regmap_reg_range(MLX90632_RAM_1(0), 125c87742abSCrt Mori MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)), 126c87742abSCrt Mori }; 127c87742abSCrt Mori 128c87742abSCrt Mori static const struct regmap_access_table mlx90632_readable_regs_tbl = { 129c87742abSCrt Mori .yes_ranges = mlx90632_read_reg_range, 130c87742abSCrt Mori .n_yes_ranges = ARRAY_SIZE(mlx90632_read_reg_range), 131c87742abSCrt Mori }; 132c87742abSCrt Mori 133c87742abSCrt Mori static const struct regmap_range mlx90632_no_write_reg_range[] = { 134c87742abSCrt Mori regmap_reg_range(MLX90632_EE_VERSION, MLX90632_EE_Ka), 135c87742abSCrt Mori regmap_reg_range(MLX90632_RAM_1(0), 136c87742abSCrt Mori MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)), 137c87742abSCrt Mori }; 138c87742abSCrt Mori 139c87742abSCrt Mori static const struct regmap_access_table mlx90632_writeable_regs_tbl = { 140c87742abSCrt Mori .no_ranges = mlx90632_no_write_reg_range, 141c87742abSCrt Mori .n_no_ranges = ARRAY_SIZE(mlx90632_no_write_reg_range), 142c87742abSCrt Mori }; 143c87742abSCrt Mori 144c87742abSCrt Mori static const struct regmap_config mlx90632_regmap = { 145c87742abSCrt Mori .reg_bits = 16, 146c87742abSCrt Mori .val_bits = 16, 147c87742abSCrt Mori 148c87742abSCrt Mori .volatile_table = &mlx90632_volatile_regs_tbl, 149c87742abSCrt Mori .rd_table = &mlx90632_readable_regs_tbl, 150c87742abSCrt Mori .wr_table = &mlx90632_writeable_regs_tbl, 151c87742abSCrt Mori 1521c96a2f6SDavid Frey .use_single_read = true, 1531c96a2f6SDavid Frey .use_single_write = true, 154c87742abSCrt Mori .reg_format_endian = REGMAP_ENDIAN_BIG, 155c87742abSCrt Mori .val_format_endian = REGMAP_ENDIAN_BIG, 156c87742abSCrt Mori .cache_type = REGCACHE_RBTREE, 157c87742abSCrt Mori }; 158c87742abSCrt Mori 159c87742abSCrt Mori static s32 mlx90632_pwr_set_sleep_step(struct regmap *regmap) 160c87742abSCrt Mori { 161c87742abSCrt Mori return regmap_update_bits(regmap, MLX90632_REG_CONTROL, 162c87742abSCrt Mori MLX90632_CFG_PWR_MASK, 163c87742abSCrt Mori MLX90632_PWR_STATUS_SLEEP_STEP); 164c87742abSCrt Mori } 165c87742abSCrt Mori 166c87742abSCrt Mori static s32 mlx90632_pwr_continuous(struct regmap *regmap) 167c87742abSCrt Mori { 168c87742abSCrt Mori return regmap_update_bits(regmap, MLX90632_REG_CONTROL, 169c87742abSCrt Mori MLX90632_CFG_PWR_MASK, 170c87742abSCrt Mori MLX90632_PWR_STATUS_CONTINUOUS); 171c87742abSCrt Mori } 172c87742abSCrt Mori 173c87742abSCrt Mori /** 1747390192bSLee Jones * mlx90632_perform_measurement() - Trigger and retrieve current measurement cycle 1757390192bSLee Jones * @data: pointer to mlx90632_data object containing regmap information 176c87742abSCrt Mori * 177c87742abSCrt Mori * Perform a measurement and return latest measurement cycle position reported 178c87742abSCrt Mori * by sensor. This is a blocking function for 500ms, as that is default sensor 179c87742abSCrt Mori * refresh rate. 180c87742abSCrt Mori */ 181c87742abSCrt Mori static int mlx90632_perform_measurement(struct mlx90632_data *data) 182c87742abSCrt Mori { 183c87742abSCrt Mori unsigned int reg_status; 184037697ddSCrt Mori int ret; 185c87742abSCrt Mori 186c87742abSCrt Mori ret = regmap_update_bits(data->regmap, MLX90632_REG_STATUS, 187c87742abSCrt Mori MLX90632_STAT_DATA_RDY, 0); 188c87742abSCrt Mori if (ret < 0) 189c87742abSCrt Mori return ret; 190c87742abSCrt Mori 191037697ddSCrt Mori ret = regmap_read_poll_timeout(data->regmap, MLX90632_REG_STATUS, reg_status, 192037697ddSCrt Mori !(reg_status & MLX90632_STAT_DATA_RDY), 10000, 193037697ddSCrt Mori 100 * 10000); 194c87742abSCrt Mori 195037697ddSCrt Mori if (ret < 0) { 196c87742abSCrt Mori dev_err(&data->client->dev, "data not ready"); 197c87742abSCrt Mori return -ETIMEDOUT; 198c87742abSCrt Mori } 199c87742abSCrt Mori 200c87742abSCrt Mori return (reg_status & MLX90632_STAT_CYCLE_POS) >> 2; 201c87742abSCrt Mori } 202c87742abSCrt Mori 203c87742abSCrt Mori static int mlx90632_channel_new_select(int perform_ret, uint8_t *channel_new, 204c87742abSCrt Mori uint8_t *channel_old) 205c87742abSCrt Mori { 206c87742abSCrt Mori switch (perform_ret) { 207c87742abSCrt Mori case 1: 208c87742abSCrt Mori *channel_new = 1; 209c87742abSCrt Mori *channel_old = 2; 210c87742abSCrt Mori break; 211c87742abSCrt Mori case 2: 212c87742abSCrt Mori *channel_new = 2; 213c87742abSCrt Mori *channel_old = 1; 214c87742abSCrt Mori break; 215c87742abSCrt Mori default: 216c87742abSCrt Mori return -EINVAL; 217c87742abSCrt Mori } 218c87742abSCrt Mori 219c87742abSCrt Mori return 0; 220c87742abSCrt Mori } 221c87742abSCrt Mori 222c87742abSCrt Mori static int mlx90632_read_ambient_raw(struct regmap *regmap, 223c87742abSCrt Mori s16 *ambient_new_raw, s16 *ambient_old_raw) 224c87742abSCrt Mori { 225c87742abSCrt Mori int ret; 226c87742abSCrt Mori unsigned int read_tmp; 227c87742abSCrt Mori 228c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_3(1), &read_tmp); 229c87742abSCrt Mori if (ret < 0) 230c87742abSCrt Mori return ret; 231c87742abSCrt Mori *ambient_new_raw = (s16)read_tmp; 232c87742abSCrt Mori 233c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_3(2), &read_tmp); 234c87742abSCrt Mori if (ret < 0) 235c87742abSCrt Mori return ret; 236c87742abSCrt Mori *ambient_old_raw = (s16)read_tmp; 237c87742abSCrt Mori 238c87742abSCrt Mori return ret; 239c87742abSCrt Mori } 240c87742abSCrt Mori 241c87742abSCrt Mori static int mlx90632_read_object_raw(struct regmap *regmap, 242c87742abSCrt Mori int perform_measurement_ret, 243c87742abSCrt Mori s16 *object_new_raw, s16 *object_old_raw) 244c87742abSCrt Mori { 245c87742abSCrt Mori int ret; 246c87742abSCrt Mori unsigned int read_tmp; 247c87742abSCrt Mori s16 read; 248c87742abSCrt Mori u8 channel = 0; 249c87742abSCrt Mori u8 channel_old = 0; 250c87742abSCrt Mori 251c87742abSCrt Mori ret = mlx90632_channel_new_select(perform_measurement_ret, &channel, 252c87742abSCrt Mori &channel_old); 253c87742abSCrt Mori if (ret != 0) 254c87742abSCrt Mori return ret; 255c87742abSCrt Mori 256c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_2(channel), &read_tmp); 257c87742abSCrt Mori if (ret < 0) 258c87742abSCrt Mori return ret; 259c87742abSCrt Mori 260c87742abSCrt Mori read = (s16)read_tmp; 261c87742abSCrt Mori 262c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_1(channel), &read_tmp); 263c87742abSCrt Mori if (ret < 0) 264c87742abSCrt Mori return ret; 265c87742abSCrt Mori *object_new_raw = (read + (s16)read_tmp) / 2; 266c87742abSCrt Mori 267c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_2(channel_old), &read_tmp); 268c87742abSCrt Mori if (ret < 0) 269c87742abSCrt Mori return ret; 270c87742abSCrt Mori read = (s16)read_tmp; 271c87742abSCrt Mori 272c87742abSCrt Mori ret = regmap_read(regmap, MLX90632_RAM_1(channel_old), &read_tmp); 273c87742abSCrt Mori if (ret < 0) 274c87742abSCrt Mori return ret; 275c87742abSCrt Mori *object_old_raw = (read + (s16)read_tmp) / 2; 276c87742abSCrt Mori 277c87742abSCrt Mori return ret; 278c87742abSCrt Mori } 279c87742abSCrt Mori 280c87742abSCrt Mori static int mlx90632_read_all_channel(struct mlx90632_data *data, 281c87742abSCrt Mori s16 *ambient_new_raw, s16 *ambient_old_raw, 282c87742abSCrt Mori s16 *object_new_raw, s16 *object_old_raw) 283c87742abSCrt Mori { 284c87742abSCrt Mori s32 ret, measurement; 285c87742abSCrt Mori 286c87742abSCrt Mori mutex_lock(&data->lock); 287c87742abSCrt Mori measurement = mlx90632_perform_measurement(data); 288c87742abSCrt Mori if (measurement < 0) { 289c87742abSCrt Mori ret = measurement; 290c87742abSCrt Mori goto read_unlock; 291c87742abSCrt Mori } 292c87742abSCrt Mori ret = mlx90632_read_ambient_raw(data->regmap, ambient_new_raw, 293c87742abSCrt Mori ambient_old_raw); 294c87742abSCrt Mori if (ret < 0) 295c87742abSCrt Mori goto read_unlock; 296c87742abSCrt Mori 297c87742abSCrt Mori ret = mlx90632_read_object_raw(data->regmap, measurement, 298c87742abSCrt Mori object_new_raw, object_old_raw); 299c87742abSCrt Mori read_unlock: 300c87742abSCrt Mori mutex_unlock(&data->lock); 301c87742abSCrt Mori return ret; 302c87742abSCrt Mori } 303c87742abSCrt Mori 304c87742abSCrt Mori static int mlx90632_read_ee_register(struct regmap *regmap, u16 reg_lsb, 305c87742abSCrt Mori s32 *reg_value) 306c87742abSCrt Mori { 307c87742abSCrt Mori s32 ret; 308c87742abSCrt Mori unsigned int read; 309c87742abSCrt Mori u32 value; 310c87742abSCrt Mori 311c87742abSCrt Mori ret = regmap_read(regmap, reg_lsb, &read); 312c87742abSCrt Mori if (ret < 0) 313c87742abSCrt Mori return ret; 314c87742abSCrt Mori 315c87742abSCrt Mori value = read; 316c87742abSCrt Mori 317c87742abSCrt Mori ret = regmap_read(regmap, reg_lsb + 1, &read); 318c87742abSCrt Mori if (ret < 0) 319c87742abSCrt Mori return ret; 320c87742abSCrt Mori 321c87742abSCrt Mori *reg_value = (read << 16) | (value & 0xffff); 322c87742abSCrt Mori 323c87742abSCrt Mori return 0; 324c87742abSCrt Mori } 325c87742abSCrt Mori 326c87742abSCrt Mori static s64 mlx90632_preprocess_temp_amb(s16 ambient_new_raw, 327c87742abSCrt Mori s16 ambient_old_raw, s16 Gb) 328c87742abSCrt Mori { 329c87742abSCrt Mori s64 VR_Ta, kGb, tmp; 330c87742abSCrt Mori 331c87742abSCrt Mori kGb = ((s64)Gb * 1000LL) >> 10ULL; 332c87742abSCrt Mori VR_Ta = (s64)ambient_old_raw * 1000000LL + 333c87742abSCrt Mori kGb * div64_s64(((s64)ambient_new_raw * 1000LL), 334c87742abSCrt Mori (MLX90632_REF_3)); 335c87742abSCrt Mori tmp = div64_s64( 336c87742abSCrt Mori div64_s64(((s64)ambient_new_raw * 1000000000000LL), 337c87742abSCrt Mori (MLX90632_REF_3)), VR_Ta); 338c87742abSCrt Mori return div64_s64(tmp << 19ULL, 1000LL); 339c87742abSCrt Mori } 340c87742abSCrt Mori 341c87742abSCrt Mori static s64 mlx90632_preprocess_temp_obj(s16 object_new_raw, s16 object_old_raw, 342c87742abSCrt Mori s16 ambient_new_raw, 343c87742abSCrt Mori s16 ambient_old_raw, s16 Ka) 344c87742abSCrt Mori { 345c87742abSCrt Mori s64 VR_IR, kKa, tmp; 346c87742abSCrt Mori 347c87742abSCrt Mori kKa = ((s64)Ka * 1000LL) >> 10ULL; 348c87742abSCrt Mori VR_IR = (s64)ambient_old_raw * 1000000LL + 349c87742abSCrt Mori kKa * div64_s64(((s64)ambient_new_raw * 1000LL), 350c87742abSCrt Mori (MLX90632_REF_3)); 351c87742abSCrt Mori tmp = div64_s64( 352c87742abSCrt Mori div64_s64(((s64)((object_new_raw + object_old_raw) / 2) 353c87742abSCrt Mori * 1000000000000LL), (MLX90632_REF_12)), 354c87742abSCrt Mori VR_IR); 355c87742abSCrt Mori return div64_s64((tmp << 19ULL), 1000LL); 356c87742abSCrt Mori } 357c87742abSCrt Mori 358c87742abSCrt Mori static s32 mlx90632_calc_temp_ambient(s16 ambient_new_raw, s16 ambient_old_raw, 359c87742abSCrt Mori s32 P_T, s32 P_R, s32 P_G, s32 P_O, 360c87742abSCrt Mori s16 Gb) 361c87742abSCrt Mori { 362c87742abSCrt Mori s64 Asub, Bsub, Ablock, Bblock, Cblock, AMB, sum; 363c87742abSCrt Mori 364c87742abSCrt Mori AMB = mlx90632_preprocess_temp_amb(ambient_new_raw, ambient_old_raw, 365c87742abSCrt Mori Gb); 366c87742abSCrt Mori Asub = ((s64)P_T * 10000000000LL) >> 44ULL; 367c87742abSCrt Mori Bsub = AMB - (((s64)P_R * 1000LL) >> 8ULL); 368c87742abSCrt Mori Ablock = Asub * (Bsub * Bsub); 369c87742abSCrt Mori Bblock = (div64_s64(Bsub * 10000000LL, P_G)) << 20ULL; 370c87742abSCrt Mori Cblock = ((s64)P_O * 10000000000LL) >> 8ULL; 371c87742abSCrt Mori 372c87742abSCrt Mori sum = div64_s64(Ablock, 1000000LL) + Bblock + Cblock; 373c87742abSCrt Mori 374c87742abSCrt Mori return div64_s64(sum, 10000000LL); 375c87742abSCrt Mori } 376c87742abSCrt Mori 377c87742abSCrt Mori static s32 mlx90632_calc_temp_object_iteration(s32 prev_object_temp, s64 object, 378b99095e5SCrt Mori s64 TAdut, s64 TAdut4, s32 Fa, s32 Fb, 379c87742abSCrt Mori s32 Ga, s16 Ha, s16 Hb, 380c87742abSCrt Mori u16 emissivity) 381c87742abSCrt Mori { 382b99095e5SCrt Mori s64 calcedKsTO, calcedKsTA, ir_Alpha, Alpha_corr; 383c87742abSCrt Mori s64 Ha_customer, Hb_customer; 384c87742abSCrt Mori 385c87742abSCrt Mori Ha_customer = ((s64)Ha * 1000000LL) >> 14ULL; 386c87742abSCrt Mori Hb_customer = ((s64)Hb * 100) >> 10ULL; 387c87742abSCrt Mori 388c87742abSCrt Mori calcedKsTO = ((s64)((s64)Ga * (prev_object_temp - 25 * 1000LL) 389c87742abSCrt Mori * 1000LL)) >> 36LL; 390c87742abSCrt Mori calcedKsTA = ((s64)(Fb * (TAdut - 25 * 1000000LL))) >> 36LL; 391c87742abSCrt Mori Alpha_corr = div64_s64((((s64)(Fa * 10000000000LL) >> 46LL) 392c87742abSCrt Mori * Ha_customer), 1000LL); 393c87742abSCrt Mori Alpha_corr *= ((s64)(1 * 1000000LL + calcedKsTO + calcedKsTA)); 394c87742abSCrt Mori Alpha_corr = emissivity * div64_s64(Alpha_corr, 100000LL); 395c87742abSCrt Mori Alpha_corr = div64_s64(Alpha_corr, 1000LL); 396c87742abSCrt Mori ir_Alpha = div64_s64((s64)object * 10000000LL, Alpha_corr); 397c87742abSCrt Mori 398c87742abSCrt Mori return (int_sqrt64(int_sqrt64(ir_Alpha * 1000000000000LL + TAdut4)) 399c87742abSCrt Mori - 27315 - Hb_customer) * 10; 400c87742abSCrt Mori } 401c87742abSCrt Mori 402b99095e5SCrt Mori static s64 mlx90632_calc_ta4(s64 TAdut, s64 scale) 403b99095e5SCrt Mori { 404b99095e5SCrt Mori return (div64_s64(TAdut, scale) + 27315) * 405b99095e5SCrt Mori (div64_s64(TAdut, scale) + 27315) * 406b99095e5SCrt Mori (div64_s64(TAdut, scale) + 27315) * 407b99095e5SCrt Mori (div64_s64(TAdut, scale) + 27315); 408b99095e5SCrt Mori } 409b99095e5SCrt Mori 410c87742abSCrt Mori static s32 mlx90632_calc_temp_object(s64 object, s64 ambient, s32 Ea, s32 Eb, 411c87742abSCrt Mori s32 Fa, s32 Fb, s32 Ga, s16 Ha, s16 Hb, 412c87742abSCrt Mori u16 tmp_emi) 413c87742abSCrt Mori { 414b99095e5SCrt Mori s64 kTA, kTA0, TAdut, TAdut4; 415c87742abSCrt Mori s64 temp = 25000; 416c87742abSCrt Mori s8 i; 417c87742abSCrt Mori 418c87742abSCrt Mori kTA = (Ea * 1000LL) >> 16LL; 419c87742abSCrt Mori kTA0 = (Eb * 1000LL) >> 8LL; 420c87742abSCrt Mori TAdut = div64_s64(((ambient - kTA0) * 1000000LL), kTA) + 25 * 1000000LL; 421b99095e5SCrt Mori TAdut4 = mlx90632_calc_ta4(TAdut, 10000LL); 422c87742abSCrt Mori 423c87742abSCrt Mori /* Iterations of calculation as described in datasheet */ 424c87742abSCrt Mori for (i = 0; i < 5; ++i) { 425b99095e5SCrt Mori temp = mlx90632_calc_temp_object_iteration(temp, object, TAdut, TAdut4, 426c87742abSCrt Mori Fa, Fb, Ga, Ha, Hb, 427c87742abSCrt Mori tmp_emi); 428c87742abSCrt Mori } 429c87742abSCrt Mori return temp; 430c87742abSCrt Mori } 431c87742abSCrt Mori 432c87742abSCrt Mori static int mlx90632_calc_object_dsp105(struct mlx90632_data *data, int *val) 433c87742abSCrt Mori { 434c87742abSCrt Mori s32 ret; 435c87742abSCrt Mori s32 Ea, Eb, Fa, Fb, Ga; 436c87742abSCrt Mori unsigned int read_tmp; 437c87742abSCrt Mori s16 Ha, Hb, Gb, Ka; 438c87742abSCrt Mori s16 ambient_new_raw, ambient_old_raw, object_new_raw, object_old_raw; 439c87742abSCrt Mori s64 object, ambient; 440c87742abSCrt Mori 441c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Ea, &Ea); 442c87742abSCrt Mori if (ret < 0) 443c87742abSCrt Mori return ret; 444c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Eb, &Eb); 445c87742abSCrt Mori if (ret < 0) 446c87742abSCrt Mori return ret; 447c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Fa, &Fa); 448c87742abSCrt Mori if (ret < 0) 449c87742abSCrt Mori return ret; 450c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Fb, &Fb); 451c87742abSCrt Mori if (ret < 0) 452c87742abSCrt Mori return ret; 453c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_Ga, &Ga); 454c87742abSCrt Mori if (ret < 0) 455c87742abSCrt Mori return ret; 456c87742abSCrt Mori ret = regmap_read(data->regmap, MLX90632_EE_Ha, &read_tmp); 457c87742abSCrt Mori if (ret < 0) 458c87742abSCrt Mori return ret; 459c87742abSCrt Mori Ha = (s16)read_tmp; 460c87742abSCrt Mori ret = regmap_read(data->regmap, MLX90632_EE_Hb, &read_tmp); 461c87742abSCrt Mori if (ret < 0) 462c87742abSCrt Mori return ret; 463c87742abSCrt Mori Hb = (s16)read_tmp; 464c87742abSCrt Mori ret = regmap_read(data->regmap, MLX90632_EE_Gb, &read_tmp); 465c87742abSCrt Mori if (ret < 0) 466c87742abSCrt Mori return ret; 467c87742abSCrt Mori Gb = (s16)read_tmp; 468c87742abSCrt Mori ret = regmap_read(data->regmap, MLX90632_EE_Ka, &read_tmp); 469c87742abSCrt Mori if (ret < 0) 470c87742abSCrt Mori return ret; 471c87742abSCrt Mori Ka = (s16)read_tmp; 472c87742abSCrt Mori 473c87742abSCrt Mori ret = mlx90632_read_all_channel(data, 474c87742abSCrt Mori &ambient_new_raw, &ambient_old_raw, 475c87742abSCrt Mori &object_new_raw, &object_old_raw); 476c87742abSCrt Mori if (ret < 0) 477c87742abSCrt Mori return ret; 478c87742abSCrt Mori 479c87742abSCrt Mori ambient = mlx90632_preprocess_temp_amb(ambient_new_raw, 480c87742abSCrt Mori ambient_old_raw, Gb); 481c87742abSCrt Mori object = mlx90632_preprocess_temp_obj(object_new_raw, 482c87742abSCrt Mori object_old_raw, 483c87742abSCrt Mori ambient_new_raw, 484c87742abSCrt Mori ambient_old_raw, Ka); 485c87742abSCrt Mori 486c87742abSCrt Mori *val = mlx90632_calc_temp_object(object, ambient, Ea, Eb, Fa, Fb, Ga, 487c87742abSCrt Mori Ha, Hb, data->emissivity); 488c87742abSCrt Mori return 0; 489c87742abSCrt Mori } 490c87742abSCrt Mori 491c87742abSCrt Mori static int mlx90632_calc_ambient_dsp105(struct mlx90632_data *data, int *val) 492c87742abSCrt Mori { 493c87742abSCrt Mori s32 ret; 494c87742abSCrt Mori unsigned int read_tmp; 495c87742abSCrt Mori s32 PT, PR, PG, PO; 496c87742abSCrt Mori s16 Gb; 497c87742abSCrt Mori s16 ambient_new_raw, ambient_old_raw; 498c87742abSCrt Mori 499c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_R, &PR); 500c87742abSCrt Mori if (ret < 0) 501c87742abSCrt Mori return ret; 502c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_G, &PG); 503c87742abSCrt Mori if (ret < 0) 504c87742abSCrt Mori return ret; 505c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_T, &PT); 506c87742abSCrt Mori if (ret < 0) 507c87742abSCrt Mori return ret; 508c87742abSCrt Mori ret = mlx90632_read_ee_register(data->regmap, MLX90632_EE_P_O, &PO); 509c87742abSCrt Mori if (ret < 0) 510c87742abSCrt Mori return ret; 511c87742abSCrt Mori ret = regmap_read(data->regmap, MLX90632_EE_Gb, &read_tmp); 512c87742abSCrt Mori if (ret < 0) 513c87742abSCrt Mori return ret; 514c87742abSCrt Mori Gb = (s16)read_tmp; 515c87742abSCrt Mori 516c87742abSCrt Mori ret = mlx90632_read_ambient_raw(data->regmap, &ambient_new_raw, 517c87742abSCrt Mori &ambient_old_raw); 518c50fadefSDan Carpenter if (ret < 0) 519c50fadefSDan Carpenter return ret; 520c87742abSCrt Mori *val = mlx90632_calc_temp_ambient(ambient_new_raw, ambient_old_raw, 521c87742abSCrt Mori PT, PR, PG, PO, Gb); 522c87742abSCrt Mori return ret; 523c87742abSCrt Mori } 524c87742abSCrt Mori 525c87742abSCrt Mori static int mlx90632_read_raw(struct iio_dev *indio_dev, 526c87742abSCrt Mori struct iio_chan_spec const *channel, int *val, 527c87742abSCrt Mori int *val2, long mask) 528c87742abSCrt Mori { 529c87742abSCrt Mori struct mlx90632_data *data = iio_priv(indio_dev); 530c87742abSCrt Mori int ret; 531c87742abSCrt Mori 532c87742abSCrt Mori switch (mask) { 533c87742abSCrt Mori case IIO_CHAN_INFO_PROCESSED: 534c87742abSCrt Mori switch (channel->channel2) { 535c87742abSCrt Mori case IIO_MOD_TEMP_AMBIENT: 536c87742abSCrt Mori ret = mlx90632_calc_ambient_dsp105(data, val); 537c87742abSCrt Mori if (ret < 0) 538c87742abSCrt Mori return ret; 539c87742abSCrt Mori return IIO_VAL_INT; 540c87742abSCrt Mori case IIO_MOD_TEMP_OBJECT: 541c87742abSCrt Mori ret = mlx90632_calc_object_dsp105(data, val); 542c87742abSCrt Mori if (ret < 0) 543c87742abSCrt Mori return ret; 544c87742abSCrt Mori return IIO_VAL_INT; 545c87742abSCrt Mori default: 546c87742abSCrt Mori return -EINVAL; 547c87742abSCrt Mori } 548c87742abSCrt Mori case IIO_CHAN_INFO_CALIBEMISSIVITY: 549c87742abSCrt Mori if (data->emissivity == 1000) { 550c87742abSCrt Mori *val = 1; 551c87742abSCrt Mori *val2 = 0; 552c87742abSCrt Mori } else { 553c87742abSCrt Mori *val = 0; 554c87742abSCrt Mori *val2 = data->emissivity * 1000; 555c87742abSCrt Mori } 556c87742abSCrt Mori return IIO_VAL_INT_PLUS_MICRO; 557c87742abSCrt Mori 558c87742abSCrt Mori default: 559c87742abSCrt Mori return -EINVAL; 560c87742abSCrt Mori } 561c87742abSCrt Mori } 562c87742abSCrt Mori 563c87742abSCrt Mori static int mlx90632_write_raw(struct iio_dev *indio_dev, 564c87742abSCrt Mori struct iio_chan_spec const *channel, int val, 565c87742abSCrt Mori int val2, long mask) 566c87742abSCrt Mori { 567c87742abSCrt Mori struct mlx90632_data *data = iio_priv(indio_dev); 568c87742abSCrt Mori 569c87742abSCrt Mori switch (mask) { 570c87742abSCrt Mori case IIO_CHAN_INFO_CALIBEMISSIVITY: 571c87742abSCrt Mori /* Confirm we are within 0 and 1.0 */ 572c87742abSCrt Mori if (val < 0 || val2 < 0 || val > 1 || 573c87742abSCrt Mori (val == 1 && val2 != 0)) 574c87742abSCrt Mori return -EINVAL; 575c87742abSCrt Mori data->emissivity = val * 1000 + val2 / 1000; 576c87742abSCrt Mori return 0; 577c87742abSCrt Mori default: 578c87742abSCrt Mori return -EINVAL; 579c87742abSCrt Mori } 580c87742abSCrt Mori } 581c87742abSCrt Mori 582c87742abSCrt Mori static const struct iio_chan_spec mlx90632_channels[] = { 583c87742abSCrt Mori { 584c87742abSCrt Mori .type = IIO_TEMP, 585c87742abSCrt Mori .modified = 1, 586c87742abSCrt Mori .channel2 = IIO_MOD_TEMP_AMBIENT, 587c87742abSCrt Mori .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), 588c87742abSCrt Mori }, 589c87742abSCrt Mori { 590c87742abSCrt Mori .type = IIO_TEMP, 591c87742abSCrt Mori .modified = 1, 592c87742abSCrt Mori .channel2 = IIO_MOD_TEMP_OBJECT, 593c87742abSCrt Mori .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | 594c87742abSCrt Mori BIT(IIO_CHAN_INFO_CALIBEMISSIVITY), 595c87742abSCrt Mori }, 596c87742abSCrt Mori }; 597c87742abSCrt Mori 598c87742abSCrt Mori static const struct iio_info mlx90632_info = { 599c87742abSCrt Mori .read_raw = mlx90632_read_raw, 600c87742abSCrt Mori .write_raw = mlx90632_write_raw, 601c87742abSCrt Mori }; 602c87742abSCrt Mori 603c87742abSCrt Mori static int mlx90632_sleep(struct mlx90632_data *data) 604c87742abSCrt Mori { 605c87742abSCrt Mori regcache_mark_dirty(data->regmap); 606c87742abSCrt Mori 607c87742abSCrt Mori dev_dbg(&data->client->dev, "Requesting sleep"); 608c87742abSCrt Mori return mlx90632_pwr_set_sleep_step(data->regmap); 609c87742abSCrt Mori } 610c87742abSCrt Mori 611c87742abSCrt Mori static int mlx90632_wakeup(struct mlx90632_data *data) 612c87742abSCrt Mori { 613c87742abSCrt Mori int ret; 614c87742abSCrt Mori 615c87742abSCrt Mori ret = regcache_sync(data->regmap); 616c87742abSCrt Mori if (ret < 0) { 617c87742abSCrt Mori dev_err(&data->client->dev, 618c87742abSCrt Mori "Failed to sync regmap registers: %d\n", ret); 619c87742abSCrt Mori return ret; 620c87742abSCrt Mori } 621c87742abSCrt Mori 622c87742abSCrt Mori dev_dbg(&data->client->dev, "Requesting wake-up\n"); 623c87742abSCrt Mori return mlx90632_pwr_continuous(data->regmap); 624c87742abSCrt Mori } 625c87742abSCrt Mori 626c87742abSCrt Mori static int mlx90632_probe(struct i2c_client *client, 627c87742abSCrt Mori const struct i2c_device_id *id) 628c87742abSCrt Mori { 629c87742abSCrt Mori struct iio_dev *indio_dev; 630c87742abSCrt Mori struct mlx90632_data *mlx90632; 631c87742abSCrt Mori struct regmap *regmap; 632c87742abSCrt Mori int ret; 633c87742abSCrt Mori unsigned int read; 634c87742abSCrt Mori 635c87742abSCrt Mori indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*mlx90632)); 636c87742abSCrt Mori if (!indio_dev) { 637c87742abSCrt Mori dev_err(&client->dev, "Failed to allocate device\n"); 638c87742abSCrt Mori return -ENOMEM; 639c87742abSCrt Mori } 640c87742abSCrt Mori 641c87742abSCrt Mori regmap = devm_regmap_init_i2c(client, &mlx90632_regmap); 642c87742abSCrt Mori if (IS_ERR(regmap)) { 643c87742abSCrt Mori ret = PTR_ERR(regmap); 644c87742abSCrt Mori dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret); 645c87742abSCrt Mori return ret; 646c87742abSCrt Mori } 647c87742abSCrt Mori 648c87742abSCrt Mori mlx90632 = iio_priv(indio_dev); 649c87742abSCrt Mori i2c_set_clientdata(client, indio_dev); 650c87742abSCrt Mori mlx90632->client = client; 651c87742abSCrt Mori mlx90632->regmap = regmap; 652c87742abSCrt Mori 653c87742abSCrt Mori mutex_init(&mlx90632->lock); 654c87742abSCrt Mori indio_dev->name = id->name; 655c87742abSCrt Mori indio_dev->modes = INDIO_DIRECT_MODE; 656c87742abSCrt Mori indio_dev->info = &mlx90632_info; 657c87742abSCrt Mori indio_dev->channels = mlx90632_channels; 658c87742abSCrt Mori indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels); 659c87742abSCrt Mori 660c87742abSCrt Mori ret = mlx90632_wakeup(mlx90632); 661c87742abSCrt Mori if (ret < 0) { 662c87742abSCrt Mori dev_err(&client->dev, "Wakeup failed: %d\n", ret); 663c87742abSCrt Mori return ret; 664c87742abSCrt Mori } 665c87742abSCrt Mori 666c87742abSCrt Mori ret = regmap_read(mlx90632->regmap, MLX90632_EE_VERSION, &read); 667c87742abSCrt Mori if (ret < 0) { 668c87742abSCrt Mori dev_err(&client->dev, "read of version failed: %d\n", ret); 669c87742abSCrt Mori return ret; 670c87742abSCrt Mori } 671c87742abSCrt Mori if (read == MLX90632_ID_MEDICAL) { 672c87742abSCrt Mori dev_dbg(&client->dev, 673c87742abSCrt Mori "Detected Medical EEPROM calibration %x\n", read); 674c87742abSCrt Mori } else if (read == MLX90632_ID_CONSUMER) { 675c87742abSCrt Mori dev_dbg(&client->dev, 676c87742abSCrt Mori "Detected Consumer EEPROM calibration %x\n", read); 677389fc70bSCrt Mori } else if ((read & MLX90632_DSP_MASK) == MLX90632_DSP_VERSION) { 678389fc70bSCrt Mori dev_dbg(&client->dev, 679389fc70bSCrt Mori "Detected Unknown EEPROM calibration %x\n", read); 680c87742abSCrt Mori } else { 681c87742abSCrt Mori dev_err(&client->dev, 682389fc70bSCrt Mori "Wrong DSP version %x (expected %x)\n", 683389fc70bSCrt Mori read, MLX90632_DSP_VERSION); 684c87742abSCrt Mori return -EPROTONOSUPPORT; 685c87742abSCrt Mori } 686c87742abSCrt Mori 687c87742abSCrt Mori mlx90632->emissivity = 1000; 688c87742abSCrt Mori 689c87742abSCrt Mori pm_runtime_disable(&client->dev); 690c87742abSCrt Mori ret = pm_runtime_set_active(&client->dev); 691c87742abSCrt Mori if (ret < 0) { 692c87742abSCrt Mori mlx90632_sleep(mlx90632); 693c87742abSCrt Mori return ret; 694c87742abSCrt Mori } 695c87742abSCrt Mori pm_runtime_enable(&client->dev); 696c87742abSCrt Mori pm_runtime_set_autosuspend_delay(&client->dev, MLX90632_SLEEP_DELAY_MS); 697c87742abSCrt Mori pm_runtime_use_autosuspend(&client->dev); 698c87742abSCrt Mori 699c87742abSCrt Mori return iio_device_register(indio_dev); 700c87742abSCrt Mori } 701c87742abSCrt Mori 702c87742abSCrt Mori static int mlx90632_remove(struct i2c_client *client) 703c87742abSCrt Mori { 704c87742abSCrt Mori struct iio_dev *indio_dev = i2c_get_clientdata(client); 705c87742abSCrt Mori struct mlx90632_data *data = iio_priv(indio_dev); 706c87742abSCrt Mori 707c87742abSCrt Mori iio_device_unregister(indio_dev); 708c87742abSCrt Mori 709c87742abSCrt Mori pm_runtime_disable(&client->dev); 710c87742abSCrt Mori pm_runtime_set_suspended(&client->dev); 711c87742abSCrt Mori pm_runtime_put_noidle(&client->dev); 712c87742abSCrt Mori 713c87742abSCrt Mori mlx90632_sleep(data); 714c87742abSCrt Mori 715c87742abSCrt Mori return 0; 716c87742abSCrt Mori } 717c87742abSCrt Mori 718c87742abSCrt Mori static const struct i2c_device_id mlx90632_id[] = { 719c87742abSCrt Mori { "mlx90632", 0 }, 720c87742abSCrt Mori { } 721c87742abSCrt Mori }; 722c87742abSCrt Mori MODULE_DEVICE_TABLE(i2c, mlx90632_id); 723c87742abSCrt Mori 724c87742abSCrt Mori static const struct of_device_id mlx90632_of_match[] = { 725c87742abSCrt Mori { .compatible = "melexis,mlx90632" }, 726c87742abSCrt Mori { } 727c87742abSCrt Mori }; 728c87742abSCrt Mori MODULE_DEVICE_TABLE(of, mlx90632_of_match); 729c87742abSCrt Mori 730c87742abSCrt Mori static int __maybe_unused mlx90632_pm_suspend(struct device *dev) 731c87742abSCrt Mori { 732c87742abSCrt Mori struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 733c87742abSCrt Mori struct mlx90632_data *data = iio_priv(indio_dev); 734c87742abSCrt Mori 735c87742abSCrt Mori return mlx90632_sleep(data); 736c87742abSCrt Mori } 737c87742abSCrt Mori 738c87742abSCrt Mori static int __maybe_unused mlx90632_pm_resume(struct device *dev) 739c87742abSCrt Mori { 740c87742abSCrt Mori struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 741c87742abSCrt Mori struct mlx90632_data *data = iio_priv(indio_dev); 742c87742abSCrt Mori 743c87742abSCrt Mori return mlx90632_wakeup(data); 744c87742abSCrt Mori } 745c87742abSCrt Mori 746c87742abSCrt Mori static UNIVERSAL_DEV_PM_OPS(mlx90632_pm_ops, mlx90632_pm_suspend, 747c87742abSCrt Mori mlx90632_pm_resume, NULL); 748c87742abSCrt Mori 749c87742abSCrt Mori static struct i2c_driver mlx90632_driver = { 750c87742abSCrt Mori .driver = { 751c87742abSCrt Mori .name = "mlx90632", 752c87742abSCrt Mori .of_match_table = mlx90632_of_match, 753c87742abSCrt Mori .pm = &mlx90632_pm_ops, 754c87742abSCrt Mori }, 755c87742abSCrt Mori .probe = mlx90632_probe, 756c87742abSCrt Mori .remove = mlx90632_remove, 757c87742abSCrt Mori .id_table = mlx90632_id, 758c87742abSCrt Mori }; 759c87742abSCrt Mori module_i2c_driver(mlx90632_driver); 760c87742abSCrt Mori 761c87742abSCrt Mori MODULE_AUTHOR("Crt Mori <cmo@melexis.com>"); 762c87742abSCrt Mori MODULE_DESCRIPTION("Melexis MLX90632 contactless Infra Red temperature sensor driver"); 763c87742abSCrt Mori MODULE_LICENSE("GPL v2"); 764