162a1efb9SPeter Meerwald /* 2*5a441aadSAngus Ainslie (Purism) * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient 3d978bfddSPeter Meerwald-Stadler * light and proximity sensor 462a1efb9SPeter Meerwald * 562a1efb9SPeter Meerwald * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net> 6*5a441aadSAngus Ainslie (Purism) * Copyright 2019 Pursim SPC 762a1efb9SPeter Meerwald * 862a1efb9SPeter Meerwald * This file is subject to the terms and conditions of version 2 of 962a1efb9SPeter Meerwald * the GNU General Public License. See the file COPYING in the main 1062a1efb9SPeter Meerwald * directory of this archive for more details. 1162a1efb9SPeter Meerwald * 12be38866fSTomas Novotny * IIO driver for: 13be38866fSTomas Novotny * VCNL4000/10/20 (7-bit I2C slave address 0x13) 14*5a441aadSAngus Ainslie (Purism) * VCNL4040 (7-bit I2C slave address 0x60) 15be38866fSTomas Novotny * VCNL4200 (7-bit I2C slave address 0x51) 1662a1efb9SPeter Meerwald * 1762a1efb9SPeter Meerwald * TODO: 1862a1efb9SPeter Meerwald * allow to adjust IR current 1962a1efb9SPeter Meerwald * proximity threshold and event handling 20d978bfddSPeter Meerwald-Stadler * periodic ALS/proximity measurement (VCNL4010/20) 21*5a441aadSAngus Ainslie (Purism) * interrupts (VCNL4010/20/40, VCNL4200) 2262a1efb9SPeter Meerwald */ 2362a1efb9SPeter Meerwald 2462a1efb9SPeter Meerwald #include <linux/module.h> 2562a1efb9SPeter Meerwald #include <linux/i2c.h> 2662a1efb9SPeter Meerwald #include <linux/err.h> 2762a1efb9SPeter Meerwald #include <linux/delay.h> 2862a1efb9SPeter Meerwald 2962a1efb9SPeter Meerwald #include <linux/iio/iio.h> 3062a1efb9SPeter Meerwald #include <linux/iio/sysfs.h> 3162a1efb9SPeter Meerwald 3262a1efb9SPeter Meerwald #define VCNL4000_DRV_NAME "vcnl4000" 331ebc787aSTomas Novotny #define VCNL4000_PROD_ID 0x01 341ebc787aSTomas Novotny #define VCNL4010_PROD_ID 0x02 /* for VCNL4020, VCNL4010 */ 35*5a441aadSAngus Ainslie (Purism) #define VCNL4040_PROD_ID 0x86 36be38866fSTomas Novotny #define VCNL4200_PROD_ID 0x58 3762a1efb9SPeter Meerwald 3862a1efb9SPeter Meerwald #define VCNL4000_COMMAND 0x80 /* Command register */ 3962a1efb9SPeter Meerwald #define VCNL4000_PROD_REV 0x81 /* Product ID and Revision ID */ 4062a1efb9SPeter Meerwald #define VCNL4000_LED_CURRENT 0x83 /* IR LED current for proximity mode */ 4162a1efb9SPeter Meerwald #define VCNL4000_AL_PARAM 0x84 /* Ambient light parameter register */ 4262a1efb9SPeter Meerwald #define VCNL4000_AL_RESULT_HI 0x85 /* Ambient light result register, MSB */ 4362a1efb9SPeter Meerwald #define VCNL4000_AL_RESULT_LO 0x86 /* Ambient light result register, LSB */ 4462a1efb9SPeter Meerwald #define VCNL4000_PS_RESULT_HI 0x87 /* Proximity result register, MSB */ 4562a1efb9SPeter Meerwald #define VCNL4000_PS_RESULT_LO 0x88 /* Proximity result register, LSB */ 4662a1efb9SPeter Meerwald #define VCNL4000_PS_MEAS_FREQ 0x89 /* Proximity test signal frequency */ 4762a1efb9SPeter Meerwald #define VCNL4000_PS_MOD_ADJ 0x8a /* Proximity modulator timing adjustment */ 4862a1efb9SPeter Meerwald 49be38866fSTomas Novotny #define VCNL4200_AL_CONF 0x00 /* Ambient light configuration */ 50be38866fSTomas Novotny #define VCNL4200_PS_CONF1 0x03 /* Proximity configuration */ 51be38866fSTomas Novotny #define VCNL4200_PS_DATA 0x08 /* Proximity data */ 52be38866fSTomas Novotny #define VCNL4200_AL_DATA 0x09 /* Ambient light data */ 53be38866fSTomas Novotny #define VCNL4200_DEV_ID 0x0e /* Device ID, slave address and version */ 54be38866fSTomas Novotny 55*5a441aadSAngus Ainslie (Purism) #define VCNL4040_DEV_ID 0x0c /* Device ID and version */ 56*5a441aadSAngus Ainslie (Purism) 5762a1efb9SPeter Meerwald /* Bit masks for COMMAND register */ 58ff6a5259SPeter Meerwald-Stadler #define VCNL4000_AL_RDY BIT(6) /* ALS data ready? */ 59ff6a5259SPeter Meerwald-Stadler #define VCNL4000_PS_RDY BIT(5) /* proximity data ready? */ 60ff6a5259SPeter Meerwald-Stadler #define VCNL4000_AL_OD BIT(4) /* start on-demand ALS measurement */ 61ff6a5259SPeter Meerwald-Stadler #define VCNL4000_PS_OD BIT(3) /* start on-demand proximity measurement */ 6262a1efb9SPeter Meerwald 631ebc787aSTomas Novotny enum vcnl4000_device_ids { 641ebc787aSTomas Novotny VCNL4000, 6550c50b97STomas Novotny VCNL4010, 66*5a441aadSAngus Ainslie (Purism) VCNL4040, 67be38866fSTomas Novotny VCNL4200, 68be38866fSTomas Novotny }; 69be38866fSTomas Novotny 70be38866fSTomas Novotny struct vcnl4200_channel { 71be38866fSTomas Novotny u8 reg; 72be38866fSTomas Novotny ktime_t last_measurement; 73be38866fSTomas Novotny ktime_t sampling_rate; 74be38866fSTomas Novotny struct mutex lock; 751ebc787aSTomas Novotny }; 761ebc787aSTomas Novotny 7762a1efb9SPeter Meerwald struct vcnl4000_data { 7862a1efb9SPeter Meerwald struct i2c_client *client; 791ebc787aSTomas Novotny enum vcnl4000_device_ids id; 801ebc787aSTomas Novotny int rev; 811ebc787aSTomas Novotny int al_scale; 821ebc787aSTomas Novotny const struct vcnl4000_chip_spec *chip_spec; 83be38866fSTomas Novotny struct mutex vcnl4000_lock; 84be38866fSTomas Novotny struct vcnl4200_channel vcnl4200_al; 85be38866fSTomas Novotny struct vcnl4200_channel vcnl4200_ps; 8662a1efb9SPeter Meerwald }; 8762a1efb9SPeter Meerwald 881ebc787aSTomas Novotny struct vcnl4000_chip_spec { 891ebc787aSTomas Novotny const char *prod; 901ebc787aSTomas Novotny int (*init)(struct vcnl4000_data *data); 911ebc787aSTomas Novotny int (*measure_light)(struct vcnl4000_data *data, int *val); 921ebc787aSTomas Novotny int (*measure_proximity)(struct vcnl4000_data *data, int *val); 931ebc787aSTomas Novotny }; 941ebc787aSTomas Novotny 9562a1efb9SPeter Meerwald static const struct i2c_device_id vcnl4000_id[] = { 961ebc787aSTomas Novotny { "vcnl4000", VCNL4000 }, 9750c50b97STomas Novotny { "vcnl4010", VCNL4010 }, 9850c50b97STomas Novotny { "vcnl4020", VCNL4010 }, 99*5a441aadSAngus Ainslie (Purism) { "vcnl4040", VCNL4040 }, 100be38866fSTomas Novotny { "vcnl4200", VCNL4200 }, 10162a1efb9SPeter Meerwald { } 10262a1efb9SPeter Meerwald }; 10362a1efb9SPeter Meerwald MODULE_DEVICE_TABLE(i2c, vcnl4000_id); 10462a1efb9SPeter Meerwald 1051ebc787aSTomas Novotny static int vcnl4000_init(struct vcnl4000_data *data) 1061ebc787aSTomas Novotny { 1071ebc787aSTomas Novotny int ret, prod_id; 1081ebc787aSTomas Novotny 1091ebc787aSTomas Novotny ret = i2c_smbus_read_byte_data(data->client, VCNL4000_PROD_REV); 1101ebc787aSTomas Novotny if (ret < 0) 1111ebc787aSTomas Novotny return ret; 1121ebc787aSTomas Novotny 1131ebc787aSTomas Novotny prod_id = ret >> 4; 11458bf9aceSTomas Novotny switch (prod_id) { 11558bf9aceSTomas Novotny case VCNL4000_PROD_ID: 11658bf9aceSTomas Novotny if (data->id != VCNL4000) 11758bf9aceSTomas Novotny dev_warn(&data->client->dev, 11858bf9aceSTomas Novotny "wrong device id, use vcnl4000"); 11958bf9aceSTomas Novotny break; 12058bf9aceSTomas Novotny case VCNL4010_PROD_ID: 12158bf9aceSTomas Novotny if (data->id != VCNL4010) 12258bf9aceSTomas Novotny dev_warn(&data->client->dev, 12358bf9aceSTomas Novotny "wrong device id, use vcnl4010/4020"); 12458bf9aceSTomas Novotny break; 12558bf9aceSTomas Novotny default: 1261ebc787aSTomas Novotny return -ENODEV; 12758bf9aceSTomas Novotny } 1281ebc787aSTomas Novotny 1291ebc787aSTomas Novotny data->rev = ret & 0xf; 1301ebc787aSTomas Novotny data->al_scale = 250000; 131be38866fSTomas Novotny mutex_init(&data->vcnl4000_lock); 132be38866fSTomas Novotny 133be38866fSTomas Novotny return 0; 134be38866fSTomas Novotny }; 135be38866fSTomas Novotny 136be38866fSTomas Novotny static int vcnl4200_init(struct vcnl4000_data *data) 137be38866fSTomas Novotny { 138*5a441aadSAngus Ainslie (Purism) int ret, id; 139be38866fSTomas Novotny 140be38866fSTomas Novotny ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID); 141be38866fSTomas Novotny if (ret < 0) 142be38866fSTomas Novotny return ret; 143be38866fSTomas Novotny 144*5a441aadSAngus Ainslie (Purism) id = ret & 0xff; 145*5a441aadSAngus Ainslie (Purism) 146*5a441aadSAngus Ainslie (Purism) if (id != VCNL4200_PROD_ID) { 147*5a441aadSAngus Ainslie (Purism) ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID); 148*5a441aadSAngus Ainslie (Purism) if (ret < 0) 149*5a441aadSAngus Ainslie (Purism) return ret; 150*5a441aadSAngus Ainslie (Purism) 151*5a441aadSAngus Ainslie (Purism) id = ret & 0xff; 152*5a441aadSAngus Ainslie (Purism) 153*5a441aadSAngus Ainslie (Purism) if (id != VCNL4040_PROD_ID) 154be38866fSTomas Novotny return -ENODEV; 155*5a441aadSAngus Ainslie (Purism) } 156*5a441aadSAngus Ainslie (Purism) 157*5a441aadSAngus Ainslie (Purism) dev_dbg(&data->client->dev, "device id 0x%x", id); 158be38866fSTomas Novotny 159be38866fSTomas Novotny data->rev = (ret >> 8) & 0xf; 160be38866fSTomas Novotny 161be38866fSTomas Novotny /* Set defaults and enable both channels */ 16278ed050dSAngus Ainslie (Purism) ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0); 163be38866fSTomas Novotny if (ret < 0) 164be38866fSTomas Novotny return ret; 16578ed050dSAngus Ainslie (Purism) ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0); 166be38866fSTomas Novotny if (ret < 0) 167be38866fSTomas Novotny return ret; 168be38866fSTomas Novotny 169be38866fSTomas Novotny data->al_scale = 24000; 170be38866fSTomas Novotny data->vcnl4200_al.reg = VCNL4200_AL_DATA; 171be38866fSTomas Novotny data->vcnl4200_ps.reg = VCNL4200_PS_DATA; 172*5a441aadSAngus Ainslie (Purism) switch (id) { 173*5a441aadSAngus Ainslie (Purism) case VCNL4200_PROD_ID: 174*5a441aadSAngus Ainslie (Purism) /* Integration time is 50ms, but the experiments */ 175*5a441aadSAngus Ainslie (Purism) /* show 54ms in total. */ 176be38866fSTomas Novotny data->vcnl4200_al.sampling_rate = ktime_set(0, 54000 * 1000); 177be38866fSTomas Novotny data->vcnl4200_ps.sampling_rate = ktime_set(0, 4200 * 1000); 178*5a441aadSAngus Ainslie (Purism) break; 179*5a441aadSAngus Ainslie (Purism) case VCNL4040_PROD_ID: 180*5a441aadSAngus Ainslie (Purism) /* Integration time is 80ms, add 10ms. */ 181*5a441aadSAngus Ainslie (Purism) data->vcnl4200_al.sampling_rate = ktime_set(0, 100000 * 1000); 182*5a441aadSAngus Ainslie (Purism) data->vcnl4200_ps.sampling_rate = ktime_set(0, 100000 * 1000); 183*5a441aadSAngus Ainslie (Purism) break; 184*5a441aadSAngus Ainslie (Purism) } 185be38866fSTomas Novotny data->vcnl4200_al.last_measurement = ktime_set(0, 0); 186be38866fSTomas Novotny data->vcnl4200_ps.last_measurement = ktime_set(0, 0); 187be38866fSTomas Novotny mutex_init(&data->vcnl4200_al.lock); 188be38866fSTomas Novotny mutex_init(&data->vcnl4200_ps.lock); 1891ebc787aSTomas Novotny 1901ebc787aSTomas Novotny return 0; 1911ebc787aSTomas Novotny }; 1921ebc787aSTomas Novotny 19362a1efb9SPeter Meerwald static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask, 19462a1efb9SPeter Meerwald u8 rdy_mask, u8 data_reg, int *val) 19562a1efb9SPeter Meerwald { 19662a1efb9SPeter Meerwald int tries = 20; 19791f197e0SLars-Peter Clausen __be16 buf; 19862a1efb9SPeter Meerwald int ret; 19962a1efb9SPeter Meerwald 200be38866fSTomas Novotny mutex_lock(&data->vcnl4000_lock); 201ff34ed6dSPeter Meerwald-Stadler 20262a1efb9SPeter Meerwald ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 20362a1efb9SPeter Meerwald req_mask); 20462a1efb9SPeter Meerwald if (ret < 0) 205ff34ed6dSPeter Meerwald-Stadler goto fail; 20662a1efb9SPeter Meerwald 20762a1efb9SPeter Meerwald /* wait for data to become ready */ 20862a1efb9SPeter Meerwald while (tries--) { 20962a1efb9SPeter Meerwald ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND); 21062a1efb9SPeter Meerwald if (ret < 0) 211ff34ed6dSPeter Meerwald-Stadler goto fail; 21262a1efb9SPeter Meerwald if (ret & rdy_mask) 21362a1efb9SPeter Meerwald break; 21462a1efb9SPeter Meerwald msleep(20); /* measurement takes up to 100 ms */ 21562a1efb9SPeter Meerwald } 21662a1efb9SPeter Meerwald 21762a1efb9SPeter Meerwald if (tries < 0) { 21862a1efb9SPeter Meerwald dev_err(&data->client->dev, 21962a1efb9SPeter Meerwald "vcnl4000_measure() failed, data not ready\n"); 220ff34ed6dSPeter Meerwald-Stadler ret = -EIO; 221ff34ed6dSPeter Meerwald-Stadler goto fail; 22262a1efb9SPeter Meerwald } 22362a1efb9SPeter Meerwald 22462a1efb9SPeter Meerwald ret = i2c_smbus_read_i2c_block_data(data->client, 22562a1efb9SPeter Meerwald data_reg, sizeof(buf), (u8 *) &buf); 22662a1efb9SPeter Meerwald if (ret < 0) 227ff34ed6dSPeter Meerwald-Stadler goto fail; 22862a1efb9SPeter Meerwald 229be38866fSTomas Novotny mutex_unlock(&data->vcnl4000_lock); 23062a1efb9SPeter Meerwald *val = be16_to_cpu(buf); 23162a1efb9SPeter Meerwald 23262a1efb9SPeter Meerwald return 0; 233ff34ed6dSPeter Meerwald-Stadler 234ff34ed6dSPeter Meerwald-Stadler fail: 235be38866fSTomas Novotny mutex_unlock(&data->vcnl4000_lock); 236ff34ed6dSPeter Meerwald-Stadler return ret; 23762a1efb9SPeter Meerwald } 23862a1efb9SPeter Meerwald 239be38866fSTomas Novotny static int vcnl4200_measure(struct vcnl4000_data *data, 240be38866fSTomas Novotny struct vcnl4200_channel *chan, int *val) 241be38866fSTomas Novotny { 242be38866fSTomas Novotny int ret; 243be38866fSTomas Novotny s64 delta; 244be38866fSTomas Novotny ktime_t next_measurement; 245be38866fSTomas Novotny 246be38866fSTomas Novotny mutex_lock(&chan->lock); 247be38866fSTomas Novotny 248be38866fSTomas Novotny next_measurement = ktime_add(chan->last_measurement, 249be38866fSTomas Novotny chan->sampling_rate); 250be38866fSTomas Novotny delta = ktime_us_delta(next_measurement, ktime_get()); 251be38866fSTomas Novotny if (delta > 0) 252be38866fSTomas Novotny usleep_range(delta, delta + 500); 253be38866fSTomas Novotny chan->last_measurement = ktime_get(); 254be38866fSTomas Novotny 255be38866fSTomas Novotny mutex_unlock(&chan->lock); 256be38866fSTomas Novotny 257be38866fSTomas Novotny ret = i2c_smbus_read_word_data(data->client, chan->reg); 258be38866fSTomas Novotny if (ret < 0) 259be38866fSTomas Novotny return ret; 260be38866fSTomas Novotny 261be38866fSTomas Novotny *val = ret; 262be38866fSTomas Novotny 263be38866fSTomas Novotny return 0; 264be38866fSTomas Novotny } 265be38866fSTomas Novotny 2661ebc787aSTomas Novotny static int vcnl4000_measure_light(struct vcnl4000_data *data, int *val) 2671ebc787aSTomas Novotny { 2681ebc787aSTomas Novotny return vcnl4000_measure(data, 2691ebc787aSTomas Novotny VCNL4000_AL_OD, VCNL4000_AL_RDY, 2701ebc787aSTomas Novotny VCNL4000_AL_RESULT_HI, val); 2711ebc787aSTomas Novotny } 2721ebc787aSTomas Novotny 273be38866fSTomas Novotny static int vcnl4200_measure_light(struct vcnl4000_data *data, int *val) 274be38866fSTomas Novotny { 275be38866fSTomas Novotny return vcnl4200_measure(data, &data->vcnl4200_al, val); 276be38866fSTomas Novotny } 277be38866fSTomas Novotny 2781ebc787aSTomas Novotny static int vcnl4000_measure_proximity(struct vcnl4000_data *data, int *val) 2791ebc787aSTomas Novotny { 2801ebc787aSTomas Novotny return vcnl4000_measure(data, 2811ebc787aSTomas Novotny VCNL4000_PS_OD, VCNL4000_PS_RDY, 2821ebc787aSTomas Novotny VCNL4000_PS_RESULT_HI, val); 2831ebc787aSTomas Novotny } 2841ebc787aSTomas Novotny 285be38866fSTomas Novotny static int vcnl4200_measure_proximity(struct vcnl4000_data *data, int *val) 286be38866fSTomas Novotny { 287be38866fSTomas Novotny return vcnl4200_measure(data, &data->vcnl4200_ps, val); 288be38866fSTomas Novotny } 289be38866fSTomas Novotny 2901ebc787aSTomas Novotny static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = { 2911ebc787aSTomas Novotny [VCNL4000] = { 2921ebc787aSTomas Novotny .prod = "VCNL4000", 2931ebc787aSTomas Novotny .init = vcnl4000_init, 2941ebc787aSTomas Novotny .measure_light = vcnl4000_measure_light, 2951ebc787aSTomas Novotny .measure_proximity = vcnl4000_measure_proximity, 2961ebc787aSTomas Novotny }, 29750c50b97STomas Novotny [VCNL4010] = { 29850c50b97STomas Novotny .prod = "VCNL4010/4020", 29950c50b97STomas Novotny .init = vcnl4000_init, 30050c50b97STomas Novotny .measure_light = vcnl4000_measure_light, 30150c50b97STomas Novotny .measure_proximity = vcnl4000_measure_proximity, 30250c50b97STomas Novotny }, 303*5a441aadSAngus Ainslie (Purism) [VCNL4040] = { 304*5a441aadSAngus Ainslie (Purism) .prod = "VCNL4040", 305*5a441aadSAngus Ainslie (Purism) .init = vcnl4200_init, 306*5a441aadSAngus Ainslie (Purism) .measure_light = vcnl4200_measure_light, 307*5a441aadSAngus Ainslie (Purism) .measure_proximity = vcnl4200_measure_proximity, 308*5a441aadSAngus Ainslie (Purism) }, 309be38866fSTomas Novotny [VCNL4200] = { 310be38866fSTomas Novotny .prod = "VCNL4200", 311be38866fSTomas Novotny .init = vcnl4200_init, 312be38866fSTomas Novotny .measure_light = vcnl4200_measure_light, 313be38866fSTomas Novotny .measure_proximity = vcnl4200_measure_proximity, 314be38866fSTomas Novotny }, 3151ebc787aSTomas Novotny }; 3161ebc787aSTomas Novotny 31762a1efb9SPeter Meerwald static const struct iio_chan_spec vcnl4000_channels[] = { 31862a1efb9SPeter Meerwald { 31962a1efb9SPeter Meerwald .type = IIO_LIGHT, 320bb7c5940SJonathan Cameron .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | 321bb7c5940SJonathan Cameron BIT(IIO_CHAN_INFO_SCALE), 32262a1efb9SPeter Meerwald }, { 32362a1efb9SPeter Meerwald .type = IIO_PROXIMITY, 324bb7c5940SJonathan Cameron .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 32562a1efb9SPeter Meerwald } 32662a1efb9SPeter Meerwald }; 32762a1efb9SPeter Meerwald 32862a1efb9SPeter Meerwald static int vcnl4000_read_raw(struct iio_dev *indio_dev, 32962a1efb9SPeter Meerwald struct iio_chan_spec const *chan, 33062a1efb9SPeter Meerwald int *val, int *val2, long mask) 33162a1efb9SPeter Meerwald { 3325d693139SPeter Meerwald-Stadler int ret; 33362a1efb9SPeter Meerwald struct vcnl4000_data *data = iio_priv(indio_dev); 33462a1efb9SPeter Meerwald 33562a1efb9SPeter Meerwald switch (mask) { 33662a1efb9SPeter Meerwald case IIO_CHAN_INFO_RAW: 33762a1efb9SPeter Meerwald switch (chan->type) { 33862a1efb9SPeter Meerwald case IIO_LIGHT: 3391ebc787aSTomas Novotny ret = data->chip_spec->measure_light(data, val); 34062a1efb9SPeter Meerwald if (ret < 0) 34162a1efb9SPeter Meerwald return ret; 3425d693139SPeter Meerwald-Stadler return IIO_VAL_INT; 34362a1efb9SPeter Meerwald case IIO_PROXIMITY: 3441ebc787aSTomas Novotny ret = data->chip_spec->measure_proximity(data, val); 34562a1efb9SPeter Meerwald if (ret < 0) 34662a1efb9SPeter Meerwald return ret; 3475d693139SPeter Meerwald-Stadler return IIO_VAL_INT; 34862a1efb9SPeter Meerwald default: 3495d693139SPeter Meerwald-Stadler return -EINVAL; 35062a1efb9SPeter Meerwald } 35162a1efb9SPeter Meerwald case IIO_CHAN_INFO_SCALE: 3525d693139SPeter Meerwald-Stadler if (chan->type != IIO_LIGHT) 3535d693139SPeter Meerwald-Stadler return -EINVAL; 3545d693139SPeter Meerwald-Stadler 35562a1efb9SPeter Meerwald *val = 0; 3561ebc787aSTomas Novotny *val2 = data->al_scale; 3575d693139SPeter Meerwald-Stadler return IIO_VAL_INT_PLUS_MICRO; 35862a1efb9SPeter Meerwald default: 3595d693139SPeter Meerwald-Stadler return -EINVAL; 36062a1efb9SPeter Meerwald } 36162a1efb9SPeter Meerwald } 36262a1efb9SPeter Meerwald 36362a1efb9SPeter Meerwald static const struct iio_info vcnl4000_info = { 36462a1efb9SPeter Meerwald .read_raw = vcnl4000_read_raw, 36562a1efb9SPeter Meerwald }; 36662a1efb9SPeter Meerwald 367fc52692cSGreg Kroah-Hartman static int vcnl4000_probe(struct i2c_client *client, 36862a1efb9SPeter Meerwald const struct i2c_device_id *id) 36962a1efb9SPeter Meerwald { 37062a1efb9SPeter Meerwald struct vcnl4000_data *data; 37162a1efb9SPeter Meerwald struct iio_dev *indio_dev; 3721ebc787aSTomas Novotny int ret; 37362a1efb9SPeter Meerwald 3742669d723SPeter Meerwald indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 37562a1efb9SPeter Meerwald if (!indio_dev) 37662a1efb9SPeter Meerwald return -ENOMEM; 37762a1efb9SPeter Meerwald 37862a1efb9SPeter Meerwald data = iio_priv(indio_dev); 37962a1efb9SPeter Meerwald i2c_set_clientdata(client, indio_dev); 38062a1efb9SPeter Meerwald data->client = client; 3811ebc787aSTomas Novotny data->id = id->driver_data; 3821ebc787aSTomas Novotny data->chip_spec = &vcnl4000_chip_spec_cfg[data->id]; 38362a1efb9SPeter Meerwald 3841ebc787aSTomas Novotny ret = data->chip_spec->init(data); 38562a1efb9SPeter Meerwald if (ret < 0) 3862669d723SPeter Meerwald return ret; 38762a1efb9SPeter Meerwald 388d978bfddSPeter Meerwald-Stadler dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n", 3891ebc787aSTomas Novotny data->chip_spec->prod, data->rev); 39062a1efb9SPeter Meerwald 39162a1efb9SPeter Meerwald indio_dev->dev.parent = &client->dev; 39262a1efb9SPeter Meerwald indio_dev->info = &vcnl4000_info; 39362a1efb9SPeter Meerwald indio_dev->channels = vcnl4000_channels; 39462a1efb9SPeter Meerwald indio_dev->num_channels = ARRAY_SIZE(vcnl4000_channels); 39562a1efb9SPeter Meerwald indio_dev->name = VCNL4000_DRV_NAME; 39662a1efb9SPeter Meerwald indio_dev->modes = INDIO_DIRECT_MODE; 39762a1efb9SPeter Meerwald 398691dab42SSachin Kamat return devm_iio_device_register(&client->dev, indio_dev); 39962a1efb9SPeter Meerwald } 40062a1efb9SPeter Meerwald 401ebd457d5SAngus Ainslie (Purism) static const struct of_device_id vcnl_4000_of_match[] = { 402ebd457d5SAngus Ainslie (Purism) { 403ebd457d5SAngus Ainslie (Purism) .compatible = "vishay,vcnl4000", 404ebd457d5SAngus Ainslie (Purism) .data = "VCNL4000", 405ebd457d5SAngus Ainslie (Purism) }, 406ebd457d5SAngus Ainslie (Purism) { 407ebd457d5SAngus Ainslie (Purism) .compatible = "vishay,vcnl4010", 408ebd457d5SAngus Ainslie (Purism) .data = "VCNL4010", 409ebd457d5SAngus Ainslie (Purism) }, 410ebd457d5SAngus Ainslie (Purism) { 411ebd457d5SAngus Ainslie (Purism) .compatible = "vishay,vcnl4010", 412ebd457d5SAngus Ainslie (Purism) .data = "VCNL4020", 413ebd457d5SAngus Ainslie (Purism) }, 414ebd457d5SAngus Ainslie (Purism) { 415ebd457d5SAngus Ainslie (Purism) .compatible = "vishay,vcnl4200", 416ebd457d5SAngus Ainslie (Purism) .data = "VCNL4200", 417ebd457d5SAngus Ainslie (Purism) }, 418ebd457d5SAngus Ainslie (Purism) {}, 419ebd457d5SAngus Ainslie (Purism) }; 420ebd457d5SAngus Ainslie (Purism) MODULE_DEVICE_TABLE(of, vcnl_4000_of_match); 421ebd457d5SAngus Ainslie (Purism) 42262a1efb9SPeter Meerwald static struct i2c_driver vcnl4000_driver = { 42362a1efb9SPeter Meerwald .driver = { 42462a1efb9SPeter Meerwald .name = VCNL4000_DRV_NAME, 425ebd457d5SAngus Ainslie (Purism) .of_match_table = vcnl_4000_of_match, 42662a1efb9SPeter Meerwald }, 42762a1efb9SPeter Meerwald .probe = vcnl4000_probe, 42862a1efb9SPeter Meerwald .id_table = vcnl4000_id, 42962a1efb9SPeter Meerwald }; 43062a1efb9SPeter Meerwald 43162a1efb9SPeter Meerwald module_i2c_driver(vcnl4000_driver); 43262a1efb9SPeter Meerwald 43362a1efb9SPeter Meerwald MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); 43462a1efb9SPeter Meerwald MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver"); 43562a1efb9SPeter Meerwald MODULE_LICENSE("GPL"); 436