2038 lines
51 KiB
C
Executable File
2038 lines
51 KiB
C
Executable File
/*
|
|
* Device driver for monitoring ambient light intensity in (lux)
|
|
* and proximity detection (prox) within the TAOS TSL2X7X family of devices.
|
|
*
|
|
* Copyright (c) 2012, TAOS Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/iio/events.h>
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/iio/sysfs.h>
|
|
#include "tsl2x7x.h"
|
|
|
|
/* Cal defs*/
|
|
#define PROX_STAT_CAL 0
|
|
#define PROX_STAT_SAMP 1
|
|
#define MAX_SAMPLES_CAL 200
|
|
|
|
/* TSL2X7X Device ID */
|
|
#define TRITON_ID 0x00
|
|
#define SWORDFISH_ID 0x30
|
|
#define HALIBUT_ID 0x20
|
|
|
|
/* Lux calculation constants */
|
|
#define TSL2X7X_LUX_CALC_OVER_FLOW 65535
|
|
|
|
/* TAOS Register definitions - note:
|
|
* depending on device, some of these register are not used and the
|
|
* register address is benign.
|
|
*/
|
|
/* 2X7X register offsets */
|
|
#define TSL2X7X_MAX_CONFIG_REG 16
|
|
|
|
/* Device Registers and Masks */
|
|
#define TSL2X7X_CNTRL 0x00
|
|
#define TSL2X7X_ALS_TIME 0X01
|
|
#define TSL2X7X_PRX_TIME 0x02
|
|
#define TSL2X7X_WAIT_TIME 0x03
|
|
#define TSL2X7X_ALS_MINTHRESHLO 0X04
|
|
#define TSL2X7X_ALS_MINTHRESHHI 0X05
|
|
#define TSL2X7X_ALS_MAXTHRESHLO 0X06
|
|
#define TSL2X7X_ALS_MAXTHRESHHI 0X07
|
|
#define TSL2X7X_PRX_MINTHRESHLO 0X08
|
|
#define TSL2X7X_PRX_MINTHRESHHI 0X09
|
|
#define TSL2X7X_PRX_MAXTHRESHLO 0X0A
|
|
#define TSL2X7X_PRX_MAXTHRESHHI 0X0B
|
|
#define TSL2X7X_PERSISTENCE 0x0C
|
|
#define TSL2X7X_PRX_CONFIG 0x0D
|
|
#define TSL2X7X_PRX_COUNT 0x0E
|
|
#define TSL2X7X_GAIN 0x0F
|
|
#define TSL2X7X_NOTUSED 0x10
|
|
#define TSL2X7X_REVID 0x11
|
|
#define TSL2X7X_CHIPID 0x12
|
|
#define TSL2X7X_STATUS 0x13
|
|
#define TSL2X7X_ALS_CHAN0LO 0x14
|
|
#define TSL2X7X_ALS_CHAN0HI 0x15
|
|
#define TSL2X7X_ALS_CHAN1LO 0x16
|
|
#define TSL2X7X_ALS_CHAN1HI 0x17
|
|
#define TSL2X7X_PRX_LO 0x18
|
|
#define TSL2X7X_PRX_HI 0x19
|
|
|
|
/* tsl2X7X cmd reg masks */
|
|
#define TSL2X7X_CMD_REG 0x80
|
|
#define TSL2X7X_CMD_SPL_FN 0x60
|
|
|
|
#define TSL2X7X_CMD_PROX_INT_CLR 0X05
|
|
#define TSL2X7X_CMD_ALS_INT_CLR 0x06
|
|
#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07
|
|
|
|
/* tsl2X7X cntrl reg masks */
|
|
#define TSL2X7X_CNTL_ADC_ENBL 0x02
|
|
#define TSL2X7X_CNTL_PWR_ON 0x01
|
|
|
|
/* tsl2X7X status reg masks */
|
|
#define TSL2X7X_STA_ADC_VALID 0x01
|
|
#define TSL2X7X_STA_PRX_VALID 0x02
|
|
#define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\
|
|
TSL2X7X_STA_PRX_VALID)
|
|
#define TSL2X7X_STA_ALS_INTR 0x10
|
|
#define TSL2X7X_STA_PRX_INTR 0x20
|
|
|
|
/* tsl2X7X cntrl reg masks */
|
|
#define TSL2X7X_CNTL_REG_CLEAR 0x00
|
|
#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20
|
|
#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10
|
|
#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08
|
|
#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04
|
|
#define TSL2X7X_CNTL_PWRON 0x01
|
|
#define TSL2X7X_CNTL_ALSPON_ENBL 0x03
|
|
#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13
|
|
#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F
|
|
#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F
|
|
|
|
/*Prox diode to use */
|
|
#define TSL2X7X_DIODE0 0x10
|
|
#define TSL2X7X_DIODE1 0x20
|
|
#define TSL2X7X_DIODE_BOTH 0x30
|
|
|
|
/* LED Power */
|
|
#define TSL2X7X_mA100 0x00
|
|
#define TSL2X7X_mA50 0x40
|
|
#define TSL2X7X_mA25 0x80
|
|
#define TSL2X7X_mA13 0xD0
|
|
#define TSL2X7X_MAX_TIMER_CNT (0xFF)
|
|
|
|
#define TSL2X7X_MIN_ITIME 3
|
|
|
|
/* TAOS txx2x7x Device family members */
|
|
enum {
|
|
tsl2571,
|
|
tsl2671,
|
|
tmd2671,
|
|
tsl2771,
|
|
tmd2771,
|
|
tsl2572,
|
|
tsl2672,
|
|
tmd2672,
|
|
tsl2772,
|
|
tmd2772
|
|
};
|
|
|
|
enum {
|
|
TSL2X7X_CHIP_UNKNOWN = 0,
|
|
TSL2X7X_CHIP_WORKING = 1,
|
|
TSL2X7X_CHIP_SUSPENDED = 2
|
|
};
|
|
|
|
struct tsl2x7x_parse_result {
|
|
int integer;
|
|
int fract;
|
|
};
|
|
|
|
/* Per-device data */
|
|
struct tsl2x7x_als_info {
|
|
u16 als_ch0;
|
|
u16 als_ch1;
|
|
u16 lux;
|
|
};
|
|
|
|
struct tsl2x7x_prox_stat {
|
|
int min;
|
|
int max;
|
|
int mean;
|
|
unsigned long stddev;
|
|
};
|
|
|
|
struct tsl2x7x_chip_info {
|
|
int chan_table_elements;
|
|
struct iio_chan_spec channel[4];
|
|
const struct iio_info *info;
|
|
};
|
|
|
|
struct tsl2X7X_chip {
|
|
kernel_ulong_t id;
|
|
struct mutex prox_mutex;
|
|
struct mutex als_mutex;
|
|
struct i2c_client *client;
|
|
u16 prox_data;
|
|
struct tsl2x7x_als_info als_cur_info;
|
|
struct tsl2x7x_settings tsl2x7x_settings;
|
|
struct tsl2X7X_platform_data *pdata;
|
|
int als_time_scale;
|
|
int als_saturation;
|
|
int tsl2x7x_chip_status;
|
|
u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG];
|
|
const struct tsl2x7x_chip_info *chip_info;
|
|
const struct iio_info *info;
|
|
s64 event_timestamp;
|
|
/*
|
|
* This structure is intentionally large to accommodate
|
|
* updates via sysfs.
|
|
* Sized to 9 = max 8 segments + 1 termination segment
|
|
*/
|
|
struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE];
|
|
};
|
|
|
|
/* Different devices require different coefficents */
|
|
static const struct tsl2x7x_lux tsl2x71_lux_table[] = {
|
|
{ 14461, 611, 1211 },
|
|
{ 18540, 352, 623 },
|
|
{ 0, 0, 0 },
|
|
};
|
|
|
|
static const struct tsl2x7x_lux tmd2x71_lux_table[] = {
|
|
{ 11635, 115, 256 },
|
|
{ 15536, 87, 179 },
|
|
{ 0, 0, 0 },
|
|
};
|
|
|
|
static const struct tsl2x7x_lux tsl2x72_lux_table[] = {
|
|
{ 14013, 466, 917 },
|
|
{ 18222, 310, 552 },
|
|
{ 0, 0, 0 },
|
|
};
|
|
|
|
static const struct tsl2x7x_lux tmd2x72_lux_table[] = {
|
|
{ 13218, 130, 262 },
|
|
{ 17592, 92, 169 },
|
|
{ 0, 0, 0 },
|
|
};
|
|
|
|
static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = {
|
|
[tsl2571] = tsl2x71_lux_table,
|
|
[tsl2671] = tsl2x71_lux_table,
|
|
[tmd2671] = tmd2x71_lux_table,
|
|
[tsl2771] = tsl2x71_lux_table,
|
|
[tmd2771] = tmd2x71_lux_table,
|
|
[tsl2572] = tsl2x72_lux_table,
|
|
[tsl2672] = tsl2x72_lux_table,
|
|
[tmd2672] = tmd2x72_lux_table,
|
|
[tsl2772] = tsl2x72_lux_table,
|
|
[tmd2772] = tmd2x72_lux_table,
|
|
};
|
|
|
|
static const struct tsl2x7x_settings tsl2x7x_default_settings = {
|
|
.als_time = 219, /* 101 ms */
|
|
.als_gain = 0,
|
|
.prx_time = 254, /* 5.4 ms */
|
|
.prox_gain = 1,
|
|
.wait_time = 245,
|
|
.prox_config = 0,
|
|
.als_gain_trim = 1000,
|
|
.als_cal_target = 150,
|
|
.als_thresh_low = 200,
|
|
.als_thresh_high = 256,
|
|
.persistence = 255,
|
|
.interrupts_en = 0,
|
|
.prox_thres_low = 0,
|
|
.prox_thres_high = 512,
|
|
.prox_max_samples_cal = 30,
|
|
.prox_pulse_count = 8
|
|
};
|
|
|
|
static const s16 tsl2X7X_als_gainadj[] = {
|
|
1,
|
|
8,
|
|
16,
|
|
120
|
|
};
|
|
|
|
static const s16 tsl2X7X_prx_gainadj[] = {
|
|
1,
|
|
2,
|
|
4,
|
|
8
|
|
};
|
|
|
|
/* Channel variations */
|
|
enum {
|
|
ALS,
|
|
PRX,
|
|
ALSPRX,
|
|
PRX2,
|
|
ALSPRX2,
|
|
};
|
|
|
|
static const u8 device_channel_config[] = {
|
|
ALS,
|
|
PRX,
|
|
PRX,
|
|
ALSPRX,
|
|
ALSPRX,
|
|
ALS,
|
|
PRX2,
|
|
PRX2,
|
|
ALSPRX2,
|
|
ALSPRX2
|
|
};
|
|
|
|
/**
|
|
* tsl2x7x_get_lux() - Reads and calculates current lux value.
|
|
* @indio_dev: pointer to IIO device
|
|
*
|
|
* The raw ch0 and ch1 values of the ambient light sensed in the last
|
|
* integration cycle are read from the device.
|
|
* Time scale factor array values are adjusted based on the integration time.
|
|
* The raw values are multiplied by a scale factor, and device gain is obtained
|
|
* using gain index. Limit checks are done next, then the ratio of a multiple
|
|
* of ch1 value, to the ch0 value, is calculated. Array tsl2x7x_device_lux[]
|
|
* is then scanned to find the first ratio value that is just above the ratio
|
|
* we just calculated. The ch0 and ch1 multiplier constants in the array are
|
|
* then used along with the time scale factor array values, to calculate the
|
|
* lux.
|
|
*/
|
|
static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
|
|
{
|
|
u16 ch0, ch1; /* separated ch0/ch1 data from device */
|
|
u32 lux; /* raw lux calculated from device data */
|
|
u64 lux64;
|
|
u32 ratio;
|
|
u8 buf[4];
|
|
struct tsl2x7x_lux *p;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int i, ret;
|
|
u32 ch0lux = 0;
|
|
u32 ch1lux = 0;
|
|
|
|
if (mutex_trylock(&chip->als_mutex) == 0)
|
|
return chip->als_cur_info.lux; /* busy, so return LAST VALUE */
|
|
|
|
if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) {
|
|
/* device is not enabled */
|
|
dev_err(&chip->client->dev, "%s: device is not enabled\n",
|
|
__func__);
|
|
ret = -EBUSY;
|
|
goto out_unlock;
|
|
}
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_STATUS);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: Failed to read STATUS Reg\n", __func__);
|
|
goto out_unlock;
|
|
}
|
|
/* is data new & valid */
|
|
if (!(ret & TSL2X7X_STA_ADC_VALID)) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: data not valid yet\n", __func__);
|
|
ret = chip->als_cur_info.lux; /* return LAST VALUE */
|
|
goto out_unlock;
|
|
}
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
int reg = TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i);
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client, reg);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"failed to read. err=%x\n", ret);
|
|
goto out_unlock;
|
|
}
|
|
|
|
buf[i] = ret;
|
|
}
|
|
|
|
/* clear any existing interrupt status */
|
|
ret = i2c_smbus_write_byte(chip->client,
|
|
(TSL2X7X_CMD_REG |
|
|
TSL2X7X_CMD_SPL_FN |
|
|
TSL2X7X_CMD_ALS_INT_CLR));
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"i2c_write_command failed - err = %d\n", ret);
|
|
goto out_unlock; /* have no data, so return failure */
|
|
}
|
|
|
|
/* extract ALS/lux data */
|
|
ch0 = le16_to_cpup((const __le16 *)&buf[0]);
|
|
ch1 = le16_to_cpup((const __le16 *)&buf[2]);
|
|
|
|
chip->als_cur_info.als_ch0 = ch0;
|
|
chip->als_cur_info.als_ch1 = ch1;
|
|
|
|
if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) {
|
|
lux = TSL2X7X_LUX_CALC_OVER_FLOW;
|
|
goto return_max;
|
|
}
|
|
|
|
if (!ch0) {
|
|
/* have no data, so return LAST VALUE */
|
|
ret = chip->als_cur_info.lux;
|
|
goto out_unlock;
|
|
}
|
|
/* calculate ratio */
|
|
ratio = (ch1 << 15) / ch0;
|
|
/* convert to unscaled lux using the pointer to the table */
|
|
p = (struct tsl2x7x_lux *)chip->tsl2x7x_device_lux;
|
|
while (p->ratio != 0 && p->ratio < ratio)
|
|
p++;
|
|
|
|
if (p->ratio == 0) {
|
|
lux = 0;
|
|
} else {
|
|
ch0lux = DIV_ROUND_UP(ch0 * p->ch0,
|
|
tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
|
|
ch1lux = DIV_ROUND_UP(ch1 * p->ch1,
|
|
tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
|
|
lux = ch0lux - ch1lux;
|
|
}
|
|
|
|
/* note: lux is 31 bit max at this point */
|
|
if (ch1lux > ch0lux) {
|
|
dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n");
|
|
ret = chip->als_cur_info.lux;
|
|
goto out_unlock;
|
|
}
|
|
|
|
/* adjust for active time scale */
|
|
if (chip->als_time_scale == 0)
|
|
lux = 0;
|
|
else
|
|
lux = (lux + (chip->als_time_scale >> 1)) /
|
|
chip->als_time_scale;
|
|
|
|
/* adjust for active gain scale
|
|
* The tsl2x7x_device_lux tables have a factor of 256 built-in.
|
|
* User-specified gain provides a multiplier.
|
|
* Apply user-specified gain before shifting right to retain precision.
|
|
* Use 64 bits to avoid overflow on multiplication.
|
|
* Then go back to 32 bits before division to avoid using div_u64().
|
|
*/
|
|
|
|
lux64 = lux;
|
|
lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim;
|
|
lux64 >>= 8;
|
|
lux = lux64;
|
|
lux = (lux + 500) / 1000;
|
|
|
|
if (lux > TSL2X7X_LUX_CALC_OVER_FLOW) /* check for overflow */
|
|
lux = TSL2X7X_LUX_CALC_OVER_FLOW;
|
|
|
|
/* Update the structure with the latest lux. */
|
|
return_max:
|
|
chip->als_cur_info.lux = lux;
|
|
ret = lux;
|
|
|
|
out_unlock:
|
|
mutex_unlock(&chip->als_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* tsl2x7x_get_prox() - Reads proximity data registers and updates
|
|
* chip->prox_data.
|
|
*
|
|
* @indio_dev: pointer to IIO device
|
|
*/
|
|
static int tsl2x7x_get_prox(struct iio_dev *indio_dev)
|
|
{
|
|
int i;
|
|
int ret;
|
|
u8 chdata[2];
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
|
if (mutex_trylock(&chip->prox_mutex) == 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: Can't get prox mutex\n", __func__);
|
|
return -EBUSY;
|
|
}
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_STATUS);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev, "i2c err=%d\n", ret);
|
|
goto prox_poll_err;
|
|
}
|
|
|
|
switch (chip->id) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tmd2671:
|
|
case tsl2771:
|
|
case tmd2771:
|
|
if (!(ret & TSL2X7X_STA_ADC_VALID))
|
|
goto prox_poll_err;
|
|
break;
|
|
case tsl2572:
|
|
case tsl2672:
|
|
case tmd2672:
|
|
case tsl2772:
|
|
case tmd2772:
|
|
if (!(ret & TSL2X7X_STA_PRX_VALID))
|
|
goto prox_poll_err;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
int reg = TSL2X7X_CMD_REG | (TSL2X7X_PRX_LO + i);
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client, reg);
|
|
if (ret < 0)
|
|
goto prox_poll_err;
|
|
|
|
chdata[i] = ret;
|
|
}
|
|
|
|
chip->prox_data =
|
|
le16_to_cpup((const __le16 *)&chdata[0]);
|
|
|
|
prox_poll_err:
|
|
|
|
mutex_unlock(&chip->prox_mutex);
|
|
|
|
return chip->prox_data;
|
|
}
|
|
|
|
/**
|
|
* tsl2x7x_defaults() - Populates the device nominal operating parameters
|
|
* with those provided by a 'platform' data struct or
|
|
* with prefined defaults.
|
|
*
|
|
* @chip: pointer to device structure.
|
|
*/
|
|
static void tsl2x7x_defaults(struct tsl2X7X_chip *chip)
|
|
{
|
|
/* If Operational settings defined elsewhere.. */
|
|
if (chip->pdata && chip->pdata->platform_default_settings)
|
|
memcpy(&chip->tsl2x7x_settings,
|
|
chip->pdata->platform_default_settings,
|
|
sizeof(tsl2x7x_default_settings));
|
|
else
|
|
memcpy(&chip->tsl2x7x_settings,
|
|
&tsl2x7x_default_settings,
|
|
sizeof(tsl2x7x_default_settings));
|
|
|
|
/* Load up the proper lux table. */
|
|
if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0)
|
|
memcpy(chip->tsl2x7x_device_lux,
|
|
chip->pdata->platform_lux_table,
|
|
sizeof(chip->pdata->platform_lux_table));
|
|
else
|
|
memcpy(chip->tsl2x7x_device_lux,
|
|
(struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id],
|
|
MAX_DEFAULT_TABLE_BYTES);
|
|
}
|
|
|
|
/**
|
|
* tsl2x7x_als_calibrate() - Obtain single reading and calculate
|
|
* the als_gain_trim.
|
|
*
|
|
* @indio_dev: pointer to IIO device
|
|
*/
|
|
static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int gain_trim_val;
|
|
int ret;
|
|
int lux_val;
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CNTRL);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to read from the CNTRL register\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
|
|
if ((ret & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON))
|
|
!= (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: Device is not powered on and/or ADC is not enabled\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
} else if ((ret & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: The two ADC channels have not completed an integration cycle\n",
|
|
__func__);
|
|
return -ENODATA;
|
|
}
|
|
|
|
lux_val = tsl2x7x_get_lux(indio_dev);
|
|
if (lux_val < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to get lux\n", __func__);
|
|
return lux_val;
|
|
}
|
|
|
|
gain_trim_val = ((chip->tsl2x7x_settings.als_cal_target)
|
|
* chip->tsl2x7x_settings.als_gain_trim) / lux_val;
|
|
if ((gain_trim_val < 250) || (gain_trim_val > 4000))
|
|
return -ERANGE;
|
|
|
|
chip->tsl2x7x_settings.als_gain_trim = gain_trim_val;
|
|
dev_info(&chip->client->dev,
|
|
"%s als_calibrate completed\n", chip->client->name);
|
|
|
|
return (int)gain_trim_val;
|
|
}
|
|
|
|
static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
|
|
{
|
|
int i;
|
|
int ret = 0;
|
|
u8 *dev_reg;
|
|
u8 utmp;
|
|
int als_count;
|
|
int als_time;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
u8 reg_val = 0;
|
|
|
|
if (chip->pdata && chip->pdata->power_on)
|
|
chip->pdata->power_on(indio_dev);
|
|
|
|
/* Non calculated parameters */
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_TIME] =
|
|
chip->tsl2x7x_settings.prx_time;
|
|
chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] =
|
|
chip->tsl2x7x_settings.wait_time;
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] =
|
|
chip->tsl2x7x_settings.prox_config;
|
|
|
|
chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] =
|
|
(chip->tsl2x7x_settings.als_thresh_low) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] =
|
|
(chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] =
|
|
(chip->tsl2x7x_settings.als_thresh_high) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] =
|
|
(chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] =
|
|
chip->tsl2x7x_settings.persistence;
|
|
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] =
|
|
chip->tsl2x7x_settings.prox_pulse_count;
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] =
|
|
(chip->tsl2x7x_settings.prox_thres_low) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] =
|
|
(chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
|
|
(chip->tsl2x7x_settings.prox_thres_high) & 0xFF;
|
|
chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] =
|
|
(chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF;
|
|
|
|
/* and make sure we're not already on */
|
|
if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
|
|
/* if forcing a register update - turn off, then on */
|
|
dev_info(&chip->client->dev, "device is already enabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* determine als integration register */
|
|
als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
|
|
if (!als_count)
|
|
als_count = 1; /* ensure at least one cycle */
|
|
|
|
/* convert back to time (encompasses overrides) */
|
|
als_time = (als_count * 27 + 5) / 10;
|
|
chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count;
|
|
|
|
/* Set the gain based on tsl2x7x_settings struct */
|
|
chip->tsl2x7x_config[TSL2X7X_GAIN] =
|
|
chip->tsl2x7x_settings.als_gain |
|
|
(TSL2X7X_mA100 | TSL2X7X_DIODE1)
|
|
| ((chip->tsl2x7x_settings.prox_gain) << 2);
|
|
|
|
/* set chip struct re scaling and saturation */
|
|
chip->als_saturation = als_count * 922; /* 90% of full scale */
|
|
chip->als_time_scale = (als_time + 25) / 50;
|
|
|
|
/*
|
|
* TSL2X7X Specific power-on / adc enable sequence
|
|
* Power on the device 1st.
|
|
*/
|
|
utmp = TSL2X7X_CNTL_PWR_ON;
|
|
ret = i2c_smbus_write_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed on CNTRL reg.\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Use the following shadow copy for our delay before enabling ADC.
|
|
* Write all the registers.
|
|
*/
|
|
for (i = 0, dev_reg = chip->tsl2x7x_config;
|
|
i < TSL2X7X_MAX_CONFIG_REG; i++) {
|
|
ret = i2c_smbus_write_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG + i,
|
|
*dev_reg++);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"failed on write to reg %d.\n", i);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Power-on settling time */
|
|
usleep_range(3000, 3500);
|
|
|
|
/*
|
|
* NOW enable the ADC
|
|
* initialize the desired mode of operation
|
|
*/
|
|
utmp = TSL2X7X_CNTL_PWR_ON |
|
|
TSL2X7X_CNTL_ADC_ENBL |
|
|
TSL2X7X_CNTL_PROX_DET_ENBL;
|
|
ret = i2c_smbus_write_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed on 2nd CTRL reg.\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING;
|
|
|
|
if (chip->tsl2x7x_settings.interrupts_en != 0) {
|
|
dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n");
|
|
|
|
reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL;
|
|
if ((chip->tsl2x7x_settings.interrupts_en == 0x20) ||
|
|
(chip->tsl2x7x_settings.interrupts_en == 0x30))
|
|
reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL;
|
|
|
|
reg_val |= chip->tsl2x7x_settings.interrupts_en;
|
|
ret = i2c_smbus_write_byte_data(chip->client,
|
|
(TSL2X7X_CMD_REG |
|
|
TSL2X7X_CNTRL), reg_val);
|
|
if (ret < 0)
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed in tsl2x7x_IOCTL_INT_SET.\n",
|
|
__func__);
|
|
|
|
/* Clear out any initial interrupts */
|
|
ret = i2c_smbus_write_byte(chip->client,
|
|
TSL2X7X_CMD_REG |
|
|
TSL2X7X_CMD_SPL_FN |
|
|
TSL2X7X_CMD_PROXALS_INT_CLR);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: Failed to clear Int status\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_chip_off(struct iio_dev *indio_dev)
|
|
{
|
|
int ret;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
|
/* turn device off */
|
|
chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
|
|
|
|
ret = i2c_smbus_write_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00);
|
|
|
|
if (chip->pdata && chip->pdata->power_off)
|
|
chip->pdata->power_off(chip->client);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* tsl2x7x_invoke_change
|
|
* @indio_dev: pointer to IIO device
|
|
*
|
|
* Obtain and lock both ALS and PROX resources,
|
|
* determine and save device state (On/Off),
|
|
* cycle device to implement updated parameter,
|
|
* put device back into proper state, and unlock
|
|
* resource.
|
|
*/
|
|
static
|
|
int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int device_status = chip->tsl2x7x_chip_status;
|
|
int ret;
|
|
|
|
mutex_lock(&chip->als_mutex);
|
|
mutex_lock(&chip->prox_mutex);
|
|
|
|
if (device_status == TSL2X7X_CHIP_WORKING) {
|
|
ret = tsl2x7x_chip_off(indio_dev);
|
|
if (ret < 0)
|
|
goto unlock;
|
|
}
|
|
|
|
ret = tsl2x7x_chip_on(indio_dev);
|
|
|
|
unlock:
|
|
mutex_unlock(&chip->prox_mutex);
|
|
mutex_unlock(&chip->als_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static
|
|
void tsl2x7x_prox_calculate(int *data, int length,
|
|
struct tsl2x7x_prox_stat *statP)
|
|
{
|
|
int i;
|
|
int sample_sum;
|
|
int tmp;
|
|
|
|
if (!length)
|
|
length = 1;
|
|
|
|
sample_sum = 0;
|
|
statP->min = INT_MAX;
|
|
statP->max = INT_MIN;
|
|
for (i = 0; i < length; i++) {
|
|
sample_sum += data[i];
|
|
statP->min = min(statP->min, data[i]);
|
|
statP->max = max(statP->max, data[i]);
|
|
}
|
|
|
|
statP->mean = sample_sum / length;
|
|
sample_sum = 0;
|
|
for (i = 0; i < length; i++) {
|
|
tmp = data[i] - statP->mean;
|
|
sample_sum += tmp * tmp;
|
|
}
|
|
statP->stddev = int_sqrt((long)sample_sum / length);
|
|
}
|
|
|
|
/**
|
|
* tsl2x7x_prox_cal() - Calculates std. and sets thresholds.
|
|
* @indio_dev: pointer to IIO device
|
|
*
|
|
* Calculates a standard deviation based on the samples,
|
|
* and sets the threshold accordingly.
|
|
*/
|
|
static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
|
|
{
|
|
int prox_history[MAX_SAMPLES_CAL + 1];
|
|
int i;
|
|
struct tsl2x7x_prox_stat prox_stat_data[2];
|
|
struct tsl2x7x_prox_stat *calP;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
u8 tmp_irq_settings;
|
|
u8 current_state = chip->tsl2x7x_chip_status;
|
|
|
|
if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) {
|
|
dev_err(&chip->client->dev,
|
|
"max prox samples cal is too big: %d\n",
|
|
chip->tsl2x7x_settings.prox_max_samples_cal);
|
|
chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL;
|
|
}
|
|
|
|
/* have to stop to change settings */
|
|
tsl2x7x_chip_off(indio_dev);
|
|
|
|
/* Enable proximity detection save just in case prox not wanted yet*/
|
|
tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en;
|
|
chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL;
|
|
|
|
/*turn on device if not already on*/
|
|
tsl2x7x_chip_on(indio_dev);
|
|
|
|
/*gather the samples*/
|
|
for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) {
|
|
usleep_range(15000, 17500);
|
|
tsl2x7x_get_prox(indio_dev);
|
|
prox_history[i] = chip->prox_data;
|
|
dev_info(&chip->client->dev, "2 i=%d prox data= %d\n",
|
|
i, chip->prox_data);
|
|
}
|
|
|
|
tsl2x7x_chip_off(indio_dev);
|
|
calP = &prox_stat_data[PROX_STAT_CAL];
|
|
tsl2x7x_prox_calculate(prox_history,
|
|
chip->tsl2x7x_settings.prox_max_samples_cal,
|
|
calP);
|
|
chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean;
|
|
|
|
dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n",
|
|
calP->min, calP->mean, calP->max);
|
|
dev_info(&chip->client->dev,
|
|
"%s proximity threshold set to %d\n",
|
|
chip->client->name, chip->tsl2x7x_settings.prox_thres_high);
|
|
|
|
/* back to the way they were */
|
|
chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings;
|
|
if (current_state == TSL2X7X_CHIP_WORKING)
|
|
tsl2x7x_chip_on(indio_dev);
|
|
}
|
|
|
|
static ssize_t in_illuminance0_calibscale_available_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
|
|
switch (chip->id) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tmd2671:
|
|
case tsl2771:
|
|
case tmd2771:
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128");
|
|
}
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120");
|
|
}
|
|
|
|
static ssize_t in_proximity0_calibscale_available_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8");
|
|
}
|
|
|
|
static ssize_t in_illuminance0_integration_time_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
int y, z;
|
|
|
|
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
z = y * TSL2X7X_MIN_ITIME;
|
|
y /= 1000;
|
|
z %= 1000;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
}
|
|
|
|
static ssize_t in_illuminance0_integration_time_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
struct tsl2x7x_parse_result result;
|
|
int ret;
|
|
|
|
ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
|
|
if (ret)
|
|
return ret;
|
|
|
|
result.fract /= 3;
|
|
chip->tsl2x7x_settings.als_time =
|
|
TSL2X7X_MAX_TIMER_CNT - (u8)result.fract;
|
|
|
|
dev_info(&chip->client->dev, "%s: als time = %d",
|
|
__func__, chip->tsl2x7x_settings.als_time);
|
|
|
|
tsl2x7x_invoke_change(indio_dev);
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
}
|
|
|
|
static IIO_CONST_ATTR(in_illuminance0_integration_time_available,
|
|
".00272 - .696");
|
|
|
|
static ssize_t in_illuminance0_target_input_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n",
|
|
chip->tsl2x7x_settings.als_cal_target);
|
|
}
|
|
|
|
static ssize_t in_illuminance0_target_input_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
unsigned long value;
|
|
int ret;
|
|
|
|
if (kstrtoul(buf, 0, &value))
|
|
return -EINVAL;
|
|
|
|
if (value)
|
|
chip->tsl2x7x_settings.als_cal_target = value;
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
/* persistence settings */
|
|
static ssize_t in_intensity0_thresh_period_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
int y, z, filter_delay;
|
|
|
|
/* Determine integration time */
|
|
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
z = y * TSL2X7X_MIN_ITIME;
|
|
filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
|
|
y = filter_delay / 1000;
|
|
z = filter_delay % 1000;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
}
|
|
|
|
static ssize_t in_intensity0_thresh_period_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
struct tsl2x7x_parse_result result;
|
|
int y, z, filter_delay;
|
|
int ret;
|
|
|
|
ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
|
|
if (ret)
|
|
return ret;
|
|
|
|
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
|
|
z = y * TSL2X7X_MIN_ITIME;
|
|
|
|
filter_delay =
|
|
DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
|
|
|
|
chip->tsl2x7x_settings.persistence &= 0xF0;
|
|
chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F);
|
|
|
|
dev_info(&chip->client->dev, "%s: als persistence = %d",
|
|
__func__, filter_delay);
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
}
|
|
|
|
static ssize_t in_proximity0_thresh_period_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
int y, z, filter_delay;
|
|
|
|
/* Determine integration time */
|
|
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
|
|
z = y * TSL2X7X_MIN_ITIME;
|
|
filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
|
|
y = filter_delay / 1000;
|
|
z = filter_delay % 1000;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
|
|
}
|
|
|
|
static ssize_t in_proximity0_thresh_period_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
struct tsl2x7x_parse_result result;
|
|
int y, z, filter_delay;
|
|
int ret;
|
|
|
|
ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
|
|
if (ret)
|
|
return ret;
|
|
|
|
y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
|
|
z = y * TSL2X7X_MIN_ITIME;
|
|
|
|
filter_delay =
|
|
DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
|
|
|
|
chip->tsl2x7x_settings.persistence &= 0x0F;
|
|
chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0);
|
|
|
|
dev_info(&chip->client->dev, "%s: prox persistence = %d",
|
|
__func__, filter_delay);
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_calibrate_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
bool value;
|
|
int ret;
|
|
|
|
if (strtobool(buf, &value))
|
|
return -EINVAL;
|
|
|
|
if (value)
|
|
tsl2x7x_als_calibrate(indio_dev);
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_lux_table_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
int i = 0;
|
|
int offset = 0;
|
|
|
|
while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
|
|
offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,",
|
|
chip->tsl2x7x_device_lux[i].ratio,
|
|
chip->tsl2x7x_device_lux[i].ch0,
|
|
chip->tsl2x7x_device_lux[i].ch1);
|
|
if (chip->tsl2x7x_device_lux[i].ratio == 0) {
|
|
/*
|
|
* We just printed the first "0" entry.
|
|
* Now get rid of the extra "," and break.
|
|
*/
|
|
offset--;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
offset += snprintf(buf + offset, PAGE_SIZE, "\n");
|
|
return offset;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_lux_table_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int value[ARRAY_SIZE(chip->tsl2x7x_device_lux) * 3 + 1];
|
|
int n, ret;
|
|
|
|
get_options(buf, ARRAY_SIZE(value), value);
|
|
|
|
/* We now have an array of ints starting at value[1], and
|
|
* enumerated by value[0].
|
|
* We expect each group of three ints is one table entry,
|
|
* and the last table entry is all 0.
|
|
*/
|
|
n = value[0];
|
|
if ((n % 3) || n < 6 ||
|
|
n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) {
|
|
dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) {
|
|
dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING)
|
|
tsl2x7x_chip_off(indio_dev);
|
|
|
|
/* Zero out the table */
|
|
memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux));
|
|
memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4));
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t in_proximity0_calibrate_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
bool value;
|
|
int ret;
|
|
|
|
if (strtobool(buf, &value))
|
|
return -EINVAL;
|
|
|
|
if (value)
|
|
tsl2x7x_prox_cal(indio_dev);
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
if (chan->type == IIO_INTENSITY)
|
|
ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10);
|
|
else
|
|
ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
int val)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
if (chan->type == IIO_INTENSITY) {
|
|
if (val)
|
|
chip->tsl2x7x_settings.interrupts_en |= 0x10;
|
|
else
|
|
chip->tsl2x7x_settings.interrupts_en &= 0x20;
|
|
} else {
|
|
if (val)
|
|
chip->tsl2x7x_settings.interrupts_en |= 0x20;
|
|
else
|
|
chip->tsl2x7x_settings.interrupts_en &= 0x10;
|
|
}
|
|
|
|
ret = tsl2x7x_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsl2x7x_write_event_value(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int val, int val2)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret = -EINVAL;
|
|
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
chip->tsl2x7x_settings.als_thresh_high = val;
|
|
ret = 0;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
chip->tsl2x7x_settings.als_thresh_low = val;
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
chip->tsl2x7x_settings.prox_thres_high = val;
|
|
ret = 0;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
chip->tsl2x7x_settings.prox_thres_low = val;
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return tsl2x7x_invoke_change(indio_dev);
|
|
}
|
|
|
|
static int tsl2x7x_read_event_value(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int *val, int *val2)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret = -EINVAL;
|
|
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
*val = chip->tsl2x7x_settings.als_thresh_high;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
*val = chip->tsl2x7x_settings.als_thresh_low;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
*val = chip->tsl2x7x_settings.prox_thres_high;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
*val = chip->tsl2x7x_settings.prox_thres_low;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int *val,
|
|
int *val2,
|
|
long mask)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_PROCESSED:
|
|
switch (chan->type) {
|
|
case IIO_LIGHT:
|
|
tsl2x7x_get_lux(indio_dev);
|
|
*val = chip->als_cur_info.lux;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case IIO_CHAN_INFO_RAW:
|
|
switch (chan->type) {
|
|
case IIO_INTENSITY:
|
|
tsl2x7x_get_lux(indio_dev);
|
|
if (chan->channel == 0)
|
|
*val = chip->als_cur_info.als_ch0;
|
|
else
|
|
*val = chip->als_cur_info.als_ch1;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
case IIO_PROXIMITY:
|
|
tsl2x7x_get_prox(indio_dev);
|
|
*val = chip->prox_data;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case IIO_CHAN_INFO_CALIBSCALE:
|
|
if (chan->type == IIO_LIGHT)
|
|
*val =
|
|
tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain];
|
|
else
|
|
*val =
|
|
tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain];
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
case IIO_CHAN_INFO_CALIBBIAS:
|
|
*val = chip->tsl2x7x_settings.als_gain_trim;
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int val,
|
|
int val2,
|
|
long mask)
|
|
{
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_CALIBSCALE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (val) {
|
|
case 1:
|
|
chip->tsl2x7x_settings.als_gain = 0;
|
|
break;
|
|
case 8:
|
|
chip->tsl2x7x_settings.als_gain = 1;
|
|
break;
|
|
case 16:
|
|
chip->tsl2x7x_settings.als_gain = 2;
|
|
break;
|
|
case 120:
|
|
switch (chip->id) {
|
|
case tsl2572:
|
|
case tsl2672:
|
|
case tmd2672:
|
|
case tsl2772:
|
|
case tmd2772:
|
|
return -EINVAL;
|
|
}
|
|
chip->tsl2x7x_settings.als_gain = 3;
|
|
break;
|
|
case 128:
|
|
switch (chip->id) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tmd2671:
|
|
case tsl2771:
|
|
case tmd2771:
|
|
return -EINVAL;
|
|
}
|
|
chip->tsl2x7x_settings.als_gain = 3;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
switch (val) {
|
|
case 1:
|
|
chip->tsl2x7x_settings.prox_gain = 0;
|
|
break;
|
|
case 2:
|
|
chip->tsl2x7x_settings.prox_gain = 1;
|
|
break;
|
|
case 4:
|
|
chip->tsl2x7x_settings.prox_gain = 2;
|
|
break;
|
|
case 8:
|
|
chip->tsl2x7x_settings.prox_gain = 3;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
case IIO_CHAN_INFO_CALIBBIAS:
|
|
chip->tsl2x7x_settings.als_gain_trim = val;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return tsl2x7x_invoke_change(indio_dev);
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(in_proximity0_calibscale_available);
|
|
|
|
static DEVICE_ATTR_RO(in_illuminance0_calibscale_available);
|
|
|
|
static DEVICE_ATTR_RW(in_illuminance0_integration_time);
|
|
|
|
static DEVICE_ATTR_RW(in_illuminance0_target_input);
|
|
|
|
static DEVICE_ATTR_WO(in_illuminance0_calibrate);
|
|
|
|
static DEVICE_ATTR_WO(in_proximity0_calibrate);
|
|
|
|
static DEVICE_ATTR_RW(in_illuminance0_lux_table);
|
|
|
|
static DEVICE_ATTR_RW(in_intensity0_thresh_period);
|
|
|
|
static DEVICE_ATTR_RW(in_proximity0_thresh_period);
|
|
|
|
/* Use the default register values to identify the Taos device */
|
|
static int tsl2x7x_device_id(int *id, int target)
|
|
{
|
|
switch (target) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tsl2771:
|
|
return (*id & 0xf0) == TRITON_ID;
|
|
case tmd2671:
|
|
case tmd2771:
|
|
return (*id & 0xf0) == HALIBUT_ID;
|
|
case tsl2572:
|
|
case tsl2672:
|
|
case tmd2672:
|
|
case tsl2772:
|
|
case tmd2772:
|
|
return (*id & 0xf0) == SWORDFISH_ID;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
|
|
{
|
|
struct iio_dev *indio_dev = private;
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
s64 timestamp = iio_get_time_ns(indio_dev);
|
|
int ret;
|
|
u8 value;
|
|
|
|
value = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_STATUS);
|
|
|
|
/* What type of interrupt do we need to process */
|
|
if (value & TSL2X7X_STA_PRX_INTR) {
|
|
tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */
|
|
iio_push_event(indio_dev,
|
|
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
|
|
0,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_EITHER),
|
|
timestamp);
|
|
}
|
|
|
|
if (value & TSL2X7X_STA_ALS_INTR) {
|
|
tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */
|
|
iio_push_event(indio_dev,
|
|
IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
|
|
0,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_EITHER),
|
|
timestamp);
|
|
}
|
|
/* Clear interrupt now that we have handled it. */
|
|
ret = i2c_smbus_write_byte(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN |
|
|
TSL2X7X_CMD_PROXALS_INT_CLR);
|
|
if (ret < 0)
|
|
dev_err(&chip->client->dev,
|
|
"Failed to clear irq from event handler. err = %d\n",
|
|
ret);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static struct attribute *tsl2x7x_ALS_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_calibscale_available.attr,
|
|
&dev_attr_in_illuminance0_integration_time.attr,
|
|
&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2x7x_PRX_device_attrs[] = {
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_calibscale_available.attr,
|
|
&dev_attr_in_illuminance0_integration_time.attr,
|
|
&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
&dev_attr_in_proximity0_calibscale_available.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_calibscale_available.attr,
|
|
&dev_attr_in_illuminance0_integration_time.attr,
|
|
&iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
&dev_attr_in_proximity0_calibscale_available.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2X7X_ALS_event_attrs[] = {
|
|
&dev_attr_in_intensity0_thresh_period.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute *tsl2X7X_PRX_event_attrs[] = {
|
|
&dev_attr_in_proximity0_thresh_period.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
|
|
&dev_attr_in_intensity0_thresh_period.attr,
|
|
&dev_attr_in_proximity0_thresh_period.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
|
|
[ALS] = {
|
|
.attrs = tsl2x7x_ALS_device_attrs,
|
|
},
|
|
[PRX] = {
|
|
.attrs = tsl2x7x_PRX_device_attrs,
|
|
},
|
|
[ALSPRX] = {
|
|
.attrs = tsl2x7x_ALSPRX_device_attrs,
|
|
},
|
|
[PRX2] = {
|
|
.attrs = tsl2x7x_PRX2_device_attrs,
|
|
},
|
|
[ALSPRX2] = {
|
|
.attrs = tsl2x7x_ALSPRX2_device_attrs,
|
|
},
|
|
};
|
|
|
|
static const struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
|
|
[ALS] = {
|
|
.attrs = tsl2X7X_ALS_event_attrs,
|
|
.name = "events",
|
|
},
|
|
[PRX] = {
|
|
.attrs = tsl2X7X_PRX_event_attrs,
|
|
.name = "events",
|
|
},
|
|
[ALSPRX] = {
|
|
.attrs = tsl2X7X_ALSPRX_event_attrs,
|
|
.name = "events",
|
|
},
|
|
};
|
|
|
|
static const struct iio_info tsl2X7X_device_info[] = {
|
|
[ALS] = {
|
|
.attrs = &tsl2X7X_device_attr_group_tbl[ALS],
|
|
.event_attrs = &tsl2X7X_event_attr_group_tbl[ALS],
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = &tsl2x7x_read_raw,
|
|
.write_raw = &tsl2x7x_write_raw,
|
|
.read_event_value = &tsl2x7x_read_event_value,
|
|
.write_event_value = &tsl2x7x_write_event_value,
|
|
.read_event_config = &tsl2x7x_read_interrupt_config,
|
|
.write_event_config = &tsl2x7x_write_interrupt_config,
|
|
},
|
|
[PRX] = {
|
|
.attrs = &tsl2X7X_device_attr_group_tbl[PRX],
|
|
.event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = &tsl2x7x_read_raw,
|
|
.write_raw = &tsl2x7x_write_raw,
|
|
.read_event_value = &tsl2x7x_read_event_value,
|
|
.write_event_value = &tsl2x7x_write_event_value,
|
|
.read_event_config = &tsl2x7x_read_interrupt_config,
|
|
.write_event_config = &tsl2x7x_write_interrupt_config,
|
|
},
|
|
[ALSPRX] = {
|
|
.attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX],
|
|
.event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = &tsl2x7x_read_raw,
|
|
.write_raw = &tsl2x7x_write_raw,
|
|
.read_event_value = &tsl2x7x_read_event_value,
|
|
.write_event_value = &tsl2x7x_write_event_value,
|
|
.read_event_config = &tsl2x7x_read_interrupt_config,
|
|
.write_event_config = &tsl2x7x_write_interrupt_config,
|
|
},
|
|
[PRX2] = {
|
|
.attrs = &tsl2X7X_device_attr_group_tbl[PRX2],
|
|
.event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = &tsl2x7x_read_raw,
|
|
.write_raw = &tsl2x7x_write_raw,
|
|
.read_event_value = &tsl2x7x_read_event_value,
|
|
.write_event_value = &tsl2x7x_write_event_value,
|
|
.read_event_config = &tsl2x7x_read_interrupt_config,
|
|
.write_event_config = &tsl2x7x_write_interrupt_config,
|
|
},
|
|
[ALSPRX2] = {
|
|
.attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
|
|
.event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
|
|
.driver_module = THIS_MODULE,
|
|
.read_raw = &tsl2x7x_read_raw,
|
|
.write_raw = &tsl2x7x_write_raw,
|
|
.read_event_value = &tsl2x7x_read_event_value,
|
|
.write_event_value = &tsl2x7x_write_event_value,
|
|
.read_event_config = &tsl2x7x_read_interrupt_config,
|
|
.write_event_config = &tsl2x7x_write_interrupt_config,
|
|
},
|
|
};
|
|
|
|
static const struct iio_event_spec tsl2x7x_events[] = {
|
|
{
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_RISING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
|
|
BIT(IIO_EV_INFO_ENABLE),
|
|
}, {
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_FALLING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
|
|
BIT(IIO_EV_INFO_ENABLE),
|
|
},
|
|
};
|
|
|
|
static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
|
|
[ALS] = {
|
|
.channel = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
},
|
|
},
|
|
.chan_table_elements = 3,
|
|
.info = &tsl2X7X_device_info[ALS],
|
|
},
|
|
[PRX] = {
|
|
.channel = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
},
|
|
},
|
|
.chan_table_elements = 1,
|
|
.info = &tsl2X7X_device_info[PRX],
|
|
},
|
|
[ALSPRX] = {
|
|
.channel = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED)
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
},
|
|
},
|
|
.chan_table_elements = 4,
|
|
.info = &tsl2X7X_device_info[ALSPRX],
|
|
},
|
|
[PRX2] = {
|
|
.channel = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
},
|
|
},
|
|
.chan_table_elements = 1,
|
|
.info = &tsl2X7X_device_info[PRX2],
|
|
},
|
|
[ALSPRX2] = {
|
|
.channel = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2x7x_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
|
|
},
|
|
},
|
|
.chan_table_elements = 4,
|
|
.info = &tsl2X7X_device_info[ALSPRX2],
|
|
},
|
|
};
|
|
|
|
static int tsl2x7x_probe(struct i2c_client *clientp,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int ret;
|
|
struct iio_dev *indio_dev;
|
|
struct tsl2X7X_chip *chip;
|
|
|
|
indio_dev = devm_iio_device_alloc(&clientp->dev, sizeof(*chip));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
chip = iio_priv(indio_dev);
|
|
chip->client = clientp;
|
|
i2c_set_clientdata(clientp, indio_dev);
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2X7X_CMD_REG | TSL2X7X_CHIPID);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if ((!tsl2x7x_device_id(&ret, id->driver_data)) ||
|
|
(tsl2x7x_device_id(&ret, id->driver_data) == -EINVAL)) {
|
|
dev_info(&chip->client->dev,
|
|
"%s: i2c device found does not match expected id\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
|
|
if (ret < 0) {
|
|
dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* ALS and PROX functions can be invoked via user space poll
|
|
* or H/W interrupt. If busy return last sample.
|
|
*/
|
|
mutex_init(&chip->als_mutex);
|
|
mutex_init(&chip->prox_mutex);
|
|
|
|
chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN;
|
|
chip->pdata = dev_get_platdata(&clientp->dev);
|
|
chip->id = id->driver_data;
|
|
chip->chip_info =
|
|
&tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]];
|
|
|
|
indio_dev->info = chip->chip_info->info;
|
|
indio_dev->dev.parent = &clientp->dev;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->name = chip->client->name;
|
|
indio_dev->channels = chip->chip_info->channel;
|
|
indio_dev->num_channels = chip->chip_info->chan_table_elements;
|
|
|
|
if (clientp->irq) {
|
|
ret = devm_request_threaded_irq(&clientp->dev, clientp->irq,
|
|
NULL,
|
|
&tsl2x7x_event_handler,
|
|
IRQF_TRIGGER_RISING |
|
|
IRQF_ONESHOT,
|
|
"TSL2X7X_event",
|
|
indio_dev);
|
|
if (ret) {
|
|
dev_err(&clientp->dev,
|
|
"%s: irq request failed", __func__);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Load up the defaults */
|
|
tsl2x7x_defaults(chip);
|
|
/* Make sure the chip is on */
|
|
tsl2x7x_chip_on(indio_dev);
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret) {
|
|
dev_err(&clientp->dev,
|
|
"%s: iio registration failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsl2x7x_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret = 0;
|
|
|
|
if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
|
|
ret = tsl2x7x_chip_off(indio_dev);
|
|
chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
|
|
}
|
|
|
|
if (chip->pdata && chip->pdata->platform_power) {
|
|
pm_message_t pmm = {PM_EVENT_SUSPEND};
|
|
|
|
chip->pdata->platform_power(dev, pmm);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
|
|
int ret = 0;
|
|
|
|
if (chip->pdata && chip->pdata->platform_power) {
|
|
pm_message_t pmm = {PM_EVENT_RESUME};
|
|
|
|
chip->pdata->platform_power(dev, pmm);
|
|
}
|
|
|
|
if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED)
|
|
ret = tsl2x7x_chip_on(indio_dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2x7x_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
|
|
tsl2x7x_chip_off(indio_dev);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_device_id tsl2x7x_idtable[] = {
|
|
{ "tsl2571", tsl2571 },
|
|
{ "tsl2671", tsl2671 },
|
|
{ "tmd2671", tmd2671 },
|
|
{ "tsl2771", tsl2771 },
|
|
{ "tmd2771", tmd2771 },
|
|
{ "tsl2572", tsl2572 },
|
|
{ "tsl2672", tsl2672 },
|
|
{ "tmd2672", tmd2672 },
|
|
{ "tsl2772", tsl2772 },
|
|
{ "tmd2772", tmd2772 },
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable);
|
|
|
|
static const struct of_device_id tsl2x7x_of_match[] = {
|
|
{ .compatible = "amstaos,tsl2571" },
|
|
{ .compatible = "amstaos,tsl2671" },
|
|
{ .compatible = "amstaos,tmd2671" },
|
|
{ .compatible = "amstaos,tsl2771" },
|
|
{ .compatible = "amstaos,tmd2771" },
|
|
{ .compatible = "amstaos,tsl2572" },
|
|
{ .compatible = "amstaos,tsl2672" },
|
|
{ .compatible = "amstaos,tmd2672" },
|
|
{ .compatible = "amstaos,tsl2772" },
|
|
{ .compatible = "amstaos,tmd2772" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tsl2x7x_of_match);
|
|
|
|
static const struct dev_pm_ops tsl2x7x_pm_ops = {
|
|
.suspend = tsl2x7x_suspend,
|
|
.resume = tsl2x7x_resume,
|
|
};
|
|
|
|
/* Driver definition */
|
|
static struct i2c_driver tsl2x7x_driver = {
|
|
.driver = {
|
|
.name = "tsl2x7x",
|
|
.of_match_table = tsl2x7x_of_match,
|
|
.pm = &tsl2x7x_pm_ops,
|
|
},
|
|
.id_table = tsl2x7x_idtable,
|
|
.probe = tsl2x7x_probe,
|
|
.remove = tsl2x7x_remove,
|
|
};
|
|
|
|
module_i2c_driver(tsl2x7x_driver);
|
|
|
|
MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
|
|
MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver");
|
|
MODULE_LICENSE("GPL");
|