#include <linux/iio/sysfs.h>
/* Device Registers and Masks */
-#define TSL258X_CNTRL 0x00
-#define TSL258X_ALS_TIME 0X01
-#define TSL258X_INTERRUPT 0x02
-#define TSL258X_GAIN 0x07
-#define TSL258X_REVID 0x11
-#define TSL258X_CHIPID 0x12
-#define TSL258X_ALS_CHAN0LO 0x14
-#define TSL258X_ALS_CHAN0HI 0x15
-#define TSL258X_ALS_CHAN1LO 0x16
-#define TSL258X_ALS_CHAN1HI 0x17
-#define TSL258X_TMR_LO 0x18
-#define TSL258X_TMR_HI 0x19
+#define TSL2583_CNTRL 0x00
+#define TSL2583_ALS_TIME 0X01
+#define TSL2583_INTERRUPT 0x02
+#define TSL2583_GAIN 0x07
+#define TSL2583_REVID 0x11
+#define TSL2583_CHIPID 0x12
+#define TSL2583_ALS_CHAN0LO 0x14
+#define TSL2583_ALS_CHAN0HI 0x15
+#define TSL2583_ALS_CHAN1LO 0x16
+#define TSL2583_ALS_CHAN1HI 0x17
+#define TSL2583_TMR_LO 0x18
+#define TSL2583_TMR_HI 0x19
/* tsl2583 cmd reg masks */
-#define TSL258X_CMD_REG 0x80
-#define TSL258X_CMD_SPL_FN 0x60
-#define TSL258X_CMD_ALS_INT_CLR 0X01
+#define TSL2583_CMD_REG 0x80
+#define TSL2583_CMD_SPL_FN 0x60
+#define TSL2583_CMD_ALS_INT_CLR 0X01
/* tsl2583 cntrl reg masks */
-#define TSL258X_CNTL_ADC_ENBL 0x02
-#define TSL258X_CNTL_PWR_OFF 0x00
-#define TSL258X_CNTL_PWR_ON 0x01
+#define TSL2583_CNTL_ADC_ENBL 0x02
+#define TSL2583_CNTL_PWR_OFF 0x00
+#define TSL2583_CNTL_PWR_ON 0x01
/* tsl2583 status reg masks */
-#define TSL258X_STA_ADC_VALID 0x01
-#define TSL258X_STA_ADC_INTR 0x10
+#define TSL2583_STA_ADC_VALID 0x01
+#define TSL2583_STA_ADC_INTR 0x10
/* Lux calculation constants */
-#define TSL258X_LUX_CALC_OVER_FLOW 65535
+#define TSL2583_LUX_CALC_OVER_FLOW 65535
#define TSL2583_INTERRUPT_DISABLED 0x00
#define TSL2583_CHIP_ID_MASK 0xf0
/* Per-device data */
-struct taos_als_info {
+struct tsl2583_als_info {
u16 als_ch0;
u16 als_ch1;
u16 lux;
};
-struct taos_settings {
+struct tsl2583_settings {
int als_time;
int als_gain;
int als_gain_trim;
struct tsl2583_chip {
struct mutex als_mutex;
struct i2c_client *client;
- struct taos_als_info als_cur_info;
- struct taos_settings taos_settings;
+ struct tsl2583_als_info als_cur_info;
+ struct tsl2583_settings als_settings;
int als_time_scale;
int als_saturation;
bool suspended;
};
-struct taos_lux {
+struct tsl2583_lux {
unsigned int ratio;
unsigned int ch0;
unsigned int ch1;
/* This structure is intentionally large to accommodate updates via sysfs. */
/* Sized to 11 = max 10 segments + 1 termination segment */
/* Assumption is one and only one type of glass used */
-static struct taos_lux taos_device_lux[11] = {
+static struct tsl2583_lux tsl2583_device_lux[11] = {
{ 9830, 8520, 15729 },
{ 12452, 10807, 23344 },
{ 14746, 6383, 11705 },
* Provides initial operational parameter defaults.
* These defaults may be changed through the device's sysfs files.
*/
-static void taos_defaults(struct tsl2583_chip *chip)
+static void tsl2583_defaults(struct tsl2583_chip *chip)
{
/*
* The integration time must be a multiple of 50ms and within the
* range [50, 600] ms.
*/
- chip->taos_settings.als_time = 100;
+ chip->als_settings.als_time = 100;
/*
* This is an index into the gainadj table. Assume clear glass as the
* default.
*/
- chip->taos_settings.als_gain = 0;
+ chip->als_settings.als_gain = 0;
/* Default gain trim to account for aperture effects */
- chip->taos_settings.als_gain_trim = 1000;
+ chip->als_settings.als_gain_trim = 1000;
/* Known external ALS reading used for calibration */
- chip->taos_settings.als_cal_target = 130;
+ chip->als_settings.als_cal_target = 130;
}
/*
* 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. The array taos_device_lux[]
+ * of ch1 value, to the ch0 value, is calculated. The array tsl2583_device_lux[]
* declared above 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 taos_get_lux(struct iio_dev *indio_dev)
+static int tsl2583_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[5];
- struct taos_lux *p;
+ struct tsl2583_lux *p;
struct tsl2583_chip *chip = iio_priv(indio_dev);
int i, ret;
u32 ch0lux = 0;
u32 ch1lux = 0;
- ret = i2c_smbus_read_byte_data(chip->client, TSL258X_CMD_REG);
+ ret = i2c_smbus_read_byte_data(chip->client, TSL2583_CMD_REG);
if (ret < 0) {
dev_err(&chip->client->dev, "%s: failed to read CMD_REG register\n",
__func__);
}
/* is data new & valid */
- if (!(ret & TSL258X_STA_ADC_INTR)) {
+ if (!(ret & TSL2583_STA_ADC_INTR)) {
dev_err(&chip->client->dev, "%s: data not valid; returning last value\n",
__func__);
ret = chip->als_cur_info.lux; /* return LAST VALUE */
}
for (i = 0; i < 4; i++) {
- int reg = TSL258X_CMD_REG | (TSL258X_ALS_CHAN0LO + i);
+ int reg = TSL2583_CMD_REG | (TSL2583_ALS_CHAN0LO + i);
ret = i2c_smbus_read_byte_data(chip->client, reg);
if (ret < 0) {
* we use the bit anyway - don't forget 0x80 - this is a command
*/
ret = i2c_smbus_write_byte(chip->client,
- (TSL258X_CMD_REG | TSL258X_CMD_SPL_FN |
- TSL258X_CMD_ALS_INT_CLR));
+ (TSL2583_CMD_REG | TSL2583_CMD_SPL_FN |
+ TSL2583_CMD_ALS_INT_CLR));
if (ret < 0) {
dev_err(&chip->client->dev, "%s: failed to clear the interrupt bit\n",
/* calculate ratio */
ratio = (ch1 << 15) / ch0;
/* convert to unscaled lux using the pointer to the table */
- for (p = (struct taos_lux *)taos_device_lux;
+ for (p = (struct tsl2583_lux *)tsl2583_device_lux;
p->ratio != 0 && p->ratio < ratio; p++)
;
lux = 0;
} else {
ch0lux = ((ch0 * p->ch0) +
- (gainadj[chip->taos_settings.als_gain].ch0 >> 1))
- / gainadj[chip->taos_settings.als_gain].ch0;
+ (gainadj[chip->als_settings.als_gain].ch0 >> 1))
+ / gainadj[chip->als_settings.als_gain].ch0;
ch1lux = ((ch1 * p->ch1) +
- (gainadj[chip->taos_settings.als_gain].ch1 >> 1))
- / gainadj[chip->taos_settings.als_gain].ch1;
+ (gainadj[chip->als_settings.als_gain].ch1 >> 1))
+ / gainadj[chip->als_settings.als_gain].ch1;
lux = ch0lux - ch1lux;
}
chip->als_time_scale;
/* Adjust for active gain scale.
- * The taos_device_lux tables above have a factor of 8192 built in,
+ * The tsl2583_device_lux tables above have a factor of 8192 built in,
* so we need to shift right.
* User-specified gain provides a multiplier.
* Apply user-specified gain before shifting right to retain precision.
* Then go back to 32 bits before division to avoid using div_u64().
*/
lux64 = lux;
- lux64 = lux64 * chip->taos_settings.als_gain_trim;
+ lux64 = lux64 * chip->als_settings.als_gain_trim;
lux64 >>= 13;
lux = lux64;
lux = (lux + 500) / 1000;
- if (lux > TSL258X_LUX_CALC_OVER_FLOW) { /* check for overflow */
+ if (lux > TSL2583_LUX_CALC_OVER_FLOW) { /* check for overflow */
return_max:
- lux = TSL258X_LUX_CALC_OVER_FLOW;
+ lux = TSL2583_LUX_CALC_OVER_FLOW;
}
/* Update the structure with the latest VALID lux. */
* to derive actual lux).
* Return updated gain_trim value.
*/
-static int taos_als_calibrate(struct iio_dev *indio_dev)
+static int tsl2583_als_calibrate(struct iio_dev *indio_dev)
{
struct tsl2583_chip *chip = iio_priv(indio_dev);
unsigned int gain_trim_val;
int lux_val;
ret = i2c_smbus_read_byte_data(chip->client,
- TSL258X_CMD_REG | TSL258X_CNTRL);
+ TSL2583_CMD_REG | TSL2583_CNTRL);
if (ret < 0) {
dev_err(&chip->client->dev,
"%s: failed to read from the CNTRL register\n",
return ret;
}
- if ((ret & (TSL258X_CNTL_ADC_ENBL | TSL258X_CNTL_PWR_ON))
- != (TSL258X_CNTL_ADC_ENBL | TSL258X_CNTL_PWR_ON)) {
+ if ((ret & (TSL2583_CNTL_ADC_ENBL | TSL2583_CNTL_PWR_ON))
+ != (TSL2583_CNTL_ADC_ENBL | TSL2583_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 & TSL258X_STA_ADC_VALID) != TSL258X_STA_ADC_VALID) {
+ } else if ((ret & TSL2583_STA_ADC_VALID) != TSL2583_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 = taos_get_lux(indio_dev);
+ lux_val = tsl2583_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 = (unsigned int)(((chip->taos_settings.als_cal_target)
- * chip->taos_settings.als_gain_trim) / lux_val);
+ gain_trim_val = (unsigned int)(((chip->als_settings.als_cal_target)
+ * chip->als_settings.als_gain_trim) / lux_val);
if ((gain_trim_val < 250) || (gain_trim_val > 4000)) {
dev_err(&chip->client->dev,
__func__, gain_trim_val);
return -ENODATA;
}
- chip->taos_settings.als_gain_trim = (int)gain_trim_val;
+ chip->als_settings.als_gain_trim = (int)gain_trim_val;
return (int)gain_trim_val;
}
u8 val;
/* determine als integration register */
- als_count = (chip->taos_settings.als_time * 100 + 135) / 270;
+ als_count = (chip->als_settings.als_time * 100 + 135) / 270;
if (!als_count)
als_count = 1; /* ensure at least one cycle */
val = 256 - als_count;
ret = i2c_smbus_write_byte_data(chip->client,
- TSL258X_CMD_REG | TSL258X_ALS_TIME,
+ TSL2583_CMD_REG | TSL2583_ALS_TIME,
val);
if (ret < 0) {
dev_err(&chip->client->dev, "%s: failed to set the als time to %d\n",
{
int ret;
- /* Set the gain based on taos_settings struct */
+ /* Set the gain based on als_settings struct */
ret = i2c_smbus_write_byte_data(chip->client,
- TSL258X_CMD_REG | TSL258X_GAIN,
- chip->taos_settings.als_gain);
+ TSL2583_CMD_REG | TSL2583_GAIN,
+ chip->als_settings.als_gain);
if (ret < 0)
dev_err(&chip->client->dev,
"%s: failed to set the gain to %d\n", __func__,
- chip->taos_settings.als_gain);
+ chip->als_settings.als_gain);
return ret;
}
int ret;
ret = i2c_smbus_write_byte_data(chip->client,
- TSL258X_CMD_REG | TSL258X_CNTRL, state);
+ TSL2583_CMD_REG | TSL2583_CNTRL, state);
if (ret < 0)
dev_err(&chip->client->dev,
"%s: failed to set the power state to %d\n", __func__,
int ret;
/* Power on the device; ADC off. */
- ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_ON);
+ ret = tsl2583_set_power_state(chip, TSL2583_CNTL_PWR_ON);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(chip->client,
- TSL258X_CMD_REG | TSL258X_INTERRUPT,
+ TSL2583_CMD_REG | TSL2583_INTERRUPT,
TSL2583_INTERRUPT_DISABLED);
if (ret < 0) {
dev_err(&chip->client->dev,
usleep_range(3000, 3500);
- ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_ON |
- TSL258X_CNTL_ADC_ENBL);
+ ret = tsl2583_set_power_state(chip, TSL2583_CNTL_PWR_ON |
+ TSL2583_CNTL_ADC_ENBL);
if (ret < 0)
return ret;
int ret;
mutex_lock(&chip->als_mutex);
- ret = sprintf(buf, "%d\n", chip->taos_settings.als_cal_target);
+ ret = sprintf(buf, "%d\n", chip->als_settings.als_cal_target);
mutex_unlock(&chip->als_mutex);
return ret;
return -EINVAL;
mutex_lock(&chip->als_mutex);
- chip->taos_settings.als_cal_target = value;
+ chip->als_settings.als_cal_target = value;
mutex_unlock(&chip->als_mutex);
return len;
goto done;
}
- ret = taos_als_calibrate(indio_dev);
+ ret = tsl2583_als_calibrate(indio_dev);
if (ret < 0)
goto done;
int i;
int offset = 0;
- for (i = 0; i < ARRAY_SIZE(taos_device_lux); i++) {
+ for (i = 0; i < ARRAY_SIZE(tsl2583_device_lux); i++) {
offset += sprintf(buf + offset, "%u,%u,%u,",
- taos_device_lux[i].ratio,
- taos_device_lux[i].ch0,
- taos_device_lux[i].ch1);
- if (taos_device_lux[i].ratio == 0) {
+ tsl2583_device_lux[i].ratio,
+ tsl2583_device_lux[i].ch0,
+ tsl2583_device_lux[i].ch1);
+ if (tsl2583_device_lux[i].ratio == 0) {
/*
* We just printed the first "0" entry.
* Now get rid of the extra "," and break.
return offset;
}
-#define TSL2583_MAX_LUX_INTS ((ARRAY_SIZE(taos_device_lux) - 1) * 3)
+#define TSL2583_MAX_LUX_INTS ((ARRAY_SIZE(tsl2583_device_lux) - 1) * 3)
static ssize_t in_illuminance_lux_table_store(struct device *dev,
struct device_attribute *attr,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct tsl2583_chip *chip = iio_priv(indio_dev);
- int value[ARRAY_SIZE(taos_device_lux) * 3 + 1];
+ int value[ARRAY_SIZE(tsl2583_device_lux) * 3 + 1];
int n, ret = -EINVAL;
mutex_lock(&chip->als_mutex);
}
/* Zero out the table */
- memset(taos_device_lux, 0, sizeof(taos_device_lux));
- memcpy(taos_device_lux, &value[1], (value[0] * 4));
+ memset(tsl2583_device_lux, 0, sizeof(tsl2583_device_lux));
+ memcpy(tsl2583_device_lux, &value[1], (value[0] * 4));
ret = len;
switch (mask) {
case IIO_CHAN_INFO_RAW:
if (chan->type == IIO_LIGHT) {
- ret = taos_get_lux(indio_dev);
+ ret = tsl2583_get_lux(indio_dev);
if (ret < 0)
goto read_done;
break;
case IIO_CHAN_INFO_PROCESSED:
if (chan->type == IIO_LIGHT) {
- ret = taos_get_lux(indio_dev);
+ ret = tsl2583_get_lux(indio_dev);
if (ret < 0)
goto read_done;
break;
case IIO_CHAN_INFO_CALIBBIAS:
if (chan->type == IIO_LIGHT) {
- *val = chip->taos_settings.als_gain_trim;
+ *val = chip->als_settings.als_gain_trim;
ret = IIO_VAL_INT;
}
break;
case IIO_CHAN_INFO_CALIBSCALE:
if (chan->type == IIO_LIGHT) {
- *val = gainadj[chip->taos_settings.als_gain].mean;
+ *val = gainadj[chip->als_settings.als_gain].mean;
ret = IIO_VAL_INT;
}
break;
case IIO_CHAN_INFO_INT_TIME:
if (chan->type == IIO_LIGHT) {
*val = 0;
- *val2 = chip->taos_settings.als_time;
+ *val2 = chip->als_settings.als_time;
ret = IIO_VAL_INT_PLUS_MICRO;
}
break;
switch (mask) {
case IIO_CHAN_INFO_CALIBBIAS:
if (chan->type == IIO_LIGHT) {
- chip->taos_settings.als_gain_trim = val;
+ chip->als_settings.als_gain_trim = val;
ret = 0;
}
break;
for (i = 0; i < ARRAY_SIZE(gainadj); i++) {
if (gainadj[i].mean == val) {
- chip->taos_settings.als_gain = i;
+ chip->als_settings.als_gain = i;
ret = tsl2583_set_als_gain(chip);
break;
}
case IIO_CHAN_INFO_INT_TIME:
if (chan->type == IIO_LIGHT && !val && val2 >= 50 &&
val2 <= 650 && !(val2 % 50)) {
- chip->taos_settings.als_time = val2;
+ chip->als_settings.als_time = val2;
ret = tsl2583_set_als_time(chip);
}
break;
* Client probe function - When a valid device is found, the driver's device
* data structure is updated, and initialization completes successfully.
*/
-static int taos_probe(struct i2c_client *clientp,
- const struct i2c_device_id *idp)
+static int tsl2583_probe(struct i2c_client *clientp,
+ const struct i2c_device_id *idp)
{
int ret;
struct tsl2583_chip *chip;
chip->suspended = true;
ret = i2c_smbus_read_byte_data(clientp,
- TSL258X_CMD_REG | TSL258X_CHIPID);
+ TSL2583_CMD_REG | TSL2583_CHIPID);
if (ret < 0) {
dev_err(&clientp->dev,
"%s: failed to read the chip ID register\n", __func__);
}
/* Load up the V2 defaults (these are hard coded defaults for now) */
- taos_defaults(chip);
+ tsl2583_defaults(chip);
/* Make sure the chip is on */
ret = tsl2583_chip_init_and_power_on(indio_dev);
return 0;
}
-static int __maybe_unused taos_suspend(struct device *dev)
+static int __maybe_unused tsl2583_suspend(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct tsl2583_chip *chip = iio_priv(indio_dev);
mutex_lock(&chip->als_mutex);
- ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_OFF);
+ ret = tsl2583_set_power_state(chip, TSL2583_CNTL_PWR_OFF);
chip->suspended = true;
mutex_unlock(&chip->als_mutex);
return ret;
}
-static int __maybe_unused taos_resume(struct device *dev)
+static int __maybe_unused tsl2583_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct tsl2583_chip *chip = iio_priv(indio_dev);
return ret;
}
-static SIMPLE_DEV_PM_OPS(taos_pm_ops, taos_suspend, taos_resume);
+static SIMPLE_DEV_PM_OPS(tsl2583_pm_ops, tsl2583_suspend, tsl2583_resume);
-static struct i2c_device_id taos_idtable[] = {
+static struct i2c_device_id tsl2583_idtable[] = {
{ "tsl2580", 0 },
{ "tsl2581", 1 },
{ "tsl2583", 2 },
{}
};
-MODULE_DEVICE_TABLE(i2c, taos_idtable);
+MODULE_DEVICE_TABLE(i2c, tsl2583_idtable);
-static const struct of_device_id taos2583_of_match[] = {
+static const struct of_device_id tsl2583_of_match[] = {
{ .compatible = "amstaos,tsl2580", },
{ .compatible = "amstaos,tsl2581", },
{ .compatible = "amstaos,tsl2583", },
{ },
};
-MODULE_DEVICE_TABLE(of, taos2583_of_match);
+MODULE_DEVICE_TABLE(of, tsl2583_of_match);
/* Driver definition */
-static struct i2c_driver taos_driver = {
+static struct i2c_driver tsl2583_driver = {
.driver = {
.name = "tsl2583",
- .pm = &taos_pm_ops,
- .of_match_table = taos2583_of_match,
+ .pm = &tsl2583_pm_ops,
+ .of_match_table = tsl2583_of_match,
},
- .id_table = taos_idtable,
- .probe = taos_probe,
+ .id_table = tsl2583_idtable,
+ .probe = tsl2583_probe,
};
-module_i2c_driver(taos_driver);
+module_i2c_driver(tsl2583_driver);
MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
MODULE_DESCRIPTION("TAOS tsl2583 ambient light sensor driver");
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff