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-rw-r--r--drivers/staging/iio/light/Kconfig37
-rw-r--r--drivers/staging/iio/light/Makefile2
-rw-r--r--drivers/staging/iio/light/isl29018.c199
-rw-r--r--drivers/staging/iio/light/isl29028.c566
-rw-r--r--drivers/staging/iio/light/tsl2563.c24
-rw-r--r--drivers/staging/iio/light/tsl2583.c8
-rwxr-xr-xdrivers/staging/iio/light/tsl2x7x.h100
-rwxr-xr-xdrivers/staging/iio/light/tsl2x7x_core.c2082
8 files changed, 2898 insertions, 120 deletions
diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig
index e7e9159d989..4bed30eac3e 100644
--- a/drivers/staging/iio/light/Kconfig
+++ b/drivers/staging/iio/light/Kconfig
@@ -4,15 +4,26 @@
menu "Light sensors"
config SENSORS_ISL29018
- tristate "ISL 29018 light and proximity sensor"
- depends on I2C
- default n
- help
- If you say yes here you get support for ambient light sensing and
- proximity infrared sensing from Intersil ISL29018.
- This driver will provide the measurements of ambient light intensity
- in lux, proximity infrared sensing and normal infrared sensing.
- Data from sensor is accessible via sysfs.
+ tristate "ISL 29018 light and proximity sensor"
+ depends on I2C
+ select REGMAP_I2C
+ default n
+ help
+ If you say yes here you get support for ambient light sensing and
+ proximity infrared sensing from Intersil ISL29018.
+ This driver will provide the measurements of ambient light intensity
+ in lux, proximity infrared sensing and normal infrared sensing.
+ Data from sensor is accessible via sysfs.
+
+config SENSORS_ISL29028
+ tristate "Intersil ISL29028 Concurrent Light and Proximity Sensor"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ Provides driver for the Intersil's ISL29028 device.
+ This driver supports the sysfs interface to get the ALS, IR intensity,
+ Proximity value via iio. The ISL29028 provides the concurrent sensing
+ of ambient light and proximity.
config SENSORS_TSL2563
tristate "TAOS TSL2560, TSL2561, TSL2562 and TSL2563 ambient light sensors"
@@ -31,4 +42,12 @@ config TSL2583
Provides support for the TAOS tsl2580, tsl2581 and tsl2583 devices.
Access ALS data via iio, sysfs.
+config TSL2x7x
+ tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors"
+ depends on I2C
+ help
+ Support for: tsl2571, tsl2671, tmd2671, tsl2771, tmd2771, tsl2572, tsl2672,
+ tmd2672, tsl2772, tmd2772 devices.
+ Provides iio_events and direct access via sysfs.
+
endmenu
diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile
index 3011fbfa8dc..141af1eb164 100644
--- a/drivers/staging/iio/light/Makefile
+++ b/drivers/staging/iio/light/Makefile
@@ -4,4 +4,6 @@
obj-$(CONFIG_SENSORS_TSL2563) += tsl2563.o
obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o
+obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o
obj-$(CONFIG_TSL2583) += tsl2583.o
+obj-$(CONFIG_TSL2x7x) += tsl2x7x_core.o
diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c
index 38ec52b65df..2d23c6afa28 100644
--- a/drivers/staging/iio/light/isl29018.c
+++ b/drivers/staging/iio/light/isl29018.c
@@ -26,9 +26,11 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/delay.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
-#include "../iio.h"
-#include "../sysfs.h"
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
#define CONVERSION_TIME_MS 100
#define ISL29018_REG_ADD_COMMAND1 0x00
@@ -51,49 +53,22 @@
#define ISL29018_REG_ADD_DATA_LSB 0x02
#define ISL29018_REG_ADD_DATA_MSB 0x03
-#define ISL29018_MAX_REGS (ISL29018_REG_ADD_DATA_MSB+1)
#define ISL29018_REG_TEST 0x08
#define ISL29018_TEST_SHIFT 0
#define ISL29018_TEST_MASK (0xFF << ISL29018_TEST_SHIFT)
struct isl29018_chip {
- struct i2c_client *client;
+ struct device *dev;
+ struct regmap *regmap;
struct mutex lock;
unsigned int lux_scale;
unsigned int range;
unsigned int adc_bit;
int prox_scheme;
- u8 reg_cache[ISL29018_MAX_REGS];
};
-static int isl29018_write_data(struct i2c_client *client, u8 reg,
- u8 val, u8 mask, u8 shift)
-{
- u8 regval = val;
- int ret;
- struct isl29018_chip *chip = iio_priv(i2c_get_clientdata(client));
-
- /* don't cache or mask REG_TEST */
- if (reg < ISL29018_MAX_REGS) {
- regval = chip->reg_cache[reg];
- regval &= ~mask;
- regval |= val << shift;
- }
-
- ret = i2c_smbus_write_byte_data(client, reg, regval);
- if (ret) {
- dev_err(&client->dev, "Write to device fails status %x\n", ret);
- } else {
- /* don't update cache on err */
- if (reg < ISL29018_MAX_REGS)
- chip->reg_cache[reg] = regval;
- }
-
- return ret;
-}
-
-static int isl29018_set_range(struct i2c_client *client, unsigned long range,
+static int isl29018_set_range(struct isl29018_chip *chip, unsigned long range,
unsigned int *new_range)
{
static const unsigned long supp_ranges[] = {1000, 4000, 16000, 64000};
@@ -109,11 +84,11 @@ static int isl29018_set_range(struct i2c_client *client, unsigned long range,
if (i >= ARRAY_SIZE(supp_ranges))
return -EINVAL;
- return isl29018_write_data(client, ISL29018_REG_ADD_COMMANDII,
- i, COMMANDII_RANGE_MASK, COMMANDII_RANGE_SHIFT);
+ return regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
+ COMMANDII_RANGE_MASK, i << COMMANDII_RANGE_SHIFT);
}
-static int isl29018_set_resolution(struct i2c_client *client,
+static int isl29018_set_resolution(struct isl29018_chip *chip,
unsigned long adcbit, unsigned int *conf_adc_bit)
{
static const unsigned long supp_adcbit[] = {16, 12, 8, 4};
@@ -129,48 +104,49 @@ static int isl29018_set_resolution(struct i2c_client *client,
if (i >= ARRAY_SIZE(supp_adcbit))
return -EINVAL;
- return isl29018_write_data(client, ISL29018_REG_ADD_COMMANDII,
- i, COMMANDII_RESOLUTION_MASK,
- COMMANDII_RESOLUTION_SHIFT);
+ return regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
+ COMMANDII_RESOLUTION_MASK,
+ i << COMMANDII_RESOLUTION_SHIFT);
}
-static int isl29018_read_sensor_input(struct i2c_client *client, int mode)
+static int isl29018_read_sensor_input(struct isl29018_chip *chip, int mode)
{
int status;
- int lsb;
- int msb;
+ unsigned int lsb;
+ unsigned int msb;
/* Set mode */
- status = isl29018_write_data(client, ISL29018_REG_ADD_COMMAND1,
- mode, COMMMAND1_OPMODE_MASK, COMMMAND1_OPMODE_SHIFT);
+ status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1,
+ mode << COMMMAND1_OPMODE_SHIFT);
if (status) {
- dev_err(&client->dev, "Error in setting operating mode\n");
+ dev_err(chip->dev,
+ "Error in setting operating mode err %d\n", status);
return status;
}
msleep(CONVERSION_TIME_MS);
- lsb = i2c_smbus_read_byte_data(client, ISL29018_REG_ADD_DATA_LSB);
- if (lsb < 0) {
- dev_err(&client->dev, "Error in reading LSB DATA\n");
- return lsb;
+ status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_LSB, &lsb);
+ if (status < 0) {
+ dev_err(chip->dev,
+ "Error in reading LSB DATA with err %d\n", status);
+ return status;
}
- msb = i2c_smbus_read_byte_data(client, ISL29018_REG_ADD_DATA_MSB);
- if (msb < 0) {
- dev_err(&client->dev, "Error in reading MSB DATA\n");
- return msb;
+ status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_MSB, &msb);
+ if (status < 0) {
+ dev_err(chip->dev,
+ "Error in reading MSB DATA with error %d\n", status);
+ return status;
}
- dev_vdbg(&client->dev, "MSB 0x%x and LSB 0x%x\n", msb, lsb);
+ dev_vdbg(chip->dev, "MSB 0x%x and LSB 0x%x\n", msb, lsb);
return (msb << 8) | lsb;
}
-static int isl29018_read_lux(struct i2c_client *client, int *lux)
+static int isl29018_read_lux(struct isl29018_chip *chip, int *lux)
{
int lux_data;
- struct isl29018_chip *chip = iio_priv(i2c_get_clientdata(client));
- lux_data = isl29018_read_sensor_input(client,
- COMMMAND1_OPMODE_ALS_ONCE);
+ lux_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_ALS_ONCE);
if (lux_data < 0)
return lux_data;
@@ -180,11 +156,11 @@ static int isl29018_read_lux(struct i2c_client *client, int *lux)
return 0;
}
-static int isl29018_read_ir(struct i2c_client *client, int *ir)
+static int isl29018_read_ir(struct isl29018_chip *chip, int *ir)
{
int ir_data;
- ir_data = isl29018_read_sensor_input(client, COMMMAND1_OPMODE_IR_ONCE);
+ ir_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_IR_ONCE);
if (ir_data < 0)
return ir_data;
@@ -194,7 +170,7 @@ static int isl29018_read_ir(struct i2c_client *client, int *ir)
return 0;
}
-static int isl29018_read_proximity_ir(struct i2c_client *client, int scheme,
+static int isl29018_read_proximity_ir(struct isl29018_chip *chip, int scheme,
int *near_ir)
{
int status;
@@ -202,14 +178,15 @@ static int isl29018_read_proximity_ir(struct i2c_client *client, int scheme,
int ir_data = -1;
/* Do proximity sensing with required scheme */
- status = isl29018_write_data(client, ISL29018_REG_ADD_COMMANDII,
- scheme, COMMANDII_SCHEME_MASK, COMMANDII_SCHEME_SHIFT);
+ status = regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
+ COMMANDII_SCHEME_MASK,
+ scheme << COMMANDII_SCHEME_SHIFT);
if (status) {
- dev_err(&client->dev, "Error in setting operating mode\n");
+ dev_err(chip->dev, "Error in setting operating mode\n");
return status;
}
- prox_data = isl29018_read_sensor_input(client,
+ prox_data = isl29018_read_sensor_input(chip,
COMMMAND1_OPMODE_PROX_ONCE);
if (prox_data < 0)
return prox_data;
@@ -219,8 +196,7 @@ static int isl29018_read_proximity_ir(struct i2c_client *client, int scheme,
return 0;
}
- ir_data = isl29018_read_sensor_input(client,
- COMMMAND1_OPMODE_IR_ONCE);
+ ir_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_IR_ONCE);
if (ir_data < 0)
return ir_data;
@@ -249,7 +225,6 @@ static ssize_t store_range(struct device *dev,
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
- struct i2c_client *client = chip->client;
int status;
unsigned long lval;
unsigned int new_range;
@@ -264,10 +239,11 @@ static ssize_t store_range(struct device *dev,
}
mutex_lock(&chip->lock);
- status = isl29018_set_range(client, lval, &new_range);
+ status = isl29018_set_range(chip, lval, &new_range);
if (status < 0) {
mutex_unlock(&chip->lock);
- dev_err(dev, "Error in setting max range\n");
+ dev_err(dev,
+ "Error in setting max range with err %d\n", status);
return status;
}
chip->range = new_range;
@@ -291,7 +267,6 @@ static ssize_t store_resolution(struct device *dev,
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
- struct i2c_client *client = chip->client;
int status;
unsigned long lval;
unsigned int new_adc_bit;
@@ -304,7 +279,7 @@ static ssize_t store_resolution(struct device *dev,
}
mutex_lock(&chip->lock);
- status = isl29018_set_resolution(client, lval, &new_adc_bit);
+ status = isl29018_set_resolution(chip, lval, &new_adc_bit);
if (status < 0) {
mutex_unlock(&chip->lock);
dev_err(dev, "Error in setting resolution\n");
@@ -379,20 +354,20 @@ static int isl29018_read_raw(struct iio_dev *indio_dev,
{
int ret = -EINVAL;
struct isl29018_chip *chip = iio_priv(indio_dev);
- struct i2c_client *client = chip->client;
mutex_lock(&chip->lock);
switch (mask) {
- case 0:
+ case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_LIGHT:
- ret = isl29018_read_lux(client, val);
+ ret = isl29018_read_lux(chip, val);
break;
case IIO_INTENSITY:
- ret = isl29018_read_ir(client, val);
+ ret = isl29018_read_ir(chip, val);
break;
case IIO_PROXIMITY:
- ret = isl29018_read_proximity_ir(client,
+ ret = isl29018_read_proximity_ir(chip,
chip->prox_scheme, val);
break;
default:
@@ -419,15 +394,17 @@ static const struct iio_chan_spec isl29018_channels[] = {
.type = IIO_LIGHT,
.indexed = 1,
.channel = 0,
- .processed_val = IIO_PROCESSED,
- .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
}, {
.type = IIO_INTENSITY,
.modified = 1,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
.channel2 = IIO_MOD_LIGHT_IR,
}, {
/* Unindexed in current ABI. But perhaps it should be. */
.type = IIO_PROXIMITY,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
}
};
@@ -456,15 +433,12 @@ static const struct attribute_group isl29108_group = {
.attrs = isl29018_attributes,
};
-static int isl29018_chip_init(struct i2c_client *client)
+static int isl29018_chip_init(struct isl29018_chip *chip)
{
- struct isl29018_chip *chip = iio_priv(i2c_get_clientdata(client));
int status;
int new_adc_bit;
unsigned int new_range;
- memset(chip->reg_cache, 0, sizeof(chip->reg_cache));
-
/* Code added per Intersil Application Note 1534:
* When VDD sinks to approximately 1.8V or below, some of
* the part's registers may change their state. When VDD
@@ -485,10 +459,9 @@ static int isl29018_chip_init(struct i2c_client *client)
* the same thing EXCEPT the data sheet asks for a 1ms delay after
* writing the CMD1 register.
*/
- status = isl29018_write_data(client, ISL29018_REG_TEST, 0,
- ISL29018_TEST_MASK, ISL29018_TEST_SHIFT);
+ status = regmap_write(chip->regmap, ISL29018_REG_TEST, 0x0);
if (status < 0) {
- dev_err(&client->dev, "Failed to clear isl29018 TEST reg."
+ dev_err(chip->dev, "Failed to clear isl29018 TEST reg."
"(%d)\n", status);
return status;
}
@@ -497,10 +470,9 @@ static int isl29018_chip_init(struct i2c_client *client)
* "Operating Mode" (COMMAND1) register is reprogrammed when
* data is read from the device.
*/
- status = isl29018_write_data(client, ISL29018_REG_ADD_COMMAND1, 0,
- 0xff, 0);
+ status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1, 0);
if (status < 0) {
- dev_err(&client->dev, "Failed to clear isl29018 CMD1 reg."
+ dev_err(chip->dev, "Failed to clear isl29018 CMD1 reg."
"(%d)\n", status);
return status;
}
@@ -508,13 +480,13 @@ static int isl29018_chip_init(struct i2c_client *client)
msleep(1); /* per data sheet, page 10 */
/* set defaults */
- status = isl29018_set_range(client, chip->range, &new_range);
+ status = isl29018_set_range(chip, chip->range, &new_range);
if (status < 0) {
- dev_err(&client->dev, "Init of isl29018 fails\n");
+ dev_err(chip->dev, "Init of isl29018 fails\n");
return status;
}
- status = isl29018_set_resolution(client, chip->adc_bit,
+ status = isl29018_set_resolution(chip, chip->adc_bit,
&new_adc_bit);
return 0;
@@ -527,6 +499,32 @@ static const struct iio_info isl29108_info = {
.write_raw = &isl29018_write_raw,
};
+static bool is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ISL29018_REG_ADD_DATA_LSB:
+ case ISL29018_REG_ADD_DATA_MSB:
+ case ISL29018_REG_ADD_COMMAND1:
+ case ISL29018_REG_TEST:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/*
+ * isl29018_regmap_config: regmap configuration.
+ * Use RBTREE mechanism for caching.
+ */
+static const struct regmap_config isl29018_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_reg = is_volatile_reg,
+ .max_register = ISL29018_REG_TEST,
+ .num_reg_defaults_raw = ISL29018_REG_TEST + 1,
+ .cache_type = REGCACHE_RBTREE,
+};
+
static int __devinit isl29018_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -534,7 +532,7 @@ static int __devinit isl29018_probe(struct i2c_client *client,
struct iio_dev *indio_dev;
int err;
- indio_dev = iio_allocate_device(sizeof(*chip));
+ indio_dev = iio_device_alloc(sizeof(*chip));
if (indio_dev == NULL) {
dev_err(&client->dev, "iio allocation fails\n");
err = -ENOMEM;
@@ -543,7 +541,7 @@ static int __devinit isl29018_probe(struct i2c_client *client,
chip = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
- chip->client = client;
+ chip->dev = &client->dev;
mutex_init(&chip->lock);
@@ -551,7 +549,14 @@ static int __devinit isl29018_probe(struct i2c_client *client,
chip->range = 1000;
chip->adc_bit = 16;
- err = isl29018_chip_init(client);
+ chip->regmap = devm_regmap_init_i2c(client, &isl29018_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ err = PTR_ERR(chip->regmap);
+ dev_err(chip->dev, "regmap initialization failed: %d\n", err);
+ goto exit;
+ }
+
+ err = isl29018_chip_init(chip);
if (err)
goto exit_iio_free;
@@ -569,7 +574,7 @@ static int __devinit isl29018_probe(struct i2c_client *client,
return 0;
exit_iio_free:
- iio_free_device(indio_dev);
+ iio_device_free(indio_dev);
exit:
return err;
}
@@ -580,7 +585,7 @@ static int __devexit isl29018_remove(struct i2c_client *client)
dev_dbg(&client->dev, "%s()\n", __func__);
iio_device_unregister(indio_dev);
- iio_free_device(indio_dev);
+ iio_device_free(indio_dev);
return 0;
}
@@ -593,7 +598,7 @@ static const struct i2c_device_id isl29018_id[] = {
MODULE_DEVICE_TABLE(i2c, isl29018_id);
static const struct of_device_id isl29018_of_match[] = {
- { .compatible = "invn,isl29018", },
+ { .compatible = "isil,isl29018", },
{ },
};
MODULE_DEVICE_TABLE(of, isl29018_of_match);
diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c
new file mode 100644
index 00000000000..33a4c3f94a1
--- /dev/null
+++ b/drivers/staging/iio/light/isl29028.c
@@ -0,0 +1,566 @@
+/*
+ * IIO driver for the light sensor ISL29028.
+ * ISL29028 is Concurrent Ambient Light and Proximity Sensor
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#define CONVERSION_TIME_MS 100
+
+#define ISL29028_REG_CONFIGURE 0x01
+
+#define CONFIGURE_ALS_IR_MODE_ALS 0
+#define CONFIGURE_ALS_IR_MODE_IR BIT(0)
+#define CONFIGURE_ALS_IR_MODE_MASK BIT(0)
+
+#define CONFIGURE_ALS_RANGE_LOW_LUX 0
+#define CONFIGURE_ALS_RANGE_HIGH_LUX BIT(1)
+#define CONFIGURE_ALS_RANGE_MASK BIT(1)
+
+#define CONFIGURE_ALS_DIS 0
+#define CONFIGURE_ALS_EN BIT(2)
+#define CONFIGURE_ALS_EN_MASK BIT(2)
+
+#define CONFIGURE_PROX_DRIVE BIT(3)
+
+#define CONFIGURE_PROX_SLP_SH 4
+#define CONFIGURE_PROX_SLP_MASK (7 << CONFIGURE_PROX_SLP_SH)
+
+#define CONFIGURE_PROX_EN BIT(7)
+#define CONFIGURE_PROX_EN_MASK BIT(7)
+
+#define ISL29028_REG_INTERRUPT 0x02
+
+#define ISL29028_REG_PROX_DATA 0x08
+#define ISL29028_REG_ALSIR_L 0x09
+#define ISL29028_REG_ALSIR_U 0x0A
+
+#define ISL29028_REG_TEST1_MODE 0x0E
+#define ISL29028_REG_TEST2_MODE 0x0F
+
+#define ISL29028_NUM_REGS (ISL29028_REG_TEST2_MODE + 1)
+
+enum als_ir_mode {
+ MODE_NONE = 0,
+ MODE_ALS,
+ MODE_IR
+};
+
+struct isl29028_chip {
+ struct device *dev;
+ struct mutex lock;
+ struct regmap *regmap;
+
+ unsigned int prox_sampling;
+ bool enable_prox;
+
+ int lux_scale;
+ int als_ir_mode;
+};
+
+static int isl29028_set_proxim_sampling(struct isl29028_chip *chip,
+ unsigned int sampling)
+{
+ static unsigned int prox_period[] = {800, 400, 200, 100, 75, 50, 12, 0};
+ int sel;
+ unsigned int period = DIV_ROUND_UP(1000, sampling);
+
+ for (sel = 0; sel < ARRAY_SIZE(prox_period); ++sel) {
+ if (period >= prox_period[sel])
+ break;
+ }
+ return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_PROX_SLP_MASK, sel << CONFIGURE_PROX_SLP_SH);
+}
+
+static int isl29028_enable_proximity(struct isl29028_chip *chip, bool enable)
+{
+ int ret;
+ int val = 0;
+
+ if (enable)
+ val = CONFIGURE_PROX_EN;
+ ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_PROX_EN_MASK, val);
+ if (ret < 0)
+ return ret;
+
+ /* Wait for conversion to be complete for first sample */
+ mdelay(DIV_ROUND_UP(1000, chip->prox_sampling));
+ return 0;
+}
+
+static int isl29028_set_als_scale(struct isl29028_chip *chip, int lux_scale)
+{
+ int val = (lux_scale == 2000) ? CONFIGURE_ALS_RANGE_HIGH_LUX :
+ CONFIGURE_ALS_RANGE_LOW_LUX;
+
+ return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_RANGE_MASK, val);
+}
+
+static int isl29028_set_als_ir_mode(struct isl29028_chip *chip,
+ enum als_ir_mode mode)
+{
+ int ret = 0;
+
+ switch (mode) {
+ case MODE_ALS:
+ ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_IR_MODE_MASK, CONFIGURE_ALS_IR_MODE_ALS);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_RANGE_MASK, CONFIGURE_ALS_RANGE_HIGH_LUX);
+ break;
+
+ case MODE_IR:
+ ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_IR_MODE_MASK, CONFIGURE_ALS_IR_MODE_IR);
+ break;
+
+ case MODE_NONE:
+ return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_EN_MASK, CONFIGURE_ALS_DIS);
+ }
+
+ if (ret < 0)
+ return ret;
+
+ /* Enable the ALS/IR */
+ ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+ CONFIGURE_ALS_EN_MASK, CONFIGURE_ALS_EN);
+ if (ret < 0)
+ return ret;
+
+ /* Need to wait for conversion time if ALS/IR mode enabled */
+ mdelay(CONVERSION_TIME_MS);
+ return 0;
+}
+
+static int isl29028_read_als_ir(struct isl29028_chip *chip, int *als_ir)
+{
+ unsigned int lsb;
+ unsigned int msb;
+ int ret;
+
+ ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_L, &lsb);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Error in reading register ALSIR_L err %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_U, &msb);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Error in reading register ALSIR_U err %d\n", ret);
+ return ret;
+ }
+
+ *als_ir = ((msb & 0xF) << 8) | (lsb & 0xFF);
+ return 0;
+}
+
+static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox)
+{
+ unsigned int data;
+ int ret;
+
+ ret = regmap_read(chip->regmap, ISL29028_REG_PROX_DATA, &data);
+ if (ret < 0) {
+ dev_err(chip->dev, "Error in reading register %d, error %d\n",
+ ISL29028_REG_PROX_DATA, ret);
+ return ret;
+ }
+ *prox = data;
+ return 0;
+}
+
+static int isl29028_proxim_get(struct isl29028_chip *chip, int *prox_data)
+{
+ int ret;
+
+ if (!chip->enable_prox) {
+ ret = isl29028_enable_proximity(chip, true);
+ if (ret < 0)
+ return ret;
+ chip->enable_prox = true;
+ }
+ return isl29028_read_proxim(chip, prox_data);
+}
+
+static int isl29028_als_get(struct isl29028_chip *chip, int *als_data)
+{
+ int ret;
+ int als_ir_data;
+
+ if (chip->als_ir_mode != MODE_ALS) {
+ ret = isl29028_set_als_ir_mode(chip, MODE_ALS);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Error in enabling ALS mode err %d\n", ret);
+ return ret;
+ }
+ chip->als_ir_mode = MODE_ALS;
+ }
+
+ ret = isl29028_read_als_ir(chip, &als_ir_data);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * convert als data count to lux.
+ * if lux_scale = 125, lux = count * 0.031
+ * if lux_scale = 2000, lux = count * 0.49
+ */
+ if (chip->lux_scale == 125)
+ als_ir_data = (als_ir_data * 31) / 1000;
+ else
+ als_ir_data = (als_ir_data * 49) / 100;
+
+ *als_data = als_ir_data;
+ return 0;
+}
+
+static int isl29028_ir_get(struct isl29028_chip *chip, int *ir_data)
+{
+ int ret;
+
+ if (chip->als_ir_mode != MODE_IR) {
+ ret = isl29028_set_als_ir_mode(chip, MODE_IR);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Error in enabling IR mode err %d\n", ret);
+ return ret;
+ }
+ chip->als_ir_mode = MODE_IR;
+ }
+ return isl29028_read_als_ir(chip, ir_data);
+}
+
+/* Channel IO */
+static int isl29028_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int val, int val2, long mask)
+{
+ struct isl29028_chip *chip = iio_priv(indio_dev);
+ int ret = -EINVAL;
+
+ mutex_lock(&chip->lock);
+ switch (chan->type) {
+ case IIO_PROXIMITY:
+ if (mask != IIO_CHAN_INFO_SAMP_FREQ) {
+ dev_err(chip->dev,
+ "proximity: mask value 0x%08lx not supported\n",
+ mask);
+ break;
+ }
+ if (val < 1 || val > 100) {
+ dev_err(chip->dev,
+ "Samp_freq %d is not in range[1:100]\n", val);
+ break;
+ }
+ ret = isl29028_set_proxim_sampling(chip, val);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Setting proximity samp_freq fail, err %d\n",
+ ret);
+ break;
+ }
+ chip->prox_sampling = val;
+ break;
+
+ case IIO_LIGHT:
+ if (mask != IIO_CHAN_INFO_SCALE) {
+ dev_err(chip->dev,
+ "light: mask value 0x%08lx not supported\n",
+ mask);
+ break;
+ }
+ if ((val != 125) && (val != 2000)) {
+ dev_err(chip->dev,
+ "lux scale %d is invalid [125, 2000]\n", val);
+ break;
+ }
+ ret = isl29028_set_als_scale(chip, val);
+ if (ret < 0) {
+ dev_err(chip->dev,
+ "Setting lux scale fail with error %d\n", ret);
+ break;
+ }
+ chip->lux_scale = val;
+ break;
+
+ default:
+ dev_err(chip->dev, "Unsupported channel type\n");
+ break;
+ }
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static int isl29028_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan, int *val, int *val2, long mask)
+{
+ struct isl29028_chip *chip = iio_priv(indio_dev);
+ int ret = -EINVAL;
+
+ mutex_lock(&chip->lock);
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_PROCESSED:
+ switch (chan->type) {
+ case IIO_LIGHT:
+ ret = isl29028_als_get(chip, val);
+ break;
+ case IIO_INTENSITY:
+ ret = isl29028_ir_get(chip, val);
+ break;
+ case IIO_PROXIMITY:
+ ret = isl29028_proxim_get(chip, val);
+ break;
+ default:
+ break;
+ }
+ if (ret < 0)
+ break;
+ ret = IIO_VAL_INT;
+ break;
+
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ if (chan->type != IIO_PROXIMITY)
+ break;
+ *val = chip->prox_sampling;
+ ret = IIO_VAL_INT;
+ break;
+
+ case IIO_CHAN_INFO_SCALE:
+ if (chan->type != IIO_LIGHT)
+ break;
+ *val = chip->lux_scale;
+ ret = IIO_VAL_INT;
+ break;
+
+ default:
+ dev_err(chip->dev, "mask value 0x%08lx not supported\n", mask);
+ break;
+ }
+ mutex_unlock(&chip->lock);
+ return ret;
+}
+
+static IIO_CONST_ATTR(in_proximity_sampling_frequency_available,
+ "1, 3, 5, 10, 13, 20, 83, 100");
+static IIO_CONST_ATTR(in_illuminance_scale_available, "125, 2000");
+
+#define ISL29028_DEV_ATTR(name) (&iio_dev_attr_##name.dev_attr.attr)
+#define ISL29028_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr)
+static struct attribute *isl29028_attributes[] = {
+ ISL29028_CONST_ATTR(in_proximity_sampling_frequency_available),
+ ISL29028_CONST_ATTR(in_illuminance_scale_available),
+ NULL,
+};
+
+static const struct attribute_group isl29108_group = {
+ .attrs = isl29028_attributes,
+};
+
+static const struct iio_chan_spec isl29028_channels[] = {
+ {
+ .type = IIO_LIGHT,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT |
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
+ }, {
+ .type = IIO_INTENSITY,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
+ }, {
+ .type = IIO_PROXIMITY,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT,
+ }
+};
+
+static const struct iio_info isl29028_info = {
+ .attrs = &isl29108_group,
+ .driver_module = THIS_MODULE,
+ .read_raw = &isl29028_read_raw,
+ .write_raw = &isl29028_write_raw,
+};
+
+static int isl29028_chip_init(struct isl29028_chip *chip)
+{
+ int ret;
+
+ chip->enable_prox = false;
+ chip->prox_sampling = 20;
+ chip->lux_scale = 2000;
+ chip->als_ir_mode = MODE_NONE;
+
+ ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0);
+ if (ret < 0) {
+ dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
+ __func__, ISL29028_REG_TEST1_MODE, ret);
+ return ret;
+ }
+ ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0);
+ if (ret < 0) {
+ dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
+ __func__, ISL29028_REG_TEST2_MODE, ret);
+ return ret;
+ }
+
+ ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0);
+ if (ret < 0) {
+ dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
+ __func__, ISL29028_REG_CONFIGURE, ret);
+ return ret;
+ }
+
+ ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling);
+ if (ret < 0) {
+ dev_err(chip->dev, "%s(): setting the proximity, err = %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = isl29028_set_als_scale(chip, chip->lux_scale);
+ if (ret < 0)
+ dev_err(chip->dev, "%s(): setting als scale failed, err = %d\n",
+ __func__, ret);
+ return ret;
+}
+
+static bool is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ISL29028_REG_INTERRUPT:
+ case ISL29028_REG_PROX_DATA:
+ case ISL29028_REG_ALSIR_L:
+ case ISL29028_REG_ALSIR_U:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config isl29028_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .volatile_reg = is_volatile_reg,
+ .max_register = ISL29028_NUM_REGS - 1,
+ .num_reg_defaults_raw = ISL29028_NUM_REGS,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int __devinit isl29028_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct isl29028_chip *chip;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ indio_dev = iio_device_alloc(sizeof(*chip));
+ if (!indio_dev) {
+ dev_err(&client->dev, "iio allocation fails\n");
+ return -ENOMEM;
+ }
+
+ chip = iio_priv(indio_dev);
+
+ i2c_set_clientdata(client, indio_dev);
+ chip->dev = &client->dev;
+ mutex_init(&chip->lock);
+
+ chip->regmap = devm_regmap_init_i2c(client, &isl29028_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ ret = PTR_ERR(chip->regmap);
+ dev_err(chip->dev, "regmap initialization failed: %d\n", ret);
+ goto exit_iio_free;
+ }
+
+ ret = isl29028_chip_init(chip);
+ if (ret < 0) {
+ dev_err(chip->dev, "chip initialization failed: %d\n", ret);
+ goto exit_iio_free;
+ }
+
+ indio_dev->info = &isl29028_info;
+ indio_dev->channels = isl29028_channels;
+ indio_dev->num_channels = ARRAY_SIZE(isl29028_channels);
+ indio_dev->name = id->name;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ ret = iio_device_register(indio_dev);
+ if (ret < 0) {
+ dev_err(chip->dev, "iio registration fails with error %d\n",
+ ret);
+ goto exit_iio_free;
+ }
+ return 0;
+
+exit_iio_free:
+ iio_device_free(indio_dev);
+ return ret;
+}
+
+static int __devexit isl29028_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+ iio_device_unregister(indio_dev);
+ iio_device_free(indio_dev);
+ return 0;
+}
+
+static const struct i2c_device_id isl29028_id[] = {
+ {"isl29028", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, isl29028_id);
+
+static const struct of_device_id isl29028_of_match[] = {
+ { .compatible = "isil,isl29028", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, isl29028_of_match);
+
+static struct i2c_driver isl29028_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "isl29028",
+ .owner = THIS_MODULE,
+ .of_match_table = isl29028_of_match,
+ },
+ .probe = isl29028_probe,
+ .remove = __devexit_p(isl29028_remove),
+ .id_table = isl29028_id,
+};
+
+module_i2c_driver(isl29028_driver);
+
+MODULE_DESCRIPTION("ISL29028 Ambient Light and Proximity Sensor driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
diff --git a/drivers/staging/iio/light/tsl2563.c b/drivers/staging/iio/light/tsl2563.c
index 546c95a4ea9..9d740be43a8 100644
--- a/drivers/staging/iio/light/tsl2563.c
+++ b/drivers/staging/iio/light/tsl2563.c
@@ -35,9 +35,9 @@
#include <linux/err.h>
#include <linux/slab.h>
-#include "../iio.h"
-#include "../sysfs.h"
-#include "../events.h"
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
#include "tsl2563.h"
/* Use this many bits for fraction part. */
@@ -465,7 +465,7 @@ static int tsl2563_write_raw(struct iio_dev *indio_dev,
{
struct tsl2563_chip *chip = iio_priv(indio_dev);
- if (chan->channel == 0)
+ if (chan->channel == IIO_MOD_LIGHT_BOTH)
chip->calib0 = calib_from_sysfs(val);
else
chip->calib1 = calib_from_sysfs(val);
@@ -485,7 +485,8 @@ static int tsl2563_read_raw(struct iio_dev *indio_dev,
mutex_lock(&chip->lock);
switch (m) {
- case 0:
+ case IIO_CHAN_INFO_RAW:
+ case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_LIGHT:
ret = tsl2563_get_adc(chip);
@@ -534,12 +535,14 @@ static const struct iio_chan_spec tsl2563_channels[] = {
{
.type = IIO_LIGHT,
.indexed = 1,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT,
.channel = 0,
}, {
.type = IIO_INTENSITY,
.modified = 1,
.channel2 = IIO_MOD_LIGHT_BOTH,
- .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
.event_mask = (IIO_EV_BIT(IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING) |
IIO_EV_BIT(IIO_EV_TYPE_THRESH,
@@ -548,7 +551,8 @@ static const struct iio_chan_spec tsl2563_channels[] = {
.type = IIO_INTENSITY,
.modified = 1,
.channel2 = IIO_MOD_LIGHT_IR,
- .info_mask = IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
}
};
@@ -710,7 +714,7 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
int err = 0;
u8 id = 0;
- indio_dev = iio_allocate_device(sizeof(*chip));
+ indio_dev = iio_device_alloc(sizeof(*chip));
if (!indio_dev)
return -ENOMEM;
@@ -797,7 +801,7 @@ fail2:
if (client->irq)
free_irq(client->irq, indio_dev);
fail1:
- iio_free_device(indio_dev);
+ iio_device_free(indio_dev);
return err;
}
@@ -818,7 +822,7 @@ static int tsl2563_remove(struct i2c_client *client)
if (client->irq)
free_irq(client->irq, indio_dev);
- iio_free_device(indio_dev);
+ iio_device_free(indio_dev);
return 0;
}
diff --git a/drivers/staging/iio/light/tsl2583.c b/drivers/staging/iio/light/tsl2583.c
index 8671d98e044..5ff391e8c18 100644
--- a/drivers/staging/iio/light/tsl2583.c
+++ b/drivers/staging/iio/light/tsl2583.c
@@ -28,7 +28,7 @@
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/module.h>
-#include "../iio.h"
+#include <linux/iio/iio.h>
#define TSL258X_MAX_DEVICE_REGS 32
@@ -815,7 +815,7 @@ static int __devinit taos_probe(struct i2c_client *clientp,
return -EOPNOTSUPP;
}
- indio_dev = iio_allocate_device(sizeof(*chip));
+ indio_dev = iio_device_alloc(sizeof(*chip));
if (indio_dev == NULL) {
ret = -ENOMEM;
dev_err(&clientp->dev, "iio allocation failed\n");
@@ -879,7 +879,7 @@ static int __devinit taos_probe(struct i2c_client *clientp,
dev_info(&clientp->dev, "Light sensor found.\n");
return 0;
fail1:
- iio_free_device(indio_dev);
+ iio_device_free(indio_dev);
fail2:
return ret;
}
@@ -926,7 +926,7 @@ static SIMPLE_DEV_PM_OPS(taos_pm_ops, taos_suspend, taos_resume);
static int __devexit taos_remove(struct i2c_client *client)
{
iio_device_unregister(i2c_get_clientdata(client));
- iio_free_device(i2c_get_clientdata(client));
+ iio_device_free(i2c_get_clientdata(client));
return 0;
}
diff --git a/drivers/staging/iio/light/tsl2x7x.h b/drivers/staging/iio/light/tsl2x7x.h
new file mode 100755
index 00000000000..c4acf5ff179
--- /dev/null
+++ b/drivers/staging/iio/light/tsl2x7x.h
@@ -0,0 +1,100 @@
+/*
+ * Device driver for monitoring ambient light intensity (lux)
+ * and proximity (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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __TSL2X7X_H
+#define __TSL2X7X_H
+#include <linux/pm.h>
+
+/* Max number of segments allowable in LUX table */
+#define TSL2X7X_MAX_LUX_TABLE_SIZE 9
+#define MAX_DEFAULT_TABLE_BYTES (sizeof(int) * TSL2X7X_MAX_LUX_TABLE_SIZE)
+
+struct iio_dev;
+
+struct tsl2x7x_lux {
+ unsigned int ratio;
+ unsigned int ch0;
+ unsigned int ch1;
+};
+
+/**
+ * struct tsl2x7x_default_settings - power on defaults unless
+ * overridden by platform data.
+ * @als_time: ALS Integration time - multiple of 50mS
+ * @als_gain: Index into the ALS gain table.
+ * @als_gain_trim: default gain trim to account for
+ * aperture effects.
+ * @wait_time: Time between PRX and ALS cycles
+ * in 2.7 periods
+ * @prx_time: 5.2ms prox integration time -
+ * decrease in 2.7ms periods
+ * @prx_gain: Proximity gain index
+ * @prox_config: Prox configuration filters.
+ * @als_cal_target: Known external ALS reading for
+ * calibration.
+ * @interrupts_en: Enable/Disable - 0x00 = none, 0x10 = als,
+ * 0x20 = prx, 0x30 = bth
+ * @persistence: H/W Filters, Number of 'out of limits'
+ * ADC readings PRX/ALS.
+ * @als_thresh_low: CH0 'low' count to trigger interrupt.
+ * @als_thresh_high: CH0 'high' count to trigger interrupt.
+ * @prox_thres_low: Low threshold proximity detection.
+ * @prox_thres_high: High threshold proximity detection
+ * @prox_pulse_count: Number if proximity emitter pulses
+ * @prox_max_samples_cal: Used for prox cal.
+ */
+struct tsl2x7x_settings {
+ int als_time;
+ int als_gain;
+ int als_gain_trim;
+ int wait_time;
+ int prx_time;
+ int prox_gain;
+ int prox_config;
+ int als_cal_target;
+ u8 interrupts_en;
+ u8 persistence;
+ int als_thresh_low;
+ int als_thresh_high;
+ int prox_thres_low;
+ int prox_thres_high;
+ int prox_pulse_count;
+ int prox_max_samples_cal;
+};
+
+/**
+ * struct tsl2X7X_platform_data - Platform callback, glass and defaults
+ * @platform_power: Suspend/resume platform callback
+ * @power_on: Power on callback
+ * @power_off: Power off callback
+ * @platform_lux_table: Device specific glass coefficents
+ * @platform_default_settings: Device specific power on defaults
+ *
+ */
+struct tsl2X7X_platform_data {
+ int (*platform_power)(struct device *dev, pm_message_t);
+ int (*power_on) (struct iio_dev *indio_dev);
+ int (*power_off) (struct i2c_client *dev);
+ struct tsl2x7x_lux platform_lux_table[TSL2X7X_MAX_LUX_TABLE_SIZE];
+ struct tsl2x7x_settings *platform_default_settings;
+};
+
+#endif /* __TSL2X7X_H */
diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
new file mode 100755
index 00000000000..efbc4d27e79
--- /dev/null
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -0,0 +1,2082 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#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/version.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)
+
+/*Common device IIO EventMask */
+#define TSL2X7X_EVENT_MASK \
+ (IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) | \
+ IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)),
+
+#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_parse_buffer() - parse a decimal result from a buffer.
+ * @*buf: pointer to char buffer to parse
+ * @*result: pointer to buffer to contain
+ * resulting interger / decimal as ints.
+ *
+ */
+static int
+tsl2x7x_parse_buffer(const char *buf, struct tsl2x7x_parse_result *result)
+{
+ int integer = 0, fract = 0, fract_mult = 100000;
+ bool integer_part = true, negative = false;
+
+ if (buf[0] == '-') {
+ negative = true;
+ buf++;
+ }
+
+ while (*buf) {
+ if ('0' <= *buf && *buf <= '9') {
+ if (integer_part)
+ integer = integer*10 + *buf - '0';
+ else {
+ fract += fract_mult*(*buf - '0');
+ if (fract_mult == 1)
+ break;
+ fract_mult /= 10;
+ }
+ } else if (*buf == '\n') {
+ if (*(buf + 1) == '\0')
+ break;
+ else
+ return -EINVAL;
+ } else if (*buf == '.') {
+ integer_part = false;
+ } else {
+ return -EINVAL;
+ }
+ buf++;
+ }
+ if (negative) {
+ if (integer)
+ integer = -integer;
+ else
+ fract = -fract;
+ }
+
+ result->integer = integer;
+ result->fract = fract;
+
+ return 0;
+}
+
+/**
+ * tsl2x7x_i2c_read() - Read a byte from a register.
+ * @client: i2c client
+ * @reg: device register to read from
+ * @*val: pointer to location to store register contents.
+ *
+ */
+static int
+tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val)
+{
+ int ret = 0;
+
+ /* select register to write */
+ ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg));
+ if (ret < 0) {
+ dev_err(&client->dev, "%s: failed to write register %x\n"
+ , __func__, reg);
+ return ret;
+ }
+
+ /* read the data */
+ ret = i2c_smbus_read_byte(client);
+ if (ret >= 0)
+ *val = (u8)ret;
+ else
+ dev_err(&client->dev, "%s: failed to read register %x\n"
+ , __func__, reg);
+
+ return ret;
+}
+
+/**
+ * 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 = tsl2x7x_i2c_read(chip->client,
+ (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: Failed to read STATUS Reg\n", __func__);
+ goto out_unlock;
+ }
+ /* is data new & valid */
+ if (!(buf[0] & 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++) {
+ ret = tsl2x7x_i2c_read(chip->client,
+ (TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i)),
+ &buf[i]);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to read. err=%x\n", __func__, ret);
+ goto out_unlock;
+ }
+ }
+
+ /* 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,
+ "%s: i2c_write_command failed - err = %d\n",
+ __func__, 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 == 0) {
+ /* 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 status;
+ 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 = tsl2x7x_i2c_read(chip->client,
+ (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: i2c err=%d\n", __func__, ret);
+ goto prox_poll_err;
+ }
+
+ switch (chip->id) {
+ case tsl2571:
+ case tsl2671:
+ case tmd2671:
+ case tsl2771:
+ case tmd2771:
+ if (!(status & TSL2X7X_STA_ADC_VALID))
+ goto prox_poll_err;
+ break;
+ case tsl2572:
+ case tsl2672:
+ case tmd2672:
+ case tsl2772:
+ case tmd2772:
+ if (!(status & TSL2X7X_STA_PRX_VALID))
+ goto prox_poll_err;
+ break;
+ }
+
+ for (i = 0; i < 2; i++) {
+ ret = tsl2x7x_i2c_read(chip->client,
+ (TSL2X7X_CMD_REG |
+ (TSL2X7X_PRX_LO + i)), &chdata[i]);
+ if (ret < 0)
+ goto prox_poll_err;
+ }
+
+ 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 != 0)
+ 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);
+ u8 reg_val;
+ int gain_trim_val;
+ int ret;
+ int lux_val;
+
+ ret = i2c_smbus_write_byte(chip->client,
+ (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to write CNTRL register, ret=%d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ reg_val = i2c_smbus_read_byte(chip->client);
+ if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON))
+ != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) {
+ dev_err(&chip->client->dev,
+ "%s: failed: ADC not enabled\n", __func__);
+ return -1;
+ }
+
+ ret = i2c_smbus_write_byte(chip->client,
+ (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "%s: failed to write ctrl reg: ret=%d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ reg_val = i2c_smbus_read_byte(chip->client);
+ if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) {
+ dev_err(&chip->client->dev,
+ "%s: failed: STATUS - ADC not valid.\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;
+ chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
+ chip->tsl2x7x_settings.prox_thres_high;
+
+ /* 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 regster */
+ als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
+ if (als_count == 0)
+ 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,
+ "%s: failed on write to reg %d.\n", __func__, i);
+ return ret;
+ }
+ }
+
+ mdelay(3); /* Power-on settling time */
+
+ /* 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;
+
+ mutex_lock(&chip->als_mutex);
+ mutex_lock(&chip->prox_mutex);
+
+ if (device_status == TSL2X7X_CHIP_WORKING)
+ tsl2x7x_chip_off(indio_dev);
+
+ tsl2x7x_chip_on(indio_dev);
+
+ if (device_status != TSL2X7X_CHIP_WORKING)
+ tsl2x7x_chip_off(indio_dev);
+
+ mutex_unlock(&chip->prox_mutex);
+ mutex_unlock(&chip->als_mutex);
+
+ return 0;
+}
+
+static
+void tsl2x7x_prox_calculate(int *data, int length,
+ struct tsl2x7x_prox_stat *statP)
+{
+ int i;
+ int sample_sum;
+ int tmp;
+
+ if (length == 0)
+ 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,
+ "%s: max prox samples cal is too big: %d\n",
+ __func__, 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++) {
+ mdelay(15);
+ 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 tsl2x7x_power_state_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status);
+}
+
+static ssize_t tsl2x7x_power_state_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ bool value;
+
+ if (strtobool(buf, &value))
+ return -EINVAL;
+
+ if (value)
+ tsl2x7x_chip_on(indio_dev);
+ else
+ tsl2x7x_chip_off(indio_dev);
+
+ return len;
+}
+
+static ssize_t tsl2x7x_gain_available_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(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");
+ break;
+ }
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120");
+}
+
+static ssize_t tsl2x7x_prox_gain_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 tsl2x7x_als_time_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(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 tsl2x7x_als_time_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ struct tsl2x7x_parse_result result;
+
+ result.integer = 0;
+ result.fract = 0;
+
+ tsl2x7x_parse_buffer(buf, &result);
+
+ result.fract /= 1000;
+ 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 tsl2x7x_als_cal_target_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ chip->tsl2x7x_settings.als_cal_target);
+}
+
+static ssize_t tsl2x7x_als_cal_target_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ unsigned long value;
+
+ if (kstrtoul(buf, 0, &value))
+ return -EINVAL;
+
+ if (value)
+ chip->tsl2x7x_settings.als_cal_target = value;
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return len;
+}
+
+/* persistence settings */
+static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(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 tsl2x7x_als_persistence_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ struct tsl2x7x_parse_result result;
+ int y, z, filter_delay;
+
+ result.integer = 0;
+ result.fract = 0;
+ tsl2x7x_parse_buffer(buf, &result);
+
+ result.fract /= 1000;
+ 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);
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(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 tsl2x7x_prox_persistence_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ struct tsl2x7x_parse_result result;
+ int y, z, filter_delay;
+
+ result.integer = 0;
+ result.fract = 0;
+ tsl2x7x_parse_buffer(buf, &result);
+
+ result.fract /= 1000;
+ 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);
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static ssize_t tsl2x7x_do_calibrate(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ bool value;
+
+ if (strtobool(buf, &value))
+ return -EINVAL;
+
+ if (value)
+ tsl2x7x_als_calibrate(indio_dev);
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return len;
+}
+
+static ssize_t tsl2x7x_luxtable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ int i = 0;
+ int offset = 0;
+
+ while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
+ offset += snprintf(buf + offset, PAGE_SIZE, "%d,%d,%d,",
+ 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 tsl2x7x_luxtable_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct tsl2X7X_chip *chip = iio_priv(dev_get_drvdata(dev));
+ int value[ARRAY_SIZE(chip->tsl2x7x_device_lux)*3 + 1];
+ int n;
+
+ 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));
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return len;
+}
+
+static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ bool value;
+
+ if (strtobool(buf, &value))
+ return -EINVAL;
+
+ if (value)
+ tsl2x7x_prox_cal(indio_dev);
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return len;
+}
+
+static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
+ u64 event_code)
+{
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+ int ret;
+
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == 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,
+ u64 event_code,
+ int val)
+{
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == 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;
+ }
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return 0;
+}
+
+static int tsl2x7x_write_thresh(struct iio_dev *indio_dev,
+ u64 event_code,
+ int val)
+{
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) {
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
+ case IIO_EV_DIR_RISING:
+ chip->tsl2x7x_settings.als_thresh_high = val;
+ break;
+ case IIO_EV_DIR_FALLING:
+ chip->tsl2x7x_settings.als_thresh_low = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else {
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
+ case IIO_EV_DIR_RISING:
+ chip->tsl2x7x_settings.prox_thres_high = val;
+ break;
+ case IIO_EV_DIR_FALLING:
+ chip->tsl2x7x_settings.prox_thres_low = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return 0;
+}
+
+static int tsl2x7x_read_thresh(struct iio_dev *indio_dev,
+ u64 event_code,
+ int *val)
+{
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);
+
+ if (IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(event_code) == IIO_INTENSITY) {
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
+ case IIO_EV_DIR_RISING:
+ *val = chip->tsl2x7x_settings.als_thresh_high;
+ break;
+ case IIO_EV_DIR_FALLING:
+ *val = chip->tsl2x7x_settings.als_thresh_low;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else {
+ switch (IIO_EVENT_CODE_EXTRACT_DIR(event_code)) {
+ case IIO_EV_DIR_RISING:
+ *val = chip->tsl2x7x_settings.prox_thres_high;
+ break;
+ case IIO_EV_DIR_FALLING:
+ *val = chip->tsl2x7x_settings.prox_thres_low;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+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;
+ }
+ 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;
+ }
+ 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;
+ break;
+ }
+ chip->tsl2x7x_settings.als_gain = 3;
+ break;
+ case 128:
+ switch (chip->id) {
+ case tsl2571:
+ case tsl2671:
+ case tmd2671:
+ case tsl2771:
+ case tmd2771:
+ return -EINVAL;
+ break;
+ }
+ 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;
+ }
+
+ tsl2x7x_invoke_change(indio_dev);
+
+ return 0;
+}
+
+static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR,
+ tsl2x7x_power_state_show, tsl2x7x_power_state_store);
+
+static DEVICE_ATTR(in_proximity0_calibscale_available, S_IRUGO,
+ tsl2x7x_prox_gain_available_show, NULL);
+
+static DEVICE_ATTR(in_illuminance0_calibscale_available, S_IRUGO,
+ tsl2x7x_gain_available_show, NULL);
+
+static DEVICE_ATTR(in_illuminance0_integration_time, S_IRUGO | S_IWUSR,
+ tsl2x7x_als_time_show, tsl2x7x_als_time_store);
+
+static DEVICE_ATTR(in_illuminance0_target_input, S_IRUGO | S_IWUSR,
+ tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store);
+
+static DEVICE_ATTR(in_illuminance0_calibrate, S_IWUSR, NULL,
+ tsl2x7x_do_calibrate);
+
+static DEVICE_ATTR(in_proximity0_calibrate, S_IWUSR, NULL,
+ tsl2x7x_do_prox_calibrate);
+
+static DEVICE_ATTR(in_illuminance0_lux_table, S_IRUGO | S_IWUSR,
+ tsl2x7x_luxtable_show, tsl2x7x_luxtable_store);
+
+static DEVICE_ATTR(in_intensity0_thresh_period, S_IRUGO | S_IWUSR,
+ tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store);
+
+static DEVICE_ATTR(in_proximity0_thresh_period, S_IRUGO | S_IWUSR,
+ tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store);
+
+/* Use the default register values to identify the Taos device */
+static int tsl2x7x_device_id(unsigned char *id, int target)
+{
+ switch (target) {
+ case tsl2571:
+ case tsl2671:
+ case tsl2771:
+ return ((*id & 0xf0) == TRITON_ID);
+ break;
+ case tmd2671:
+ case tmd2771:
+ return ((*id & 0xf0) == HALIBUT_ID);
+ break;
+ case tsl2572:
+ case tsl2672:
+ case tmd2672:
+ case tsl2772:
+ case tmd2772:
+ return ((*id & 0xf0) == SWORDFISH_ID);
+ break;
+ }
+
+ 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();
+ 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,
+ "%s: Failed to clear irq from event handler. err = %d\n",
+ __func__, ret);
+
+ return IRQ_HANDLED;
+}
+
+static struct attribute *tsl2x7x_ALS_device_attrs[] = {
+ &dev_attr_power_state.attr,
+ &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_power_state.attr,
+ &dev_attr_in_proximity0_calibrate.attr,
+ NULL
+};
+
+static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
+ &dev_attr_power_state.attr,
+ &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_power_state.attr,
+ &dev_attr_in_proximity0_calibrate.attr,
+ &dev_attr_in_proximity0_calibscale_available.attr,
+ NULL
+};
+
+static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
+ &dev_attr_power_state.attr,
+ &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 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_thresh,
+ .write_event_value = &tsl2x7x_write_thresh,
+ .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_thresh,
+ .write_event_value = &tsl2x7x_write_thresh,
+ .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_thresh,
+ .write_event_value = &tsl2x7x_write_thresh,
+ .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_thresh,
+ .write_event_value = &tsl2x7x_write_thresh,
+ .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_thresh,
+ .write_event_value = &tsl2x7x_write_thresh,
+ .read_event_config = &tsl2x7x_read_interrupt_config,
+ .write_event_config = &tsl2x7x_write_interrupt_config,
+ },
+};
+
+static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
+ [ALS] = {
+ .channel = {
+ {
+ .type = IIO_LIGHT,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT,
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ }, {
+ .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 = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ },
+ },
+ .chan_table_elements = 1,
+ .info = &tsl2X7X_device_info[PRX],
+ },
+ [ALSPRX] = {
+ .channel = {
+ {
+ .type = IIO_LIGHT,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 1,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
+ }, {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ },
+ },
+ .chan_table_elements = 4,
+ .info = &tsl2X7X_device_info[ALSPRX],
+ },
+ [PRX2] = {
+ .channel = {
+ {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ },
+ },
+ .chan_table_elements = 1,
+ .info = &tsl2X7X_device_info[PRX2],
+ },
+ [ALSPRX2] = {
+ .channel = {
+ {
+ .type = IIO_LIGHT,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT,
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ }, {
+ .type = IIO_INTENSITY,
+ .indexed = 1,
+ .channel = 1,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
+ }, {
+ .type = IIO_PROXIMITY,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT,
+ .event_mask = TSL2X7X_EVENT_MASK
+ },
+ },
+ .chan_table_elements = 4,
+ .info = &tsl2X7X_device_info[ALSPRX2],
+ },
+};
+
+static int __devinit tsl2x7x_probe(struct i2c_client *clientp,
+ const struct i2c_device_id *id)
+{
+ int ret;
+ unsigned char device_id;
+ struct iio_dev *indio_dev;
+ struct tsl2X7X_chip *chip;
+
+ indio_dev = iio_device_alloc(sizeof(*chip));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ chip = iio_priv(indio_dev);
+ chip->client = clientp;
+ i2c_set_clientdata(clientp, indio_dev);
+
+ ret = tsl2x7x_i2c_read(chip->client,
+ TSL2X7X_CHIPID, &device_id);
+ if (ret < 0)
+ goto fail1;
+
+ if ((!tsl2x7x_device_id(&device_id, id->driver_data)) ||
+ (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) {
+ dev_info(&chip->client->dev,
+ "%s: i2c device found does not match expected id\n",
+ __func__);
+ goto fail1;
+ }
+
+ ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
+ if (ret < 0) {
+ dev_err(&clientp->dev, "%s: write to cmd reg failed. err = %d\n",
+ __func__, ret);
+ goto fail1;
+ }
+
+ /* 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 = clientp->dev.platform_data;
+ 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 = request_threaded_irq(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__);
+ goto fail2;
+ }
+ }
+
+ /* 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__);
+ goto fail1;
+ }
+
+ dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
+
+ return 0;
+
+fail1:
+ if (clientp->irq)
+ free_irq(clientp->irq, indio_dev);
+fail2:
+ iio_device_free(indio_dev);
+
+ return ret;
+}
+
+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 __devexit tsl2x7x_remove(struct i2c_client *client)
+{
+ struct tsl2X7X_chip *chip = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = iio_priv_to_dev(chip);
+
+ tsl2x7x_chip_off(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ if (client->irq)
+ free_irq(client->irq, chip->client->name);
+
+ iio_device_free(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 dev_pm_ops tsl2x7x_pm_ops = {
+ .suspend = tsl2x7x_suspend,
+ .resume = tsl2x7x_resume,
+};
+
+/* Driver definition */
+static struct i2c_driver tsl2x7x_driver = {
+ .driver = {
+ .name = "tsl2x7x",
+ .pm = &tsl2x7x_pm_ops,
+ },
+ .id_table = tsl2x7x_idtable,
+ .probe = tsl2x7x_probe,
+ .remove = __devexit_p(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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-16 21:35:15 +0000