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path: root/drivers/staging/iio/light/tsl2563.c
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Diffstat (limited to 'drivers/staging/iio/light/tsl2563.c')
-rw-r--r--drivers/staging/iio/light/tsl2563.c176
1 files changed, 88 insertions, 88 deletions
diff --git a/drivers/staging/iio/light/tsl2563.c b/drivers/staging/iio/light/tsl2563.c
index 9cffa2e..7e984bc 100644
--- a/drivers/staging/iio/light/tsl2563.c
+++ b/drivers/staging/iio/light/tsl2563.c
@@ -31,13 +31,12 @@
#include <linux/sched.h>
#include <linux/mutex.h>
#include <linux/delay.h>
-#include <linux/platform_device.h>
#include <linux/pm.h>
-#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/slab.h>
#include "../iio.h"
+#include "../sysfs.h"
#include "tsl2563.h"
/* Use this many bits for fraction part. */
@@ -137,37 +136,14 @@ struct tsl2563_chip {
u32 data1;
};
-static int tsl2563_write(struct i2c_client *client, u8 reg, u8 value)
-{
- int ret;
- u8 buf[2];
-
- buf[0] = TSL2563_CMD | reg;
- buf[1] = value;
-
- ret = i2c_master_send(client, buf, sizeof(buf));
- return (ret == sizeof(buf)) ? 0 : ret;
-}
-
-static int tsl2563_read(struct i2c_client *client, u8 reg, void *buf, int len)
-{
- int ret;
- u8 cmd = TSL2563_CMD | reg;
-
- ret = i2c_master_send(client, &cmd, sizeof(cmd));
- if (ret != sizeof(cmd))
- return ret;
-
- return i2c_master_recv(client, buf, len);
-}
-
static int tsl2563_set_power(struct tsl2563_chip *chip, int on)
{
struct i2c_client *client = chip->client;
u8 cmd;
cmd = on ? TSL2563_CMD_POWER_ON : TSL2563_CMD_POWER_OFF;
- return tsl2563_write(client, TSL2563_REG_CTRL, cmd);
+ return i2c_smbus_write_byte_data(client,
+ TSL2563_CMD | TSL2563_REG_CTRL, cmd);
}
/*
@@ -178,36 +154,40 @@ static int tsl2563_get_power(struct tsl2563_chip *chip)
{
struct i2c_client *client = chip->client;
int ret;
- u8 val;
- ret = tsl2563_read(client, TSL2563_REG_CTRL, &val, sizeof(val));
- if (ret != sizeof(val))
+ ret = i2c_smbus_read_byte_data(client, TSL2563_CMD | TSL2563_REG_CTRL);
+ if (ret < 0)
return ret;
- return (val & TSL2563_CTRL_POWER_MASK) == TSL2563_CMD_POWER_ON;
+ return (ret & TSL2563_CTRL_POWER_MASK) == TSL2563_CMD_POWER_ON;
}
static int tsl2563_configure(struct tsl2563_chip *chip)
{
int ret;
- ret = tsl2563_write(chip->client, TSL2563_REG_TIMING,
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_TIMING,
chip->gainlevel->gaintime);
if (ret)
goto error_ret;
- ret = tsl2563_write(chip->client, TSL2563_REG_HIGHLOW,
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_HIGHLOW,
chip->high_thres & 0xFF);
if (ret)
goto error_ret;
- ret = tsl2563_write(chip->client, TSL2563_REG_HIGHHIGH,
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_HIGHHIGH,
(chip->high_thres >> 8) & 0xFF);
if (ret)
goto error_ret;
- ret = tsl2563_write(chip->client, TSL2563_REG_LOWLOW,
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_LOWLOW,
chip->low_thres & 0xFF);
if (ret)
goto error_ret;
- ret = tsl2563_write(chip->client, TSL2563_REG_LOWHIGH,
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_LOWHIGH,
(chip->low_thres >> 8) & 0xFF);
/* Interrupt register is automatically written anyway if it is relevant
so is not here */
@@ -242,8 +222,8 @@ static int tsl2563_read_id(struct tsl2563_chip *chip, u8 *id)
struct i2c_client *client = chip->client;
int ret;
- ret = tsl2563_read(client, TSL2563_REG_ID, id, sizeof(*id));
- if (ret != sizeof(*id))
+ ret = i2c_smbus_read_byte_data(client, TSL2563_CMD | TSL2563_REG_ID);
+ if (ret < 0)
return ret;
return 0;
@@ -313,8 +293,9 @@ static int tsl2563_adjust_gainlevel(struct tsl2563_chip *chip, u16 adc)
(adc > chip->gainlevel->max) ?
chip->gainlevel++ : chip->gainlevel--;
- tsl2563_write(client, TSL2563_REG_TIMING,
- chip->gainlevel->gaintime);
+ i2c_smbus_write_byte_data(client,
+ TSL2563_CMD | TSL2563_REG_TIMING,
+ chip->gainlevel->gaintime);
tsl2563_wait_adc(chip);
tsl2563_wait_adc(chip);
@@ -327,7 +308,6 @@ static int tsl2563_adjust_gainlevel(struct tsl2563_chip *chip, u16 adc)
static int tsl2563_get_adc(struct tsl2563_chip *chip)
{
struct i2c_client *client = chip->client;
- u8 buf0[2], buf1[2];
u16 adc0, adc1;
int retry = 1;
int ret = 0;
@@ -350,19 +330,17 @@ static int tsl2563_get_adc(struct tsl2563_chip *chip)
}
while (retry) {
- ret = tsl2563_read(client,
- TSL2563_REG_DATA0LOW,
- buf0, sizeof(buf0));
- if (ret != sizeof(buf0))
+ ret = i2c_smbus_read_word_data(client,
+ TSL2563_CMD | TSL2563_REG_DATA0LOW);
+ if (ret < 0)
goto out;
+ adc0 = ret;
- ret = tsl2563_read(client, TSL2563_REG_DATA1LOW,
- buf1, sizeof(buf1));
- if (ret != sizeof(buf1))
+ ret = i2c_smbus_read_word_data(client,
+ TSL2563_CMD | TSL2563_REG_DATA1LOW);
+ if (ret < 0)
goto out;
-
- adc0 = (buf0[1] << 8) + buf0[0];
- adc1 = (buf1[1] << 8) + buf1[0];
+ adc1 = ret;
retry = tsl2563_adjust_gainlevel(chip, adc0);
}
@@ -540,7 +518,8 @@ static int tsl2563_read_raw(struct iio_dev *indio_dev,
ret = IIO_VAL_INT;
break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ goto error_ret;
}
error_ret:
@@ -549,19 +528,30 @@ error_ret:
}
static const struct iio_chan_spec tsl2563_channels[] = {
- IIO_CHAN(IIO_LIGHT, 0, 1, 1, NULL, 0, 0, 0, 0, 0, {}, 0),
- IIO_CHAN(IIO_INTENSITY, 1, 1, 0, "both", 0,
- (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE), 0, 0, 0, {},
- IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING) |
- IIO_EV_BIT(IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING)),
- IIO_CHAN(IIO_INTENSITY, 1, 1, 0, "ir", 1,
- (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE), 0, 0, 0, {},
- 0)
+ {
+ .type = IIO_LIGHT,
+ .indexed = 1,
+ .channel = 0,
+ }, {
+ .type = IIO_INTENSITY,
+ .modified = 1,
+ .channel2 = IIO_MOD_LIGHT_BOTH,
+ .info_mask = (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE),
+ .event_mask = (IIO_EV_BIT(IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_RISING) |
+ IIO_EV_BIT(IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_FALLING)),
+ }, {
+ .type = IIO_INTENSITY,
+ .modified = 1,
+ .channel2 = IIO_MOD_LIGHT_BOTH,
+ .info_mask = (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE),
+ }
};
static int tsl2563_read_thresh(struct iio_dev *indio_dev,
- int event_code,
- int *val)
+ u64 event_code,
+ int *val)
{
struct tsl2563_chip *chip = iio_priv(indio_dev);
@@ -579,8 +569,8 @@ static int tsl2563_read_thresh(struct iio_dev *indio_dev,
return 0;
}
-static ssize_t tsl2563_write_thresh(struct iio_dev *indio_dev,
- int event_code,
+static int tsl2563_write_thresh(struct iio_dev *indio_dev,
+ u64 event_code,
int val)
{
struct tsl2563_chip *chip = iio_priv(indio_dev);
@@ -592,11 +582,13 @@ static ssize_t tsl2563_write_thresh(struct iio_dev *indio_dev,
else
address = TSL2563_REG_LOWLOW;
mutex_lock(&chip->lock);
- ret = tsl2563_write(chip->client, address, val & 0xFF);
+ ret = i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | address,
+ val & 0xFF);
if (ret)
goto error_ret;
- ret = tsl2563_write(chip->client, address + 1,
- (val >> 8) & 0xFF);
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | (address + 1),
+ (val >> 8) & 0xFF);
if (IIO_EVENT_CODE_EXTRACT_DIR(event_code) == IIO_EV_DIR_RISING)
chip->high_thres = val;
else
@@ -612,23 +604,22 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
{
struct iio_dev *dev_info = private;
struct tsl2563_chip *chip = iio_priv(dev_info);
- u8 cmd = TSL2563_CMD | TSL2563_CLEARINT;
- iio_push_event(dev_info, 0,
- IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_LIGHT,
+ iio_push_event(dev_info,
+ IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
iio_get_time_ns());
/* clear the interrupt and push the event */
- i2c_master_send(chip->client, &cmd, sizeof(cmd));
+ i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT);
return IRQ_HANDLED;
}
static int tsl2563_write_interrupt_config(struct iio_dev *indio_dev,
- int event_code,
- int state)
+ u64 event_code,
+ int state)
{
struct tsl2563_chip *chip = iio_priv(indio_dev);
int ret = 0;
@@ -647,13 +638,17 @@ static int tsl2563_write_interrupt_config(struct iio_dev *indio_dev,
if (ret)
goto out;
}
- ret = tsl2563_write(chip->client, TSL2563_REG_INT, chip->intr);
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_INT,
+ chip->intr);
chip->int_enabled = true;
}
if (!state && (chip->intr & 0x30)) {
chip->intr |= ~0x30;
- ret = tsl2563_write(chip->client, TSL2563_REG_INT, chip->intr);
+ ret = i2c_smbus_write_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_INT,
+ chip->intr);
chip->int_enabled = false;
/* now the interrupt is not enabled, we can go to sleep */
schedule_delayed_work(&chip->poweroff_work, 5 * HZ);
@@ -665,19 +660,18 @@ out:
}
static int tsl2563_read_interrupt_config(struct iio_dev *indio_dev,
- int event_code)
+ u64 event_code)
{
struct tsl2563_chip *chip = iio_priv(indio_dev);
- u8 rxbuf;
int ret;
mutex_lock(&chip->lock);
- ret = tsl2563_read(chip->client, TSL2563_REG_INT,
- &rxbuf, sizeof(rxbuf));
+ ret = i2c_smbus_read_byte_data(chip->client,
+ TSL2563_CMD | TSL2563_REG_INT);
mutex_unlock(&chip->lock);
if (ret < 0)
goto error_ret;
- ret = !!(rxbuf & 0x30);
+ ret = !!(ret & 0x30);
error_ret:
return ret;
@@ -690,11 +684,12 @@ static struct i2c_driver tsl2563_i2c_driver;
static const struct iio_info tsl2563_info_no_irq = {
.driver_module = THIS_MODULE,
+ .read_raw = &tsl2563_read_raw,
+ .write_raw = &tsl2563_write_raw,
};
static const struct iio_info tsl2563_info = {
.driver_module = THIS_MODULE,
- .num_interrupt_lines = 1,
.read_raw = &tsl2563_read_raw,
.write_raw = &tsl2563_write_raw,
.read_event_value = &tsl2563_read_thresh,
@@ -711,7 +706,7 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
struct tsl2563_platform_data *pdata = client->dev.platform_data;
int err = 0;
int ret;
- u8 id;
+ u8 id = 0;
indio_dev = iio_allocate_device(sizeof(*chip));
if (!indio_dev)
@@ -757,9 +752,6 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
indio_dev->info = &tsl2563_info;
else
indio_dev->info = &tsl2563_info_no_irq;
- ret = iio_device_register(indio_dev);
- if (ret)
- goto fail1;
if (client->irq) {
ret = request_threaded_irq(client->irq,
NULL,
@@ -778,12 +770,16 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
/* The interrupt cannot yet be enabled so this is fine without lock */
schedule_delayed_work(&chip->poweroff_work, 5 * HZ);
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto fail3;
+
return 0;
fail3:
if (client->irq)
free_irq(client->irq, indio_dev);
fail2:
- iio_device_unregister(indio_dev);
+ iio_free_device(indio_dev);
fail1:
kfree(chip);
return err;
@@ -793,16 +789,20 @@ static int tsl2563_remove(struct i2c_client *client)
{
struct tsl2563_chip *chip = i2c_get_clientdata(client);
struct iio_dev *indio_dev = iio_priv_to_dev(chip);
+
+ iio_device_unregister(indio_dev);
if (!chip->int_enabled)
cancel_delayed_work(&chip->poweroff_work);
/* Ensure that interrupts are disabled - then flush any bottom halves */
chip->intr |= ~0x30;
- tsl2563_write(chip->client, TSL2563_REG_INT, chip->intr);
+ i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT,
+ chip->intr);
flush_scheduled_work();
tsl2563_set_power(chip, 0);
if (client->irq)
free_irq(client->irq, indio_dev);
- iio_device_unregister(indio_dev);
+
+ iio_free_device(indio_dev);
return 0;
}