[PATCH 1/2] iio: ina2xx: Fix whitespace and re-order code
From: Andrew F. Davis
Date: Fri Feb 12 2016 - 13:34:56 EST
Group of probably overly rigorous whitespace and code cleanups.
- Alphabetize includes
- Assign to variables in the order they are defined
- Alignment issues
- Group alike statements together
- Use helper macros
Signed-off-by: Andrew F. Davis <afd@xxxxxx>
---
drivers/iio/adc/ina2xx-adc.c | 164 +++++++++++++++++++++----------------------
1 file changed, 80 insertions(+), 84 deletions(-)
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index d803e50..61e8ae9 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -19,17 +19,18 @@
*
* Configurable 7-bit I2C slave address from 0x40 to 0x4F
*/
-#include <linux/module.h>
-#include <linux/kthread.h>
+
#include <linux/delay.h>
+#include <linux/i2c.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/sysfs.h>
-#include <linux/i2c.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
#include <linux/regmap.h>
-#include <linux/platform_data/ina2xx.h>
-
#include <linux/util_macros.h>
+#include <linux/platform_data/ina2xx.h>
+
/* INA2XX registers definition */
#define INA2XX_CONFIG 0x00
#define INA2XX_SHUNT_VOLTAGE 0x01 /* readonly */
@@ -38,7 +39,7 @@
#define INA2XX_CURRENT 0x04 /* readonly */
#define INA2XX_CALIBRATION 0x05
-#define INA226_ALERT_MASK 0x06
+#define INA226_ALERT_MASK GENMASK(2, 1)
#define INA266_CVRF BIT(3)
#define INA2XX_MAX_REGISTERS 8
@@ -113,7 +114,7 @@ struct ina2xx_chip_info {
struct mutex state_lock;
unsigned int shunt_resistor;
int avg;
- s64 prev_ns; /* track buffer capture time, check for underruns*/
+ s64 prev_ns; /* track buffer capture time, check for underruns*/
int int_time_vbus; /* Bus voltage integration time uS */
int int_time_vshunt; /* Shunt voltage integration time uS */
bool allow_async_readout;
@@ -121,21 +122,21 @@ struct ina2xx_chip_info {
static const struct ina2xx_config ina2xx_config[] = {
[ina219] = {
- .config_default = INA219_CONFIG_DEFAULT,
- .calibration_factor = 40960000,
- .shunt_div = 100,
- .bus_voltage_shift = 3,
- .bus_voltage_lsb = 4000,
- .power_lsb = 20000,
- },
+ .config_default = INA219_CONFIG_DEFAULT,
+ .calibration_factor = 40960000,
+ .shunt_div = 100,
+ .bus_voltage_shift = 3,
+ .bus_voltage_lsb = 4000,
+ .power_lsb = 20000,
+ },
[ina226] = {
- .config_default = INA226_CONFIG_DEFAULT,
- .calibration_factor = 5120000,
- .shunt_div = 400,
- .bus_voltage_shift = 0,
- .bus_voltage_lsb = 1250,
- .power_lsb = 25000,
- },
+ .config_default = INA226_CONFIG_DEFAULT,
+ .calibration_factor = 5120000,
+ .shunt_div = 400,
+ .bus_voltage_shift = 0,
+ .bus_voltage_lsb = 1250,
+ .power_lsb = 25000,
+ },
};
static int ina2xx_read_raw(struct iio_dev *indio_dev,
@@ -149,7 +150,7 @@ static int ina2xx_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_RAW:
ret = regmap_read(chip->regmap, chan->address, ®val);
- if (ret < 0)
+ if (ret)
return ret;
if (is_signed_reg(chan->address))
@@ -251,7 +252,7 @@ static int ina226_set_int_time_vbus(struct ina2xx_chip_info *chip,
return -EINVAL;
bits = find_closest(val_us, ina226_conv_time_tab,
- ARRAY_SIZE(ina226_conv_time_tab));
+ ARRAY_SIZE(ina226_conv_time_tab));
chip->int_time_vbus = ina226_conv_time_tab[bits];
@@ -270,7 +271,7 @@ static int ina226_set_int_time_vshunt(struct ina2xx_chip_info *chip,
return -EINVAL;
bits = find_closest(val_us, ina226_conv_time_tab,
- ARRAY_SIZE(ina226_conv_time_tab));
+ ARRAY_SIZE(ina226_conv_time_tab));
chip->int_time_vshunt = ina226_conv_time_tab[bits];
@@ -285,8 +286,8 @@ static int ina2xx_write_raw(struct iio_dev *indio_dev,
int val, int val2, long mask)
{
struct ina2xx_chip_info *chip = iio_priv(indio_dev);
- int ret;
unsigned int config, tmp;
+ int ret;
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
@@ -294,8 +295,8 @@ static int ina2xx_write_raw(struct iio_dev *indio_dev,
mutex_lock(&chip->state_lock);
ret = regmap_read(chip->regmap, INA2XX_CONFIG, &config);
- if (ret < 0)
- goto _err;
+ if (ret)
+ goto err;
tmp = config;
@@ -310,19 +311,19 @@ static int ina2xx_write_raw(struct iio_dev *indio_dev,
else
ret = ina226_set_int_time_vbus(chip, val2, &tmp);
break;
+
default:
ret = -EINVAL;
}
if (!ret && (tmp != config))
ret = regmap_write(chip->regmap, INA2XX_CONFIG, tmp);
-_err:
+err:
mutex_unlock(&chip->state_lock);
return ret;
}
-
static ssize_t ina2xx_allow_async_readout_show(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -355,6 +356,7 @@ static int set_shunt_resistor(struct ina2xx_chip_info *chip, unsigned int val)
return -EINVAL;
chip->shunt_resistor = val;
+
return 0;
}
@@ -408,21 +410,21 @@ static ssize_t ina2xx_shunt_resistor_store(struct device *dev,
* Sampling Freq is a consequence of the integration times of
* the Voltage channels.
*/
-#define INA2XX_CHAN_VOLTAGE(_index, _address) { \
- .type = IIO_VOLTAGE, \
- .address = (_address), \
- .indexed = 1, \
- .channel = (_index), \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
- BIT(IIO_CHAN_INFO_SCALE) | \
- BIT(IIO_CHAN_INFO_INT_TIME), \
- .scan_index = (_index), \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 16, \
- .storagebits = 16, \
- .endianness = IIO_LE, \
- } \
+#define INA2XX_CHAN_VOLTAGE(_index, _address) { \
+ .type = IIO_VOLTAGE, \
+ .address = (_address), \
+ .indexed = 1, \
+ .channel = (_index), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_INT_TIME), \
+ .scan_index = (_index), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_LE, \
+ } \
}
static const struct iio_chan_spec ina2xx_channels[] = {
@@ -500,7 +502,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
static int ina2xx_capture_thread(void *data)
{
- struct iio_dev *indio_dev = (struct iio_dev *)data;
+ struct iio_dev *indio_dev = data;
struct ina2xx_chip_info *chip = iio_priv(indio_dev);
unsigned int sampling_us = SAMPLING_PERIOD(chip);
int buffer_us;
@@ -575,8 +577,7 @@ static int ina2xx_debug_reg(struct iio_dev *indio_dev,
}
/* Possible integration times for vshunt and vbus */
-static IIO_CONST_ATTR_INT_TIME_AVAIL \
- ("0.000140 0.000204 0.000332 0.000588 0.001100 0.002116 0.004156 0.008244");
+static IIO_CONST_ATTR_INT_TIME_AVAIL("0.000140 0.000204 0.000332 0.000588 0.001100 0.002116 0.004156 0.008244");
static IIO_DEVICE_ATTR(in_allow_async_readout, S_IRUGO | S_IWUSR,
ina2xx_allow_async_readout_show,
@@ -598,21 +599,23 @@ static const struct attribute_group ina2xx_attribute_group = {
};
static const struct iio_info ina2xx_info = {
- .debugfs_reg_access = &ina2xx_debug_reg,
- .read_raw = &ina2xx_read_raw,
- .write_raw = &ina2xx_write_raw,
- .attrs = &ina2xx_attribute_group,
.driver_module = THIS_MODULE,
+ .attrs = &ina2xx_attribute_group,
+ .read_raw = ina2xx_read_raw,
+ .write_raw = ina2xx_write_raw,
+ .debugfs_reg_access = ina2xx_debug_reg,
};
/* Initialize the configuration and calibration registers. */
static int ina2xx_init(struct ina2xx_chip_info *chip, unsigned int config)
{
u16 regval;
- int ret = regmap_write(chip->regmap, INA2XX_CONFIG, config);
+ int ret;
- if (ret < 0)
+ ret = regmap_write(chip->regmap, INA2XX_CONFIG, config);
+ if (ret)
return ret;
+
/*
* Set current LSB to 1mA, shunt is in uOhms
* (equation 13 in datasheet). We hardcode a Current_LSB
@@ -621,7 +624,7 @@ static int ina2xx_init(struct ina2xx_chip_info *chip, unsigned int config)
* to the user for now.
*/
regval = DIV_ROUND_CLOSEST(chip->config->calibration_factor,
- chip->shunt_resistor);
+ chip->shunt_resistor);
return regmap_write(chip->regmap, INA2XX_CALIBRATION, regval);
}
@@ -632,8 +635,8 @@ static int ina2xx_probe(struct i2c_client *client,
struct ina2xx_chip_info *chip;
struct iio_dev *indio_dev;
struct iio_buffer *buffer;
- int ret;
unsigned int val;
+ int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
if (!indio_dev)
@@ -641,8 +644,19 @@ static int ina2xx_probe(struct i2c_client *client,
chip = iio_priv(indio_dev);
+ /* This is only used for device removal purposes. */
+ i2c_set_clientdata(client, indio_dev);
+
+ chip->regmap = devm_regmap_init_i2c(client, &ina2xx_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ dev_err(&client->dev, "failed to allocate register map\n");
+ return PTR_ERR(chip->regmap);
+ }
+
chip->config = &ina2xx_config[id->driver_data];
+ mutex_init(&chip->state_lock);
+
if (of_property_read_u32(client->dev.of_node,
"shunt-resistor", &val) < 0) {
struct ina2xx_platform_data *pdata =
@@ -658,25 +672,6 @@ static int ina2xx_probe(struct i2c_client *client,
if (ret)
return ret;
- mutex_init(&chip->state_lock);
-
- /* This is only used for device removal purposes. */
- i2c_set_clientdata(client, indio_dev);
-
- indio_dev->name = id->name;
- indio_dev->channels = ina2xx_channels;
- indio_dev->num_channels = ARRAY_SIZE(ina2xx_channels);
-
- indio_dev->dev.parent = &client->dev;
- indio_dev->info = &ina2xx_info;
- indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
-
- chip->regmap = devm_regmap_init_i2c(client, &ina2xx_regmap_config);
- if (IS_ERR(chip->regmap)) {
- dev_err(&client->dev, "failed to allocate register map\n");
- return PTR_ERR(chip->regmap);
- }
-
/* Patch the current config register with default. */
val = chip->config->config_default;
@@ -687,24 +682,28 @@ static int ina2xx_probe(struct i2c_client *client,
}
ret = ina2xx_init(chip, val);
- if (ret < 0) {
- dev_err(&client->dev, "error configuring the device: %d\n",
- ret);
- return -ENODEV;
+ if (ret) {
+ dev_err(&client->dev, "error configuring the device\n");
+ return ret;
}
+ indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->channels = ina2xx_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ina2xx_channels);
+ indio_dev->name = id->name;
+ indio_dev->info = &ina2xx_info;
+ indio_dev->setup_ops = &ina2xx_setup_ops;
+
buffer = devm_iio_kfifo_allocate(&indio_dev->dev);
if (!buffer)
return -ENOMEM;
- indio_dev->setup_ops = &ina2xx_setup_ops;
-
iio_device_attach_buffer(indio_dev, buffer);
return iio_device_register(indio_dev);
}
-
static int ina2xx_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
@@ -717,7 +716,6 @@ static int ina2xx_remove(struct i2c_client *client)
INA2XX_MODE_MASK, 0);
}
-
static const struct i2c_device_id ina2xx_id[] = {
{"ina219", ina219},
{"ina220", ina219},
@@ -726,7 +724,6 @@ static const struct i2c_device_id ina2xx_id[] = {
{"ina231", ina226},
{}
};
-
MODULE_DEVICE_TABLE(i2c, ina2xx_id);
static struct i2c_driver ina2xx_driver = {
@@ -737,7 +734,6 @@ static struct i2c_driver ina2xx_driver = {
.remove = ina2xx_remove,
.id_table = ina2xx_id,
};
-
module_i2c_driver(ina2xx_driver);
MODULE_AUTHOR("Marc Titinger <marc.titinger@xxxxxxxxxxxx>");
--
2.7.1