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path: root/drivers/staging/iio/meter/ade7754.c
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Diffstat (limited to 'drivers/staging/iio/meter/ade7754.c')
-rw-r--r--drivers/staging/iio/meter/ade7754.c103
1 files changed, 39 insertions, 64 deletions
diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c
index 378f2c8..33f0d32 100644
--- a/drivers/staging/iio/meter/ade7754.c
+++ b/drivers/staging/iio/meter/ade7754.c
@@ -8,7 +8,6 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
-#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/device.h>
@@ -17,6 +16,7 @@
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
+#include <linux/module.h>
#include "../iio.h"
#include "../sysfs.h"
@@ -29,7 +29,7 @@ static int ade7754_spi_write_reg_8(struct device *dev,
{
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7754_WRITE_REG(reg_address);
@@ -47,7 +47,7 @@ static int ade7754_spi_write_reg_16(struct device *dev,
{
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7754_WRITE_REG(reg_address);
@@ -64,7 +64,7 @@ static int ade7754_spi_read_reg_8(struct device *dev,
u8 *val)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r8(st->us, ADE7754_READ_REG(reg_address));
@@ -83,7 +83,7 @@ static int ade7754_spi_read_reg_16(struct device *dev,
u16 *val)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
int ret;
ret = spi_w8r16(st->us, ADE7754_READ_REG(reg_address));
@@ -105,7 +105,7 @@ static int ade7754_spi_read_reg_24(struct device *dev,
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
int ret;
struct spi_transfer xfers[] = {
{
@@ -388,10 +388,11 @@ static int ade7754_stop_device(struct device *dev)
return ade7754_spi_write_reg_8(dev, ADE7754_OPMODE, val);
}
-static int ade7754_initial_setup(struct ade7754_state *st)
+static int ade7754_initial_setup(struct iio_dev *indio_dev)
{
int ret;
- struct device *dev = &st->indio_dev->dev;
+ struct ade7754_state *st = iio_priv(indio_dev);
+ struct device *dev = &indio_dev->dev;
/* use low spi speed for init */
st->us->mode = SPI_MODE_3;
@@ -436,7 +437,7 @@ static ssize_t ade7754_write_frequency(struct device *dev,
size_t len)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ade7754_state *st = iio_dev_get_devdata(indio_dev);
+ struct ade7754_state *st = iio_priv(indio_dev);
unsigned long val;
int ret;
u8 reg, t;
@@ -471,8 +472,8 @@ out:
return ret ? ret : len;
}
static IIO_DEV_ATTR_TEMP_RAW(ade7754_read_8bit);
-static IIO_CONST_ATTR(temp_offset, "129 C");
-static IIO_CONST_ATTR(temp_scale, "4 C");
+static IIO_CONST_ATTR(in_temp_offset, "129 C");
+static IIO_CONST_ATTR(in_temp_scale, "4 C");
static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
ade7754_read_frequency,
@@ -483,9 +484,9 @@ static IIO_DEV_ATTR_RESET(ade7754_write_reset);
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("26000 13000 65000 33000");
static struct attribute *ade7754_attributes[] = {
- &iio_dev_attr_temp_raw.dev_attr.attr,
- &iio_const_attr_temp_offset.dev_attr.attr,
- &iio_const_attr_temp_scale.dev_attr.attr,
+ &iio_dev_attr_in_temp_raw.dev_attr.attr,
+ &iio_const_attr_in_temp_offset.dev_attr.attr,
+ &iio_const_attr_in_temp_scale.dev_attr.attr,
&iio_dev_attr_sampling_frequency.dev_attr.attr,
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
&iio_dev_attr_reset.dev_attr.attr,
@@ -534,63 +535,41 @@ static const struct iio_info ade7754_info = {
static int __devinit ade7754_probe(struct spi_device *spi)
{
- int ret, regdone = 0;
- struct ade7754_state *st = kzalloc(sizeof *st, GFP_KERNEL);
- if (!st) {
- ret = -ENOMEM;
+ int ret;
+ struct ade7754_state *st;
+ struct iio_dev *indio_dev;
+
+ /* setup the industrialio driver allocated elements */
+ indio_dev = iio_allocate_device(sizeof(*st));
+ if (indio_dev == NULL) {
+ ret = -ENOMEM;
goto error_ret;
}
/* this is only used for removal purposes */
- spi_set_drvdata(spi, st);
+ spi_set_drvdata(spi, indio_dev);
- /* Allocate the comms buffers */
- st->rx = kzalloc(sizeof(*st->rx)*ADE7754_MAX_RX, GFP_KERNEL);
- if (st->rx == NULL) {
- ret = -ENOMEM;
- goto error_free_st;
- }
- st->tx = kzalloc(sizeof(*st->tx)*ADE7754_MAX_TX, GFP_KERNEL);
- if (st->tx == NULL) {
- ret = -ENOMEM;
- goto error_free_rx;
- }
+ st = iio_priv(indio_dev);
st->us = spi;
mutex_init(&st->buf_lock);
- /* setup the industrialio driver allocated elements */
- st->indio_dev = iio_allocate_device(0);
- if (st->indio_dev == NULL) {
- ret = -ENOMEM;
- goto error_free_tx;
- }
- st->indio_dev->name = spi->dev.driver->name;
- st->indio_dev->dev.parent = &spi->dev;
- st->indio_dev->info = &ade7754_info;
- st->indio_dev->dev_data = (void *)(st);
- st->indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->name = spi->dev.driver->name;
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->info = &ade7754_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
- ret = iio_device_register(st->indio_dev);
+ /* Get the device into a sane initial state */
+ ret = ade7754_initial_setup(indio_dev);
if (ret)
goto error_free_dev;
- regdone = 1;
-
- /* Get the device into a sane initial state */
- ret = ade7754_initial_setup(st);
+ ret = iio_device_register(indio_dev);
if (ret)
goto error_free_dev;
+
return 0;
error_free_dev:
- if (regdone)
- iio_device_unregister(st->indio_dev);
- else
- iio_free_device(st->indio_dev);
-error_free_tx:
- kfree(st->tx);
-error_free_rx:
- kfree(st->rx);
-error_free_st:
- kfree(st);
+ iio_free_device(indio_dev);
+
error_ret:
return ret;
}
@@ -599,22 +578,18 @@ error_ret:
static int ade7754_remove(struct spi_device *spi)
{
int ret;
- struct ade7754_state *st = spi_get_drvdata(spi);
- struct iio_dev *indio_dev = st->indio_dev;
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ iio_device_unregister(indio_dev);
ret = ade7754_stop_device(&(indio_dev->dev));
if (ret)
goto err_ret;
- iio_device_unregister(indio_dev);
- kfree(st->tx);
- kfree(st->rx);
- kfree(st);
-
- return 0;
+ iio_free_device(indio_dev);
err_ret:
return ret;
+
}
static struct spi_driver ade7754_driver = {
generated by cgit v1.1 at 2024-04-19 04:16:44 +0000