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staging:iio:adc:ad7150: allocate chip state with iio_dev and use iio_…
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…priv to access.

V2 - actually allocate some space for the iio_priv data.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Jonathan Cameron authored and Greg Kroah-Hartman committed Jun 28, 2011
1 parent d8aea29 commit 46a6af3
Showing 1 changed file with 41 additions and 50 deletions.
91 changes: 41 additions & 50 deletions drivers/staging/iio/adc/ad7150.c
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,6 @@

struct ad7150_chip_info {
struct i2c_client *client;
struct iio_dev *indio_dev;
bool inter;
u16 ch1_threshold; /* Ch1 Threshold (in fixed threshold mode) */
u8 ch1_sensitivity; /* Ch1 Sensitivity (in adaptive threshold mode) */
Expand Down Expand Up @@ -184,7 +183,7 @@ static ssize_t ad7150_show_conversion_mode(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%s\n", chip->conversion_mode);
}
Expand All @@ -195,7 +194,7 @@ static ssize_t ad7150_store_conversion_mode(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
u8 cfg;
int i;

Expand Down Expand Up @@ -234,7 +233,7 @@ static ssize_t ad7150_show_ch1_value(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
u8 data[2];

ad7150_i2c_read(chip, AD7150_CH1_DATA_HIGH, data, 2);
Expand All @@ -248,7 +247,7 @@ static ssize_t ad7150_show_ch2_value(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
u8 data[2];

ad7150_i2c_read(chip, AD7150_CH2_DATA_HIGH, data, 2);
Expand All @@ -262,7 +261,7 @@ static ssize_t ad7150_show_threshold_mode(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%s\n", chip->threshold_mode);
}
Expand All @@ -273,7 +272,7 @@ static ssize_t ad7150_store_threshold_mode(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
u8 cfg;

ad7150_i2c_read(chip, AD7150_CFG, &cfg, 1);
Expand Down Expand Up @@ -305,7 +304,7 @@ static ssize_t ad7150_show_ch1_threshold(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch1_threshold);
}
Expand All @@ -316,7 +315,7 @@ static ssize_t ad7150_store_ch1_threshold(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -341,7 +340,7 @@ static ssize_t ad7150_show_ch2_threshold(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch2_threshold);
}
Expand All @@ -352,7 +351,7 @@ static ssize_t ad7150_store_ch2_threshold(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -377,7 +376,7 @@ static ssize_t ad7150_show_ch1_sensitivity(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch1_sensitivity);
}
Expand All @@ -388,7 +387,7 @@ static ssize_t ad7150_store_ch1_sensitivity(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -412,7 +411,7 @@ static ssize_t ad7150_show_ch2_sensitivity(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch2_sensitivity);
}
Expand All @@ -423,7 +422,7 @@ static ssize_t ad7150_store_ch2_sensitivity(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -447,7 +446,7 @@ static ssize_t ad7150_show_ch1_timeout(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch1_timeout);
}
Expand All @@ -458,7 +457,7 @@ static ssize_t ad7150_store_ch1_timeout(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -482,7 +481,7 @@ static ssize_t ad7150_show_ch2_timeout(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "%d\n", chip->ch2_timeout);
}
Expand All @@ -493,7 +492,7 @@ static ssize_t ad7150_store_ch2_timeout(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -517,7 +516,7 @@ static ssize_t ad7150_show_ch1_setup(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "0x%02x\n", chip->ch1_setup);
}
Expand All @@ -528,7 +527,7 @@ static ssize_t ad7150_store_ch1_setup(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -553,7 +552,7 @@ static ssize_t ad7150_show_ch2_setup(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "0x%02x\n", chip->ch2_setup);
}
Expand All @@ -564,7 +563,7 @@ static ssize_t ad7150_store_ch2_setup(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand All @@ -588,7 +587,7 @@ static ssize_t ad7150_show_powerdown_timer(struct device *dev,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);

return sprintf(buf, "0x%02x\n", chip->powerdown_timer);
}
Expand All @@ -599,7 +598,7 @@ static ssize_t ad7150_store_powerdown_timer(struct device *dev,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = dev_info->dev_data;
struct ad7150_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;

Expand Down Expand Up @@ -645,7 +644,7 @@ static const struct attribute_group ad7150_attribute_group = {
static irqreturn_t ad7150_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct ad7150_chip_info *chip = iio_dev_get_devdata(indio_dev);
struct ad7150_chip_info *chip = iio_priv(indio_dev);
u8 int_status;
s64 timestamp = iio_get_time_ns();

Expand Down Expand Up @@ -714,33 +713,29 @@ static int __devinit ad7150_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret = 0, regdone = 0;
struct ad7150_chip_info *chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
struct ad7150_chip_info *chip;
struct iio_dev *indio_dev;

indio_dev = iio_allocate_device(sizeof(*chip));
if (indio_dev == NULL) {
ret = -ENOMEM;
goto error_ret;
}

chip = iio_priv(indio_dev);
/* this is only used for device removal purposes */
i2c_set_clientdata(client, chip);
i2c_set_clientdata(client, indio_dev);

chip->client = client;

chip->indio_dev = iio_allocate_device(0);
if (chip->indio_dev == NULL) {
ret = -ENOMEM;
goto error_free_chip;
}

/* Establish that the iio_dev is a child of the i2c device */
chip->indio_dev->name = id->name;
chip->indio_dev->dev.parent = &client->dev;
indio_dev->name = id->name;
indio_dev->dev.parent = &client->dev;

chip->indio_dev->info = &ad7150_info;
chip->indio_dev->dev_data = (void *)(chip);
indio_dev->info = &ad7150_info;

chip->indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->modes = INDIO_DIRECT_MODE;

ret = iio_device_register(chip->indio_dev);
ret = iio_device_register(indio_dev);
if (ret)
goto error_free_dev;
regdone = 1;
Expand All @@ -752,7 +747,7 @@ static int __devinit ad7150_probe(struct i2c_client *client,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
"ad7150",
chip->indio_dev);
indio_dev);
if (ret)
goto error_free_dev;
}
Expand All @@ -763,24 +758,20 @@ static int __devinit ad7150_probe(struct i2c_client *client,

error_free_dev:
if (regdone)
iio_device_unregister(chip->indio_dev);
iio_device_unregister(indio_dev);
else
iio_free_device(chip->indio_dev);
error_free_chip:
kfree(chip);
iio_free_device(indio_dev);
error_ret:
return ret;
}

static int __devexit ad7150_remove(struct i2c_client *client)
{
struct ad7150_chip_info *chip = i2c_get_clientdata(client);
struct iio_dev *indio_dev = chip->indio_dev;
struct iio_dev *indio_dev = i2c_get_clientdata(client);

if (client->irq)
free_irq(client->irq, indio_dev);
iio_device_unregister(indio_dev);
kfree(chip);

return 0;
}
Expand Down

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