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Commit d4397972 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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staging:iio:adc:ad7291: allocate chip state with iio_dev and use iio_priv for access. 



Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Acked-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f4c794a2

drivers/staging/iio/adc/ad7291.c

+37 −48
Original line number Diff line number Diff line
@@ -61,7 +61,6 @@ 


struct ad7291_chip_info {

	struct i2c_client *client;

	struct iio_dev *indio_dev;

	u16 command;

	u8  channels;	/* Active voltage channels */

};
@@ -157,7 +156,7 @@ static ssize_t ad7291_show_mode(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);



	if (chip->command & AD7291_AUTOCYCLE)

		return sprintf(buf, "autocycle\n");
@@ -171,7 +170,7 @@ static ssize_t ad7291_store_mode(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 command;

	int ret;
@@ -208,7 +207,7 @@ static ssize_t ad7291_store_reset(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 command;

	int ret;
@@ -231,7 +230,7 @@ static ssize_t ad7291_show_ext_ref(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);



	return sprintf(buf, "%d\n", !!(chip->command & AD7291_EXT_REF));

}
@@ -242,7 +241,7 @@ static ssize_t ad7291_store_ext_ref(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 command;

	int ret;
@@ -269,7 +268,7 @@ static ssize_t ad7291_show_noise_delay(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);



	return sprintf(buf, "%d\n", !!(chip->command & AD7291_NOISE_DELAY));

}
@@ -280,7 +279,7 @@ static ssize_t ad7291_store_noise_delay(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 command;

	int ret;
@@ -307,7 +306,7 @@ static ssize_t ad7291_show_t_sense(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 data;

	char sign = ' ';

	int ret;
@@ -334,7 +333,7 @@ static ssize_t ad7291_show_t_average(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 data;

	char sign = ' ';

	int ret;
@@ -361,7 +360,7 @@ static ssize_t ad7291_show_voltage(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 data[AD7291_VOLTAGE_LIMIT_COUNT];

	int i, size, ret;
@@ -390,7 +389,7 @@ static ssize_t ad7291_show_channel_mask(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);



	return sprintf(buf, "0x%x\n", (chip->command & AD7291_VOLTAGE_MASK) >>

			AD7291_VOLTAGE_OFFSET);
@@ -402,7 +401,7 @@ static ssize_t ad7291_store_channel_mask(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 command;

	unsigned long data;

	int i, ret;
@@ -457,7 +456,7 @@ static const struct attribute_group ad7291_attribute_group = { 
static irqreturn_t ad7291_event_handler(int irq, void *private)

{

	struct iio_dev *indio_dev = private;

	struct ad7291_chip_info *chip = iio_dev_get_devdata(private);

	struct ad7291_chip_info *chip = iio_priv(private);

	u16 t_status, v_status;

	u16 command;

	int i;
@@ -532,7 +531,7 @@ static inline ssize_t ad7291_show_t_bound(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);

	u16 data;

	char sign = ' ';
@@ -560,7 +559,7 @@ static inline ssize_t ad7291_set_t_bound(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);

	long tmp1, tmp2;

	u16 data;
@@ -608,7 +607,7 @@ static inline ssize_t ad7291_show_v_bound(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	u16 data;

	int ret;
@@ -633,7 +632,7 @@ static inline ssize_t ad7291_set_v_bound(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7291_chip_info *chip = dev_info->dev_data;

	struct ad7291_chip_info *chip = iio_priv(dev_info);

	unsigned long value;

	u16 data;

	int ret;
@@ -792,32 +791,26 @@ static int __devinit ad7291_probe(struct i2c_client *client, 
		const struct i2c_device_id *id)

{

	struct ad7291_chip_info *chip;

	struct iio_dev *indio_dev;

	int ret = 0;



	chip = kzalloc(sizeof(struct ad7291_chip_info), GFP_KERNEL);



	if (chip == NULL)

		return -ENOMEM;



	indio_dev = iio_allocate_device(sizeof(*chip));

	if (indio_dev == NULL) {

		ret = -ENOMEM;

		goto error_ret;

	}

	/* this is only used for device removal purposes */

	i2c_set_clientdata(client, chip);

	i2c_set_clientdata(client, indio_dev);



	chip->client = client;

	chip->command = AD7291_NOISE_DELAY | AD7291_T_SENSE_MASK;



	chip->indio_dev = iio_allocate_device(0);

	if (chip->indio_dev == NULL) {

		ret = -ENOMEM;

		goto error_free_chip;

	}



	chip->indio_dev->name = id->name;

	chip->indio_dev->dev.parent = &client->dev;

	chip->indio_dev->info = &ad7291_info;

	chip->indio_dev->dev_data = (void *)chip;

	chip->indio_dev->modes = INDIO_DIRECT_MODE;

	indio_dev->name = id->name;

	indio_dev->dev.parent = &client->dev;

	indio_dev->info = &ad7291_info;

	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;
@@ -827,7 +820,7 @@ static int __devinit ad7291_probe(struct i2c_client *client, 
					   &ad7291_event_handler,

					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,

					   id->name,

					   chip->indio_dev);

					   indio_dev);

		if (ret)

			goto error_unreg_dev;
@@ -847,27 +840,23 @@ static int __devinit ad7291_probe(struct i2c_client *client, 
	return 0;



error_unreg_irq:

	free_irq(client->irq, chip->indio_dev);

	free_irq(client->irq, indio_dev);

error_unreg_dev:

	iio_device_unregister(chip->indio_dev);

	iio_device_unregister(indio_dev);

error_free_dev:

	iio_free_device(chip->indio_dev);

error_free_chip:

	kfree(chip);



	iio_free_device(indio_dev);

error_ret:

	return ret;

}



static int __devexit ad7291_remove(struct i2c_client *client)

{

	struct ad7291_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, chip->indio_dev);

		free_irq(client->irq, indio_dev);

	iio_device_unregister(indio_dev);

	iio_free_device(chip->indio_dev);

	kfree(chip);

	iio_free_device(indio_dev);



	return 0;

}