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Commit b0011d6d authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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staging:iio:adc:ad7816: allocate chip state with iio_dev and use iio_priv to access. 



Again, get rid of unwanted iio_dev pointer in state.

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 febafb94

drivers/staging/iio/adc/ad7816.c

+33 −41
Original line number Diff line number Diff line
@@ -43,7 +43,6 @@ 


struct ad7816_chip_info {

	struct spi_device *spi_dev;

	struct iio_dev *indio_dev;

	u16 rdwr_pin;

	u16 convert_pin;

	u16 busy_pin;
@@ -113,7 +112,7 @@ static ssize_t ad7816_show_mode(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);



	if (chip->mode)

		return sprintf(buf, "power-save\n");
@@ -127,7 +126,7 @@ static ssize_t ad7816_store_mode(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);



	if (strcmp(buf, "full")) {

		gpio_set_value(chip->rdwr_pin, 1);
@@ -159,7 +158,7 @@ static ssize_t ad7816_show_channel(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);



	return sprintf(buf, "%d\n", chip->channel_id);

}
@@ -170,7 +169,7 @@ static ssize_t ad7816_store_channel(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);

	unsigned long data;

	int ret;
@@ -208,7 +207,7 @@ static ssize_t ad7816_show_value(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);

	u16 data;

	s8 value;

	int ret;
@@ -265,7 +264,7 @@ static ssize_t ad7816_show_oti(struct device *dev, 
		char *buf)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);

	int value;



	if (chip->channel_id > AD7816_CS_MAX) {
@@ -286,7 +285,7 @@ static inline ssize_t ad7816_set_oti(struct device *dev, 
		size_t len)

{

	struct iio_dev *dev_info = dev_get_drvdata(dev);

	struct ad7816_chip_info *chip = dev_info->dev_data;

	struct ad7816_chip_info *chip = iio_priv(dev_info);

	long value;

	u8 data;

	int ret;
@@ -345,6 +344,7 @@ static const struct iio_info ad7816_info = { 
static int __devinit ad7816_probe(struct spi_device *spi_dev)

{

	struct ad7816_chip_info *chip;

	struct iio_dev *indio_dev;

	unsigned short *pins = spi_dev->dev.platform_data;

	int ret = 0;

	int i;
@@ -354,13 +354,14 @@ static int __devinit ad7816_probe(struct spi_device *spi_dev) 
		return -EINVAL;

	}



	chip = kzalloc(sizeof(struct ad7816_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;

	}

	chip = iio_priv(indio_dev);

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

	dev_set_drvdata(&spi_dev->dev, chip);

	dev_set_drvdata(&spi_dev->dev, indio_dev);



	chip->spi_dev = spi_dev;

	for (i = 0; i <= AD7816_CS_MAX; i++)
@@ -373,7 +374,7 @@ static int __devinit ad7816_probe(struct spi_device *spi_dev) 
	if (ret) {

		dev_err(&spi_dev->dev, "Fail to request rdwr gpio PIN %d.\n",

			chip->rdwr_pin);

		goto error_free_chip;

		goto error_free_device;

	}

	gpio_direction_input(chip->rdwr_pin);

	ret = gpio_request(chip->convert_pin, spi_get_device_id(spi_dev)->name);
@@ -391,20 +392,14 @@ static int __devinit ad7816_probe(struct spi_device *spi_dev) 
	}

	gpio_direction_input(chip->busy_pin);



	chip->indio_dev = iio_allocate_device(0);

	if (chip->indio_dev == NULL) {

		ret = -ENOMEM;

		goto error_free_gpio;

	}

	chip->indio_dev->name = spi_get_device_id(spi_dev)->name;

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

	chip->indio_dev->info = &ad7816_info;

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

	chip->indio_dev->modes = INDIO_DIRECT_MODE;

	indio_dev->name = spi_get_device_id(spi_dev)->name;

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

	indio_dev->info = &ad7816_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;

		goto error_free_gpio;



	if (spi_dev->irq) {

		/* Only low trigger is supported in ad7816/7/8 */
@@ -412,47 +407,44 @@ static int __devinit ad7816_probe(struct spi_device *spi_dev) 
					   NULL,

					   &ad7816_event_handler,

					   IRQF_TRIGGER_LOW,

					   chip->indio_dev->name,

					   chip->indio_dev);

					   indio_dev->name,

					   indio_dev);

		if (ret)

			goto error_unreg_dev;

	}



	dev_info(&spi_dev->dev, "%s temperature sensor and ADC registered.\n",

			 chip->indio_dev->name);

			 indio_dev->name);



	return 0;



error_unreg_dev:

	iio_device_unregister(chip->indio_dev);

error_free_dev:

	iio_free_device(chip->indio_dev);

	iio_device_unregister(indio_dev);

error_free_gpio:

	gpio_free(chip->busy_pin);

error_free_gpio_convert:

	gpio_free(chip->convert_pin);

error_free_gpio_rdwr:

	gpio_free(chip->rdwr_pin);

error_free_chip:

	kfree(chip);



error_free_device:

	iio_free_device(indio_dev);

error_ret:

	return ret;

}



static int __devexit ad7816_remove(struct spi_device *spi_dev)

{

	struct ad7816_chip_info *chip = dev_get_drvdata(&spi_dev->dev);

	struct iio_dev *indio_dev = chip->indio_dev;

	struct iio_dev *indio_dev = dev_get_drvdata(&spi_dev->dev);

	struct ad7816_chip_info *chip = iio_priv(indio_dev);



	dev_set_drvdata(&spi_dev->dev, NULL);

	if (spi_dev->irq)

		free_irq(spi_dev->irq, indio_dev);

	iio_device_unregister(indio_dev);

	iio_free_device(chip->indio_dev);

	gpio_free(chip->busy_pin);

	gpio_free(chip->convert_pin);

	gpio_free(chip->rdwr_pin);

	kfree(chip);

	iio_device_unregister(indio_dev);

	iio_free_device(indio_dev);



	return 0;

}