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Commit a3684ded authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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staging:iio:dac:ad5504: 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 3ff24205

drivers/staging/iio/dac/ad5504.c

+41 −48
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ static ssize_t ad5504_write_dac(struct device *dev, 
				 const char *buf, size_t len)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);

	long readin;

	int ret;
@@ -73,7 +73,7 @@ static ssize_t ad5504_read_dac(struct device *dev, 
					   char *buf)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);

	int ret;

	u16 val;
@@ -89,7 +89,7 @@ static ssize_t ad5504_read_powerdown_mode(struct device *dev, 
				      struct device_attribute *attr, char *buf)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);



	const char mode[][14] = {"20kohm_to_gnd", "three_state"};
@@ -101,7 +101,7 @@ static ssize_t ad5504_write_powerdown_mode(struct device *dev, 
				       const char *buf, size_t len)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	int ret;



	if (sysfs_streq(buf, "20kohm_to_gnd"))
@@ -119,7 +119,7 @@ static ssize_t ad5504_read_dac_powerdown(struct device *dev, 
					   char *buf)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);



	return sprintf(buf, "%d\n",
@@ -133,7 +133,7 @@ static ssize_t ad5504_write_dac_powerdown(struct device *dev, 
	long readin;

	int ret;

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);



	ret = strict_strtol(buf, 10, &readin);
@@ -162,7 +162,7 @@ static ssize_t ad5504_show_scale(struct device *dev, 
				char *buf)

{

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct ad5504_state *st = iio_dev_get_devdata(indio_dev);

	struct ad5504_state *st = iio_priv(indio_dev);

	/* Corresponds to Vref / 2^(bits) */

	unsigned int scale_uv = (st->vref_mv * 1000) >> AD5505_BITS;
@@ -277,26 +277,27 @@ static const struct iio_info ad5501_info = { 
static int __devinit ad5504_probe(struct spi_device *spi)

{

	struct ad5504_platform_data *pdata = spi->dev.platform_data;

	struct iio_dev *indio_dev;

	struct ad5504_state *st;

	struct regulator *reg;

	int ret, voltage_uv = 0;



	st = kzalloc(sizeof(*st), GFP_KERNEL);

	if (st == NULL) {

		ret = -ENOMEM;

		goto error_ret;

	}



	spi_set_drvdata(spi, st);



	st->reg = regulator_get(&spi->dev, "vcc");

	if (!IS_ERR(st->reg)) {

		ret = regulator_enable(st->reg);

	reg = regulator_get(&spi->dev, "vcc");

	if (!IS_ERR(reg)) {

		ret = regulator_enable(reg);

		if (ret)

			goto error_put_reg;



		voltage_uv = regulator_get_voltage(st->reg);

		voltage_uv = regulator_get_voltage(reg);

	}



	indio_dev = iio_allocate_device(sizeof(*st));

	if (indio_dev == NULL) {

		ret = -ENOMEM;

		goto error_disable_reg;

	}

	spi_set_drvdata(spi, indio_dev);

	st = iio_priv(indio_dev);

	if (voltage_uv)

		st->vref_mv = voltage_uv / 1000;

	else if (pdata)
@@ -304,22 +305,17 @@ static int __devinit ad5504_probe(struct spi_device *spi) 
	else

		dev_warn(&spi->dev, "reference voltage unspecified\n");



	st->reg = reg;

	st->spi = spi;

	st->indio_dev = iio_allocate_device(0);

	if (st->indio_dev == NULL) {

		ret = -ENOMEM;

		goto error_disable_reg;

	}

	st->indio_dev->dev.parent = &spi->dev;

	st->indio_dev->name = spi_get_device_id(st->spi)->name;

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

	indio_dev->name = spi_get_device_id(st->spi)->name;

	if (spi_get_device_id(st->spi)->driver_data == ID_AD5501)

		st->indio_dev->info = &ad5501_info;

		indio_dev->info = &ad5501_info;

	else

		st->indio_dev->info = &ad5504_info;

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

	st->indio_dev->modes = INDIO_DIRECT_MODE;

		indio_dev->info = &ad5504_info;

	indio_dev->modes = INDIO_DIRECT_MODE;



	ret = iio_device_register(st->indio_dev);

	ret = iio_device_register(indio_dev);

	if (ret)

		goto error_free_dev;
@@ -329,7 +325,7 @@ static int __devinit ad5504_probe(struct spi_device *spi) 
					   &ad5504_event_handler,

					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

					   spi_get_device_id(st->spi)->name,

					   st->indio_dev);

					   indio_dev);

		if (ret)

			goto error_unreg_iio_device;

	}
@@ -337,37 +333,34 @@ static int __devinit ad5504_probe(struct spi_device *spi) 
	return 0;



error_unreg_iio_device:

	iio_device_unregister(st->indio_dev);

	iio_device_unregister(indio_dev);

error_free_dev:

	iio_free_device(st->indio_dev);

	iio_free_device(indio_dev);

error_disable_reg:

	if (!IS_ERR(st->reg))

	if (!IS_ERR(reg))

		regulator_disable(st->reg);

error_put_reg:

	if (!IS_ERR(st->reg))

		regulator_put(st->reg);

	if (!IS_ERR(reg))

		regulator_put(reg);



	kfree(st);

error_ret:

	return ret;

}



static int __devexit ad5504_remove(struct spi_device *spi)

{

	struct ad5504_state *st = spi_get_drvdata(spi);



	struct iio_dev *indio_dev = spi_get_drvdata(spi);

	struct ad5504_state *st = iio_priv(indio_dev);

	struct regulator *reg = st->reg;

	if (spi->irq)

		free_irq(spi->irq, st->indio_dev);

		free_irq(spi->irq, indio_dev);



	iio_device_unregister(st->indio_dev);

	iio_device_unregister(indio_dev);



	if (!IS_ERR(st->reg)) {

		regulator_disable(st->reg);

		regulator_put(st->reg);

	if (!IS_ERR(reg)) {

		regulator_disable(reg);

		regulator_put(reg);

	}



	kfree(st);



	return 0;

}

drivers/staging/iio/dac/ad5504.h

+0 −2
Original line number Diff line number Diff line
@@ -41,7 +41,6 @@ struct ad5504_platform_data { 


/**

 * struct ad5446_state - driver instance specific data

 * @indio_dev:		the industrial I/O device

 * @us:			spi_device

 * @reg:		supply regulator

 * @vref_mv:		actual reference voltage used
@@ -50,7 +49,6 @@ struct ad5504_platform_data { 
 */



struct ad5504_state {

	struct iio_dev			*indio_dev;

	struct spi_device		*spi;

	struct regulator		*reg;

	unsigned short			vref_mv;