diff options
Diffstat (limited to 'drivers/staging/iio/meter/ade7754.c')
| -rw-r--r-- | drivers/staging/iio/meter/ade7754.c | 80 |
1 files changed, 29 insertions, 51 deletions
diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c index 378f2c87086f..f4f85fd5619b 100644 --- a/drivers/staging/iio/meter/ade7754.c +++ b/drivers/staging/iio/meter/ade7754.c @@ -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; @@ -535,62 +536,44 @@ 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; + 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); + ret = iio_device_register(indio_dev); if (ret) goto error_free_dev; regdone = 1; /* Get the device into a sane initial state */ - ret = ade7754_initial_setup(st); + ret = ade7754_initial_setup(indio_dev); if (ret) goto error_free_dev; return 0; error_free_dev: if (regdone) - iio_device_unregister(st->indio_dev); + iio_device_unregister(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 +582,17 @@ 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); 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; err_ret: return ret; + } static struct spi_driver ade7754_driver = { |