From 937a9601211100269fdc8125017809976ec9b37f Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 27 Jun 2011 13:07:50 +0100 Subject: [PATCH] staging:iio:meter:ade7854: Allocate buffers in state and state with iio_dev. Requires moving a few things around, but should be no functional changes. Signed-off-by: Jonathan Cameron Acked-by: Michael Hennerich Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/meter/ade7854-i2c.c | 39 +++++++------ drivers/staging/iio/meter/ade7854-spi.c | 40 ++++++------- drivers/staging/iio/meter/ade7854.c | 76 ++++++++----------------- drivers/staging/iio/meter/ade7854.h | 36 ++++++------ 4 files changed, 81 insertions(+), 110 deletions(-) diff --git a/drivers/staging/iio/meter/ade7854-i2c.c b/drivers/staging/iio/meter/ade7854-i2c.c index 4578e7b7f460..dd7234353405 100644 --- a/drivers/staging/iio/meter/ade7854-i2c.c +++ b/drivers/staging/iio/meter/ade7854-i2c.c @@ -20,7 +20,7 @@ static int ade7854_i2c_write_reg_8(struct device *dev, { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->tx[0] = (reg_address >> 8) & 0xFF; @@ -39,7 +39,7 @@ static int ade7854_i2c_write_reg_16(struct device *dev, { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->tx[0] = (reg_address >> 8) & 0xFF; @@ -59,7 +59,7 @@ static int ade7854_i2c_write_reg_24(struct device *dev, { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->tx[0] = (reg_address >> 8) & 0xFF; @@ -80,7 +80,7 @@ static int ade7854_i2c_write_reg_32(struct device *dev, { int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->tx[0] = (reg_address >> 8) & 0xFF; @@ -101,7 +101,7 @@ static int ade7854_i2c_read_reg_8(struct device *dev, u8 *val) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; mutex_lock(&st->buf_lock); @@ -127,7 +127,7 @@ static int ade7854_i2c_read_reg_16(struct device *dev, u16 *val) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; mutex_lock(&st->buf_lock); @@ -153,7 +153,7 @@ static int ade7854_i2c_read_reg_24(struct device *dev, u32 *val) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; mutex_lock(&st->buf_lock); @@ -179,7 +179,7 @@ static int ade7854_i2c_read_reg_32(struct device *dev, u32 *val) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; mutex_lock(&st->buf_lock); @@ -204,13 +204,14 @@ static int __devinit ade7854_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { int ret; - struct ade7854_state *st = kzalloc(sizeof *st, GFP_KERNEL); - if (!st) { - ret = -ENOMEM; - return ret; - } - - i2c_set_clientdata(client, st); + struct ade7854_state *st; + struct iio_dev *indio_dev; + + indio_dev = iio_allocate_device(sizeof(*st)); + if (indio_dev == NULL) + return -ENOMEM; + st = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); st->read_reg_8 = ade7854_i2c_read_reg_8; st->read_reg_16 = ade7854_i2c_read_reg_16; st->read_reg_24 = ade7854_i2c_read_reg_24; @@ -222,11 +223,9 @@ static int __devinit ade7854_i2c_probe(struct i2c_client *client, st->i2c = client; st->irq = client->irq; - ret = ade7854_probe(st, &client->dev); - if (ret) { - kfree(st); - return ret; - } + ret = ade7854_probe(indio_dev, &client->dev); + if (ret) + iio_free_device(indio_dev); return ret; } diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c index 84da8fbde022..e0d10865590a 100644 --- a/drivers/staging/iio/meter/ade7854-spi.c +++ b/drivers/staging/iio/meter/ade7854-spi.c @@ -21,7 +21,7 @@ static int ade7854_spi_write_reg_8(struct device *dev, int ret; struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct spi_transfer xfer = { .tx_buf = st->tx, .bits_per_word = 8, @@ -49,7 +49,7 @@ static int ade7854_spi_write_reg_16(struct device *dev, int ret; struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct spi_transfer xfer = { .tx_buf = st->tx, .bits_per_word = 8, @@ -78,7 +78,7 @@ static int ade7854_spi_write_reg_24(struct device *dev, int ret; struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct spi_transfer xfer = { .tx_buf = st->tx, .bits_per_word = 8, @@ -108,7 +108,7 @@ static int ade7854_spi_write_reg_32(struct device *dev, int ret; struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct spi_transfer xfer = { .tx_buf = st->tx, .bits_per_word = 8, @@ -138,7 +138,7 @@ static int ade7854_spi_read_reg_8(struct device *dev, { struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; struct spi_transfer xfers[] = { { @@ -180,7 +180,7 @@ static int ade7854_spi_read_reg_16(struct device *dev, { struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; struct spi_transfer xfers[] = { { @@ -221,7 +221,7 @@ static int ade7854_spi_read_reg_24(struct device *dev, { struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; struct spi_transfer xfers[] = { { @@ -263,7 +263,7 @@ static int ade7854_spi_read_reg_32(struct device *dev, { struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; struct spi_transfer xfers[] = { { @@ -302,13 +302,14 @@ error_ret: static int __devinit ade7854_spi_probe(struct spi_device *spi) { int ret; - struct ade7854_state *st = kzalloc(sizeof *st, GFP_KERNEL); - if (!st) { - ret = -ENOMEM; - return ret; - } - - spi_set_drvdata(spi, st); + struct ade7854_state *st; + struct iio_dev *indio_dev; + + indio_dev = iio_allocate_device(sizeof(*st)); + if (indio_dev == NULL) + return -ENOMEM; + st = iio_priv(indio_dev); + spi_set_drvdata(spi, indio_dev); st->read_reg_8 = ade7854_spi_read_reg_8; st->read_reg_16 = ade7854_spi_read_reg_16; st->read_reg_24 = ade7854_spi_read_reg_24; @@ -320,11 +321,10 @@ static int __devinit ade7854_spi_probe(struct spi_device *spi) st->irq = spi->irq; st->spi = spi; - ret = ade7854_probe(st, &spi->dev); - if (ret) { - kfree(st); - return ret; - } + + ret = ade7854_probe(indio_dev, &spi->dev); + if (ret) + iio_free_device(indio_dev); return 0; } diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c index 44cd3ec546ae..b82659f43bc6 100644 --- a/drivers/staging/iio/meter/ade7854.c +++ b/drivers/staging/iio/meter/ade7854.c @@ -29,7 +29,7 @@ static ssize_t ade7854_read_8bit(struct device *dev, int ret; u8 val = 0; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); ret = st->read_reg_8(dev, this_attr->address, &val); @@ -46,7 +46,7 @@ static ssize_t ade7854_read_16bit(struct device *dev, int ret; u16 val = 0; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); ret = st->read_reg_16(dev, this_attr->address, &val); @@ -63,7 +63,7 @@ static ssize_t ade7854_read_24bit(struct device *dev, int ret; u32 val; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); ret = st->read_reg_24(dev, this_attr->address, &val); @@ -81,7 +81,7 @@ static ssize_t ade7854_read_32bit(struct device *dev, u32 val = 0; struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); ret = st->read_reg_32(dev, this_attr->address, &val); if (ret) @@ -97,7 +97,7 @@ static ssize_t ade7854_write_8bit(struct device *dev, { struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; long val; @@ -118,7 +118,7 @@ static ssize_t ade7854_write_16bit(struct device *dev, { struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; long val; @@ -139,7 +139,7 @@ static ssize_t ade7854_write_24bit(struct device *dev, { struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; long val; @@ -160,7 +160,7 @@ static ssize_t ade7854_write_32bit(struct device *dev, { struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; long val; @@ -177,7 +177,7 @@ error_ret: static int ade7854_reset(struct device *dev) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); u16 val; st->read_reg_16(dev, ADE7854_CONFIG, &val); @@ -426,7 +426,7 @@ static IIO_DEV_ATTR_CVAHR(ade7854_read_32bit, static int ade7854_set_irq(struct device *dev, bool enable) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ade7854_state *st = iio_dev_get_devdata(indio_dev); + struct ade7854_state *st = iio_priv(indio_dev); int ret; u32 irqen; @@ -449,10 +449,10 @@ error_ret: return ret; } -static int ade7854_initial_setup(struct ade7854_state *st) +static int ade7854_initial_setup(struct iio_dev *indio_dev) { int ret; - struct device *dev = &st->indio_dev->dev; + struct device *dev = &indio_dev->dev; /* Disable IRQ */ ret = ade7854_set_irq(dev, false); @@ -556,68 +556,40 @@ static const struct iio_info ade7854_info = { .driver_module = THIS_MODULE, }; -int ade7854_probe(struct ade7854_state *st, struct device *dev) +int ade7854_probe(struct iio_dev *indio_dev, struct device *dev) { int ret; - - /* Allocate the comms buffers */ - st->rx = kzalloc(sizeof(*st->rx)*ADE7854_MAX_RX, GFP_KERNEL); - if (st->rx == NULL) { - ret = -ENOMEM; - goto error_free_st; - } - st->tx = kzalloc(sizeof(*st->tx)*ADE7854_MAX_TX, GFP_KERNEL); - if (st->tx == NULL) { - ret = -ENOMEM; - goto error_free_rx; - } - mutex_init(&st->buf_lock); + struct ade7854_state *st = iio_priv(indio_dev); /* setup the industrialio driver allocated elements */ - st->indio_dev = iio_allocate_device(0); - if (st->indio_dev == NULL) { - ret = -ENOMEM; - goto error_free_tx; - } + mutex_init(&st->buf_lock); - st->indio_dev->dev.parent = dev; - st->indio_dev->info = &ade7854_info; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->dev.parent = dev; + indio_dev->info = &ade7854_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; /* Get the device into a sane initial state */ - ret = ade7854_initial_setup(st); + ret = ade7854_initial_setup(indio_dev); if (ret) goto error_unreg_dev; return 0; error_unreg_dev: - iio_device_unregister(st->indio_dev); + iio_device_unregister(indio_dev); error_free_dev: - 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; } EXPORT_SYMBOL(ade7854_probe); -int ade7854_remove(struct ade7854_state *st) +int ade7854_remove(struct iio_dev *indio_dev) { - struct iio_dev *indio_dev = st->indio_dev; - iio_device_unregister(indio_dev); - kfree(st->tx); - kfree(st->rx); - kfree(st); return 0; } diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h index 79a21109f4e2..2c96e8695d57 100644 --- a/drivers/staging/iio/meter/ade7854.h +++ b/drivers/staging/iio/meter/ade7854.h @@ -148,29 +148,29 @@ * struct ade7854_state - device instance specific data * @spi: actual spi_device * @indio_dev: industrial I/O device structure + * @buf_lock: mutex to protect tx and rx * @tx: transmit buffer * @rx: receive buffer - * @buf_lock: mutex to protect tx and rx **/ struct ade7854_state { - struct spi_device *spi; - struct i2c_client *i2c; - struct iio_dev *indio_dev; - u8 *tx; - u8 *rx; - int (*read_reg_8) (struct device *, u16, u8 *); - int (*read_reg_16) (struct device *, u16, u16 *); - int (*read_reg_24) (struct device *, u16, u32 *); - int (*read_reg_32) (struct device *, u16, u32 *); - int (*write_reg_8) (struct device *, u16, u8); - int (*write_reg_16) (struct device *, u16, u16); - int (*write_reg_24) (struct device *, u16, u32); - int (*write_reg_32) (struct device *, u16, u32); - int irq; - struct mutex buf_lock; + struct spi_device *spi; + struct i2c_client *i2c; + int (*read_reg_8) (struct device *, u16, u8 *); + int (*read_reg_16) (struct device *, u16, u16 *); + int (*read_reg_24) (struct device *, u16, u32 *); + int (*read_reg_32) (struct device *, u16, u32 *); + int (*write_reg_8) (struct device *, u16, u8); + int (*write_reg_16) (struct device *, u16, u16); + int (*write_reg_24) (struct device *, u16, u32); + int (*write_reg_32) (struct device *, u16, u32); + int irq; + struct mutex buf_lock; + u8 tx[ADE7854_MAX_TX] ____cacheline_aligned; + u8 rx[ADE7854_MAX_RX]; + }; -extern int ade7854_probe(struct ade7854_state *st, struct device *dev); -extern int ade7854_remove(struct ade7854_state *st); +extern int ade7854_probe(struct iio_dev *indio_dev, struct device *dev); +extern int ade7854_remove(struct iio_dev *indio_dev); #endif -- 2.20.1