From f4c794a2c16b1681759c39de7357de07296fd3fe Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 27 Jun 2011 13:07:22 +0100 Subject: [PATCH] staging:iio:adc:ad7152: allocate chip state with iio_dev and use iio_priv for access. Signed-off-by: Jonathan Cameron Acked-by: Michael Hennerich Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/adc/ad7152.c | 73 ++++++++++++++------------------ 1 file changed, 32 insertions(+), 41 deletions(-) diff --git a/drivers/staging/iio/adc/ad7152.c b/drivers/staging/iio/adc/ad7152.c index 7a38bcbbe1af..21f5f380fb5e 100644 --- a/drivers/staging/iio/adc/ad7152.c +++ b/drivers/staging/iio/adc/ad7152.c @@ -51,7 +51,6 @@ struct ad7152_chip_info { struct i2c_client *client; - struct iio_dev *indio_dev; u16 ch1_offset; /* Channel 1 offset calibration coefficient */ u16 ch1_gain; /* Channel 1 gain coefficient */ u8 ch1_setup; @@ -166,7 +165,7 @@ static ssize_t ad7152_show_ch1_value(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); u8 data[2]; ad7152_i2c_read(chip, AD7152_CH1_DATA_HIGH, data, 2); @@ -180,7 +179,7 @@ static ssize_t ad7152_show_ch2_value(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); u8 data[2]; ad7152_i2c_read(chip, AD7152_CH2_DATA_HIGH, data, 2); @@ -194,7 +193,7 @@ static ssize_t ad7152_show_conversion_mode(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "%s\n", chip->conversion_mode); } @@ -205,7 +204,7 @@ static ssize_t ad7152_store_conversion_mode(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); u8 cfg; int i; @@ -234,7 +233,7 @@ static ssize_t ad7152_show_ch1_offset(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "%d\n", chip->ch1_offset); } @@ -245,7 +244,7 @@ static ssize_t ad7152_store_ch1_offset(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -270,7 +269,7 @@ static ssize_t ad7152_show_ch2_offset(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "%d\n", chip->ch2_offset); } @@ -281,7 +280,7 @@ static ssize_t ad7152_store_ch2_offset(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -306,7 +305,7 @@ static ssize_t ad7152_show_ch1_gain(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "%d\n", chip->ch1_gain); } @@ -317,7 +316,7 @@ static ssize_t ad7152_store_ch1_gain(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -342,7 +341,7 @@ static ssize_t ad7152_show_ch2_gain(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "%d\n", chip->ch2_gain); } @@ -353,7 +352,7 @@ static ssize_t ad7152_store_ch2_gain(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -378,7 +377,7 @@ static ssize_t ad7152_show_ch1_setup(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "0x%02x\n", chip->ch1_setup); } @@ -389,7 +388,7 @@ static ssize_t ad7152_store_ch1_setup(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -413,7 +412,7 @@ static ssize_t ad7152_show_ch2_setup(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "0x%02x\n", chip->ch2_setup); } @@ -424,7 +423,7 @@ static ssize_t ad7152_store_ch2_setup(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -448,7 +447,7 @@ static ssize_t ad7152_show_filter_rate_setup(struct device *dev, char *buf) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); return sprintf(buf, "0x%02x\n", chip->filter_rate_setup); } @@ -459,7 +458,7 @@ static ssize_t ad7152_store_filter_rate_setup(struct device *dev, size_t len) { struct iio_dev *dev_info = dev_get_drvdata(dev); - struct ad7152_chip_info *chip = dev_info->dev_data; + struct ad7152_chip_info *chip = iio_priv(dev_info); unsigned long data; int ret; @@ -509,31 +508,27 @@ static int __devinit ad7152_probe(struct i2c_client *client, const struct i2c_device_id *id) { int ret = 0; - struct ad7152_chip_info *chip = kzalloc(sizeof(*chip), GFP_KERNEL); - if (chip == NULL) { + struct ad7152_chip_info *chip; + struct iio_dev *indio_dev; + + 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 */ - i2c_set_clientdata(client, chip); + i2c_set_clientdata(client, indio_dev); chip->client = client; - chip->indio_dev = iio_allocate_device(0); - if (chip->indio_dev == NULL) { - ret = -ENOMEM; - goto error_free_chip; - } - /* Echipabilish that the iio_dev is a child of the i2c device */ - chip->indio_dev->name = id->name; - chip->indio_dev->dev.parent = &client->dev; - chip->indio_dev->info = &ad7152_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 = &ad7152_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; @@ -542,20 +537,16 @@ static int __devinit ad7152_probe(struct i2c_client *client, return 0; 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 ad7152_remove(struct i2c_client *client) { - struct ad7152_chip_info *chip = i2c_get_clientdata(client); - struct iio_dev *indio_dev = chip->indio_dev; + struct iio_dev *indio_dev = i2c_get_clientdata(client); iio_device_unregister(indio_dev); - kfree(chip); return 0; } -- 2.20.1