diff options
author | Jonathan Cameron <jic23@kernel.org> | 2013-09-08 14:57:00 +0100 |
---|---|---|
committer | Jonathan Cameron <jic23@kernel.org> | 2013-09-15 17:43:20 +0100 |
commit | 3704432fb1fd8ab2df114bad6df752381246b609 (patch) | |
tree | 554c46e264866bc2be767434586a68bf5ed7c75c /drivers/iio | |
parent | 9761696f2be276b169b77bcf359bc50a251c9280 (diff) |
iio: refactor info mask and ext_info attribute creation.
Introduce an enum to specify whether the attribute is separate or
shared.
Factor out the bitmap handling for loop into a separate function.
Tidy up error handling and add a NULL assignment to squish a false
positive warning from GCC.
Change ext_info shared type from boolean to enum and update in all
drivers.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Diffstat (limited to 'drivers/iio')
-rw-r--r-- | drivers/iio/dac/ad5064.c | 3 | ||||
-rw-r--r-- | drivers/iio/dac/ad5380.c | 4 | ||||
-rw-r--r-- | drivers/iio/dac/ad5446.c | 3 | ||||
-rw-r--r-- | drivers/iio/dac/ad5504.c | 4 | ||||
-rw-r--r-- | drivers/iio/dac/ad5624r_spi.c | 4 | ||||
-rw-r--r-- | drivers/iio/dac/ad5686.c | 3 | ||||
-rw-r--r-- | drivers/iio/dac/ad5755.c | 1 | ||||
-rw-r--r-- | drivers/iio/dac/ad5791.c | 5 | ||||
-rw-r--r-- | drivers/iio/dac/ad7303.c | 1 | ||||
-rw-r--r-- | drivers/iio/dac/mcp4725.c | 3 | ||||
-rw-r--r-- | drivers/iio/frequency/adf4350.c | 1 | ||||
-rw-r--r-- | drivers/iio/iio_core.h | 2 | ||||
-rw-r--r-- | drivers/iio/industrialio-buffer.c | 2 | ||||
-rw-r--r-- | drivers/iio/industrialio-core.c | 149 |
14 files changed, 105 insertions, 80 deletions
diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index a3a52be4852c..b18e8c4347c2 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -285,8 +285,9 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = { .name = "powerdown", .read = ad5064_read_dac_powerdown, .write = ad5064_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", false, &ad5064_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5064_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5064_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c index 1c44ae3920e2..4c791e66e0d7 100644 --- a/drivers/iio/dac/ad5380.c +++ b/drivers/iio/dac/ad5380.c @@ -247,8 +247,10 @@ static struct iio_chan_spec_ext_info ad5380_ext_info[] = { .name = "powerdown", .read = ad5380_read_dac_powerdown, .write = ad5380_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", true, &ad5380_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad5380_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5380_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c index 96e9ed4c2d01..6dcb6d93f0e4 100644 --- a/drivers/iio/dac/ad5446.c +++ b/drivers/iio/dac/ad5446.c @@ -132,8 +132,9 @@ static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = { .name = "powerdown", .read = ad5446_read_dac_powerdown, .write = ad5446_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", false, &ad5446_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5446_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5446_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index caffb16bc05c..31f4ff29f914 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -248,8 +248,10 @@ static const struct iio_chan_spec_ext_info ad5504_ext_info[] = { .name = "powerdown", .read = ad5504_read_dac_powerdown, .write = ad5504_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", true, &ad5504_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad5504_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5504_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c index 714af757cd56..dbb1289cc7a6 100644 --- a/drivers/iio/dac/ad5624r_spi.c +++ b/drivers/iio/dac/ad5624r_spi.c @@ -163,8 +163,10 @@ static const struct iio_chan_spec_ext_info ad5624r_ext_info[] = { .name = "powerdown", .read = ad5624r_read_dac_powerdown, .write = ad5624r_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", true, &ad5624r_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad5624r_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5624r_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 3e1080feedbf..f472b48445f6 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -264,8 +264,9 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = { .name = "powerdown", .read = ad5686_read_dac_powerdown, .write = ad5686_write_dac_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", false, &ad5686_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5686_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5686_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index 36a4361aece1..f305a0c83418 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -386,6 +386,7 @@ static const struct iio_chan_spec_ext_info ad5755_ext_info[] = { .name = "powerdown", .read = ad5755_read_powerdown, .write = ad5755_write_powerdown, + .shared = IIO_SEPARATE, }, { }, }; diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index ce7458963309..3cee89be68c3 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -287,11 +287,12 @@ static int ad5791_read_raw(struct iio_dev *indio_dev, static const struct iio_chan_spec_ext_info ad5791_ext_info[] = { { .name = "powerdown", - .shared = true, + .shared = IIO_SHARED_BY_TYPE, .read = ad5791_read_dac_powerdown, .write = ad5791_write_dac_powerdown, }, - IIO_ENUM("powerdown_mode", true, &ad5791_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad5791_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &ad5791_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index ed2d276477bd..d0505fd22ef4 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -169,6 +169,7 @@ static const struct iio_chan_spec_ext_info ad7303_ext_info[] = { .name = "powerdown", .read = ad7303_read_dac_powerdown, .write = ad7303_write_dac_powerdown, + .shared = IIO_SEPARATE, }, { }, }; diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 1f4a48e6a82c..6711a33b16ba 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -195,8 +195,9 @@ static const struct iio_chan_spec_ext_info mcp4725_ext_info[] = { .name = "powerdown", .read = mcp4725_read_powerdown, .write = mcp4725_write_powerdown, + .shared = IIO_SEPARATE, }, - IIO_ENUM("powerdown_mode", false, &mcp4725_powerdown_mode_enum), + IIO_ENUM("powerdown_mode", IIO_SEPARATE, &mcp4725_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", &mcp4725_powerdown_mode_enum), { }, }; diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c index a7b30be86ae0..85152547aa8b 100644 --- a/drivers/iio/frequency/adf4350.c +++ b/drivers/iio/frequency/adf4350.c @@ -351,6 +351,7 @@ static ssize_t adf4350_read(struct iio_dev *indio_dev, .read = adf4350_read, \ .write = adf4350_write, \ .private = _ident, \ + .shared = IIO_SEPARATE, \ } static const struct iio_chan_spec_ext_info adf4350_ext_info[] = { diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h index 05c1b74502a3..6be5ab864b1a 100644 --- a/drivers/iio/iio_core.h +++ b/drivers/iio/iio_core.h @@ -30,7 +30,7 @@ int __iio_add_chan_devattr(const char *postfix, const char *buf, size_t len), u64 mask, - bool generic, + enum iio_shared_by shared_by, struct device *dev, struct list_head *attr_list); diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 96e97ad2538c..7ea2edbf7614 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -208,7 +208,7 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev, &iio_show_scan_index, NULL, 0, - 0, + IIO_SEPARATE, &indio_dev->dev, &buffer->scan_el_dev_attr_list); if (ret) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 2cb4841d5357..d380c7278a26 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -517,14 +517,15 @@ int __iio_device_attr_init(struct device_attribute *dev_attr, struct device_attribute *attr, const char *buf, size_t len), - bool generic) + enum iio_shared_by shared_by) { - int ret; - char *name_format, *full_postfix; + int ret = 0; + char *name_format = NULL; + char *full_postfix; sysfs_attr_init(&dev_attr->attr); /* Build up postfix of <extend_name>_<modifier>_postfix */ - if (chan->modified && !generic) { + if (chan->modified && (shared_by == IIO_SEPARATE)) { if (chan->extend_name) full_postfix = kasprintf(GFP_KERNEL, "%s_%s_%s", iio_modifier_names[chan @@ -545,53 +546,62 @@ int __iio_device_attr_init(struct device_attribute *dev_attr, chan->extend_name, postfix); } - if (full_postfix == NULL) { - ret = -ENOMEM; - goto error_ret; - } + if (full_postfix == NULL) + return -ENOMEM; if (chan->differential) { /* Differential can not have modifier */ - if (generic) + switch (shared_by) { + case IIO_SHARED_BY_TYPE: name_format = kasprintf(GFP_KERNEL, "%s_%s-%s_%s", iio_direction[chan->output], iio_chan_type_name_spec[chan->type], iio_chan_type_name_spec[chan->type], full_postfix); - else if (chan->indexed) + break; + case IIO_SEPARATE: + if (!chan->indexed) { + WARN_ON("Differential channels must be indexed\n"); + ret = -EINVAL; + goto error_free_full_postfix; + } name_format - = kasprintf(GFP_KERNEL, "%s_%s%d-%s%d_%s", + = kasprintf(GFP_KERNEL, + "%s_%s%d-%s%d_%s", iio_direction[chan->output], iio_chan_type_name_spec[chan->type], chan->channel, iio_chan_type_name_spec[chan->type], chan->channel2, full_postfix); - else { - WARN_ON("Differential channels must be indexed\n"); - ret = -EINVAL; - goto error_free_full_postfix; + break; } } else { /* Single ended */ - if (generic) - name_format - = kasprintf(GFP_KERNEL, "%s_%s_%s", - iio_direction[chan->output], - iio_chan_type_name_spec[chan->type], - full_postfix); - else if (chan->indexed) - name_format - = kasprintf(GFP_KERNEL, "%s_%s%d_%s", - iio_direction[chan->output], - iio_chan_type_name_spec[chan->type], - chan->channel, - full_postfix); - else + switch (shared_by) { + case IIO_SHARED_BY_TYPE: name_format = kasprintf(GFP_KERNEL, "%s_%s_%s", iio_direction[chan->output], iio_chan_type_name_spec[chan->type], full_postfix); + break; + + case IIO_SEPARATE: + if (chan->indexed) + name_format + = kasprintf(GFP_KERNEL, "%s_%s%d_%s", + iio_direction[chan->output], + iio_chan_type_name_spec[chan->type], + chan->channel, + full_postfix); + else + name_format + = kasprintf(GFP_KERNEL, "%s_%s_%s", + iio_direction[chan->output], + iio_chan_type_name_spec[chan->type], + full_postfix); + break; + } } if (name_format == NULL) { ret = -ENOMEM; @@ -615,16 +625,11 @@ int __iio_device_attr_init(struct device_attribute *dev_attr, dev_attr->attr.mode |= S_IWUSR; dev_attr->store = writefunc; } - kfree(name_format); - kfree(full_postfix); - - return 0; - error_free_name_format: kfree(name_format); error_free_full_postfix: kfree(full_postfix); -error_ret: + return ret; } @@ -643,7 +648,7 @@ int __iio_add_chan_devattr(const char *postfix, const char *buf, size_t len), u64 mask, - bool generic, + enum iio_shared_by shared_by, struct device *dev, struct list_head *attr_list) { @@ -657,7 +662,7 @@ int __iio_add_chan_devattr(const char *postfix, } ret = __iio_device_attr_init(&iio_attr->dev_attr, postfix, chan, - readfunc, writefunc, generic); + readfunc, writefunc, shared_by); if (ret) goto error_iio_dev_attr_free; iio_attr->c = chan; @@ -665,7 +670,7 @@ int __iio_add_chan_devattr(const char *postfix, list_for_each_entry(t, attr_list, l) if (strcmp(t->dev_attr.attr.name, iio_attr->dev_attr.attr.name) == 0) { - if (!generic) + if (shared_by == IIO_SEPARATE) dev_err(dev, "tried to double register : %s\n", t->dev_attr.attr.name); ret = -EBUSY; @@ -683,46 +688,54 @@ error_ret: return ret; } -static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan) +static int iio_device_add_info_mask_type(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + enum iio_shared_by shared_by, + const long *infomask) { - int ret, attrcount = 0; - int i; - const struct iio_chan_spec_ext_info *ext_info; + int i, ret, attrcount = 0; - if (chan->channel < 0) - return 0; - for_each_set_bit(i, &chan->info_mask_separate, sizeof(long)*8) { + for_each_set_bit(i, infomask, sizeof(infomask)*8) { ret = __iio_add_chan_devattr(iio_chan_info_postfix[i], chan, &iio_read_channel_info, &iio_write_channel_info, i, - 0, + shared_by, &indio_dev->dev, &indio_dev->channel_attr_list); - if (ret < 0) - goto error_ret; - attrcount++; - } - for_each_set_bit(i, &chan->info_mask_shared_by_type, sizeof(long)*8) { - ret = __iio_add_chan_devattr(iio_chan_info_postfix[i], - chan, - &iio_read_channel_info, - &iio_write_channel_info, - i, - 1, - &indio_dev->dev, - &indio_dev->channel_attr_list); - if (ret == -EBUSY) { - ret = 0; + if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE)) continue; - } else if (ret < 0) { - goto error_ret; - } + else if (ret < 0) + return ret; attrcount++; } + return attrcount; +} + +static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan) +{ + int ret, attrcount = 0; + const struct iio_chan_spec_ext_info *ext_info; + + if (chan->channel < 0) + return 0; + ret = iio_device_add_info_mask_type(indio_dev, chan, + IIO_SEPARATE, + &chan->info_mask_separate); + if (ret < 0) + return ret; + attrcount += ret; + + ret = iio_device_add_info_mask_type(indio_dev, chan, + IIO_SHARED_BY_TYPE, + &chan->info_mask_shared_by_type); + if (ret < 0) + return ret; + attrcount += ret; + if (chan->ext_info) { unsigned int i = 0; for (ext_info = chan->ext_info; ext_info->name; ext_info++) { @@ -741,15 +754,13 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, continue; if (ret) - goto error_ret; + return ret; attrcount++; } } - ret = attrcount; -error_ret: - return ret; + return attrcount; } static void iio_device_remove_and_free_read_attr(struct iio_dev *indio_dev, |