diff options
Diffstat (limited to 'drivers/staging/iio/industrialio-core.c')
| -rw-r--r-- | drivers/staging/iio/industrialio-core.c | 70 |
1 files changed, 45 insertions, 25 deletions
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index aec9311b108c..19f897f3c85e 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -25,8 +25,8 @@ #include "iio.h" #include "iio_core.h" #include "iio_core_trigger.h" -#include "chrdev.h" #include "sysfs.h" +#include "events.h" /* IDA to assign each registered device a unique id*/ static DEFINE_IDA(iio_ida); @@ -77,17 +77,29 @@ static const char * const iio_modifier_names[] = { /* relies on pairs of these shared then separate */ static const char * const iio_chan_info_postfix[] = { - [IIO_CHAN_INFO_SCALE_SHARED/2] = "scale", - [IIO_CHAN_INFO_OFFSET_SHARED/2] = "offset", - [IIO_CHAN_INFO_CALIBSCALE_SHARED/2] = "calibscale", - [IIO_CHAN_INFO_CALIBBIAS_SHARED/2] = "calibbias", - [IIO_CHAN_INFO_PEAK_SHARED/2] = "peak_raw", - [IIO_CHAN_INFO_PEAK_SCALE_SHARED/2] = "peak_scale", - [IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED/2] - = "quadrature_correction_raw", - [IIO_CHAN_INFO_AVERAGE_RAW_SHARED/2] = "mean_raw", + [IIO_CHAN_INFO_SCALE] = "scale", + [IIO_CHAN_INFO_OFFSET] = "offset", + [IIO_CHAN_INFO_CALIBSCALE] = "calibscale", + [IIO_CHAN_INFO_CALIBBIAS] = "calibbias", + [IIO_CHAN_INFO_PEAK] = "peak_raw", + [IIO_CHAN_INFO_PEAK_SCALE] = "peak_scale", + [IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW] = "quadrature_correction_raw", + [IIO_CHAN_INFO_AVERAGE_RAW] = "mean_raw", + [IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY] + = "filter_low_pass_3db_frequency", }; +const struct iio_chan_spec +*iio_find_channel_from_si(struct iio_dev *indio_dev, int si) +{ + int i; + + for (i = 0; i < indio_dev->num_channels; i++) + if (indio_dev->channels[i].scan_index == si) + return &indio_dev->channels[i]; + return NULL; +} + /** * struct iio_detected_event_list - list element for events that have occurred * @list: linked list header @@ -169,8 +181,11 @@ static ssize_t iio_event_chrdev_read(struct file *filep, { struct iio_event_interface *ev_int = filep->private_data; struct iio_detected_event_list *el; + size_t len = sizeof(el->ev); int ret; - size_t len; + + if (count < len) + return -EINVAL; mutex_lock(&ev_int->event_list_lock); if (list_empty(&ev_int->det_events)) { @@ -192,7 +207,6 @@ static ssize_t iio_event_chrdev_read(struct file *filep, el = list_first_entry(&ev_int->det_events, struct iio_detected_event_list, list); - len = sizeof el->ev; if (copy_to_user(buf, &(el->ev), len)) { ret = -EFAULT; goto error_mutex_unlock; @@ -415,7 +429,7 @@ int __iio_device_attr_init(struct device_attribute *dev_attr, sysfs_attr_init(&dev_attr->attr); /* Build up postfix of <extend_name>_<modifier>_postfix */ - if (chan->modified) { + if (chan->modified && !generic) { if (chan->extend_name) full_postfix = kasprintf(GFP_KERNEL, "%s_%s_%s", iio_modifier_names[chan @@ -600,7 +614,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, chan, &iio_read_channel_info, &iio_write_channel_info, - (1 << i), + i/2, !(i%2), &indio_dev->dev, &indio_dev->channel_attr_list); @@ -665,10 +679,9 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev) if (indio_dev->name) attrcount++; - indio_dev->chan_attr_group.attrs - = kzalloc(sizeof(indio_dev->chan_attr_group.attrs[0])* - (attrcount + 1), - GFP_KERNEL); + indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1, + sizeof(indio_dev->chan_attr_group.attrs[0]), + GFP_KERNEL); if (indio_dev->chan_attr_group.attrs == NULL) { ret = -ENOMEM; goto error_clear_attrs; @@ -788,6 +801,9 @@ static ssize_t iio_ev_value_store(struct device *dev, unsigned long val; int ret; + if (!indio_dev->info->write_event_value) + return -EINVAL; + ret = strict_strtoul(buf, 10, &val); if (ret) return ret; @@ -958,10 +974,9 @@ static int iio_device_register_eventset(struct iio_dev *indio_dev) } indio_dev->event_interface->group.name = iio_event_group_name; - indio_dev->event_interface->group.attrs = - kzalloc(sizeof(indio_dev->event_interface->group.attrs[0]) - *(attrcount + 1), - GFP_KERNEL); + indio_dev->event_interface->group.attrs = kcalloc(attrcount + 1, + sizeof(indio_dev->event_interface->group.attrs[0]), + GFP_KERNEL); if (indio_dev->event_interface->group.attrs == NULL) { ret = -ENOMEM; goto error_free_setup_event_lines; @@ -1068,9 +1083,13 @@ static int iio_chrdev_open(struct inode *inode, struct file *filp) { struct iio_dev *indio_dev = container_of(inode->i_cdev, struct iio_dev, chrdev); + + if (test_and_set_bit(IIO_BUSY_BIT_POS, &indio_dev->flags)) + return -EBUSY; + filp->private_data = indio_dev; - return iio_chrdev_buffer_open(indio_dev); + return 0; } /** @@ -1078,8 +1097,9 @@ static int iio_chrdev_open(struct inode *inode, struct file *filp) **/ static int iio_chrdev_release(struct inode *inode, struct file *filp) { - iio_chrdev_buffer_release(container_of(inode->i_cdev, - struct iio_dev, chrdev)); + struct iio_dev *indio_dev = container_of(inode->i_cdev, + struct iio_dev, chrdev); + clear_bit(IIO_BUSY_BIT_POS, &indio_dev->flags); return 0; } |