int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
if (ret < 0)
goto error_ret;
if (ret) {
- data = kmalloc(dev_info->ring->access.get_bpd(dev_info->ring),
+ data = kmalloc(dev_info->ring->access.get_bytes_per_datum(dev_info->ring),
GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
}
/* only valid if resolution is kept at 11bits */
-static int sca3000_ring_get_bpd(struct iio_ring_buffer *r)
+static int sca3000_ring_get_bytes_per_datum(struct iio_ring_buffer *r)
{
return 6;
}
}
static IIO_RING_ENABLE_ATTR;
-static IIO_RING_BPS_ATTR;
+static IIO_RING_BYTES_PER_DATUM_ATTR;
static IIO_RING_LENGTH_ATTR;
/**
*/
static struct attribute *sca3000_ring_attributes[] = {
&dev_attr_length.attr,
- &dev_attr_bps.attr,
- &dev_attr_ring_enable.attr,
+ &dev_attr_bytes_per_datum.attr,
+ &dev_attr_enable.attr,
NULL,
};
indio_dev->ring->access.rip_lots = &sca3000_rip_hw_rb;
indio_dev->ring->access.get_length = &sca3000_ring_get_length;
- indio_dev->ring->access.get_bpd = &sca3000_ring_get_bpd;
+ indio_dev->ring->access.get_bytes_per_datum = &sca3000_ring_get_bytes_per_datum;
return 0;
}
max1363_set_scan_mode(st);
numvals = hweight_long(st->current_mode->modemask);
- if (indio_dev->ring->access.set_bpd) {
+ if (indio_dev->ring->access.set_bytes_per_datum) {
if (st->chip_info->bits != 8)
d_size = numvals*2 + sizeof(s64);
else
d_size = numvals + sizeof(s64);
if (d_size % 8)
d_size += 8 - (d_size % 8);
- indio_dev->ring->access.set_bpd(indio_dev->ring, d_size);
+ indio_dev->ring->access.set_bytes_per_datum(indio_dev->ring, d_size);
}
return 0;
int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
int i = 0;
s16 *data;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
}
EXPORT_SYMBOL(iio_write_ring_length);
-ssize_t iio_read_ring_bps(struct device *dev,
+ssize_t iio_read_ring_bytes_per_datum(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int len = 0;
struct iio_ring_buffer *ring = dev_get_drvdata(dev);
- if (ring->access.get_bpd)
+ if (ring->access.get_bytes_per_datum)
len = sprintf(buf, "%d\n",
- ring->access.get_bpd(ring));
+ ring->access.get_bytes_per_datum(ring));
return len;
}
-EXPORT_SYMBOL(iio_read_ring_bps);
+EXPORT_SYMBOL(iio_read_ring_bytes_per_datum);
ssize_t iio_store_ring_enable(struct device *dev,
struct device_attribute *attr,
* change.
* @request_update: if a parameter change has been marked, update underlying
* storage.
- * @get_bpd: get current bytes per datum
- * @set_bpd: set number of bytes per datum
+ * @get_bytes_per_datum: get current bytes per datum
+ * @set_bytes_per_datum: set number of bytes per datum
* @get_length: get number of datums in ring
* @set_length: set number of datums in ring
* @is_enabled: query if ring is currently being used
int (*mark_param_change)(struct iio_ring_buffer *ring);
int (*request_update)(struct iio_ring_buffer *ring);
- int (*get_bpd)(struct iio_ring_buffer *ring);
- int (*set_bpd)(struct iio_ring_buffer *ring, size_t bpd);
+ int (*get_bytes_per_datum)(struct iio_ring_buffer *ring);
+ int (*set_bytes_per_datum)(struct iio_ring_buffer *ring, size_t bpd);
int (*get_length)(struct iio_ring_buffer *ring);
int (*set_length)(struct iio_ring_buffer *ring, int length);
* @id: unique id number
* @access_id: device id number
* @length: [DEVICE] number of datums in ring
- * @bpd: [DEVICE] size of individual datum including timestamp
+ * @bytes_per_datum [DEVICE] size of individual datum including timestamp
* @bpe: [DEVICE] size of individual channel value
* @loopcount: [INTERN] number of times the ring has looped
* @access_handler: [INTERN] chrdev access handling
int id;
int access_id;
int length;
- int bpd;
+ int bytes_per_datum;
int bpe;
int loopcount;
struct iio_handler access_handler;
static inline void __iio_update_ring_buffer(struct iio_ring_buffer *ring,
int bytes_per_datum, int length)
{
- ring->bpd = bytes_per_datum;
+ ring->bytes_per_datum = bytes_per_datum;
ring->length = length;
ring->loopcount = 0;
}
struct device_attribute *attr,
const char *buf,
size_t len);
-ssize_t iio_read_ring_bps(struct device *dev,
+ssize_t iio_read_ring_bytes_per_datum(struct device *dev,
struct device_attribute *attr,
char *buf);
ssize_t iio_store_ring_enable(struct device *dev,
#define IIO_RING_LENGTH_ATTR DEVICE_ATTR(length, S_IRUGO | S_IWUSR, \
iio_read_ring_length, \
iio_write_ring_length)
-#define IIO_RING_BPS_ATTR DEVICE_ATTR(bps, S_IRUGO | S_IWUSR, \
- iio_read_ring_bps, NULL)
-#define IIO_RING_ENABLE_ATTR DEVICE_ATTR(ring_enable, S_IRUGO | S_IWUSR, \
+#define IIO_RING_BYTES_PER_DATUM_ATTR DEVICE_ATTR(bytes_per_datum, S_IRUGO | S_IWUSR, \
+ iio_read_ring_bytes_per_datum, NULL)
+#define IIO_RING_ENABLE_ATTR DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, \
iio_show_ring_enable, \
iio_store_ring_enable)
#else /* CONFIG_IIO_RING_BUFFER */
if ((length == 0) || (bytes_per_datum == 0))
return -EINVAL;
__iio_update_ring_buffer(&ring->buf, bytes_per_datum, length);
- ring->data = kmalloc(length*ring->buf.bpd, GFP_ATOMIC);
+ ring->data = kmalloc(length*ring->buf.bytes_per_datum, GFP_ATOMIC);
ring->read_p = NULL;
ring->write_p = NULL;
ring->last_written_p = NULL;
* as long as the read pointer is valid before this
* passes it - guaranteed as set later in this function.
*/
- ring->half_p = ring->data - ring->buf.length*ring->buf.bpd/2;
+ ring->half_p = ring->data - ring->buf.length*ring->buf.bytes_per_datum/2;
}
/* Copy data to where ever the current write pointer says */
- memcpy(ring->write_p, data, ring->buf.bpd);
+ memcpy(ring->write_p, data, ring->buf.bytes_per_datum);
barrier();
/* Update the pointer used to get most recent value.
* Always valid as either points to latest or second latest value.
/* temp_ptr used to ensure we never have an invalid pointer
* it may be slightly lagging, but never invalid
*/
- temp_ptr = ring->write_p + ring->buf.bpd;
+ temp_ptr = ring->write_p + ring->buf.bytes_per_datum;
/* End of ring, back to the beginning */
- if (temp_ptr == ring->data + ring->buf.length*ring->buf.bpd)
+ if (temp_ptr == ring->data + ring->buf.length*ring->buf.bytes_per_datum)
temp_ptr = ring->data;
/* Update the write pointer
* always valid as long as this is the only function able to write.
*/
else if (ring->write_p == ring->read_p) {
change_test_ptr = ring->read_p;
- temp_ptr = change_test_ptr + ring->buf.bpd;
+ temp_ptr = change_test_ptr + ring->buf.bytes_per_datum;
if (temp_ptr
- == ring->data + ring->buf.length*ring->buf.bpd) {
+ == ring->data + ring->buf.length*ring->buf.bytes_per_datum) {
temp_ptr = ring->data;
}
/* We are moving pointer on one because the ring is full. Any
/* There are definite 'issues' with this and chances of
* simultaneous read */
/* Also need to use loop count to ensure this only happens once */
- ring->half_p += ring->buf.bpd;
- if (ring->half_p == ring->data + ring->buf.length*ring->buf.bpd)
+ ring->half_p += ring->buf.bytes_per_datum;
+ if (ring->half_p == ring->data + ring->buf.length*ring->buf.bytes_per_datum)
ring->half_p = ring->data;
if (ring->half_p == ring->read_p) {
spin_lock(&ring->buf.shared_ev_pointer.lock);
* read something that is not a whole number of bpds.
* Return an error.
*/
- if (count % ring->buf.bpd) {
+ if (count % ring->buf.bytes_per_datum) {
ret = -EINVAL;
printk(KERN_INFO "Ring buffer read request not whole number of"
- "samples: Request bytes %zd, Current bpd %d\n",
- count, ring->buf.bpd);
+ "samples: Request bytes %zd, Current bytes per datum %d\n",
+ count, ring->buf.bytes_per_datum);
goto error_ret;
}
/* Limit size to whole of ring buffer */
- bytes_to_rip = min((size_t)(ring->buf.bpd*ring->buf.length), count);
+ bytes_to_rip = min((size_t)(ring->buf.bytes_per_datum*ring->buf.length), count);
*data = kmalloc(bytes_to_rip, GFP_KERNEL);
if (*data == NULL) {
} else {
/* going through 'end' of ring buffer */
max_copied = ring->data
- + ring->buf.length*ring->buf.bpd - initial_read_p;
+ + ring->buf.length*ring->buf.bytes_per_datum - initial_read_p;
memcpy(*data, initial_read_p, max_copied);
/* possible we are done if we align precisely with end */
if (max_copied == bytes_to_rip)
if (initial_read_p <= current_read_p)
*dead_offset = current_read_p - initial_read_p;
else
- *dead_offset = ring->buf.length*ring->buf.bpd
+ *dead_offset = ring->buf.length*ring->buf.bytes_per_datum
- (initial_read_p - current_read_p);
/* possible issue if the initial write has been lapped or indeed
/* Check there is anything here */
if (last_written_p_copy == NULL)
return -EAGAIN;
- memcpy(data, last_written_p_copy, ring->buf.bpd);
+ memcpy(data, last_written_p_copy, ring->buf.bytes_per_datum);
if (unlikely(ring->last_written_p != last_written_p_copy))
goto again;
goto error_ret;
}
__iio_free_sw_ring_buffer(ring);
- ret = __iio_allocate_sw_ring_buffer(ring, ring->buf.bpd,
+ ret = __iio_allocate_sw_ring_buffer(ring, ring->buf.bytes_per_datum,
ring->buf.length);
error_ret:
spin_unlock(&ring->use_lock);
}
EXPORT_SYMBOL(iio_request_update_sw_rb);
-int iio_get_bpd_sw_rb(struct iio_ring_buffer *r)
+int iio_get_bytes_per_datum_sw_rb(struct iio_ring_buffer *r)
{
struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r);
- return ring->buf.bpd;
+ return ring->buf.bytes_per_datum;
}
-EXPORT_SYMBOL(iio_get_bpd_sw_rb);
+EXPORT_SYMBOL(iio_get_bytes_per_datum_sw_rb);
-int iio_set_bpd_sw_rb(struct iio_ring_buffer *r, size_t bpd)
+int iio_set_bytes_per_datum_sw_rb(struct iio_ring_buffer *r, size_t bpd)
{
- if (r->bpd != bpd) {
- r->bpd = bpd;
+ if (r->bytes_per_datum != bpd) {
+ r->bytes_per_datum = bpd;
if (r->access.mark_param_change)
r->access.mark_param_change(r);
}
return 0;
}
-EXPORT_SYMBOL(iio_set_bpd_sw_rb);
+EXPORT_SYMBOL(iio_set_bytes_per_datum_sw_rb);
int iio_get_length_sw_rb(struct iio_ring_buffer *r)
{
}
static IIO_RING_ENABLE_ATTR;
-static IIO_RING_BPS_ATTR;
+static IIO_RING_BYTES_PER_DATUM_ATTR;
static IIO_RING_LENGTH_ATTR;
/* Standard set of ring buffer attributes */
static struct attribute *iio_ring_attributes[] = {
&dev_attr_length.attr,
- &dev_attr_bps.attr,
- &dev_attr_ring_enable.attr,
+ &dev_attr_bytes_per_datum.attr,
+ &dev_attr_enable.attr,
NULL,
};
size = sizeof(s64);
else /* Data only */
size = indio_dev->scan_count * indio_dev->ring->bpe;
- indio_dev->ring->access.set_bpd(indio_dev->ring, size);
+ indio_dev->ring->access.set_bytes_per_datum(indio_dev->ring, size);
return 0;
}
work_trigger_to_ring);
int len = 0;
size_t datasize = st->indio_dev
- ->ring->access.get_bpd(st->indio_dev->ring);
+ ->ring->access.get_bytes_per_datum(st->indio_dev->ring);
char *data = kmalloc(datasize, GFP_KERNEL);
if (data == NULL) {
/**
- * iio_get_bpd_sw_rb() - get the datum size in bytes
+ * iio_get_bytes_per_datum_sw_rb() - get the datum size in bytes
* @r: pointer to a software ring buffer created by an
* iio_create_sw_rb call
**/
-int iio_get_bpd_sw_rb(struct iio_ring_buffer *r);
+int iio_get_bytes_per_datum_sw_rb(struct iio_ring_buffer *r);
/**
- * iio_set_bpd_sw_rb() - set the datum size in bytes
+ * iio_set_bytes_per_datum_sw_rb() - set the datum size in bytes
* @r: pointer to a software ring buffer created by an
* iio_create_sw_rb call
* @bpd: bytes per datum value
**/
-int iio_set_bpd_sw_rb(struct iio_ring_buffer *r, size_t bpd);
+int iio_set_bytes_per_datum_sw_rb(struct iio_ring_buffer *r, size_t bpd);
/**
* iio_get_length_sw_rb() - get how many datums the rb may contain
ra->mark_param_change = &iio_mark_update_needed_sw_rb;
ra->request_update = &iio_request_update_sw_rb;
- ra->get_bpd = &iio_get_bpd_sw_rb;
- ra->set_bpd = &iio_set_bpd_sw_rb;
+ ra->get_bytes_per_datum = &iio_get_bytes_per_datum_sw_rb;
+ ra->set_bytes_per_datum = &iio_set_bytes_per_datum_sw_rb;
ra->get_length = &iio_get_length_sw_rb;
ra->set_length = &iio_set_length_sw_rb;
projects / openwrt / staging / blogic.git / commitdiff