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iio: Remove get_bytes_per_datum() from iio_buffer_access_funcs 

There haven't been any users of the get_bytes_per_datum() callback for a
while. The core assumes that the number of bytes per datum can be calculated
based on the enabled channels and the storage size of the channel and
iio_compute_scan_bytes() is used to compute this number. So remove the
callback.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2014-11-26 18:55:13 +01:00 committed by Jonathan Cameron
parent 3e1b6c95b9
commit 616dde2a1e
4 changed files with 2 additions and 17 deletions
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6
drivers/iio/kfifo_buf.c
View File

@ -66,11 +66,6 @@ static struct attribute_group iio_kfifo_attribute_group = {
.name = "buffer",
};
static int iio_get_bytes_per_datum_kfifo(struct iio_buffer *r)
{
return r->bytes_per_datum;
}
static int iio_mark_update_needed_kfifo(struct iio_buffer *r)
{
struct iio_kfifo *kf = iio_to_kfifo(r);
@ -159,7 +154,6 @@ static const struct iio_buffer_access_funcs kfifo_access_funcs = {
.read_first_n = &iio_read_first_n_kfifo,
.data_available = iio_kfifo_buf_data_available,
.request_update = &iio_request_update_kfifo,
.get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo,
.set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
.get_length = &iio_get_length_kfifo,
.set_length = &iio_set_length_kfifo,

4
drivers/staging/iio/Documentation/ring.txt
View File

@ -39,8 +39,8 @@ request_update
If parameters have changed that require reinitialization or configuration of
the buffer this will trigger it.
get_bytes_per_datum, set_bytes_per_datum
Get/set the number of bytes for a complete scan. (All samples + timestamp)
set_bytes_per_datum
Set the number of bytes for a complete scan. (All samples + timestamp)
get_length / set_length
Get/set the number of complete scans that may be held by the buffer.

7
drivers/staging/iio/accel/sca3000_ring.c
View File

@ -135,12 +135,6 @@ static int sca3000_ring_get_length(struct iio_buffer *r)
return 64;
}
/* only valid if resolution is kept at 11bits */
static int sca3000_ring_get_bytes_per_datum(struct iio_buffer *r)
{
return 6;
}
static bool sca3000_ring_buf_data_available(struct iio_buffer *r)
{
return r->stufftoread;
@ -278,7 +272,6 @@ static void sca3000_ring_release(struct iio_buffer *r)
static const struct iio_buffer_access_funcs sca3000_ring_access_funcs = {
.read_first_n = &sca3000_read_first_n_hw_rb,
.get_length = &sca3000_ring_get_length,
.get_bytes_per_datum = &sca3000_ring_get_bytes_per_datum,
.data_available = sca3000_ring_buf_data_available,
.release = sca3000_ring_release,
};

2
include/linux/iio/buffer.h
View File

@ -25,7 +25,6 @@ struct iio_buffer;
* available.
* @request_update: if a parameter change has been marked, update underlying
* storage.
* @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 buffer
* @set_length: set number of datums in buffer
@ -49,7 +48,6 @@ struct iio_buffer_access_funcs {
int (*request_update)(struct iio_buffer *buffer);
int (*get_bytes_per_datum)(struct iio_buffer *buffer);
int (*set_bytes_per_datum)(struct iio_buffer *buffer, size_t bpd);
int (*get_length)(struct iio_buffer *buffer);
int (*set_length)(struct iio_buffer *buffer, int length);