mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 21:52:04 +00:00
staging:iio:lis3l02dq allow buffer implementation selection
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
parent
b174baf4b7
commit
b949793b2c
@ -66,12 +66,33 @@ config LIS3L02DQ
|
||||
tristate "ST Microelectronics LIS3L02DQ Accelerometer Driver"
|
||||
depends on SPI
|
||||
select IIO_TRIGGER if IIO_RING_BUFFER
|
||||
select IIO_SW_RING if IIO_RING_BUFFER
|
||||
depends on !IIO_RING_BUFFER || IIO_KFIFO_BUF || IIO_SW_RING
|
||||
help
|
||||
Say yes here to build SPI support for the ST microelectronics
|
||||
accelerometer. The driver supplies direct access via sysfs files
|
||||
and an event interface via a character device.
|
||||
|
||||
choice
|
||||
prompt "Buffer type"
|
||||
depends on LIS3L02DQ && IIO_RING_BUFFER
|
||||
|
||||
config LIS3L02DQ_BUF_KFIFO
|
||||
depends on IIO_KFIFO_BUF
|
||||
bool "Simple FIFO"
|
||||
help
|
||||
Kfifo based FIFO. Does not provide any events so it is up
|
||||
to userspace to ensure it reads often enough that data is not
|
||||
lost.
|
||||
|
||||
config LIS3L02DQ_BUF_RING_SW
|
||||
depends on IIO_SW_RING
|
||||
bool "IIO Software Ring"
|
||||
help
|
||||
Original IIO ring buffer implementation. Provides simple
|
||||
buffer events, half full etc.
|
||||
|
||||
endchoice
|
||||
|
||||
config SCA3000
|
||||
depends on IIO_RING_BUFFER
|
||||
depends on SPI
|
||||
|
@ -196,6 +196,16 @@ ssize_t lis3l02dq_read_accel_from_ring(struct device *dev,
|
||||
int lis3l02dq_configure_ring(struct iio_dev *indio_dev);
|
||||
void lis3l02dq_unconfigure_ring(struct iio_dev *indio_dev);
|
||||
|
||||
#ifdef CONFIG_LIS3L02DQ_BUF_RING_SW
|
||||
#define lis3l02dq_free_buf iio_sw_rb_free
|
||||
#define lis3l02dq_alloc_buf iio_sw_rb_allocate
|
||||
#define lis3l02dq_register_buf_funcs iio_ring_sw_register_funcs
|
||||
#endif
|
||||
#ifdef CONFIG_LIS3L02DQ_BUF_KFIFO
|
||||
#define lis3l02dq_free_buf iio_kfifo_free
|
||||
#define lis3l02dq_alloc_buf iio_kfifo_allocate
|
||||
#define lis3l02dq_register_buf_funcs iio_kfifo_register_funcs
|
||||
#endif
|
||||
#else /* CONFIG_IIO_RING_BUFFER */
|
||||
|
||||
static inline void lis3l02dq_remove_trigger(struct iio_dev *indio_dev)
|
||||
|
@ -13,6 +13,7 @@
|
||||
#include "../iio.h"
|
||||
#include "../sysfs.h"
|
||||
#include "../ring_sw.h"
|
||||
#include "../kfifo_buf.h"
|
||||
#include "accel.h"
|
||||
#include "../trigger.h"
|
||||
#include "lis3l02dq.h"
|
||||
@ -484,7 +485,7 @@ void lis3l02dq_remove_trigger(struct iio_dev *indio_dev)
|
||||
void lis3l02dq_unconfigure_ring(struct iio_dev *indio_dev)
|
||||
{
|
||||
kfree(indio_dev->pollfunc);
|
||||
iio_sw_rb_free(indio_dev->ring);
|
||||
lis3l02dq_free_buf(indio_dev->ring);
|
||||
}
|
||||
|
||||
int lis3l02dq_configure_ring(struct iio_dev *indio_dev)
|
||||
@ -495,13 +496,13 @@ int lis3l02dq_configure_ring(struct iio_dev *indio_dev)
|
||||
INIT_WORK(&h->work_trigger_to_ring, lis3l02dq_trigger_bh_to_ring);
|
||||
h->get_ring_element = &lis3l02dq_get_ring_element;
|
||||
|
||||
ring = iio_sw_rb_allocate(indio_dev);
|
||||
ring = lis3l02dq_alloc_buf(indio_dev);
|
||||
if (!ring)
|
||||
return -ENOMEM;
|
||||
|
||||
indio_dev->ring = ring;
|
||||
/* Effectively select the ring buffer implementation */
|
||||
iio_ring_sw_register_funcs(&ring->access);
|
||||
lis3l02dq_register_buf_funcs(&ring->access);
|
||||
ring->bpe = 2;
|
||||
ring->scan_el_attrs = &lis3l02dq_scan_el_group;
|
||||
ring->scan_timestamp = true;
|
||||
@ -522,6 +523,6 @@ int lis3l02dq_configure_ring(struct iio_dev *indio_dev)
|
||||
return 0;
|
||||
|
||||
error_iio_sw_rb_free:
|
||||
iio_sw_rb_free(indio_dev->ring);
|
||||
lis3l02dq_free_buf(indio_dev->ring);
|
||||
return ret;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user