summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--drivers/iio/buffer_cb.c2
-rw-r--r--drivers/iio/industrialio-buffer.c18
-rw-r--r--drivers/iio/kfifo_buf.c2
-rw-r--r--drivers/staging/iio/accel/sca3000_ring.c2
-rw-r--r--include/linux/iio/buffer.h3
5 files changed, 24 insertions, 3 deletions
diff --git a/drivers/iio/buffer_cb.c b/drivers/iio/buffer_cb.c
index eb46e728aa2e..1648e6e5a848 100644
--- a/drivers/iio/buffer_cb.c
+++ b/drivers/iio/buffer_cb.c
@@ -33,6 +33,8 @@ static void iio_buffer_cb_release(struct iio_buffer *buffer)
static const struct iio_buffer_access_funcs iio_cb_access = {
.store_to = &iio_buffer_cb_store_to,
.release = &iio_buffer_cb_release,
+
+ .modes = INDIO_BUFFER_SOFTWARE | INDIO_BUFFER_TRIGGERED,
};
struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 209c7ad793c5..0a14bd825fe0 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -604,6 +604,7 @@ static int iio_verify_update(struct iio_dev *indio_dev,
const unsigned long *scan_mask;
struct iio_buffer *buffer;
bool scan_timestamp;
+ unsigned int modes;
memset(config, 0, sizeof(*config));
@@ -615,12 +616,23 @@ static int iio_verify_update(struct iio_dev *indio_dev,
list_is_singular(&indio_dev->buffer_list))
return 0;
+ modes = indio_dev->modes;
+
+ list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+ if (buffer == remove_buffer)
+ continue;
+ modes &= buffer->access->modes;
+ }
+
+ if (insert_buffer)
+ modes &= insert_buffer->access->modes;
+
/* Definitely possible for devices to support both of these. */
- if ((indio_dev->modes & INDIO_BUFFER_TRIGGERED) && indio_dev->trig) {
+ if ((modes & INDIO_BUFFER_TRIGGERED) && indio_dev->trig) {
config->mode = INDIO_BUFFER_TRIGGERED;
- } else if (indio_dev->modes & INDIO_BUFFER_HARDWARE) {
+ } else if (modes & INDIO_BUFFER_HARDWARE) {
config->mode = INDIO_BUFFER_HARDWARE;
- } else if (indio_dev->modes & INDIO_BUFFER_SOFTWARE) {
+ } else if (modes & INDIO_BUFFER_SOFTWARE) {
config->mode = INDIO_BUFFER_SOFTWARE;
} else {
/* Can only occur on first buffer */
diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c
index 847ca561afe0..db15684a4731 100644
--- a/drivers/iio/kfifo_buf.c
+++ b/drivers/iio/kfifo_buf.c
@@ -135,6 +135,8 @@ static const struct iio_buffer_access_funcs kfifo_access_funcs = {
.set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
.set_length = &iio_set_length_kfifo,
.release = &iio_kfifo_buffer_release,
+
+ .modes = INDIO_BUFFER_SOFTWARE | INDIO_BUFFER_TRIGGERED,
};
struct iio_buffer *iio_kfifo_allocate(void)
diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c
index 8589eade1057..23685e74917e 100644
--- a/drivers/staging/iio/accel/sca3000_ring.c
+++ b/drivers/staging/iio/accel/sca3000_ring.c
@@ -258,6 +258,8 @@ static const struct iio_buffer_access_funcs sca3000_ring_access_funcs = {
.read_first_n = &sca3000_read_first_n_hw_rb,
.data_available = sca3000_ring_buf_data_available,
.release = sca3000_ring_release,
+
+ .modes = INDIO_BUFFER_HARDWARE,
};
int sca3000_configure_ring(struct iio_dev *indio_dev)
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index eb8622b78ec9..1600c55828e0 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -29,6 +29,7 @@ struct iio_buffer;
* @set_length: set number of datums in buffer
* @release: called when the last reference to the buffer is dropped,
* should free all resources allocated by the buffer.
+ * @modes: Supported operating modes by this buffer type
*
* The purpose of this structure is to make the buffer element
* modular as event for a given driver, different usecases may require
@@ -51,6 +52,8 @@ struct iio_buffer_access_funcs {
int (*set_length)(struct iio_buffer *buffer, int length);
void (*release)(struct iio_buffer *buffer);
+
+ unsigned int modes;
};
/**