From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org
Cc: lars@metafoo.de, Jonathan Cameron <jic23@cam.ac.uk>
Subject: [PATCH 2/7] staging:iio:buffer add a cache of the timestamp scan index.
Date: Sun, 4 Dec 2011 20:56:57 +0000 [thread overview]
Message-ID: <1323032222-21338-3-git-send-email-jic23@kernel.org> (raw)
In-Reply-To: <1323032222-21338-1-git-send-email-jic23@kernel.org>
From: Jonathan Cameron <jic23@cam.ac.uk>
Basically avoids looking it up lots of times.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
---
drivers/staging/iio/buffer.h | 1 +
drivers/staging/iio/industrialio-buffer.c | 3 +++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/iio/buffer.h b/drivers/staging/iio/buffer.h
index 9de581e..4b8f619 100644
--- a/drivers/staging/iio/buffer.h
+++ b/drivers/staging/iio/buffer.h
@@ -106,6 +106,7 @@ struct iio_buffer {
int scan_count;
long *scan_mask;
bool scan_timestamp;
+ unsigned scan_index_timestamp;
const struct iio_buffer_access_funcs *access;
const struct iio_buffer_setup_ops *setup_ops;
struct list_head scan_el_dev_attr_list;
diff --git a/drivers/staging/iio/industrialio-buffer.c b/drivers/staging/iio/industrialio-buffer.c
index 8c55980..b2cf3e3 100644
--- a/drivers/staging/iio/industrialio-buffer.c
+++ b/drivers/staging/iio/industrialio-buffer.c
@@ -313,6 +313,9 @@ int iio_buffer_register(struct iio_dev *indio_dev,
if (ret < 0)
goto error_cleanup_dynamic;
attrcount += ret;
+ if (channels[i].type == IIO_TIMESTAMP)
+ buffer->scan_index_timestamp =
+ channels[i].scan_index;
}
if (indio_dev->masklength && buffer->scan_mask == NULL) {
buffer->scan_mask = kcalloc(BITS_TO_LONGS(indio_dev->masklength),
--
1.7.7.4
next prev parent reply other threads:[~2011-12-04 20:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-04 20:56 [PATCH V2 0/7] Add scan demux unit and use it in max1363 Jonathan Cameron
2011-12-04 20:56 ` Jonathan Cameron [this message]
2011-12-04 20:56 ` [PATCH 3/7] staging:iio: add hook to allow core to perform scan related config Jonathan Cameron
2011-12-04 20:56 ` [PATCH 4/7] staging:iio: make iio_sw_buffer_preenable much more general Jonathan Cameron
2011-12-05 10:01 ` Lars-Peter Clausen
2011-12-05 17:02 ` Jonathan Cameron
2011-12-04 20:57 ` [PATCH 7/7] staging:iio:adc:max1363 correctly set channels as big endian Jonathan Cameron
[not found] ` <1323032222-21338-6-git-send-email-jic23@kernel.org>
2011-12-05 9:57 ` [PATCH 5/7] staging:iio: add demux optionally to path from device to buffer Lars-Peter Clausen
-- strict thread matches above, loose matches on Subject: below --
2011-12-05 21:37 [PATCH V3 0/7] Add scan demux unit and use it in max1363 Jonathan Cameron
2011-12-05 21:37 ` [PATCH 2/7] staging:iio:buffer add a cache of the timestamp scan index Jonathan Cameron
2011-11-27 13:10 [PATCH 0/7] Add scan demux unit and use it in max1363 Jonathan Cameron
2011-11-27 13:10 ` [PATCH 2/7] staging:iio:buffer add a cache of the timestamp scan index Jonathan Cameron
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