Title: [9092] trunk/drivers/staging/iio/meter/ade7758_core.c: ade7758: fix sampling frequency error
- Revision
- 9092
- Author
- bhsong
- Date
- 2010-08-19 03:57:24 -0400 (Thu, 19 Aug 2010)
Log Message
ade7758: fix sampling frequency error
reported-by: Allister Mannion <[email protected]>
refer to:
http://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?_forum_action=ForumMessageBrowse&thread_id=42091&action="">
Modified Paths
Diff
Modified: trunk/drivers/staging/iio/meter/ade7758_core.c (9091 => 9092)
--- trunk/drivers/staging/iio/meter/ade7758_core.c 2010-08-18 09:17:25 UTC (rev 9091)
+++ trunk/drivers/staging/iio/meter/ade7758_core.c 2010-08-19 07:57:24 UTC (rev 9092)
@@ -497,8 +497,8 @@
if (ret)
return ret;
- t = (t >> 3) & 0x3;
- sps = 26000 / (1 + t);
+ t = (t >> 5) & 0x3;
+ sps = 26040 / (1 << t);
len = sprintf(buf, "%d SPS\n", sps);
return len;
@@ -521,9 +521,9 @@
mutex_lock(&indio_dev->mlock);
- t = (26000 / val);
+ t = (26040 / val);
if (t > 0)
- t--;
+ t >>= 1;
if (t > 1)
st->us->max_speed_hz = ADE7758_SPI_SLOW;
@@ -536,8 +536,8 @@
if (ret)
goto out;
- reg &= ~(3 << 3);
- reg |= t << 3;
+ reg &= ~(5 << 3);
+ reg |= t << 5;
ret = ade7758_spi_write_reg_8(dev,
ADE7758_WAVMODE,
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