Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH 3.16.y-ckt 048/165] iio:adc:mcp3422 Fix incorrect scales table | Date | Wed, 25 Mar 2015 14:00:21 +0000 |
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3.16.7-ckt9 -stable review patch. If anyone has any objections, please let me know.
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From: Angelo Compagnucci <angelo.compagnucci@gmail.com>
commit 9e128ced3851d2802b6db870f6b2e93f449ce013 upstream.
This patch fixes uncorrect order of mcp3422_scales table, the values was erroneously transposed. It removes also an unused array and a wrong comment.
Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/iio/adc/mcp3422.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c index 51672256072b..b96c636470ef 100644 --- a/drivers/iio/adc/mcp3422.c +++ b/drivers/iio/adc/mcp3422.c @@ -58,20 +58,11 @@ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ } -/* LSB is in nV to eliminate floating point */ -static const u32 rates_to_lsb[] = {1000000, 250000, 62500, 15625}; - -/* - * scales calculated as: - * rates_to_lsb[sample_rate] / (1 << pga); - * pga is 1 for 0, 2 - */ - static const int mcp3422_scales[4][4] = { - { 1000000, 250000, 62500, 15625 }, - { 500000 , 125000, 31250, 7812 }, - { 250000 , 62500 , 15625, 3906 }, - { 125000 , 31250 , 7812 , 1953 } }; + { 1000000, 500000, 250000, 125000 }, + { 250000 , 125000, 62500 , 31250 }, + { 62500 , 31250 , 15625 , 7812 }, + { 15625 , 7812 , 3906 , 1953 } }; /* Constant msleep times for data acquisitions */ static const int mcp3422_read_times[4] = {
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