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authorZubair Lutfullah <zubair.lutfullah@gmail.com>2013-09-19 02:24:00 -0400
committerJonathan Cameron <jic23@kernel.org>2013-09-21 06:47:53 -0400
commit0f6fc7d56fe56aad5410fdaa7cebbb918580a33c (patch)
treee5c360c8d25c50294690c9b009678287c65b406e /drivers/iio/adc
parentbaee539915e9e89bdebb369229bc0684c86feac2 (diff)
iio: ti_am335x_adc: optimize memory usage
12 bit ADC data is stored in 32 bits of storage. Change from u32 to u16 to reduce wasted memory. Signed-off-by: Zubair Lutfullah <zubair.lutfullah@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/adc')
-rw-r--r--drivers/iio/adc/ti_am335x_adc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index a952538a1a8b..ebe93eba3ec8 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -122,7 +122,7 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
122 chan->datasheet_name = chan_name_ain[chan->channel]; 122 chan->datasheet_name = chan_name_ain[chan->channel];
123 chan->scan_type.sign = 'u'; 123 chan->scan_type.sign = 'u';
124 chan->scan_type.realbits = 12; 124 chan->scan_type.realbits = 12;
125 chan->scan_type.storagebits = 32; 125 chan->scan_type.storagebits = 16;
126 } 126 }
127 127
128 indio_dev->channels = chan_array; 128 indio_dev->channels = chan_array;
@@ -186,7 +186,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
186 if (stepid == map_val) { 186 if (stepid == map_val) {
187 read = read & FIFOREAD_DATA_MASK; 187 read = read & FIFOREAD_DATA_MASK;
188 found = true; 188 found = true;
189 *val = read; 189 *val = (u16) read;
190 } 190 }
191 } 191 }
192 192