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Commit 0f6fc7d5 authored by Zubair Lutfullah's avatar Zubair Lutfullah Committed by Jonathan Cameron
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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: default avatarZubair Lutfullah <zubair.lutfullah@gmail.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent baee5399

drivers/iio/adc/ti_am335x_adc.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -122,7 +122,7 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels) 
		chan->datasheet_name = chan_name_ain[chan->channel];

		chan->datasheet_name = chan_name_ain[chan->channel];

		chan->scan_type.sign = 'u';

		chan->scan_type.sign = 'u';

		chan->scan_type.realbits = 12;

		chan->scan_type.realbits = 12;

		chan->scan_type.storagebits = 32;

		chan->scan_type.storagebits = 16;

	}

	}





	indio_dev->channels = chan_array;

	indio_dev->channels = chan_array;
@@ -186,7 +186,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, 
		if (stepid == map_val) {

		if (stepid == map_val) {

			read = read & FIFOREAD_DATA_MASK;

			read = read & FIFOREAD_DATA_MASK;

			found = true;

			found = true;

			*val = read;

			*val = (u16) read;

		}

		}

	}

	}