Commit 38125b2c authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Jonathan Cameron

iio: mxs-lradc: convert is_divided to a bitmap

mxs_lradc.is_divided was an unsigned long array. Convert it to a bitmap to save
some memory.
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent aba70f2a
...@@ -211,7 +211,7 @@ struct mxs_lradc { ...@@ -211,7 +211,7 @@ struct mxs_lradc {
const uint32_t *vref_mv; const uint32_t *vref_mv;
struct mxs_lradc_scale scale_avail[LRADC_MAX_TOTAL_CHANS][2]; struct mxs_lradc_scale scale_avail[LRADC_MAX_TOTAL_CHANS][2];
unsigned int is_divided[LRADC_MAX_TOTAL_CHANS]; unsigned long is_divided;
/* /*
* Touchscreen LRADC channels receives a private slot in the CTRL4 * Touchscreen LRADC channels receives a private slot in the CTRL4
...@@ -920,7 +920,7 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev, ...@@ -920,7 +920,7 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
*val = lradc->vref_mv[chan->channel]; *val = lradc->vref_mv[chan->channel];
*val2 = chan->scan_type.realbits - *val2 = chan->scan_type.realbits -
lradc->is_divided[chan->channel]; test_bit(chan->channel, &lradc->is_divided);
return IIO_VAL_FRACTIONAL_LOG2; return IIO_VAL_FRACTIONAL_LOG2;
case IIO_CHAN_INFO_OFFSET: case IIO_CHAN_INFO_OFFSET:
...@@ -965,14 +965,14 @@ static int mxs_lradc_write_raw(struct iio_dev *iio_dev, ...@@ -965,14 +965,14 @@ static int mxs_lradc_write_raw(struct iio_dev *iio_dev,
/* divider by two disabled */ /* divider by two disabled */
writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET, writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET,
lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_CLR); lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_CLR);
lradc->is_divided[chan->channel] = 0; clear_bit(chan->channel, &lradc->is_divided);
ret = 0; ret = 0;
} else if (val == scale_avail[MXS_LRADC_DIV_ENABLED].integer && } else if (val == scale_avail[MXS_LRADC_DIV_ENABLED].integer &&
val2 == scale_avail[MXS_LRADC_DIV_ENABLED].nano) { val2 == scale_avail[MXS_LRADC_DIV_ENABLED].nano) {
/* divider by two enabled */ /* divider by two enabled */
writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET, writel(1 << LRADC_CTRL2_DIVIDE_BY_TWO_OFFSET,
lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_SET); lradc->base + LRADC_CTRL2 + STMP_OFFSET_REG_SET);
lradc->is_divided[chan->channel] = 1; set_bit(chan->channel, &lradc->is_divided);
ret = 0; ret = 0;
} }
......
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