diff options
Diffstat (limited to 'drivers/staging/iio/adc/ad7280a.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad7280a.c | 112 |
1 files changed, 53 insertions, 59 deletions
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index d9df12665176..19a5f244dcae 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * AD7280A Lithium Ion Battery Monitoring System * * Copyright 2011 Analog Devices Inc. - * - * Licensed under the GPL-2. */ #include <linux/crc8.h> @@ -97,9 +96,10 @@ #define AD7280A_NUM_CH (AD7280A_AUX_ADC_6 - \ AD7280A_CELL_VOLTAGE_1 + 1) -#define AD7280A_CALC_VOLTAGE_CHAN_NUM(d, c) ((d * AD7280A_CELLS_PER_DEV) + c) -#define AD7280A_CALC_TEMP_CHAN_NUM(d, c) ((d * AD7280A_CELLS_PER_DEV) + \ - c - AD7280A_CELLS_PER_DEV) +#define AD7280A_CALC_VOLTAGE_CHAN_NUM(d, c) (((d) * AD7280A_CELLS_PER_DEV) + \ + (c)) +#define AD7280A_CALC_TEMP_CHAN_NUM(d, c) (((d) * AD7280A_CELLS_PER_DEV) + \ + (c) - AD7280A_CELLS_PER_DEV) #define AD7280A_DEVADDR_MASTER 0 #define AD7280A_DEVADDR_ALL 0x1F @@ -783,43 +783,38 @@ static irqreturn_t ad7280_event_handler(int irq, void *private) for (i = 0; i < st->scan_cnt; i++) { if (((channels[i] >> 23) & 0xF) <= AD7280A_CELL_VOLTAGE_6) { if (((channels[i] >> 11) & 0xFFF) >= - st->cell_threshhigh) - iio_push_event(indio_dev, - IIO_EVENT_CODE(IIO_VOLTAGE, - 1, - 0, - IIO_EV_DIR_RISING, - IIO_EV_TYPE_THRESH, - 0, 0, 0), + st->cell_threshhigh) { + u64 tmp = IIO_EVENT_CODE(IIO_VOLTAGE, 1, 0, + IIO_EV_DIR_RISING, + IIO_EV_TYPE_THRESH, + 0, 0, 0); + iio_push_event(indio_dev, tmp, iio_get_time_ns(indio_dev)); - else if (((channels[i] >> 11) & 0xFFF) <= - st->cell_threshlow) - iio_push_event(indio_dev, - IIO_EVENT_CODE(IIO_VOLTAGE, - 1, - 0, - IIO_EV_DIR_FALLING, - IIO_EV_TYPE_THRESH, - 0, 0, 0), + } else if (((channels[i] >> 11) & 0xFFF) <= + st->cell_threshlow) { + u64 tmp = IIO_EVENT_CODE(IIO_VOLTAGE, 1, 0, + IIO_EV_DIR_FALLING, + IIO_EV_TYPE_THRESH, + 0, 0, 0); + iio_push_event(indio_dev, tmp, iio_get_time_ns(indio_dev)); + } } else { - if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh) - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE( - IIO_TEMP, - 0, + if (((channels[i] >> 11) & 0xFFF) >= + st->aux_threshhigh) { + u64 tmp = IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, IIO_EV_TYPE_THRESH, - IIO_EV_DIR_RISING), + IIO_EV_DIR_RISING); + iio_push_event(indio_dev, tmp, iio_get_time_ns(indio_dev)); - else if (((channels[i] >> 11) & 0xFFF) <= - st->aux_threshlow) - iio_push_event(indio_dev, - IIO_UNMOD_EVENT_CODE( - IIO_TEMP, - 0, + } else if (((channels[i] >> 11) & 0xFFF) <= + st->aux_threshlow) { + u64 tmp = IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0, IIO_EV_TYPE_THRESH, - IIO_EV_DIR_FALLING), + IIO_EV_DIR_FALLING); + iio_push_event(indio_dev, tmp, iio_get_time_ns(indio_dev)); + } } } @@ -830,30 +825,30 @@ out: } static IIO_DEVICE_ATTR_NAMED(in_thresh_low_value, - in_voltage-voltage_thresh_low_value, - 0644, - ad7280_read_channel_config, - ad7280_write_channel_config, - AD7280A_CELL_UNDERVOLTAGE); + in_voltage-voltage_thresh_low_value, + 0644, + ad7280_read_channel_config, + ad7280_write_channel_config, + AD7280A_CELL_UNDERVOLTAGE); static IIO_DEVICE_ATTR_NAMED(in_thresh_high_value, - in_voltage-voltage_thresh_high_value, - 0644, - ad7280_read_channel_config, - ad7280_write_channel_config, - AD7280A_CELL_OVERVOLTAGE); + in_voltage-voltage_thresh_high_value, + 0644, + ad7280_read_channel_config, + ad7280_write_channel_config, + AD7280A_CELL_OVERVOLTAGE); static IIO_DEVICE_ATTR(in_temp_thresh_low_value, - 0644, - ad7280_read_channel_config, - ad7280_write_channel_config, - AD7280A_AUX_ADC_UNDERVOLTAGE); + 0644, + ad7280_read_channel_config, + ad7280_write_channel_config, + AD7280A_AUX_ADC_UNDERVOLTAGE); static IIO_DEVICE_ATTR(in_temp_thresh_high_value, - 0644, - ad7280_read_channel_config, - ad7280_write_channel_config, - AD7280A_AUX_ADC_OVERVOLTAGE); + 0644, + ad7280_read_channel_config, + ad7280_write_channel_config, + AD7280A_AUX_ADC_OVERVOLTAGE); static struct attribute *ad7280_event_attributes[] = { &iio_dev_attr_in_thresh_low_value.dev_attr.attr, @@ -921,8 +916,8 @@ static int ad7280_probe(struct spi_device *spi) const struct ad7280_platform_data *pdata = dev_get_platdata(&spi->dev); struct ad7280_state *st; int ret; - const unsigned short tACQ_ns[4] = {465, 1010, 1460, 1890}; - const unsigned short nAVG[4] = {1, 2, 4, 8}; + const unsigned short t_acq_ns[4] = {465, 1010, 1460, 1890}; + const unsigned short n_avg[4] = {1, 2, 4, 8}; struct iio_dev *indio_dev; indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); @@ -970,10 +965,9 @@ static int ad7280_probe(struct spi_device *spi) */ st->readback_delay_us = - ((tACQ_ns[pdata->acquisition_time & 0x3] + 695) * - (AD7280A_NUM_CH * nAVG[pdata->conversion_averaging & 0x3])) - - tACQ_ns[pdata->acquisition_time & 0x3] + - st->slave_num * 250; + ((t_acq_ns[pdata->acquisition_time & 0x3] + 695) * + (AD7280A_NUM_CH * n_avg[pdata->conversion_averaging & 0x3])) - + t_acq_ns[pdata->acquisition_time & 0x3] + st->slave_num * 250; /* Convert to usecs */ st->readback_delay_us = DIV_ROUND_UP(st->readback_delay_us, 1000); |