aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/iio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/iio')
-rw-r--r--drivers/staging/iio/adc/Kconfig34
-rw-r--r--drivers/staging/iio/adc/Makefile4
-rw-r--r--drivers/staging/iio/adc/ad7280a.c243
-rw-r--r--drivers/staging/iio/adc/ad7606.c563
-rw-r--r--drivers/staging/iio/adc/ad7606.h106
-rw-r--r--drivers/staging/iio/adc/ad7606_par.c113
-rw-r--r--drivers/staging/iio/adc/ad7606_spi.c79
-rw-r--r--drivers/staging/iio/adc/ad7816.c7
-rw-r--r--drivers/staging/iio/addac/adt7316-i2c.c6
-rw-r--r--drivers/staging/iio/addac/adt7316-spi.c4
-rw-r--r--drivers/staging/iio/addac/adt7316.c143
-rw-r--r--drivers/staging/iio/cdc/Kconfig10
-rw-r--r--drivers/staging/iio/cdc/Makefile1
-rw-r--r--drivers/staging/iio/cdc/ad7152.c552
-rw-r--r--drivers/staging/iio/frequency/ad9834.c54
-rw-r--r--drivers/staging/iio/frequency/ad9834.h28
-rw-r--r--drivers/staging/iio/impedance-analyzer/ad5933.c57
17 files changed, 306 insertions, 1698 deletions
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index fc23059f1673..7a93d3a5c113 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -3,40 +3,6 @@
#
menu "Analog to digital converters"
-config AD7606
- tristate "Analog Devices AD7606 ADC driver"
- depends on GPIOLIB || COMPILE_TEST
- depends on HAS_IOMEM
- select IIO_BUFFER
- select IIO_TRIGGERED_BUFFER
- help
- Say yes here to build support for Analog Devices:
- ad7605-4, ad7606, ad7606-6, ad7606-4 analog to digital converters (ADC).
-
- To compile this driver as a module, choose M here: the
- module will be called ad7606.
-
-config AD7606_IFACE_PARALLEL
- tristate "parallel interface support"
- depends on AD7606
- help
- Say yes here to include parallel interface support on the AD7606
- ADC driver.
-
- To compile this driver as a module, choose M here: the
- module will be called ad7606_parallel.
-
-config AD7606_IFACE_SPI
- tristate "spi interface support"
- depends on AD7606
- depends on SPI
- help
- Say yes here to include parallel interface support on the AD7606
- ADC driver.
-
- To compile this driver as a module, choose M here: the
- module will be called ad7606_spi.
-
config AD7780
tristate "Analog Devices AD7780 and similar ADCs driver"
depends on SPI
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index ebe83c1ad362..7a421088ff82 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -3,10 +3,6 @@
# Makefile for industrial I/O ADC drivers
#
-obj-$(CONFIG_AD7606_IFACE_PARALLEL) += ad7606_par.o
-obj-$(CONFIG_AD7606_IFACE_SPI) += ad7606_spi.o
-obj-$(CONFIG_AD7606) += ad7606.o
-
obj-$(CONFIG_AD7780) += ad7780.o
obj-$(CONFIG_AD7816) += ad7816.o
obj-$(CONFIG_AD7192) += ad7192.o
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index 14f6a3ced060..d9df12665176 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -97,6 +97,10 @@
#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_DEVADDR_MASTER 0
#define AD7280A_DEVADDR_ALL 0x1F
/* 5-bit device address is sent LSB first */
@@ -496,72 +500,171 @@ static const struct attribute_group ad7280_attrs_group = {
.attrs = ad7280_attributes,
};
+static void ad7280_voltage_channel_init(struct iio_chan_spec *chan, int i)
+{
+ chan->type = IIO_VOLTAGE;
+ chan->differential = 1;
+ chan->channel = i;
+ chan->channel2 = chan->channel + 1;
+}
+
+static void ad7280_temp_channel_init(struct iio_chan_spec *chan, int i)
+{
+ chan->type = IIO_TEMP;
+ chan->channel = i;
+}
+
+static void ad7280_common_fields_init(struct iio_chan_spec *chan, int addr,
+ int cnt)
+{
+ chan->indexed = 1;
+ chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+ chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
+ chan->address = addr;
+ chan->scan_index = cnt;
+ chan->scan_type.sign = 'u';
+ chan->scan_type.realbits = 12;
+ chan->scan_type.storagebits = 32;
+}
+
+static void ad7280_total_voltage_channel_init(struct iio_chan_spec *chan,
+ int cnt, int dev)
+{
+ chan->type = IIO_VOLTAGE;
+ chan->differential = 1;
+ chan->channel = 0;
+ chan->channel2 = dev * AD7280A_CELLS_PER_DEV;
+ chan->address = AD7280A_ALL_CELLS;
+ chan->indexed = 1;
+ chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+ chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
+ chan->scan_index = cnt;
+ chan->scan_type.sign = 'u';
+ chan->scan_type.realbits = 32;
+ chan->scan_type.storagebits = 32;
+}
+
+static void ad7280_timestamp_channel_init(struct iio_chan_spec *chan, int cnt)
+{
+ chan->type = IIO_TIMESTAMP;
+ chan->channel = -1;
+ chan->scan_index = cnt;
+ chan->scan_type.sign = 's';
+ chan->scan_type.realbits = 64;
+ chan->scan_type.storagebits = 64;
+}
+
+static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt)
+{
+ int addr, ch, i;
+ struct iio_chan_spec *chan;
+
+ for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_AUX_ADC_6; ch++) {
+ chan = &st->channels[*cnt];
+
+ if (ch < AD7280A_AUX_ADC_1) {
+ i = AD7280A_CALC_VOLTAGE_CHAN_NUM(dev, ch);
+ ad7280_voltage_channel_init(chan, i);
+ } else {
+ i = AD7280A_CALC_TEMP_CHAN_NUM(dev, ch);
+ ad7280_temp_channel_init(chan, i);
+ }
+
+ addr = ad7280a_devaddr(dev) << 8 | ch;
+ ad7280_common_fields_init(chan, addr, *cnt);
+
+ (*cnt)++;
+ }
+}
+
static int ad7280_channel_init(struct ad7280_state *st)
{
- int dev, ch, cnt;
+ int dev, cnt = 0;
st->channels = devm_kcalloc(&st->spi->dev, (st->slave_num + 1) * 12 + 2,
sizeof(*st->channels), GFP_KERNEL);
if (!st->channels)
return -ENOMEM;
- for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
- for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_AUX_ADC_6;
- ch++, cnt++) {
- if (ch < AD7280A_AUX_ADC_1) {
- st->channels[cnt].type = IIO_VOLTAGE;
- st->channels[cnt].differential = 1;
- st->channels[cnt].channel = (dev * 6) + ch;
- st->channels[cnt].channel2 =
- st->channels[cnt].channel + 1;
- } else {
- st->channels[cnt].type = IIO_TEMP;
- st->channels[cnt].channel = (dev * 6) + ch - 6;
- }
- st->channels[cnt].indexed = 1;
- st->channels[cnt].info_mask_separate =
- BIT(IIO_CHAN_INFO_RAW);
- st->channels[cnt].info_mask_shared_by_type =
- BIT(IIO_CHAN_INFO_SCALE);
- st->channels[cnt].address =
- ad7280a_devaddr(dev) << 8 | ch;
- st->channels[cnt].scan_index = cnt;
- st->channels[cnt].scan_type.sign = 'u';
- st->channels[cnt].scan_type.realbits = 12;
- st->channels[cnt].scan_type.storagebits = 32;
- st->channels[cnt].scan_type.shift = 0;
- }
+ for (dev = 0; dev <= st->slave_num; dev++)
+ ad7280_init_dev_channels(st, dev, &cnt);
- st->channels[cnt].type = IIO_VOLTAGE;
- st->channels[cnt].differential = 1;
- st->channels[cnt].channel = 0;
- st->channels[cnt].channel2 = dev * 6;
- st->channels[cnt].address = AD7280A_ALL_CELLS;
- st->channels[cnt].indexed = 1;
- st->channels[cnt].info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
- st->channels[cnt].info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
- st->channels[cnt].scan_index = cnt;
- st->channels[cnt].scan_type.sign = 'u';
- st->channels[cnt].scan_type.realbits = 32;
- st->channels[cnt].scan_type.storagebits = 32;
- st->channels[cnt].scan_type.shift = 0;
+ ad7280_total_voltage_channel_init(&st->channels[cnt], cnt, dev);
cnt++;
- st->channels[cnt].type = IIO_TIMESTAMP;
- st->channels[cnt].channel = -1;
- st->channels[cnt].scan_index = cnt;
- st->channels[cnt].scan_type.sign = 's';
- st->channels[cnt].scan_type.realbits = 64;
- st->channels[cnt].scan_type.storagebits = 64;
- st->channels[cnt].scan_type.shift = 0;
+ ad7280_timestamp_channel_init(&st->channels[cnt], cnt);
return cnt + 1;
}
-static int ad7280_attr_init(struct ad7280_state *st)
+static int ad7280_balance_switch_attr_init(struct iio_dev_attr *attr,
+ struct device *dev, int addr, int i)
{
- int dev, ch, cnt;
- unsigned int index;
+ attr->address = addr;
+ attr->dev_attr.attr.mode = 0644;
+ attr->dev_attr.show = ad7280_show_balance_sw;
+ attr->dev_attr.store = ad7280_store_balance_sw;
+ attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "in%d-in%d_balance_switch_en",
+ i, i + 1);
+ if (!attr->dev_attr.attr.name)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int ad7280_balance_timer_attr_init(struct iio_dev_attr *attr,
+ struct device *dev, int addr, int i)
+{
+ attr->address = addr;
+ attr->dev_attr.attr.mode = 0644;
+ attr->dev_attr.show = ad7280_show_balance_timer;
+ attr->dev_attr.store = ad7280_store_balance_timer;
+ attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "in%d-in%d_balance_timer",
+ i, i + 1);
+ if (!attr->dev_attr.attr.name)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int ad7280_init_dev_attrs(struct ad7280_state *st, int dev, int *cnt)
+{
+ int addr, ch, i, ret;
struct iio_dev_attr *iio_attr;
+ struct device *sdev = &st->spi->dev;
+
+ for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_CELL_VOLTAGE_6; ch++) {
+ iio_attr = &st->iio_attr[*cnt];
+ addr = ad7280a_devaddr(dev) << 8 | ch;
+ i = dev * AD7280A_CELLS_PER_DEV + ch;
+
+ ret = ad7280_balance_switch_attr_init(iio_attr, sdev, addr, i);
+ if (ret < 0)
+ return ret;
+
+ ad7280_attributes[*cnt] = &iio_attr->dev_attr.attr;
+
+ (*cnt)++;
+ iio_attr = &st->iio_attr[*cnt];
+ addr = ad7280a_devaddr(dev) << 8 | (AD7280A_CB1_TIMER + ch);
+
+ ret = ad7280_balance_timer_attr_init(iio_attr, sdev, addr, i);
+ if (ret < 0)
+ return ret;
+
+ ad7280_attributes[*cnt] = &iio_attr->dev_attr.attr;
+ (*cnt)++;
+ }
+
+ ad7280_attributes[*cnt] = NULL;
+
+ return 0;
+}
+
+static int ad7280_attr_init(struct ad7280_state *st)
+{
+ int dev, cnt = 0, ret;
st->iio_attr = devm_kcalloc(&st->spi->dev, 2, sizeof(*st->iio_attr) *
(st->slave_num + 1) * AD7280A_CELLS_PER_DEV,
@@ -569,41 +672,11 @@ static int ad7280_attr_init(struct ad7280_state *st)
if (!st->iio_attr)
return -ENOMEM;
- for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
- for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_CELL_VOLTAGE_6;
- ch++, cnt++) {
- iio_attr = &st->iio_attr[cnt];
- index = dev * AD7280A_CELLS_PER_DEV + ch;
- iio_attr->address = ad7280a_devaddr(dev) << 8 | ch;
- iio_attr->dev_attr.attr.mode = 0644;
- iio_attr->dev_attr.show = ad7280_show_balance_sw;
- iio_attr->dev_attr.store = ad7280_store_balance_sw;
- iio_attr->dev_attr.attr.name =
- devm_kasprintf(&st->spi->dev, GFP_KERNEL,
- "in%d-in%d_balance_switch_en",
- index, index + 1);
- if (!iio_attr->dev_attr.attr.name)
- return -ENOMEM;
-
- ad7280_attributes[cnt] = &iio_attr->dev_attr.attr;
- cnt++;
- iio_attr = &st->iio_attr[cnt];
- iio_attr->address = ad7280a_devaddr(dev) << 8 |
- (AD7280A_CB1_TIMER + ch);
- iio_attr->dev_attr.attr.mode = 0644;
- iio_attr->dev_attr.show = ad7280_show_balance_timer;
- iio_attr->dev_attr.store = ad7280_store_balance_timer;
- iio_attr->dev_attr.attr.name =
- devm_kasprintf(&st->spi->dev, GFP_KERNEL,
- "in%d-in%d_balance_timer",
- index, index + 1);
- if (!iio_attr->dev_attr.attr.name)
- return -ENOMEM;
-
- ad7280_attributes[cnt] = &iio_attr->dev_attr.attr;
- }
-
- ad7280_attributes[cnt] = NULL;
+ for (dev = 0; dev <= st->slave_num; dev++) {
+ ret = ad7280_init_dev_attrs(st, dev, &cnt);
+ if (ret < 0)
+ return ret;
+ }
return 0;
}
diff --git a/drivers/staging/iio/adc/ad7606.c b/drivers/staging/iio/adc/ad7606.c
deleted file mode 100644
index 7308fa8fbb4c..000000000000
--- a/drivers/staging/iio/adc/ad7606.c
+++ /dev/null
@@ -1,563 +0,0 @@
-/*
- * AD7606 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/gpio/consumer.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#include "ad7606.h"
-
-/*
- * Scales are computed as 5000/32768 and 10000/32768 respectively,
- * so that when applied to the raw values they provide mV values
- */
-static const unsigned int scale_avail[2][2] = {
- {0, 152588}, {0, 305176}
-};
-
-static int ad7606_reset(struct ad7606_state *st)
-{
- if (st->gpio_reset) {
- gpiod_set_value(st->gpio_reset, 1);
- ndelay(100); /* t_reset >= 100ns */
- gpiod_set_value(st->gpio_reset, 0);
- return 0;
- }
-
- return -ENODEV;
-}
-
-static int ad7606_read_samples(struct ad7606_state *st)
-{
- unsigned int num = st->chip_info->num_channels;
- u16 *data = st->data;
- int ret;
-
- /*
- * The frstdata signal is set to high while and after reading the sample
- * of the first channel and low for all other channels. This can be used
- * to check that the incoming data is correctly aligned. During normal
- * operation the data should never become unaligned, but some glitch or
- * electrostatic discharge might cause an extra read or clock cycle.
- * Monitoring the frstdata signal allows to recover from such failure
- * situations.
- */
-
- if (st->gpio_frstdata) {
- ret = st->bops->read_block(st->dev, 1, data);
- if (ret)
- return ret;
-
- if (!gpiod_get_value(st->gpio_frstdata)) {
- ad7606_reset(st);
- return -EIO;
- }
-
- data++;
- num--;
- }
-
- return st->bops->read_block(st->dev, num, data);
-}
-
-static irqreturn_t ad7606_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct ad7606_state *st = iio_priv(pf->indio_dev);
-
- gpiod_set_value(st->gpio_convst, 1);
-
- return IRQ_HANDLED;
-}
-
-/**
- * ad7606_poll_bh_to_ring() bh of trigger launched polling to ring buffer
- * @work_s: the work struct through which this was scheduled
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- * I think the one copy of this at a time was to avoid problems if the
- * trigger was set far too high and the reads then locked up the computer.
- **/
-static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
-{
- struct ad7606_state *st = container_of(work_s, struct ad7606_state,
- poll_work);
- struct iio_dev *indio_dev = iio_priv_to_dev(st);
- int ret;
-
- ret = ad7606_read_samples(st);
- if (ret == 0)
- iio_push_to_buffers_with_timestamp(indio_dev, st->data,
- iio_get_time_ns(indio_dev));
-
- gpiod_set_value(st->gpio_convst, 0);
- iio_trigger_notify_done(indio_dev->trig);
-}
-
-static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch)
-{
- struct ad7606_state *st = iio_priv(indio_dev);
- int ret;
-
- st->done = false;
- gpiod_set_value(st->gpio_convst, 1);
-
- ret = wait_event_interruptible(st->wq_data_avail, st->done);
- if (ret)
- goto error_ret;
-
- ret = ad7606_read_samples(st);
- if (ret == 0)
- ret = st->data[ch];
-
-error_ret:
- gpiod_set_value(st->gpio_convst, 0);
-
- return ret;
-}
-
-static int ad7606_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val,
- int *val2,
- long m)
-{
- int ret;
- struct ad7606_state *st = iio_priv(indio_dev);
-
- switch (m) {
- case IIO_CHAN_INFO_RAW:
- ret = iio_device_claim_direct_mode(indio_dev);
- if (ret)
- return ret;
-
- ret = ad7606_scan_direct(indio_dev, chan->address);
- iio_device_release_direct_mode(indio_dev);
-
- if (ret < 0)
- return ret;
- *val = (short)ret;
- return IIO_VAL_INT;
- case IIO_CHAN_INFO_SCALE:
- *val = scale_avail[st->range][0];
- *val2 = scale_avail[st->range][1];
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
- *val = st->oversampling;
- return IIO_VAL_INT;
- }
- return -EINVAL;
-}
-
-static ssize_t in_voltage_scale_available_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int i, len = 0;
-
- for (i = 0; i < ARRAY_SIZE(scale_avail); i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06u ",
- scale_avail[i][0], scale_avail[i][1]);
-
- buf[len - 1] = '\n';
-
- return len;
-}
-
-static IIO_DEVICE_ATTR_RO(in_voltage_scale_available, 0);
-
-static int ad7606_oversampling_get_index(unsigned int val)
-{
- unsigned char supported[] = {1, 2, 4, 8, 16, 32, 64};
- int i;
-
- for (i = 0; i < ARRAY_SIZE(supported); i++)
- if (val == supported[i])
- return i;
-
- return -EINVAL;
-}
-
-static int ad7606_write_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int val,
- int val2,
- long mask)
-{
- struct ad7606_state *st = iio_priv(indio_dev);
- DECLARE_BITMAP(values, 3);
- int ret, i;
-
- switch (mask) {
- case IIO_CHAN_INFO_SCALE:
- ret = -EINVAL;
- mutex_lock(&st->lock);
- for (i = 0; i < ARRAY_SIZE(scale_avail); i++)
- if (val2 == scale_avail[i][1]) {
- gpiod_set_value(st->gpio_range, i);
- st->range = i;
-
- ret = 0;
- break;
- }
- mutex_unlock(&st->lock);
-
- return ret;
- case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
- if (val2)
- return -EINVAL;
- ret = ad7606_oversampling_get_index(val);
- if (ret < 0)
- return ret;
-
- values[0] = ret;
-
- mutex_lock(&st->lock);
- gpiod_set_array_value(3, st->gpio_os->desc, st->gpio_os->info,
- values);
- st->oversampling = val;
- mutex_unlock(&st->lock);
-
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static IIO_CONST_ATTR(oversampling_ratio_available, "1 2 4 8 16 32 64");
-
-static struct attribute *ad7606_attributes_os_and_range[] = {
- &iio_dev_attr_in_voltage_scale_available.dev_attr.attr,
- &iio_const_attr_oversampling_ratio_available.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad7606_attribute_group_os_and_range = {
- .attrs = ad7606_attributes_os_and_range,
-};
-
-static struct attribute *ad7606_attributes_os[] = {
- &iio_const_attr_oversampling_ratio_available.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad7606_attribute_group_os = {
- .attrs = ad7606_attributes_os,
-};
-
-static struct attribute *ad7606_attributes_range[] = {
- &iio_dev_attr_in_voltage_scale_available.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad7606_attribute_group_range = {
- .attrs = ad7606_attributes_range,
-};
-
-#define AD760X_CHANNEL(num, mask) \
- { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .channel = num, \
- .address = num, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),\
- .info_mask_shared_by_all = mask, \
- .scan_index = num, \
- .scan_type = { \
- .sign = 's', \
- .realbits = 16, \
- .storagebits = 16, \
- .endianness = IIO_CPU, \
- }, \
- }
-
-#define AD7605_CHANNEL(num) \
- AD760X_CHANNEL(num, 0)
-
-#define AD7606_CHANNEL(num) \
- AD760X_CHANNEL(num, BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO))
-
-static const struct iio_chan_spec ad7605_channels[] = {
- IIO_CHAN_SOFT_TIMESTAMP(4),
- AD7605_CHANNEL(0),
- AD7605_CHANNEL(1),
- AD7605_CHANNEL(2),
- AD7605_CHANNEL(3),
-};
-
-static const struct iio_chan_spec ad7606_channels[] = {
- IIO_CHAN_SOFT_TIMESTAMP(8),
- AD7606_CHANNEL(0),
- AD7606_CHANNEL(1),
- AD7606_CHANNEL(2),
- AD7606_CHANNEL(3),
- AD7606_CHANNEL(4),
- AD7606_CHANNEL(5),
- AD7606_CHANNEL(6),
- AD7606_CHANNEL(7),
-};
-
-static const struct ad7606_chip_info ad7606_chip_info_tbl[] = {
- /*
- * More devices added in future
- */
- [ID_AD7605_4] = {
- .channels = ad7605_channels,
- .num_channels = 5,
- },
- [ID_AD7606_8] = {
- .channels = ad7606_channels,
- .num_channels = 9,
- .has_oversampling = true,
- },
- [ID_AD7606_6] = {
- .channels = ad7606_channels,
- .num_channels = 7,
- .has_oversampling = true,
- },
- [ID_AD7606_4] = {
- .channels = ad7606_channels,
- .num_channels = 5,
- .has_oversampling = true,
- },
-};
-
-static int ad7606_request_gpios(struct ad7606_state *st)
-{
- struct device *dev = st->dev;
-
- st->gpio_convst = devm_gpiod_get(dev, "conversion-start",
- GPIOD_OUT_LOW);
- if (IS_ERR(st->gpio_convst))
- return PTR_ERR(st->gpio_convst);
-
- st->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
- if (IS_ERR(st->gpio_reset))
- return PTR_ERR(st->gpio_reset);
-
- st->gpio_range = devm_gpiod_get_optional(dev, "range", GPIOD_OUT_LOW);
- if (IS_ERR(st->gpio_range))
- return PTR_ERR(st->gpio_range);
-
- st->gpio_standby = devm_gpiod_get_optional(dev, "standby",
- GPIOD_OUT_HIGH);
- if (IS_ERR(st->gpio_standby))
- return PTR_ERR(st->gpio_standby);
-
- st->gpio_frstdata = devm_gpiod_get_optional(dev, "first-data",
- GPIOD_IN);
- if (IS_ERR(st->gpio_frstdata))
- return PTR_ERR(st->gpio_frstdata);
-
- if (!st->chip_info->has_oversampling)
- return 0;
-
- st->gpio_os = devm_gpiod_get_array_optional(dev, "oversampling-ratio",
- GPIOD_OUT_LOW);
- return PTR_ERR_OR_ZERO(st->gpio_os);
-}
-
-/**
- * Interrupt handler
- */
-static irqreturn_t ad7606_interrupt(int irq, void *dev_id)
-{
- struct iio_dev *indio_dev = dev_id;
- struct ad7606_state *st = iio_priv(indio_dev);
-
- if (iio_buffer_enabled(indio_dev)) {
- schedule_work(&st->poll_work);
- } else {
- st->done = true;
- wake_up_interruptible(&st->wq_data_avail);
- }
-
- return IRQ_HANDLED;
-};
-
-static const struct iio_info ad7606_info_no_os_or_range = {
- .read_raw = &ad7606_read_raw,
-};
-
-static const struct iio_info ad7606_info_os_and_range = {
- .read_raw = &ad7606_read_raw,
- .write_raw = &ad7606_write_raw,
- .attrs = &ad7606_attribute_group_os_and_range,
-};
-
-static const struct iio_info ad7606_info_os = {
- .read_raw = &ad7606_read_raw,
- .write_raw = &ad7606_write_raw,
- .attrs = &ad7606_attribute_group_os,
-};
-
-static const struct iio_info ad7606_info_range = {
- .read_raw = &ad7606_read_raw,
- .write_raw = &ad7606_write_raw,
- .attrs = &ad7606_attribute_group_range,
-};
-
-int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
- const char *name, unsigned int id,
- const struct ad7606_bus_ops *bops)
-{
- struct ad7606_state *st;
- int ret;
- struct iio_dev *indio_dev;
-
- indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
- if (!indio_dev)
- return -ENOMEM;
-
- st = iio_priv(indio_dev);
-
- st->dev = dev;
- mutex_init(&st->lock);
- st->bops = bops;
- st->base_address = base_address;
- /* tied to logic low, analog input range is +/- 5V */
- st->range = 0;
- st->oversampling = 1;
- INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring);
-
- st->reg = devm_regulator_get(dev, "avcc");
- if (IS_ERR(st->reg))
- return PTR_ERR(st->reg);
-
- ret = regulator_enable(st->reg);
- if (ret) {
- dev_err(dev, "Failed to enable specified AVcc supply\n");
- return ret;
- }
-
- st->chip_info = &ad7606_chip_info_tbl[id];
-
- ret = ad7606_request_gpios(st);
- if (ret)
- goto error_disable_reg;
-
- indio_dev->dev.parent = dev;
- if (st->gpio_os) {
- if (st->gpio_range)
- indio_dev->info = &ad7606_info_os_and_range;
- else
- indio_dev->info = &ad7606_info_os;
- } else {
- if (st->gpio_range)
- indio_dev->info = &ad7606_info_range;
- else
- indio_dev->info = &ad7606_info_no_os_or_range;
- }
- indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->name = name;
- indio_dev->channels = st->chip_info->channels;
- indio_dev->num_channels = st->chip_info->num_channels;
-
- init_waitqueue_head(&st->wq_data_avail);
-
- ret = ad7606_reset(st);
- if (ret)
- dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n");
-
- ret = request_irq(irq, ad7606_interrupt, IRQF_TRIGGER_FALLING, name,
- indio_dev);
- if (ret)
- goto error_disable_reg;
-
- ret = iio_triggered_buffer_setup(indio_dev, &ad7606_trigger_handler,
- NULL, NULL);
- if (ret)
- goto error_free_irq;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_unregister_ring;
-
- dev_set_drvdata(dev, indio_dev);
-
- return 0;
-error_unregister_ring:
- iio_triggered_buffer_cleanup(indio_dev);
-
-error_free_irq:
- free_irq(irq, indio_dev);
-
-error_disable_reg:
- regulator_disable(st->reg);
- return ret;
-}
-EXPORT_SYMBOL_GPL(ad7606_probe);
-
-int ad7606_remove(struct device *dev, int irq)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad7606_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- iio_triggered_buffer_cleanup(indio_dev);
-
- free_irq(irq, indio_dev);
- regulator_disable(st->reg);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(ad7606_remove);
-
-#ifdef CONFIG_PM_SLEEP
-
-static int ad7606_suspend(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad7606_state *st = iio_priv(indio_dev);
-
- if (st->gpio_standby) {
- gpiod_set_value(st->gpio_range, 1);
- gpiod_set_value(st->gpio_standby, 0);
- }
-
- return 0;
-}
-
-static int ad7606_resume(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad7606_state *st = iio_priv(indio_dev);
-
- if (st->gpio_standby) {
- gpiod_set_value(st->gpio_range, st->range);
- gpiod_set_value(st->gpio_standby, 1);
- ad7606_reset(st);
- }
-
- return 0;
-}
-
-SIMPLE_DEV_PM_OPS(ad7606_pm_ops, ad7606_suspend, ad7606_resume);
-EXPORT_SYMBOL_GPL(ad7606_pm_ops);
-
-#endif
-
-MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7606.h b/drivers/staging/iio/adc/ad7606.h
deleted file mode 100644
index 86188054b60b..000000000000
--- a/drivers/staging/iio/adc/ad7606.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * AD7606 ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#ifndef IIO_ADC_AD7606_H_
-#define IIO_ADC_AD7606_H_
-
-/**
- * struct ad7606_chip_info - chip specific information
- * @channels: channel specification
- * @num_channels: number of channels
- * @has_oversampling: whether the device has oversampling support
- */
-
-struct ad7606_chip_info {
- const struct iio_chan_spec *channels;
- unsigned int num_channels;
- bool has_oversampling;
-};
-
-/**
- * struct ad7606_state - driver instance specific data
- * @dev pointer to kernel device
- * @chip_info entry in the table of chips that describes this device
- * @reg regulator info for the the power supply of the device
- * @poll_work work struct for continuously reading data from the device
- * into an IIO triggered buffer
- * @wq_data_avail wait queue struct for buffer mode
- * @bops bus operations (SPI or parallel)
- * @range voltage range selection, selects which scale to apply
- * @oversampling oversampling selection
- * @done marks whether reading data is done
- * @base_address address from where to read data in parallel operation
- * @lock protect sensor state from concurrent accesses to GPIOs
- * @gpio_convst GPIO descriptor for conversion start signal (CONVST)
- * @gpio_reset GPIO descriptor for device hard-reset
- * @gpio_range GPIO descriptor for range selection
- * @gpio_standby GPIO descriptor for stand-by signal (STBY),
- * controls power-down mode of device
- * @gpio_frstdata GPIO descriptor for reading from device when data
- * is being read on the first channel
- * @gpio_os GPIO descriptors to control oversampling on the device
- * @data buffer for reading data from the device
- */
-
-struct ad7606_state {
- struct device *dev;
- const struct ad7606_chip_info *chip_info;
- struct regulator *reg;
- struct work_struct poll_work;
- wait_queue_head_t wq_data_avail;
- const struct ad7606_bus_ops *bops;
- unsigned int range;
- unsigned int oversampling;
- bool done;
- void __iomem *base_address;
-
- struct mutex lock; /* protect sensor state */
- struct gpio_desc *gpio_convst;
- struct gpio_desc *gpio_reset;
- struct gpio_desc *gpio_range;
- struct gpio_desc *gpio_standby;
- struct gpio_desc *gpio_frstdata;
- struct gpio_descs *gpio_os;
-
- /*
- * DMA (thus cache coherency maintenance) requires the
- * transfer buffers to live in their own cache lines.
- * 8 * 16-bit samples + 64-bit timestamp
- */
- unsigned short data[12] ____cacheline_aligned;
-};
-
-/**
- * struct ad7606_bus_ops - driver bus operations
- * @read_block function pointer for reading blocks of data
- */
-struct ad7606_bus_ops {
- /* more methods added in future? */
- int (*read_block)(struct device *dev, int num, void *data);
-};
-
-int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
- const char *name, unsigned int id,
- const struct ad7606_bus_ops *bops);
-int ad7606_remove(struct device *dev, int irq);
-
-enum ad7606_supported_device_ids {
- ID_AD7605_4,
- ID_AD7606_8,
- ID_AD7606_6,
- ID_AD7606_4
-};
-
-#ifdef CONFIG_PM_SLEEP
-extern const struct dev_pm_ops ad7606_pm_ops;
-#define AD7606_PM_OPS (&ad7606_pm_ops)
-#else
-#define AD7606_PM_OPS NULL
-#endif
-
-#endif /* IIO_ADC_AD7606_H_ */
diff --git a/drivers/staging/iio/adc/ad7606_par.c b/drivers/staging/iio/adc/ad7606_par.c
deleted file mode 100644
index 8bd86e727b02..000000000000
--- a/drivers/staging/iio/adc/ad7606_par.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * AD7606 Parallel Interface ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/types.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <linux/iio/iio.h>
-#include "ad7606.h"
-
-static int ad7606_par16_read_block(struct device *dev,
- int count, void *buf)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad7606_state *st = iio_priv(indio_dev);
-
- insw((unsigned long)st->base_address, buf, count);
-
- return 0;
-}
-
-static const struct ad7606_bus_ops ad7606_par16_bops = {
- .read_block = ad7606_par16_read_block,
-};
-
-static int ad7606_par8_read_block(struct device *dev,
- int count, void *buf)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad7606_state *st = iio_priv(indio_dev);
-
- insb((unsigned long)st->base_address, buf, count * 2);
-
- return 0;
-}
-
-static const struct ad7606_bus_ops ad7606_par8_bops = {
- .read_block = ad7606_par8_read_block,
-};
-
-static int ad7606_par_probe(struct platform_device *pdev)
-{
- const struct platform_device_id *id = platform_get_device_id(pdev);
- struct resource *res;
- void __iomem *addr;
- resource_size_t remap_size;
- int irq;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "no irq: %d\n", irq);
- return irq;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- addr = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(addr))
- return PTR_ERR(addr);
-
- remap_size = resource_size(res);
-
- return ad7606_probe(&pdev->dev, irq, addr,
- id->name, id->driver_data,
- remap_size > 1 ? &ad7606_par16_bops :
- &ad7606_par8_bops);
-}
-
-static int ad7606_par_remove(struct platform_device *pdev)
-{
- return ad7606_remove(&pdev->dev, platform_get_irq(pdev, 0));
-}
-
-static const struct platform_device_id ad7606_driver_ids[] = {
- {
- .name = "ad7605-4",
- .driver_data = ID_AD7605_4,
- }, {
- .name = "ad7606-8",
- .driver_data = ID_AD7606_8,
- }, {
- .name = "ad7606-6",
- .driver_data = ID_AD7606_6,
- }, {
- .name = "ad7606-4",
- .driver_data = ID_AD7606_4,
- },
- { }
-};
-
-MODULE_DEVICE_TABLE(platform, ad7606_driver_ids);
-
-static struct platform_driver ad7606_driver = {
- .probe = ad7606_par_probe,
- .remove = ad7606_par_remove,
- .id_table = ad7606_driver_ids,
- .driver = {
- .name = "ad7606",
- .pm = AD7606_PM_OPS,
- },
-};
-
-module_platform_driver(ad7606_driver);
-
-MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7606_spi.c b/drivers/staging/iio/adc/ad7606_spi.c
deleted file mode 100644
index b76ca5a8c059..000000000000
--- a/drivers/staging/iio/adc/ad7606_spi.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * AD7606 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/module.h>
-#include <linux/spi/spi.h>
-#include <linux/types.h>
-#include <linux/err.h>
-
-#include <linux/iio/iio.h>
-#include "ad7606.h"
-
-#define MAX_SPI_FREQ_HZ 23500000 /* VDRIVE above 4.75 V */
-
-static int ad7606_spi_read_block(struct device *dev,
- int count, void *buf)
-{
- struct spi_device *spi = to_spi_device(dev);
- int i, ret;
- unsigned short *data = buf;
- __be16 *bdata = buf;
-
- ret = spi_read(spi, buf, count * 2);
- if (ret < 0) {
- dev_err(&spi->dev, "SPI read error\n");
- return ret;
- }
-
- for (i = 0; i < count; i++)
- data[i] = be16_to_cpu(bdata[i]);
-
- return 0;
-}
-
-static const struct ad7606_bus_ops ad7606_spi_bops = {
- .read_block = ad7606_spi_read_block,
-};
-
-static int ad7606_spi_probe(struct spi_device *spi)
-{
- const struct spi_device_id *id = spi_get_device_id(spi);
-
- return ad7606_probe(&spi->dev, spi->irq, NULL,
- id->name, id->driver_data,
- &ad7606_spi_bops);
-}
-
-static int ad7606_spi_remove(struct spi_device *spi)
-{
- return ad7606_remove(&spi->dev, spi->irq);
-}
-
-static const struct spi_device_id ad7606_id[] = {
- {"ad7605-4", ID_AD7605_4},
- {"ad7606-8", ID_AD7606_8},
- {"ad7606-6", ID_AD7606_6},
- {"ad7606-4", ID_AD7606_4},
- {}
-};
-MODULE_DEVICE_TABLE(spi, ad7606_id);
-
-static struct spi_driver ad7606_driver = {
- .driver = {
- .name = "ad7606",
- .pm = AD7606_PM_OPS,
- },
- .probe = ad7606_spi_probe,
- .remove = ad7606_spi_remove,
- .id_table = ad7606_id,
-};
-module_spi_driver(ad7606_driver);
-
-MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index 5209651a1b25..ee50e7296795 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -65,7 +65,7 @@ enum ad7816_type {
static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data)
{
struct spi_device *spi_dev = chip->spi_dev;
- int ret = 0;
+ int ret;
__be16 buf;
gpiod_set_value(chip->rdwr_pin, 1);
@@ -106,7 +106,7 @@ static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data)
static int ad7816_spi_write(struct ad7816_chip_info *chip, u8 data)
{
struct spi_device *spi_dev = chip->spi_dev;
- int ret = 0;
+ int ret;
gpiod_set_value(chip->rdwr_pin, 1);
gpiod_set_value(chip->rdwr_pin, 0);
@@ -354,8 +354,7 @@ static int ad7816_probe(struct spi_device *spi_dev)
{
struct ad7816_chip_info *chip;
struct iio_dev *indio_dev;
- int ret = 0;
- int i;
+ int i, ret;
indio_dev = devm_iio_device_alloc(&spi_dev->dev, sizeof(*chip));
if (!indio_dev)
diff --git a/drivers/staging/iio/addac/adt7316-i2c.c b/drivers/staging/iio/addac/adt7316-i2c.c
index 2d51bd425662..0f26bc38edc6 100644
--- a/drivers/staging/iio/addac/adt7316-i2c.c
+++ b/drivers/staging/iio/addac/adt7316-i2c.c
@@ -43,7 +43,7 @@ static int adt7316_i2c_read(void *client, u8 reg, u8 *data)
static int adt7316_i2c_write(void *client, u8 reg, u8 data)
{
struct i2c_client *cl = client;
- int ret = 0;
+ int ret;
ret = i2c_smbus_write_byte_data(cl, reg, data);
if (ret < 0)
@@ -55,7 +55,7 @@ static int adt7316_i2c_write(void *client, u8 reg, u8 data)
static int adt7316_i2c_multi_read(void *client, u8 reg, u8 count, u8 *data)
{
struct i2c_client *cl = client;
- int i, ret = 0;
+ int i, ret;
if (count > ADT7316_REG_MAX_ADDR)
count = ADT7316_REG_MAX_ADDR;
@@ -74,7 +74,7 @@ static int adt7316_i2c_multi_read(void *client, u8 reg, u8 count, u8 *data)
static int adt7316_i2c_multi_write(void *client, u8 reg, u8 count, u8 *data)
{
struct i2c_client *cl = client;
- int i, ret = 0;
+ int i, ret;
if (count > ADT7316_REG_MAX_ADDR)
count = ADT7316_REG_MAX_ADDR;
diff --git a/drivers/staging/iio/addac/adt7316-spi.c b/drivers/staging/iio/addac/adt7316-spi.c
index e75827e326a6..8294b9c1e3c2 100644
--- a/drivers/staging/iio/addac/adt7316-spi.c
+++ b/drivers/staging/iio/addac/adt7316-spi.c
@@ -27,7 +27,7 @@ static int adt7316_spi_multi_read(void *client, u8 reg, u8 count, u8 *data)
{
struct spi_device *spi_dev = client;
u8 cmd[2];
- int ret = 0;
+ int ret;
if (count > ADT7316_REG_MAX_ADDR)
count = ADT7316_REG_MAX_ADDR;
@@ -56,7 +56,7 @@ static int adt7316_spi_multi_write(void *client, u8 reg, u8 count, u8 *data)
{
struct spi_device *spi_dev = client;
u8 buf[ADT7316_REG_MAX_ADDR + 2];
- int i, ret = 0;
+ int i, ret;
if (count > ADT7316_REG_MAX_ADDR)
count = ADT7316_REG_MAX_ADDR;
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index dc93e85808e0..6f7891b567b9 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -47,6 +47,8 @@
#define ADT7516_MSB_AIN3 0xA
#define ADT7516_MSB_AIN4 0xB
#define ADT7316_DA_DATA_BASE 0x10
+#define ADT7316_DA_10_BIT_LSB_SHIFT 6
+#define ADT7316_DA_12_BIT_LSB_SHIFT 4
#define ADT7316_DA_MSB_DATA_REGS 4
#define ADT7316_LSB_DAC_A 0x10
#define ADT7316_MSB_DAC_A 0x11
@@ -59,8 +61,8 @@
#define ADT7316_CONFIG1 0x18
#define ADT7316_CONFIG2 0x19
#define ADT7316_CONFIG3 0x1A
-#define ADT7316_LDAC_CONFIG 0x1B
-#define ADT7316_DAC_CONFIG 0x1C
+#define ADT7316_DAC_CONFIG 0x1B
+#define ADT7316_LDAC_CONFIG 0x1C
#define ADT7316_INT_MASK1 0x1D
#define ADT7316_INT_MASK2 0x1E
#define ADT7316_IN_TEMP_OFFSET 0x1F
@@ -117,7 +119,7 @@
*/
#define ADT7316_ADCLK_22_5 0x1
#define ADT7316_DA_HIGH_RESOLUTION 0x2
-#define ADT7316_DA_EN_VIA_DAC_LDCA 0x4
+#define ADT7316_DA_EN_VIA_DAC_LDAC 0x8
#define ADT7516_AIN_IN_VREF 0x10
#define ADT7316_EN_IN_TEMP_PROP_DACA 0x20
#define ADT7316_EN_EX_TEMP_PROP_DACB 0x40
@@ -127,6 +129,7 @@
*/
#define ADT7316_DA_2VREF_CH_MASK 0xF
#define ADT7316_DA_EN_MODE_MASK 0x30
+#define ADT7316_DA_EN_MODE_SHIFT 4
#define ADT7316_DA_EN_MODE_SINGLE 0x00
#define ADT7316_DA_EN_MODE_AB_CD 0x10
#define ADT7316_DA_EN_MODE_ABCD 0x20
@@ -632,9 +635,7 @@ static ssize_t adt7316_show_da_high_resolution(struct device *dev,
struct adt7316_chip_info *chip = iio_priv(dev_info);
if (chip->config3 & ADT7316_DA_HIGH_RESOLUTION) {
- if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
- return sprintf(buf, "1 (12 bits)\n");
- if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
+ if (chip->id != ID_ADT7318 && chip->id != ID_ADT7519)
return sprintf(buf, "1 (10 bits)\n");
}
@@ -651,17 +652,12 @@ static ssize_t adt7316_store_da_high_resolution(struct device *dev,
u8 config3;
int ret;
- chip->dac_bits = 8;
+ if (chip->id == ID_ADT7318 || chip->id == ID_ADT7519)
+ return -EPERM;
- if (buf[0] == '1') {
- config3 = chip->config3 | ADT7316_DA_HIGH_RESOLUTION;
- if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
- chip->dac_bits = 12;
- else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
- chip->dac_bits = 10;
- } else {
- config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
- }
+ config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
+ if (buf[0] == '1')
+ config3 |= ADT7316_DA_HIGH_RESOLUTION;
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
if (ret)
@@ -851,7 +847,7 @@ static ssize_t adt7316_show_DAC_update_mode(struct device *dev,
struct iio_dev *dev_info = dev_to_iio_dev(dev);
struct adt7316_chip_info *chip = iio_priv(dev_info);
- if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
+ if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
return sprintf(buf, "manual\n");
switch (chip->dac_config & ADT7316_DA_EN_MODE_MASK) {
@@ -880,15 +876,15 @@ static ssize_t adt7316_store_DAC_update_mode(struct device *dev,
u8 data;
int ret;
- if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
+ if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
return -EPERM;
ret = kstrtou8(buf, 10, &data);
- if (ret || data > ADT7316_DA_EN_MODE_MASK)
+ if (ret || data > (ADT7316_DA_EN_MODE_MASK >> ADT7316_DA_EN_MODE_SHIFT))
return -EINVAL;
dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK);
- dac_config |= data;
+ dac_config |= data << ADT7316_DA_EN_MODE_SHIFT;
ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
if (ret)
@@ -911,7 +907,7 @@ static ssize_t adt7316_show_all_DAC_update_modes(struct device *dev,
struct iio_dev *dev_info = dev_to_iio_dev(dev);
struct adt7316_chip_info *chip = iio_priv(dev_info);
- if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA)
+ if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC)
return sprintf(buf, "0 - auto at any MSB DAC writing\n"
"1 - auto at MSB DAC AB and CD writing\n"
"2 - auto at MSB DAC ABCD writing\n"
@@ -933,7 +929,7 @@ static ssize_t adt7316_store_update_DAC(struct device *dev,
u8 data;
int ret;
- if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA) {
+ if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC) {
if ((chip->dac_config & ADT7316_DA_EN_MODE_MASK) !=
ADT7316_DA_EN_MODE_LDAC)
return -EPERM;
@@ -969,9 +965,6 @@ static ssize_t adt7316_show_DA_AB_Vref_bypass(struct device *dev,
struct iio_dev *dev_info = dev_to_iio_dev(dev);
struct adt7316_chip_info *chip = iio_priv(dev_info);
- if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
- return -EPERM;
-
return sprintf(buf, "%d\n",
!!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_AB));
}
@@ -986,9 +979,6 @@ static ssize_t adt7316_store_DA_AB_Vref_bypass(struct device *dev,
u8 dac_config;
int ret;
- if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
- return -EPERM;
-
dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB);
if (buf[0] == '1')
dac_config |= ADT7316_VREF_BYPASS_DAC_AB;
@@ -1014,9 +1004,6 @@ static ssize_t adt7316_show_DA_CD_Vref_bypass(struct device *dev,
struct iio_dev *dev_info = dev_to_iio_dev(dev);
struct adt7316_chip_info *chip = iio_priv(dev_info);
- if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
- return -EPERM;
-
return sprintf(buf, "%d\n",
!!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_CD));
}
@@ -1031,9 +1018,6 @@ static ssize_t adt7316_store_DA_CD_Vref_bypass(struct device *dev,
u8 dac_config;
int ret;
- if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
- return -EPERM;
-
dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD);
if (buf[0] == '1')
dac_config |= ADT7316_VREF_BYPASS_DAC_CD;
@@ -1061,10 +1045,10 @@ static ssize_t adt7316_show_DAC_internal_Vref(struct device *dev,
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
return sprintf(buf, "0x%x\n",
- (chip->dac_config & ADT7516_DAC_IN_VREF_MASK) >>
+ (chip->ldac_config & ADT7516_DAC_IN_VREF_MASK) >>
ADT7516_DAC_IN_VREF_OFFSET);
return sprintf(buf, "%d\n",
- !!(chip->dac_config & ADT7316_DAC_IN_VREF));
+ !!(chip->ldac_config & ADT7316_DAC_IN_VREF));
}
static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,
@@ -1086,7 +1070,7 @@ static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,
ldac_config = chip->ldac_config & (~ADT7516_DAC_IN_VREF_MASK);
if (data & 0x1)
ldac_config |= ADT7516_DAC_AB_IN_VREF;
- else if (data & 0x2)
+ if (data & 0x2)
ldac_config |= ADT7516_DAC_CD_IN_VREF;
} else {
ret = kstrtou8(buf, 16, &data);
@@ -1410,7 +1394,7 @@ static IIO_DEVICE_ATTR(ex_analog_temp_offset, 0644,
static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
int channel, char *buf)
{
- u16 data;
+ u16 data = 0;
u8 msb, lsb, offset;
int ret;
@@ -1435,7 +1419,11 @@ static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
if (ret)
return -EIO;
- data = (msb << offset) + (lsb & ((1 << offset) - 1));
+ if (chip->dac_bits == 12)
+ data = lsb >> ADT7316_DA_12_BIT_LSB_SHIFT;
+ else if (chip->dac_bits == 10)
+ data = lsb >> ADT7316_DA_10_BIT_LSB_SHIFT;
+ data |= msb << offset;
return sprintf(buf, "%d\n", data);
}
@@ -1443,7 +1431,7 @@ static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
static ssize_t adt7316_store_DAC(struct adt7316_chip_info *chip,
int channel, const char *buf, size_t len)
{
- u8 msb, lsb, offset;
+ u8 msb, lsb, lsb_reg, offset;
u16 data;
int ret;
@@ -1461,9 +1449,13 @@ static ssize_t adt7316_store_DAC(struct adt7316_chip_info *chip,
return -EINVAL;
if (chip->dac_bits > 8) {
- lsb = data & (1 << offset);
+ lsb = data & ((1 << offset) - 1);
+ if (chip->dac_bits == 12)
+ lsb_reg = lsb << ADT7316_DA_12_BIT_LSB_SHIFT;
+ else
+ lsb_reg = lsb << ADT7316_DA_10_BIT_LSB_SHIFT;
ret = chip->bus.write(chip->bus.client,
- ADT7316_DA_DATA_BASE + channel * 2, lsb);
+ ADT7316_DA_DATA_BASE + channel * 2, lsb_reg);
if (ret)
return -EIO;
}
@@ -1710,8 +1702,6 @@ static struct attribute *adt7516_attributes[] = {
&iio_dev_attr_DAC_update_mode.dev_attr.attr,
&iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
&iio_dev_attr_update_DAC.dev_attr.attr,
- &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
- &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
&iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
&iio_dev_attr_VDD.dev_attr.attr,
&iio_dev_attr_in_temp.dev_attr.attr,
@@ -1809,6 +1799,43 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
return IRQ_HANDLED;
}
+static int adt7316_setup_irq(struct iio_dev *indio_dev)
+{
+ struct adt7316_chip_info *chip = iio_priv(indio_dev);
+ int irq_type, ret;
+
+ irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq));
+
+ switch (irq_type) {
+ case IRQF_TRIGGER_HIGH:
+ case IRQF_TRIGGER_RISING:
+ break;
+ case IRQF_TRIGGER_LOW:
+ case IRQF_TRIGGER_FALLING:
+ break;
+ default:
+ dev_info(&indio_dev->dev, "mode %d unsupported, using IRQF_TRIGGER_LOW\n",
+ irq_type);
+ irq_type = IRQF_TRIGGER_LOW;
+ break;
+ }
+
+ ret = devm_request_threaded_irq(&indio_dev->dev, chip->bus.irq,
+ NULL, adt7316_event_handler,
+ irq_type | IRQF_ONESHOT,
+ indio_dev->name, indio_dev);
+ if (ret) {
+ dev_err(&indio_dev->dev, "failed to request irq %d\n",
+ chip->bus.irq);
+ return ret;
+ }
+
+ if (irq_type & IRQF_TRIGGER_HIGH)
+ chip->config1 |= ADT7316_INT_POLARITY;
+
+ return 0;
+}
+
/*
* Show mask of enabled interrupts in Hex.
*/
@@ -2103,9 +2130,7 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
{
struct adt7316_chip_info *chip;
struct iio_dev *indio_dev;
- unsigned short *adt7316_platform_data = dev->platform_data;
- int irq_type = IRQF_TRIGGER_LOW;
- int ret = 0;
+ int ret;
indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
if (!indio_dev)
@@ -2123,6 +2148,13 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
else
return -ENODEV;
+ if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
+ chip->dac_bits = 12;
+ else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
+ chip->dac_bits = 10;
+ else
+ chip->dac_bits = 8;
+
chip->ldac_pin = devm_gpiod_get_optional(dev, "adi,ldac", GPIOD_OUT_LOW);
if (IS_ERR(chip->ldac_pin)) {
ret = PTR_ERR(chip->ldac_pin);
@@ -2130,8 +2162,8 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
return ret;
}
- if (chip->ldac_pin) {
- chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDCA;
+ if (!chip->ldac_pin) {
+ chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDAC;
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
chip->config1 |= ADT7516_SEL_AIN3;
}
@@ -2148,20 +2180,9 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
indio_dev->modes = INDIO_DIRECT_MODE;
if (chip->bus.irq > 0) {
- if (adt7316_platform_data[0])
- irq_type = adt7316_platform_data[0];
-
- ret = devm_request_threaded_irq(dev, chip->bus.irq,
- NULL,
- adt7316_event_handler,
- irq_type | IRQF_ONESHOT,
- indio_dev->name,
- indio_dev);
+ ret = adt7316_setup_irq(indio_dev);
if (ret)
return ret;
-
- if (irq_type & IRQF_TRIGGER_HIGH)
- chip->config1 |= ADT7316_INT_POLARITY;
}
ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
diff --git a/drivers/staging/iio/cdc/Kconfig b/drivers/staging/iio/cdc/Kconfig
index 80211df8c577..b97478e7cbd0 100644
--- a/drivers/staging/iio/cdc/Kconfig
+++ b/drivers/staging/iio/cdc/Kconfig
@@ -13,16 +13,6 @@ config AD7150
To compile this driver as a module, choose M here: the
module will be called ad7150.
-config AD7152
- tristate "Analog Devices ad7152/3 capacitive sensor driver"
- depends on I2C
- help
- Say yes here to build support for Analog Devices capacitive sensors.
- (ad7152, ad7153) Provides direct access via sysfs.
-
- To compile this driver as a module, choose M here: the
- module will be called ad7152.
-
config AD7746
tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
depends on I2C
diff --git a/drivers/staging/iio/cdc/Makefile b/drivers/staging/iio/cdc/Makefile
index a5fbabf5c8bf..1466bc31f244 100644
--- a/drivers/staging/iio/cdc/Makefile
+++ b/drivers/staging/iio/cdc/Makefile
@@ -3,5 +3,4 @@
#
obj-$(CONFIG_AD7150) += ad7150.o
-obj-$(CONFIG_AD7152) += ad7152.o
obj-$(CONFIG_AD7746) += ad7746.o
diff --git a/drivers/staging/iio/cdc/ad7152.c b/drivers/staging/iio/cdc/ad7152.c
deleted file mode 100644
index 25f51db05d2d..000000000000
--- a/drivers/staging/iio/cdc/ad7152.c
+++ /dev/null
@@ -1,552 +0,0 @@
-/*
- * AD7152 capacitive sensor driver supporting AD7152/3
- *
- * Copyright 2010-2011a Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/i2c.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-/*
- * TODO: Check compliance of calibbias with abi (units)
- */
-/*
- * AD7152 registers definition
- */
-
-#define AD7152_REG_STATUS 0
-#define AD7152_REG_CH1_DATA_HIGH 1
-#define AD7152_REG_CH2_DATA_HIGH 3
-#define AD7152_REG_CH1_OFFS_HIGH 5
-#define AD7152_REG_CH2_OFFS_HIGH 7
-#define AD7152_REG_CH1_GAIN_HIGH 9
-#define AD7152_REG_CH1_SETUP 11
-#define AD7152_REG_CH2_GAIN_HIGH 12
-#define AD7152_REG_CH2_SETUP 14
-#define AD7152_REG_CFG 15
-#define AD7152_REG_RESEVERD 16
-#define AD7152_REG_CAPDAC_POS 17
-#define AD7152_REG_CAPDAC_NEG 18
-#define AD7152_REG_CFG2 26
-
-/* Status Register Bit Designations (AD7152_REG_STATUS) */
-#define AD7152_STATUS_RDY1 BIT(0)
-#define AD7152_STATUS_RDY2 BIT(1)
-#define AD7152_STATUS_C1C2 BIT(2)
-#define AD7152_STATUS_PWDN BIT(7)
-
-/* Setup Register Bit Designations (AD7152_REG_CHx_SETUP) */
-#define AD7152_SETUP_CAPDIFF BIT(5)
-#define AD7152_SETUP_RANGE_2pF (0 << 6)
-#define AD7152_SETUP_RANGE_0_5pF (1 << 6)
-#define AD7152_SETUP_RANGE_1pF (2 << 6)
-#define AD7152_SETUP_RANGE_4pF (3 << 6)
-#define AD7152_SETUP_RANGE(x) ((x) << 6)
-
-/* Config Register Bit Designations (AD7152_REG_CFG) */
-#define AD7152_CONF_CH2EN BIT(3)
-#define AD7152_CONF_CH1EN BIT(4)
-#define AD7152_CONF_MODE_IDLE (0 << 0)
-#define AD7152_CONF_MODE_CONT_CONV (1 << 0)
-#define AD7152_CONF_MODE_SINGLE_CONV (2 << 0)
-#define AD7152_CONF_MODE_OFFS_CAL (5 << 0)
-#define AD7152_CONF_MODE_GAIN_CAL (6 << 0)
-
-/* Capdac Register Bit Designations (AD7152_REG_CAPDAC_XXX) */
-#define AD7152_CAPDAC_DACEN BIT(7)
-#define AD7152_CAPDAC_DACP(x) ((x) & 0x1F)
-
-/* CFG2 Register Bit Designations (AD7152_REG_CFG2) */
-#define AD7152_CFG2_OSR(x) (((x) & 0x3) << 4)
-
-enum {
- AD7152_DATA,
- AD7152_OFFS,
- AD7152_GAIN,
- AD7152_SETUP
-};
-
-/*
- * struct ad7152_chip_info - chip specific information
- */
-
-struct ad7152_chip_info {
- struct i2c_client *client;
- /*
- * Capacitive channel digital filter setup;
- * conversion time/update rate setup per channel
- */
- u8 filter_rate_setup;
- u8 setup[2];
- struct mutex state_lock; /* protect hardware state */
-};
-
-static inline ssize_t ad7152_start_calib(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len,
- u8 regval)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct ad7152_chip_info *chip = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- bool doit;
- int ret, timeout = 10;
-
- ret = strtobool(buf, &doit);
- if (ret < 0)
- return ret;
-
- if (!doit)
- return 0;
-
- if (this_attr->address == 0)
- regval |= AD7152_CONF_CH1EN;
- else
- regval |= AD7152_CONF_CH2EN;
-
- mutex_lock(&chip->state_lock);
- ret = i2c_smbus_write_byte_data(chip->client, AD7152_REG_CFG, regval);
- if (ret < 0)
- goto unlock;
-
- do {
- mdelay(20);
- ret = i2c_smbus_read_byte_data(chip->client, AD7152_REG_CFG);
- if (ret < 0)
- goto unlock;
-
- } while ((ret == regval) && timeout--);
-
- mutex_unlock(&chip->state_lock);
- return len;
-
-unlock:
- mutex_unlock(&chip->state_lock);
- return ret;
-}
-
-static ssize_t ad7152_start_offset_calib(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- return ad7152_start_calib(dev, attr, buf, len,
- AD7152_CONF_MODE_OFFS_CAL);
-}
-
-static ssize_t ad7152_start_gain_calib(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- return ad7152_start_calib(dev, attr, buf, len,
- AD7152_CONF_MODE_GAIN_CAL);
-}
-
-static IIO_DEVICE_ATTR(in_capacitance0_calibbias_calibration,
- 0200, NULL, ad7152_start_offset_calib, 0);
-static IIO_DEVICE_ATTR(in_capacitance1_calibbias_calibration,
- 0200, NULL, ad7152_start_offset_calib, 1);
-static IIO_DEVICE_ATTR(in_capacitance0_calibscale_calibration,
- 0200, NULL, ad7152_start_gain_calib, 0);
-static IIO_DEVICE_ATTR(in_capacitance1_calibscale_calibration,
- 0200, NULL, ad7152_start_gain_calib, 1);
-
-/* Values are Update Rate (Hz), Conversion Time (ms) + 1*/
-static const unsigned char ad7152_filter_rate_table[][2] = {
- {200, 5 + 1}, {50, 20 + 1}, {20, 50 + 1}, {17, 60 + 1},
-};
-
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("200 50 20 17");
-
-static IIO_CONST_ATTR(in_capacitance_scale_available,
- "0.000061050 0.000030525 0.000015263 0.000007631");
-
-static struct attribute *ad7152_attributes[] = {
- &iio_dev_attr_in_capacitance0_calibbias_calibration.dev_attr.attr,
- &iio_dev_attr_in_capacitance1_calibbias_calibration.dev_attr.attr,
- &iio_dev_attr_in_capacitance0_calibscale_calibration.dev_attr.attr,
- &iio_dev_attr_in_capacitance1_calibscale_calibration.dev_attr.attr,
- &iio_const_attr_in_capacitance_scale_available.dev_attr.attr,
- &iio_const_attr_sampling_frequency_available.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad7152_attribute_group = {
- .attrs = ad7152_attributes,
-};
-
-static const u8 ad7152_addresses[][4] = {
- { AD7152_REG_CH1_DATA_HIGH, AD7152_REG_CH1_OFFS_HIGH,
- AD7152_REG_CH1_GAIN_HIGH, AD7152_REG_CH1_SETUP },
- { AD7152_REG_CH2_DATA_HIGH, AD7152_REG_CH2_OFFS_HIGH,
- AD7152_REG_CH2_GAIN_HIGH, AD7152_REG_CH2_SETUP },
-};
-
-/* Values are nano relative to pf base. */
-static const int ad7152_scale_table[] = {
- 30525, 7631, 15263, 61050
-};
-
-/**
- * read_raw handler for IIO_CHAN_INFO_SAMP_FREQ
- *
- * lock must be held
- **/
-static int ad7152_read_raw_samp_freq(struct device *dev, int *val)
-{
- struct ad7152_chip_info *chip = iio_priv(dev_to_iio_dev(dev));
-
- *val = ad7152_filter_rate_table[chip->filter_rate_setup][0];
-
- return 0;
-}
-
-/**
- * write_raw handler for IIO_CHAN_INFO_SAMP_FREQ
- *
- * lock must be held
- **/
-static int ad7152_write_raw_samp_freq(struct device *dev, int val)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct ad7152_chip_info *chip = iio_priv(indio_dev);
- int ret, i;
-
- for (i = 0; i < ARRAY_SIZE(ad7152_filter_rate_table); i++)
- if (val >= ad7152_filter_rate_table[i][0])
- break;
-
- if (i >= ARRAY_SIZE(ad7152_filter_rate_table))
- i = ARRAY_SIZE(ad7152_filter_rate_table) - 1;
-
- ret = i2c_smbus_write_byte_data(chip->client,
- AD7152_REG_CFG2, AD7152_CFG2_OSR(i));
- if (ret < 0)
- return ret;
-
- chip->filter_rate_setup = i;
-
- return ret;
-}
-
-static int ad7152_write_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int val,
- int val2,
- long mask)
-{
- struct ad7152_chip_info *chip = iio_priv(indio_dev);
- int ret, i;
-
- mutex_lock(&chip->state_lock);
-
- switch (mask) {
- case IIO_CHAN_INFO_CALIBSCALE:
- if (val != 1) {
- ret = -EINVAL;
- goto out;
- }
-
- val = (val2 * 1024) / 15625;
-
- ret = i2c_smbus_write_word_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_GAIN],
- swab16(val));
- if (ret < 0)
- goto out;
-
- ret = 0;
- break;
-
- case IIO_CHAN_INFO_CALIBBIAS:
- if ((val < 0) | (val > 0xFFFF)) {
- ret = -EINVAL;
- goto out;
- }
- ret = i2c_smbus_write_word_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_OFFS],
- swab16(val));
- if (ret < 0)
- goto out;
-
- ret = 0;
- break;
- case IIO_CHAN_INFO_SCALE:
- if (val) {
- ret = -EINVAL;
- goto out;
- }
- for (i = 0; i < ARRAY_SIZE(ad7152_scale_table); i++)
- if (val2 == ad7152_scale_table[i])
- break;
-
- chip->setup[chan->channel] &= ~AD7152_SETUP_RANGE_4pF;
- chip->setup[chan->channel] |= AD7152_SETUP_RANGE(i);
-
- ret = i2c_smbus_write_byte_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_SETUP],
- chip->setup[chan->channel]);
- if (ret < 0)
- goto out;
-
- ret = 0;
- break;
- case IIO_CHAN_INFO_SAMP_FREQ:
- if (val2) {
- ret = -EINVAL;
- goto out;
- }
- ret = ad7152_write_raw_samp_freq(&indio_dev->dev, val);
- if (ret < 0)
- goto out;
-
- ret = 0;
- break;
- default:
- ret = -EINVAL;
- }
-
-out:
- mutex_unlock(&chip->state_lock);
- return ret;
-}
-
-static int ad7152_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val, int *val2,
- long mask)
-{
- struct ad7152_chip_info *chip = iio_priv(indio_dev);
- int ret;
- u8 regval = 0;
-
- mutex_lock(&chip->state_lock);
-
- switch (mask) {
- case IIO_CHAN_INFO_RAW:
- /* First set whether in differential mode */
-
- regval = chip->setup[chan->channel];
-
- if (chan->differential)
- chip->setup[chan->channel] |= AD7152_SETUP_CAPDIFF;
- else
- chip->setup[chan->channel] &= ~AD7152_SETUP_CAPDIFF;
-
- if (regval != chip->setup[chan->channel]) {
- ret = i2c_smbus_write_byte_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_SETUP],
- chip->setup[chan->channel]);
- if (ret < 0)
- goto out;
- }
- /* Make sure the channel is enabled */
- if (chan->channel == 0)
- regval = AD7152_CONF_CH1EN;
- else
- regval = AD7152_CONF_CH2EN;
-
- /* Trigger a single read */
- regval |= AD7152_CONF_MODE_SINGLE_CONV;
- ret = i2c_smbus_write_byte_data(chip->client, AD7152_REG_CFG,
- regval);
- if (ret < 0)
- goto out;
-
- msleep(ad7152_filter_rate_table[chip->filter_rate_setup][1]);
- /* Now read the actual register */
- ret = i2c_smbus_read_word_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_DATA]);
- if (ret < 0)
- goto out;
- *val = swab16(ret);
-
- if (chan->differential)
- *val -= 0x8000;
-
- ret = IIO_VAL_INT;
- break;
- case IIO_CHAN_INFO_CALIBSCALE:
-
- ret = i2c_smbus_read_word_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_GAIN]);
- if (ret < 0)
- goto out;
- /* 1 + gain_val / 2^16 */
- *val = 1;
- *val2 = (15625 * swab16(ret)) / 1024;
-
- ret = IIO_VAL_INT_PLUS_MICRO;
- break;
- case IIO_CHAN_INFO_CALIBBIAS:
- ret = i2c_smbus_read_word_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_OFFS]);
- if (ret < 0)
- goto out;
- *val = swab16(ret);
-
- ret = IIO_VAL_INT;
- break;
- case IIO_CHAN_INFO_SCALE:
- ret = i2c_smbus_read_byte_data(chip->client,
- ad7152_addresses[chan->channel][AD7152_SETUP]);
- if (ret < 0)
- goto out;
- *val = 0;
- *val2 = ad7152_scale_table[ret >> 6];
-
- ret = IIO_VAL_INT_PLUS_NANO;
- break;
- case IIO_CHAN_INFO_SAMP_FREQ:
- ret = ad7152_read_raw_samp_freq(&indio_dev->dev, val);
- if (ret < 0)
- goto out;
-
- ret = IIO_VAL_INT;
- break;
- default:
- ret = -EINVAL;
- }
-out:
- mutex_unlock(&chip->state_lock);
- return ret;
-}
-
-static int ad7152_write_raw_get_fmt(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- long mask)
-{
- switch (mask) {
- case IIO_CHAN_INFO_SCALE:
- return IIO_VAL_INT_PLUS_NANO;
- default:
- return IIO_VAL_INT_PLUS_MICRO;
- }
-}
-
-static const struct iio_info ad7152_info = {
- .attrs = &ad7152_attribute_group,
- .read_raw = ad7152_read_raw,
- .write_raw = ad7152_write_raw,
- .write_raw_get_fmt = ad7152_write_raw_get_fmt,
-};
-
-static const struct iio_chan_spec ad7152_channels[] = {
- {
- .type = IIO_CAPACITANCE,
- .indexed = 1,
- .channel = 0,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_CALIBSCALE) |
- BIT(IIO_CHAN_INFO_CALIBBIAS) |
- BIT(IIO_CHAN_INFO_SCALE),
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
- }, {
- .type = IIO_CAPACITANCE,
- .differential = 1,
- .indexed = 1,
- .channel = 0,
- .channel2 = 2,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_CALIBSCALE) |
- BIT(IIO_CHAN_INFO_CALIBBIAS) |
- BIT(IIO_CHAN_INFO_SCALE),
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
- }, {
- .type = IIO_CAPACITANCE,
- .indexed = 1,
- .channel = 1,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_CALIBSCALE) |
- BIT(IIO_CHAN_INFO_CALIBBIAS) |
- BIT(IIO_CHAN_INFO_SCALE),
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
- }, {
- .type = IIO_CAPACITANCE,
- .differential = 1,
- .indexed = 1,
- .channel = 1,
- .channel2 = 3,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_CALIBSCALE) |
- BIT(IIO_CHAN_INFO_CALIBBIAS) |
- BIT(IIO_CHAN_INFO_SCALE),
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
- }
-};
-
-/*
- * device probe and remove
- */
-
-static int ad7152_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int ret = 0;
- struct ad7152_chip_info *chip;
- struct iio_dev *indio_dev;
-
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
- if (!indio_dev)
- return -ENOMEM;
- chip = iio_priv(indio_dev);
- /* this is only used for device removal purposes */
- i2c_set_clientdata(client, indio_dev);
-
- chip->client = client;
- mutex_init(&chip->state_lock);
-
- /* Establish that the iio_dev is a child of the i2c device */
- indio_dev->name = id->name;
- indio_dev->dev.parent = &client->dev;
- indio_dev->info = &ad7152_info;
- indio_dev->channels = ad7152_channels;
- if (id->driver_data == 0)
- indio_dev->num_channels = ARRAY_SIZE(ad7152_channels);
- else
- indio_dev->num_channels = 2;
- indio_dev->num_channels = ARRAY_SIZE(ad7152_channels);
- indio_dev->modes = INDIO_DIRECT_MODE;
-
- ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
- if (ret)
- return ret;
-
- dev_err(&client->dev, "%s capacitive sensor registered\n", id->name);
-
- return 0;
-}
-
-static const struct i2c_device_id ad7152_id[] = {
- { "ad7152", 0 },
- { "ad7153", 1 },
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, ad7152_id);
-
-static struct i2c_driver ad7152_driver = {
- .driver = {
- .name = KBUILD_MODNAME,
- },
- .probe = ad7152_probe,
- .id_table = ad7152_id,
-};
-module_i2c_driver(ad7152_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices AD7152/3 capacitive sensor driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c
index 1e977014fe5f..0b0287503fb4 100644
--- a/drivers/staging/iio/frequency/ad9834.c
+++ b/drivers/staging/iio/frequency/ad9834.c
@@ -6,6 +6,7 @@
* Licensed under the GPL-2.
*/
+#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/device.h>
@@ -71,7 +72,7 @@
struct ad9834_state {
struct spi_device *spi;
struct regulator *reg;
- unsigned int mclk;
+ struct clk *mclk;
unsigned short control;
unsigned short devid;
struct spi_transfer xfer;
@@ -110,12 +111,15 @@ static unsigned int ad9834_calc_freqreg(unsigned long mclk, unsigned long fout)
static int ad9834_write_frequency(struct ad9834_state *st,
unsigned long addr, unsigned long fout)
{
+ unsigned long clk_freq;
unsigned long regval;
- if (fout > (st->mclk / 2))
+ clk_freq = clk_get_rate(st->mclk);
+
+ if (fout > (clk_freq / 2))
return -EINVAL;
- regval = ad9834_calc_freqreg(st->mclk, fout);
+ regval = ad9834_calc_freqreg(clk_freq, fout);
st->freq_data[0] = cpu_to_be16(addr | (regval &
RES_MASK(AD9834_FREQ_BITS / 2)));
@@ -389,16 +393,11 @@ static const struct iio_info ad9833_info = {
static int ad9834_probe(struct spi_device *spi)
{
- struct ad9834_platform_data *pdata = dev_get_platdata(&spi->dev);
struct ad9834_state *st;
struct iio_dev *indio_dev;
struct regulator *reg;
int ret;
- if (!pdata) {
- dev_dbg(&spi->dev, "no platform data?\n");
- return -ENODEV;
- }
reg = devm_regulator_get(&spi->dev, "avdd");
if (IS_ERR(reg))
@@ -418,7 +417,14 @@ static int ad9834_probe(struct spi_device *spi)
spi_set_drvdata(spi, indio_dev);
st = iio_priv(indio_dev);
mutex_init(&st->lock);
- st->mclk = pdata->mclk;
+ st->mclk = devm_clk_get(&spi->dev, NULL);
+
+ ret = clk_prepare_enable(st->mclk);
+ if (ret) {
+ dev_err(&spi->dev, "Failed to enable master clock\n");
+ goto error_disable_reg;
+ }
+
st->spi = spi;
st->devid = spi_get_device_id(spi)->driver_data;
st->reg = reg;
@@ -454,42 +460,41 @@ static int ad9834_probe(struct spi_device *spi)
spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
st->control = AD9834_B28 | AD9834_RESET;
+ st->control |= AD9834_DIV2;
- if (!pdata->en_div2)
- st->control |= AD9834_DIV2;
-
- if (!pdata->en_signbit_msb_out && (st->devid == ID_AD9834))
+ if (st->devid == ID_AD9834)
st->control |= AD9834_SIGN_PIB;
st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
ret = spi_sync(st->spi, &st->msg);
if (ret) {
dev_err(&spi->dev, "device init failed\n");
- goto error_disable_reg;
+ goto error_clock_unprepare;
}
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, pdata->freq0);
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, 1000000);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, pdata->freq1);
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, 5000000);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_phase(st, AD9834_REG_PHASE0, pdata->phase0);
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE0, 512);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
- ret = ad9834_write_phase(st, AD9834_REG_PHASE1, pdata->phase1);
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE1, 1024);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_disable_reg;
+ goto error_clock_unprepare;
return 0;
-
+error_clock_unprepare:
+ clk_disable_unprepare(st->mclk);
error_disable_reg:
regulator_disable(reg);
@@ -502,6 +507,7 @@ static int ad9834_remove(struct spi_device *spi)
struct ad9834_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
+ clk_disable_unprepare(st->mclk);
regulator_disable(st->reg);
return 0;
diff --git a/drivers/staging/iio/frequency/ad9834.h b/drivers/staging/iio/frequency/ad9834.h
index ae620f38eb49..da7e83ceedad 100644
--- a/drivers/staging/iio/frequency/ad9834.h
+++ b/drivers/staging/iio/frequency/ad9834.h
@@ -8,32 +8,4 @@
#ifndef IIO_DDS_AD9834_H_
#define IIO_DDS_AD9834_H_
-/*
- * TODO: struct ad7887_platform_data needs to go into include/linux/iio
- */
-
-/**
- * struct ad9834_platform_data - platform specific information
- * @mclk: master clock in Hz
- * @freq0: power up freq0 tuning word in Hz
- * @freq1: power up freq1 tuning word in Hz
- * @phase0: power up phase0 value [0..4095] correlates with 0..2PI
- * @phase1: power up phase1 value [0..4095] correlates with 0..2PI
- * @en_div2: digital output/2 is passed to the SIGN BIT OUT pin
- * @en_signbit_msb_out: the MSB (or MSB/2) of the DAC data is connected to the
- * SIGN BIT OUT pin. en_div2 controls whether it is the MSB
- * or MSB/2 that is output. if en_signbit_msb_out=false,
- * the on-board comparator is connected to SIGN BIT OUT
- */
-
-struct ad9834_platform_data {
- unsigned int mclk;
- unsigned int freq0;
- unsigned int freq1;
- unsigned short phase0;
- unsigned short phase1;
- bool en_div2;
- bool en_signbit_msb_out;
-};
-
#endif /* IIO_DDS_AD9834_H_ */
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 9e52384f5370..3134295f014f 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -16,6 +16,7 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/clk.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@@ -82,21 +83,10 @@
#define AD5933_POLL_TIME_ms 10
#define AD5933_INIT_EXCITATION_TIME_ms 100
-/**
- * struct ad5933_platform_data - platform specific data
- * @ext_clk_hz: the external clock frequency in Hz, if not set
- * the driver uses the internal clock (16.776 MHz)
- * @vref_mv: the external reference voltage in millivolt
- */
-
-struct ad5933_platform_data {
- unsigned long ext_clk_hz;
- unsigned short vref_mv;
-};
-
struct ad5933_state {
struct i2c_client *client;
struct regulator *reg;
+ struct clk *mclk;
struct delayed_work work;
struct mutex lock; /* Protect sensor state */
unsigned long mclk_hz;
@@ -112,10 +102,6 @@ struct ad5933_state {
unsigned int poll_time_jiffies;
};
-static struct ad5933_platform_data ad5933_default_pdata = {
- .vref_mv = 3300,
-};
-
#define AD5933_CHANNEL(_type, _extend_name, _info_mask_separate, _address, \
_scan_index, _realbits) { \
.type = (_type), \
@@ -691,10 +677,10 @@ static void ad5933_work(struct work_struct *work)
static int ad5933_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- int ret, voltage_uv = 0;
- struct ad5933_platform_data *pdata = dev_get_platdata(&client->dev);
+ int ret;
struct ad5933_state *st;
struct iio_dev *indio_dev;
+ unsigned long ext_clk_hz = 0;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
if (!indio_dev)
@@ -706,9 +692,6 @@ static int ad5933_probe(struct i2c_client *client,
mutex_init(&st->lock);
- if (!pdata)
- pdata = &ad5933_default_pdata;
-
st->reg = devm_regulator_get(&client->dev, "vdd");
if (IS_ERR(st->reg))
return PTR_ERR(st->reg);
@@ -718,15 +701,28 @@ static int ad5933_probe(struct i2c_client *client,
dev_err(&client->dev, "Failed to enable specified VDD supply\n");
return ret;
}
- voltage_uv = regulator_get_voltage(st->reg);
+ ret = regulator_get_voltage(st->reg);
- if (voltage_uv)
- st->vref_mv = voltage_uv / 1000;
- else
- st->vref_mv = pdata->vref_mv;
+ if (ret < 0)
+ goto error_disable_reg;
+
+ st->vref_mv = ret / 1000;
+
+ st->mclk = devm_clk_get(&client->dev, "mclk");
+ if (IS_ERR(st->mclk) && PTR_ERR(st->mclk) != -ENOENT) {
+ ret = PTR_ERR(st->mclk);
+ goto error_disable_reg;
+ }
- if (pdata->ext_clk_hz) {
- st->mclk_hz = pdata->ext_clk_hz;
+ if (!IS_ERR(st->mclk)) {
+ ret = clk_prepare_enable(st->mclk);
+ if (ret < 0)
+ goto error_disable_reg;
+ ext_clk_hz = clk_get_rate(st->mclk);
+ }
+
+ if (ext_clk_hz) {
+ st->mclk_hz = ext_clk_hz;
st->ctrl_lb = AD5933_CTRL_EXT_SYSCLK;
} else {
st->mclk_hz = AD5933_INT_OSC_FREQ_Hz;
@@ -746,7 +742,7 @@ static int ad5933_probe(struct i2c_client *client,
ret = ad5933_register_ring_funcs_and_init(indio_dev);
if (ret)
- goto error_disable_reg;
+ goto error_disable_mclk;
ret = ad5933_setup(st);
if (ret)
@@ -760,6 +756,8 @@ static int ad5933_probe(struct i2c_client *client,
error_unreg_ring:
iio_kfifo_free(indio_dev->buffer);
+error_disable_mclk:
+ clk_disable_unprepare(st->mclk);
error_disable_reg:
regulator_disable(st->reg);
@@ -774,6 +772,7 @@ static int ad5933_remove(struct i2c_client *client)
iio_device_unregister(indio_dev);
iio_kfifo_free(indio_dev->buffer);
regulator_disable(st->reg);
+ clk_disable_unprepare(st->mclk);
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.