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staging:iio:max1363 add theshold event support

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Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2010-06-26 12:54:23 +01:00 committed by Greg Kroah-Hartman
parent 7e29a0df16
commit 440a520034
3 changed files with 721 additions and 23 deletions
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3
drivers/staging/iio/adc/adc.h
View File

@ -26,3 +26,6 @@
_show, \
NULL, \
_addr)
#define IIO_EVENT_CODE_IN_HIGH_THRESH(a) (IIO_EVENT_CODE_ADC_BASE + a)
#define IIO_EVENT_CODE_IN_LOW_THRESH(a) (IIO_EVENT_CODE_ADC_BASE + a + 32)

45
drivers/staging/iio/adc/max1363.h
View File

@ -32,14 +32,6 @@
/* Specific to the max1363 */
#define MAX1363_MON_RESET_CHAN(a) (1 << ((a) + 4))
#define MAX1363_MON_CONV_RATE_133ksps 0
#define MAX1363_MON_CONV_RATE_66_5ksps 0x02
#define MAX1363_MON_CONV_RATE_33_3ksps 0x04
#define MAX1363_MON_CONV_RATE_16_6ksps 0x06
#define MAX1363_MON_CONV_RATE_8_3ksps 0x08
#define MAX1363_MON_CONV_RATE_4_2ksps 0x0A
#define MAX1363_MON_CONV_RATE_2_0ksps 0x0C
#define MAX1363_MON_CONV_RATE_1_0ksps 0x0E
#define MAX1363_MON_INT_ENABLE 0x01
/* defined for readability reasons */
@ -67,9 +59,8 @@
/**
* struct max1363_mode - scan mode information
* @name: Name used to identify the scan mode.
* @conf: The corresponding value of the configuration register
* @numvals: The number of values returned by a single scan
* @modemask: Bit mask corresponding to channels enabled in this mode
*/
struct max1363_mode {
int8_t conf;
@ -122,15 +113,6 @@ struct max1363_mode {
.modemask = _mask \
}
/* Not currently handled */
#define MAX1363_MODE_MONITOR { \
.name = "monitor", \
.conf = MAX1363_CHANNEL_SEL(3) \
| MAX1363_CONFIG_SCAN_MONITOR_MODE \
| MAX1363_CONFIG_SE, \
.numvals = 10, \
}
/* This may seem an overly long winded way to do this, but at least it makes
* clear what all the various options actually do. Alternative suggestions
* that don't require user to have intimate knowledge of the chip welcomed.
@ -190,7 +172,6 @@ struct max1363_chip_info {
struct attribute_group *scan_attrs;
};
/**
* struct max1363_state - driver instance specific data
* @indio_dev: the industrial I/O device
@ -203,12 +184,20 @@ struct max1363_chip_info {
* @poll_work: bottom half of polling interrupt handler
* @protect_ring: used to ensure only one polling bh running at a time
* @reg: supply regulator
* @monitor_on: whether monitor mode is enabled
* @monitor_speed: parameter corresponding to device monitor speed setting
* @mask_high: bitmask for enabled high thresholds
* @mask_low: bitmask for enabled low thresholds
* @thresh_high: high threshold values
* @thresh_low: low threshold values
* @last_timestamp: timestamp of last event interrupt
* @thresh_work: bh work structure for event handling
*/
struct max1363_state {
struct iio_dev *indio_dev;
struct i2c_client *client;
char setupbyte;
char configbyte;
u8 setupbyte;
u8 configbyte;
const struct max1363_chip_info *chip_info;
const struct max1363_mode *current_mode;
u32 requestedmask;
@ -216,6 +205,18 @@ struct max1363_state {
atomic_t protect_ring;
struct iio_trigger *trig;
struct regulator *reg;
/* Using monitor modes and buffer at the same time is
currently not supported */
bool monitor_on;
unsigned int monitor_speed:3;
u8 mask_high;
u8 mask_low;
/* 4x unipolar first then the fours bipolar ones */
s16 thresh_high[8];
s16 thresh_low[8];
s64 last_timestamp;
struct work_struct thresh_work;
};
const struct max1363_mode

696
drivers/staging/iio/adc/max1363_core.c
View File

@ -18,7 +18,6 @@
*
* Not currently implemented.
*
* - Monitor interrrupt generation.
* - Control of internal reference.
*/
@ -205,6 +204,16 @@ static ssize_t max1363_read_single_channel(struct device *dev,
long mask;
mutex_lock(&dev_info->mlock);
/*
* If monitor mode is enabled, the method for reading a single
* channel will have to be rather different and has not yet
* been implemented.
*/
if (st->monitor_on) {
ret = -EBUSY;
goto error_ret;
}
/* If ring buffer capture is occuring, query the buffer */
if (iio_ring_enabled(dev_info)) {
mask = max1363_mode_table[this_attr->address].modemask;
@ -897,6 +906,668 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
}
};
static const int max1363_monitor_speeds[] = { 133000, 665000, 33300, 16600,
8300, 4200, 2000, 1000 };
static ssize_t max1363_monitor_show_freq(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
return sprintf(buf, "%d\n", max1363_monitor_speeds[st->monitor_speed]);
}
static ssize_t max1363_monitor_store_freq(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
int i, ret;
unsigned long val;
bool found = false;
ret = strict_strtoul(buf, 10, &val);
if (ret)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(max1363_monitor_speeds); i++)
if (val == max1363_monitor_speeds[i]) {
found = true;
break;
}
if (!found)
return -EINVAL;
mutex_lock(&dev_info->mlock);
st->monitor_speed = i;
mutex_unlock(&dev_info->mlock);
return 0;
}
static IIO_DEV_ATTR_SAMP_FREQ(S_IRUGO | S_IWUSR,
max1363_monitor_show_freq,
max1363_monitor_store_freq);
static IIO_CONST_ATTR(sampling_frequency_available,
"133000 665000 33300 16600 8300 4200 2000 1000");
static ssize_t max1363_show_thresh(struct device *dev,
struct device_attribute *attr,
char *buf,
bool high)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
if (high)
return sprintf(buf, "%d\n",
st->thresh_high[this_attr->address]);
else
return sprintf(buf, "%d\n",
st->thresh_low[this_attr->address & 0x7]);
}
static ssize_t max1363_show_thresh_low(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return max1363_show_thresh(dev, attr, buf, false);
}
static ssize_t max1363_show_thresh_high(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return max1363_show_thresh(dev, attr, buf, true);
}
static ssize_t max1363_store_thresh_unsigned(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len,
bool high)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
unsigned long val;
int ret;
ret = strict_strtoul(buf, 10, &val);
if (ret)
return -EINVAL;
switch (st->chip_info->bits) {
case 10:
if (val > 0x3FF)
return -EINVAL;
break;
case 12:
if (val > 0xFFF)
return -EINVAL;
break;
}
switch (high) {
case 1:
st->thresh_high[this_attr->address] = val;
break;
case 0:
st->thresh_low[this_attr->address & 0x7] = val;
break;
}
return len;
}
static ssize_t max1363_store_thresh_high_unsigned(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return max1363_store_thresh_unsigned(dev, attr, buf, len, true);
}
static ssize_t max1363_store_thresh_low_unsigned(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return max1363_store_thresh_unsigned(dev, attr, buf, len, false);
}
static ssize_t max1363_store_thresh_signed(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len,
bool high)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
long val;
int ret;
ret = strict_strtol(buf, 10, &val);
if (ret)
return -EINVAL;
switch (st->chip_info->bits) {
case 10:
if (val < -512 || val > 511)
return -EINVAL;
break;
case 12:
if (val < -2048 || val > 2047)
return -EINVAL;
break;
}
switch (high) {
case 1:
st->thresh_high[this_attr->address] = val;
break;
case 0:
st->thresh_low[this_attr->address & 0x7] = val;
break;
}
return len;
}
static ssize_t max1363_store_thresh_high_signed(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return max1363_store_thresh_signed(dev, attr, buf, len, true);
}
static ssize_t max1363_store_thresh_low_signed(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return max1363_store_thresh_signed(dev, attr, buf, len, false);
}
static IIO_DEVICE_ATTR(in0_thresh_high_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_high,
max1363_store_thresh_high_unsigned, 0);
static IIO_DEVICE_ATTR(in0_thresh_low_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_low,
max1363_store_thresh_low_unsigned, 0);
static IIO_DEVICE_ATTR(in1_thresh_high_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_high,
max1363_store_thresh_high_unsigned, 1);
static IIO_DEVICE_ATTR(in1_thresh_low_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_low,
max1363_store_thresh_low_unsigned, 1);
static IIO_DEVICE_ATTR(in2_thresh_high_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_high,
max1363_store_thresh_high_unsigned, 2);
static IIO_DEVICE_ATTR(in2_thresh_low_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_low,
max1363_store_thresh_low_unsigned, 2);
static IIO_DEVICE_ATTR(in3_thresh_high_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_high,
max1363_store_thresh_high_unsigned, 3);
static IIO_DEVICE_ATTR(in3_thresh_low_value, S_IRUGO | S_IWUSR,
max1363_show_thresh_low,
max1363_store_thresh_low_unsigned, 3);
static IIO_DEVICE_ATTR_NAMED(in0min1_thresh_high_value,
in0-in1_thresh_high_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_high,
max1363_store_thresh_high_signed, 4);
static IIO_DEVICE_ATTR_NAMED(in0min1_thresh_low_value,
in0-in1_thresh_low_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_low,
max1363_store_thresh_low_signed, 4);
static IIO_DEVICE_ATTR_NAMED(in2min3_thresh_high_value,
in2-in3_thresh_high_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_high,
max1363_store_thresh_high_signed, 5);
static IIO_DEVICE_ATTR_NAMED(in2min3_thresh_low_value,
in2-in3_thresh_low_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_low,
max1363_store_thresh_low_signed, 5);
static IIO_DEVICE_ATTR_NAMED(in1min0_thresh_high_value,
in1-in0_thresh_high_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_high,
max1363_store_thresh_high_signed, 6);
static IIO_DEVICE_ATTR_NAMED(in1min0_thresh_low_value,
in1-in0_thresh_low_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_low,
max1363_store_thresh_low_signed, 6);
static IIO_DEVICE_ATTR_NAMED(in3min2_thresh_high_value,
in3-in2_thresh_high_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_high,
max1363_store_thresh_high_signed, 7);
static IIO_DEVICE_ATTR_NAMED(in3min2_thresh_low_value,
in3-in2_thresh_low_value,
S_IRUGO | S_IWUSR, max1363_show_thresh_low,
max1363_store_thresh_low_signed, 7);
static int max1363_int_th(struct iio_dev *dev_info,
int index,
s64 timestamp,
int not_test)
{
struct max1363_state *st = dev_info->dev_data;
st->last_timestamp = timestamp;
schedule_work(&st->thresh_work);
return 0;
}
static void max1363_thresh_handler_bh(struct work_struct *work_s)
{
struct max1363_state *st = container_of(work_s, struct max1363_state,
thresh_work);
u8 rx;
u8 tx[2] = { st->setupbyte,
MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0 };
i2c_master_recv(st->client, &rx, 1);
if (rx & (1 << 0))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_LOW_THRESH(3),
st->last_timestamp);
if (rx & (1 << 1))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_HIGH_THRESH(3),
st->last_timestamp);
if (rx & (1 << 2))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_LOW_THRESH(2),
st->last_timestamp);
if (rx & (1 << 3))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_HIGH_THRESH(2),
st->last_timestamp);
if (rx & (1 << 4))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_LOW_THRESH(1),
st->last_timestamp);
if (rx & (1 << 5))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_HIGH_THRESH(1),
st->last_timestamp);
if (rx & (1 << 6))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_LOW_THRESH(0),
st->last_timestamp);
if (rx & (1 << 7))
iio_push_event(st->indio_dev, 0,
IIO_EVENT_CODE_IN_HIGH_THRESH(0),
st->last_timestamp);
enable_irq(st->client->irq);
i2c_master_send(st->client, tx, 2);
}
static ssize_t max1363_read_interrupt_config(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
struct iio_event_attr *this_attr = to_iio_event_attr(attr);
int val;
mutex_lock(&dev_info->mlock);
if (this_attr->mask & 0x8)
val = (1 << (this_attr->mask & 0x7)) & st->mask_low;
else
val = (1 << this_attr->mask) & st->mask_high;
mutex_unlock(&dev_info->mlock);
return sprintf(buf, "%d\n", !!val);
}
static int max1363_monitor_mode_update(struct max1363_state *st, int enabled)
{
u8 *tx_buf;
int ret, i = 3, j;
unsigned long numelements;
int len;
long modemask;
if (!enabled) {
/* transition to ring capture is not currently supported */
st->setupbyte &= ~MAX1363_SETUP_MONITOR_SETUP;
st->configbyte &= ~MAX1363_SCAN_MASK;
st->monitor_on = false;
return max1363_write_basic_config(st->client,
st->setupbyte,
st->configbyte);
}
/* Ensure we are in the relevant mode */
st->setupbyte |= MAX1363_SETUP_MONITOR_SETUP;
st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK
| MAX1363_SCAN_MASK
| MAX1363_SE_DE_MASK);
st->configbyte |= MAX1363_CONFIG_SCAN_MONITOR_MODE;
if ((st->mask_low | st->mask_high) & 0x0F) {
st->configbyte |= max1363_mode_table[s0to3].conf;
modemask = max1363_mode_table[s0to3].modemask;
} else if ((st->mask_low | st->mask_high) & 0x30) {
st->configbyte |= max1363_mode_table[d0m1to2m3].conf;
modemask = max1363_mode_table[d0m1to2m3].modemask;
} else {
st->configbyte |= max1363_mode_table[d1m0to3m2].conf;
modemask = max1363_mode_table[d1m0to3m2].modemask;
}
numelements = hweight_long(modemask);
len = 3 * numelements + 3;
tx_buf = kmalloc(len, GFP_KERNEL);
if (!tx_buf) {
ret = -ENOMEM;
goto error_ret;
}
tx_buf[0] = st->configbyte;
tx_buf[1] = st->setupbyte;
tx_buf[2] = (st->monitor_speed << 1);
/*
* So we need to do yet another bit of nefarious scan mode
* setup to match what we need.
*/
for (j = 0; j < 8; j++)
if (modemask & (1 << j)) {
/* Establish the mode is in the scan */
if (st->mask_low & (1 << j)) {
tx_buf[i] = (st->thresh_low[j] >> 4) & 0xFF;
tx_buf[i + 1] = (st->thresh_low[j] << 4) & 0xF0;
} else if (j < 4) {
tx_buf[i] = 0;
tx_buf[i + 1] = 0;
} else {
tx_buf[i] = 0x80;
tx_buf[i + 1] = 0;
}
if (st->mask_high & (1 << j)) {
tx_buf[i + 1] |=
(st->thresh_high[j] >> 8) & 0x0F;
tx_buf[i + 2] = st->thresh_high[j] & 0xFF;
} else if (j < 4) {
tx_buf[i + 1] |= 0x0F;
tx_buf[i + 2] = 0xFF;
} else {
tx_buf[i + 1] |= 0x07;
tx_buf[i + 2] = 0xFF;
}
i += 3;
}
ret = i2c_master_send(st->client, tx_buf, len);
if (ret < 0)
goto error_ret;
if (ret != len) {
ret = -EIO;
goto error_ret;
}
/*
* Now that we hopefully have sensible thresholds in place it is
* time to turn the interrupts on.
* It is unclear from the data sheet if this should be necessary
* (i.e. whether monitor mode setup is atomic) but it appears to
* be in practice.
*/
tx_buf[0] = st->setupbyte;
tx_buf[1] = MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0;
ret = i2c_master_send(st->client, tx_buf, 2);
if (ret < 0)
goto error_ret;
if (ret != 2) {
ret = -EIO;
goto error_ret;
}
ret = 0;
st->monitor_on = true;
error_ret:
kfree(tx_buf);
return ret;
}
/*
* To keep this managable we always use one of 3 scan modes.
* Scan 0...3, 0-1,2-3 and 1-0,3-2
*/
static inline int __max1363_check_event_mask(int thismask, int checkmask)
{
int ret = 0;
/* Is it unipolar */
if (thismask < 4) {
if (checkmask & ~0x0F) {
ret = -EBUSY;
goto error_ret;
}
} else if (thismask < 6) {
if (checkmask & ~0x30) {
ret = -EBUSY;
goto error_ret;
}
} else if (checkmask & ~0xC0)
ret = -EBUSY;
error_ret:
return ret;
}
static ssize_t max1363_write_interrupt_config(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct max1363_state *st = iio_dev_get_devdata(dev_info);
struct iio_event_attr *this_attr = to_iio_event_attr(attr);
unsigned long val;
int ret;
u16 unifiedmask;
ret = strict_strtoul(buf, 10, &val);
if (ret)
return -EINVAL;
mutex_lock(&st->indio_dev->mlock);
unifiedmask = st->mask_low | st->mask_high;
if (this_attr->mask & 0x08) {
/* If we are disabling no need to test */
if (val == 0)
st->mask_low &= ~(1 << (this_attr->mask & 0x7));
else {
ret = __max1363_check_event_mask(this_attr->mask & 0x7,
unifiedmask);
if (ret)
goto error_ret;
st->mask_low |= (1 << (this_attr->mask & 0x7));
}
} else {
if (val == 0)
st->mask_high &= ~(1 << (this_attr->mask));
else {
ret = __max1363_check_event_mask(this_attr->mask,
unifiedmask);
if (ret)
goto error_ret;
st->mask_high |= (1 << this_attr->mask);
}
}
if (st->monitor_on && !st->mask_high && !st->mask_low)
iio_remove_event_from_list(this_attr->listel,
&dev_info->interrupts[0]->ev_list);
if (!st->monitor_on && val)
iio_add_event_to_list(this_attr->listel,
&dev_info->interrupts[0]->ev_list);
max1363_monitor_mode_update(st, !!(st->mask_high | st->mask_low));
error_ret:
mutex_unlock(&st->indio_dev->mlock);
return len;
}
IIO_EVENT_SH(max1363_thresh, max1363_int_th);
#define MAX1363_HIGH_THRESH(a) a
#define MAX1363_LOW_THRESH(a) (a | 0x8)
IIO_EVENT_ATTR_SH(in0_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(0));
IIO_EVENT_ATTR_SH(in0_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(0));
IIO_EVENT_ATTR_SH(in1_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(1));
IIO_EVENT_ATTR_SH(in1_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(1));
IIO_EVENT_ATTR_SH(in2_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(2));
IIO_EVENT_ATTR_SH(in2_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(2));
IIO_EVENT_ATTR_SH(in3_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(3));
IIO_EVENT_ATTR_SH(in3_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(3));
IIO_EVENT_ATTR_NAMED_SH(in0min1_thresh_high_en,
in0-in1_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(4));
IIO_EVENT_ATTR_NAMED_SH(in0min1_thresh_low_en,
in0-in1_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(4));
IIO_EVENT_ATTR_NAMED_SH(in3min2_thresh_high_en,
in3-in2_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(5));
IIO_EVENT_ATTR_NAMED_SH(in3min2_thresh_low_en,
in3-in2_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(5));
IIO_EVENT_ATTR_NAMED_SH(in1min0_thresh_high_en,
in1-in0_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(6));
IIO_EVENT_ATTR_NAMED_SH(in1min0_thresh_low_en,
in1-in0_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(6));
IIO_EVENT_ATTR_NAMED_SH(in2min3_thresh_high_en,
in2-in3_thresh_high_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_HIGH_THRESH(7));
IIO_EVENT_ATTR_NAMED_SH(in2min3_thresh_low_en,
in2-in3_thresh_low_en,
iio_event_max1363_thresh,
max1363_read_interrupt_config,
max1363_write_interrupt_config,
MAX1363_LOW_THRESH(7));
/*
* As with scan_elements, only certain sets of these can
* be combined.
*/
static struct attribute *max1363_event_attributes[] = {
&iio_dev_attr_in0_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in0_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in1_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in1_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in2_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in2_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in3_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in3_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in0min1_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in0min1_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in2min3_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in2min3_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in1min0_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in1min0_thresh_low_value.dev_attr.attr,
&iio_dev_attr_in3min2_thresh_high_value.dev_attr.attr,
&iio_dev_attr_in3min2_thresh_low_value.dev_attr.attr,
&iio_dev_attr_sampling_frequency.dev_attr.attr,
&iio_const_attr_sampling_frequency_available.dev_attr.attr,
&iio_event_attr_in0_thresh_high_en.dev_attr.attr,
&iio_event_attr_in0_thresh_low_en.dev_attr.attr,
&iio_event_attr_in1_thresh_high_en.dev_attr.attr,
&iio_event_attr_in1_thresh_low_en.dev_attr.attr,
&iio_event_attr_in2_thresh_high_en.dev_attr.attr,
&iio_event_attr_in2_thresh_low_en.dev_attr.attr,
&iio_event_attr_in3_thresh_high_en.dev_attr.attr,
&iio_event_attr_in3_thresh_low_en.dev_attr.attr,
&iio_event_attr_in0min1_thresh_high_en.dev_attr.attr,
&iio_event_attr_in0min1_thresh_low_en.dev_attr.attr,
&iio_event_attr_in3min2_thresh_high_en.dev_attr.attr,
&iio_event_attr_in3min2_thresh_low_en.dev_attr.attr,
&iio_event_attr_in1min0_thresh_high_en.dev_attr.attr,
&iio_event_attr_in1min0_thresh_low_en.dev_attr.attr,
&iio_event_attr_in2min3_thresh_high_en.dev_attr.attr,
&iio_event_attr_in2min3_thresh_low_en.dev_attr.attr,
NULL,
};
static struct attribute_group max1363_event_attribute_group = {
.attrs = max1363_event_attributes,
};
static int max1363_initial_setup(struct max1363_state *st)
{
st->setupbyte = MAX1363_SETUP_AIN3_IS_AIN3_REF_IS_VDD
@ -964,6 +1635,11 @@ static int __devinit max1363_probe(struct i2c_client *client,
st->indio_dev->dev_data = (void *)(st);
st->indio_dev->driver_module = THIS_MODULE;
st->indio_dev->modes = INDIO_DIRECT_MODE;
if (st->chip_info->monitor_mode && client->irq) {
st->indio_dev->num_interrupt_lines = 1;
st->indio_dev->event_attrs
= &max1363_event_attribute_group;
}
ret = max1363_initial_setup(st);
if (ret)
@ -980,7 +1656,22 @@ static int __devinit max1363_probe(struct i2c_client *client,
ret = max1363_initialize_ring(st->indio_dev->ring);
if (ret)
goto error_cleanup_ring;
if (st->chip_info->monitor_mode && client->irq) {
ret = iio_register_interrupt_line(client->irq,
st->indio_dev,
0,
IRQF_TRIGGER_RISING,
client->name);
if (ret)
goto error_uninit_ring;
INIT_WORK(&st->thresh_work, max1363_thresh_handler_bh);
}
return 0;
error_uninit_ring:
max1363_uninitialize_ring(st->indio_dev->ring);
error_cleanup_ring:
max1363_ring_cleanup(st->indio_dev);
error_free_available_scan_masks:
@ -1006,6 +1697,9 @@ static int max1363_remove(struct i2c_client *client)
{
struct max1363_state *st = i2c_get_clientdata(client);
struct iio_dev *indio_dev = st->indio_dev;
if (st->chip_info->monitor_mode && client->irq)
iio_unregister_interrupt_line(st->indio_dev, 0);
max1363_uninitialize_ring(indio_dev->ring);
max1363_ring_cleanup(indio_dev);
kfree(st->indio_dev->available_scan_masks);