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yaml
---
r: 249786
b: refs/heads/master
c: 9c6b6ba
h: refs/heads/master
v: v3
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Jonathan Cameron authored and Greg Kroah-Hartman committed May 19, 2011
1 parent e51bc71 commit c9d1358
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Showing 2 changed files with 62 additions and 91 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 58c0323c947b7cb48b280fea4394483817315b0d
refs/heads/master: 9c6b6ba819236ae098248d72f95235f286974b21
151 changes: 61 additions & 90 deletions trunk/drivers/staging/iio/adc/adt7410.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7,15 +7,12 @@
*/

#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/workqueue.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
#include <linux/i2c.h>
#include <linux/rtc.h>

#include "../iio.h"
#include "../sysfs.h"
Expand Down Expand Up @@ -80,8 +77,6 @@ struct adt7410_chip_info {
const char *name;
struct i2c_client *client;
struct iio_dev *indio_dev;
struct work_struct thresh_work;
s64 last_timestamp;
u8 config;
};

Expand Down Expand Up @@ -381,47 +376,32 @@ static const struct attribute_group adt7410_attribute_group = {
#define IIO_EVENT_CODE_ADT7410_BELLOW_ALARM IIO_BUFFER_EVENT_CODE(1)
#define IIO_EVENT_CODE_ADT7410_ABOVE_CRIT IIO_BUFFER_EVENT_CODE(2)

static void adt7410_interrupt_bh(struct work_struct *work_s)
static irqreturn_t adt7410_event_handler(int irq, void *private)
{
struct adt7410_chip_info *chip =
container_of(work_s, struct adt7410_chip_info, thresh_work);
struct iio_dev *indio_dev = private;
struct adt7410_chip_info *chip = iio_dev_get_devdata(indio_dev);
s64 timestamp = iio_get_time_ns();
u8 status;

if (adt7410_i2c_read_byte(chip, ADT7410_STATUS, &status))
return;

enable_irq(chip->client->irq);
return IRQ_HANDLED;

if (status & ADT7410_STAT_T_HIGH)
iio_push_event(chip->indio_dev, 0,
iio_push_event(indio_dev, 0,
IIO_EVENT_CODE_ADT7410_ABOVE_ALARM,
chip->last_timestamp);
timestamp);
if (status & ADT7410_STAT_T_LOW)
iio_push_event(chip->indio_dev, 0,
iio_push_event(indio_dev, 0,
IIO_EVENT_CODE_ADT7410_BELLOW_ALARM,
chip->last_timestamp);
timestamp);
if (status & ADT7410_STAT_T_CRIT)
iio_push_event(chip->indio_dev, 0,
iio_push_event(indio_dev, 0,
IIO_EVENT_CODE_ADT7410_ABOVE_CRIT,
chip->last_timestamp);
}

static int adt7410_interrupt(struct iio_dev *dev_info,
int index,
s64 timestamp,
int no_test)
{
struct adt7410_chip_info *chip = dev_info->dev_data;

chip->last_timestamp = timestamp;
schedule_work(&chip->thresh_work);
timestamp);

return 0;
return IRQ_HANDLED;
}

IIO_EVENT_SH(adt7410, &adt7410_interrupt);
IIO_EVENT_SH(adt7410_ct, &adt7410_interrupt);

static ssize_t adt7410_show_event_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
Expand Down Expand Up @@ -699,45 +679,51 @@ static inline ssize_t adt7410_set_t_hyst(struct device *dev,
return ret;
}

IIO_EVENT_ATTR_SH(event_mode, iio_event_adt7410,
adt7410_show_event_mode, adt7410_set_event_mode, 0);
IIO_EVENT_ATTR_SH(available_event_modes, iio_event_adt7410,
adt7410_show_available_event_modes, NULL, 0);
IIO_EVENT_ATTR_SH(fault_queue, iio_event_adt7410,
adt7410_show_fault_queue, adt7410_set_fault_queue, 0);
IIO_EVENT_ATTR_SH(t_alarm_high, iio_event_adt7410,
adt7410_show_t_alarm_high, adt7410_set_t_alarm_high, 0);
IIO_EVENT_ATTR_SH(t_alarm_low, iio_event_adt7410,
adt7410_show_t_alarm_low, adt7410_set_t_alarm_low, 0);
IIO_EVENT_ATTR_SH(t_crit, iio_event_adt7410_ct,
adt7410_show_t_crit, adt7410_set_t_crit, 0);
IIO_EVENT_ATTR_SH(t_hyst, iio_event_adt7410,
adt7410_show_t_hyst, adt7410_set_t_hyst, 0);
static IIO_DEVICE_ATTR(event_mode,
S_IRUGO | S_IWUSR,
adt7410_show_event_mode, adt7410_set_event_mode, 0);
static IIO_DEVICE_ATTR(available_event_modes,
S_IRUGO,
adt7410_show_available_event_modes, NULL, 0);
static IIO_DEVICE_ATTR(fault_queue,
S_IRUGO | S_IWUSR,
adt7410_show_fault_queue, adt7410_set_fault_queue, 0);
static IIO_DEVICE_ATTR(t_alarm_high,
S_IRUGO | S_IWUSR,
adt7410_show_t_alarm_high, adt7410_set_t_alarm_high, 0);
static IIO_DEVICE_ATTR(t_alarm_low,
S_IRUGO | S_IWUSR,
adt7410_show_t_alarm_low, adt7410_set_t_alarm_low, 0);
static IIO_DEVICE_ATTR(t_crit,
S_IRUGO | S_IWUSR,
adt7410_show_t_crit, adt7410_set_t_crit, 0);
static IIO_DEVICE_ATTR(t_hyst,
S_IRUGO | S_IWUSR,
adt7410_show_t_hyst, adt7410_set_t_hyst, 0);

static struct attribute *adt7410_event_int_attributes[] = {
&iio_event_attr_event_mode.dev_attr.attr,
&iio_event_attr_available_event_modes.dev_attr.attr,
&iio_event_attr_fault_queue.dev_attr.attr,
&iio_event_attr_t_alarm_high.dev_attr.attr,
&iio_event_attr_t_alarm_low.dev_attr.attr,
&iio_event_attr_t_hyst.dev_attr.attr,
&iio_dev_attr_event_mode.dev_attr.attr,
&iio_dev_attr_available_event_modes.dev_attr.attr,
&iio_dev_attr_fault_queue.dev_attr.attr,
&iio_dev_attr_t_alarm_high.dev_attr.attr,
&iio_dev_attr_t_alarm_low.dev_attr.attr,
&iio_dev_attr_t_hyst.dev_attr.attr,
NULL,
};

static struct attribute *adt7410_event_ct_attributes[] = {
&iio_event_attr_event_mode.dev_attr.attr,
&iio_event_attr_available_event_modes.dev_attr.attr,
&iio_event_attr_fault_queue.dev_attr.attr,
&iio_event_attr_t_crit.dev_attr.attr,
&iio_event_attr_t_hyst.dev_attr.attr,
&iio_dev_attr_event_mode.dev_attr.attr,
&iio_dev_attr_available_event_modes.dev_attr.attr,
&iio_dev_attr_fault_queue.dev_attr.attr,
&iio_dev_attr_t_crit.dev_attr.attr,
&iio_dev_attr_t_hyst.dev_attr.attr,
NULL,
};

static struct attribute_group adt7410_event_attribute_group[ADT7410_IRQS] = {
{
.attrs = adt7410_event_int_attributes,
},
{
}, {
.attrs = adt7410_event_ct_attributes,
}
};
Expand Down Expand Up @@ -784,44 +770,29 @@ static int __devinit adt7410_probe(struct i2c_client *client,

/* CT critcal temperature event. line 0 */
if (client->irq) {
ret = iio_register_interrupt_line(client->irq,
chip->indio_dev,
0,
IRQF_TRIGGER_LOW,
chip->name);
ret = request_threaded_irq(client->irq,
NULL,
&adt7410_event_handler,
IRQF_TRIGGER_LOW,
chip->name,
chip->indio_dev);
if (ret)
goto error_unreg_dev;

/*
* The event handler list element refer to iio_event_adt7410.
* All event attributes bind to the same event handler.
* One event handler can only be added to one event list.
*/
iio_add_event_to_list(&iio_event_adt7410,
&chip->indio_dev->interrupts[0]->ev_list);
}

/* INT bound temperature alarm event. line 1 */
if (adt7410_platform_data[0]) {
ret = iio_register_interrupt_line(adt7410_platform_data[0],
chip->indio_dev,
1,
adt7410_platform_data[1],
chip->name);
ret = request_threaded_irq(adt7410_platform_data[0],
NULL,
&adt7410_event_handler,
adt7410_platform_data[1],
chip->name,
chip->indio_dev);
if (ret)
goto error_unreg_ct_irq;

/*
* The event handler list element refer to iio_event_adt7410.
* All event attributes bind to the same event handler.
* One event handler can only be added to one event list.
*/
iio_add_event_to_list(&iio_event_adt7410_ct,
&chip->indio_dev->interrupts[1]->ev_list);
}

if (client->irq && adt7410_platform_data[0]) {
INIT_WORK(&chip->thresh_work, adt7410_interrupt_bh);

ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret) {
Expand Down Expand Up @@ -850,9 +821,9 @@ static int __devinit adt7410_probe(struct i2c_client *client,
return 0;

error_unreg_int_irq:
iio_unregister_interrupt_line(chip->indio_dev, 1);
free_irq(adt7410_platform_data[0], chip->indio_dev);
error_unreg_ct_irq:
iio_unregister_interrupt_line(chip->indio_dev, 0);
free_irq(client->irq, chip->indio_dev);
error_unreg_dev:
iio_device_unregister(chip->indio_dev);
error_free_dev:
Expand All @@ -870,9 +841,9 @@ static int __devexit adt7410_remove(struct i2c_client *client)
unsigned long *adt7410_platform_data = client->dev.platform_data;

if (adt7410_platform_data[0])
iio_unregister_interrupt_line(indio_dev, 1);
free_irq(adt7410_platform_data[0], chip->indio_dev);
if (client->irq)
iio_unregister_interrupt_line(indio_dev, 0);
free_irq(client->irq, chip->indio_dev);
iio_device_unregister(indio_dev);
iio_free_device(chip->indio_dev);
kfree(chip);
Expand Down

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