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Subject[PATCH 3/3] staging: iio: tsl2x7x: migrate *_thresh_period sysfs attributes to iio_event_spec
Date
The sysfs attributes in_intensity0_thresh_period and
in_proximity0_thresh_period are currently directly created by the driver.
This patch migrates the creation of these sysfs attributes from the driver
to using the IIO core via iio_event_spec.

Signed-off-by: Brian Masney <masneyb@onstation.org>
---
drivers/staging/iio/light/tsl2x7x.c | 196 ++++++++++--------------------------
1 file changed, 52 insertions(+), 144 deletions(-)

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index e6a71f5fc9cb..be2806593e59 100644
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -932,108 +932,6 @@ static ssize_t in_illuminance0_target_input_store(struct device *dev,
return len;
}

-/* persistence settings */
-static ssize_t in_intensity0_thresh_period_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
- int y, z, filter_delay;
-
- /* Determine integration time */
- y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->settings.als_time) + 1;
- z = y * TSL2X7X_MIN_ITIME;
- filter_delay = z * (chip->settings.persistence & 0x0F);
- y = filter_delay / 1000;
- z = filter_delay % 1000;
-
- return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
-}
-
-static ssize_t in_intensity0_thresh_period_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- struct tsl2x7x_parse_result result;
- int y, z, filter_delay;
- int ret;
-
- ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
- if (ret)
- return ret;
-
- y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->settings.als_time) + 1;
- z = y * TSL2X7X_MIN_ITIME;
-
- filter_delay =
- DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
-
- chip->settings.persistence &= 0xF0;
- chip->settings.persistence |= (filter_delay & 0x0F);
-
- dev_info(&chip->client->dev, "%s: als persistence = %d",
- __func__, filter_delay);
-
- ret = tsl2x7x_invoke_change(indio_dev);
- if (ret < 0)
- return ret;
-
- return IIO_VAL_INT_PLUS_MICRO;
-}
-
-static ssize_t in_proximity0_thresh_period_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
- int y, z, filter_delay;
-
- /* Determine integration time */
- y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->settings.prx_time) + 1;
- z = y * TSL2X7X_MIN_ITIME;
- filter_delay = z * ((chip->settings.persistence & 0xF0) >> 4);
- y = filter_delay / 1000;
- z = filter_delay % 1000;
-
- return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
-}
-
-static ssize_t in_proximity0_thresh_period_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- struct tsl2x7x_parse_result result;
- int y, z, filter_delay;
- int ret;
-
- ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
- if (ret)
- return ret;
-
- y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->settings.prx_time) + 1;
- z = y * TSL2X7X_MIN_ITIME;
-
- filter_delay =
- DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
-
- chip->settings.persistence &= 0x0F;
- chip->settings.persistence |= ((filter_delay << 4) & 0xF0);
-
- dev_info(&chip->client->dev, "%s: prox persistence = %d",
- __func__, filter_delay);
-
- ret = tsl2x7x_invoke_change(indio_dev);
- if (ret < 0)
- return ret;
-
-
- return IIO_VAL_INT_PLUS_MICRO;
-}
-
static ssize_t in_illuminance0_calibrate_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
@@ -1198,7 +1096,8 @@ static int tsl2x7x_write_event_value(struct iio_dev *indio_dev,
int val, int val2)
{
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- int ret = -EINVAL;
+ int ret = -EINVAL, y, z, filter_delay;
+ u8 time;

switch (info) {
case IIO_EV_INFO_VALUE:
@@ -1230,6 +1129,33 @@ static int tsl2x7x_write_event_value(struct iio_dev *indio_dev,
}
}
break;
+ case IIO_EV_INFO_PERIOD:
+ if (chan->type == IIO_INTENSITY)
+ time = chip->settings.als_time;
+ else
+ time = chip->settings.prx_time;
+
+ y = (TSL2X7X_MAX_TIMER_CNT - time) + 1;
+ z = y * TSL2X7X_MIN_ITIME;
+
+ filter_delay = DIV_ROUND_UP((val * 1000) + val2, z);
+
+ if (chan->type == IIO_INTENSITY) {
+ chip->settings.persistence &= 0xF0;
+ chip->settings.persistence |=
+ (filter_delay & 0x0F);
+ dev_info(&chip->client->dev, "%s: ALS persistence = %d",
+ __func__, filter_delay);
+ } else {
+ chip->settings.persistence &= 0x0F;
+ chip->settings.persistence |=
+ ((filter_delay << 4) & 0xF0);
+ dev_info(&chip->client->dev,
+ "%s: Proximity persistence = %d",
+ __func__, filter_delay);
+ }
+ ret = 0;
+ break;
default:
break;
}
@@ -1248,7 +1174,8 @@ static int tsl2x7x_read_event_value(struct iio_dev *indio_dev,
int *val, int *val2)
{
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- int ret = -EINVAL;
+ int ret = -EINVAL, filter_delay, mult;
+ u8 time;

switch (info) {
case IIO_EV_INFO_VALUE:
@@ -1280,6 +1207,23 @@ static int tsl2x7x_read_event_value(struct iio_dev *indio_dev,
}
}
break;
+ case IIO_EV_INFO_PERIOD:
+ if (chan->type == IIO_INTENSITY) {
+ time = chip->settings.als_time;
+ mult = chip->settings.persistence & 0x0F;
+ } else {
+ time = chip->settings.prx_time;
+ mult = (chip->settings.persistence & 0xF0) >> 4;
+ }
+
+ /* Determine integration time */
+ *val = (TSL2X7X_MAX_TIMER_CNT - time) + 1;
+ *val2 = *val * TSL2X7X_MIN_ITIME;
+ filter_delay = *val2 * mult;
+ *val = filter_delay / 1000;
+ *val2 = filter_delay % 1000;
+ ret = IIO_VAL_INT_PLUS_MICRO;
+ break;
default:
break;
}
@@ -1444,10 +1388,6 @@ static DEVICE_ATTR_WO(in_proximity0_calibrate);

static DEVICE_ATTR_RW(in_illuminance0_lux_table);

-static DEVICE_ATTR_RW(in_intensity0_thresh_period);
-
-static DEVICE_ATTR_RW(in_proximity0_thresh_period);
-
/* Use the default register values to identify the Taos device */
static int tsl2x7x_device_id(int *id, int target)
{
@@ -1554,22 +1494,6 @@ static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
NULL
};

-static struct attribute *tsl2X7X_ALS_event_attrs[] = {
- &dev_attr_in_intensity0_thresh_period.attr,
- NULL,
-};
-
-static struct attribute *tsl2X7X_PRX_event_attrs[] = {
- &dev_attr_in_proximity0_thresh_period.attr,
- NULL,
-};
-
-static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
- &dev_attr_in_intensity0_thresh_period.attr,
- &dev_attr_in_proximity0_thresh_period.attr,
- NULL,
-};
-
static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
[ALS] = {
.attrs = tsl2x7x_ALS_device_attrs,
@@ -1588,25 +1512,9 @@ static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
},
};

-static const struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
- [ALS] = {
- .attrs = tsl2X7X_ALS_event_attrs,
- .name = "events",
- },
- [PRX] = {
- .attrs = tsl2X7X_PRX_event_attrs,
- .name = "events",
- },
- [ALSPRX] = {
- .attrs = tsl2X7X_ALSPRX_event_attrs,
- .name = "events",
- },
-};
-
static const struct iio_info tsl2X7X_device_info[] = {
[ALS] = {
.attrs = &tsl2X7X_device_attr_group_tbl[ALS],
- .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS],
.read_raw = &tsl2x7x_read_raw,
.write_raw = &tsl2x7x_write_raw,
.read_event_value = &tsl2x7x_read_event_value,
@@ -1616,7 +1524,6 @@ static const struct iio_info tsl2X7X_device_info[] = {
},
[PRX] = {
.attrs = &tsl2X7X_device_attr_group_tbl[PRX],
- .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
.read_raw = &tsl2x7x_read_raw,
.write_raw = &tsl2x7x_write_raw,
.read_event_value = &tsl2x7x_read_event_value,
@@ -1626,7 +1533,6 @@ static const struct iio_info tsl2X7X_device_info[] = {
},
[ALSPRX] = {
.attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX],
- .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
.read_raw = &tsl2x7x_read_raw,
.write_raw = &tsl2x7x_write_raw,
.read_event_value = &tsl2x7x_read_event_value,
@@ -1636,7 +1542,6 @@ static const struct iio_info tsl2X7X_device_info[] = {
},
[PRX2] = {
.attrs = &tsl2X7X_device_attr_group_tbl[PRX2],
- .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
.read_raw = &tsl2x7x_read_raw,
.write_raw = &tsl2x7x_write_raw,
.read_event_value = &tsl2x7x_read_event_value,
@@ -1646,7 +1551,6 @@ static const struct iio_info tsl2X7X_device_info[] = {
},
[ALSPRX2] = {
.attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
- .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
.read_raw = &tsl2x7x_read_raw,
.write_raw = &tsl2x7x_write_raw,
.read_event_value = &tsl2x7x_read_event_value,
@@ -1667,6 +1571,10 @@ static const struct iio_event_spec tsl2x7x_events[] = {
.dir = IIO_EV_DIR_FALLING,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE),
+ }, {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_NONE,
+ .mask_separate = BIT(IIO_EV_INFO_PERIOD),
},
};

--
2.13.5
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