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Subject[PATCH v3 5/9] staging: iio: tsl2x7x: convert to use read_avail
Date
Make the sysfs attributes in_proximity0_calibscale_available, and
in_intensity0_{calibscale,integration_time}_available be created
using info_mask_separate_available on the channel configuration.

The driver assumed that the ALS increment was 2.72 ms, and the upper
range was 696 ms. Some other supported devices use 2.73 ms - 699 ms.
This patch adds support for the multiple ranges.

Signed-off-by: Brian Masney <masneyb@onstation.org>
---
drivers/staging/iio/light/tsl2x7x.c | 93 ++++++++++++++++++++++++++++++-------
1 file changed, 76 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index 51c1a90cb592..2d713d3c7c7b 100644
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -209,9 +209,9 @@ static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = {
};

static const struct tsl2x7x_settings tsl2x7x_default_settings = {
- .als_time = 255, /* 2.73 ms */
+ .als_time = 255, /* 2.72 / 2.73 ms */
.als_gain = 0,
- .prox_time = 255, /* 2.73 ms */
+ .prox_time = 255, /* 2.72 / 2.73 ms */
.prox_gain = 0,
.wait_time = 255,
.als_prox_config = 0,
@@ -245,6 +245,23 @@ static const s16 tsl2x7x_prox_gain[] = {
8
};

+static const int tsl2x7x_int_time_avail[][6] = {
+ [tsl2571] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2671] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tmd2671] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2771] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tmd2771] = { 0, 2720, 0, 2720, 0, 696000 },
+ [tsl2572] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tsl2672] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tmd2672] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tsl2772] = { 0, 2730, 0, 2730, 0, 699000 },
+ [tmd2772] = { 0, 2730, 0, 2730, 0, 699000 },
+};
+
+static int tsl2x7x_int_calibscale_avail[] = { 1, 8, 16, 120 };
+
+static int tsl2x7x_prox_calibscale_avail[] = { 1, 2, 4, 8 };
+
/* Channel variations */
enum {
ALS,
@@ -626,7 +643,7 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev)

/* set chip time scaling and saturation */
als_count = 256 - chip->settings.als_time;
- als_time_us = als_count * 2720;
+ als_time_us = als_count * tsl2x7x_int_time_avail[chip->id][3];
chip->als_saturation = als_count * 768; /* 75% of full scale */
chip->als_gain_time_scale = als_time_us *
tsl2x7x_als_gain[chip->settings.als_gain];
@@ -760,12 +777,33 @@ static int tsl2x7x_prox_cal(struct iio_dev *indio_dev)
return tsl2x7x_invoke_change(indio_dev);
}

-static IIO_CONST_ATTR(in_intensity0_calibscale_available, "1 8 16 120");
+static int tsl2x7x_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long mask)
+{
+ struct tsl2X7X_chip *chip = iio_priv(indio_dev);

-static IIO_CONST_ATTR(in_proximity0_calibscale_available, "1 2 4 8");
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBSCALE:
+ if (chan->type == IIO_INTENSITY) {
+ *length = ARRAY_SIZE(tsl2x7x_int_calibscale_avail);
+ *vals = tsl2x7x_int_calibscale_avail;
+ } else {
+ *length = ARRAY_SIZE(tsl2x7x_prox_calibscale_avail);
+ *vals = tsl2x7x_prox_calibscale_avail;
+ }
+ *type = IIO_VAL_INT;
+ return IIO_AVAIL_LIST;
+ case IIO_CHAN_INFO_INT_TIME:
+ *length = ARRAY_SIZE(tsl2x7x_int_time_avail[chip->id]);
+ *vals = tsl2x7x_int_time_avail[chip->id];
+ *type = IIO_VAL_INT_PLUS_MICRO;
+ return IIO_AVAIL_RANGE;
+ }

-static IIO_CONST_ATTR(in_intensity0_integration_time_available,
- ".00272 - .696");
+ return -EINVAL;
+}

static ssize_t in_illuminance0_target_input_show(struct device *dev,
struct device_attribute *attr,
@@ -1110,7 +1148,8 @@ static int tsl2x7x_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_INT_TIME:
*val = 0;
- *val2 = (256 - chip->settings.als_time) * 2720;
+ *val2 = (256 - chip->settings.als_time) *
+ tsl2x7x_int_time_avail[chip->id][3];
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
@@ -1167,7 +1206,8 @@ static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
chip->settings.als_gain_trim = val;
break;
case IIO_CHAN_INFO_INT_TIME:
- chip->settings.als_time = 256 - (val2 / 2720);
+ chip->settings.als_time = 256 -
+ (val2 / tsl2x7x_int_time_avail[chip->id][3]);
break;
default:
return -EINVAL;
@@ -1248,8 +1288,6 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
}

static struct attribute *tsl2x7x_ALS_device_attrs[] = {
- &iio_const_attr_in_intensity0_calibscale_available.dev_attr.attr,
- &iio_const_attr_in_intensity0_integration_time_available.dev_attr.attr,
&dev_attr_in_illuminance0_target_input.attr,
&dev_attr_in_illuminance0_calibrate.attr,
&dev_attr_in_illuminance0_lux_table.attr,
@@ -1262,8 +1300,6 @@ static struct attribute *tsl2x7x_PRX_device_attrs[] = {
};

static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
- &iio_const_attr_in_intensity0_calibscale_available.dev_attr.attr,
- &iio_const_attr_in_intensity0_integration_time_available.dev_attr.attr,
&dev_attr_in_illuminance0_target_input.attr,
&dev_attr_in_illuminance0_calibrate.attr,
&dev_attr_in_illuminance0_lux_table.attr,
@@ -1272,18 +1308,14 @@ static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {

static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
&dev_attr_in_proximity0_calibrate.attr,
- &iio_const_attr_in_proximity0_calibscale_available.dev_attr.attr,
NULL
};

static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
- &iio_const_attr_in_intensity0_calibscale_available.dev_attr.attr,
- &iio_const_attr_in_intensity0_integration_time_available.dev_attr.attr,
&dev_attr_in_illuminance0_target_input.attr,
&dev_attr_in_illuminance0_calibrate.attr,
&dev_attr_in_illuminance0_lux_table.attr,
&dev_attr_in_proximity0_calibrate.attr,
- &iio_const_attr_in_proximity0_calibscale_available.dev_attr.attr,
NULL
};

@@ -1309,6 +1341,7 @@ static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
{ \
.attrs = &tsl2X7X_device_attr_group_tbl[type], \
.read_raw = &tsl2x7x_read_raw, \
+ .read_avail = &tsl2x7x_read_avail, \
.write_raw = &tsl2x7x_write_raw, \
.read_event_value = &tsl2x7x_read_event_value, \
.write_event_value = &tsl2x7x_write_event_value, \
@@ -1357,6 +1390,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
.event_spec = tsl2x7x_events,
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
}, {
@@ -1379,6 +1415,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
}, {
.type = IIO_INTENSITY,
.indexed = 1,
@@ -1425,6 +1464,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
.event_spec = tsl2x7x_events,
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
}, {
@@ -1455,6 +1497,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
}, {
.type = IIO_INTENSITY,
.indexed = 1,
@@ -1478,6 +1523,8 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
.channel = 0,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
.event_spec = tsl2x7x_events,
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
},
@@ -1489,6 +1536,8 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
.channel = 0,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
},
},
.chan_table_elements = 1,
@@ -1509,6 +1558,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
.event_spec = tsl2x7x_events,
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
}, {
@@ -1522,6 +1574,8 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
.channel = 0,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
.event_spec = tsl2x7x_events,
.num_event_specs = ARRAY_SIZE(tsl2x7x_events),
},
@@ -1540,6 +1594,9 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_CALIBSCALE) |
BIT(IIO_CHAN_INFO_CALIBBIAS),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_INT_TIME) |
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
}, {
.type = IIO_INTENSITY,
.indexed = 1,
@@ -1551,6 +1608,8 @@ static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
.channel = 0,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBSCALE),
+ .info_mask_separate_available =
+ BIT(IIO_CHAN_INFO_CALIBSCALE),
},
},
.chan_table_elements = 4,
--
2.14.3
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