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-rw-r--r--drivers/iio/iio_core.h2
-rw-r--r--drivers/iio/industrialio-core.c65
-rw-r--r--drivers/iio/industrialio-event.c6
-rw-r--r--drivers/iio/inkern.c16
-rw-r--r--include/linux/iio/iio.h17
-rw-r--r--include/linux/iio/types.h1
6 files changed, 80 insertions, 27 deletions
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index f6db6af36ba6..5f0ea77fe717 100644
--- a/drivers/iio/iio_core.h
+++ b/drivers/iio/iio_core.h
@@ -35,7 +35,7 @@ int __iio_add_chan_devattr(const char *postfix,
struct list_head *attr_list);
void iio_free_chan_devattr_list(struct list_head *attr_list);
-ssize_t iio_format_value(char *buf, unsigned int type, int val, int val2);
+ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
/* Event interface flags */
#define IIO_BUSY_BIT_POS 1
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 184444db62ac..59540859bfae 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -373,41 +373,53 @@ EXPORT_SYMBOL_GPL(iio_enum_write);
* @buf: The buffer to which the formated value gets written
* @type: One of the IIO_VAL_... constants. This decides how the val and val2
* parameters are formatted.
- * @val: First part of the value, exact meaning depends on the type parameter.
- * @val2: Second part of the value, exact meaning depends on the type parameter.
+ * @vals: pointer to the values, exact meaning depends on the type parameter.
*/
-ssize_t iio_format_value(char *buf, unsigned int type, int val, int val2)
+ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals)
{
unsigned long long tmp;
bool scale_db = false;
switch (type) {
case IIO_VAL_INT:
- return sprintf(buf, "%d\n", val);
+ return sprintf(buf, "%d\n", vals[0]);
case IIO_VAL_INT_PLUS_MICRO_DB:
scale_db = true;
case IIO_VAL_INT_PLUS_MICRO:
- if (val2 < 0)
- return sprintf(buf, "-%ld.%06u%s\n", abs(val), -val2,
+ if (vals[1] < 0)
+ return sprintf(buf, "-%ld.%06u%s\n", abs(vals[0]),
+ -vals[1],
scale_db ? " dB" : "");
else
- return sprintf(buf, "%d.%06u%s\n", val, val2,
+ return sprintf(buf, "%d.%06u%s\n", vals[0], vals[1],
scale_db ? " dB" : "");
case IIO_VAL_INT_PLUS_NANO:
- if (val2 < 0)
- return sprintf(buf, "-%ld.%09u\n", abs(val), -val2);
+ if (vals[1] < 0)
+ return sprintf(buf, "-%ld.%09u\n", abs(vals[0]),
+ -vals[1]);
else
- return sprintf(buf, "%d.%09u\n", val, val2);
+ return sprintf(buf, "%d.%09u\n", vals[0], vals[1]);
case IIO_VAL_FRACTIONAL:
- tmp = div_s64((s64)val * 1000000000LL, val2);
- val2 = do_div(tmp, 1000000000LL);
- val = tmp;
- return sprintf(buf, "%d.%09u\n", val, val2);
+ tmp = div_s64((s64)vals[0] * 1000000000LL, vals[1]);
+ vals[1] = do_div(tmp, 1000000000LL);
+ vals[0] = tmp;
+ return sprintf(buf, "%d.%09u\n", vals[0], vals[1]);
case IIO_VAL_FRACTIONAL_LOG2:
- tmp = (s64)val * 1000000000LL >> val2;
- val2 = do_div(tmp, 1000000000LL);
- val = tmp;
- return sprintf(buf, "%d.%09u\n", val, val2);
+ tmp = (s64)vals[0] * 1000000000LL >> vals[1];
+ vals[1] = do_div(tmp, 1000000000LL);
+ vals[0] = tmp;
+ return sprintf(buf, "%d.%09u\n", vals[0], vals[1]);
+ case IIO_VAL_INT_MULTIPLE:
+ {
+ int i;
+ int len = 0;
+
+ for (i = 0; i < size; ++i)
+ len += snprintf(&buf[len], PAGE_SIZE - len, "%d ",
+ vals[i]);
+ len += snprintf(&buf[len], PAGE_SIZE - len, "\n");
+ return len;
+ }
default:
return 0;
}
@@ -419,14 +431,23 @@ static ssize_t iio_read_channel_info(struct device *dev,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int val, val2;
- int ret = indio_dev->info->read_raw(indio_dev, this_attr->c,
- &val, &val2, this_attr->address);
+ int vals[INDIO_MAX_RAW_ELEMENTS];
+ int ret;
+ int val_len = 2;
+
+ if (indio_dev->info->read_raw_multi)
+ ret = indio_dev->info->read_raw_multi(indio_dev, this_attr->c,
+ INDIO_MAX_RAW_ELEMENTS,
+ vals, &val_len,
+ this_attr->address);
+ else
+ ret = indio_dev->info->read_raw(indio_dev, this_attr->c,
+ &vals[0], &vals[1], this_attr->address);
if (ret < 0)
return ret;
- return iio_format_value(buf, ret, val, val2);
+ return iio_format_value(buf, ret, val_len, vals);
}
/**
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index dddfb0f90d34..258a973a1fb8 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -270,7 +270,7 @@ static ssize_t iio_ev_value_show(struct device *dev,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int val, val2;
+ int val, val2, val_arr[2];
int ret;
ret = indio_dev->info->read_event_value(indio_dev,
@@ -279,7 +279,9 @@ static ssize_t iio_ev_value_show(struct device *dev,
&val, &val2);
if (ret < 0)
return ret;
- return iio_format_value(buf, ret, val, val2);
+ val_arr[0] = val;
+ val_arr[1] = val2;
+ return iio_format_value(buf, ret, 2, val_arr);
}
static ssize_t iio_ev_value_store(struct device *dev,
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index adeba5a0ecf7..d833d55052ea 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -417,12 +417,24 @@ static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
enum iio_chan_info_enum info)
{
int unused;
+ int vals[INDIO_MAX_RAW_ELEMENTS];
+ int ret;
+ int val_len = 2;
if (val2 == NULL)
val2 = &unused;
- return chan->indio_dev->info->read_raw(chan->indio_dev, chan->channel,
- val, val2, info);
+ if (chan->indio_dev->info->read_raw_multi) {
+ ret = chan->indio_dev->info->read_raw_multi(chan->indio_dev,
+ chan->channel, INDIO_MAX_RAW_ELEMENTS,
+ vals, &val_len, info);
+ *val = vals[0];
+ *val2 = vals[1];
+ } else
+ ret = chan->indio_dev->info->read_raw(chan->indio_dev,
+ chan->channel, val, val2, info);
+
+ return ret;
}
int iio_read_channel_raw(struct iio_channel *chan, int *val)
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 5f2d00e7e488..5629c92eeadf 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -288,6 +288,8 @@ static inline s64 iio_get_time_ns(void)
#define INDIO_ALL_BUFFER_MODES \
(INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE)
+#define INDIO_MAX_RAW_ELEMENTS 4
+
struct iio_trigger; /* forward declaration */
struct iio_dev;
@@ -302,6 +304,14 @@ struct iio_dev;
* the channel in question. Return value will specify the
* type of value returned by the device. val and val2 will
* contain the elements making up the returned value.
+ * @read_raw_multi: function to return values from the device.
+ * mask specifies which value. Note 0 means a reading of
+ * the channel in question. Return value will specify the
+ * type of value returned by the device. vals pointer
+ * contain the elements making up the returned value.
+ * max_len specifies maximum number of elements
+ * vals pointer can contain. val_len is used to return
+ * length of valid elements in vals.
* @write_raw: function to write a value to the device.
* Parameters are the same as for read_raw.
* @write_raw_get_fmt: callback function to query the expected
@@ -328,6 +338,13 @@ struct iio_info {
int *val2,
long mask);
+ int (*read_raw_multi)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int max_len,
+ int *vals,
+ int *val_len,
+ long mask);
+
int (*write_raw)(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val,
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 084d882fe01b..a13c2241abce 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -79,6 +79,7 @@ enum iio_event_direction {
#define IIO_VAL_INT_PLUS_MICRO 2
#define IIO_VAL_INT_PLUS_NANO 3
#define IIO_VAL_INT_PLUS_MICRO_DB 4
+#define IIO_VAL_INT_MULTIPLE 5
#define IIO_VAL_FRACTIONAL 10
#define IIO_VAL_FRACTIONAL_LOG2 11
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 05:11:48 +0100