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-rw-r--r--kernel/drivers/iio/gyro/Kconfig3
-rw-r--r--kernel/drivers/iio/imu/adis16400_core.c2
-rw-r--r--kernel/drivers/iio/imu/adis16480.c39
-rw-r--r--kernel/drivers/iio/industrialio-buffer.c2
-rw-r--r--kernel/drivers/iio/industrialio-event.c2
5 files changed, 38 insertions, 10 deletions
diff --git a/kernel/drivers/iio/gyro/Kconfig b/kernel/drivers/iio/gyro/Kconfig
index b3d0e94f7..8d2439345 100644
--- a/kernel/drivers/iio/gyro/Kconfig
+++ b/kernel/drivers/iio/gyro/Kconfig
@@ -53,7 +53,8 @@ config ADXRS450
config BMG160
tristate "BOSCH BMG160 Gyro Sensor"
depends on I2C
- select IIO_TRIGGERED_BUFFER if IIO_BUFFER
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor
driver. This driver also supports BMI055 gyroscope.
diff --git a/kernel/drivers/iio/imu/adis16400_core.c b/kernel/drivers/iio/imu/adis16400_core.c
index 2fd68f221..d42e4fe2c 100644
--- a/kernel/drivers/iio/imu/adis16400_core.c
+++ b/kernel/drivers/iio/imu/adis16400_core.c
@@ -780,7 +780,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.flags = ADIS16400_HAS_PROD_ID |
ADIS16400_HAS_SERIAL_NUMBER |
ADIS16400_BURST_DIAG_STAT,
- .gyro_scale_micro = IIO_DEGREE_TO_RAD(10000), /* 0.01 deg/s */
+ .gyro_scale_micro = IIO_DEGREE_TO_RAD(40000), /* 0.04 deg/s */
.accel_scale_micro = IIO_G_TO_M_S_2(833), /* 1/1200 g */
.temp_scale_nano = 73860000, /* 0.07386 C */
.temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
diff --git a/kernel/drivers/iio/imu/adis16480.c b/kernel/drivers/iio/imu/adis16480.c
index 989605dd6..b94bfd3f5 100644
--- a/kernel/drivers/iio/imu/adis16480.c
+++ b/kernel/drivers/iio/imu/adis16480.c
@@ -110,6 +110,10 @@
struct adis16480_chip_info {
unsigned int num_channels;
const struct iio_chan_spec *channels;
+ unsigned int gyro_max_val;
+ unsigned int gyro_max_scale;
+ unsigned int accel_max_val;
+ unsigned int accel_max_scale;
};
struct adis16480 {
@@ -497,19 +501,21 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
static int adis16480_read_raw(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, int *val, int *val2, long info)
{
+ struct adis16480 *st = iio_priv(indio_dev);
+
switch (info) {
case IIO_CHAN_INFO_RAW:
return adis_single_conversion(indio_dev, chan, 0, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_ANGL_VEL:
- *val = 0;
- *val2 = IIO_DEGREE_TO_RAD(20000); /* 0.02 degree/sec */
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = st->chip_info->gyro_max_scale;
+ *val2 = st->chip_info->gyro_max_val;
+ return IIO_VAL_FRACTIONAL;
case IIO_ACCEL:
- *val = 0;
- *val2 = IIO_G_TO_M_S_2(800); /* 0.8 mg */
- return IIO_VAL_INT_PLUS_MICRO;
+ *val = st->chip_info->accel_max_scale;
+ *val2 = st->chip_info->accel_max_val;
+ return IIO_VAL_FRACTIONAL;
case IIO_MAGN:
*val = 0;
*val2 = 100; /* 0.0001 gauss */
@@ -674,18 +680,39 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16375] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
+ /*
+ * storing the value in rad/degree and the scale in degree
+ * gives us the result in rad and better precession than
+ * storing the scale directly in rad.
+ */
+ .gyro_max_val = IIO_RAD_TO_DEGREE(22887),
+ .gyro_max_scale = 300,
+ .accel_max_val = IIO_M_S_2_TO_G(21973),
+ .accel_max_scale = 18,
},
[ADIS16480] = {
.channels = adis16480_channels,
.num_channels = ARRAY_SIZE(adis16480_channels),
+ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
+ .gyro_max_scale = 450,
+ .accel_max_val = IIO_M_S_2_TO_G(12500),
+ .accel_max_scale = 5,
},
[ADIS16485] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
+ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
+ .gyro_max_scale = 450,
+ .accel_max_val = IIO_M_S_2_TO_G(20000),
+ .accel_max_scale = 5,
},
[ADIS16488] = {
.channels = adis16480_channels,
.num_channels = ARRAY_SIZE(adis16480_channels),
+ .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
+ .gyro_max_scale = 450,
+ .accel_max_val = IIO_M_S_2_TO_G(22500),
+ .accel_max_scale = 18,
},
};
diff --git a/kernel/drivers/iio/industrialio-buffer.c b/kernel/drivers/iio/industrialio-buffer.c
index df919f44d..7fa280b28 100644
--- a/kernel/drivers/iio/industrialio-buffer.c
+++ b/kernel/drivers/iio/industrialio-buffer.c
@@ -151,7 +151,7 @@ unsigned int iio_buffer_poll(struct file *filp,
struct iio_buffer *rb = indio_dev->buffer;
if (!indio_dev->info)
- return -ENODEV;
+ return 0;
poll_wait(filp, &rb->pollq, wait);
if (iio_buffer_ready(indio_dev, rb, rb->watermark, 0))
diff --git a/kernel/drivers/iio/industrialio-event.c b/kernel/drivers/iio/industrialio-event.c
index a99692ba9..69b8c338f 100644
--- a/kernel/drivers/iio/industrialio-event.c
+++ b/kernel/drivers/iio/industrialio-event.c
@@ -84,7 +84,7 @@ static unsigned int iio_event_poll(struct file *filep,
unsigned int events = 0;
if (!indio_dev->info)
- return -ENODEV;
+ return events;
poll_wait(filep, &ev_int->wait, wait);