Add some helpers to lock and unlock the device. As this is such a simple
change, we update all the users that were using the lock already in this
patch.
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
---
drivers/iio/imu/adis16400.c | 22 ++++++++++------------
drivers/iio/imu/adis16475.c | 10 +++++-----
drivers/iio/imu/adis16480.c | 15 +++++++--------
include/linux/iio/imu/adis.h | 10 ++++++++++
4 files changed, 32 insertions(+), 25 deletions(-)
diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index 54af2ed664f6..b1ec14bf439f 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -505,7 +505,6 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int val, int val2, long info)
{
struct adis16400_state *st = iio_priv(indio_dev);
- struct mutex *slock = &st->adis.state_lock;
int ret, sps;
switch (info) {
@@ -518,18 +517,18 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
* Need to cache values so we can update if the frequency
* changes.
*/
- mutex_lock(slock);
+ adis_dev_lock(&st->adis);
st->filt_int = val;
/* Work out update to current value */
sps = st->variant->get_freq(st);
if (sps < 0) {
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
return sps;
}
ret = __adis16400_set_filter(indio_dev, sps,
val * 1000 + val2 / 1000);
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
return ret;
case IIO_CHAN_INFO_SAMP_FREQ:
sps = val * 1000 + val2 / 1000;
@@ -537,9 +536,9 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
if (sps <= 0)
return -EINVAL;
- mutex_lock(slock);
+ adis_dev_lock(&st->adis);
ret = st->variant->set_freq(st, sps);
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
return ret;
default:
return -EINVAL;
@@ -550,7 +549,6 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val, int *val2, long info)
{
struct adis16400_state *st = iio_priv(indio_dev);
- struct mutex *slock = &st->adis.state_lock;
int16_t val16;
int ret;
@@ -606,17 +604,17 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
*val = st->variant->temp_offset;
return IIO_VAL_INT;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
- mutex_lock(slock);
+ adis_dev_lock(&st->adis);
/* Need both the number of taps and the sampling frequency */
ret = __adis_read_reg_16(&st->adis,
ADIS16400_SENS_AVG,
&val16);
if (ret) {
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
return ret;
}
ret = st->variant->get_freq(st);
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
if (ret)
return ret;
ret /= adis16400_3db_divisors[val16 & 0x07];
@@ -624,9 +622,9 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
*val2 = (ret % 1000) * 1000;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_SAMP_FREQ:
- mutex_lock(slock);
+ adis_dev_lock(&st->adis);
ret = st->variant->get_freq(st);
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
if (ret)
return ret;
*val = ret / 1000;
diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c
index 5759cd8ffbef..8f6bea4b6608 100644
--- a/drivers/iio/imu/adis16475.c
+++ b/drivers/iio/imu/adis16475.c
@@ -263,7 +263,7 @@ static int adis16475_get_freq(struct adis16475 *st, u32 *freq)
u16 dec;
u32 sample_rate = st->clk_freq;
- mutex_lock(&st->adis.state_lock);
+ adis_dev_lock(&st->adis);
if (st->sync_mode == ADIS16475_SYNC_SCALED) {
u16 sync_scale;
@@ -279,13 +279,13 @@ static int adis16475_get_freq(struct adis16475 *st, u32 *freq)
if (ret)
goto error;
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
*freq = DIV_ROUND_CLOSEST(sample_rate, dec + 1);
return 0;
error:
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
return ret;
}
@@ -298,7 +298,7 @@ static int adis16475_set_freq(struct adis16475 *st, const u32 freq)
if (!freq)
return -EINVAL;
- mutex_lock(&st->adis.state_lock);
+ adis_dev_lock(&st->adis);
/*
* When using sync scaled mode, the input clock needs to be scaled so that we have
* an IMU sample rate between (optimally) 1900 and 2100. After this, we can use the
@@ -366,7 +366,7 @@ static int adis16475_set_freq(struct adis16475 *st, const u32 freq)
return 0;
error:
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
return ret;
}
diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
index c41b8ef1e250..f81b86690b76 100644
--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -329,7 +329,7 @@ static int adis16480_set_freq(struct iio_dev *indio_dev, int val, int val2)
if (t == 0)
return -EINVAL;
- mutex_lock(&st->adis.state_lock);
+ adis_dev_lock(&st->adis);
/*
* When using PPS mode, the input clock needs to be scaled so that we have an IMU
* sample rate between (optimally) 4000 and 4250. After this, we can use the
@@ -386,7 +386,7 @@ static int adis16480_set_freq(struct iio_dev *indio_dev, int val, int val2)
ret = __adis_write_reg_16(&st->adis, ADIS16480_REG_DEC_RATE, t);
error:
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
return ret;
}
@@ -397,7 +397,7 @@ static int adis16480_get_freq(struct iio_dev *indio_dev, int *val, int *val2)
int ret;
unsigned int freq, sample_rate = st->clk_freq;
- mutex_lock(&st->adis.state_lock);
+ adis_dev_lock(&st->adis);
if (st->clk_mode == ADIS16480_CLK_PPS) {
u16 sync_scale;
@@ -413,7 +413,7 @@ static int adis16480_get_freq(struct iio_dev *indio_dev, int *val, int *val2)
if (ret)
goto error;
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
freq = DIV_ROUND_CLOSEST(sample_rate, (t + 1));
@@ -422,7 +422,7 @@ static int adis16480_get_freq(struct iio_dev *indio_dev, int *val, int *val2)
return IIO_VAL_INT_PLUS_MICRO;
error:
- mutex_unlock(&st->adis.state_lock);
+ adis_dev_unlock(&st->adis);
return ret;
}
@@ -598,7 +598,6 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, unsigned int freq)
{
struct adis16480 *st = iio_priv(indio_dev);
- struct mutex *slock = &st->adis.state_lock;
unsigned int enable_mask, offset, reg;
unsigned int diff, best_diff;
unsigned int i, best_freq;
@@ -609,7 +608,7 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
offset = ad16480_filter_data[chan->scan_index][1];
enable_mask = BIT(offset + 2);
- mutex_lock(slock);
+ adis_dev_lock(&st->adis);
ret = __adis_read_reg_16(&st->adis, reg, &val);
if (ret)
@@ -637,7 +636,7 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
ret = __adis_write_reg_16(&st->adis, reg, val);
out_unlock:
- mutex_unlock(slock);
+ adis_dev_unlock(&st->adis);
return ret;
}
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index 04e96d688ba9..f9b728d490b1 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -428,6 +428,16 @@ static inline int adis_initial_startup(struct adis *adis)
return ret;
}
+static inline void adis_dev_lock(struct adis *adis)
+{
+ mutex_lock(&adis->state_lock);
+}
+
+static inline void adis_dev_unlock(struct adis *adis)
+{
+ mutex_unlock(&adis->state_lock);
+}
+
int adis_single_conversion(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, unsigned int error_mask,
int *val);
--
2.30.1
