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iio: proximity: sx9360: Use automated cleanup for locks and IIO mode claiming.

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This simplifies error handling paths and generallly removes a bunch
of boilerplate.

Reviewed-by: Nuno Sa <nuno.a@analog.com>
Link: https://lore.kernel.org/r/20240128150537.44592-7-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jonathan Cameron 2024-01-28 15:05:33 +00:00
parent 3d329bcd48
commit fba730dd8a
1 changed files with 39 additions and 76 deletions
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115
drivers/iio/proximity/sx9360.c
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@ -322,25 +322,16 @@ static int sx9360_read_raw(struct iio_dev *indio_dev,
int *val, int *val2, long mask)
{
struct sx_common_data *data = iio_priv(indio_dev);
int ret;
switch (mask) {
case IIO_CHAN_INFO_RAW:
ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
ret = sx_common_read_proximity(data, chan, val);
iio_device_release_direct_mode(indio_dev);
return ret;
iio_device_claim_direct_scoped(return -EBUSY, indio_dev)
return sx_common_read_proximity(data, chan, val);
unreachable();
case IIO_CHAN_INFO_HARDWAREGAIN:
ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
ret = sx9360_read_gain(data, chan, val);
iio_device_release_direct_mode(indio_dev);
return ret;
iio_device_claim_direct_scoped(return -EBUSY, indio_dev)
return sx9360_read_gain(data, chan, val);
unreachable();
case IIO_CHAN_INFO_SAMP_FREQ:
return sx9360_read_samp_freq(data, val, val2);
default:
@ -387,19 +378,15 @@ static int sx9360_read_avail(struct iio_dev *indio_dev,
static int sx9360_set_samp_freq(struct sx_common_data *data,
int val, int val2)
{
int ret, reg;
int reg;
__be16 buf;
reg = val * 8192 / SX9360_FOSC_HZ + val2 * 8192 / (SX9360_FOSC_MHZ);
buf = cpu_to_be16(reg);
mutex_lock(&data->mutex);
guard(mutex)(&data->mutex);
ret = regmap_bulk_write(data->regmap, SX9360_REG_GNRL_CTRL1, &buf,
sizeof(buf));
mutex_unlock(&data->mutex);
return ret;
return regmap_bulk_write(data->regmap, SX9360_REG_GNRL_CTRL1, &buf,
sizeof(buf));
}
static int sx9360_read_thresh(struct sx_common_data *data, int *val)
@ -510,7 +497,6 @@ static int sx9360_read_event_val(struct iio_dev *indio_dev,
static int sx9360_write_thresh(struct sx_common_data *data, int _val)
{
unsigned int val = _val;
int ret;
if (val >= 1)
val = int_sqrt(2 * val);
@ -518,11 +504,8 @@ static int sx9360_write_thresh(struct sx_common_data *data, int _val)
if (val > 0xff)
return -EINVAL;
mutex_lock(&data->mutex);
ret = regmap_write(data->regmap, SX9360_REG_PROX_CTRL5, val);
mutex_unlock(&data->mutex);
return ret;
guard(mutex)(&data->mutex);
return regmap_write(data->regmap, SX9360_REG_PROX_CTRL5, val);
}
static int sx9360_write_hysteresis(struct sx_common_data *data, int _val)
@ -546,18 +529,14 @@ static int sx9360_write_hysteresis(struct sx_common_data *data, int _val)
return -EINVAL;
hyst = FIELD_PREP(SX9360_REG_PROX_CTRL4_HYST_MASK, hyst);
mutex_lock(&data->mutex);
ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_HYST_MASK, hyst);
mutex_unlock(&data->mutex);
return ret;
guard(mutex)(&data->mutex);
return regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_HYST_MASK, hyst);
}
static int sx9360_write_far_debounce(struct sx_common_data *data, int _val)
{
unsigned int regval, val = _val;
int ret;
if (val > 0)
val = ilog2(val);
@ -566,19 +545,15 @@ static int sx9360_write_far_debounce(struct sx_common_data *data, int _val)
regval = FIELD_PREP(SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK, val);
mutex_lock(&data->mutex);
ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK,
regval);
mutex_unlock(&data->mutex);
return ret;
guard(mutex)(&data->mutex);
return regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK,
regval);
}
static int sx9360_write_close_debounce(struct sx_common_data *data, int _val)
{
unsigned int regval, val = _val;
int ret;
if (val > 0)
val = ilog2(val);
@ -587,13 +562,10 @@ static int sx9360_write_close_debounce(struct sx_common_data *data, int _val)
regval = FIELD_PREP(SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK, val);
mutex_lock(&data->mutex);
ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK,
regval);
mutex_unlock(&data->mutex);
return ret;
guard(mutex)(&data->mutex);
return regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK,
regval);
}
static int sx9360_write_event_val(struct iio_dev *indio_dev,
@ -630,19 +602,15 @@ static int sx9360_write_gain(struct sx_common_data *data,
const struct iio_chan_spec *chan, int val)
{
unsigned int gain, reg;
int ret;
gain = ilog2(val);
reg = SX9360_REG_PROX_CTRL0_PHR + chan->channel;
gain = FIELD_PREP(SX9360_REG_PROX_CTRL0_GAIN_MASK, gain);
mutex_lock(&data->mutex);
ret = regmap_update_bits(data->regmap, reg,
SX9360_REG_PROX_CTRL0_GAIN_MASK,
gain);
mutex_unlock(&data->mutex);
return ret;
guard(mutex)(&data->mutex);
return regmap_update_bits(data->regmap, reg,
SX9360_REG_PROX_CTRL0_GAIN_MASK,
gain);
}
static int sx9360_write_raw(struct iio_dev *indio_dev,
@ -827,36 +795,31 @@ static int sx9360_suspend(struct device *dev)
disable_irq_nosync(data->client->irq);
mutex_lock(&data->mutex);
guard(mutex)(&data->mutex);
ret = regmap_read(data->regmap, SX9360_REG_GNRL_CTRL0, &regval);
if (ret < 0)
return ret;
data->suspend_ctrl =
FIELD_GET(SX9360_REG_GNRL_CTRL0_PHEN_MASK, regval);
if (ret < 0)
goto out;
/* Disable all phases, send the device to sleep. */
ret = regmap_write(data->regmap, SX9360_REG_GNRL_CTRL0, 0);
out:
mutex_unlock(&data->mutex);
return ret;
return regmap_write(data->regmap, SX9360_REG_GNRL_CTRL0, 0);
}
static int sx9360_resume(struct device *dev)
{
struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
int ret;
mutex_lock(&data->mutex);
ret = regmap_update_bits(data->regmap, SX9360_REG_GNRL_CTRL0,
SX9360_REG_GNRL_CTRL0_PHEN_MASK,
data->suspend_ctrl);
mutex_unlock(&data->mutex);
if (ret)
return ret;
scoped_guard(mutex, &data->mutex) {
int ret = regmap_update_bits(data->regmap,
SX9360_REG_GNRL_CTRL0,
SX9360_REG_GNRL_CTRL0_PHEN_MASK,
data->suspend_ctrl);
if (ret)
return ret;
}
enable_irq(data->client->irq);
return 0;
}