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path: root/drivers/iio/proximity/sx9324.c
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Diffstat (limited to 'drivers/iio/proximity/sx9324.c')
-rw-r--r--drivers/iio/proximity/sx9324.c178
1 files changed, 79 insertions, 99 deletions
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c
index ac2ed2da21..aa0d14a49d 100644
--- a/drivers/iio/proximity/sx9324.c
+++ b/drivers/iio/proximity/sx9324.c
@@ -429,25 +429,16 @@ static int sx9324_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 = sx9324_read_gain(data, chan, val);
- iio_device_release_direct_mode(indio_dev);
- return ret;
+ iio_device_claim_direct_scoped(return -EBUSY, indio_dev)
+ return sx9324_read_gain(data, chan, val);
+ unreachable();
case IIO_CHAN_INFO_SAMP_FREQ:
return sx9324_read_samp_freq(data, val, val2);
default:
@@ -484,7 +475,7 @@ static int sx9324_read_avail(struct iio_dev *indio_dev,
static int sx9324_set_samp_freq(struct sx_common_data *data,
int val, int val2)
{
- int i, ret;
+ int i;
for (i = 0; i < ARRAY_SIZE(sx9324_samp_freq_table); i++)
if (val == sx9324_samp_freq_table[i].val &&
@@ -494,15 +485,11 @@ static int sx9324_set_samp_freq(struct sx_common_data *data,
if (i == ARRAY_SIZE(sx9324_samp_freq_table))
return -EINVAL;
- mutex_lock(&data->mutex);
-
- ret = regmap_update_bits(data->regmap,
- SX9324_REG_GNRL_CTRL0,
- SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, i);
-
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_update_bits(data->regmap,
+ SX9324_REG_GNRL_CTRL0,
+ SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, i);
}
static int sx9324_read_thresh(struct sx_common_data *data,
@@ -623,7 +610,6 @@ static int sx9324_write_thresh(struct sx_common_data *data,
const struct iio_chan_spec *chan, int _val)
{
unsigned int reg, val = _val;
- int ret;
reg = SX9324_REG_PROX_CTRL6 + chan->channel / 2;
@@ -633,11 +619,9 @@ static int sx9324_write_thresh(struct sx_common_data *data,
if (val > 0xff)
return -EINVAL;
- mutex_lock(&data->mutex);
- ret = regmap_write(data->regmap, reg, val);
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_write(data->regmap, reg, val);
}
static int sx9324_write_hysteresis(struct sx_common_data *data,
@@ -662,18 +646,15 @@ static int sx9324_write_hysteresis(struct sx_common_data *data,
return -EINVAL;
hyst = FIELD_PREP(SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
- mutex_lock(&data->mutex);
- ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
- SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
}
static int sx9324_write_far_debounce(struct sx_common_data *data, int _val)
{
unsigned int regval, val = _val;
- int ret;
if (val > 0)
val = ilog2(val);
@@ -682,19 +663,16 @@ static int sx9324_write_far_debounce(struct sx_common_data *data, int _val)
regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, val);
- mutex_lock(&data->mutex);
- ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
- SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK,
- regval);
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK,
+ regval);
}
static int sx9324_write_close_debounce(struct sx_common_data *data, int _val)
{
unsigned int regval, val = _val;
- int ret;
if (val > 0)
val = ilog2(val);
@@ -703,13 +681,11 @@ static int sx9324_write_close_debounce(struct sx_common_data *data, int _val)
regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, val);
- mutex_lock(&data->mutex);
- ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
- SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK,
- regval);
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK,
+ regval);
}
static int sx9324_write_event_val(struct iio_dev *indio_dev,
@@ -746,7 +722,6 @@ static int sx9324_write_gain(struct sx_common_data *data,
const struct iio_chan_spec *chan, int val)
{
unsigned int gain, reg;
- int ret;
reg = SX9324_REG_PROX_CTRL0 + chan->channel / 2;
@@ -756,13 +731,11 @@ static int sx9324_write_gain(struct sx_common_data *data,
gain = FIELD_PREP(SX9324_REG_PROX_CTRL0_GAIN_MASK, gain);
- mutex_lock(&data->mutex);
- ret = regmap_update_bits(data->regmap, reg,
- SX9324_REG_PROX_CTRL0_GAIN_MASK,
- gain);
- mutex_unlock(&data->mutex);
+ guard(mutex)(&data->mutex);
- return ret;
+ return regmap_update_bits(data->regmap, reg,
+ SX9324_REG_PROX_CTRL0_GAIN_MASK,
+ gain);
}
static int sx9324_write_raw(struct iio_dev *indio_dev,
@@ -873,6 +846,29 @@ static int sx9324_init_compensation(struct iio_dev *indio_dev)
20000, 2000000);
}
+static u8 sx9324_parse_phase_prop(struct device *dev,
+ struct sx_common_reg_default *reg_def,
+ const char *prop)
+{
+ unsigned int pin_defs[SX9324_NUM_PINS];
+ int count, ret, pin;
+ u32 raw = 0;
+
+ count = device_property_count_u32(dev, prop);
+ if (count != ARRAY_SIZE(pin_defs))
+ return reg_def->def;
+ ret = device_property_read_u32_array(dev, prop, pin_defs,
+ ARRAY_SIZE(pin_defs));
+ if (ret)
+ return reg_def->def;
+
+ for (pin = 0; pin < SX9324_NUM_PINS; pin++)
+ raw |= (pin_defs[pin] << (2 * pin)) &
+ SX9324_REG_AFE_PH0_PIN_MASK(pin);
+
+ return raw;
+}
+
static const struct sx_common_reg_default *
sx9324_get_default_reg(struct device *dev, int idx,
struct sx_common_reg_default *reg_def)
@@ -881,37 +877,29 @@ sx9324_get_default_reg(struct device *dev, int idx,
"highest" };
static const char * const sx9324_csidle[] = { "hi-z", "hi-z", "gnd",
"vdd" };
-#define SX9324_PIN_DEF "semtech,ph0-pin"
-#define SX9324_RESOLUTION_DEF "semtech,ph01-resolution"
-#define SX9324_PROXRAW_DEF "semtech,ph01-proxraw-strength"
- unsigned int pin_defs[SX9324_NUM_PINS];
- char prop[] = SX9324_PROXRAW_DEF;
u32 start = 0, raw = 0, pos = 0;
- int ret, count, ph, pin;
+ const char *prop;
+ int ret;
memcpy(reg_def, &sx9324_default_regs[idx], sizeof(*reg_def));
sx_common_get_raw_register_config(dev, reg_def);
switch (reg_def->reg) {
case SX9324_REG_AFE_PH0:
+ reg_def->def = sx9324_parse_phase_prop(dev, reg_def,
+ "semtech,ph0-pin");
+ break;
case SX9324_REG_AFE_PH1:
+ reg_def->def = sx9324_parse_phase_prop(dev, reg_def,
+ "semtech,ph1-pin");
+ break;
case SX9324_REG_AFE_PH2:
+ reg_def->def = sx9324_parse_phase_prop(dev, reg_def,
+ "semtech,ph2-pin");
+ break;
case SX9324_REG_AFE_PH3:
- ph = reg_def->reg - SX9324_REG_AFE_PH0;
- snprintf(prop, ARRAY_SIZE(prop), "semtech,ph%d-pin", ph);
-
- count = device_property_count_u32(dev, prop);
- if (count != ARRAY_SIZE(pin_defs))
- break;
- ret = device_property_read_u32_array(dev, prop, pin_defs,
- ARRAY_SIZE(pin_defs));
- if (ret)
- break;
-
- for (pin = 0; pin < SX9324_NUM_PINS; pin++)
- raw |= (pin_defs[pin] << (2 * pin)) &
- SX9324_REG_AFE_PH0_PIN_MASK(pin);
- reg_def->def = raw;
+ reg_def->def = sx9324_parse_phase_prop(dev, reg_def,
+ "semtech,ph3-pin");
break;
case SX9324_REG_AFE_CTRL0:
ret = device_property_match_property_string(dev, "semtech,cs-idle-sleep",
@@ -933,11 +921,9 @@ sx9324_get_default_reg(struct device *dev, int idx,
case SX9324_REG_AFE_CTRL4:
case SX9324_REG_AFE_CTRL7:
if (reg_def->reg == SX9324_REG_AFE_CTRL4)
- strncpy(prop, "semtech,ph01-resolution",
- ARRAY_SIZE(prop));
+ prop = "semtech,ph01-resolution";
else
- strncpy(prop, "semtech,ph23-resolution",
- ARRAY_SIZE(prop));
+ prop = "semtech,ph23-resolution";
ret = device_property_read_u32(dev, prop, &raw);
if (ret)
@@ -1008,11 +994,9 @@ sx9324_get_default_reg(struct device *dev, int idx,
case SX9324_REG_PROX_CTRL0:
case SX9324_REG_PROX_CTRL1:
if (reg_def->reg == SX9324_REG_PROX_CTRL0)
- strncpy(prop, "semtech,ph01-proxraw-strength",
- ARRAY_SIZE(prop));
+ prop = "semtech,ph01-proxraw-strength";
else
- strncpy(prop, "semtech,ph23-proxraw-strength",
- ARRAY_SIZE(prop));
+ prop = "semtech,ph23-proxraw-strength";
ret = device_property_read_u32(dev, prop, &raw);
if (ret)
break;
@@ -1081,34 +1065,30 @@ static int sx9324_suspend(struct device *dev)
disable_irq_nosync(data->client->irq);
- mutex_lock(&data->mutex);
+ guard(mutex)(&data->mutex);
ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL1, &regval);
+ if (ret < 0)
+ return ret;
data->suspend_ctrl =
FIELD_GET(SX9324_REG_GNRL_CTRL1_PHEN_MASK, regval);
- if (ret < 0)
- goto out;
/* Disable all phases, send the device to sleep. */
- ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1, 0);
-
-out:
- mutex_unlock(&data->mutex);
- return ret;
+ return regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1, 0);
}
static int sx9324_resume(struct device *dev)
{
struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
- int ret;
- mutex_lock(&data->mutex);
- ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1,
- data->suspend_ctrl | SX9324_REG_GNRL_CTRL1_PAUSECTRL);
- mutex_unlock(&data->mutex);
- if (ret)
- return ret;
+ scoped_guard(mutex, &data->mutex) {
+ int ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1,
+ data->suspend_ctrl |
+ SX9324_REG_GNRL_CTRL1_PAUSECTRL);
+ if (ret)
+ return ret;
+ }
enable_irq(data->client->irq);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 01:22:37 +0000