iio: bmc150: refactor slope duration and threshold update
Move the slope duration and threshold update in a separate function to
reduce code duplicate between chip init and motion interrupt setup.
Also move the slope update code from the interrupt setup function to
the trigger set state function so that we can later refactor the
interrupt code.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
index 066d0c0..2b6b80d 100644
--- a/drivers/iio/accel/bmc150-accel.c
+++ b/drivers/iio/accel/bmc150-accel.c
@@ -269,6 +269,37 @@
return -EINVAL;
}
+static int bmc150_accel_update_slope(struct bmc150_accel_data *data)
+{
+ int ret, val;
+
+ ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6,
+ data->slope_thres);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_6\n");
+ return ret;
+ }
+
+ ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_5\n");
+ return ret;
+ }
+
+ val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur;
+ ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5,
+ val);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error write reg_int_5\n");
+ return ret;
+ }
+
+ dev_dbg(&data->client->dev, "%s: %x %x\n", __func__, data->slope_thres,
+ data->slope_dur);
+
+ return ret;
+}
+
static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
{
int ret;
@@ -307,32 +338,12 @@
data->range = BMC150_ACCEL_DEF_RANGE_4G;
- /* Set default slope duration */
- ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_5\n");
- return ret;
- }
- data->slope_dur |= BMC150_ACCEL_DEF_SLOPE_DURATION;
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_5,
- data->slope_dur);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_5\n");
- return ret;
- }
- dev_dbg(&data->client->dev, "slope_dur %x\n", data->slope_dur);
-
- /* Set default slope thresholds */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_6,
- BMC150_ACCEL_DEF_SLOPE_THRESHOLD);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_6\n");
- return ret;
- }
+ /* Set default slope duration and thresholds */
data->slope_thres = BMC150_ACCEL_DEF_SLOPE_THRESHOLD;
- dev_dbg(&data->client->dev, "slope_thres %x\n", data->slope_thres);
+ data->slope_dur = BMC150_ACCEL_DEF_SLOPE_DURATION;
+ ret = bmc150_accel_update_slope(data);
+ if (ret < 0)
+ return ret;
/* Set default as latched interrupts */
ret = i2c_smbus_write_byte_data(data->client,
@@ -375,24 +386,6 @@
}
if (status) {
- /* Set slope duration (no of samples) */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_5,
- data->slope_dur);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error write reg_int_5\n");
- return ret;
- }
-
- /* Set slope thresholds */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_6,
- data->slope_thres);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error write reg_int_6\n");
- return ret;
- }
-
/*
* New data interrupt is always non-latched,
* which will have higher priority, so no need
@@ -732,7 +725,7 @@
*val = data->slope_thres;
break;
case IIO_EV_INFO_PERIOD:
- *val = data->slope_dur & BMC150_ACCEL_SLOPE_DUR_MASK;
+ *val = data->slope_dur;
break;
default:
return -EINVAL;
@@ -755,11 +748,10 @@
switch (info) {
case IIO_EV_INFO_VALUE:
- data->slope_thres = val;
+ data->slope_thres = val & 0xFF;
break;
case IIO_EV_INFO_PERIOD:
- data->slope_dur &= ~BMC150_ACCEL_SLOPE_DUR_MASK;
- data->slope_dur |= val & BMC150_ACCEL_SLOPE_DUR_MASK;
+ data->slope_dur = val & BMC150_ACCEL_SLOPE_DUR_MASK;
break;
default:
return -EINVAL;
@@ -1056,10 +1048,15 @@
mutex_unlock(&data->mutex);
return ret;
}
- if (data->motion_trig == trig)
- ret = bmc150_accel_setup_any_motion_interrupt(data, state);
- else
+
+ if (data->motion_trig == trig) {
+ ret = bmc150_accel_update_slope(data);
+ if (!ret)
+ ret = bmc150_accel_setup_any_motion_interrupt(data,
+ state);
+ } else {
ret = bmc150_accel_setup_new_data_interrupt(data, state);
+ }
if (ret < 0) {
bmc150_accel_set_power_state(data, false);
mutex_unlock(&data->mutex);