Merge tag 'iio-fixes-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First set of IIO and counter fixes for the 5.11 cycle.

Counter fixes

ti,eqep
- Remove floor interface as the device always wraps to 0.

IIO

adi,ad5504
- Fix inverted power state control.
bosch,bma255
- Fix a difference in part naming between dt-binding doc and the driver.
melexis,mlx90632
- Add a delay after reset command.
semtech,sx9310
- Off by one error.
- Fix an issue due to need to skip a value in a power of 2 series.
st,st_sensors
- Fix a possible infinite loop if data read is not define or reading it fails.
ti,am335x
- Remove a left over iio_kfifo_free after managed allocation conversion.

* tag 'iio-fixes-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: sx9310: Fix semtech,avg-pos-strength setting when > 16
  iio: common: st_sensors: fix possible infinite loop in st_sensors_irq_thread
  iio: ad5504: Fix setting power-down state
  counter:ti-eqep: remove floor
  drivers: iio: temperature: Add delay after the addressed reset command in mlx90632.c
  iio: adc: ti_am335x_adc: remove omitted iio_kfifo_free()
  dt-bindings: iio: accel: bma255: Fix bmc150/bmi055 compatible
  iio: sx9310: Off by one in sx9310_read_thresh()

Author: gregkh

Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml

@@ -16,8 +16,8 @@ description:
 properties:
   compatible:
     enum:
-      - bosch,bmc150
-      - bosch,bmi055
+      - bosch,bmc150_accel
+      - bosch,bmi055_accel
       - bosch,bma255
       - bosch,bma250e
       - bosch,bma222

drivers/counter/ti-eqep.c

@@ -235,36 +235,6 @@ static ssize_t ti_eqep_position_ceiling_write(struct counter_device *counter,
 	return len;
 }
 
-static ssize_t ti_eqep_position_floor_read(struct counter_device *counter,
-					   struct counter_count *count,
-					   void *ext_priv, char *buf)
-{
-	struct ti_eqep_cnt *priv = counter->priv;
-	u32 qposinit;
-
-	regmap_read(priv->regmap32, QPOSINIT, &qposinit);
-
-	return sprintf(buf, "%u\n", qposinit);
-}
-
-static ssize_t ti_eqep_position_floor_write(struct counter_device *counter,
-					    struct counter_count *count,
-					    void *ext_priv, const char *buf,
-					    size_t len)
-{
-	struct ti_eqep_cnt *priv = counter->priv;
-	int err;
-	u32 res;
-
-	err = kstrtouint(buf, 0, &res);
-	if (err < 0)
-		return err;
-
-	regmap_write(priv->regmap32, QPOSINIT, res);
-
-	return len;
-}
-
 static ssize_t ti_eqep_position_enable_read(struct counter_device *counter,
 					    struct counter_count *count,
 					    void *ext_priv, char *buf)
@@ -301,11 +271,6 @@ static struct counter_count_ext ti_eqep_position_ext[] = {
 		.read	= ti_eqep_position_ceiling_read,
 		.write	= ti_eqep_position_ceiling_write,
 	},
-	{
-		.name	= "floor",
-		.read	= ti_eqep_position_floor_read,
-		.write	= ti_eqep_position_floor_write,
-	},
 	{
 		.name	= "enable",
 		.read	= ti_eqep_position_enable_read,

drivers/iio/adc/ti_am335x_adc.c

@@ -397,16 +397,12 @@ static int tiadc_iio_buffered_hardware_setup(struct device *dev,
 	ret = devm_request_threaded_irq(dev, irq, pollfunc_th, pollfunc_bh,
 				flags, indio_dev->name, indio_dev);
 	if (ret)
-		goto error_kfifo_free;
+		return ret;
 
 	indio_dev->setup_ops = setup_ops;
 	indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
 
 	return 0;
-
-error_kfifo_free:
-	iio_kfifo_free(indio_dev->buffer);
-	return ret;
 }
 
 static const char * const chan_name_ain[] = {

drivers/iio/common/st_sensors/st_sensors_trigger.c

@@ -23,35 +23,31 @@
  * @sdata: Sensor data.
  *
  * returns:
- * 0 - no new samples available
- * 1 - new samples available
- * negative - error or unknown
+ * false - no new samples available or read error
+ * true - new samples available
  */
-static int st_sensors_new_samples_available(struct iio_dev *indio_dev,
-					    struct st_sensor_data *sdata)
+static bool st_sensors_new_samples_available(struct iio_dev *indio_dev,
+					     struct st_sensor_data *sdata)
 {
 	int ret, status;
 
 	/* How would I know if I can't check it? */
 	if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr)
-		return -EINVAL;
+		return true;
 
 	/* No scan mask, no interrupt */
 	if (!indio_dev->active_scan_mask)
-		return 0;
+		return false;
 
 	ret = regmap_read(sdata->regmap,
 			  sdata->sensor_settings->drdy_irq.stat_drdy.addr,
 			  &status);
 	if (ret < 0) {
 		dev_err(sdata->dev, "error checking samples available\n");
-		return ret;
+		return false;
 	}
 
-	if (status & sdata->sensor_settings->drdy_irq.stat_drdy.mask)
-		return 1;
-
-	return 0;
+	return !!(status & sdata->sensor_settings->drdy_irq.stat_drdy.mask);
 }
 
 /**
@@ -180,16 +176,23 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 
 	/* Tell the interrupt handler that we're dealing with edges */
 	if (irq_trig == IRQF_TRIGGER_FALLING ||
-	    irq_trig == IRQF_TRIGGER_RISING)
+	    irq_trig == IRQF_TRIGGER_RISING) {
+		if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr) {
+			dev_err(&indio_dev->dev,
+				"edge IRQ not supported w/o stat register.\n");
+			err = -EOPNOTSUPP;
+			goto iio_trigger_free;
+		}
 		sdata->edge_irq = true;
-	else
+	} else {
 		/*
 		 * If we're not using edges (i.e. level interrupts) we
 		 * just mask off the IRQ, handle one interrupt, then
 		 * if the line is still low, we return to the
 		 * interrupt handler top half again and start over.
 		 */
 		irq_trig |= IRQF_ONESHOT;
+	}
 
 	/*
 	 * If the interrupt pin is Open Drain, by definition this

drivers/iio/dac/ad5504.c

@@ -187,9 +187,9 @@ static ssize_t ad5504_write_dac_powerdown(struct iio_dev *indio_dev,
 		return ret;
 
 	if (pwr_down)
-		st->pwr_down_mask |= (1 << chan->channel);
-	else
 		st->pwr_down_mask &= ~(1 << chan->channel);
+	else
+		st->pwr_down_mask |= (1 << chan->channel);
 
 	ret = ad5504_spi_write(st, AD5504_ADDR_CTRL,
 				AD5504_DAC_PWRDWN_MODE(st->pwr_down_mode) |

drivers/iio/proximity/sx9310.c

@@ -601,7 +601,7 @@ static int sx9310_read_thresh(struct sx9310_data *data,
 		return ret;
 
 	regval = FIELD_GET(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval);
-	if (regval > ARRAY_SIZE(sx9310_pthresh_codes))
+	if (regval >= ARRAY_SIZE(sx9310_pthresh_codes))
 		return -EINVAL;
 
 	*val = sx9310_pthresh_codes[regval];
@@ -1305,7 +1305,8 @@ sx9310_get_default_reg(struct sx9310_data *data, int i,
 		if (ret)
 			break;
 
-		pos = min(max(ilog2(pos), 3), 10) - 3;
+		/* Powers of 2, except for a gap between 16 and 64 */
+		pos = clamp(ilog2(pos), 3, 11) - (pos >= 32 ? 4 : 3);
 		reg_def->def &= ~SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK;
 		reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK,
 					   pos);

drivers/iio/temperature/mlx90632.c

@@ -248,6 +248,12 @@ static int mlx90632_set_meas_type(struct regmap *regmap, u8 type)
 	if (ret < 0)
 		return ret;
 
+	/*
+	 * Give the mlx90632 some time to reset properly before sending a new I2C command
+	 * if this is not done, the following I2C command(s) will not be accepted.
+	 */
+	usleep_range(150, 200);
+
 	ret = regmap_write_bits(regmap, MLX90632_REG_CONTROL,
 				 (MLX90632_CFG_MTYP_MASK | MLX90632_CFG_PWR_MASK),
 				 (MLX90632_MTYP_STATUS(type) | MLX90632_PWR_STATUS_HALT));