Merge tag 'iio-for-3.19a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, features and cleanups for IIO in the 3.19 cycle.

New drivers / supported parts
* rockchip - rk3066-tsadc variant
* si7020 humidity and temperature sensor
* mcp320x - add mcp3001, mcp3002, mcp3004, mcp3008, mcp3201, mcp3202
* bmp280 pressure and temperature sensor
* Qualcomm SPMI PMIC current ADC driver
* Exynos_adc - support exynos7

New features
* vf610-adc - add temperature sensor support
* Documentation of current attributes, scaled pressure, offset and
  scaled humidity, RGBC intensity gain factor and scale applied to
  differential voltage channels.
* Bring iio_event_monitor up to date with newer modifiers.
* Add of_xlate function to allow for complex channel mappings from the
  device tree.
* Add -g parameter to generic_buffer example to allow for devices with
  directly fed (no trigger) buffers.
* Move exynos driver over to syscon for PMU register access.

Cleanups, fixes for new drivers
* lis3l02dq drop an unneeded else.
* st sensors - renam st_sensors to st_sensor_settings (for clarity)
* st sensors - drop an unused parameter from all the probe utility
  functions.
* vf610 better error handling and tidy up.
* si7020 - cleanups following merge
* as3935 - drop some unnecessary semicolons.
* bmp280 - fix the pressure calculation.

3 files changed, 70 insertions, 58 deletions

diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
index 24cfe4e044f9..edd13d2b4121 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.c
+++ b/drivers/iio/common/st_sensors/st_sensors_core.c
@@ -44,18 +44,18 @@ st_sensors_write_data_with_mask_error:
 	return err;
 }
 
-static int st_sensors_match_odr(struct st_sensors *sensor,
+static int st_sensors_match_odr(struct st_sensor_settings *sensor_settings,
 			unsigned int odr, struct st_sensor_odr_avl *odr_out)
 {
 	int i, ret = -EINVAL;
 
 	for (i = 0; i < ST_SENSORS_ODR_LIST_MAX; i++) {
-		if (sensor->odr.odr_avl[i].hz == 0)
+		if (sensor_settings->odr.odr_avl[i].hz == 0)
 			goto st_sensors_match_odr_error;
 
-		if (sensor->odr.odr_avl[i].hz == odr) {
-			odr_out->hz = sensor->odr.odr_avl[i].hz;
-			odr_out->value = sensor->odr.odr_avl[i].value;
+		if (sensor_settings->odr.odr_avl[i].hz == odr) {
+			odr_out->hz = sensor_settings->odr.odr_avl[i].hz;
+			odr_out->value = sensor_settings->odr.odr_avl[i].value;
 			ret = 0;
 			break;
 		}
@@ -71,23 +71,26 @@ int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
 	struct st_sensor_odr_avl odr_out = {0, 0};
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	err = st_sensors_match_odr(sdata->sensor, odr, &odr_out);
+	err = st_sensors_match_odr(sdata->sensor_settings, odr, &odr_out);
 	if (err < 0)
 		goto st_sensors_match_odr_error;
 
-	if ((sdata->sensor->odr.addr == sdata->sensor->pw.addr) &&
-			(sdata->sensor->odr.mask == sdata->sensor->pw.mask)) {
+	if ((sdata->sensor_settings->odr.addr ==
+					sdata->sensor_settings->pw.addr) &&
+				(sdata->sensor_settings->odr.mask ==
+					sdata->sensor_settings->pw.mask)) {
 		if (sdata->enabled == true) {
 			err = st_sensors_write_data_with_mask(indio_dev,
-				sdata->sensor->odr.addr,
-				sdata->sensor->odr.mask,
+				sdata->sensor_settings->odr.addr,
+				sdata->sensor_settings->odr.mask,
 				odr_out.value);
 		} else {
 			err = 0;
 		}
 	} else {
 		err = st_sensors_write_data_with_mask(indio_dev,
-			sdata->sensor->odr.addr, sdata->sensor->odr.mask,
+			sdata->sensor_settings->odr.addr,
+			sdata->sensor_settings->odr.mask,
 			odr_out.value);
 	}
 	if (err >= 0)
@@ -98,16 +101,16 @@ st_sensors_match_odr_error:
 }
 EXPORT_SYMBOL(st_sensors_set_odr);
 
-static int st_sensors_match_fs(struct st_sensors *sensor,
+static int st_sensors_match_fs(struct st_sensor_settings *sensor_settings,
 					unsigned int fs, int *index_fs_avl)
 {
 	int i, ret = -EINVAL;
 
 	for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
-		if (sensor->fs.fs_avl[i].num == 0)
+		if (sensor_settings->fs.fs_avl[i].num == 0)
 			goto st_sensors_match_odr_error;
 
-		if (sensor->fs.fs_avl[i].num == fs) {
+		if (sensor_settings->fs.fs_avl[i].num == fs) {
 			*index_fs_avl = i;
 			ret = 0;
 			break;
@@ -118,25 +121,24 @@ st_sensors_match_odr_error:
 	return ret;
 }
 
-static int st_sensors_set_fullscale(struct iio_dev *indio_dev,
-								unsigned int fs)
+static int st_sensors_set_fullscale(struct iio_dev *indio_dev, unsigned int fs)
 {
 	int err, i = 0;
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	err = st_sensors_match_fs(sdata->sensor, fs, &i);
+	err = st_sensors_match_fs(sdata->sensor_settings, fs, &i);
 	if (err < 0)
 		goto st_accel_set_fullscale_error;
 
 	err = st_sensors_write_data_with_mask(indio_dev,
-				sdata->sensor->fs.addr,
-				sdata->sensor->fs.mask,
-				sdata->sensor->fs.fs_avl[i].value);
+				sdata->sensor_settings->fs.addr,
+				sdata->sensor_settings->fs.mask,
+				sdata->sensor_settings->fs.fs_avl[i].value);
 	if (err < 0)
 		goto st_accel_set_fullscale_error;
 
 	sdata->current_fullscale = (struct st_sensor_fullscale_avl *)
-						&sdata->sensor->fs.fs_avl[i];
+					&sdata->sensor_settings->fs.fs_avl[i];
 	return err;
 
 st_accel_set_fullscale_error:
@@ -153,10 +155,12 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
 	if (enable) {
-		tmp_value = sdata->sensor->pw.value_on;
-		if ((sdata->sensor->odr.addr == sdata->sensor->pw.addr) &&
-			(sdata->sensor->odr.mask == sdata->sensor->pw.mask)) {
-			err = st_sensors_match_odr(sdata->sensor,
+		tmp_value = sdata->sensor_settings->pw.value_on;
+		if ((sdata->sensor_settings->odr.addr ==
+					sdata->sensor_settings->pw.addr) &&
+				(sdata->sensor_settings->odr.mask ==
+					sdata->sensor_settings->pw.mask)) {
+			err = st_sensors_match_odr(sdata->sensor_settings,
 							sdata->odr, &odr_out);
 			if (err < 0)
 				goto set_enable_error;
@@ -164,8 +168,8 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
 			found = true;
 		}
 		err = st_sensors_write_data_with_mask(indio_dev,
-				sdata->sensor->pw.addr,
-				sdata->sensor->pw.mask, tmp_value);
+				sdata->sensor_settings->pw.addr,
+				sdata->sensor_settings->pw.mask, tmp_value);
 		if (err < 0)
 			goto set_enable_error;
 
@@ -175,9 +179,9 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
 			sdata->odr = odr_out.hz;
 	} else {
 		err = st_sensors_write_data_with_mask(indio_dev,
-				sdata->sensor->pw.addr,
-				sdata->sensor->pw.mask,
-				sdata->sensor->pw.value_off);
+				sdata->sensor_settings->pw.addr,
+				sdata->sensor_settings->pw.mask,
+				sdata->sensor_settings->pw.value_off);
 		if (err < 0)
 			goto set_enable_error;
 
@@ -194,8 +198,9 @@ int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable)
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
 	return st_sensors_write_data_with_mask(indio_dev,
-				sdata->sensor->enable_axis.addr,
-				sdata->sensor->enable_axis.mask, axis_enable);
+				sdata->sensor_settings->enable_axis.addr,
+				sdata->sensor_settings->enable_axis.mask,
+				axis_enable);
 }
 EXPORT_SYMBOL(st_sensors_set_axis_enable);
 
@@ -236,13 +241,13 @@ void st_sensors_power_disable(struct iio_dev *indio_dev)
 EXPORT_SYMBOL(st_sensors_power_disable);
 
 static int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
-				       struct st_sensors_platform_data *pdata)
+					struct st_sensors_platform_data *pdata)
 {
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
 	switch (pdata->drdy_int_pin) {
 	case 1:
-		if (sdata->sensor->drdy_irq.mask_int1 == 0) {
+		if (sdata->sensor_settings->drdy_irq.mask_int1 == 0) {
 			dev_err(&indio_dev->dev,
 					"DRDY on INT1 not available.\n");
 			return -EINVAL;
@@ -250,7 +255,7 @@ static int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
 		sdata->drdy_int_pin = 1;
 		break;
 	case 2:
-		if (sdata->sensor->drdy_irq.mask_int2 == 0) {
+		if (sdata->sensor_settings->drdy_irq.mask_int2 == 0) {
 			dev_err(&indio_dev->dev,
 					"DRDY on INT2 not available.\n");
 			return -EINVAL;
@@ -318,7 +323,7 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
 
 	if (sdata->current_fullscale) {
 		err = st_sensors_set_fullscale(indio_dev,
-					       sdata->current_fullscale->num);
+						sdata->current_fullscale->num);
 		if (err < 0)
 			return err;
 	} else
@@ -330,7 +335,8 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
 
 	/* set BDU */
 	err = st_sensors_write_data_with_mask(indio_dev,
-			sdata->sensor->bdu.addr, sdata->sensor->bdu.mask, true);
+					sdata->sensor_settings->bdu.addr,
+					sdata->sensor_settings->bdu.mask, true);
 	if (err < 0)
 		return err;
 
@@ -346,26 +352,28 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
 	u8 drdy_mask;
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	if (!sdata->sensor->drdy_irq.addr)
+	if (!sdata->sensor_settings->drdy_irq.addr)
 		return 0;
 
 	/* Enable/Disable the interrupt generator 1. */
-	if (sdata->sensor->drdy_irq.ig1.en_addr > 0) {
+	if (sdata->sensor_settings->drdy_irq.ig1.en_addr > 0) {
 		err = st_sensors_write_data_with_mask(indio_dev,
-			sdata->sensor->drdy_irq.ig1.en_addr,
-			sdata->sensor->drdy_irq.ig1.en_mask, (int)enable);
+				sdata->sensor_settings->drdy_irq.ig1.en_addr,
+				sdata->sensor_settings->drdy_irq.ig1.en_mask,
+				(int)enable);
 		if (err < 0)
 			goto st_accel_set_dataready_irq_error;
 	}
 
 	if (sdata->drdy_int_pin == 1)
-		drdy_mask = sdata->sensor->drdy_irq.mask_int1;
+		drdy_mask = sdata->sensor_settings->drdy_irq.mask_int1;
 	else
-		drdy_mask = sdata->sensor->drdy_irq.mask_int2;
+		drdy_mask = sdata->sensor_settings->drdy_irq.mask_int2;
 
 	/* Enable/Disable the interrupt generator for data ready. */
 	err = st_sensors_write_data_with_mask(indio_dev,
-			sdata->sensor->drdy_irq.addr, drdy_mask, (int)enable);
+					sdata->sensor_settings->drdy_irq.addr,
+					drdy_mask, (int)enable);
 
 st_accel_set_dataready_irq_error:
 	return err;
@@ -378,8 +386,8 @@ int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale)
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
 	for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
-		if ((sdata->sensor->fs.fs_avl[i].gain == scale) &&
-				(sdata->sensor->fs.fs_avl[i].gain != 0)) {
+		if ((sdata->sensor_settings->fs.fs_avl[i].gain == scale) &&
+				(sdata->sensor_settings->fs.fs_avl[i].gain != 0)) {
 			err = 0;
 			break;
 		}
@@ -388,7 +396,7 @@ int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale)
 		goto st_sensors_match_scale_error;
 
 	err = st_sensors_set_fullscale(indio_dev,
-					sdata->sensor->fs.fs_avl[i].num);
+				sdata->sensor_settings->fs.fs_avl[i].num);
 
 st_sensors_match_scale_error:
 	return err;
@@ -439,7 +447,7 @@ int st_sensors_read_info_raw(struct iio_dev *indio_dev,
 		if (err < 0)
 			goto out;
 
-		msleep((sdata->sensor->bootime * 1000) / sdata->odr);
+		msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
 		err = st_sensors_read_axis_data(indio_dev, ch, val);
 		if (err < 0)
 			goto out;
@@ -456,7 +464,8 @@ out:
 EXPORT_SYMBOL(st_sensors_read_info_raw);
 
 int st_sensors_check_device_support(struct iio_dev *indio_dev,
-			int num_sensors_list, const struct st_sensors *sensors)
+			int num_sensors_list,
+			const struct st_sensor_settings *sensor_settings)
 {
 	u8 wai;
 	int i, n, err;
@@ -470,23 +479,24 @@ int st_sensors_check_device_support(struct iio_dev *indio_dev,
 	}
 
 	for (i = 0; i < num_sensors_list; i++) {
-		if (sensors[i].wai == wai)
+		if (sensor_settings[i].wai == wai)
 			break;
 	}
 	if (i == num_sensors_list)
 		goto device_not_supported;
 
-	for (n = 0; n < ARRAY_SIZE(sensors[i].sensors_supported); n++) {
+	for (n = 0; n < ARRAY_SIZE(sensor_settings[i].sensors_supported); n++) {
 		if (strcmp(indio_dev->name,
-				&sensors[i].sensors_supported[n][0]) == 0)
+				&sensor_settings[i].sensors_supported[n][0]) == 0)
 			break;
 	}
-	if (n == ARRAY_SIZE(sensors[i].sensors_supported)) {
+	if (n == ARRAY_SIZE(sensor_settings[i].sensors_supported)) {
 		dev_err(&indio_dev->dev, "device name and WhoAmI mismatch.\n");
 		goto sensor_name_mismatch;
 	}
 
-	sdata->sensor = (struct st_sensors *)&sensors[i];
+	sdata->sensor_settings =
+			(struct st_sensor_settings *)&sensor_settings[i];
 
 	return i;
 
@@ -508,11 +518,11 @@ ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
 
 	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_ODR_LIST_MAX; i++) {
-		if (sdata->sensor->odr.odr_avl[i].hz == 0)
+		if (sdata->sensor_settings->odr.odr_avl[i].hz == 0)
 			break;
 
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-					sdata->sensor->odr.odr_avl[i].hz);
+				sdata->sensor_settings->odr.odr_avl[i].hz);
 	}
 	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
@@ -530,11 +540,11 @@ ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
 
 	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
-		if (sdata->sensor->fs.fs_avl[i].num == 0)
+		if (sdata->sensor_settings->fs.fs_avl[i].num == 0)
 			break;
 
 		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
-					sdata->sensor->fs.fs_avl[i].gain);
+				sdata->sensor_settings->fs.fs_avl[i].gain);
 	}
 	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c
index bb6f3085f57b..98cfee296d46 100644
--- a/drivers/iio/common/st_sensors/st_sensors_i2c.c
+++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c
@@ -72,6 +72,7 @@ void st_sensors_i2c_configure(struct iio_dev *indio_dev,
 	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = client->name;
 
+	sdata->dev = &client->dev;
 	sdata->tf = &st_sensors_tf_i2c;
 	sdata->get_irq_data_ready = st_sensors_i2c_get_irq;
 }
diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
index 251baf6abc25..78a6a1ab3ece 100644
--- a/drivers/iio/common/st_sensors/st_sensors_spi.c
+++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
@@ -111,6 +111,7 @@ void st_sensors_spi_configure(struct iio_dev *indio_dev,
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi->modalias;
 
+	sdata->dev = &spi->dev;
 	sdata->tf = &st_sensors_tf_spi;
 	sdata->get_irq_data_ready = st_sensors_spi_get_irq;
 }