diff mbox series

[10/13] iio: cros_ec: Use triggered buffer only when EC does not support FIFO

Message ID 20190922175021.53449-11-gwendal@chromium.org (mailing list archive)
State New, archived
Headers show
Series cros_ec: Add sensorhub driver and FIFO processing | expand

Commit Message

Gwendal Grignou Sept. 22, 2019, 5:50 p.m. UTC 
When EC supports FIFO, the samples will flow from the kernel by
themselves.
When no FIFO, the user space app needs to call trigger_new, or better
register a high precision timer.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
 drivers/iio/accel/cros_ec_accel_legacy.c      |  8 +--
 .../cros_ec_sensors/cros_ec_lid_angle.c       |  2 +-
 .../common/cros_ec_sensors/cros_ec_sensors.c  |  8 +--
 .../cros_ec_sensors/cros_ec_sensors_core.c    | 61 +++++++++++++++++--
 drivers/iio/light/cros_ec_light_prox.c        |  8 +--
 drivers/iio/pressure/cros_ec_baro.c           |  8 +--
 .../linux/iio/common/cros_ec_sensors_core.h   | 16 ++++-
 7 files changed, 80 insertions(+), 31 deletions(-)

Comments

Jonathan Cameron Oct. 5, 2019, 4:30 p.m. UTC | #1 
On Sun, 22 Sep 2019 10:50:18 -0700
Gwendal Grignou <gwendal@chromium.org> wrote:

> When EC supports FIFO, the samples will flow from the kernel by
> themselves.
> When no FIFO, the user space app needs to call trigger_new, or better
> register a high precision timer.
> 
> Signed-off-by: Gwendal Grignou <gwendal@chromium.org>

Trivial comments inline.

> ---
>  drivers/iio/accel/cros_ec_accel_legacy.c      |  8 +--
>  .../cros_ec_sensors/cros_ec_lid_angle.c       |  2 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |  8 +--
>  .../cros_ec_sensors/cros_ec_sensors_core.c    | 61 +++++++++++++++++--
>  drivers/iio/light/cros_ec_light_prox.c        |  8 +--
>  drivers/iio/pressure/cros_ec_baro.c           |  8 +--
>  .../linux/iio/common/cros_ec_sensors_core.h   | 16 ++++-
>  7 files changed, 80 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
> index 591c0d962c44..d607fbc52c95 100644
> --- a/drivers/iio/accel/cros_ec_accel_legacy.c
> +++ b/drivers/iio/accel/cros_ec_accel_legacy.c
> @@ -179,7 +179,8 @@ static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
>  	if (!indio_dev)
>  		return -ENOMEM;
>  
> -	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
> +	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
> +			cros_ec_sensors_capture, cros_ec_sensors_push_data);
>  	if (ret)
>  		return ret;
>  
> @@ -199,11 +200,6 @@ static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
>  		state->sign[CROS_EC_SENSOR_Z] = -1;
>  	}
>  
> -	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
> -			cros_ec_sensors_capture, NULL);
> -	if (ret)
> -		return ret;
> -
>  	return devm_iio_device_register(dev, indio_dev);
>  }
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
> index 1dcc2a16ab2d..e30a59fcf0f9 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
> @@ -97,7 +97,7 @@ static int cros_ec_lid_angle_probe(struct platform_device *pdev)
>  	if (!indio_dev)
>  		return -ENOMEM;
>  
> -	ret = cros_ec_sensors_core_init(pdev, indio_dev, false);
> +	ret = cros_ec_sensors_core_init(pdev, indio_dev, false, NULL, NULL);
>  	if (ret)
>  		return ret;
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> index a88dd8deade9..b78a942ac8e5 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> @@ -239,7 +239,8 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
>  	if (!indio_dev)
>  		return -ENOMEM;
>  
> -	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
> +	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
> +			cros_ec_sensors_capture, cros_ec_sensors_push_data);
>  	if (ret)
>  		return ret;
>  
> @@ -301,11 +302,6 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
>  	else
>  		state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
>  
> -	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
> -			cros_ec_sensors_capture, NULL);
> -	if (ret)
> -		return ret;
> -
>  	return devm_iio_device_register(dev, indio_dev);
>  }
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> index 43eb1d42820e..c4c37c6df301 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> @@ -12,6 +12,7 @@
>  #include <linux/iio/iio.h>
>  #include <linux/iio/kfifo_buf.h>
>  #include <linux/iio/trigger_consumer.h>
> +#include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
>  #include <linux/module.h>
> @@ -83,15 +84,50 @@ static void get_default_min_max_freq(enum motionsensor_type type,
>  	}
>  }
>  
> +int cros_ec_sensors_push_data(
> +		struct iio_dev *indio_dev,
> +		s16 *data,
> +		s64 timestamp)
> +{
> +	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
> +	s16 *out;
> +	unsigned int i;
> +
> +	/*
> +	 * It can happen if we get a samples before the iio device is fully
> +	 * registered.
> +	 */
> +	if (!st)
> +		return 0;
> +
> +	/* Ignore samples if the buffer is not set. */
> +	if (!indio_dev->active_scan_mask)

Odd test.  That tests if the core has created the bitmask.
Is the intent to check if any bits are enabled?

> +		return 0;
> +
> +	out = (s16 *)st->samples;
> +	for_each_set_bit(i,
> +			 indio_dev->active_scan_mask,
> +			 indio_dev->masklength) {
> +		*out = data[i];
> +		out++;
> +	}

blank line.

> +	iio_push_to_buffers_with_timestamp(indio_dev, st->samples, timestamp);

blank line.

> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(cros_ec_sensors_push_data);
> +
>  int cros_ec_sensors_core_init(struct platform_device *pdev,
>  			      struct iio_dev *indio_dev,
> -			      bool physical_device)
> +			      bool physical_device,
> +			      cros_ec_sensors_capture_t trigger_capture,
> +			      cros_ec_sensorhub_push_data_cb_t push_data)
>  {
>  	struct device *dev = &pdev->dev;
>  	struct cros_ec_sensors_core_state *state = iio_priv(indio_dev);
>  	struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent);
>  	struct cros_ec_dev *ec = sensor_hub->ec;
>  	struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev);
> +	struct iio_buffer *buffer;
>  	u32 ver_mask;
>  	int ret, i;
>  
> @@ -124,8 +160,6 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
>  	indio_dev->name = pdev->name;
>  
>  	if (physical_device) {
> -		indio_dev->modes = INDIO_DIRECT_MODE;
> -
>  		state->param.cmd = MOTIONSENSE_CMD_INFO;
>  		state->param.info.sensor_num = sensor_platform->sensor_num;
>  		ret = cros_ec_motion_send_host_cmd(state, 0);
> @@ -154,9 +188,26 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
>  			state->frequencies[2] =
>  			    state->resp->info_3.max_frequency;
>  		}
> -	}
>  
> -	return 0;
> +		if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
> +			buffer = devm_iio_kfifo_allocate(dev);
> +			if (!buffer)
> +				return -ENOMEM;
> +
> +			iio_device_attach_buffer(indio_dev, buffer);
> +			indio_dev->modes = INDIO_BUFFER_SOFTWARE;
> +			ret = cros_ec_sensorhub_register_push_data(
> +					sensor_hub,
> +					sensor_platform->sensor_num,
> +					indio_dev, push_data);
> +		} else {
> +			indio_dev->modes = INDIO_DIRECT_MODE;
> +			ret = devm_iio_triggered_buffer_setup(
> +					dev, indio_dev, NULL,
> +					trigger_capture, NULL);
> +		}
> +	}
> +	return ret;
>  }
>  EXPORT_SYMBOL_GPL(cros_ec_sensors_core_init);
>  
> diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
> index c431e4d1482d..d58f010880ce 100644
> --- a/drivers/iio/light/cros_ec_light_prox.c
> +++ b/drivers/iio/light/cros_ec_light_prox.c
> @@ -186,7 +186,8 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev)
>  	if (!indio_dev)
>  		return -ENOMEM;
>  
> -	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
> +	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
> +			cros_ec_sensors_capture, cros_ec_sensors_push_data);
>  	if (ret)
>  		return ret;
>  
> @@ -245,11 +246,6 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev)
>  
>  	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
>  
> -	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
> -					      cros_ec_sensors_capture, NULL);
> -	if (ret)
> -		return ret;
> -
>  	return devm_iio_device_register(dev, indio_dev);
>  }
>  
> diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
> index 2f4d6d3ab41d..c7538e93d24f 100644
> --- a/drivers/iio/pressure/cros_ec_baro.c
> +++ b/drivers/iio/pressure/cros_ec_baro.c
> @@ -134,7 +134,8 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
>  	if (!indio_dev)
>  		return -ENOMEM;
>  
> -	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
> +	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
> +			cros_ec_sensors_capture, cros_ec_sensors_push_data);
>  	if (ret)
>  		return ret;
>  
> @@ -180,11 +181,6 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
>  
>  	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
>  
> -	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
> -					      cros_ec_sensors_capture, NULL);
> -	if (ret)
> -		return ret;
> -
>  	return devm_iio_device_register(dev, indio_dev);
>  }
>  
> diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
> index abef66d0e884..60f78f0e4884 100644
> --- a/include/linux/iio/common/cros_ec_sensors_core.h
> +++ b/include/linux/iio/common/cros_ec_sensors_core.h
> @@ -12,6 +12,7 @@
>  #include <linux/irqreturn.h>
>  #include <linux/platform_data/cros_ec_commands.h>
>  #include <linux/platform_data/cros_ec_proto.h>
> +#include <linux/platform_data/cros_ec_sensorhub.h>
>  
>  enum {
>  	CROS_EC_SENSOR_X,
> @@ -32,6 +33,9 @@ enum {
>  /* Minimum sampling period to use when device is suspending */
>  #define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000  /* 1 second */
>  
> +typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p);
> +
> +
>  /**
>   * struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
>   * @ec:				cros EC device structure
> @@ -110,11 +114,17 @@ struct platform_device;
>   * @pdev:		platform device created for the sensors
>   * @indio_dev:		iio device structure of the device
>   * @physical_device:	true if the device refers to a physical device
> + * @trigger_capture:    function pointer to call buffer is triggered,
> + *    for backward compatibility.
> + * @push_data:          function to call when cros_ec_sensorhub receives
> + *    a sample for that sensor.
>   *
>   * Return: 0 on success, -errno on failure.
>   */
>  int cros_ec_sensors_core_init(struct platform_device *pdev,
> -			      struct iio_dev *indio_dev, bool physical_device);
> +			      struct iio_dev *indio_dev, bool physical_device,
> +			      cros_ec_sensors_capture_t trigger_capture,
> +			      cros_ec_sensorhub_push_data_cb_t push_data);
>  
>  /* To remove association of physical device to cros_ec_sensorhub. */
>  int cros_ec_sensors_core_clean(struct platform_device *pdev);
> @@ -132,6 +142,10 @@ int cros_ec_sensors_core_clean(struct platform_device *pdev);
>   * Return: IRQ_HANDLED
>   */
>  irqreturn_t cros_ec_sensors_capture(int irq, void *p);
> +int cros_ec_sensors_push_data(
> +		struct iio_dev *indio_dev,
> +		s16 *data,
> +		s64 timestamp);
>  
>  /**
>   * cros_ec_motion_send_host_cmd() - send motion sense host command
diff mbox series

Patch

diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
index 591c0d962c44..d607fbc52c95 100644
--- a/drivers/iio/accel/cros_ec_accel_legacy.c
+++ b/drivers/iio/accel/cros_ec_accel_legacy.c
@@ -179,7 +179,8 @@  static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+			cros_ec_sensors_capture, cros_ec_sensors_push_data);
 	if (ret)
 		return ret;
 
@@ -199,11 +200,6 @@  static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
 		state->sign[CROS_EC_SENSOR_Z] = -1;
 	}
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-			cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
 	return devm_iio_device_register(dev, indio_dev);
 }
 
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
index 1dcc2a16ab2d..e30a59fcf0f9 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
@@ -97,7 +97,7 @@  static int cros_ec_lid_angle_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, false);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, false, NULL, NULL);
 	if (ret)
 		return ret;
 
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
index a88dd8deade9..b78a942ac8e5 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
@@ -239,7 +239,8 @@  static int cros_ec_sensors_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+			cros_ec_sensors_capture, cros_ec_sensors_push_data);
 	if (ret)
 		return ret;
 
@@ -301,11 +302,6 @@  static int cros_ec_sensors_probe(struct platform_device *pdev)
 	else
 		state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-			cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
 	return devm_iio_device_register(dev, indio_dev);
 }
 
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index 43eb1d42820e..c4c37c6df301 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -12,6 +12,7 @@ 
 #include <linux/iio/iio.h>
 #include <linux/iio/kfifo_buf.h>
 #include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
 #include <linux/module.h>
@@ -83,15 +84,50 @@  static void get_default_min_max_freq(enum motionsensor_type type,
 	}
 }
 
+int cros_ec_sensors_push_data(
+		struct iio_dev *indio_dev,
+		s16 *data,
+		s64 timestamp)
+{
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	s16 *out;
+	unsigned int i;
+
+	/*
+	 * It can happen if we get a samples before the iio device is fully
+	 * registered.
+	 */
+	if (!st)
+		return 0;
+
+	/* Ignore samples if the buffer is not set. */
+	if (!indio_dev->active_scan_mask)
+		return 0;
+
+	out = (s16 *)st->samples;
+	for_each_set_bit(i,
+			 indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		*out = data[i];
+		out++;
+	}
+	iio_push_to_buffers_with_timestamp(indio_dev, st->samples, timestamp);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(cros_ec_sensors_push_data);
+
 int cros_ec_sensors_core_init(struct platform_device *pdev,
 			      struct iio_dev *indio_dev,
-			      bool physical_device)
+			      bool physical_device,
+			      cros_ec_sensors_capture_t trigger_capture,
+			      cros_ec_sensorhub_push_data_cb_t push_data)
 {
 	struct device *dev = &pdev->dev;
 	struct cros_ec_sensors_core_state *state = iio_priv(indio_dev);
 	struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent);
 	struct cros_ec_dev *ec = sensor_hub->ec;
 	struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev);
+	struct iio_buffer *buffer;
 	u32 ver_mask;
 	int ret, i;
 
@@ -124,8 +160,6 @@  int cros_ec_sensors_core_init(struct platform_device *pdev,
 	indio_dev->name = pdev->name;
 
 	if (physical_device) {
-		indio_dev->modes = INDIO_DIRECT_MODE;
-
 		state->param.cmd = MOTIONSENSE_CMD_INFO;
 		state->param.info.sensor_num = sensor_platform->sensor_num;
 		ret = cros_ec_motion_send_host_cmd(state, 0);
@@ -154,9 +188,26 @@  int cros_ec_sensors_core_init(struct platform_device *pdev,
 			state->frequencies[2] =
 			    state->resp->info_3.max_frequency;
 		}
-	}
 
-	return 0;
+		if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
+			buffer = devm_iio_kfifo_allocate(dev);
+			if (!buffer)
+				return -ENOMEM;
+
+			iio_device_attach_buffer(indio_dev, buffer);
+			indio_dev->modes = INDIO_BUFFER_SOFTWARE;
+			ret = cros_ec_sensorhub_register_push_data(
+					sensor_hub,
+					sensor_platform->sensor_num,
+					indio_dev, push_data);
+		} else {
+			indio_dev->modes = INDIO_DIRECT_MODE;
+			ret = devm_iio_triggered_buffer_setup(
+					dev, indio_dev, NULL,
+					trigger_capture, NULL);
+		}
+	}
+	return ret;
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_core_init);
 
diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
index c431e4d1482d..d58f010880ce 100644
--- a/drivers/iio/light/cros_ec_light_prox.c
+++ b/drivers/iio/light/cros_ec_light_prox.c
@@ -186,7 +186,8 @@  static int cros_ec_light_prox_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+			cros_ec_sensors_capture, cros_ec_sensors_push_data);
 	if (ret)
 		return ret;
 
@@ -245,11 +246,6 @@  static int cros_ec_light_prox_probe(struct platform_device *pdev)
 
 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-					      cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
 	return devm_iio_device_register(dev, indio_dev);
 }
 
diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
index 2f4d6d3ab41d..c7538e93d24f 100644
--- a/drivers/iio/pressure/cros_ec_baro.c
+++ b/drivers/iio/pressure/cros_ec_baro.c
@@ -134,7 +134,8 @@  static int cros_ec_baro_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+			cros_ec_sensors_capture, cros_ec_sensors_push_data);
 	if (ret)
 		return ret;
 
@@ -180,11 +181,6 @@  static int cros_ec_baro_probe(struct platform_device *pdev)
 
 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-					      cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
 	return devm_iio_device_register(dev, indio_dev);
 }
 
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index abef66d0e884..60f78f0e4884 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -12,6 +12,7 @@ 
 #include <linux/irqreturn.h>
 #include <linux/platform_data/cros_ec_commands.h>
 #include <linux/platform_data/cros_ec_proto.h>
+#include <linux/platform_data/cros_ec_sensorhub.h>
 
 enum {
 	CROS_EC_SENSOR_X,
@@ -32,6 +33,9 @@  enum {
 /* Minimum sampling period to use when device is suspending */
 #define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000  /* 1 second */
 
+typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p);
+
+
 /**
  * struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
  * @ec:				cros EC device structure
@@ -110,11 +114,17 @@  struct platform_device;
  * @pdev:		platform device created for the sensors
  * @indio_dev:		iio device structure of the device
  * @physical_device:	true if the device refers to a physical device
+ * @trigger_capture:    function pointer to call buffer is triggered,
+ *    for backward compatibility.
+ * @push_data:          function to call when cros_ec_sensorhub receives
+ *    a sample for that sensor.
  *
  * Return: 0 on success, -errno on failure.
  */
 int cros_ec_sensors_core_init(struct platform_device *pdev,
-			      struct iio_dev *indio_dev, bool physical_device);
+			      struct iio_dev *indio_dev, bool physical_device,
+			      cros_ec_sensors_capture_t trigger_capture,
+			      cros_ec_sensorhub_push_data_cb_t push_data);
 
 /* To remove association of physical device to cros_ec_sensorhub. */
 int cros_ec_sensors_core_clean(struct platform_device *pdev);
@@ -132,6 +142,10 @@  int cros_ec_sensors_core_clean(struct platform_device *pdev);
  * Return: IRQ_HANDLED
  */
 irqreturn_t cros_ec_sensors_capture(int irq, void *p);
+int cros_ec_sensors_push_data(
+		struct iio_dev *indio_dev,
+		s16 *data,
+		s64 timestamp);
 
 /**
  * cros_ec_motion_send_host_cmd() - send motion sense host command