| Message ID | 20191115093412.144922-3-gwendal@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | cros_ec: Add sensorhub driver and FIFO processing | expand |
On Fri, 15 Nov 2019 01:33:56 -0800 Gwendal Grignou <gwendal@chromium.org> wrote: > Similar to HID sensor stack, the new driver sits between cros_ec_dev > and the iio device drivers: > > EC based iio device topology would be: > iio:device1 -> > ...0/0000:00:1f.0/PNP0C09:00/GOOG0004:00/cros-ec-dev.6.auto/ > cros-ec-sensorhub.7.auto/ > cros-ec-accel.15.auto/ > iio:device1 > > It will be expanded to control EC sensor FIFO. > > Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Looks good to me! Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > Changes in v5: > - Use devm_add_action_or_reset() to free children devices. > In consequence, remove array and define not use for house keeping in > .h file, remove .remove entry point. > - Use PTR_ERR() when needed. > - Use demv_kzalloc for device memory allocation. > Changes in v4: > - Use platform_device_register_data in children registration. > - Free registered pdev children at remove time. > - Remove useless includes > - Check patch with --strict option > Use sizeof(*obj) instead of sizeof(struct ...obj) > Alignement > - Describe cros_ec_sensorhub in kernel-doc format. > Changes in v3: > - Fix doxygen comments > - Fix use of ret |= > - Remove unncessary goto. > Changes in v2: > - Remove unerelated changes. > - Fix spelling. > - Use !x instead of x == NULL > - Use platform_ API directly to register IIO sensors from > cros_ec_sensorhub. > > drivers/iio/common/cros_ec_sensors/Kconfig | 2 +- > drivers/platform/chrome/Kconfig | 12 ++ > drivers/platform/chrome/Makefile | 1 + > drivers/platform/chrome/cros_ec_sensorhub.c | 197 ++++++++++++++++++ > .../linux/platform_data/cros_ec_sensorhub.h | 22 ++ > 5 files changed, 233 insertions(+), 1 deletion(-) > create mode 100644 drivers/platform/chrome/cros_ec_sensorhub.c > create mode 100644 include/linux/platform_data/cros_ec_sensorhub.h > > diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig > index cdbb29cfb907..fefad9572790 100644 > --- a/drivers/iio/common/cros_ec_sensors/Kconfig > +++ b/drivers/iio/common/cros_ec_sensors/Kconfig > @@ -4,7 +4,7 @@ > # > config IIO_CROS_EC_SENSORS_CORE > tristate "ChromeOS EC Sensors Core" > - depends on SYSFS && CROS_EC > + depends on SYSFS && CROS_EC_SENSORHUB > select IIO_BUFFER > select IIO_TRIGGERED_BUFFER > help > diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig > index ee5f08ea57b6..884ac9a287f2 100644 > --- a/drivers/platform/chrome/Kconfig > +++ b/drivers/platform/chrome/Kconfig > @@ -190,6 +190,18 @@ config CROS_EC_DEBUGFS > To compile this driver as a module, choose M here: the > module will be called cros_ec_debugfs. > > +config CROS_EC_SENSORHUB > + tristate "ChromeOS EC MEMS Sensor Hub" > + depends on CROS_EC > + help > + Allow loading IIO sensors. This driver is loaded by MFD and will in > + turn query the EC and register the sensors. > + It also spreads the sensor data coming from the EC to the IIO sensor > + object. > + > + To compile this driver as a module, choose M here: the > + module will be called cros_ec_sensorhub. > + > config CROS_EC_SYSFS > tristate "ChromeOS EC control and information through sysfs" > depends on MFD_CROS_EC_DEV && SYSFS > diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile > index 477ec3d1d1c9..a164c40dc099 100644 > --- a/drivers/platform/chrome/Makefile > +++ b/drivers/platform/chrome/Makefile > @@ -17,6 +17,7 @@ obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o cros_ec_trace.o > obj-$(CONFIG_CROS_KBD_LED_BACKLIGHT) += cros_kbd_led_backlight.o > obj-$(CONFIG_CROS_EC_CHARDEV) += cros_ec_chardev.o > obj-$(CONFIG_CROS_EC_LIGHTBAR) += cros_ec_lightbar.o > +obj-$(CONFIG_CROS_EC_SENSORHUB) += cros_ec_sensorhub.o > obj-$(CONFIG_CROS_EC_VBC) += cros_ec_vbc.o > obj-$(CONFIG_CROS_EC_DEBUGFS) += cros_ec_debugfs.o > obj-$(CONFIG_CROS_EC_SYSFS) += cros_ec_sysfs.o > diff --git a/drivers/platform/chrome/cros_ec_sensorhub.c b/drivers/platform/chrome/cros_ec_sensorhub.c > new file mode 100644 > index 000000000000..85e3d3f25786 > --- /dev/null > +++ b/drivers/platform/chrome/cros_ec_sensorhub.c > @@ -0,0 +1,197 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * SensorHub: driver that discover sensors behind > + * a ChromeOS Embedded controller. > + * > + * Copyright 2019 Google LLC > + */ > + > +#include <linux/init.h> > +#include <linux/device.h> > +#include <linux/module.h> > +#include <linux/mfd/cros_ec.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> > +#include <linux/platform_device.h> > +#include <linux/slab.h> > + > +#define DRV_NAME "cros-ec-sensorhub" > + > +static void cros_ec_sensorhub_free_single_sensor(void *arg) > +{ > + struct platform_device *pdev = arg; > + > + platform_device_unregister(pdev); > +} > + > +static int cros_ec_sensorhub_allocate_single_sensor(struct device *parent, > + char *sensor_name, > + int sensor_num) > +{ > + struct platform_device *pdev; > + struct cros_ec_sensor_platform sensor_platforms = { > + .sensor_num = sensor_num, > + }; > + > + pdev = platform_device_register_data(parent, sensor_name, > + PLATFORM_DEVID_AUTO, > + &sensor_platforms, > + sizeof(sensor_platforms)); > + if (IS_ERR(pdev)) > + return PTR_ERR(pdev); > + > + return devm_add_action_or_reset(parent, > + cros_ec_sensorhub_free_single_sensor, pdev); > +} > + > +static int cros_ec_sensorhub_register(struct device *dev, > + struct cros_ec_sensorhub *sensorhub) > +{ > + int ret, i, id, sensor_num; > + struct cros_ec_dev *ec = sensorhub->ec; > + int sensor_type[MOTIONSENSE_TYPE_MAX] = { 0 }; > + struct ec_params_motion_sense *params; > + struct ec_response_motion_sense *resp; > + struct cros_ec_command *msg; > + char *name; > + > + sensor_num = cros_ec_get_sensor_count(ec); > + if (sensor_num < 0) { > + dev_err(dev, > + "Unable to retrieve sensor information (err:%d)\n", > + sensor_num); > + return sensor_num; > + } > + > + if (sensor_num == 0) { > + dev_err(dev, "Zero sensors reported.\n"); > + return -EINVAL; > + } > + > + /* Prepare a message to send INFO command to each sensor. */ > + msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*resp)), > + GFP_KERNEL); > + if (!msg) > + return -ENOMEM; > + > + msg->version = 1; > + msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset; > + msg->outsize = sizeof(*params); > + msg->insize = sizeof(*resp); > + params = (struct ec_params_motion_sense *)msg->data; > + resp = (struct ec_response_motion_sense *)msg->data; > + > + id = 0; > + for (i = 0; i < sensor_num; i++) { > + params->cmd = MOTIONSENSE_CMD_INFO; > + params->info.sensor_num = i; > + ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); > + if (ret < 0) { > + dev_warn(dev, "no info for EC sensor %d : %d/%d\n", > + i, ret, msg->result); > + continue; > + } > + switch (resp->info.type) { > + case MOTIONSENSE_TYPE_ACCEL: > + name = "cros-ec-accel"; > + break; > + case MOTIONSENSE_TYPE_BARO: > + name = "cros-ec-baro"; > + break; > + case MOTIONSENSE_TYPE_GYRO: > + name = "cros-ec-gyro"; > + break; > + case MOTIONSENSE_TYPE_MAG: > + name = "cros-ec-mag"; > + break; > + case MOTIONSENSE_TYPE_PROX: > + name = "cros-ec-prox"; > + break; > + case MOTIONSENSE_TYPE_LIGHT: > + name = "cros-ec-light"; > + break; > + case MOTIONSENSE_TYPE_ACTIVITY: > + name = "cros-ec-activity"; > + break; > + default: > + dev_warn(dev, "unknown type %d\n", resp->info.type); > + continue; > + } > + ret = cros_ec_sensorhub_allocate_single_sensor(dev, name, i); > + if (ret) > + goto error; > + > + sensor_type[resp->info.type]++; > + } > + > + if (sensor_type[MOTIONSENSE_TYPE_ACCEL] >= 2) > + ec->has_kb_wake_angle = true; > + > + if (cros_ec_check_features(ec, > + EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS)) { > + ret = cros_ec_sensorhub_allocate_single_sensor(dev, > + "cros-ec-lid-angle", 0); > + if (ret) > + goto error; > + } > + kfree(msg); > + return 0; > + > +error: > + kfree(msg); > + return ret; > +} > + > +static int cros_ec_sensorhub_probe(struct platform_device *sensorhub_pdev) > +{ > + struct device *dev = &sensorhub_pdev->dev; > + struct cros_ec_dev *ec = dev_get_drvdata(dev->parent); > + int ret, i; > + struct cros_ec_sensorhub *data = > + devm_kzalloc(dev, sizeof(struct cros_ec_sensorhub), GFP_KERNEL); > + > + if (!data) > + return -ENOMEM; > + > + data->ec = ec; > + dev_set_drvdata(dev, data); > + > + /* Check whether this EC is a sensor hub. */ > + if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) { > + ret = cros_ec_sensorhub_register(dev, data); > + if (ret) { > + dev_err(dev, "Register failed %d\n", ret); > + return ret; > + } > + } else { > + /* > + * If the device has sensors but does not claim to > + * be a sensor hub, we are in legacy mode. > + */ > + for (i = 0; i < 2; i++) { > + ret = cros_ec_sensorhub_allocate_single_sensor(dev, > + "cros-ec-accel-legacy", i); > + if (ret) { > + dev_err(dev, "Legacy %d failed %d\n", i, ret); > + return ret; > + } > + } > + } > + > + return 0; > +} > + > +static struct platform_driver cros_ec_sensorhub_driver = { > + .driver = { > + .name = DRV_NAME, > + }, > + .probe = cros_ec_sensorhub_probe, > +}; > + > +module_platform_driver(cros_ec_sensorhub_driver); > + > +MODULE_ALIAS("platform:" DRV_NAME); > +MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>"); > +MODULE_DESCRIPTION("ChromeOS EC MEMS Sensor Hub Driver"); > +MODULE_LICENSE("GPL"); > diff --git a/include/linux/platform_data/cros_ec_sensorhub.h b/include/linux/platform_data/cros_ec_sensorhub.h > new file mode 100644 > index 000000000000..63c8dafb87e8 > --- /dev/null > +++ b/include/linux/platform_data/cros_ec_sensorhub.h > @@ -0,0 +1,22 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * cros_ec_sensorhub- Chrome OS EC MEMS Sensor Hub driver. > + * > + * Copyright (C) 2019 Google, Inc > + */ > + > +#ifndef __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H > +#define __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H > + > +#include <linux/platform_data/cros_ec_commands.h> > + > +/** > + * struct cros_ec_sensorhub - Sensor Hub device data. > + * > + * @ec: Embedded Controller where the hub is located. > + */ > +struct cros_ec_sensorhub { > + struct cros_ec_dev *ec; > +}; > + > +#endif /* __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H */
diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig index cdbb29cfb907..fefad9572790 100644 --- a/drivers/iio/common/cros_ec_sensors/Kconfig +++ b/drivers/iio/common/cros_ec_sensors/Kconfig @@ -4,7 +4,7 @@ # config IIO_CROS_EC_SENSORS_CORE tristate "ChromeOS EC Sensors Core" - depends on SYSFS && CROS_EC + depends on SYSFS && CROS_EC_SENSORHUB select IIO_BUFFER select IIO_TRIGGERED_BUFFER help diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig index ee5f08ea57b6..884ac9a287f2 100644 --- a/drivers/platform/chrome/Kconfig +++ b/drivers/platform/chrome/Kconfig @@ -190,6 +190,18 @@ config CROS_EC_DEBUGFS To compile this driver as a module, choose M here: the module will be called cros_ec_debugfs. +config CROS_EC_SENSORHUB + tristate "ChromeOS EC MEMS Sensor Hub" + depends on CROS_EC + help + Allow loading IIO sensors. This driver is loaded by MFD and will in + turn query the EC and register the sensors. + It also spreads the sensor data coming from the EC to the IIO sensor + object. + + To compile this driver as a module, choose M here: the + module will be called cros_ec_sensorhub. + config CROS_EC_SYSFS tristate "ChromeOS EC control and information through sysfs" depends on MFD_CROS_EC_DEV && SYSFS diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile index 477ec3d1d1c9..a164c40dc099 100644 --- a/drivers/platform/chrome/Makefile +++ b/drivers/platform/chrome/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o cros_ec_trace.o obj-$(CONFIG_CROS_KBD_LED_BACKLIGHT) += cros_kbd_led_backlight.o obj-$(CONFIG_CROS_EC_CHARDEV) += cros_ec_chardev.o obj-$(CONFIG_CROS_EC_LIGHTBAR) += cros_ec_lightbar.o +obj-$(CONFIG_CROS_EC_SENSORHUB) += cros_ec_sensorhub.o obj-$(CONFIG_CROS_EC_VBC) += cros_ec_vbc.o obj-$(CONFIG_CROS_EC_DEBUGFS) += cros_ec_debugfs.o obj-$(CONFIG_CROS_EC_SYSFS) += cros_ec_sysfs.o diff --git a/drivers/platform/chrome/cros_ec_sensorhub.c b/drivers/platform/chrome/cros_ec_sensorhub.c new file mode 100644 index 000000000000..85e3d3f25786 --- /dev/null +++ b/drivers/platform/chrome/cros_ec_sensorhub.c @@ -0,0 +1,197 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SensorHub: driver that discover sensors behind + * a ChromeOS Embedded controller. + * + * Copyright 2019 Google LLC + */ + +#include <linux/init.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/mfd/cros_ec.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> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#define DRV_NAME "cros-ec-sensorhub" + +static void cros_ec_sensorhub_free_single_sensor(void *arg) +{ + struct platform_device *pdev = arg; + + platform_device_unregister(pdev); +} + +static int cros_ec_sensorhub_allocate_single_sensor(struct device *parent, + char *sensor_name, + int sensor_num) +{ + struct platform_device *pdev; + struct cros_ec_sensor_platform sensor_platforms = { + .sensor_num = sensor_num, + }; + + pdev = platform_device_register_data(parent, sensor_name, + PLATFORM_DEVID_AUTO, + &sensor_platforms, + sizeof(sensor_platforms)); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + return devm_add_action_or_reset(parent, + cros_ec_sensorhub_free_single_sensor, pdev); +} + +static int cros_ec_sensorhub_register(struct device *dev, + struct cros_ec_sensorhub *sensorhub) +{ + int ret, i, id, sensor_num; + struct cros_ec_dev *ec = sensorhub->ec; + int sensor_type[MOTIONSENSE_TYPE_MAX] = { 0 }; + struct ec_params_motion_sense *params; + struct ec_response_motion_sense *resp; + struct cros_ec_command *msg; + char *name; + + sensor_num = cros_ec_get_sensor_count(ec); + if (sensor_num < 0) { + dev_err(dev, + "Unable to retrieve sensor information (err:%d)\n", + sensor_num); + return sensor_num; + } + + if (sensor_num == 0) { + dev_err(dev, "Zero sensors reported.\n"); + return -EINVAL; + } + + /* Prepare a message to send INFO command to each sensor. */ + msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*resp)), + GFP_KERNEL); + if (!msg) + return -ENOMEM; + + msg->version = 1; + msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset; + msg->outsize = sizeof(*params); + msg->insize = sizeof(*resp); + params = (struct ec_params_motion_sense *)msg->data; + resp = (struct ec_response_motion_sense *)msg->data; + + id = 0; + for (i = 0; i < sensor_num; i++) { + params->cmd = MOTIONSENSE_CMD_INFO; + params->info.sensor_num = i; + ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); + if (ret < 0) { + dev_warn(dev, "no info for EC sensor %d : %d/%d\n", + i, ret, msg->result); + continue; + } + switch (resp->info.type) { + case MOTIONSENSE_TYPE_ACCEL: + name = "cros-ec-accel"; + break; + case MOTIONSENSE_TYPE_BARO: + name = "cros-ec-baro"; + break; + case MOTIONSENSE_TYPE_GYRO: + name = "cros-ec-gyro"; + break; + case MOTIONSENSE_TYPE_MAG: + name = "cros-ec-mag"; + break; + case MOTIONSENSE_TYPE_PROX: + name = "cros-ec-prox"; + break; + case MOTIONSENSE_TYPE_LIGHT: + name = "cros-ec-light"; + break; + case MOTIONSENSE_TYPE_ACTIVITY: + name = "cros-ec-activity"; + break; + default: + dev_warn(dev, "unknown type %d\n", resp->info.type); + continue; + } + ret = cros_ec_sensorhub_allocate_single_sensor(dev, name, i); + if (ret) + goto error; + + sensor_type[resp->info.type]++; + } + + if (sensor_type[MOTIONSENSE_TYPE_ACCEL] >= 2) + ec->has_kb_wake_angle = true; + + if (cros_ec_check_features(ec, + EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS)) { + ret = cros_ec_sensorhub_allocate_single_sensor(dev, + "cros-ec-lid-angle", 0); + if (ret) + goto error; + } + kfree(msg); + return 0; + +error: + kfree(msg); + return ret; +} + +static int cros_ec_sensorhub_probe(struct platform_device *sensorhub_pdev) +{ + struct device *dev = &sensorhub_pdev->dev; + struct cros_ec_dev *ec = dev_get_drvdata(dev->parent); + int ret, i; + struct cros_ec_sensorhub *data = + devm_kzalloc(dev, sizeof(struct cros_ec_sensorhub), GFP_KERNEL); + + if (!data) + return -ENOMEM; + + data->ec = ec; + dev_set_drvdata(dev, data); + + /* Check whether this EC is a sensor hub. */ + if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) { + ret = cros_ec_sensorhub_register(dev, data); + if (ret) { + dev_err(dev, "Register failed %d\n", ret); + return ret; + } + } else { + /* + * If the device has sensors but does not claim to + * be a sensor hub, we are in legacy mode. + */ + for (i = 0; i < 2; i++) { + ret = cros_ec_sensorhub_allocate_single_sensor(dev, + "cros-ec-accel-legacy", i); + if (ret) { + dev_err(dev, "Legacy %d failed %d\n", i, ret); + return ret; + } + } + } + + return 0; +} + +static struct platform_driver cros_ec_sensorhub_driver = { + .driver = { + .name = DRV_NAME, + }, + .probe = cros_ec_sensorhub_probe, +}; + +module_platform_driver(cros_ec_sensorhub_driver); + +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>"); +MODULE_DESCRIPTION("ChromeOS EC MEMS Sensor Hub Driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/cros_ec_sensorhub.h b/include/linux/platform_data/cros_ec_sensorhub.h new file mode 100644 index 000000000000..63c8dafb87e8 --- /dev/null +++ b/include/linux/platform_data/cros_ec_sensorhub.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * cros_ec_sensorhub- Chrome OS EC MEMS Sensor Hub driver. + * + * Copyright (C) 2019 Google, Inc + */ + +#ifndef __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H +#define __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H + +#include <linux/platform_data/cros_ec_commands.h> + +/** + * struct cros_ec_sensorhub - Sensor Hub device data. + * + * @ec: Embedded Controller where the hub is located. + */ +struct cros_ec_sensorhub { + struct cros_ec_dev *ec; +}; + +#endif /* __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H */
Similar to HID sensor stack, the new driver sits between cros_ec_dev and the iio device drivers: EC based iio device topology would be: iio:device1 -> ...0/0000:00:1f.0/PNP0C09:00/GOOG0004:00/cros-ec-dev.6.auto/ cros-ec-sensorhub.7.auto/ cros-ec-accel.15.auto/ iio:device1 It will be expanded to control EC sensor FIFO. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> --- Changes in v5: - Use devm_add_action_or_reset() to free children devices. In consequence, remove array and define not use for house keeping in .h file, remove .remove entry point. - Use PTR_ERR() when needed. - Use demv_kzalloc for device memory allocation. Changes in v4: - Use platform_device_register_data in children registration. - Free registered pdev children at remove time. - Remove useless includes - Check patch with --strict option Use sizeof(*obj) instead of sizeof(struct ...obj) Alignement - Describe cros_ec_sensorhub in kernel-doc format. Changes in v3: - Fix doxygen comments - Fix use of ret |= - Remove unncessary goto. Changes in v2: - Remove unerelated changes. - Fix spelling. - Use !x instead of x == NULL - Use platform_ API directly to register IIO sensors from cros_ec_sensorhub. drivers/iio/common/cros_ec_sensors/Kconfig | 2 +- drivers/platform/chrome/Kconfig | 12 ++ drivers/platform/chrome/Makefile | 1 + drivers/platform/chrome/cros_ec_sensorhub.c | 197 ++++++++++++++++++ .../linux/platform_data/cros_ec_sensorhub.h | 22 ++ 5 files changed, 233 insertions(+), 1 deletion(-) create mode 100644 drivers/platform/chrome/cros_ec_sensorhub.c create mode 100644 include/linux/platform_data/cros_ec_sensorhub.h