linux-kernel - Re: [PATCH v2 2/2] iio: imu: Add driver for BMI323 IMU

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Message-ID: <20231014174626.3c203096@jic23-huawei>
Date:   Sat, 14 Oct 2023 17:46:26 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Jagath Jog J <jagathjog1996@...il.com>
Cc:     andriy.shevchenko@...ux.intel.com, u.kleine-koenig@...gutronix.de,
        lars@...afoo.de, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linus.walleij@...aro.org,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] iio: imu: Add driver for BMI323 IMU

On Fri, 13 Oct 2023 09:18:08 +0530
Jagath Jog J <jagathjog1996@...il.com> wrote:

> The Bosch BMI323 is a 6-axis low-power IMU that provide measurements for
> acceleration, angular rate, and temperature. This sensor includes
> motion-triggered interrupt features, such as a step counter, tap detection,
> and activity/inactivity interrupt capabilities.
> 
> The driver supports various functionalities, including data ready, FIFO
> data handling, and events such as tap detection, step counting, and
> activity interrupts.
> 
> Signed-off-by: Jagath Jog J <jagathjog1996@...il.com>
Hi Jagath,

Nice driver.

We are rapidly approaching the end of this cycle and as this is a
large driver, I think it could do to remain on list at least a week
before I apply it or until it picks up some tags from others if that
happens sooner. Hence I'm afraid it might well sneak into next cycle.

A couple of really small things in the docs and build files from me.

Jonathan

> ---
>  Documentation/ABI/testing/sysfs-bus-iio |   18 +
>  MAINTAINERS                             |    7 +
>  drivers/iio/imu/Kconfig                 |    1 +
>  drivers/iio/imu/Makefile                |    1 +
>  drivers/iio/imu/bmi323/Kconfig          |   33 +
>  drivers/iio/imu/bmi323/Makefile         |    7 +
>  drivers/iio/imu/bmi323/bmi323.h         |  209 +++
>  drivers/iio/imu/bmi323/bmi323_core.c    | 2139 +++++++++++++++++++++++
>  drivers/iio/imu/bmi323/bmi323_i2c.c     |  121 ++
>  drivers/iio/imu/bmi323/bmi323_spi.c     |   92 +
>  10 files changed, 2628 insertions(+)
>  create mode 100644 drivers/iio/imu/bmi323/Kconfig
>  create mode 100644 drivers/iio/imu/bmi323/Makefile
>  create mode 100644 drivers/iio/imu/bmi323/bmi323.h
>  create mode 100644 drivers/iio/imu/bmi323/bmi323_core.c
>  create mode 100644 drivers/iio/imu/bmi323/bmi323_i2c.c
>  create mode 100644 drivers/iio/imu/bmi323/bmi323_spi.c
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 19cde14f3869..c66fc560ee4b 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -2254,3 +2254,21 @@ Description:
>  		If a label is defined for this event add that to the event
>  		specific attributes. This is useful for userspace to be able to
>  		better identify an individual event.
> +
> +What:		/sys/.../events/in_accel_gesture_tap_wait_timeout
> +KernelVersion:	6.7
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Enable tap gesture confirmation with timeout.

> +
> +What:		/sys/.../events/in_accel_gesture_tap_wait_dur
> +KernelVersion:	6.7
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		Timeout value for tap gesture confirmation.

Units need to be specified.  Seconds?

> +
> +What:		/sys/.../events/in_accel_gesture_tap_wait_dur_available
> +KernelVersion:	6.7
> +Contact:	linux-iio@...r.kernel.org
> +Description:
> +		List of available timeout value for tap gesture confirmation.
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 4e07c032d06a..47ca415212a7 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3595,6 +3595,13 @@ S:	Maintained
>  F:	Documentation/devicetree/bindings/iio/accel/bosch,bma400.yaml
>  F:	drivers/iio/accel/bma400*
>  
> +BOSCH SENSORTEC BMI323 IMU IIO DRIVER
> +M:	Jagath Jog J <jagathjog1996@...il.com>
> +L:	linux-iio@...r.kernel.org
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/iio/imu/bosch,bma400.yaml
> +F:	drivers/iio/imu/bmi323/
> +
>  BPF JIT for ARM
>  M:	Shubham Bansal <illusionist.neo@...il.com>
>  L:	bpf@...r.kernel.org
> diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig
> index c2f97629e9cd..6c9a85294bc1 100644
> --- a/drivers/iio/imu/Kconfig
> +++ b/drivers/iio/imu/Kconfig
> @@ -54,6 +54,7 @@ config ADIS16480
>  
>  source "drivers/iio/imu/bmi160/Kconfig"
>  source "drivers/iio/imu/bno055/Kconfig"
> +source "drivers/iio/imu/bmi323/Kconfig"
Same on ordering.
>  
>  config FXOS8700
>  	tristate
> diff --git a/drivers/iio/imu/Makefile b/drivers/iio/imu/Makefile
> index 6eb612034722..627406476357 100644
> --- a/drivers/iio/imu/Makefile
> +++ b/drivers/iio/imu/Makefile
> @@ -16,6 +16,7 @@ obj-$(CONFIG_IIO_ADIS_LIB) += adis_lib.o
>  
>  obj-y += bmi160/
>  obj-y += bno055/
> +obj-y += bmi323/ 
Alphabetical order. 

> diff --git a/drivers/iio/imu/bmi323/bmi323_core.c b/drivers/iio/imu/bmi323/bmi323_core.c
> new file mode 100644
> index 000000000000..0bd5dedd9a63
> --- /dev/null
> +++ b/drivers/iio/imu/bmi323/bmi323_core.c
> @@ -0,0 +1,2139 @@