Re: [PATCH v3 0/3] Interrupt and Continuous mode support for VL6180

[Jonathan Cameron]

On Mon,  7 Oct 2024 20:52:20 +0530
Abhash Jha <abhashkumarjha123@xxxxxxxxx> wrote:

> Sending v3 again because I accidently sent it without a subject.
> Apologies from my side.
> 
> Hello,
> 
Series applied to the togreg branch of iio.git and pushed out as testing for
0-day to have a first look at it.

Thanks,

Jonathan

> The first patch adds support for configuring the Sampling frequency
> (inter-measurement period) of the sensor. The values should be provided
> in milihertz. The default value for the inter-measurement period for
> ALS is 10ms or 100000 mHz and for Range is 50ms or 20000 mHz.
> 
> The second patch adds support for interrupt based single shot reading.
> We registered an irq_handler that fires everytime the data is ready.
> And then we read the appropriate value in the `vl6180_measure` routine.
> 
> The third patch adds support for continuous mode in the sensor by using
> buffers. We enable the sensor's continuous mode in the buffer_postenable
> function depending on the `active_scan_mask`.
> The continuous mode can be disabled by disabling the buffer.
> Added a trigger to the device for the continuous mode. Also validating that
> the device uses the internal trigger provided by us.
> 
> Changes in v2:
> - Fixed `label followed by a declaration is a C23 extension [-Wc23-extensions]`
>   by moving the guard(mutex)(&data->lock) above the switch statement.
> 
> - The above error was pointed out during testing by kernel-test-robot
> 
> Changes in v3:
> - Fixed race condition related to `reinit_completion`
> - Used `iio_for_each_active_channel` instead of manually accessing `masklength`
> - Accepting sampling frequency values in milihertz instead of miliseconds.
> - Minor code refactoring.
> 
> Thanks,
> Abhash Jha
> 
> Abhash Jha (3):
>   iio: light: vl6180: Add configurable inter-measurement period support
>   iio: light: vl6180: Added Interrupt support for single shot access
>   iio: light: vl6180: Add support for Continuous Mode
> 
>  drivers/iio/light/vl6180.c | 255 ++++++++++++++++++++++++++++++++++---
>  1 file changed, 238 insertions(+), 17 deletions(-)
>