Re: [PATCH 5/5] iio: adis16480: fix devices that do not support sleep mode

[Jonathan Cameron <jic23@kernel.org>]

On Fri, 3 Sep 2021 16:14:23 +0200
Nuno Sá <nuno.sa@analog.com> wrote:

> Not all devices supported by this driver support being put to sleep
> mode. For those devices, when calling 'adis16480_stop_device()' on the
> unbind path, we where actually writing in the SYNC_SCALE register.
> 
> Fixes: 80cbc848c4fa0 ("iio: imu: adis16480: Add support for ADIS16490")
> Fixes: 82e7a1b250170 ("iio: imu: adis16480: Add support for ADIS1649x family of devices")
> Signed-off-by: Nuno Sá <nuno.sa@analog.com>

Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,

Jonathan

> ---
>  drivers/iio/imu/adis16480.c | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
> index a869a6e52a16..ed129321a14d 100644
> --- a/drivers/iio/imu/adis16480.c
> +++ b/drivers/iio/imu/adis16480.c
> @@ -144,6 +144,7 @@ struct adis16480_chip_info {
>  	unsigned int max_dec_rate;
>  	const unsigned int *filter_freqs;
>  	bool has_pps_clk_mode;
> +	bool has_sleep_cnt;
>  	const struct adis_data adis_data;
>  };
>  
> @@ -939,6 +940,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
>  		.temp_scale = 5650, /* 5.65 milli degree Celsius */
>  		.int_clk = 2460000,
>  		.max_dec_rate = 2048,
> +		.has_sleep_cnt = true,
>  		.filter_freqs = adis16480_def_filter_freqs,
>  		.adis_data = ADIS16480_DATA(16375, &adis16485_timeouts, 0),
>  	},
> @@ -952,6 +954,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
>  		.temp_scale = 5650, /* 5.65 milli degree Celsius */
>  		.int_clk = 2460000,
>  		.max_dec_rate = 2048,
> +		.has_sleep_cnt = true,
>  		.filter_freqs = adis16480_def_filter_freqs,
>  		.adis_data = ADIS16480_DATA(16480, &adis16480_timeouts, 0),
>  	},
> @@ -965,6 +968,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
>  		.temp_scale = 5650, /* 5.65 milli degree Celsius */
>  		.int_clk = 2460000,
>  		.max_dec_rate = 2048,
> +		.has_sleep_cnt = true,
>  		.filter_freqs = adis16480_def_filter_freqs,
>  		.adis_data = ADIS16480_DATA(16485, &adis16485_timeouts, 0),
>  	},
> @@ -978,6 +982,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
>  		.temp_scale = 5650, /* 5.65 milli degree Celsius */
>  		.int_clk = 2460000,
>  		.max_dec_rate = 2048,
> +		.has_sleep_cnt = true,
>  		.filter_freqs = adis16480_def_filter_freqs,
>  		.adis_data = ADIS16480_DATA(16488, &adis16485_timeouts, 0),
>  	},
> @@ -1425,9 +1430,12 @@ static int adis16480_probe(struct spi_device *spi)
>  	if (ret)
>  		return ret;
>  
> -	ret = devm_add_action_or_reset(&spi->dev, adis16480_stop, indio_dev);
> -	if (ret)
> -		return ret;
> +	if (st->chip_info->has_sleep_cnt) {
> +		ret = devm_add_action_or_reset(&spi->dev, adis16480_stop,
> +					       indio_dev);
> +		if (ret)
> +			return ret;
> +	}
>  
>  	ret = adis16480_config_irq_pin(spi->dev.of_node, st);
>  	if (ret)