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Date: Fri, 24 May 2024 12:58:45 +0200
From: Nuno Sá <noname.nuno@...il.com>
To: Ramona Gradinariu <ramona.bolboaca13@...il.com>,
linux-kernel@...r.kernel.org, jic23@...nel.org, linux-iio@...r.kernel.org,
devicetree@...r.kernel.org, conor+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, robh@...nel.org, nuno.sa@...log.com
Subject: Re: [PATCH v4 04/10] iio: imu: adis_buffer: Add buffer setup API
with buffer attributes
On Fri, 2024-05-24 at 12:00 +0300, Ramona Gradinariu wrote:
> Add new API called devm_adis_setup_buffer_and_trigger_with_attrs() which
> also takes buffer attributes as a parameter.
> Rewrite devm_adis_setup_buffer_and_trigger() implementation such that it
> calls devm_adis_setup_buffer_and_trigger_with_attrs() with buffer
> attributes parameter NULL
>
> Signed-off-by: Ramona Gradinariu <ramona.bolboaca13@...il.com>
> ---
Reviewed-by: Nuno Sa <nuno.sa@...log.com>
> no changes in v4
> drivers/iio/imu/adis_buffer.c | 32 ++++++++++++++++++--------------
> include/linux/iio/imu/adis.h | 19 +++++++++++++++----
> 2 files changed, 33 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
> index 928933027ae3..871b78b225e2 100644
> --- a/drivers/iio/imu/adis_buffer.c
> +++ b/drivers/iio/imu/adis_buffer.c
> @@ -175,31 +175,36 @@ static void adis_buffer_cleanup(void *arg)
> }
>
> /**
> - * devm_adis_setup_buffer_and_trigger() - Sets up buffer and trigger for
> - * the managed adis device
> + * devm_adis_setup_buffer_and_trigger_with_attrs() - Sets up buffer and trigger
> + * for the managed adis device with buffer attributes.
> * @adis: The adis device
> * @indio_dev: The IIO device
> - * @trigger_handler: Optional trigger handler, may be NULL.
> + * @trigger_handler: Trigger handler: should handle the buffer readings.
> + * @ops: Optional buffer setup functions, may be NULL.
> + * @buffer_attrs: Extra buffer attributes.
> *
> * Returns 0 on success, a negative error code otherwise.
> *
> - * This function sets up the buffer and trigger for a adis devices. If
> - * 'trigger_handler' is NULL the default trigger handler will be used. The
> - * default trigger handler will simply read the registers assigned to the
> - * currently active channels.
> + * This function sets up the buffer (with buffer setup functions and extra
> + * buffer attributes) and trigger for a adis devices with buffer attributes.
> */
> int
> -devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
> - irq_handler_t trigger_handler)
> +devm_adis_setup_buffer_and_trigger_with_attrs(struct adis *adis, struct iio_dev
> *indio_dev,
> + irq_handler_t trigger_handler,
> + const struct iio_buffer_setup_ops
> *ops,
> + const struct iio_dev_attr
> **buffer_attrs)
> {
> int ret;
>
> if (!trigger_handler)
> trigger_handler = adis_trigger_handler;
>
> - ret = devm_iio_triggered_buffer_setup(&adis->spi->dev, indio_dev,
> - &iio_pollfunc_store_time,
> - trigger_handler, NULL);
> + ret = devm_iio_triggered_buffer_setup_ext(&adis->spi->dev, indio_dev,
> + &iio_pollfunc_store_time,
> + trigger_handler,
> + IIO_BUFFER_DIRECTION_IN,
> + ops,
> + buffer_attrs);
> if (ret)
> return ret;
>
> @@ -212,5 +217,4 @@ devm_adis_setup_buffer_and_trigger(struct adis *adis, struct
> iio_dev *indio_dev,
> return devm_add_action_or_reset(&adis->spi->dev, adis_buffer_cleanup,
> adis);
> }
> -EXPORT_SYMBOL_NS_GPL(devm_adis_setup_buffer_and_trigger, IIO_ADISLIB);
> -
> +EXPORT_SYMBOL_NS_GPL(devm_adis_setup_buffer_and_trigger_with_attrs, IIO_ADISLIB);
> diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
> index 8898966bc0f0..8dda3cfa5773 100644
> --- a/include/linux/iio/imu/adis.h
> +++ b/include/linux/iio/imu/adis.h
> @@ -21,6 +21,7 @@
> #define ADIS_REG_PAGE_ID 0x00
>
> struct adis;
> +struct iio_dev_attr;
>
> /**
> * struct adis_timeouts - ADIS chip variant timeouts
> @@ -515,11 +516,19 @@ int adis_single_conversion(struct iio_dev *indio_dev,
> #define ADIS_ROT_CHAN(mod, addr, si, info_sep, info_all, bits) \
> ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info_sep, info_all, bits)
>
> +#define devm_adis_setup_buffer_and_trigger(adis, indio_dev, trigger_handler) \
> + devm_adis_setup_buffer_and_trigger_with_attrs((adis), (indio_dev), \
> + (trigger_handler), NULL, \
> + NULL)
> +
> #ifdef CONFIG_IIO_ADIS_LIB_BUFFER
>
> int
> -devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
> - irq_handler_t trigger_handler);
> +devm_adis_setup_buffer_and_trigger_with_attrs(struct adis *adis,
> + struct iio_dev *indio_dev,
> + irq_handler_t trigger_handler,
> + const struct iio_buffer_setup_ops
> *ops,
> + const struct iio_dev_attr
> **buffer_attrs);
>
> int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
>
> @@ -529,8 +538,10 @@ int adis_update_scan_mode(struct iio_dev *indio_dev,
> #else /* CONFIG_IIO_BUFFER */
>
> static inline int
> -devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
> - irq_handler_t trigger_handler)
> +devm_adis_setup_buffer_and_trigger_with_attrs(struct adis *adis, struct iio_dev
> *indio_dev,
> + irq_handler_t trigger_handler,
> + const struct iio_buffer_setup_ops
> *ops,
> + const struct iio_dev_attr
> **buffer_attrs)
> {
> return 0;
> }
> --
> 2.34.1
>
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