linux-kernel - Re: [PATCH v7 2/4] iio: adc: Add Xilinx AMS driver

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Message-ID: <03afaedd-8ea5-0379-ac98-db61ac679259@metafoo.de>
Date:   Tue, 26 Oct 2021 09:09:44 +0200
From:   Lars-Peter Clausen <lars@...afoo.de>
To:     Anand Ashok Dumbre <anand.ashok.dumbre@...inx.com>,
        linux-kernel@...r.kernel.org, jic23@...nel.org,
        linux-iio@...r.kernel.org, git@...inx.com, michal.simek@...inx.com,
        pmeerw@...erw.net, devicetree@...r.kernel.org
Cc:     Manish Narani <manish.narani@...inx.com>
Subject: Re: [PATCH v7 2/4] iio: adc: Add Xilinx AMS driver

On 10/19/21 5:20 PM, Anand Ashok Dumbre wrote:
> [...]
> +#define AMS_CHAN_TEMP(_scan_index, _addr) { \
> +	.type = IIO_TEMP, \
> +	.indexed = 1, \
> +	.address = (_addr), \
> +	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
> +		BIT(IIO_CHAN_INFO_SCALE) | \
> +		BIT(IIO_CHAN_INFO_OFFSET), \
> +	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
There is no handling of IIO_CHAN_INFO_SAMP_FREQ in read_raw(). Reading 
the sampling_frequency attribute always returns -EINVAL.
> +	.event_spec = ams_temp_events, \
> +	.scan_index = _scan_index, \
> +	.num_event_specs = ARRAY_SIZE(ams_temp_events), \
> +}
> +
> +#define AMS_CHAN_VOLTAGE(_scan_index, _addr, _alarm) { \
> +	.type = IIO_VOLTAGE, \
> +	.indexed = 1, \
> +	.address = (_addr), \
> +	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
> +		BIT(IIO_CHAN_INFO_SCALE), \
> +	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
> +	.event_spec = (_alarm) ? ams_voltage_events : NULL, \
> +	.scan_index = _scan_index, \
> +	.num_event_specs = (_alarm) ? ARRAY_SIZE(ams_voltage_events) : 0, \
> +}