Commit 07498719 authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Jonathan Cameron
Browse files

iio:pressure:ms5637: limit available sample frequencies 



Avoid exposing all the sampling frequencies for chip that only support a
subset.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210109231148.1168104-4-alexandre.belloni@bootlin.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 8c125f5f

drivers/iio/pressure/ms5637.c

+15 −4
Original line number Diff line number Diff line
@@ -36,8 +36,19 @@ struct ms_tp_data { 
};



static const int ms5637_samp_freq[6] = { 960, 480, 240, 120, 60, 30 };

/* String copy of the above const for readability purpose */

static const char ms5637_show_samp_freq[] = "960 480 240 120 60 30";



static ssize_t ms5637_show_samp_freq(struct device *dev, struct device_attribute *attr, char *buf)

{

	struct iio_dev *indio_dev = dev_to_iio_dev(dev);

	struct ms_tp_dev *dev_data = iio_priv(indio_dev);

	int i, len = 0;



	for (i = 0; i <= dev_data->hw->max_res_index; i++)

		len += sysfs_emit_at(buf, len, "%u ", ms5637_samp_freq[i]);

	sysfs_emit_at(buf, len - 1, "\n");



	return len;

}



static int ms5637_read_raw(struct iio_dev *indio_dev,

			   struct iio_chan_spec const *channel, int *val,
@@ -114,10 +125,10 @@ static const struct iio_chan_spec ms5637_channels[] = { 
	}

};



static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);

static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);



static struct attribute *ms5637_attributes[] = {

	&iio_const_attr_sampling_frequency_available.dev_attr.attr,

	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,

	NULL,

};