From: Jonathan Cameron <jic23@kernel.org>
To: Stefan Popa <stefan.popa@analog.com>
Cc: <robh+dt@kernel.org>, <Michael.Hennerich@analog.com>,
<knaack.h@gmx.de>, <lars@metafoo.de>, <pmeerw@pmeerw.net>,
<gregkh@linuxfoundation.org>, <linux-kernel@vger.kernel.org>,
<linux-iio@vger.kernel.org>, <devicetree@vger.kernel.org>
Subject: Re: [PATCH v3 5/7] iio: imu: adis16480: Deal with filter freq in a generic way
Date: Sun, 3 Mar 2019 12:52:05 +0000 [thread overview]
Message-ID: <20190303125205.6ac90646@archlinux> (raw)
In-Reply-To: <1551284068-4882-6-git-send-email-stefan.popa@analog.com>
On Wed, 27 Feb 2019 18:14:26 +0200
Stefan Popa <stefan.popa@analog.com> wrote:
> When setting the filter frequency, the driver looks into the
> adis16480_def_filter_freqs table for the best match. Pass this table to
> the chip_info struct since future devices will need to use a different
> table.
>
> Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.
Thanks,
Jonathan
> ---
> drivers/iio/imu/adis16480.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
> index 92abc95..c90375d 100644
> --- a/drivers/iio/imu/adis16480.c
> +++ b/drivers/iio/imu/adis16480.c
> @@ -127,6 +127,7 @@ struct adis16480_chip_info {
> unsigned int temp_scale;
> unsigned int int_clk;
> unsigned int max_dec_rate;
> + const unsigned int *filter_freqs;
> };
>
> enum adis16480_int_pin {
> @@ -483,7 +484,7 @@ static int adis16480_get_filter_freq(struct iio_dev *indio_dev,
> if (!(val & enable_mask))
> *freq = 0;
> else
> - *freq = adis16480_def_filter_freqs[(val >> offset) & 0x3];
> + *freq = st->chip_info->filter_freqs[(val >> offset) & 0x3];
>
> return IIO_VAL_INT;
> }
> @@ -510,10 +511,10 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
> val &= ~enable_mask;
> } else {
> best_freq = 0;
> - best_diff = 310;
> + best_diff = st->chip_info->filter_freqs[0];
> for (i = 0; i < ARRAY_SIZE(adis16480_def_filter_freqs); i++) {
> - if (adis16480_def_filter_freqs[i] >= freq) {
> - diff = adis16480_def_filter_freqs[i] - freq;
> + if (st->chip_info->filter_freqs[i] >= freq) {
> + diff = st->chip_info->filter_freqs[i] - freq;
> if (diff < best_diff) {
> best_diff = diff;
> best_freq = i;
> @@ -730,6 +731,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
> .temp_scale = 5650, /* 5.65 milli degree Celsius */
> .int_clk = 2460000,
> .max_dec_rate = 2048,
> + .filter_freqs = adis16480_def_filter_freqs,
> },
> [ADIS16480] = {
> .channels = adis16480_channels,
> @@ -741,6 +743,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
> .temp_scale = 5650, /* 5.65 milli degree Celsius */
> .int_clk = 2460000,
> .max_dec_rate = 2048,
> + .filter_freqs = adis16480_def_filter_freqs,
> },
> [ADIS16485] = {
> .channels = adis16485_channels,
> @@ -752,6 +755,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
> .temp_scale = 5650, /* 5.65 milli degree Celsius */
> .int_clk = 2460000,
> .max_dec_rate = 2048,
> + .filter_freqs = adis16480_def_filter_freqs,
> },
> [ADIS16488] = {
> .channels = adis16480_channels,
> @@ -763,6 +767,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
> .temp_scale = 5650, /* 5.65 milli degree Celsius */
> .int_clk = 2460000,
> .max_dec_rate = 2048,
> + .filter_freqs = adis16480_def_filter_freqs,
> },
> };
>
next prev parent reply other threads:[~2019-03-03 12:52 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-27 16:14 [PATCH v3 0/7] iio: imu: adis16480: Add support for ADIS1649x family of devices Stefan Popa
2019-02-27 16:14 ` [PATCH v3 1/7] iio: imu: adis16480: Add support for configurable drdy indicator Stefan Popa
2019-03-03 12:46 ` Jonathan Cameron
2019-02-27 16:14 ` [PATCH v3 2/7] iio: imu: adis16480: Add OF device ID table Stefan Popa
2019-03-03 12:46 ` Jonathan Cameron
2019-02-27 16:14 ` [PATCH v3 3/7] iio: imu: adis16480: Treat temperature scale in a generic way Stefan Popa
2019-03-03 12:47 ` Jonathan Cameron
2019-02-27 16:14 ` [PATCH v3 4/7] iio: imu: adis16480: Calculate the sampling frequency " Stefan Popa
2019-03-03 12:51 ` Jonathan Cameron
2019-02-27 16:14 ` [PATCH v3 5/7] iio: imu: adis16480: Deal with filter freq " Stefan Popa
2019-03-03 12:52 ` Jonathan Cameron [this message]
2019-02-27 16:14 ` [PATCH v3 6/7] iio: imu: adis16480: Add support for ADIS1649x family of devices Stefan Popa
2019-03-03 12:53 ` Jonathan Cameron
2019-02-27 16:14 ` [PATCH v3 7/7] iio: imu: adis16480: Add docs for ADIS16480 IMU Stefan Popa
2019-03-03 12:54 ` Jonathan Cameron
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