[PATCH v3 5/7] iio: imu: adis16480: Deal with filter freq in a generic way

[Stefan Popa]

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.p...@analog.com>
---
 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,
        },
 };
 
-- 
2.7.4