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Message-Id: <20250709-iio-const-data-19-v2-2-fb3fc9191251@baylibre.com>
Date: Wed, 09 Jul 2025 21:20:01 -0500
From: David Lechner <dlechner@...libre.com>
To: Jonathan Cameron <jic23@...nel.org>,
Nuno Sá <nuno.sa@...log.com>,
Andy Shevchenko <andy@...nel.org>, David Lechner <dlechner@...libre.com>,
Andrea Merello <andrea.merello@....it>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v2 2/2] iio: imu: bno055: make bno055_sysfs_attr const
Add const qualifier to struct bno055_sysfs_attr and its array fields.
All of this is read-only data so it can be made const.
Signed-off-by: David Lechner <dlechner@...libre.com>
---
drivers/iio/imu/bno055/bno055.c | 49 ++++++++++++++++++++++-------------------
1 file changed, 26 insertions(+), 23 deletions(-)
diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c
index 0eb5e1334e5564284c7f4bf560424b5ec734903d..a8e71679ec21dc2cfb0cbbce978fc7cad9929d96 100644
--- a/drivers/iio/imu/bno055/bno055.c
+++ b/drivers/iio/imu/bno055/bno055.c
@@ -114,35 +114,35 @@
#define BNO055_UID_LEN 16
struct bno055_sysfs_attr {
- int *vals;
+ const int *vals;
int len;
- int *fusion_vals;
- int *hw_xlate;
+ const int *fusion_vals;
+ const int *hw_xlate;
int hw_xlate_len;
int type;
};
-static int bno055_acc_lpf_vals[] = {
+static const int bno055_acc_lpf_vals[] = {
7, 810000, 15, 630000, 31, 250000, 62, 500000,
125, 0, 250, 0, 500, 0, 1000, 0,
};
-static struct bno055_sysfs_attr bno055_acc_lpf = {
+static const struct bno055_sysfs_attr bno055_acc_lpf = {
.vals = bno055_acc_lpf_vals,
.len = ARRAY_SIZE(bno055_acc_lpf_vals),
- .fusion_vals = (int[]){62, 500000},
+ .fusion_vals = (const int[]){62, 500000},
.type = IIO_VAL_INT_PLUS_MICRO,
};
-static int bno055_acc_range_vals[] = {
+static const int bno055_acc_range_vals[] = {
/* G: 2, 4, 8, 16 */
1962, 3924, 7848, 15696
};
-static struct bno055_sysfs_attr bno055_acc_range = {
+static const struct bno055_sysfs_attr bno055_acc_range = {
.vals = bno055_acc_range_vals,
.len = ARRAY_SIZE(bno055_acc_range_vals),
- .fusion_vals = (int[]){3924}, /* 4G */
+ .fusion_vals = (const int[]){3924}, /* 4G */
.type = IIO_VAL_INT,
};
@@ -166,37 +166,37 @@ static struct bno055_sysfs_attr bno055_acc_range = {
* = hwval * (dps_range/(2^15 * k))
* where k is rad-to-deg factor
*/
-static int bno055_gyr_scale_vals[] = {
+static const int bno055_gyr_scale_vals[] = {
125, 1877467, 250, 1877467, 500, 1877467,
1000, 1877467, 2000, 1877467,
};
-static int bno055_gyr_scale_hw_xlate[] = {0, 1, 2, 3, 4};
-static struct bno055_sysfs_attr bno055_gyr_scale = {
+static const int bno055_gyr_scale_hw_xlate[] = {0, 1, 2, 3, 4};
+static const struct bno055_sysfs_attr bno055_gyr_scale = {
.vals = bno055_gyr_scale_vals,
.len = ARRAY_SIZE(bno055_gyr_scale_vals),
- .fusion_vals = (int[]){1, 900},
+ .fusion_vals = (const int[]){1, 900},
.hw_xlate = bno055_gyr_scale_hw_xlate,
.hw_xlate_len = ARRAY_SIZE(bno055_gyr_scale_hw_xlate),
.type = IIO_VAL_FRACTIONAL,
};
-static int bno055_gyr_lpf_vals[] = {12, 23, 32, 47, 64, 116, 230, 523};
-static int bno055_gyr_lpf_hw_xlate[] = {5, 4, 7, 3, 6, 2, 1, 0};
-static struct bno055_sysfs_attr bno055_gyr_lpf = {
+static const int bno055_gyr_lpf_vals[] = {12, 23, 32, 47, 64, 116, 230, 523};
+static const int bno055_gyr_lpf_hw_xlate[] = {5, 4, 7, 3, 6, 2, 1, 0};
+static const struct bno055_sysfs_attr bno055_gyr_lpf = {
.vals = bno055_gyr_lpf_vals,
.len = ARRAY_SIZE(bno055_gyr_lpf_vals),
- .fusion_vals = (int[]){32},
+ .fusion_vals = (const int[]){32},
.hw_xlate = bno055_gyr_lpf_hw_xlate,
.hw_xlate_len = ARRAY_SIZE(bno055_gyr_lpf_hw_xlate),
.type = IIO_VAL_INT,
};
-static int bno055_mag_odr_vals[] = {2, 6, 8, 10, 15, 20, 25, 30};
-static struct bno055_sysfs_attr bno055_mag_odr = {
+static const int bno055_mag_odr_vals[] = {2, 6, 8, 10, 15, 20, 25, 30};
+static const struct bno055_sysfs_attr bno055_mag_odr = {
.vals = bno055_mag_odr_vals,
.len = ARRAY_SIZE(bno055_mag_odr_vals),
- .fusion_vals = (int[]){20},
+ .fusion_vals = (const int[]){20},
.type = IIO_VAL_INT,
};
@@ -553,7 +553,8 @@ static const struct iio_chan_spec bno055_channels[] = {
};
static int bno055_get_regmask(struct bno055_priv *priv, int *val, int *val2,
- int reg, int mask, struct bno055_sysfs_attr *attr)
+ int reg, int mask,
+ const struct bno055_sysfs_attr *attr)
{
const int shift = __ffs(mask);
int hwval, idx;
@@ -582,7 +583,8 @@ static int bno055_get_regmask(struct bno055_priv *priv, int *val, int *val2,
}
static int bno055_set_regmask(struct bno055_priv *priv, int val, int val2,
- int reg, int mask, struct bno055_sysfs_attr *attr)
+ int reg, int mask,
+ const struct bno055_sysfs_attr *attr)
{
const int shift = __ffs(mask);
int best_delta;
@@ -763,7 +765,8 @@ static int bno055_read_simple_chan(struct iio_dev *indio_dev,
}
}
-static int bno055_sysfs_attr_avail(struct bno055_priv *priv, struct bno055_sysfs_attr *attr,
+static int bno055_sysfs_attr_avail(struct bno055_priv *priv,
+ const struct bno055_sysfs_attr *attr,
const int **vals, int *length)
{
if (priv->operation_mode != BNO055_OPR_MODE_AMG) {
--
2.43.0
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