From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
Burst write with SPI is not working for all icm42600 chips. It was
only used for setting user offsets with regmap_bulk_write.
Allow tweak of common regmap_config for using only single write for
spi.
Fixes: 9f9ff91b775b ("iio: imu: inv_icm42600: add SPI driver for inv_icm42600 driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
---
drivers/iio/imu/inv_icm42600/inv_icm42600.h | 2 +-
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 2 +-
drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c | 3 +++
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
index 3a07e43e4cf154f3107c015c30248330d8e677f8..36a3b0795fb7d6cb0c178fadd93896fbc346ba0d 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600.h
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
@@ -402,7 +402,7 @@ struct inv_icm42600_sensor_state {
typedef int (*inv_icm42600_bus_setup)(struct inv_icm42600_state *);
-extern const struct regmap_config inv_icm42600_regmap_config;
+extern struct regmap_config inv_icm42600_regmap_config;
extern const struct dev_pm_ops inv_icm42600_pm_ops;
const struct iio_mount_matrix *
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
index 93b5d7a3339ccff16b21bf6c40ed7b2311317cf4..680373f6267b37d386e4e7bda543ba4efe97e66b 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -74,7 +74,7 @@ static const struct regmap_access_table inv_icm42600_regmap_rd_noinc_accesses[]
},
};
-const struct regmap_config inv_icm42600_regmap_config = {
+struct regmap_config inv_icm42600_regmap_config = {
.name = "inv_icm42600",
.reg_bits = 8,
.val_bits = 8,
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
index 3b6d05fce65d544524b25299c6d342af92cfd1e0..73cacfd157a4538ae8c9d1c8d97157afa28aa672 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
@@ -59,6 +59,9 @@ static int inv_icm42600_probe(struct spi_device *spi)
return -EINVAL;
chip = (uintptr_t)match;
+ /* spi doesn't support burst write */
+ inv_icm42600_regmap_config.use_single_write = true;
+
regmap = devm_regmap_init_spi(spi, &inv_icm42600_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
---
base-commit: c9f8285ec18c08fae0de08835eb8e5953339e664
change-id: 20241107-inv-icm42600-fix-spi-burst-write-not-supported-efe78d7379a5
Best regards,
--
Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
