Commit c0f866de authored by Jean-Baptiste Maneyrol's avatar Jean-Baptiste Maneyrol Committed by Jonathan Cameron
Browse files

iio: imu: inv_icm42600: fix spi burst write not supported 



Burst write with SPI is not working for all icm42600 chips. It was
only used for setting user offsets with regmap_bulk_write.

Add specific SPI regmap config for using only single write with SPI.

Fixes: 9f9ff91b ("iio: imu: inv_icm42600: add SPI driver for inv_icm42600 driver")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarJean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://patch.msgid.link/20241112-inv-icm42600-fix-spi-burst-write-not-supported-v2-1-97690dc03607@tdk.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent fa13ac6c

drivers/iio/imu/inv_icm42600/inv_icm42600.h

+1 −0
Original line number Diff line number Diff line
@@ -403,6 +403,7 @@ 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 const struct regmap_config inv_icm42600_spi_regmap_config;

extern const struct dev_pm_ops inv_icm42600_pm_ops;



const struct iio_mount_matrix *

drivers/iio/imu/inv_icm42600/inv_icm42600_core.c

+15 −0
Original line number Diff line number Diff line
@@ -87,6 +87,21 @@ const struct regmap_config inv_icm42600_regmap_config = { 
};

EXPORT_SYMBOL_NS_GPL(inv_icm42600_regmap_config, "IIO_ICM42600");



/* define specific regmap for SPI not supporting burst write */

const struct regmap_config inv_icm42600_spi_regmap_config = {

	.name = "inv_icm42600",

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = 0x4FFF,

	.ranges = inv_icm42600_regmap_ranges,

	.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),

	.volatile_table = inv_icm42600_regmap_volatile_accesses,

	.rd_noinc_table = inv_icm42600_regmap_rd_noinc_accesses,

	.cache_type = REGCACHE_RBTREE,

	.use_single_write = true,

};

EXPORT_SYMBOL_NS_GPL(inv_icm42600_spi_regmap_config, "IIO_ICM42600");



struct inv_icm42600_hw {

	uint8_t whoami;

	const char *name;

drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c

+2 −1
Original line number Diff line number Diff line
@@ -59,7 +59,8 @@ static int inv_icm42600_probe(struct spi_device *spi) 
		return -EINVAL;

	chip = (uintptr_t)match;



	regmap = devm_regmap_init_spi(spi, &inv_icm42600_regmap_config);

	/* use SPI specific regmap */

	regmap = devm_regmap_init_spi(spi, &inv_icm42600_spi_regmap_config);

	if (IS_ERR(regmap))

		return PTR_ERR(regmap);