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

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commit c0f866de4ce447bca3191b9cefac60c4b36a7922 upstream.

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: 9f9ff91b77 ("iio: imu: inv_icm42600: add SPI driver for inv_icm42600 driver")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-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: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jean-Baptiste Maneyrol
2024-11-12 10:30:10 +01:00
committed by Greg Kroah-Hartman
parent 479a42eedb
commit f2e4823baa
3 changed files with 14 additions and 1 deletions
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1
drivers/iio/imu/inv_icm42600/inv_icm42600.h
View File

@@ -360,6 +360,7 @@ struct inv_icm42600_state {
typedef int (*inv_icm42600_bus_setup)(struct inv_icm42600_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_regmap_config;
extern const struct regmap_config inv_icm42600_spi_regmap_config;
extern const struct dev_pm_ops inv_icm42600_pm_ops; extern const struct dev_pm_ops inv_icm42600_pm_ops;
const struct iio_mount_matrix * const struct iio_mount_matrix *

11
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
View File

@@ -43,6 +43,17 @@ const struct regmap_config inv_icm42600_regmap_config = {
}; };
EXPORT_SYMBOL_GPL(inv_icm42600_regmap_config); EXPORT_SYMBOL_GPL(inv_icm42600_regmap_config);
/* define specific regmap for SPI not supporting burst write */
const struct regmap_config inv_icm42600_spi_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x4FFF,
.ranges = inv_icm42600_regmap_ranges,
.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
.use_single_write = true,
};
EXPORT_SYMBOL_GPL(inv_icm42600_spi_regmap_config);
struct inv_icm42600_hw { struct inv_icm42600_hw {
uint8_t whoami; uint8_t whoami;
const char *name; const char *name;

3
drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
View File

@@ -59,7 +59,8 @@ static int inv_icm42600_probe(struct spi_device *spi)
return -EINVAL; return -EINVAL;
chip = (uintptr_t)match; 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)) if (IS_ERR(regmap))
return PTR_ERR(regmap); return PTR_ERR(regmap);