diff options
Diffstat (limited to 'drivers/iio/accel/adxl345_spi.c')
| -rw-r--r-- | drivers/iio/accel/adxl345_spi.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c index 968e7b390d4b..0315f4bfd69a 100644 --- a/drivers/iio/accel/adxl345_spi.c +++ b/drivers/iio/accel/adxl345_spi.c @@ -12,12 +12,15 @@ #include "adxl345.h" #define ADXL345_MAX_SPI_FREQ_HZ 5000000 +#define ADXL345_MAX_FREQ_NO_FIFO_DELAY 1500000 static const struct regmap_config adxl345_spi_regmap_config = { .reg_bits = 8, .val_bits = 8, /* Setting bits 7 and 6 enables multiple-byte read */ .read_flag_mask = BIT(7) | BIT(6), + .volatile_reg = adxl345_is_volatile_reg, + .cache_type = REGCACHE_MAPLE, }; static int adxl345_spi_setup(struct device *dev, struct regmap *regmap) @@ -28,6 +31,7 @@ static int adxl345_spi_setup(struct device *dev, struct regmap *regmap) static int adxl345_spi_probe(struct spi_device *spi) { struct regmap *regmap; + bool needs_delay; /* Bail out if max_speed_hz exceeds 5 MHz */ if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ) @@ -38,10 +42,11 @@ static int adxl345_spi_probe(struct spi_device *spi) if (IS_ERR(regmap)) return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n"); + needs_delay = spi->max_speed_hz > ADXL345_MAX_FREQ_NO_FIFO_DELAY; if (spi->mode & SPI_3WIRE) - return adxl345_core_probe(&spi->dev, regmap, adxl345_spi_setup); + return adxl345_core_probe(&spi->dev, regmap, needs_delay, adxl345_spi_setup); else - return adxl345_core_probe(&spi->dev, regmap, NULL); + return adxl345_core_probe(&spi->dev, regmap, needs_delay, NULL); } static const struct adxl345_chip_info adxl345_spi_info = { |