mfd: da9052: Fix register access via SPI

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

The range of registers used by this driver exceeds that available
via SPI with no paging (127), so we have to override the values
from the default config which is set-up for I2C access.
Also change SPI settings to match device's recommended OTP values.

Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

authored by

Adam Ward and committed by

Lee Jones 11 years ago 72e341c4 c7f585fe

+5 -1

1 changed file

expand all

drivers

mfd

da9052-spi.c

+5 -1

drivers/mfd/da9052-spi.c

··· 32 32 if (!da9052) 33 33 return -ENOMEM; 34 34 35 - spi->mode = SPI_MODE_0 | SPI_CPOL; 35 + spi->mode = SPI_MODE_0; 36 36 spi->bits_per_word = 8; 37 37 spi_setup(spi); 38 38 ··· 43 43 44 44 config = da9052_regmap_config; 45 45 config.read_flag_mask = 1; 46 + config.reg_bits = 7; 47 + config.pad_bits = 1; 48 + config.val_bits = 8; 49 + config.use_single_rw = 1; 46 50 47 51 da9052->regmap = devm_regmap_init_spi(spi, &config); 48 52 if (IS_ERR(da9052->regmap)) {