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iio: adis: Add adis_update_bits() APIs

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This patch adds a `regmap_update_bits()` like API to the ADIS library.
It provides locked and unlocked variant.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sá
2020-04-13 10:24:42 +02:00
committed by Jonathan Cameron
parent 698211065d
commit b9c5eec725
2 changed files with 84 additions and 0 deletions
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25
drivers/iio/imu/adis.c
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@@ -223,6 +223,31 @@ int __adis_read_reg(struct adis *adis, unsigned int reg,
return ret;
}
EXPORT_SYMBOL_GPL(__adis_read_reg);
/**
* __adis_update_bits_base() - ADIS Update bits function - Unlocked version
* @adis: The adis device
* @reg: The address of the lower of the two registers
* @mask: Bitmask to change
* @val: Value to be written
* @size: Size of the register to update
*
* Updates the desired bits of @reg in accordance with @mask and @val.
*/
int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask,
const u32 val, u8 size)
{
int ret;
u32 __val;
ret = __adis_read_reg(adis, reg, &__val, size);
if (ret)
return ret;
__val = (__val & ~mask) | (val & mask);
return __adis_write_reg(adis, reg, __val, size);
}
EXPORT_SYMBOL_GPL(__adis_update_bits_base);
#ifdef CONFIG_DEBUG_FS