static inline int max8971_masked_write(struct max8971_io *io,
u8 addr, u8 mask, u8 shift, u8 val)
{
u8 buf = 0;
int rc;
if (unlikely(!mask)) {
/* no actual access */
rc = 0;
goto out;
}
rc = max8971_read(io, addr, &buf);
if (likely(!IS_ERR_VALUE(rc)))
rc = max8971_write(io, addr, __BITS_SET(buf, mask, shift, val));
out:
return rc;
}
static inline int max8971_masked_read(struct max8971_io *io,
u8 addr, u8 mask, u8 shift, u8 *val)
{
u8 buf = 0;
int rc;
if (unlikely(!mask)) {
/* */
*val = 0;
rc = 0;
goto out;
}
rc = max8971_read(io, addr, &buf);
if (likely(!IS_ERR_VALUE(rc)))
*val = __BITS_GET(buf, mask, shift);
out:
return rc;
}
