On Mon, 2018-06-04 at 22:21 +0300, Andy Shevchenko wrote:
> > +#define I2C_INT_ENABLE 0x0000ff80
> > +#define I2C_INT_ERR 0x0000fcc0
>
> Now it looks like a flags combinations.
> For me as for reader would be better to see quickly a decoded line.
>
> My proposal is to introduce something like following
>
> _INT_ALL GENMASK()
> _INT_ENABLE (_INT_ALL & ~(_FOO | _BAR))
> _INT_ERR ... similar way as above ...
>
> What do you think?
I don't think this absolutely needs to change but yes, open coding is
error prone. However I would think it more readable to use positive
logic and just list all the bits that are *set* even if it's a bit more
text:
#define I2C_INT_ERR (I2C_INT_INV_CMD |\
I2C_INT_PARITY |\
I2C_INT_BE_OVERRUN |\
.../...)
#define I2C_INT_ENABLE (I2C_INT_ERR |\
I2C_INT_DAT_REQ |\
I2C_INT_CMD_COMP)
Note: Eddie, I notice I2C_INT_BUSY is in "ERR" but not in "ENABLE", any
reason for that ?
Cheers,
Ben.
