On Sun, 19 Feb 2017, sayli karnik wrote:
> Use GENMASK() macro for left shifting integers.
> Done using coccinelle:
> @@ int a,b; @@
>
> -(a << b)
> +GENMASK(a, b)
>
> Signed-off-by: sayli karnik <karniksayli1995@xxxxxxxxx>
> ---
> drivers/staging/iio/cdc/ad7152.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/staging/iio/cdc/ad7152.c b/drivers/staging/iio/cdc/ad7152.c
> index 0c97d5a..988b89b 100644
> --- a/drivers/staging/iio/cdc/ad7152.c
> +++ b/drivers/staging/iio/cdc/ad7152.c
> @@ -48,27 +48,27 @@
>
> /* Setup Register Bit Designations (AD7152_REG_CHx_SETUP) */
> #define AD7152_SETUP_CAPDIFF BIT(5)
> -#define AD7152_SETUP_RANGE_2pF (0 << 6)
> +#define AD7152_SETUP_RANGE_2pF GENMASK(0, 6)
> #define AD7152_SETUP_RANGE_0_5pF BIT(6)
> -#define AD7152_SETUP_RANGE_1pF (2 << 6)
> -#define AD7152_SETUP_RANGE_4pF (3 << 6)
> +#define AD7152_SETUP_RANGE_1pF GENMASK(2, 6)
> +#define AD7152_SETUP_RANGE_4pF GENMASK(3, 6)
> #define AD7152_SETUP_RANGE(x) ((x) << 6)
I think it would be more understandable to do all of the cases in the same
way.
julia
>
> /* Config Register Bit Designations (AD7152_REG_CFG) */
> #define AD7152_CONF_CH2EN BIT(3)
> #define AD7152_CONF_CH1EN BIT(4)
> -#define AD7152_CONF_MODE_IDLE (0 << 0)
> +#define AD7152_CONF_MODE_IDLE GENMASK(0, 0)
> #define AD7152_CONF_MODE_CONT_CONV BIT(0)
> -#define AD7152_CONF_MODE_SINGLE_CONV (2 << 0)
> -#define AD7152_CONF_MODE_OFFS_CAL (5 << 0)
> -#define AD7152_CONF_MODE_GAIN_CAL (6 << 0)
> +#define AD7152_CONF_MODE_SINGLE_CONV GENMASK(2, 0)
> +#define AD7152_CONF_MODE_OFFS_CAL GENMASK(5, 0)
> +#define AD7152_CONF_MODE_GAIN_CAL GENMASK(6, 0)
>
> /* Capdac Register Bit Designations (AD7152_REG_CAPDAC_XXX) */
> #define AD7152_CAPDAC_DACEN BIT(7)
> #define AD7152_CAPDAC_DACP(x) ((x) & 0x1F)
>
> /* CFG2 Register Bit Designations (AD7152_REG_CFG2) */
> -#define AD7152_CFG2_OSR(x) (((x) & 0x3) << 4)
> +#define AD7152_CFG2_OSR(x) GENMASK(((x) & 0x3), 4)
>
> enum {
> AD7152_DATA,
> --
> 2.7.4
>
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