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ARM: keystone2: Convert BOOTBITMASK to static inline function

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BOOTBITMASK is almost impossible to decode, so convert it into a simpler
static line functions of equivalent solution.

Reported-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Nishanth Menon 2016-03-15 10:25:51 -05:00 committed by Tom Rini
parent 69067a34b1
commit bc69b505f0
1 changed files with 9 additions and 5 deletions
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14
arch/arm/mach-keystone/include/mach/psc_defs.h
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@ -27,12 +27,16 @@
#define PSC_REG_MDSTAT(x) (0x800 + (4 * (x)))
#define PSC_REG_MDCTL(x) (0xa00 + (4 * (x)))
#define BOOTBITMASK(x, y) ((((((u32)1 << (((u32)x) - ((u32)y) + (u32)1)) - \
(u32)1)) << ((u32)y)))
#define BOOT_READ_BITFIELD(z, x, y) ((((u32)z) & BOOTBITMASK(x, y)) >> (y))
#define BOOT_SET_BITFIELD(z, f, x, y) ((((u32)z) & ~BOOTBITMASK(x, y)) | \
((((u32)f) << (y)) & BOOTBITMASK(x, y)))
static inline u32 _boot_bit_mask(u32 x, u32 y)
{
u32 val = (1 << (x - y + 1)) - 1;
return val << y;
}
#define BOOT_READ_BITFIELD(z, x, y) ((((u32)z) & _boot_bit_mask(x, y)) >> (y))
#define BOOT_SET_BITFIELD(z, f, x, y) ((((u32)z) & ~_boot_bit_mask(x, y)) | \
((((u32)f) << (y)) & _boot_bit_mask(x, y)))
/* PDCTL */
#define PSC_REG_PDCTL_SET_NEXT(x, y) BOOT_SET_BITFIELD((x), (y), 0, 0)