diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg_defs.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg_defs.h | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg_defs.h b/drivers/gpu/drm/i915/i915_reg_defs.h index f1859046a9c4..be43580a6979 100644 --- a/drivers/gpu/drm/i915/i915_reg_defs.h +++ b/drivers/gpu/drm/i915/i915_reg_defs.h @@ -98,6 +98,34 @@ */ #define REG_FIELD_GET64(__mask, __val) ((u64)FIELD_GET(__mask, __val)) +#define __MASKED_FIELD(mask, value) ((mask) << 16 | (value)) +#define _MASKED_FIELD(mask, value) ({ \ + if (__builtin_constant_p(mask)) \ + BUILD_BUG_ON_MSG(((mask) & 0xffff0000), "Incorrect mask"); \ + if (__builtin_constant_p(value)) \ + BUILD_BUG_ON_MSG((value) & 0xffff0000, "Incorrect value"); \ + if (__builtin_constant_p(mask) && __builtin_constant_p(value)) \ + BUILD_BUG_ON_MSG((value) & ~(mask), \ + "Incorrect value for mask"); \ + __MASKED_FIELD(mask, value); }) +#define _MASKED_BIT_ENABLE(a) ({ typeof(a) _a = (a); _MASKED_FIELD(_a, _a); }) +#define _MASKED_BIT_DISABLE(a) (_MASKED_FIELD((a), 0)) + +/* + * Given the first two numbers __a and __b of arbitrarily many evenly spaced + * numbers, pick the 0-based __index'th value. + * + * Always prefer this over _PICK() if the numbers are evenly spaced. + */ +#define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a))) + +/* + * Given the arbitrary numbers in varargs, pick the 0-based __index'th number. + * + * Always prefer _PICK_EVEN() over this if the numbers are evenly spaced. + */ +#define _PICK(__index, ...) (((const u32 []){ __VA_ARGS__ })[__index]) + typedef struct { u32 reg; } i915_reg_t; @@ -120,6 +148,4 @@ typedef struct { #define i915_mmio_reg_equal(a, b) (i915_mmio_reg_offset(a) == i915_mmio_reg_offset(b)) #define i915_mmio_reg_valid(r) (!i915_mmio_reg_equal(r, INVALID_MMIO_REG)) -#define VLV_DISPLAY_BASE 0x180000 - #endif /* __I915_REG_DEFS__ */ |