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drm/i915: Introduce INTEL_GEN_MASK 

Split INTEL_GEN_MASK out of IS_GEN macro, and make it usable
within static declarations (unlike compound statements).

v2:
- s/combound/compound/ (Tvrtko)
- Fix whitespace (yes, we need automatic checkpatch.pl)

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170913115255.13851-1-joonas.lahtinen@linux.intel.com
This commit is contained in:
Joonas Lahtinen 2017-09-13 14:52:54 +03:00
parent 0d0c279405
commit fe52e597fd
1 changed files with 10 additions and 12 deletions
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22
drivers/gpu/drm/i915/i915_drv.h
View File

@ -2881,23 +2881,21 @@ intel_info(const struct drm_i915_private *dev_priv)
#define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
#define GEN_FOREVER (0)
#define INTEL_GEN_MASK(s, e) ( \
BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
GENMASK((e) != GEN_FOREVER ? (e) - 1 : BITS_PER_LONG - 1, \
(s) != GEN_FOREVER ? (s) - 1 : 0) \
)
/*
* Returns true if Gen is in inclusive range [Start, End].
*
* Use GEN_FOREVER for unbound start and or end.
*/
#define IS_GEN(dev_priv, s, e) ({ \
unsigned int __s = (s), __e = (e); \
BUILD_BUG_ON(!__builtin_constant_p(s)); \
BUILD_BUG_ON(!__builtin_constant_p(e)); \
if ((__s) != GEN_FOREVER) \
__s = (s) - 1; \
if ((__e) == GEN_FOREVER) \
__e = BITS_PER_LONG - 1; \
else \
__e = (e) - 1; \
!!((dev_priv)->info.gen_mask & GENMASK((__e), (__s))); \
})
#define IS_GEN(dev_priv, s, e) \
(!!((dev_priv)->info.gen_mask & INTEL_GEN_MASK((s), (e))))
/*
* Return true if revision is in range [since,until] inclusive.