Damien Lespiau af76ae447d drm/i915: Use a macro to express the range of valid gens for reg_read ... The reg_read whitelist has a gen bitmask to code the gens we're allowing the register to be read on. Until now, it was a literal, but we can be a bit more expressive. To ease the review, a small test program: $ cat bit-range.c #include <stdio.h> #include <stdint.h> #define U32_C(x) x ## U #define GENMASK(h, l) (((U32_C(1) << ((h) - (l) + 1)) - 1) << (l)) #define GEN_RANGE(l, h) GENMASK(h, l) int main(int argc, char **argv) { printf("0x%08x\n", GEN_RANGE(1, 1)); printf("0x%08x\n", GEN_RANGE(1, 2)); printf("0x%08x\n", GEN_RANGE(4, 4)); printf("0x%08x\n", GEN_RANGE(4, 5)); printf("0x%08x\n", GEN_RANGE(1, 31)); printf("0x%08x\n", GEN_RANGE(4, 8)); return 0; } $ ./bit-range 0x00000002 0x00000006 0x00000010 0x00000030 0xfffffffe 0x000001f0 Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2014-04-01 22:58:23 +02:00
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drm	drm/i915: Use a macro to express the range of valid gens for reg_read	2014-04-01 22:58:23 +02:00
host1x	gpu: host1x: do not check previously handled gathers	2014-02-12 07:50:37 +01:00
vga	vgaarb: Fix VGA decodes changes	2013-09-03 19:17:59 +02:00
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