diff options
| author |   Ben Skeggs <bskeggs@redhat.com> | 2013-02-16 12:01:59 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-02-20 16:00:59 +1000 |
| commit | 8e992c8d9eebc2bd3246252ee5c0422dbbbce7ae (patch) | |
| tree | 5f04740005c1ae59d11699eb9c4589c7e9e6bb0e /drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c | |
| parent | drm/nouveau/i2c: extend type to 16-bits, add lookup-by-type function (diff) | |
| download | linux-dev-8e992c8d9eebc2bd3246252ee5c0422dbbbce7ae.tar.xz linux-dev-8e992c8d9eebc2bd3246252ee5c0422dbbbce7ae.zip | |
drm/nouveau/bios: store a type/mask hash in parsed dcb data
Matches format used by a couple of other vbios tables, useful
to have laying around already calculated.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c index 73a29da0415f..2d9b9d7a7992 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c @@ -107,6 +107,18 @@ dcb_outp(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len) return 0x0000; } +static inline u16 +dcb_outp_hasht(struct dcb_output *outp) +{ + return (outp->extdev << 8) | (outp->location << 4) | outp->type; +} + +static inline u16 +dcb_outp_hashm(struct dcb_output *outp) +{ + return (outp->heads << 8) | (outp->link << 6) | outp->or; +} + u16 dcb_outp_parse(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len, struct dcb_output *outp) @@ -143,29 +155,20 @@ dcb_outp_parse(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len, break; } } + + outp->hasht = dcb_outp_hasht(outp); + outp->hashm = dcb_outp_hashm(outp); } return dcb; } -static inline u16 -dcb_outp_hasht(struct dcb_output *outp) -{ - return (outp->location << 4) | outp->type; -} - -static inline u16 -dcb_outp_hashm(struct dcb_output *outp) -{ - return (outp->heads << 8) | (outp->link << 6) | outp->or; -} - u16 dcb_outp_match(struct nouveau_bios *bios, u16 type, u16 mask, u8 *ver, u8 *len, struct dcb_output *outp) { u16 dcb, idx = 0; while ((dcb = dcb_outp_parse(bios, idx++, ver, len, outp))) { - if (dcb_outp_hasht(outp) == type) { + if ((dcb_outp_hasht(outp) & 0x00ff) == (type & 0x00ff)) { if ((dcb_outp_hashm(outp) & mask) == mask) break; } |