diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c index 7d750382a833..0fd87df99dd6 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c @@ -64,7 +64,7 @@ dcb_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) } } else if (*ver >= 0x15) { - if (!nv_strncmp(bios, dcb - 7, 7, "DEV_REC")) { + if (!nv_memcmp(bios, dcb - 7, "DEV_REC", 7)) { u16 i2c = nv_ro16(bios, dcb + 2); *hdr = 4; *cnt = (i2c - dcb) / 10; @@ -107,6 +107,69 @@ dcb_outp(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len) return 0x0000; } +u16 +dcb_outp_parse(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len, + struct dcb_output *outp) +{ + u16 dcb = dcb_outp(bios, idx, ver, len); + if (dcb) { + if (*ver >= 0x20) { + u32 conn = nv_ro32(bios, dcb + 0x00); + outp->or = (conn & 0x0f000000) >> 24; + outp->location = (conn & 0x00300000) >> 20; + outp->bus = (conn & 0x000f0000) >> 16; + outp->connector = (conn & 0x0000f000) >> 12; + outp->heads = (conn & 0x00000f00) >> 8; + outp->i2c_index = (conn & 0x000000f0) >> 4; + outp->type = (conn & 0x0000000f); + outp->link = 0; + } else { + dcb = 0x0000; + } + + if (*ver >= 0x40) { + u32 conf = nv_ro32(bios, dcb + 0x04); + switch (outp->type) { + case DCB_OUTPUT_TMDS: + case DCB_OUTPUT_LVDS: + case DCB_OUTPUT_DP: + outp->link = (conf & 0x00000030) >> 4; + outp->sorconf.link = outp->link; /*XXX*/ + break; + default: + break; + } + } + } + return dcb; +} + +static inline u16 +dcb_outp_hasht(struct dcb_output *outp) +{ + return 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_hashm(outp) & mask) == mask) + break; + } + } + return dcb; +} + int dcb_outp_foreach(struct nouveau_bios *bios, void *data, int (*exec)(struct nouveau_bios *, void *, int, u16)) |