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authorBen Skeggs <bskeggs@redhat.com>2013-02-16 12:01:59 +1000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-02-28 05:38:43 -0800
commitbb1a1b5a6551b6598648abeb7863778df43a5b60 (patch)
tree44cca0122d0021900112bba53b9cf7a59d789bff
parenta6ce39f8a5c3d15fe49fe632790435edd5f4dc7b (diff)
drm/nouveau/bios: store a type/mask hash in parsed dcb data
commit 8e992c8d9eebc2bd3246252ee5c0422dbbbce7ae upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h2
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c29
2 files changed, 18 insertions, 13 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h
index 9e54678a172..123270e9813 100644
--- a/drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/dcb.h
@@ -16,6 +16,8 @@ enum dcb_output_type {
struct dcb_output {
int index; /* may not be raw dcb index if merging has happened */
+ u16 hasht;
+ u16 hashm;
enum dcb_output_type type;
uint8_t i2c_index;
uint8_t heads;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dcb.c
index 73a29da0415..2d9b9d7a799 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;
}