drm/nouveau/bios: add support for dp 4.1

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
index f309dd6..cef53f8 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
@@ -41,6 +41,7 @@ nvbios_dp_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
                                case 0x21:
                                case 0x30:
                                case 0x40:
+                               case 0x41:
                                        *hdr = nv_ro08(bios, data + 0x01);
                                        *len = nv_ro08(bios, data + 0x02);
                                        *cnt = nv_ro08(bios, data + 0x03);
@@ -70,6 +71,7 @@ nvbios_dpout_entry(struct nouveau_bios *bios, u8 idx,
                        *cnt = nv_ro08(bios, outp + 0x04);
                        break;
                case 0x40:
+               case 0x41:
                        *hdr = nv_ro08(bios, data + 0x04);
                        *cnt = 0;
                        *len = 0;
@@ -108,6 +110,7 @@ nvbios_dpout_parse(struct nouveau_bios *bios, u8 idx,
                                info->script[4] = nv_ro16(bios, data + 0x10);
                        break;
                case 0x40:
+               case 0x41:
                        info->flags     = nv_ro08(bios, data + 0x04);
                        info->script[0] = nv_ro16(bios, data + 0x05);
                        info->script[1] = nv_ro16(bios, data + 0x07);
@@ -172,10 +175,11 @@ nvbios_dpcfg_parse(struct nouveau_bios *bios, u16 outp, u8 idx,
                        break;
                case 0x30:
                case 0x40:
+               case 0x41:
                        info->pc    = nv_ro08(bios, data + 0x00);
                        info->dc    = nv_ro08(bios, data + 0x01);
                        info->pe    = nv_ro08(bios, data + 0x02);
-                       info->tx_pu = nv_ro08(bios, data + 0x03);
+                       info->tx_pu = nv_ro08(bios, data + 0x03) & 0x0f;
                        break;
                default:
                        data = 0x0000;
@@ -194,6 +198,10 @@ nvbios_dpcfg_match(struct nouveau_bios *bios, u16 outp, u8 pc, u8 vs, u8 pe,
        u16 data;
 
        if (*ver >= 0x30) {
+               /*XXX: there's a second set of these on at least 4.1, that
+                *     i've witnessed nvidia using instead of the first
+                *     on gm204.  figure out what/why
+                */
                const u8 vsoff[] = { 0, 4, 7, 9 };
                idx = (pc * 10) + vsoff[vs] + pe;
        } else {