drm/nouveau: match U/DP script against SOR link

It appears version 0x21 'U' and 'd' tables require us to take the SOR link
into account when selecting the appropriate table for a particular output.

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

1 files changed, 20 insertions, 3 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 9ba2deaadcc..47a27a4728d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -3920,7 +3920,8 @@ int nouveau_bios_parse_lvds_table(struct drm_device *dev, int pxclk, bool *dl, b
 
 static uint8_t *
 bios_output_config_match(struct drm_device *dev, struct dcb_entry *dcbent,
-                         uint16_t record, int record_len, int record_nr)
+                         uint16_t record, int record_len, int record_nr,
+                         bool match_link)
 {
         struct drm_nouveau_private *dev_priv = dev->dev_private;
         struct nvbios *bios = &dev_priv->vbios;
@@ -3928,12 +3929,28 @@ bios_output_config_match(struct drm_device *dev, struct dcb_entry *dcbent,
         uint16_t table;
         int i, v;
 
+        switch (dcbent->type) {
+        case OUTPUT_TMDS:
+        case OUTPUT_LVDS:
+        case OUTPUT_DP:
+                break;
+        default:
+                match_link = false;
+                break;
+        }
+
         for (i = 0; i < record_nr; i++, record += record_len) {
                 table = ROM16(bios->data[record]);
                 if (!table)
                         continue;
                 entry = ROM32(bios->data[table]);
 
+                if (match_link) {
+                        v = (entry & 0x00c00000) >> 22;
+                        if (!(v & dcbent->sorconf.link))
+                                continue;
+                }
+
                 v = (entry & 0x000f0000) >> 16;
                 if (!(v & dcbent->or))
                         continue;
@@ -3975,7 +3992,7 @@ nouveau_bios_dp_table(struct drm_device *dev, struct dcb_entry *dcbent,
         *length = table[4];
         return bios_output_config_match(dev, dcbent,
                                         bios->display.dp_table_ptr + table[1],
-                                        table[2], table[3]);
+                                        table[2], table[3], table[0] >= 0x21);
 }
 
 int
@@ -4064,7 +4081,7 @@ nouveau_bios_run_display_table(struct drm_device *dev, struct dcb_entry *dcbent,
                         dcbent->type, dcbent->location, dcbent->or);
         otable = bios_output_config_match(dev, dcbent, table[1] +
                                           bios->display.script_table_ptr,
-                                          table[2], table[3]);
+                                          table[2], table[3], table[0] >= 0x21);
         if (!otable) {
                 NV_ERROR(dev, "Couldn't find matching output script table\n");
                 return 1;