drm/nouveau: construct a connector table for cards that lack a real one

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

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 8dd97b2..bcf843f 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -5754,7 +5754,7 @@ static void
 fixup_legacy_connector(struct nvbios *bios)
 {
        struct dcb_table *dcb = &bios->dcb;
-       int high = 0, i;
+       int i, i2c, i2c_conn[DCB_MAX_NUM_I2C_ENTRIES] = { };
 
        /*
         * DCB 3.0 also has the table in most cases, but there are some cards
@@ -5765,6 +5765,8 @@ fixup_legacy_connector(struct nvbios *bios)
        if (dcb->version >= 0x40)
                return;
 
+       dcb->connector.entries = 0;
+
        /*
         * No known connector info before v3.0, so make it up.  the rule here
         * is: anything on the same i2c bus is considered to be on the same
@@ -5772,30 +5774,31 @@ fixup_legacy_connector(struct nvbios *bios)
         * its own unique connector index.
         */
        for (i = 0; i < dcb->entries; i++) {
-               if (dcb->entry[i].i2c_index == 0xf)
-                       continue;
-
                /*
                 * Ignore the I2C index for on-chip TV-out, as there
                 * are cards with bogus values (nv31m in bug 23212),
                 * and it's otherwise useless.
                 */
                if (dcb->entry[i].type == OUTPUT_TV &&
-                   dcb->entry[i].location == DCB_LOC_ON_CHIP) {
+                   dcb->entry[i].location == DCB_LOC_ON_CHIP)
                        dcb->entry[i].i2c_index = 0xf;
+               i2c = dcb->entry[i].i2c_index;
+
+               if (i2c_conn[i2c]) {
+                       dcb->entry[i].connector = i2c_conn[i2c] - 1;
                        continue;
                }
 
-               dcb->entry[i].connector = dcb->entry[i].i2c_index;
-               if (dcb->entry[i].connector > high)
-                       high = dcb->entry[i].connector;
+               dcb->entry[i].connector = dcb->connector.entries++;
+               if (i2c != 0xf)
+                       i2c_conn[i2c] = dcb->connector.entries;
        }
 
-       for (i = 0; i < dcb->entries; i++) {
-               if (dcb->entry[i].i2c_index != 0xf)
-                       continue;
-
-               dcb->entry[i].connector = ++high;
+       /* Fake the connector table as well as just connector indices */
+       for (i = 0; i < dcb->connector.entries; i++) {
+               dcb->connector.entry[i].index = i;
+               dcb->connector.entry[i].type = divine_connector_type(bios, i);
+               dcb->connector.entry[i].gpio_tag = 0xff;
        }
 }