drm/nv50/disp: fix selection of bios script for analog outputs

Analog output number was overwritten by value from digital output path.
Fix it.

Fixes resume from s2ram: https://bugs.freedesktop.org/show_bug.cgi?id=58729
(as stumbled on by J Binder, Pontus Fuchs and me)
Fixes blank screen on module load (reported by Sune Mølgaard).

Fixes regression from commit 186ecad21c854385823a430b1402053ae7fd59dc
("drm/nv50/disp: move remaining interrupt handling into core").

Reported-by: J Binder <wheel@herr-der-mails.de>
Reported-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Reported-by: Sune Mølgaard <sune@molgaard.org>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Tested-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Tested-by: Sune Mølgaard <sune@molgaard.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index 0f09af1..ca1a7d7 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -851,20 +851,23 @@ exec_script(struct nv50_disp_priv *priv, int head, int id)
        for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
                ctrl = nv_rd32(priv, 0x610b5c + (i * 8));
 
-       if (nv_device(priv)->chipset  < 0x90 ||
-           nv_device(priv)->chipset == 0x92 ||
-           nv_device(priv)->chipset == 0xa0) {
-               for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
-                       ctrl = nv_rd32(priv, 0x610b74 + (i * 8));
-               i += 3;
-       } else {
-               for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
-                       ctrl = nv_rd32(priv, 0x610798 + (i * 8));
-               i += 3;
+       if (!(ctrl & (1 << head))) {
+               if (nv_device(priv)->chipset  < 0x90 ||
+                   nv_device(priv)->chipset == 0x92 ||
+                   nv_device(priv)->chipset == 0xa0) {
+                       for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+                               ctrl = nv_rd32(priv, 0x610b74 + (i * 8));
+                       i += 4;
+               } else {
+                       for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+                               ctrl = nv_rd32(priv, 0x610798 + (i * 8));
+                       i += 4;
+               }
        }
 
        if (!(ctrl & (1 << head)))
                return false;
+       i--;
 
        data = exec_lookup(priv, head, i, ctrl, &dcb, &ver, &hdr, &cnt, &len, &info);
        if (data) {
@@ -898,20 +901,23 @@ exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk,
        for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
                ctrl = nv_rd32(priv, 0x610b58 + (i * 8));
 
-       if (nv_device(priv)->chipset  < 0x90 ||
-           nv_device(priv)->chipset == 0x92 ||
-           nv_device(priv)->chipset == 0xa0) {
-               for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
-                       ctrl = nv_rd32(priv, 0x610b70 + (i * 8));
-               i += 3;
-       } else {
-               for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
-                       ctrl = nv_rd32(priv, 0x610794 + (i * 8));
-               i += 3;
+       if (!(ctrl & (1 << head))) {
+               if (nv_device(priv)->chipset  < 0x90 ||
+                   nv_device(priv)->chipset == 0x92 ||
+                   nv_device(priv)->chipset == 0xa0) {
+                       for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+                               ctrl = nv_rd32(priv, 0x610b70 + (i * 8));
+                       i += 4;
+               } else {
+                       for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+                               ctrl = nv_rd32(priv, 0x610794 + (i * 8));
+                       i += 4;
+               }
        }
 
        if (!(ctrl & (1 << head)))
                return 0x0000;
+       i--;
 
        data = exec_lookup(priv, head, i, ctrl, outp, &ver, &hdr, &cnt, &len, &info1);
        if (!data)