drm/radeon/kms: add ioport register access
This is required for the NB_MISC regs on rs780/rs880 which
means HDMI/DVI/DP ports using PCIEPHY won't work without
it. It might also help with s/r (asic init) issues on other
atombios cards.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=28774
and similar issues reported by Alberto Milone.
[airlied: Squash io fix patch]
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index bded870..8e421f6 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -108,12 +108,11 @@
base++;
break;
case ATOM_IIO_READ:
- temp = ctx->card->reg_read(ctx->card, CU16(base + 1));
+ temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1));
base += 3;
break;
case ATOM_IIO_WRITE:
- (void)ctx->card->reg_read(ctx->card, CU16(base + 1));
- ctx->card->reg_write(ctx->card, CU16(base + 1), temp);
+ ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp);
base += 3;
break;
case ATOM_IIO_CLEAR:
