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drm/radeon/kms: add ioport register access

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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>
This commit is contained in:
Alex Deucher
2010-06-30 11:52:50 -04:00
committed by Dave Airlie
parent fe50ac78a6
commit 351a52a241
4 changed files with 68 additions and 4 deletions
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5
drivers/gpu/drm/radeon/atom.c
View File

@@ -108,12 +108,11 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
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: