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drm/radeon/kms: add support to atom parser for FB read/write

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FB read/write really doesn't need to access the actual VRAM, we
can just use a scratch area. This is required for using atom displayport
calls later.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-11-17 06:29:46 +10:00
parent f846761853
commit d904ef9b00
3 changed files with 8 additions and 4 deletions
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8
drivers/gpu/drm/radeon/atom.c
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@@ -263,10 +263,10 @@ static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
case ATOM_ARG_FB:
idx = U8(*ptr);
(*ptr)++;
val = gctx->scratch[((gctx->fb_base + idx) / 4)];
if (print)
DEBUG("FB[0x%02X]", idx);
printk(KERN_INFO "FB access is not implemented.\n");
return 0;
break;
case ATOM_ARG_IMM:
switch (align) {
case ATOM_SRC_DWORD:
@@ -488,9 +488,9 @@ static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
case ATOM_ARG_FB:
idx = U8(*ptr);
(*ptr)++;
gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
DEBUG("FB[0x%02X]", idx);
printk(KERN_INFO "FB access is not implemented.\n");
return;
break;
case ATOM_ARG_PLL:
idx = U8(*ptr);
(*ptr)++;