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| author | Alex Deucher <alexdeucher@gmail.com> | 2009-11-24 13:32:59 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-12-08 10:22:44 +1000 |
| commit | 5801ead6bd6bddf5505d6eab55f84d8ee8106cd8 (patch) | |
| tree | 60cc75789c50aab78299499e05411c9140616bc2 /drivers/gpu/drm/radeon/atom.c | |
| parent | f92a8b6758bdc0f277c4f42aa7d736a205ac9ded (diff) | |
| download | blackbird-op-linux-5801ead6bd6bddf5505d6eab55f84d8ee8106cd8.tar.gz blackbird-op-linux-5801ead6bd6bddf5505d6eab55f84d8ee8106cd8.zip | |
drm/radeon/kms: add support for DP modesetting
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/atom.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atom.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 85abc0850e7f..6578d19dff93 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -1214,3 +1214,28 @@ void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, *crev = CU8(idx + 3); return; } + +int atom_allocate_fb_scratch(struct atom_context *ctx) +{ + int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); + uint16_t data_offset; + int usage_bytes; + struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; + + atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset); + + firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); + + DRM_DEBUG("atom firmware requested %08x %dkb\n", + firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware, + firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb); + + usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024; + if (usage_bytes == 0) + usage_bytes = 20 * 1024; + /* allocate some scratch memory */ + ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); + if (!ctx->scratch) + return -ENOMEM; + return 0; +} |
