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authorAlex Deucher <alexdeucher@gmail.com>2009-11-24 13:32:59 -0500
committerDave Airlie <airlied@redhat.com>2009-12-08 10:22:44 +1000
commit5801ead6bd6bddf5505d6eab55f84d8ee8106cd8 (patch)
tree60cc75789c50aab78299499e05411c9140616bc2 /drivers/gpu/drm/radeon/atom.c
parentf92a8b6758bdc0f277c4f42aa7d736a205ac9ded (diff)
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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.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 85abc0850e7..6578d19dff9 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;
+}