Start interpreting VBT information with the goal of pulling out LVDS timings

for panel fitting.

1 files changed, 50 insertions, 0 deletions

diff --git a/src/i830_bios.h b/src/i830_bios.h
new file mode 100644
index 00000000..ed3f1826
--- /dev/null
+++ b/src/i830_bios.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2006 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+struct vbt_header {
+    char signature[20];			/**< Always 'BIOS_DATA_BLOCK' */
+    CARD16 version;			/**< decimal */
+    CARD16 header_size;			/**< in bytes */
+    CARD16 vbt_size;			/**< in bytes */
+    CARD8 vbt_checksum;
+    CARD8 reserved0;
+    CARD32 bdb_offset;			/**< from beginning of VBT */
+    CARD32 aim1_offset;			/**< from beginning of VBT */
+    CARD32 aim2_offset;			/**< from beginning of VBT */
+    CARD32 aim3_offset;			/**< from beginning of VBT */
+    CARD32 aim4_offset;			/**< from beginning of VBT */
+};
+
+struct bdb_header {
+    char signature[16];			/**< Always 'BIOS_DATA_BLOCK' */
+    CARD16 version;			/**< decimal */
+    CARD16 header_size;			/**< in bytes */
+    CARD16 bdb_size;			/**< in bytes */
+};
+
+Bool
+i830GetLVDSInfoFromBIOS(ScrnInfoPtr pScrn);