drm/nouveau: implement devinit subdev, and new init table parser
v2:
- make sure not to execute display scripts unless resuming
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c b/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
new file mode 100644
index 0000000..3cbc0f3
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs
+ */
+
+
+#include "subdev/bios.h"
+#include "subdev/bios/bit.h"
+#include "subdev/bios/dcb.h"
+#include "subdev/bios/dp.h"
+
+u16
+dp_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ struct bit_entry bit_d;
+
+ if (!bit_entry(bios, 'd', &bit_d)) {
+ if (bit_d.version == 1) {
+ u16 data = nv_ro16(bios, bit_d.offset);
+ if (data) {
+ *ver = nv_ro08(bios, data + 0);
+ *hdr = nv_ro08(bios, data + 1);
+ *len = nv_ro08(bios, data + 2);
+ *cnt = nv_ro08(bios, data + 3);
+ return data;
+ }
+ }
+ }
+
+ return 0x0000;
+}
+
+u16
+dp_outp(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len)
+{
+ u8 hdr, cnt;
+ u16 table = dp_table(bios, ver, &hdr, &cnt, len);
+ if (table && idx < cnt)
+ return nv_ro16(bios, table + hdr + (idx * *len));
+ return 0xffff;
+}
+
+u16
+dp_outp_match(struct nouveau_bios *bios, struct dcb_output *outp,
+ u8 *ver, u8 *len)
+{
+ u8 idx = 0;
+ u16 data;
+ while ((data = dp_outp(bios, idx++, ver, len)) != 0xffff) {
+ if (data) {
+ u32 hash = nv_ro32(bios, data);
+ if (dcb_hash_match(outp, hash))
+ return data;
+ }
+ }
+ return 0x0000;
+}