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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c
new file mode 100644
index 000000000..276823426
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c
@@ -0,0 +1,97 @@
+/*
+ * 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/dcb.h>
+#include <subdev/bios/conn.h>
+
+u32
+nvbios_connTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+ u32 dcb = dcb_table(bios, ver, hdr, cnt, len);
+ if (dcb && *ver >= 0x30 && *hdr >= 0x16) {
+ u32 data = nvbios_rd16(bios, dcb + 0x14);
+ if (data) {
+ *ver = nvbios_rd08(bios, data + 0);
+ *hdr = nvbios_rd08(bios, data + 1);
+ *cnt = nvbios_rd08(bios, data + 2);
+ *len = nvbios_rd08(bios, data + 3);
+ return data;
+ }
+ }
+ return 0x00000000;
+}
+
+u32
+nvbios_connTp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_connT *info)
+{
+ u32 data = nvbios_connTe(bios, ver, hdr, cnt, len);
+ memset(info, 0x00, sizeof(*info));
+ switch (!!data * *ver) {
+ case 0x30:
+ case 0x40:
+ return data;
+ default:
+ break;
+ }
+ return 0x00000000;
+}
+
+u32
+nvbios_connEe(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len)
+{
+ u8 hdr, cnt;
+ u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len);
+ if (data && idx < cnt)
+ return data + hdr + (idx * *len);
+ return 0x00000000;
+}
+
+u32
+nvbios_connEp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
+ struct nvbios_connE *info)
+{
+ u32 data = nvbios_connEe(bios, idx, ver, len);
+ memset(info, 0x00, sizeof(*info));
+ switch (!!data * *ver) {
+ case 0x30:
+ case 0x40:
+ info->type = nvbios_rd08(bios, data + 0x00);
+ info->location = nvbios_rd08(bios, data + 0x01) & 0x0f;
+ info->hpd = (nvbios_rd08(bios, data + 0x01) & 0x30) >> 4;
+ info->dp = (nvbios_rd08(bios, data + 0x01) & 0xc0) >> 6;
+ if (*len < 4)
+ return data;
+ info->hpd |= (nvbios_rd08(bios, data + 0x02) & 0x03) << 2;
+ info->dp |= nvbios_rd08(bios, data + 0x02) & 0x0c;
+ info->di = (nvbios_rd08(bios, data + 0x02) & 0xf0) >> 4;
+ info->hpd |= (nvbios_rd08(bios, data + 0x03) & 0x07) << 4;
+ info->sr = (nvbios_rd08(bios, data + 0x03) & 0x08) >> 3;
+ info->lcdid = (nvbios_rd08(bios, data + 0x03) & 0x70) >> 4;
+ return data;
+ default:
+ break;
+ }
+ return 0x00000000;
+}