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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/mxm/mxms.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c
new file mode 100644
index 000000000..9abfa5e2f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mxm/mxms.c
@@ -0,0 +1,191 @@
+/*
+ * 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 "mxms.h"
+
+#define ROM16(x) get_unaligned_le16(&(x))
+#define ROM32(x) get_unaligned_le32(&(x))
+
+static u8 *
+mxms_data(struct nvkm_mxm *mxm)
+{
+ return mxm->mxms;
+
+}
+
+u16
+mxms_version(struct nvkm_mxm *mxm)
+{
+ u8 *mxms = mxms_data(mxm);
+ u16 version = (mxms[4] << 8) | mxms[5];
+ switch (version ) {
+ case 0x0200:
+ case 0x0201:
+ case 0x0300:
+ return version;
+ default:
+ break;
+ }
+
+ nvkm_debug(&mxm->subdev, "unknown version %d.%d\n", mxms[4], mxms[5]);
+ return 0x0000;
+}
+
+u16
+mxms_headerlen(struct nvkm_mxm *mxm)
+{
+ return 8;
+}
+
+u16
+mxms_structlen(struct nvkm_mxm *mxm)
+{
+ return *(u16 *)&mxms_data(mxm)[6];
+}
+
+bool
+mxms_checksum(struct nvkm_mxm *mxm)
+{
+ u16 size = mxms_headerlen(mxm) + mxms_structlen(mxm);
+ u8 *mxms = mxms_data(mxm), sum = 0;
+ while (size--)
+ sum += *mxms++;
+ if (sum) {
+ nvkm_debug(&mxm->subdev, "checksum invalid\n");
+ return false;
+ }
+ return true;
+}
+
+bool
+mxms_valid(struct nvkm_mxm *mxm)
+{
+ u8 *mxms = mxms_data(mxm);
+ if (*(u32 *)mxms != 0x5f4d584d) {
+ nvkm_debug(&mxm->subdev, "signature invalid\n");
+ return false;
+ }
+
+ if (!mxms_version(mxm) || !mxms_checksum(mxm))
+ return false;
+
+ return true;
+}
+
+bool
+mxms_foreach(struct nvkm_mxm *mxm, u8 types,
+ bool (*exec)(struct nvkm_mxm *, u8 *, void *), void *info)
+{
+ struct nvkm_subdev *subdev = &mxm->subdev;
+ u8 *mxms = mxms_data(mxm);
+ u8 *desc = mxms + mxms_headerlen(mxm);
+ u8 *fini = desc + mxms_structlen(mxm) - 1;
+ while (desc < fini) {
+ u8 type = desc[0] & 0x0f;
+ u8 headerlen = 0;
+ u8 recordlen = 0;
+ u8 entries = 0;
+
+ switch (type) {
+ case 0: /* Output Device Structure */
+ if (mxms_version(mxm) >= 0x0300)
+ headerlen = 8;
+ else
+ headerlen = 6;
+ break;
+ case 1: /* System Cooling Capability Structure */
+ case 2: /* Thermal Structure */
+ case 3: /* Input Power Structure */
+ headerlen = 4;
+ break;
+ case 4: /* GPIO Device Structure */
+ headerlen = 4;
+ recordlen = 2;
+ entries = (ROM32(desc[0]) & 0x01f00000) >> 20;
+ break;
+ case 5: /* Vendor Specific Structure */
+ headerlen = 8;
+ break;
+ case 6: /* Backlight Control Structure */
+ if (mxms_version(mxm) >= 0x0300) {
+ headerlen = 4;
+ recordlen = 8;
+ entries = (desc[1] & 0xf0) >> 4;
+ } else {
+ headerlen = 8;
+ }
+ break;
+ case 7: /* Fan Control Structure */
+ headerlen = 8;
+ recordlen = 4;
+ entries = desc[1] & 0x07;
+ break;
+ default:
+ nvkm_debug(subdev, "unknown descriptor type %d\n", type);
+ return false;
+ }
+
+ if (mxm->subdev.debug >= NV_DBG_DEBUG && (exec == NULL)) {
+ static const char * mxms_desc[] = {
+ "ODS", "SCCS", "TS", "IPS",
+ "GSD", "VSS", "BCS", "FCS",
+ };
+ u8 *dump = desc;
+ char data[32], *ptr;
+ int i, j;
+
+ for (j = headerlen - 1, ptr = data; j >= 0; j--)
+ ptr += sprintf(ptr, "%02x", dump[j]);
+ dump += headerlen;
+
+ nvkm_debug(subdev, "%4s: %s\n", mxms_desc[type], data);
+ for (i = 0; i < entries; i++, dump += recordlen) {
+ for (j = recordlen - 1, ptr = data; j >= 0; j--)
+ ptr += sprintf(ptr, "%02x", dump[j]);
+ nvkm_debug(subdev, " %s\n", data);
+ }
+ }
+
+ if (types & (1 << type)) {
+ if (!exec(mxm, desc, info))
+ return false;
+ }
+
+ desc += headerlen + (entries * recordlen);
+ }
+
+ return true;
+}
+
+void
+mxms_output_device(struct nvkm_mxm *mxm, u8 *pdata, struct mxms_odev *desc)
+{
+ u64 data = ROM32(pdata[0]);
+ if (mxms_version(mxm) >= 0x0300)
+ data |= (u64)ROM16(pdata[4]) << 32;
+
+ desc->outp_type = (data & 0x00000000000000f0ULL) >> 4;
+ desc->ddc_port = (data & 0x0000000000000f00ULL) >> 8;
+ desc->conn_type = (data & 0x000000000001f000ULL) >> 12;
+ desc->dig_conn = (data & 0x0000000000780000ULL) >> 19;
+}