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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/iccsense.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/bios/iccsense.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
new file mode 100644
index 000000000..dea444d48
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2015 Martin Peres
+ *
+ * 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: Martin Peres
+ */
+#include <subdev/bios.h>
+#include <subdev/bios/bit.h>
+#include <subdev/bios/extdev.h>
+#include <subdev/bios/iccsense.h>
+
+static u32
+nvbios_iccsense_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt,
+ u8 *len)
+{
+ struct bit_entry bit_P;
+ u32 iccsense;
+
+ if (bit_entry(bios, 'P', &bit_P) || bit_P.version != 2 ||
+ bit_P.length < 0x2c)
+ return 0;
+
+ iccsense = nvbios_rd32(bios, bit_P.offset + 0x28);
+ if (!iccsense)
+ return 0;
+
+ *ver = nvbios_rd08(bios, iccsense + 0);
+ switch (*ver) {
+ case 0x10:
+ case 0x20:
+ *hdr = nvbios_rd08(bios, iccsense + 1);
+ *len = nvbios_rd08(bios, iccsense + 2);
+ *cnt = nvbios_rd08(bios, iccsense + 3);
+ return iccsense;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+int
+nvbios_iccsense_parse(struct nvkm_bios *bios, struct nvbios_iccsense *iccsense)
+{
+ struct nvkm_subdev *subdev = &bios->subdev;
+ u8 ver, hdr, cnt, len, i;
+ u32 table, entry;
+
+ table = nvbios_iccsense_table(bios, &ver, &hdr, &cnt, &len);
+ if (!table || !cnt)
+ return -EINVAL;
+
+ if (ver != 0x10 && ver != 0x20) {
+ nvkm_error(subdev, "ICCSENSE version 0x%02x unknown\n", ver);
+ return -EINVAL;
+ }
+
+ iccsense->nr_entry = cnt;
+ iccsense->rail = kmalloc_array(cnt, sizeof(struct pwr_rail_t),
+ GFP_KERNEL);
+ if (!iccsense->rail)
+ return -ENOMEM;
+
+ for (i = 0; i < cnt; ++i) {
+ struct nvbios_extdev_func extdev;
+ struct pwr_rail_t *rail = &iccsense->rail[i];
+ u8 res_start = 0;
+ int r;
+
+ entry = table + hdr + i * len;
+
+ switch(ver) {
+ case 0x10:
+ if ((nvbios_rd08(bios, entry + 0x1) & 0xf8) == 0xf8)
+ rail->mode = 1;
+ else
+ rail->mode = 0;
+ rail->extdev_id = nvbios_rd08(bios, entry + 0x2);
+ res_start = 0x3;
+ break;
+ case 0x20:
+ rail->mode = nvbios_rd08(bios, entry);
+ rail->extdev_id = nvbios_rd08(bios, entry + 0x1);
+ res_start = 0x5;
+ break;
+ }
+
+ if (nvbios_extdev_parse(bios, rail->extdev_id, &extdev))
+ continue;
+
+ switch (extdev.type) {
+ case NVBIOS_EXTDEV_INA209:
+ case NVBIOS_EXTDEV_INA219:
+ rail->resistor_count = 1;
+ break;
+ case NVBIOS_EXTDEV_INA3221:
+ rail->resistor_count = 3;
+ break;
+ default:
+ rail->resistor_count = 0;
+ break;
+ }
+
+ for (r = 0; r < rail->resistor_count; ++r) {
+ rail->resistors[r].mohm = nvbios_rd08(bios, entry + res_start + r * 2);
+ rail->resistors[r].enabled = !(nvbios_rd08(bios, entry + res_start + r * 2 + 1) & 0x40);
+ }
+ rail->config = nvbios_rd16(bios, entry + res_start + rail->resistor_count * 2);
+ }
+
+ return 0;
+}