Files
linux/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c
Linus Torvalds bf4afc53b7 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21 17:09:51 -08:00

129 lines
3.5 KiB
C

/*
* 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_objs(struct pwr_rail_t, cnt);
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;
}