Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/gpio.c
/*
* 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/gpio.h>
#include <subdev/bios/xpio.h>
u16
dcb_gpio_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
u16 data = 0x0000;
u16 dcb = dcb_table(bios, ver, hdr, cnt, len);
if (dcb) {
if (*ver >= 0x30 && *hdr >= 0x0c)
data = nvbios_rd16(bios, dcb + 0x0a);
else
if (*ver >= 0x22 && nvbios_rd08(bios, dcb - 1) >= 0x13)
data = nvbios_rd16(bios, dcb - 0x0f);
if (data) {
*ver = nvbios_rd08(bios, data + 0x00);
if (*ver < 0x30) {
*hdr = 3;
*cnt = nvbios_rd08(bios, data + 0x02);
*len = nvbios_rd08(bios, data + 0x01);
} else
if (*ver <= 0x41) {
*hdr = nvbios_rd08(bios, data + 0x01);
*cnt = nvbios_rd08(bios, data + 0x02);
*len = nvbios_rd08(bios, data + 0x03);
} else {
data = 0x0000;
}
}
}
return data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 218 | 100.00% | 4 | 100.00% |
| Total | 218 | 100.00% | 4 | 100.00% |
u16
dcb_gpio_entry(struct nvkm_bios *bios, int idx, int ent, u8 *ver, u8 *len)
{
u8 hdr, cnt, xver; /* use gpio version for xpio entry parsing */
u16 gpio;
if (!idx--)
gpio = dcb_gpio_table(bios, ver, &hdr, &cnt, len);
else
gpio = dcb_xpio_table(bios, idx, &xver, &hdr, &cnt, len);
if (gpio && ent < cnt)
return gpio + hdr + (ent * *len);
return 0x0000;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 102 | 100.00% | 4 | 100.00% |
| Total | 102 | 100.00% | 4 | 100.00% |
u16
dcb_gpio_parse(struct nvkm_bios *bios, int idx, int ent, u8 *ver, u8 *len,
struct dcb_gpio_func *gpio)
{
u16 data = dcb_gpio_entry(bios, idx, ent, ver, len);
if (data) {
if (*ver < 0x40) {
u16 info = nvbios_rd16(bios, data);
*gpio = (struct dcb_gpio_func) {
.line = (info & 0x001f) >> 0,
.func = (info & 0x07e0) >> 5,
.log[0] = (info & 0x1800) >> 11,
.log[1] = (info & 0x6000) >> 13,
.param = !!(info & 0x8000),
};
} else
if (*ver < 0x41) {
u32 info = nvbios_rd32(bios, data);
*gpio = (struct dcb_gpio_func) {
.line = (info & 0x0000001f) >> 0,
.func = (info & 0x0000ff00) >> 8,
.log[0] = (info & 0x18000000) >> 27,
.log[1] = (info & 0x60000000) >> 29,
.param = !!(info & 0x80000000),
};
} else {
u32 info = nvbios_rd32(bios, data + 0);
u8 info1 = nvbios_rd32(bios, data + 4);
*gpio = (struct dcb_gpio_func) {
.line = (info & 0x0000003f) >> 0,
.func = (info & 0x0000ff00) >> 8,
.log[0] = (info1 & 0x30) >> 4,
.log[1] = (info1 & 0xc0) >> 6,
.param = !!(info & 0x80000000),
};
}
}
return data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 300 | 90.91% | 4 | 80.00% |
| Martin Peres | 30 | 9.09% | 1 | 20.00% |
| Total | 330 | 100.00% | 5 | 100.00% |
u16
dcb_gpio_match(struct nvkm_bios *bios, int idx, u8 func, u8 line,
u8 *ver, u8 *len, struct dcb_gpio_func *gpio)
{
u8 hdr, cnt, i = 0;
u16 data;
while ((data = dcb_gpio_parse(bios, idx, i++, ver, len, gpio))) {
if ((line == 0xff || line == gpio->line) &&
(func == 0xff || func == gpio->func))
return data;
}
/* DCB 2.2, fixed TVDAC GPIO data */
if ((data = dcb_table(bios, ver, &hdr, &cnt, len))) {
if (*ver >= 0x22 && *ver < 0x30 && func == DCB_GPIO_TVDAC0) {
u8 conf = nvbios_rd08(bios, data - 5);
u8 addr = nvbios_rd08(bios, data - 4);
if (conf & 0x01) {
*gpio = (struct dcb_gpio_func) {
.func = DCB_GPIO_TVDAC0,
.line = addr >> 4,
.log[0] = !!(conf & 0x02),
.log[1] = !(conf & 0x02),
};
*ver = 0x00;
return data;
}
}
}
return 0x0000;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 230 | 100.00% | 6 | 100.00% |
| Total | 230 | 100.00% | 6 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Skeggs | 863 | 96.64% | 7 | 87.50% |
| Martin Peres | 30 | 3.36% | 1 | 12.50% |
| Total | 893 | 100.00% | 8 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.