151 lines
4.2 KiB
C
151 lines
4.2 KiB
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|