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/*
* 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/conn.h>
u32
nvbios_connTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
u32 dcb = dcb_table(bios, ver, hdr, cnt, len);
if (dcb && *ver >= 0x30 && *hdr >= 0x16) {
u32 data = nvbios_rd16(bios, dcb + 0x14);
if (data) {
*ver = nvbios_rd08(bios, data + 0);
*hdr = nvbios_rd08(bios, data + 1);
*cnt = nvbios_rd08(bios, data + 2);
*len = nvbios_rd08(bios, data + 3);
return data;
}
}
return 0x00000000;
}
u32
nvbios_connTp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_connT *info)
{
u32 data = nvbios_connTe(bios, ver, hdr, cnt, len);
memset(info, 0x00, sizeof(*info));
switch (!!data * *ver) {
case 0x30:
case 0x40:
return data;
default:
break;
}
return 0x00000000;
}
u32
nvbios_connEe(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len)
{
u8 hdr, cnt;
u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len);
if (data && idx < cnt)
return data + hdr + (idx * *len);
return 0x00000000;
}
u32
nvbios_connEp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
struct nvbios_connE *info)
{
u32 data = nvbios_connEe(bios, idx, ver, len);
memset(info, 0x00, sizeof(*info));
switch (!!data * *ver) {
case 0x30:
case 0x40:
info->type = nvbios_rd08(bios, data + 0x00);
info->location = nvbios_rd08(bios, data + 0x01) & 0x0f;
info->hpd = (nvbios_rd08(bios, data + 0x01) & 0x30) >> 4;
info->dp = (nvbios_rd08(bios, data + 0x01) & 0xc0) >> 6;
if (*len < 4)
return data;
info->hpd |= (nvbios_rd08(bios, data + 0x02) & 0x03) << 2;
info->dp |= nvbios_rd08(bios, data + 0x02) & 0x0c;
info->di = (nvbios_rd08(bios, data + 0x02) & 0xf0) >> 4;
info->hpd |= (nvbios_rd08(bios, data + 0x03) & 0x07) << 4;
info->sr = (nvbios_rd08(bios, data + 0x03) & 0x08) >> 3;
info->lcdid = (nvbios_rd08(bios, data + 0x03) & 0x70) >> 4;
return data;
default:
break;
}
return 0x00000000;
}
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