/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <subdev/bios.h>
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#include <subdev/bios/dcb.h>
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#include <subdev/bios/conn.h>
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u32
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nvbios_connTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
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{
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u32 dcb = dcb_table(bios, ver, hdr, cnt, len);
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if (dcb && *ver >= 0x30 && *hdr >= 0x16) {
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u32 data = nvbios_rd16(bios, dcb + 0x14);
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if (data) {
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*ver = nvbios_rd08(bios, data + 0);
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*hdr = nvbios_rd08(bios, data + 1);
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*cnt = nvbios_rd08(bios, data + 2);
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*len = nvbios_rd08(bios, data + 3);
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return data;
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}
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}
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return 0x00000000;
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}
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u32
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nvbios_connTp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
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struct nvbios_connT *info)
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{
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u32 data = nvbios_connTe(bios, ver, hdr, cnt, len);
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memset(info, 0x00, sizeof(*info));
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switch (!!data * *ver) {
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case 0x30:
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case 0x40:
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return data;
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default:
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break;
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}
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return 0x00000000;
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}
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u32
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nvbios_connEe(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len)
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{
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u8 hdr, cnt;
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u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len);
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if (data && idx < cnt)
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return data + hdr + (idx * *len);
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return 0x00000000;
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}
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u32
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nvbios_connEp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
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struct nvbios_connE *info)
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{
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u32 data = nvbios_connEe(bios, idx, ver, len);
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memset(info, 0x00, sizeof(*info));
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switch (!!data * *ver) {
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case 0x30:
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case 0x40:
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info->type = nvbios_rd08(bios, data + 0x00);
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info->location = nvbios_rd08(bios, data + 0x01) & 0x0f;
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info->hpd = (nvbios_rd08(bios, data + 0x01) & 0x30) >> 4;
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info->dp = (nvbios_rd08(bios, data + 0x01) & 0xc0) >> 6;
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if (*len < 4)
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return data;
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info->hpd |= (nvbios_rd08(bios, data + 0x02) & 0x03) << 2;
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info->dp |= nvbios_rd08(bios, data + 0x02) & 0x0c;
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info->di = (nvbios_rd08(bios, data + 0x02) & 0xf0) >> 4;
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info->hpd |= (nvbios_rd08(bios, data + 0x03) & 0x07) << 4;
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info->sr = (nvbios_rd08(bios, data + 0x03) & 0x08) >> 3;
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info->lcdid = (nvbios_rd08(bios, data + 0x03) & 0x70) >> 4;
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return data;
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default:
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break;
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}
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return 0x00000000;
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}
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