1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include <subdev/bios.h> 25 #include <subdev/bios/dcb.h> 26 #include <subdev/bios/conn.h> 27 28 u32 29 nvbios_connTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 30 { 31 u32 dcb = dcb_table(bios, ver, hdr, cnt, len); 32 if (dcb && *ver >= 0x30 && *hdr >= 0x16) { 33 u32 data = nv_ro16(bios, dcb + 0x14); 34 if (data) { 35 *ver = nv_ro08(bios, data + 0); 36 *hdr = nv_ro08(bios, data + 1); 37 *cnt = nv_ro08(bios, data + 2); 38 *len = nv_ro08(bios, data + 3); 39 return data; 40 } 41 } 42 return 0x00000000; 43 } 44 45 u32 46 nvbios_connTp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len, 47 struct nvbios_connT *info) 48 { 49 u32 data = nvbios_connTe(bios, ver, hdr, cnt, len); 50 memset(info, 0x00, sizeof(*info)); 51 switch (!!data * *ver) { 52 case 0x30: 53 case 0x40: 54 return data; 55 default: 56 break; 57 } 58 return 0x00000000; 59 } 60 61 u32 62 nvbios_connEe(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len) 63 { 64 u8 hdr, cnt; 65 u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len); 66 if (data && idx < cnt) 67 return data + hdr + (idx * *len); 68 return 0x00000000; 69 } 70 71 u32 72 nvbios_connEp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len, 73 struct nvbios_connE *info) 74 { 75 u32 data = nvbios_connEe(bios, idx, ver, len); 76 memset(info, 0x00, sizeof(*info)); 77 switch (!!data * *ver) { 78 case 0x30: 79 case 0x40: 80 info->type = nv_ro08(bios, data + 0x00); 81 info->location = nv_ro08(bios, data + 0x01) & 0x0f; 82 info->hpd = (nv_ro08(bios, data + 0x01) & 0x30) >> 4; 83 info->dp = (nv_ro08(bios, data + 0x01) & 0xc0) >> 6; 84 if (*len < 4) 85 return data; 86 info->hpd |= (nv_ro08(bios, data + 0x02) & 0x03) << 2; 87 info->dp |= nv_ro08(bios, data + 0x02) & 0x0c; 88 info->di = (nv_ro08(bios, data + 0x02) & 0xf0) >> 4; 89 info->hpd |= (nv_ro08(bios, data + 0x03) & 0x07) << 4; 90 info->sr = (nv_ro08(bios, data + 0x03) & 0x08) >> 3; 91 info->lcdid = (nv_ro08(bios, data + 0x03) & 0x70) >> 4; 92 return data; 93 default: 94 break; 95 } 96 return 0x00000000; 97 } 98