diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c new file mode 100644 index 000000000000..706a1650a4f2 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/conn.c @@ -0,0 +1,97 @@ +/* + * 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 = nv_ro16(bios, dcb + 0x14); + if (data) { + *ver = nv_ro08(bios, data + 0); + *hdr = nv_ro08(bios, data + 1); + *cnt = nv_ro08(bios, data + 2); + *len = nv_ro08(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 = nv_ro08(bios, data + 0x00); + info->location = nv_ro08(bios, data + 0x01) & 0x0f; + info->hpd = (nv_ro08(bios, data + 0x01) & 0x30) >> 4; + info->dp = (nv_ro08(bios, data + 0x01) & 0xc0) >> 6; + if (*len < 4) + return data; + info->hpd |= (nv_ro08(bios, data + 0x02) & 0x03) << 2; + info->dp |= nv_ro08(bios, data + 0x02) & 0x0c; + info->di = (nv_ro08(bios, data + 0x02) & 0xf0) >> 4; + info->hpd |= (nv_ro08(bios, data + 0x03) & 0x07) << 4; + info->sr = (nv_ro08(bios, data + 0x03) & 0x08) >> 3; + info->lcdid = (nv_ro08(bios, data + 0x03) & 0x70) >> 4; + return data; + default: + break; + } + return 0x00000000; +} |