diff options
Diffstat (limited to 'nvkm/subdev/bios/i2c.c')
| -rw-r--r-- | nvkm/subdev/bios/i2c.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/nvkm/subdev/bios/i2c.c b/nvkm/subdev/bios/i2c.c deleted file mode 100644 index 282320ba9..000000000 --- a/nvkm/subdev/bios/i2c.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * 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/i2c.h" - -u16 -dcb_i2c_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) -{ - u16 i2c = 0x0000; - u16 dcb = dcb_table(bios, ver, hdr, cnt, len); - if (dcb) { - if (*ver >= 0x15) - i2c = nv_ro16(bios, dcb + 2); - if (*ver >= 0x30) - i2c = nv_ro16(bios, dcb + 4); - } - - if (i2c && *ver >= 0x42) { - nv_warn(bios, "ccb %02x not supported\n", *ver); - return 0x0000; - } - - if (i2c && *ver >= 0x30) { - *ver = nv_ro08(bios, i2c + 0); - *hdr = nv_ro08(bios, i2c + 1); - *cnt = nv_ro08(bios, i2c + 2); - *len = nv_ro08(bios, i2c + 3); - } else { - *ver = *ver; /* use DCB version */ - *hdr = 0; - *cnt = 16; - *len = 4; - } - - return i2c; -} - -u16 -dcb_i2c_entry(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len) -{ - u8 hdr, cnt; - u16 i2c = dcb_i2c_table(bios, ver, &hdr, &cnt, len); - if (i2c && idx < cnt) - return i2c + hdr + (idx * *len); - return 0x0000; -} - -int -dcb_i2c_parse(struct nouveau_bios *bios, u8 idx, struct dcb_i2c_entry *info) -{ - u8 ver, len; - u16 ent = dcb_i2c_entry(bios, idx, &ver, &len); - if (ent) { - if (ver >= 0x41) { - if (!(nv_ro32(bios, ent) & 0x80000000)) - info->type = DCB_I2C_UNUSED; - else - info->type = DCB_I2C_PMGR; - } else - if (ver >= 0x30) { - info->type = nv_ro08(bios, ent + 0x03); - } else { - info->type = nv_ro08(bios, ent + 0x03) & 0x07; - if (info->type == 0x07) - info->type = DCB_I2C_UNUSED; - } - - info->drive = DCB_I2C_UNUSED; - info->sense = DCB_I2C_UNUSED; - info->share = DCB_I2C_UNUSED; - info->auxch = DCB_I2C_UNUSED; - - switch (info->type) { - case DCB_I2C_NV04_BIT: - info->drive = nv_ro08(bios, ent + 0); - info->sense = nv_ro08(bios, ent + 1); - return 0; - case DCB_I2C_NV4E_BIT: - info->drive = nv_ro08(bios, ent + 1); - return 0; - case DCB_I2C_NVIO_BIT: - info->drive = nv_ro08(bios, ent + 0) & 0x0f; - if (nv_ro08(bios, ent + 1) & 0x01) - info->share = nv_ro08(bios, ent + 1) >> 1; - return 0; - case DCB_I2C_NVIO_AUX: - info->auxch = nv_ro08(bios, ent + 0) & 0x0f; - if (nv_ro08(bios, ent + 1) & 0x01) - info->share = info->auxch; - return 0; - case DCB_I2C_PMGR: - info->drive = (nv_ro16(bios, ent + 0) & 0x01f) >> 0; - if (info->drive == 0x1f) - info->drive = DCB_I2C_UNUSED; - info->auxch = (nv_ro16(bios, ent + 0) & 0x3e0) >> 5; - if (info->auxch == 0x1f) - info->auxch = DCB_I2C_UNUSED; - info->share = info->auxch; - return 0; - case DCB_I2C_UNUSED: - return 0; - default: - nv_warn(bios, "unknown i2c type %d\n", info->type); - info->type = DCB_I2C_UNUSED; - return 0; - } - } - - if (bios->bmp_offset && idx < 2) { - /* BMP (from v4.0 has i2c info in the structure, it's in a - * fixed location on earlier VBIOS - */ - if (nv_ro08(bios, bios->bmp_offset + 5) < 4) - ent = 0x0048; - else - ent = 0x0036 + bios->bmp_offset; - - if (idx == 0) { - info->drive = nv_ro08(bios, ent + 4); - if (!info->drive) info->drive = 0x3f; - info->sense = nv_ro08(bios, ent + 5); - if (!info->sense) info->sense = 0x3e; - } else - if (idx == 1) { - info->drive = nv_ro08(bios, ent + 6); - if (!info->drive) info->drive = 0x37; - info->sense = nv_ro08(bios, ent + 7); - if (!info->sense) info->sense = 0x36; - } - - info->type = DCB_I2C_NV04_BIT; - info->share = DCB_I2C_UNUSED; - return 0; - } - - return -ENOENT; -} |