| /* |
| * Copyright 2011 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 "mxms.h" |
| |
| #include <subdev/bios.h> |
| #include <subdev/bios/conn.h> |
| #include <subdev/bios/dcb.h> |
| #include <subdev/bios/mxm.h> |
| |
| struct context { |
| u32 *outp; |
| struct mxms_odev desc; |
| }; |
| |
| static bool |
| mxm_match_tmds_partner(struct nvkm_mxm *mxm, u8 *data, void *info) |
| { |
| struct context *ctx = info; |
| struct mxms_odev desc; |
| |
| mxms_output_device(mxm, data, &desc); |
| if (desc.outp_type == 2 && |
| desc.dig_conn == ctx->desc.dig_conn) |
| return false; |
| return true; |
| } |
| |
| static bool |
| mxm_match_dcb(struct nvkm_mxm *mxm, u8 *data, void *info) |
| { |
| struct nvkm_bios *bios = mxm->subdev.device->bios; |
| struct context *ctx = info; |
| u64 desc = *(u64 *)data; |
| |
| mxms_output_device(mxm, data, &ctx->desc); |
| |
| /* match dcb encoder type to mxm-ods device type */ |
| if ((ctx->outp[0] & 0x0000000f) != ctx->desc.outp_type) |
| return true; |
| |
| /* digital output, have some extra stuff to match here, there's a |
| * table in the vbios that provides a mapping from the mxm digital |
| * connection enum values to SOR/link |
| */ |
| if ((desc & 0x00000000000000f0) >= 0x20) { |
| /* check against sor index */ |
| u8 link = mxm_sor_map(bios, ctx->desc.dig_conn); |
| if ((ctx->outp[0] & 0x0f000000) != (link & 0x0f) << 24) |
| return true; |
| |
| /* check dcb entry has a compatible link field */ |
| link = (link & 0x30) >> 4; |
| if ((link & ((ctx->outp[1] & 0x00000030) >> 4)) != link) |
| return true; |
| } |
| |
| /* mark this descriptor accounted for by setting invalid device type, |
| * except of course some manufactures don't follow specs properly and |
| * we need to avoid killing off the TMDS function on DP connectors |
| * if MXM-SIS is missing an entry for it. |
| */ |
| data[0] &= ~0xf0; |
| if (ctx->desc.outp_type == 6 && ctx->desc.conn_type == 6 && |
| mxms_foreach(mxm, 0x01, mxm_match_tmds_partner, ctx)) { |
| data[0] |= 0x20; /* modify descriptor to match TMDS now */ |
| } else { |
| data[0] |= 0xf0; |
| } |
| |
| return false; |
| } |
| |
| static int |
| mxm_dcb_sanitise_entry(struct nvkm_bios *bios, void *data, int idx, u16 pdcb) |
| { |
| struct nvkm_mxm *mxm = data; |
| struct context ctx = { .outp = (u32 *)(bios->data + pdcb) }; |
| u8 type, i2cidx, link, ver, len; |
| u8 *conn; |
| |
| /* look for an output device structure that matches this dcb entry. |
| * if one isn't found, disable it. |
| */ |
| if (mxms_foreach(mxm, 0x01, mxm_match_dcb, &ctx)) { |
| nvkm_debug(&mxm->subdev, "disable %d: %08x %08x\n", |
| idx, ctx.outp[0], ctx.outp[1]); |
| ctx.outp[0] |= 0x0000000f; |
| return 0; |
| } |
| |
| /* modify the output's ddc/aux port, there's a pointer to a table |
| * with the mapping from mxm ddc/aux port to dcb i2c_index in the |
| * vbios mxm table |
| */ |
| i2cidx = mxm_ddc_map(bios, ctx.desc.ddc_port); |
| if ((ctx.outp[0] & 0x0000000f) != DCB_OUTPUT_DP) |
| i2cidx = (i2cidx & 0x0f) << 4; |
| else |
| i2cidx = (i2cidx & 0xf0); |
| |
| if (i2cidx != 0xf0) { |
| ctx.outp[0] &= ~0x000000f0; |
| ctx.outp[0] |= i2cidx; |
| } |
| |
| /* override dcb sorconf.link, based on what mxm data says */ |
| switch (ctx.desc.outp_type) { |
| case 0x00: /* Analog CRT */ |
| case 0x01: /* Analog TV/HDTV */ |
| break; |
| default: |
| link = mxm_sor_map(bios, ctx.desc.dig_conn) & 0x30; |
| ctx.outp[1] &= ~0x00000030; |
| ctx.outp[1] |= link; |
| break; |
| } |
| |
| /* we may need to fixup various other vbios tables based on what |
| * the descriptor says the connector type should be. |
| * |
| * in a lot of cases, the vbios tables will claim DVI-I is possible, |
| * and the mxm data says the connector is really HDMI. another |
| * common example is DP->eDP. |
| */ |
| conn = bios->data; |
| conn += nvbios_connEe(bios, (ctx.outp[0] & 0x0000f000) >> 12, &ver, &len); |
| type = conn[0]; |
| switch (ctx.desc.conn_type) { |
| case 0x01: /* LVDS */ |
| ctx.outp[1] |= 0x00000004; /* use_power_scripts */ |
| /* XXX: modify default link width in LVDS table */ |
| break; |
| case 0x02: /* HDMI */ |
| type = DCB_CONNECTOR_HDMI_1; |
| break; |
| case 0x03: /* DVI-D */ |
| type = DCB_CONNECTOR_DVI_D; |
| break; |
| case 0x0e: /* eDP, falls through to DPint */ |
| ctx.outp[1] |= 0x00010000; |
| case 0x07: /* DP internal, wtf is this?? HP8670w */ |
| ctx.outp[1] |= 0x00000004; /* use_power_scripts? */ |
| type = DCB_CONNECTOR_eDP; |
| break; |
| default: |
| break; |
| } |
| |
| if (mxms_version(mxm) >= 0x0300) |
| conn[0] = type; |
| |
| return 0; |
| } |
| |
| static bool |
| mxm_show_unmatched(struct nvkm_mxm *mxm, u8 *data, void *info) |
| { |
| struct nvkm_subdev *subdev = &mxm->subdev; |
| u64 desc = *(u64 *)data; |
| if ((desc & 0xf0) != 0xf0) |
| nvkm_info(subdev, "unmatched output device %016llx\n", desc); |
| return true; |
| } |
| |
| static void |
| mxm_dcb_sanitise(struct nvkm_mxm *mxm) |
| { |
| struct nvkm_subdev *subdev = &mxm->subdev; |
| struct nvkm_bios *bios = subdev->device->bios; |
| u8 ver, hdr, cnt, len; |
| u16 dcb = dcb_table(bios, &ver, &hdr, &cnt, &len); |
| if (dcb == 0x0000 || (ver != 0x40 && ver != 0x41)) { |
| nvkm_warn(subdev, "unsupported DCB version\n"); |
| return; |
| } |
| |
| dcb_outp_foreach(bios, mxm, mxm_dcb_sanitise_entry); |
| mxms_foreach(mxm, 0x01, mxm_show_unmatched, NULL); |
| } |
| |
| int |
| nv50_mxm_new(struct nvkm_device *device, int index, struct nvkm_subdev **pmxm) |
| { |
| struct nvkm_mxm *mxm; |
| int ret; |
| |
| ret = nvkm_mxm_new_(device, index, &mxm); |
| if (mxm) |
| *pmxm = &mxm->subdev; |
| if (ret) |
| return ret; |
| |
| if (mxm->action & MXM_SANITISE_DCB) |
| mxm_dcb_sanitise(mxm); |
| |
| return 0; |
| } |