From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c | 338 ++++++++++++++++++++++++ 1 file changed, 338 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c new file mode 100644 index 000000000..6094805fb --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c @@ -0,0 +1,338 @@ +/* + * Copyright 2014 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 "outp.h" +#include "dp.h" +#include "ior.h" + +#include +#include +#include + +void +nvkm_outp_route(struct nvkm_disp *disp) +{ + struct nvkm_outp *outp; + struct nvkm_ior *ior; + + list_for_each_entry(ior, &disp->iors, head) { + if ((outp = ior->arm.outp) && ior->arm.outp != ior->asy.outp) { + OUTP_DBG(outp, "release %s", ior->name); + if (ior->func->route.set) + ior->func->route.set(outp, NULL); + ior->arm.outp = NULL; + } + } + + list_for_each_entry(ior, &disp->iors, head) { + if ((outp = ior->asy.outp)) { + OUTP_DBG(outp, "acquire %s", ior->name); + if (ior->asy.outp != ior->arm.outp) { + if (ior->func->route.set) + ior->func->route.set(outp, ior); + ior->arm.outp = ior->asy.outp; + } + } + } +} + +static enum nvkm_ior_proto +nvkm_outp_xlat(struct nvkm_outp *outp, enum nvkm_ior_type *type) +{ + switch (outp->info.location) { + case 0: + switch (outp->info.type) { + case DCB_OUTPUT_ANALOG: *type = DAC; return CRT; + case DCB_OUTPUT_TV : *type = DAC; return TV; + case DCB_OUTPUT_TMDS : *type = SOR; return TMDS; + case DCB_OUTPUT_LVDS : *type = SOR; return LVDS; + case DCB_OUTPUT_DP : *type = SOR; return DP; + default: + break; + } + break; + case 1: + switch (outp->info.type) { + case DCB_OUTPUT_TMDS: *type = PIOR; return TMDS; + case DCB_OUTPUT_DP : *type = PIOR; return TMDS; /* not a bug */ + default: + break; + } + break; + default: + break; + } + WARN_ON(1); + return UNKNOWN; +} + +void +nvkm_outp_release(struct nvkm_outp *outp, u8 user) +{ + struct nvkm_ior *ior = outp->ior; + OUTP_TRACE(outp, "release %02x &= %02x %p", outp->acquired, ~user, ior); + if (ior) { + outp->acquired &= ~user; + if (!outp->acquired) { + if (outp->func->release && outp->ior) + outp->func->release(outp); + outp->ior->asy.outp = NULL; + outp->ior = NULL; + } + } +} + +static inline int +nvkm_outp_acquire_ior(struct nvkm_outp *outp, u8 user, struct nvkm_ior *ior) +{ + outp->ior = ior; + outp->ior->asy.outp = outp; + outp->ior->asy.link = outp->info.sorconf.link; + outp->acquired |= user; + return 0; +} + +static inline int +nvkm_outp_acquire_hda(struct nvkm_outp *outp, enum nvkm_ior_type type, + u8 user, bool hda) +{ + struct nvkm_ior *ior; + + /* Failing that, a completely unused OR is the next best thing. */ + list_for_each_entry(ior, &outp->disp->iors, head) { + if (!ior->identity && ior->hda == hda && + !ior->asy.outp && ior->type == type && !ior->arm.outp && + (ior->func->route.set || ior->id == __ffs(outp->info.or))) + return nvkm_outp_acquire_ior(outp, user, ior); + } + + /* Last resort is to assign an OR that's already active on HW, + * but will be released during the next modeset. + */ + list_for_each_entry(ior, &outp->disp->iors, head) { + if (!ior->identity && ior->hda == hda && + !ior->asy.outp && ior->type == type && + (ior->func->route.set || ior->id == __ffs(outp->info.or))) + return nvkm_outp_acquire_ior(outp, user, ior); + } + + return -ENOSPC; +} + +int +nvkm_outp_acquire(struct nvkm_outp *outp, u8 user, bool hda) +{ + struct nvkm_ior *ior = outp->ior; + enum nvkm_ior_proto proto; + enum nvkm_ior_type type; + + OUTP_TRACE(outp, "acquire %02x |= %02x %p", outp->acquired, user, ior); + if (ior) { + outp->acquired |= user; + return 0; + } + + /* Lookup a compatible, and unused, OR to assign to the device. */ + proto = nvkm_outp_xlat(outp, &type); + if (proto == UNKNOWN) + return -ENOSYS; + + /* Deal with panels requiring identity-mapped SOR assignment. */ + if (outp->identity) { + ior = nvkm_ior_find(outp->disp, SOR, ffs(outp->info.or) - 1); + if (WARN_ON(!ior)) + return -ENOSPC; + return nvkm_outp_acquire_ior(outp, user, ior); + } + + /* First preference is to reuse the OR that is currently armed + * on HW, if any, in order to prevent unnecessary switching. + */ + list_for_each_entry(ior, &outp->disp->iors, head) { + if (!ior->identity && !ior->asy.outp && ior->arm.outp == outp) { + /*XXX: For various complicated reasons, we can't outright switch + * the boot-time OR on the first modeset without some fairly + * invasive changes. + * + * The systems that were fixed by modifying the OR selection + * code to account for HDA support shouldn't regress here as + * the HDA-enabled ORs match the relevant output's pad macro + * index, and the firmware seems to select an OR this way. + * + * This warning is to make it obvious if that proves wrong. + */ + WARN_ON(hda && !ior->hda); + return nvkm_outp_acquire_ior(outp, user, ior); + } + } + + /* If we don't need HDA, first try to acquire an OR that doesn't + * support it to leave free the ones that do. + */ + if (!hda) { + if (!nvkm_outp_acquire_hda(outp, type, user, false)) + return 0; + + /* Use a HDA-supporting SOR anyway. */ + return nvkm_outp_acquire_hda(outp, type, user, true); + } + + /* We want HDA, try to acquire an OR that supports it. */ + if (!nvkm_outp_acquire_hda(outp, type, user, true)) + return 0; + + /* There weren't any free ORs that support HDA, grab one that + * doesn't and at least allow display to work still. + */ + return nvkm_outp_acquire_hda(outp, type, user, false); +} + +void +nvkm_outp_fini(struct nvkm_outp *outp) +{ + if (outp->func->fini) + outp->func->fini(outp); +} + +static void +nvkm_outp_init_route(struct nvkm_outp *outp) +{ + struct nvkm_disp *disp = outp->disp; + enum nvkm_ior_proto proto; + enum nvkm_ior_type type; + struct nvkm_ior *ior; + int id, link; + + /* Find any OR from the class that is able to support this device. */ + proto = nvkm_outp_xlat(outp, &type); + if (proto == UNKNOWN) + return; + + ior = nvkm_ior_find(disp, type, -1); + if (!ior) { + WARN_ON(1); + return; + } + + /* Determine the specific OR, if any, this device is attached to. */ + if (ior->func->route.get) { + id = ior->func->route.get(outp, &link); + if (id < 0) { + OUTP_DBG(outp, "no route"); + return; + } + } else { + /* Prior to DCB 4.1, this is hardwired like so. */ + id = ffs(outp->info.or) - 1; + link = (ior->type == SOR) ? outp->info.sorconf.link : 0; + } + + ior = nvkm_ior_find(disp, type, id); + if (!ior) { + WARN_ON(1); + return; + } + + /* Determine if the OR is already configured for this device. */ + ior->func->state(ior, &ior->arm); + if (!ior->arm.head || ior->arm.proto != proto) { + OUTP_DBG(outp, "no heads (%x %d %d)", ior->arm.head, + ior->arm.proto, proto); + + /* The EFI GOP driver on Ampere can leave unused DP links routed, + * which we don't expect. The DisableLT IED script *should* get + * us back to where we need to be. + */ + if (ior->func->route.get && !ior->arm.head && outp->info.type == DCB_OUTPUT_DP) + nvkm_dp_disable(outp, ior); + + return; + } + + OUTP_DBG(outp, "on %s link %x", ior->name, ior->arm.link); + ior->arm.outp = outp; +} + +void +nvkm_outp_init(struct nvkm_outp *outp) +{ + nvkm_outp_init_route(outp); + if (outp->func->init) + outp->func->init(outp); +} + +void +nvkm_outp_del(struct nvkm_outp **poutp) +{ + struct nvkm_outp *outp = *poutp; + if (outp && !WARN_ON(!outp->func)) { + if (outp->func->dtor) + *poutp = outp->func->dtor(outp); + kfree(*poutp); + *poutp = NULL; + } +} + +int +nvkm_outp_new_(const struct nvkm_outp_func *func, struct nvkm_disp *disp, + int index, struct dcb_output *dcbE, struct nvkm_outp **poutp) +{ + struct nvkm_i2c *i2c = disp->engine.subdev.device->i2c; + struct nvkm_outp *outp; + enum nvkm_ior_proto proto; + enum nvkm_ior_type type; + + if (!(outp = *poutp = kzalloc(sizeof(*outp), GFP_KERNEL))) + return -ENOMEM; + + outp->func = func; + outp->disp = disp; + outp->index = index; + outp->info = *dcbE; + outp->i2c = nvkm_i2c_bus_find(i2c, dcbE->i2c_index); + + OUTP_DBG(outp, "type %02x loc %d or %d link %d con %x " + "edid %x bus %d head %x", + outp->info.type, outp->info.location, outp->info.or, + outp->info.type >= 2 ? outp->info.sorconf.link : 0, + outp->info.connector, outp->info.i2c_index, + outp->info.bus, outp->info.heads); + + /* Cull output paths we can't map to an output resource. */ + proto = nvkm_outp_xlat(outp, &type); + if (proto == UNKNOWN) + return -ENODEV; + + return 0; +} + +static const struct nvkm_outp_func +nvkm_outp = { +}; + +int +nvkm_outp_new(struct nvkm_disp *disp, int index, struct dcb_output *dcbE, + struct nvkm_outp **poutp) +{ + return nvkm_outp_new_(&nvkm_outp, disp, index, dcbE, poutp); +} -- cgit v1.2.3