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/subdev/i2c/base.c | 431 +++++++++++++++++++++++++ 1 file changed, 431 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/i2c/base.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/i2c/base.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/base.c new file mode 100644 index 000000000..cb5cb533d --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/base.c @@ -0,0 +1,431 @@ +/* + * Copyright 2013 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 "priv.h" +#include "aux.h" +#include "bus.h" +#include "pad.h" + +#include +#include +#include +#include +#include + +static struct nvkm_i2c_pad * +nvkm_i2c_pad_find(struct nvkm_i2c *i2c, int id) +{ + struct nvkm_i2c_pad *pad; + + list_for_each_entry(pad, &i2c->pad, head) { + if (pad->id == id) + return pad; + } + + return NULL; +} + +struct nvkm_i2c_bus * +nvkm_i2c_bus_find(struct nvkm_i2c *i2c, int id) +{ + struct nvkm_bios *bios = i2c->subdev.device->bios; + struct nvkm_i2c_bus *bus; + + if (id == NVKM_I2C_BUS_PRI || id == NVKM_I2C_BUS_SEC) { + u8 ver, hdr, cnt, len; + u16 i2c = dcb_i2c_table(bios, &ver, &hdr, &cnt, &len); + if (i2c && ver >= 0x30) { + u8 auxidx = nvbios_rd08(bios, i2c + 4); + if (id == NVKM_I2C_BUS_PRI) + id = NVKM_I2C_BUS_CCB((auxidx & 0x0f) >> 0); + else + id = NVKM_I2C_BUS_CCB((auxidx & 0xf0) >> 4); + } else { + id = NVKM_I2C_BUS_CCB(2); + } + } + + list_for_each_entry(bus, &i2c->bus, head) { + if (bus->id == id) + return bus; + } + + return NULL; +} + +struct nvkm_i2c_aux * +nvkm_i2c_aux_find(struct nvkm_i2c *i2c, int id) +{ + struct nvkm_i2c_aux *aux; + + list_for_each_entry(aux, &i2c->aux, head) { + if (aux->id == id) + return aux; + } + + return NULL; +} + +static void +nvkm_i2c_intr_fini(struct nvkm_event *event, int type, int id) +{ + struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event); + struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id); + if (aux) + i2c->func->aux_mask(i2c, type, aux->intr, 0); +} + +static void +nvkm_i2c_intr_init(struct nvkm_event *event, int type, int id) +{ + struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event); + struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id); + if (aux) + i2c->func->aux_mask(i2c, type, aux->intr, aux->intr); +} + +static int +nvkm_i2c_intr_ctor(struct nvkm_object *object, void *data, u32 size, + struct nvkm_notify *notify) +{ + struct nvkm_i2c_ntfy_req *req = data; + if (!WARN_ON(size != sizeof(*req))) { + notify->size = sizeof(struct nvkm_i2c_ntfy_rep); + notify->types = req->mask; + notify->index = req->port; + return 0; + } + return -EINVAL; +} + +static const struct nvkm_event_func +nvkm_i2c_intr_func = { + .ctor = nvkm_i2c_intr_ctor, + .init = nvkm_i2c_intr_init, + .fini = nvkm_i2c_intr_fini, +}; + +static void +nvkm_i2c_intr(struct nvkm_subdev *subdev) +{ + struct nvkm_i2c *i2c = nvkm_i2c(subdev); + struct nvkm_i2c_aux *aux; + u32 hi, lo, rq, tx; + + if (!i2c->func->aux_stat) + return; + + i2c->func->aux_stat(i2c, &hi, &lo, &rq, &tx); + if (!hi && !lo && !rq && !tx) + return; + + list_for_each_entry(aux, &i2c->aux, head) { + u32 mask = 0; + if (hi & aux->intr) mask |= NVKM_I2C_PLUG; + if (lo & aux->intr) mask |= NVKM_I2C_UNPLUG; + if (rq & aux->intr) mask |= NVKM_I2C_IRQ; + if (tx & aux->intr) mask |= NVKM_I2C_DONE; + if (mask) { + struct nvkm_i2c_ntfy_rep rep = { + .mask = mask, + }; + nvkm_event_send(&i2c->event, rep.mask, aux->id, + &rep, sizeof(rep)); + } + } +} + +static int +nvkm_i2c_fini(struct nvkm_subdev *subdev, bool suspend) +{ + struct nvkm_i2c *i2c = nvkm_i2c(subdev); + struct nvkm_i2c_pad *pad; + struct nvkm_i2c_bus *bus; + struct nvkm_i2c_aux *aux; + u32 mask; + + list_for_each_entry(aux, &i2c->aux, head) { + nvkm_i2c_aux_fini(aux); + } + + list_for_each_entry(bus, &i2c->bus, head) { + nvkm_i2c_bus_fini(bus); + } + + if ((mask = (1 << i2c->func->aux) - 1), i2c->func->aux_stat) { + i2c->func->aux_mask(i2c, NVKM_I2C_ANY, mask, 0); + i2c->func->aux_stat(i2c, &mask, &mask, &mask, &mask); + } + + list_for_each_entry(pad, &i2c->pad, head) { + nvkm_i2c_pad_fini(pad); + } + + return 0; +} + +static int +nvkm_i2c_preinit(struct nvkm_subdev *subdev) +{ + struct nvkm_i2c *i2c = nvkm_i2c(subdev); + struct nvkm_i2c_bus *bus; + struct nvkm_i2c_pad *pad; + + /* + * We init our i2c busses as early as possible, since they may be + * needed by the vbios init scripts on some cards + */ + list_for_each_entry(pad, &i2c->pad, head) + nvkm_i2c_pad_init(pad); + list_for_each_entry(bus, &i2c->bus, head) + nvkm_i2c_bus_init(bus); + + return 0; +} + +static int +nvkm_i2c_init(struct nvkm_subdev *subdev) +{ + struct nvkm_i2c *i2c = nvkm_i2c(subdev); + struct nvkm_i2c_bus *bus; + struct nvkm_i2c_pad *pad; + struct nvkm_i2c_aux *aux; + + list_for_each_entry(pad, &i2c->pad, head) { + nvkm_i2c_pad_init(pad); + } + + list_for_each_entry(bus, &i2c->bus, head) { + nvkm_i2c_bus_init(bus); + } + + list_for_each_entry(aux, &i2c->aux, head) { + nvkm_i2c_aux_init(aux); + } + + return 0; +} + +static void * +nvkm_i2c_dtor(struct nvkm_subdev *subdev) +{ + struct nvkm_i2c *i2c = nvkm_i2c(subdev); + + nvkm_event_fini(&i2c->event); + + while (!list_empty(&i2c->aux)) { + struct nvkm_i2c_aux *aux = + list_first_entry(&i2c->aux, typeof(*aux), head); + nvkm_i2c_aux_del(&aux); + } + + while (!list_empty(&i2c->bus)) { + struct nvkm_i2c_bus *bus = + list_first_entry(&i2c->bus, typeof(*bus), head); + nvkm_i2c_bus_del(&bus); + } + + while (!list_empty(&i2c->pad)) { + struct nvkm_i2c_pad *pad = + list_first_entry(&i2c->pad, typeof(*pad), head); + nvkm_i2c_pad_del(&pad); + } + + return i2c; +} + +static const struct nvkm_subdev_func +nvkm_i2c = { + .dtor = nvkm_i2c_dtor, + .preinit = nvkm_i2c_preinit, + .init = nvkm_i2c_init, + .fini = nvkm_i2c_fini, + .intr = nvkm_i2c_intr, +}; + +static const struct nvkm_i2c_drv { + u8 bios; + u8 addr; + int (*pad_new)(struct nvkm_i2c_bus *, int id, u8 addr, + struct nvkm_i2c_pad **); +} +nvkm_i2c_drv[] = { + { 0x0d, 0x39, anx9805_pad_new }, + { 0x0e, 0x3b, anx9805_pad_new }, + {} +}; + +int +nvkm_i2c_new_(const struct nvkm_i2c_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_i2c **pi2c) +{ + struct nvkm_bios *bios = device->bios; + struct nvkm_i2c *i2c; + struct dcb_i2c_entry ccbE; + struct dcb_output dcbE; + u8 ver, hdr; + int ret, i; + + if (!(i2c = *pi2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) + return -ENOMEM; + + nvkm_subdev_ctor(&nvkm_i2c, device, type, inst, &i2c->subdev); + i2c->func = func; + INIT_LIST_HEAD(&i2c->pad); + INIT_LIST_HEAD(&i2c->bus); + INIT_LIST_HEAD(&i2c->aux); + + i = -1; + while (!dcb_i2c_parse(bios, ++i, &ccbE)) { + struct nvkm_i2c_pad *pad = NULL; + struct nvkm_i2c_bus *bus = NULL; + struct nvkm_i2c_aux *aux = NULL; + + nvkm_debug(&i2c->subdev, "ccb %02x: type %02x drive %02x " + "sense %02x share %02x auxch %02x\n", i, ccbE.type, + ccbE.drive, ccbE.sense, ccbE.share, ccbE.auxch); + + if (ccbE.share != DCB_I2C_UNUSED) { + const int id = NVKM_I2C_PAD_HYBRID(ccbE.share); + if (!(pad = nvkm_i2c_pad_find(i2c, id))) + ret = func->pad_s_new(i2c, id, &pad); + else + ret = 0; + } else { + ret = func->pad_x_new(i2c, NVKM_I2C_PAD_CCB(i), &pad); + } + + if (ret) { + nvkm_error(&i2c->subdev, "ccb %02x pad, %d\n", i, ret); + nvkm_i2c_pad_del(&pad); + continue; + } + + if (pad->func->bus_new_0 && ccbE.type == DCB_I2C_NV04_BIT) { + ret = pad->func->bus_new_0(pad, NVKM_I2C_BUS_CCB(i), + ccbE.drive, + ccbE.sense, &bus); + } else + if (pad->func->bus_new_4 && + ( ccbE.type == DCB_I2C_NV4E_BIT || + ccbE.type == DCB_I2C_NVIO_BIT || + (ccbE.type == DCB_I2C_PMGR && + ccbE.drive != DCB_I2C_UNUSED))) { + ret = pad->func->bus_new_4(pad, NVKM_I2C_BUS_CCB(i), + ccbE.drive, &bus); + } + + if (ret) { + nvkm_error(&i2c->subdev, "ccb %02x bus, %d\n", i, ret); + nvkm_i2c_bus_del(&bus); + } + + if (pad->func->aux_new_6 && + ( ccbE.type == DCB_I2C_NVIO_AUX || + (ccbE.type == DCB_I2C_PMGR && + ccbE.auxch != DCB_I2C_UNUSED))) { + ret = pad->func->aux_new_6(pad, NVKM_I2C_BUS_CCB(i), + ccbE.auxch, &aux); + } else { + ret = 0; + } + + if (ret) { + nvkm_error(&i2c->subdev, "ccb %02x aux, %d\n", i, ret); + nvkm_i2c_aux_del(&aux); + } + + if (ccbE.type != DCB_I2C_UNUSED && !bus && !aux) { + nvkm_warn(&i2c->subdev, "ccb %02x was ignored\n", i); + continue; + } + } + + i = -1; + while (dcb_outp_parse(bios, ++i, &ver, &hdr, &dcbE)) { + const struct nvkm_i2c_drv *drv = nvkm_i2c_drv; + struct nvkm_i2c_bus *bus; + struct nvkm_i2c_pad *pad; + + /* internal outputs handled by native i2c busses (above) */ + if (!dcbE.location) + continue; + + /* we need an i2c bus to talk to the external encoder */ + bus = nvkm_i2c_bus_find(i2c, dcbE.i2c_index); + if (!bus) { + nvkm_debug(&i2c->subdev, "dcb %02x no bus\n", i); + continue; + } + + /* ... and a driver for it */ + while (drv->pad_new) { + if (drv->bios == dcbE.extdev) + break; + drv++; + } + + if (!drv->pad_new) { + nvkm_debug(&i2c->subdev, "dcb %02x drv %02x unknown\n", + i, dcbE.extdev); + continue; + } + + /* find/create an instance of the driver */ + pad = nvkm_i2c_pad_find(i2c, NVKM_I2C_PAD_EXT(dcbE.extdev)); + if (!pad) { + const int id = NVKM_I2C_PAD_EXT(dcbE.extdev); + ret = drv->pad_new(bus, id, drv->addr, &pad); + if (ret) { + nvkm_error(&i2c->subdev, "dcb %02x pad, %d\n", + i, ret); + nvkm_i2c_pad_del(&pad); + continue; + } + } + + /* create any i2c bus / aux channel required by the output */ + if (pad->func->aux_new_6 && dcbE.type == DCB_OUTPUT_DP) { + const int id = NVKM_I2C_AUX_EXT(dcbE.extdev); + struct nvkm_i2c_aux *aux = NULL; + ret = pad->func->aux_new_6(pad, id, 0, &aux); + if (ret) { + nvkm_error(&i2c->subdev, "dcb %02x aux, %d\n", + i, ret); + nvkm_i2c_aux_del(&aux); + } + } else + if (pad->func->bus_new_4) { + const int id = NVKM_I2C_BUS_EXT(dcbE.extdev); + struct nvkm_i2c_bus *bus = NULL; + ret = pad->func->bus_new_4(pad, id, 0, &bus); + if (ret) { + nvkm_error(&i2c->subdev, "dcb %02x bus, %d\n", + i, ret); + nvkm_i2c_bus_del(&bus); + } + } + } + + return nvkm_event_init(&nvkm_i2c_intr_func, 4, i, &i2c->event); +} -- cgit v1.2.3