diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c new file mode 100644 index 000000000..3249e5c1c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c @@ -0,0 +1,213 @@ +/* + * Copyright 2021 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. + */ +#define nvkm_uconn(p) container_of((p), struct nvkm_conn, object) +#include "conn.h" +#include "outp.h" + +#include <core/client.h> +#include <core/event.h> +#include <subdev/gpio.h> +#include <subdev/i2c.h> + +#include <nvif/if0011.h> + +static int +nvkm_uconn_uevent_aux(struct nvkm_object *object, u64 token, u32 bits) +{ + union nvif_conn_event_args args; + + args.v0.version = 0; + args.v0.types = 0; + if (bits & NVKM_I2C_PLUG) + args.v0.types |= NVIF_CONN_EVENT_V0_PLUG; + if (bits & NVKM_I2C_UNPLUG) + args.v0.types |= NVIF_CONN_EVENT_V0_UNPLUG; + if (bits & NVKM_I2C_IRQ) + args.v0.types |= NVIF_CONN_EVENT_V0_IRQ; + + return object->client->event(token, &args, sizeof(args.v0)); +} + +static int +nvkm_uconn_uevent_gpio(struct nvkm_object *object, u64 token, u32 bits) +{ + union nvif_conn_event_args args; + + args.v0.version = 0; + args.v0.types = 0; + if (bits & NVKM_GPIO_HI) + args.v0.types |= NVIF_CONN_EVENT_V0_PLUG; + if (bits & NVKM_GPIO_LO) + args.v0.types |= NVIF_CONN_EVENT_V0_UNPLUG; + + return object->client->event(token, &args, sizeof(args.v0)); +} + +static bool +nvkm_connector_is_dp_dms(u8 type) +{ + switch (type) { + case DCB_CONNECTOR_DMS59_DP0: + case DCB_CONNECTOR_DMS59_DP1: + return true; + default: + return false; + } +} + +static int +nvkm_uconn_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent) +{ + struct nvkm_conn *conn = nvkm_uconn(object); + struct nvkm_device *device = conn->disp->engine.subdev.device; + struct nvkm_outp *outp; + union nvif_conn_event_args *args = argv; + u64 bits = 0; + + if (!uevent) { + if (conn->info.hpd == DCB_GPIO_UNUSED) + return -ENOSYS; + return 0; + } + + if (argc != sizeof(args->v0) || args->v0.version != 0) + return -ENOSYS; + + list_for_each_entry(outp, &conn->disp->outps, head) { + if (outp->info.connector == conn->index) + break; + } + + if (&outp->head == &conn->disp->outps) + return -EINVAL; + + if (outp->dp.aux && !outp->info.location) { + if (args->v0.types & NVIF_CONN_EVENT_V0_PLUG ) bits |= NVKM_I2C_PLUG; + if (args->v0.types & NVIF_CONN_EVENT_V0_UNPLUG) bits |= NVKM_I2C_UNPLUG; + if (args->v0.types & NVIF_CONN_EVENT_V0_IRQ ) bits |= NVKM_I2C_IRQ; + + return nvkm_uevent_add(uevent, &device->i2c->event, outp->dp.aux->id, bits, + nvkm_uconn_uevent_aux); + } + + if (args->v0.types & NVIF_CONN_EVENT_V0_PLUG ) bits |= NVKM_GPIO_HI; + if (args->v0.types & NVIF_CONN_EVENT_V0_UNPLUG) bits |= NVKM_GPIO_LO; + if (args->v0.types & NVIF_CONN_EVENT_V0_IRQ) { + /* TODO: support DP IRQ on ANX9805 and remove this hack. */ + if (!outp->info.location && !nvkm_connector_is_dp_dms(conn->info.type)) + return -EINVAL; + } + + return nvkm_uevent_add(uevent, &device->gpio->event, conn->info.hpd, bits, + nvkm_uconn_uevent_gpio); +} + +static int +nvkm_uconn_mthd_hpd_status(struct nvkm_conn *conn, void *argv, u32 argc) +{ + struct nvkm_gpio *gpio = conn->disp->engine.subdev.device->gpio; + union nvif_conn_hpd_status_args *args = argv; + + if (argc != sizeof(args->v0) || args->v0.version != 0) + return -ENOSYS; + + args->v0.support = gpio && conn->info.hpd != DCB_GPIO_UNUSED; + args->v0.present = 0; + + if (args->v0.support) { + int ret = nvkm_gpio_get(gpio, 0, DCB_GPIO_UNUSED, conn->info.hpd); + + if (WARN_ON(ret < 0)) { + args->v0.support = false; + return 0; + } + + args->v0.present = ret; + } + + return 0; +} + +static int +nvkm_uconn_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc) +{ + struct nvkm_conn *conn = nvkm_uconn(object); + + switch (mthd) { + case NVIF_CONN_V0_HPD_STATUS: return nvkm_uconn_mthd_hpd_status(conn, argv, argc); + default: + break; + } + + return -EINVAL; +} + +static void * +nvkm_uconn_dtor(struct nvkm_object *object) +{ + struct nvkm_conn *conn = nvkm_uconn(object); + struct nvkm_disp *disp = conn->disp; + + spin_lock(&disp->client.lock); + conn->object.func = NULL; + spin_unlock(&disp->client.lock); + return NULL; +} + +static const struct nvkm_object_func +nvkm_uconn = { + .dtor = nvkm_uconn_dtor, + .mthd = nvkm_uconn_mthd, + .uevent = nvkm_uconn_uevent, +}; + +int +nvkm_uconn_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject) +{ + struct nvkm_disp *disp = nvkm_udisp(oclass->parent); + struct nvkm_conn *cont, *conn = NULL; + union nvif_conn_args *args = argv; + int ret; + + if (argc != sizeof(args->v0) || args->v0.version != 0) + return -ENOSYS; + + list_for_each_entry(cont, &disp->conns, head) { + if (cont->index == args->v0.id) { + conn = cont; + break; + } + } + + if (!conn) + return -EINVAL; + + ret = -EBUSY; + spin_lock(&disp->client.lock); + if (!conn->object.func) { + nvkm_object_ctor(&nvkm_uconn, oclass, &conn->object); + *pobject = &conn->object; + ret = 0; + } + spin_unlock(&disp->client.lock); + return ret; +} |