2 * Copyright 2021 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 #define nvkm_uconn(p) container_of((p), struct nvkm_conn, object)
26 #include <core/client.h>
27 #include <core/event.h>
28 #include <subdev/gpio.h>
29 #include <subdev/i2c.h>
31 #include <nvif/if0011.h>
34 nvkm_uconn_uevent_aux(struct nvkm_object *object, u64 token, u32 bits)
36 union nvif_conn_event_args args;
40 if (bits & NVKM_I2C_PLUG)
41 args.v0.types |= NVIF_CONN_EVENT_V0_PLUG;
42 if (bits & NVKM_I2C_UNPLUG)
43 args.v0.types |= NVIF_CONN_EVENT_V0_UNPLUG;
44 if (bits & NVKM_I2C_IRQ)
45 args.v0.types |= NVIF_CONN_EVENT_V0_IRQ;
47 return object->client->event(token, &args, sizeof(args.v0));
51 nvkm_uconn_uevent_gpio(struct nvkm_object *object, u64 token, u32 bits)
53 union nvif_conn_event_args args;
57 if (bits & NVKM_GPIO_HI)
58 args.v0.types |= NVIF_CONN_EVENT_V0_PLUG;
59 if (bits & NVKM_GPIO_LO)
60 args.v0.types |= NVIF_CONN_EVENT_V0_UNPLUG;
62 return object->client->event(token, &args, sizeof(args.v0));
66 nvkm_uconn_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
68 struct nvkm_conn *conn = nvkm_uconn(object);
69 struct nvkm_device *device = conn->disp->engine.subdev.device;
70 struct nvkm_outp *outp;
71 union nvif_conn_event_args *args = argv;
75 if (conn->info.hpd == DCB_GPIO_UNUSED)
80 if (argc != sizeof(args->v0) || args->v0.version != 0)
83 list_for_each_entry(outp, &conn->disp->outps, head) {
84 if (outp->info.connector == conn->index && outp->dp.aux) {
85 if (args->v0.types & NVIF_CONN_EVENT_V0_PLUG ) bits |= NVKM_I2C_PLUG;
86 if (args->v0.types & NVIF_CONN_EVENT_V0_UNPLUG) bits |= NVKM_I2C_UNPLUG;
87 if (args->v0.types & NVIF_CONN_EVENT_V0_IRQ ) bits |= NVKM_I2C_IRQ;
89 return nvkm_uevent_add(uevent, &device->i2c->event, outp->dp.aux->id, bits,
90 nvkm_uconn_uevent_aux);
94 if (args->v0.types & NVIF_CONN_EVENT_V0_PLUG ) bits |= NVKM_GPIO_HI;
95 if (args->v0.types & NVIF_CONN_EVENT_V0_UNPLUG) bits |= NVKM_GPIO_LO;
96 if (args->v0.types & NVIF_CONN_EVENT_V0_IRQ)
99 return nvkm_uevent_add(uevent, &device->gpio->event, conn->info.hpd, bits,
100 nvkm_uconn_uevent_gpio);
104 nvkm_uconn_mthd_hpd_status(struct nvkm_conn *conn, void *argv, u32 argc)
106 struct nvkm_gpio *gpio = conn->disp->engine.subdev.device->gpio;
107 union nvif_conn_hpd_status_args *args = argv;
109 if (argc != sizeof(args->v0) || args->v0.version != 0)
112 args->v0.support = gpio && conn->info.hpd != DCB_GPIO_UNUSED;
113 args->v0.present = 0;
115 if (args->v0.support) {
116 int ret = nvkm_gpio_get(gpio, 0, DCB_GPIO_UNUSED, conn->info.hpd);
118 if (WARN_ON(ret < 0)) {
119 args->v0.support = false;
123 args->v0.present = ret;
130 nvkm_uconn_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
132 struct nvkm_conn *conn = nvkm_uconn(object);
135 case NVIF_CONN_V0_HPD_STATUS: return nvkm_uconn_mthd_hpd_status(conn, argv, argc);
144 nvkm_uconn_dtor(struct nvkm_object *object)
146 struct nvkm_conn *conn = nvkm_uconn(object);
147 struct nvkm_disp *disp = conn->disp;
149 spin_lock(&disp->client.lock);
150 conn->object.func = NULL;
151 spin_unlock(&disp->client.lock);
155 static const struct nvkm_object_func
157 .dtor = nvkm_uconn_dtor,
158 .mthd = nvkm_uconn_mthd,
159 .uevent = nvkm_uconn_uevent,
163 nvkm_uconn_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject)
165 struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
166 struct nvkm_conn *cont, *conn = NULL;
167 union nvif_conn_args *args = argv;
170 if (argc != sizeof(args->v0) || args->v0.version != 0)
173 list_for_each_entry(cont, &disp->conns, head) {
174 if (cont->index == args->v0.id) {
184 spin_lock(&disp->client.lock);
185 if (!conn->object.func) {
186 nvkm_object_ctor(&nvkm_uconn, oclass, &conn->object);
187 *pobject = &conn->object;
190 spin_unlock(&disp->client.lock);