1 /* 2 * Copyright 2014 Red Hat Inc. 3 * 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: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 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. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "conn.h" 25 #include "outp.h" 26 #include "priv.h" 27 28 #include <subdev/gpio.h> 29 30 #include <nvif/event.h> 31 32 static int 33 nvkm_connector_hpd(struct nvkm_notify *notify) 34 { 35 struct nvkm_connector *conn = container_of(notify, typeof(*conn), hpd); 36 struct nvkm_disp *disp = nvkm_disp(conn); 37 struct nvkm_gpio *gpio = nvkm_gpio(conn); 38 const struct nvkm_gpio_ntfy_rep *line = notify->data; 39 struct nvif_notify_conn_rep_v0 rep; 40 int index = conn->index; 41 42 DBG("HPD: %d\n", line->mask); 43 44 if (!gpio->get(gpio, 0, DCB_GPIO_UNUSED, conn->hpd.index)) 45 rep.mask = NVIF_NOTIFY_CONN_V0_UNPLUG; 46 else 47 rep.mask = NVIF_NOTIFY_CONN_V0_PLUG; 48 rep.version = 0; 49 50 nvkm_event_send(&disp->hpd, rep.mask, index, &rep, sizeof(rep)); 51 return NVKM_NOTIFY_KEEP; 52 } 53 54 int 55 _nvkm_connector_fini(struct nvkm_object *object, bool suspend) 56 { 57 struct nvkm_connector *conn = (void *)object; 58 nvkm_notify_put(&conn->hpd); 59 return nvkm_object_fini(&conn->base, suspend); 60 } 61 62 int 63 _nvkm_connector_init(struct nvkm_object *object) 64 { 65 struct nvkm_connector *conn = (void *)object; 66 int ret = nvkm_object_init(&conn->base); 67 if (ret == 0) 68 nvkm_notify_get(&conn->hpd); 69 return ret; 70 } 71 72 void 73 _nvkm_connector_dtor(struct nvkm_object *object) 74 { 75 struct nvkm_connector *conn = (void *)object; 76 nvkm_notify_fini(&conn->hpd); 77 nvkm_object_destroy(&conn->base); 78 } 79 80 int 81 nvkm_connector_create_(struct nvkm_object *parent, 82 struct nvkm_object *engine, 83 struct nvkm_oclass *oclass, 84 struct nvbios_connE *info, int index, 85 int length, void **pobject) 86 { 87 static const u8 hpd[] = { 0x07, 0x08, 0x51, 0x52, 0x5e, 0x5f, 0x60 }; 88 struct nvkm_disp *disp = nvkm_disp(parent); 89 struct nvkm_gpio *gpio = nvkm_gpio(parent); 90 struct nvkm_connector *conn; 91 struct nvkm_output *outp; 92 struct dcb_gpio_func func; 93 int ret; 94 95 list_for_each_entry(outp, &disp->outp, head) { 96 if (outp->conn && outp->conn->index == index) { 97 atomic_inc(&nv_object(outp->conn)->refcount); 98 *pobject = outp->conn; 99 return 1; 100 } 101 } 102 103 ret = nvkm_object_create_(parent, engine, oclass, 0, length, pobject); 104 conn = *pobject; 105 if (ret) 106 return ret; 107 108 conn->info = *info; 109 conn->index = index; 110 111 DBG("type %02x loc %d hpd %02x dp %x di %x sr %x lcdid %x\n", 112 info->type, info->location, info->hpd, info->dp, 113 info->di, info->sr, info->lcdid); 114 115 if ((info->hpd = ffs(info->hpd))) { 116 if (--info->hpd >= ARRAY_SIZE(hpd)) { 117 ERR("hpd %02x unknown\n", info->hpd); 118 return 0; 119 } 120 info->hpd = hpd[info->hpd]; 121 122 ret = gpio->find(gpio, 0, info->hpd, DCB_GPIO_UNUSED, &func); 123 if (ret) { 124 ERR("func %02x lookup failed, %d\n", info->hpd, ret); 125 return 0; 126 } 127 128 ret = nvkm_notify_init(NULL, &gpio->event, nvkm_connector_hpd, 129 true, &(struct nvkm_gpio_ntfy_req) { 130 .mask = NVKM_GPIO_TOGGLED, 131 .line = func.line, 132 }, 133 sizeof(struct nvkm_gpio_ntfy_req), 134 sizeof(struct nvkm_gpio_ntfy_rep), 135 &conn->hpd); 136 if (ret) { 137 ERR("func %02x failed, %d\n", info->hpd, ret); 138 } else { 139 DBG("func %02x (HPD)\n", info->hpd); 140 } 141 } 142 143 return 0; 144 } 145 146 int 147 _nvkm_connector_ctor(struct nvkm_object *parent, 148 struct nvkm_object *engine, 149 struct nvkm_oclass *oclass, void *info, u32 index, 150 struct nvkm_object **pobject) 151 { 152 struct nvkm_connector *conn; 153 int ret; 154 155 ret = nvkm_connector_create(parent, engine, oclass, info, index, &conn); 156 *pobject = nv_object(conn); 157 if (ret) 158 return ret; 159 160 return 0; 161 } 162 163 struct nvkm_oclass * 164 nvkm_connector_oclass = &(struct nvkm_connector_impl) { 165 .base = { 166 .handle = 0, 167 .ofuncs = &(struct nvkm_ofuncs) { 168 .ctor = _nvkm_connector_ctor, 169 .dtor = _nvkm_connector_dtor, 170 .init = _nvkm_connector_init, 171 .fini = _nvkm_connector_fini, 172 }, 173 }, 174 }.base; 175