diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c new file mode 100644 index 000000000..7ed11801a --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c @@ -0,0 +1,134 @@ +/* + * 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 "conn.h" +#include "outp.h" +#include "priv.h" + +#include <subdev/gpio.h> + +#include <nvif/event.h> + +static int +nvkm_conn_hpd(struct nvkm_notify *notify) +{ + struct nvkm_conn *conn = container_of(notify, typeof(*conn), hpd); + struct nvkm_disp *disp = conn->disp; + struct nvkm_gpio *gpio = disp->engine.subdev.device->gpio; + const struct nvkm_gpio_ntfy_rep *line = notify->data; + struct nvif_notify_conn_rep_v0 rep; + int index = conn->index; + + CONN_DBG(conn, "HPD: %d", line->mask); + + if (!nvkm_gpio_get(gpio, 0, DCB_GPIO_UNUSED, conn->hpd.index)) + rep.mask = NVIF_NOTIFY_CONN_V0_UNPLUG; + else + rep.mask = NVIF_NOTIFY_CONN_V0_PLUG; + rep.version = 0; + + nvkm_event_send(&disp->hpd, rep.mask, index, &rep, sizeof(rep)); + return NVKM_NOTIFY_KEEP; +} + +void +nvkm_conn_fini(struct nvkm_conn *conn) +{ + nvkm_notify_put(&conn->hpd); +} + +void +nvkm_conn_init(struct nvkm_conn *conn) +{ + nvkm_notify_get(&conn->hpd); +} + +void +nvkm_conn_del(struct nvkm_conn **pconn) +{ + struct nvkm_conn *conn = *pconn; + if (conn) { + nvkm_notify_fini(&conn->hpd); + kfree(*pconn); + *pconn = NULL; + } +} + +static void +nvkm_conn_ctor(struct nvkm_disp *disp, int index, struct nvbios_connE *info, + struct nvkm_conn *conn) +{ + static const u8 hpd[] = { 0x07, 0x08, 0x51, 0x52, 0x5e, 0x5f, 0x60 }; + struct nvkm_gpio *gpio = disp->engine.subdev.device->gpio; + struct dcb_gpio_func func; + int ret; + + conn->disp = disp; + conn->index = index; + conn->info = *info; + conn->info.hpd = DCB_GPIO_UNUSED; + + CONN_DBG(conn, "type %02x loc %d hpd %02x dp %x di %x sr %x lcdid %x", + info->type, info->location, info->hpd, info->dp, + info->di, info->sr, info->lcdid); + + if ((info->hpd = ffs(info->hpd))) { + if (--info->hpd >= ARRAY_SIZE(hpd)) { + CONN_ERR(conn, "hpd %02x unknown", info->hpd); + return; + } + info->hpd = hpd[info->hpd]; + + ret = nvkm_gpio_find(gpio, 0, info->hpd, DCB_GPIO_UNUSED, &func); + if (ret) { + CONN_ERR(conn, "func %02x lookup failed, %d", info->hpd, ret); + return; + } + + conn->info.hpd = func.line; + + ret = nvkm_notify_init(NULL, &gpio->event, nvkm_conn_hpd, + true, &(struct nvkm_gpio_ntfy_req) { + .mask = NVKM_GPIO_TOGGLED, + .line = func.line, + }, + sizeof(struct nvkm_gpio_ntfy_req), + sizeof(struct nvkm_gpio_ntfy_rep), + &conn->hpd); + if (ret) { + CONN_ERR(conn, "func %02x failed, %d", info->hpd, ret); + } else { + CONN_DBG(conn, "func %02x (HPD)", info->hpd); + } + } +} + +int +nvkm_conn_new(struct nvkm_disp *disp, int index, struct nvbios_connE *info, + struct nvkm_conn **pconn) +{ + if (!(*pconn = kzalloc(sizeof(**pconn), GFP_KERNEL))) + return -ENOMEM; + nvkm_conn_ctor(disp, index, info, *pconn); + return 0; +} |