135 lines
3.7 KiB
C
135 lines
3.7 KiB
C
/*
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* Copyright 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "conn.h"
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#include "outp.h"
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#include "priv.h"
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#include <subdev/gpio.h>
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#include <nvif/event.h>
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static int
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nvkm_conn_hpd(struct nvkm_notify *notify)
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{
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struct nvkm_conn *conn = container_of(notify, typeof(*conn), hpd);
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struct nvkm_disp *disp = conn->disp;
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struct nvkm_gpio *gpio = disp->engine.subdev.device->gpio;
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const struct nvkm_gpio_ntfy_rep *line = notify->data;
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struct nvif_notify_conn_rep_v0 rep;
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int index = conn->index;
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CONN_DBG(conn, "HPD: %d", line->mask);
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if (!nvkm_gpio_get(gpio, 0, DCB_GPIO_UNUSED, conn->hpd.index))
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rep.mask = NVIF_NOTIFY_CONN_V0_UNPLUG;
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else
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rep.mask = NVIF_NOTIFY_CONN_V0_PLUG;
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rep.version = 0;
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nvkm_event_send(&disp->hpd, rep.mask, index, &rep, sizeof(rep));
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return NVKM_NOTIFY_KEEP;
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}
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void
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nvkm_conn_fini(struct nvkm_conn *conn)
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{
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nvkm_notify_put(&conn->hpd);
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}
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void
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nvkm_conn_init(struct nvkm_conn *conn)
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{
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nvkm_notify_get(&conn->hpd);
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}
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void
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nvkm_conn_del(struct nvkm_conn **pconn)
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{
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struct nvkm_conn *conn = *pconn;
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if (conn) {
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nvkm_notify_fini(&conn->hpd);
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kfree(*pconn);
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*pconn = NULL;
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}
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}
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static void
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nvkm_conn_ctor(struct nvkm_disp *disp, int index, struct nvbios_connE *info,
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struct nvkm_conn *conn)
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{
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static const u8 hpd[] = { 0x07, 0x08, 0x51, 0x52, 0x5e, 0x5f, 0x60 };
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struct nvkm_gpio *gpio = disp->engine.subdev.device->gpio;
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struct dcb_gpio_func func;
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int ret;
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conn->disp = disp;
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conn->index = index;
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conn->info = *info;
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conn->info.hpd = DCB_GPIO_UNUSED;
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CONN_DBG(conn, "type %02x loc %d hpd %02x dp %x di %x sr %x lcdid %x",
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info->type, info->location, info->hpd, info->dp,
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info->di, info->sr, info->lcdid);
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if ((info->hpd = ffs(info->hpd))) {
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if (--info->hpd >= ARRAY_SIZE(hpd)) {
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CONN_ERR(conn, "hpd %02x unknown", info->hpd);
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return;
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}
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info->hpd = hpd[info->hpd];
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ret = nvkm_gpio_find(gpio, 0, info->hpd, DCB_GPIO_UNUSED, &func);
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if (ret) {
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CONN_ERR(conn, "func %02x lookup failed, %d", info->hpd, ret);
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return;
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}
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conn->info.hpd = func.line;
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ret = nvkm_notify_init(NULL, &gpio->event, nvkm_conn_hpd,
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true, &(struct nvkm_gpio_ntfy_req) {
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.mask = NVKM_GPIO_TOGGLED,
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.line = func.line,
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},
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sizeof(struct nvkm_gpio_ntfy_req),
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sizeof(struct nvkm_gpio_ntfy_rep),
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&conn->hpd);
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if (ret) {
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CONN_ERR(conn, "func %02x failed, %d", info->hpd, ret);
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} else {
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CONN_DBG(conn, "func %02x (HPD)", info->hpd);
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}
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}
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}
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int
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nvkm_conn_new(struct nvkm_disp *disp, int index, struct nvbios_connE *info,
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struct nvkm_conn **pconn)
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{
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if (!(*pconn = kzalloc(sizeof(**pconn), GFP_KERNEL)))
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return -ENOMEM;
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nvkm_conn_ctor(disp, index, info, *pconn);
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return 0;
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}
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