cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c

/*
 * 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_connector_hpd(struct nvkm_notify *notify) { struct nvkm_connector *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; }

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PersonTokensPropCommitsCommitProp
Ben Skeggs147100.00%5100.00%
Total147100.00%5100.00%


void nvkm_connector_fini(struct nvkm_connector *conn) { nvkm_notify_put(&conn->hpd); }

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PersonTokensPropCommitsCommitProp
Ben Skeggs18100.00%3100.00%
Total18100.00%3100.00%


void nvkm_connector_init(struct nvkm_connector *conn) { nvkm_notify_get(&conn->hpd); }

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Ben Skeggs18100.00%3100.00%
Total18100.00%3100.00%


void nvkm_connector_del(struct nvkm_connector **pconn) { struct nvkm_connector *conn = *pconn; if (conn) { nvkm_notify_fini(&conn->hpd); kfree(*pconn); *pconn = NULL; } }

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PersonTokensPropCommitsCommitProp
Ben Skeggs44100.00%3100.00%
Total44100.00%3100.00%


static void nvkm_connector_ctor(struct nvkm_disp *disp, int index, struct nvbios_connE *info, struct nvkm_connector *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_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; } ret = nvkm_notify_init(NULL, &gpio->event, nvkm_connector_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); } } }

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PersonTokensPropCommitsCommitProp
Ben Skeggs299100.00%7100.00%
Total299100.00%7100.00%


int nvkm_connector_new(struct nvkm_disp *disp, int index, struct nvbios_connE *info, struct nvkm_connector **pconn) { if (!(*pconn = kzalloc(sizeof(**pconn), GFP_KERNEL))) return -ENOMEM; nvkm_connector_ctor(disp, index, info, *pconn); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs63100.00%2100.00%
Total63100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs605100.00%7100.00%
Total605100.00%7100.00%
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