diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_sysfs.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_sysfs.c b/drivers/gpu/drm/nouveau/nouveau_sysfs.c deleted file mode 100644 index 5dac3546c1b8..000000000000 --- a/drivers/gpu/drm/nouveau/nouveau_sysfs.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * Copyright 2013 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 <bskeggs@redhat.com> - */ - -#include <nvif/os.h> -#include <nvif/class.h> -#include <nvif/ioctl.h> - -#include "nouveau_sysfs.h" - -MODULE_PARM_DESC(pstate, "enable sysfs pstate file, which will be moved in the future"); -int nouveau_pstate; -module_param_named(pstate, nouveau_pstate, int, 0400); - -static inline struct drm_device * -drm_device(struct device *d) -{ - return dev_get_drvdata(d); -} - -#define snappendf(p,r,f,a...) do { \ - snprintf(p, r, f, ##a); \ - r -= strlen(p); \ - p += strlen(p); \ -} while(0) - -static ssize_t -nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b) -{ - struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d)); - struct nvif_control_pstate_info_v0 info = {}; - size_t cnt = PAGE_SIZE; - char *buf = b; - int ret, i; - - ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_INFO, - &info, sizeof(info)); - if (ret) - return ret; - - for (i = 0; i < info.count + 1; i++) { - const s32 state = i < info.count ? i : - NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT; - struct nvif_control_pstate_attr_v0 attr = { - .state = state, - .index = 0, - }; - - ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_ATTR, - &attr, sizeof(attr)); - if (ret) - return ret; - - if (i < info.count) - snappendf(buf, cnt, "%02x:", attr.state); - else - snappendf(buf, cnt, "%s:", info.pwrsrc == 0 ? "DC" : - info.pwrsrc == 1 ? "AC" : - "--"); - - attr.index = 0; - do { - attr.state = state; - ret = nvif_mthd(&sysfs->ctrl, - NVIF_CONTROL_PSTATE_ATTR, - &attr, sizeof(attr)); - if (ret) - return ret; - - snappendf(buf, cnt, " %s %d", attr.name, attr.min); - if (attr.min != attr.max) - snappendf(buf, cnt, "-%d", attr.max); - snappendf(buf, cnt, " %s", attr.unit); - } while (attr.index); - - if (state >= 0) { - if (info.ustate_ac == state) - snappendf(buf, cnt, " AC"); - if (info.ustate_dc == state) - snappendf(buf, cnt, " DC"); - if (info.pstate == state) - snappendf(buf, cnt, " *"); - } else { - if (info.ustate_ac < -1) - snappendf(buf, cnt, " AC"); - if (info.ustate_dc < -1) - snappendf(buf, cnt, " DC"); - } - - snappendf(buf, cnt, "\n"); - } - - return strlen(b); -} - -static ssize_t -nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a, - const char *buf, size_t count) -{ - struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d)); - struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL }; - long value, ret; - char *tmp; - - if ((tmp = strchr(buf, '\n'))) - *tmp = '\0'; - - if (!strncasecmp(buf, "dc:", 3)) { - args.pwrsrc = 0; - buf += 3; - } else - if (!strncasecmp(buf, "ac:", 3)) { - args.pwrsrc = 1; - buf += 3; - } - - if (!strcasecmp(buf, "none")) - args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN; - else - if (!strcasecmp(buf, "auto")) - args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON; - else { - ret = kstrtol(buf, 16, &value); - if (ret) - return ret; - args.ustate = value; - } - - ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_USER, - &args, sizeof(args)); - if (ret < 0) - return ret; - - return count; -} - -static DEVICE_ATTR(pstate, S_IRUGO | S_IWUSR, - nouveau_sysfs_pstate_get, nouveau_sysfs_pstate_set); - -void -nouveau_sysfs_fini(struct drm_device *dev) -{ - struct nouveau_sysfs *sysfs = nouveau_sysfs(dev); - struct nouveau_drm *drm = nouveau_drm(dev); - struct nvif_device *device = &drm->device; - - if (sysfs && sysfs->ctrl.priv) { - device_remove_file(nvxx_device(device)->dev, &dev_attr_pstate); - nvif_object_fini(&sysfs->ctrl); - } - - drm->sysfs = NULL; - kfree(sysfs); -} - -int -nouveau_sysfs_init(struct drm_device *dev) -{ - struct nouveau_drm *drm = nouveau_drm(dev); - struct nvif_device *device = &drm->device; - struct nouveau_sysfs *sysfs; - int ret; - - if (!nouveau_pstate) - return 0; - - sysfs = drm->sysfs = kzalloc(sizeof(*sysfs), GFP_KERNEL); - if (!sysfs) - return -ENOMEM; - - ret = nvif_object_init(&device->object, 0, NVIF_IOCTL_NEW_V0_CONTROL, - NULL, 0, &sysfs->ctrl); - if (ret == 0) - device_create_file(nvxx_device(device)->dev, &dev_attr_pstate); - - return 0; -} |