Signed-off-by: Karol Herbst <nouv...@karolherbst.de>
---
drm/nouveau/nouveau_debugfs.c | 144 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 142 insertions(+), 2 deletions(-)
diff --git a/drm/nouveau/nouveau_debugfs.c b/drm/nouveau/nouveau_debugfs.c
index 53d2233..d024ffa 100644
--- a/drm/nouveau/nouveau_debugfs.c
+++ b/drm/nouveau/nouveau_debugfs.c
@@ -45,6 +45,145 @@ nouveau_debugfs_vbios_image(struct seq_file *m, void *data)
return 0;
}
+static int
+nouveau_debugfs_pstate_get(struct seq_file *m, void *data)
+{
+ struct nouveau_debugfs *debugfs = nouveau_debugfs(m->private);
+ struct nvif_object *ctrl;
+ struct nvif_control_pstate_info_v0 info = {};
+ int ret, i;
+
+ if (!debugfs)
+ return -ENODEV;
+
+ ctrl = &debugfs->ctrl;
+
+ ret = nvif_mthd(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(ctrl, NVIF_CONTROL_PSTATE_ATTR,
+ &attr, sizeof(attr));
+ if (ret)
+ return ret;
+
+ if (i < info.count)
+ seq_printf(m, "%02x:", attr.state);
+ else
+ seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" :
+ info.pwrsrc == 1 ? "AC" :
+ "--");
+
+ attr.index = 0;
+ do {
+ attr.state = state;
+ ret = nvif_mthd(ctrl,
+ NVIF_CONTROL_PSTATE_ATTR,
+ &attr, sizeof(attr));
+ if (ret)
+ return ret;
+
+ seq_printf(m, " %s %d", attr.name, attr.min);
+ if (attr.min != attr.max)
+ seq_printf(m, "-%d", attr.max);
+ seq_printf(m, " %s", attr.unit);
+ } while (attr.index);
+
+ if (state >= 0) {
+ if (info.ustate_ac == state)
+ seq_printf(m, " AC");
+ if (info.ustate_dc == state)
+ seq_printf(m, " DC");
+ if (info.pstate == state)
+ seq_printf(m, " *");
+ } else {
+ if (info.ustate_ac < -1)
+ seq_printf(m, " AC");
+ if (info.ustate_dc < -1)
+ seq_printf(m, " DC");
+ }
+
+ seq_printf(m, "\n");
+ }
+
+ return 0;
+}
+
+static ssize_t
+nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf, size_t
len, loff_t *offp)
+{
+ struct seq_file *m = file->private_data;
+ struct nouveau_debugfs *debugfs = nouveau_debugfs(m->private);
+ struct nvif_object *ctrl;
+ struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
+ char buf[32] = {}, *tmp, *cur = buf;
+ long value, ret;
+
+ if (!debugfs)
+ return -ENODEV;
+
+ ctrl = &debugfs->ctrl;
+
+ if (len >= sizeof(buf))
+ return -EINVAL;
+
+ if (copy_from_user(buf, ubuf, len))
+ return -EFAULT;
+
+ if ((tmp = strchr(buf, '\n')))
+ *tmp = '\0';
+
+ if (!strncasecmp(cur, "dc:", 3)) {
+ args.pwrsrc = 0;
+ cur += 3;
+ } else
+ if (!strncasecmp(cur, "ac:", 3)) {
+ args.pwrsrc = 1;
+ cur += 3;
+ }
+
+ if (!strcasecmp(cur, "none"))
+ args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
+ else
+ if (!strcasecmp(cur, "auto"))
+ args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
+ else {
+ ret = kstrtol(cur, 16, &value);
+ if (ret)
+ return ret;
+ args.ustate = value;
+ }
+
+ ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER,
+ &args, sizeof(args));
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+
+static int
+nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
+}
+
+static const struct file_operations nouveau_pstate_fops = {
+ .owner = THIS_MODULE,
+ .open = nouveau_debugfs_pstate_open,
+ .read = seq_read,
+ .write = nouveau_debugfs_pstate_set,
+};
+
static struct drm_info_list nouveau_debugfs_list[] = {
{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
};
@@ -53,8 +192,9 @@ static struct drm_info_list nouveau_debugfs_list[] = {
static const struct nouveau_debugfs_files {
const char *name;
const struct file_operations *fops;
-} nouveau_debugfs_files[] = {};
-
+} nouveau_debugfs_files[] = {
+ {"pstate", &nouveau_pstate_fops},
+};
static int
nouveau_debugfs_create_file(struct drm_minor *minor,
--
2.6.1
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