2 * Copyright 2010 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
27 #include "nouveau_drv.h"
28 #include "nouveau_pm.h"
31 nouveau_pm_clock_set(struct drm_device *dev, u8 id, u32 khz)
33 struct drm_nouveau_private *dev_priv = dev->dev_private;
34 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
40 pre_state = pm->clock_pre(dev, id, khz);
41 if (IS_ERR(pre_state))
42 return PTR_ERR(pre_state);
45 pm->clock_set(dev, pre_state);
50 nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
52 struct drm_nouveau_private *dev_priv = dev->dev_private;
53 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
54 struct nouveau_pm_level *perflvl = NULL;
57 /* safety precaution, for now */
58 if (nouveau_perflvl_wr != 7777)
64 if (!strncmp(profile, "boot", 4))
67 int pl = simple_strtol(profile, NULL, 10);
70 for (i = 0; i < pm->nr_perflvl; i++) {
71 if (pm->perflvl[i].id == pl) {
72 perflvl = &pm->perflvl[i];
81 if (perflvl == pm->cur)
84 NV_INFO(dev, "setting performance level: %s\n", profile);
85 if (pm->voltage.supported && pm->voltage_set && perflvl->voltage) {
86 ret = pm->voltage_set(dev, perflvl->voltage);
88 NV_ERROR(dev, "voltage_set %d failed: %d\n",
89 perflvl->voltage, ret);
93 nouveau_pm_clock_set(dev, PLL_CORE, perflvl->core);
94 nouveau_pm_clock_set(dev, PLL_SHADER, perflvl->shader);
95 nouveau_pm_clock_set(dev, PLL_MEMORY, perflvl->memory);
96 nouveau_pm_clock_set(dev, PLL_UNK05, perflvl->unk05);
103 nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
105 struct drm_nouveau_private *dev_priv = dev->dev_private;
106 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
112 memset(perflvl, 0, sizeof(*perflvl));
114 ret = pm->clock_get(dev, PLL_CORE);
118 ret = pm->clock_get(dev, PLL_MEMORY);
120 perflvl->memory = ret;
122 ret = pm->clock_get(dev, PLL_SHADER);
124 perflvl->shader = ret;
126 ret = pm->clock_get(dev, PLL_UNK05);
128 perflvl->unk05 = ret;
130 if (pm->voltage.supported && pm->voltage_get) {
131 ret = pm->voltage_get(dev);
133 perflvl->voltage = ret;
140 nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
142 char s[16], v[16], f[16];
146 snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
149 if (perflvl->voltage)
150 snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage * 10);
153 if (perflvl->fanspeed)
154 snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
156 snprintf(ptr, len, "core %dMHz memory %dMHz%s%s%s\n",
157 perflvl->core / 1000, perflvl->memory / 1000, s, v, f);
161 nouveau_pm_get_perflvl_info(struct device *d,
162 struct device_attribute *a, char *buf)
164 struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
168 snprintf(ptr, len, "%d: ", perflvl->id);
172 nouveau_pm_perflvl_info(perflvl, ptr, len);
177 nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
179 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
180 struct drm_nouveau_private *dev_priv = dev->dev_private;
181 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
182 struct nouveau_pm_level cur;
183 int len = PAGE_SIZE, ret;
187 snprintf(ptr, len, "setting: boot\n");
188 else if (pm->cur == &pm->boot)
189 snprintf(ptr, len, "setting: boot\nc: ");
191 snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id);
195 ret = nouveau_pm_perflvl_get(dev, &cur);
197 nouveau_pm_perflvl_info(&cur, ptr, len);
202 nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
203 const char *buf, size_t count)
205 struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
208 ret = nouveau_pm_profile_set(dev, buf);
214 DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
215 nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
218 nouveau_pm_init(struct drm_device *dev)
220 struct drm_nouveau_private *dev_priv = dev->dev_private;
221 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
222 struct device *d = &dev->pdev->dev;
226 nouveau_volt_init(dev);
227 nouveau_perf_init(dev);
229 NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
230 for (i = 0; i < pm->nr_perflvl; i++) {
231 nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
232 NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);
235 /* determine current ("boot") performance level */
236 ret = nouveau_pm_perflvl_get(dev, &pm->boot);
240 nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
241 NV_INFO(dev, "c: %s", info);
244 /* switch performance levels now if requested */
245 if (nouveau_perflvl != NULL) {
246 ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
248 NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
249 nouveau_perflvl, ret);
253 /* initialise sysfs */
254 ret = device_create_file(d, &dev_attr_performance_level);
258 for (i = 0; i < pm->nr_perflvl; i++) {
259 struct nouveau_pm_level *perflvl = &pm->perflvl[i];
261 perflvl->dev_attr.attr.name = perflvl->name;
262 perflvl->dev_attr.attr.mode = S_IRUGO;
263 perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
264 perflvl->dev_attr.store = NULL;
265 sysfs_attr_init(&perflvl->dev_attr.attr);
267 ret = device_create_file(d, &perflvl->dev_attr);
269 NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
271 perflvl->dev_attr.attr.name = NULL;
272 nouveau_pm_fini(dev);
281 nouveau_pm_fini(struct drm_device *dev)
283 struct drm_nouveau_private *dev_priv = dev->dev_private;
284 struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
285 struct device *d = &dev->pdev->dev;
288 device_remove_file(d, &dev_attr_performance_level);
289 for (i = 0; i < pm->nr_perflvl; i++) {
290 struct nouveau_pm_level *pl = &pm->perflvl[i];
292 if (!pl->dev_attr.attr.name)
295 device_remove_file(d, &pl->dev_attr);
298 nouveau_perf_fini(dev);
299 nouveau_volt_fini(dev);