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
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20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include "nouveau_drv.h"
27 #include "nouveau_hw.h"
28 #include "nouveau_pm.h"
30 struct nv04_pm_state {
32 struct nouveau_pll_vals calc;
36 nv04_pm_clock_get(struct drm_device *dev, u32 id)
38 return nouveau_hw_get_clock(dev, id);
42 nv04_pm_clock_pre(struct drm_device *dev, struct nouveau_pm_level *perflvl,
45 struct nv04_pm_state *state;
48 state = kzalloc(sizeof(*state), GFP_KERNEL);
50 return ERR_PTR(-ENOMEM);
52 ret = get_pll_limits(dev, id, &state->pll);
55 return (ret == -ENOENT) ? NULL : ERR_PTR(ret);
58 ret = nouveau_calc_pll_mnp(dev, &state->pll, khz, &state->calc);
61 return ERR_PTR(-EINVAL);
68 nv04_pm_clock_set(struct drm_device *dev, void *pre_state)
70 struct drm_nouveau_private *dev_priv = dev->dev_private;
71 struct nv04_pm_state *state = pre_state;
72 u32 reg = state->pll.reg;
74 /* thank the insane nouveau_hw_setpll() interface for this */
75 if (dev_priv->card_type >= NV_40)
78 nouveau_hw_setpll(dev, reg, &state->calc);