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/*
* Copyright 2010 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 "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_hw.h"
struct nv04_pm_state {
struct pll_lims pll;
struct nouveau_pll_vals calc;
};
int
nv04_pm_clock_get(struct drm_device *dev, u32 id)
{
return nouveau_hw_get_clock(dev, id);
}
void *
nv04_pm_clock_pre(struct drm_device *dev, u32 id, int khz)
{
struct nv04_pm_state *state;
int ret;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return ERR_PTR(-ENOMEM);
ret = get_pll_limits(dev, id, &state->pll);
if (ret) {
kfree(state);
return (ret == -ENOENT) ? NULL : ERR_PTR(ret);
}
ret = nouveau_calc_pll_mnp(dev, &state->pll, khz, &state->calc);
if (!ret) {
kfree(state);
return ERR_PTR(-EINVAL);
}
return state;
}
void
nv04_pm_clock_set(struct drm_device *dev, void *pre_state)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv04_pm_state *state = pre_state;
u32 reg = state->pll.reg;
/* thank the insane nouveau_hw_setpll() interface for this */
if (dev_priv->card_type >= NV_40)
reg += 4;
nouveau_hw_setpll(dev, reg, &state->calc);
kfree(state);
}
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