void *
nv04_pm_clock_pre(struct drm_device *dev, struct nouveau_pm_level *perflvl,
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;
}
static int
calc_pll(struct drm_device *dev, u32 id, int khz, struct nv04_pm_clock *clk)
{
int ret;
ret = get_pll_limits(dev, id, &clk->pll);
if (ret)
return ret;
ret = nouveau_calc_pll_mnp(dev, &clk->pll, khz, &clk->calc);
if (!ret)
return -EINVAL;
return 0;
}
int
nv50_calc_pll(struct drm_device *dev, struct pll_lims *pll, int clk,
int *N1, int *M1, int *N2, int *M2, int *P)
{
struct nouveau_pll_vals pll_vals;
int ret;
ret = nouveau_calc_pll_mnp(dev, pll, clk, &pll_vals);
if (ret <= 0)
return ret;
*N1 = pll_vals.N1;
*M1 = pll_vals.M1;
*N2 = pll_vals.N2;
*M2 = pll_vals.M2;
*P = pll_vals.log2P;
return ret;
}
