diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_calc.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nv50_calc.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_calc.c b/drivers/gpu/drm/nouveau/nv50_calc.c deleted file mode 100644 index 8cf63a8b30cd..000000000000 --- a/drivers/gpu/drm/nouveau/nv50_calc.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * 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" - -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; -} - -int -nva3_calc_pll(struct drm_device *dev, struct pll_lims *pll, int clk, - int *pN, int *pfN, int *pM, int *P) -{ - u32 best_err = ~0, err; - int M, lM, hM, N, fN; - - *P = pll->vco1.maxfreq / clk; - if (*P > pll->max_p) - *P = pll->max_p; - if (*P < pll->min_p) - *P = pll->min_p; - - lM = (pll->refclk + pll->vco1.max_inputfreq) / pll->vco1.max_inputfreq; - lM = max(lM, (int)pll->vco1.min_m); - hM = (pll->refclk + pll->vco1.min_inputfreq) / pll->vco1.min_inputfreq; - hM = min(hM, (int)pll->vco1.max_m); - - for (M = lM; M <= hM; M++) { - u32 tmp = clk * *P * M; - N = tmp / pll->refclk; - fN = tmp % pll->refclk; - if (!pfN && fN >= pll->refclk / 2) - N++; - - if (N < pll->vco1.min_n) - continue; - if (N > pll->vco1.max_n) - break; - - err = abs(clk - (pll->refclk * N / M / *P)); - if (err < best_err) { - best_err = err; - *pN = N; - *pM = M; - } - - if (pfN) { - *pfN = (((fN << 13) / pll->refclk) - 4096) & 0xffff; - return clk; - } - } - - if (unlikely(best_err == ~0)) { - NV_ERROR(dev, "unable to find matching pll values\n"); - return -EINVAL; - } - - return pll->refclk * *pN / *pM / *P; -} |