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path: root/drivers/gpu/drm/nouveau/nv50_calc.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_calc.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_calc.c97
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;
-}