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
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include "nouveau_drv.h"
27 #include "nouveau_bios.h"
28 #include "nouveau_pm.h"
30 /*XXX: boards using limits 0x40 need fixing, the register layout
31 * is correct here, but, there's some other funny magic
32 * that modifies things, so it's not likely we'll set/read
33 * the correct timings yet.. working on it...
36 struct nv50_pm_state {
37 struct nouveau_pm_level *perflvl;
44 nv50_pm_clock_get(struct drm_device *dev, u32 id)
50 ret = get_pll_limits(dev, id, &pll);
54 if (pll.vco2.maxfreq) {
55 reg0 = nv_rd32(dev, pll.reg + 0);
56 reg1 = nv_rd32(dev, pll.reg + 4);
57 P = (reg0 & 0x00070000) >> 16;
58 N = (reg1 & 0x0000ff00) >> 8;
59 M = (reg1 & 0x000000ff);
61 return ((pll.refclk * N / M) >> P);
64 reg0 = nv_rd32(dev, pll.reg + 4);
65 P = (reg0 & 0x003f0000) >> 16;
66 N = (reg0 & 0x0000ff00) >> 8;
67 M = (reg0 & 0x000000ff);
68 return pll.refclk * N / M / P;
72 nv50_pm_clock_pre(struct drm_device *dev, struct nouveau_pm_level *perflvl,
75 struct nv50_pm_state *state;
78 state = kzalloc(sizeof(*state), GFP_KERNEL);
80 return ERR_PTR(-ENOMEM);
82 state->perflvl = perflvl;
84 ret = get_pll_limits(dev, id, &state->pll);
87 return (ret == -ENOENT) ? NULL : ERR_PTR(ret);
90 ret = nv50_calc_pll(dev, &state->pll, khz, &state->N, &state->M,
91 &dummy, &dummy, &state->P);
101 nv50_pm_clock_set(struct drm_device *dev, void *pre_state)
103 struct nv50_pm_state *state = pre_state;
104 struct nouveau_pm_level *perflvl = state->perflvl;
105 u32 reg = state->pll.reg, tmp;
106 struct bit_entry BIT_M;
112 if (state->type == PLL_MEMORY && perflvl->memscript &&
113 bit_table(dev, 'M', &BIT_M) == 0 &&
114 BIT_M.version == 1 && BIT_M.length >= 0x0b) {
115 script = ROM16(BIT_M.data[0x05]);
117 nouveau_bios_run_init_table(dev, script, NULL);
118 script = ROM16(BIT_M.data[0x07]);
120 nouveau_bios_run_init_table(dev, script, NULL);
121 script = ROM16(BIT_M.data[0x09]);
123 nouveau_bios_run_init_table(dev, script, NULL);
125 nouveau_bios_run_init_table(dev, perflvl->memscript, NULL);
128 if (state->pll.vco2.maxfreq) {
129 if (state->type == PLL_MEMORY) {
130 nv_wr32(dev, 0x100210, 0);
131 nv_wr32(dev, 0x1002dc, 1);
134 tmp = nv_rd32(dev, reg + 0) & 0xfff8ffff;
135 tmp |= 0x80000000 | (P << 16);
136 nv_wr32(dev, reg + 0, tmp);
137 nv_wr32(dev, reg + 4, (N << 8) | M);
139 if (state->type == PLL_MEMORY) {
140 nv_wr32(dev, 0x1002dc, 0);
141 nv_wr32(dev, 0x100210, 0x80000000);
144 nv_wr32(dev, reg + 4, (P << 16) | (N << 8) | M);