1a64634255
It'd be pretty awesome if someone would care enough to port this all properly to a class interface, perhaps submitting a command stream to the core via a sw object on PFIFO (emulating how EVO works basically, and also what nvidia have done forever..).. But, this seems unlikely given how old this hardware is now, so, lets just hide it away. There's a heap of other bits and pieces laying around that are still tangled. I'll (re)move them in pieces. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*
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* Copyright 2010 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <drm/drmP.h>
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#include "nouveau_drm.h"
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#include "nouveau_reg.h"
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#include "dispnv04/hw.h"
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#include "nouveau_pm.h"
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#include <subdev/bios/pll.h>
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#include <subdev/clock.h>
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#include <subdev/timer.h>
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int
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nv04_pm_clocks_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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{
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int ret;
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ret = nouveau_hw_get_clock(dev, PLL_CORE);
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if (ret < 0)
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return ret;
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perflvl->core = ret;
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ret = nouveau_hw_get_clock(dev, PLL_MEMORY);
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if (ret < 0)
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return ret;
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perflvl->memory = ret;
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return 0;
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}
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struct nv04_pm_clock {
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struct nvbios_pll pll;
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struct nouveau_pll_vals calc;
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};
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struct nv04_pm_state {
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struct nv04_pm_clock core;
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struct nv04_pm_clock memory;
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};
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static int
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calc_pll(struct drm_device *dev, u32 id, int khz, struct nv04_pm_clock *clk)
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{
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struct nouveau_device *device = nouveau_dev(dev);
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struct nouveau_bios *bios = nouveau_bios(device);
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struct nouveau_clock *pclk = nouveau_clock(device);
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int ret;
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ret = nvbios_pll_parse(bios, id, &clk->pll);
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if (ret)
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return ret;
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ret = pclk->pll_calc(pclk, &clk->pll, khz, &clk->calc);
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if (!ret)
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return -EINVAL;
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return 0;
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}
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void *
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nv04_pm_clocks_pre(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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{
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struct nv04_pm_state *info;
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int ret;
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info = kzalloc(sizeof(*info), GFP_KERNEL);
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if (!info)
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return ERR_PTR(-ENOMEM);
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ret = calc_pll(dev, PLL_CORE, perflvl->core, &info->core);
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if (ret)
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goto error;
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if (perflvl->memory) {
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ret = calc_pll(dev, PLL_MEMORY, perflvl->memory, &info->memory);
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if (ret)
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goto error;
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}
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return info;
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error:
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kfree(info);
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return ERR_PTR(ret);
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}
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static void
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prog_pll(struct drm_device *dev, struct nv04_pm_clock *clk)
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{
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struct nouveau_device *device = nouveau_dev(dev);
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struct nouveau_clock *pclk = nouveau_clock(device);
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u32 reg = clk->pll.reg;
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/* thank the insane nouveau_hw_setpll() interface for this */
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if (device->card_type >= NV_40)
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reg += 4;
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pclk->pll_prog(pclk, reg, &clk->calc);
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}
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int
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nv04_pm_clocks_set(struct drm_device *dev, void *pre_state)
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{
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struct nouveau_device *device = nouveau_dev(dev);
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struct nouveau_timer *ptimer = nouveau_timer(device);
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struct nv04_pm_state *state = pre_state;
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prog_pll(dev, &state->core);
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if (state->memory.pll.reg) {
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prog_pll(dev, &state->memory);
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if (device->card_type < NV_30) {
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if (device->card_type == NV_20)
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nv_mask(device, 0x1002c4, 0, 1 << 20);
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/* Reset the DLLs */
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nv_mask(device, 0x1002c0, 0, 1 << 8);
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}
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}
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nv_ofuncs(ptimer)->init(nv_object(ptimer));
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kfree(state);
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return 0;
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}
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