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| author | Ben Skeggs <bskeggs@redhat.com> | 2012-02-02 11:43:31 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-05-24 16:31:20 +1000 |
| commit | 4719b55be5d43420b29e48c17208ec3db66e730f (patch) | |
| tree | 9077de3101181dd8c957b26e5aa6572f9ad84dca /drivers/gpu/drm | |
| parent | 30e533900ea74a3499dad5c4660ebaf80b50d152 (diff) | |
| download | linux-3.10-4719b55be5d43420b29e48c17208ec3db66e730f.tar.gz linux-3.10-4719b55be5d43420b29e48c17208ec3db66e730f.tar.bz2 linux-3.10-4719b55be5d43420b29e48c17208ec3db66e730f.zip | |
drm/nva3/pm: begin to restructure memory clock changes + another magic
The binary driver appears to do various bits and pieces of the memory
clock frequency change at different times, depending on the particular
transition that's occuring. I've attempted to replicate this here
for div->pll, pll->div and div->div transitions.
With some additional (patches upcoming) magic regs being bashed, this
allows me to correctly transition between all 3 perflvls on NVS300.
pll->pll transitions will *not* work correctly at the moment, pending
me tricking the binary driver into doing one and seeing how to correctly
handle it.
This patch also handles (hopefully) 0x1110e0, which appears to need
changing depending on whether in PLL or divider mode.. Maybe. We'll
see.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nva3_pm.c | 48 |
1 files changed, 40 insertions, 8 deletions
diff --git a/drivers/gpu/drm/nouveau/nva3_pm.c b/drivers/gpu/drm/nouveau/nva3_pm.c index 98588292c80..c9a1f63d1c9 100644 --- a/drivers/gpu/drm/nouveau/nva3_pm.c +++ b/drivers/gpu/drm/nouveau/nva3_pm.c @@ -360,14 +360,12 @@ mclk_clock_set(struct nouveau_mem_exec_func *exec) u32 freq = perflvl->memory; u8 *rammap, *ramcfg, ver, hdr, cnt, len; - nv_wr32(dev, 0x004018, 0x00001000); - - prog_pll(dev, 0x02, 0x004000, &info->mclk); - - if (nv_rd32(dev, 0x4000) & 0x00000008) - nv_wr32(dev, 0x004018, 0x1000d000); - else - nv_wr32(dev, 0x004018, 0x10005000); + if (!info->mclk.pll) { + nv_mask(dev, 0x004168, 0x003f3040, info->mclk.clk); + nv_mask(dev, 0x004000, 0x00000008, 0x00000008); + nv_mask(dev, 0x1110e0, 0x00088000, 0x00088000); + nv_wr32(dev, 0x004018, 0x1000d000); /*XXX*/ + } rammap = nouveau_perf_rammap(dev, freq, &ver, &hdr, &cnt, &len); if (rammap && ver == 0x10 && hdr >= 5) { @@ -388,6 +386,11 @@ mclk_clock_set(struct nouveau_mem_exec_func *exec) nv_mask(dev, 0x10f804, 0x80000000, 0x00000000); } } + + if (info->mclk.pll) { + nv_mask(dev, 0x1110e0, 0x00088000, 0x00011000); + nv_mask(dev, 0x004000, 0x00000008, 0x00000000); + } } static void @@ -439,10 +442,39 @@ prog_mem(struct drm_device *dev, struct nva3_pm_state *info) .timing_set = mclk_timing_set, .priv = info }; + u32 ctrl; + + ctrl = nv_rd32(dev, 0x004000); + if (ctrl & 0x00000008) { + if (info->mclk.pll) { + nv_mask(dev, 0x004128, 0x00000101, 0x00000101); + nv_wr32(dev, 0x004004, info->mclk.pll); + nv_wr32(dev, 0x004000, (ctrl |= 0x00000001)); + nv_wr32(dev, 0x004000, (ctrl &= 0xffffffef)); + nv_wait(dev, 0x004000, 0x00020000, 0x00020000); + nv_wr32(dev, 0x004000, (ctrl |= 0x00000010)); + nv_wr32(dev, 0x004018, 0x00005000); /*XXX*/ + nv_wr32(dev, 0x004000, (ctrl |= 0x00000004)); + } + } else { + if (!info->mclk.pll) { + nv_mask(dev, 0x004168, 0x003f3141, + 0x00000101 | info->mclk.clk); + } + } nv_wr32(dev, 0x611200, 0x00003300); nouveau_mem_exec(&exec, info->perflvl); nv_wr32(dev, 0x611200, 0x00003330); + + if (info->mclk.pll) { + nv_mask(dev, 0x004168, 0x00000001, 0x00000000); + nv_mask(dev, 0x004168, 0x00000100, 0x00000000); + } else { + nv_mask(dev, 0x004000, 0x00000001, 0x00000000); + nv_mask(dev, 0x004128, 0x00000001, 0x00000000); + nv_mask(dev, 0x004128, 0x00000100, 0x00000000); + } } int |