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drm/nvc0: implement crtc pll setting

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-08-04 22:08:03 +10:00
parent 0165d15dba
commit 1ac7b528a0
2 changed files with 21 additions and 4 deletions
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2
drivers/gpu/drm/nouveau/nouveau_bios.c
View file

@ -4828,7 +4828,7 @@ int get_pll_limits(struct drm_device *dev, uint32_t limit_match, struct pll_lims
pll_lim->min_p = record[12];
pll_lim->max_p = record[13];
/* where did this go to?? */
if (limit_match == 0x00614100 || limit_match == 0x00614900)
if ((entry[0] & 0xf0) == 0x80)
pll_lim->refclk = 27000;
else
pll_lim->refclk = 100000;

23
drivers/gpu/drm/nouveau/nv50_crtc.c
View file

@ -264,11 +264,16 @@ nv50_crtc_set_scale(struct nouveau_crtc *nv_crtc, int scaling_mode, bool update)
int
nv50_crtc_set_clock(struct drm_device *dev, int head, int pclk)
{
uint32_t reg = NV50_PDISPLAY_CRTC_CLK_CTRL1(head);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct pll_lims pll;
uint32_t reg1, reg2;
uint32_t reg, reg1, reg2;
int ret, N1, M1, N2, M2, P;
if (dev_priv->chipset < NV_C0)
reg = NV50_PDISPLAY_CRTC_CLK_CTRL1(head);
else
reg = 0x614140 + (head * 0x800);
ret = get_pll_limits(dev, reg, &pll);
if (ret)
return ret;
@ -286,7 +291,8 @@ nv50_crtc_set_clock(struct drm_device *dev, int head, int pclk)
nv_wr32(dev, reg, 0x10000611);
nv_wr32(dev, reg + 4, reg1 | (M1 << 16) | N1);
nv_wr32(dev, reg + 8, reg2 | (P << 28) | (M2 << 16) | N2);
} else {
} else
if (dev_priv->chipset < NV_C0) {
ret = nv50_calc_pll2(dev, &pll, pclk, &N1, &N2, &M1, &P);
if (ret <= 0)
return 0;
@ -298,6 +304,17 @@ nv50_crtc_set_clock(struct drm_device *dev, int head, int pclk)
nv_wr32(dev, reg, 0x50000610);
nv_wr32(dev, reg + 4, reg1 | (P << 16) | (M1 << 8) | N1);
nv_wr32(dev, reg + 8, N2);
} else {
ret = nv50_calc_pll2(dev, &pll, pclk, &N1, &N2, &M1, &P);
if (ret <= 0)
return 0;
NV_DEBUG(dev, "pclk %d out %d N %d fN 0x%04x M %d P %d\n",
pclk, ret, N1, N2, M1, P);
nv_mask(dev, reg + 0x0c, 0x00000000, 0x00000100);
nv_wr32(dev, reg + 0x04, (P << 16) | (N1 << 8) | M1);
nv_wr32(dev, reg + 0x10, N2 << 16);
}
return 0;