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b43: N-PHY: implement spurious tone avoidance 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2011-12-11 13:16:51 +01:00 committed by John W. Linville
parent 38646ebae7
commit 49d55cef5b
1 changed files with 91 additions and 2 deletions
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93
drivers/net/wireless/b43/phy_n.c
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@ -4023,6 +4023,61 @@ int b43_phy_initn(struct b43_wldev *dev)
return 0;
}
/* http://bcm-v4.sipsolutions.net/802.11/PmuSpurAvoid */
static void b43_nphy_pmu_spur_avoid(struct b43_wldev *dev, bool avoid)
{
struct bcma_drv_cc *cc = &dev->dev->bdev->bus->drv_cc;
u32 pmu_ctl;
if (dev->dev->chip_id == 43224 || dev->dev->chip_id == 43225) {
if (avoid) {
bcma_chipco_pll_write(cc, 0x0, 0x11500010);
bcma_chipco_pll_write(cc, 0x1, 0x000C0C06);
bcma_chipco_pll_write(cc, 0x2, 0x0F600a08);
bcma_chipco_pll_write(cc, 0x3, 0x00000000);
bcma_chipco_pll_write(cc, 0x4, 0x2001E920);
bcma_chipco_pll_write(cc, 0x5, 0x88888815);
} else {
bcma_chipco_pll_write(cc, 0x0, 0x11100010);
bcma_chipco_pll_write(cc, 0x1, 0x000c0c06);
bcma_chipco_pll_write(cc, 0x2, 0x03000a08);
bcma_chipco_pll_write(cc, 0x3, 0x00000000);
bcma_chipco_pll_write(cc, 0x4, 0x200005c0);
bcma_chipco_pll_write(cc, 0x5, 0x88888815);
}
pmu_ctl = BCMA_CC_PMU_CTL_PLL_UPD;
} else if (dev->dev->chip_id == 0x4716) {
if (avoid) {
bcma_chipco_pll_write(cc, 0x0, 0x11500060);
bcma_chipco_pll_write(cc, 0x1, 0x080C0C06);
bcma_chipco_pll_write(cc, 0x2, 0x0F600000);
bcma_chipco_pll_write(cc, 0x3, 0x00000000);
bcma_chipco_pll_write(cc, 0x4, 0x2001E924);
bcma_chipco_pll_write(cc, 0x5, 0x88888815);
} else {
bcma_chipco_pll_write(cc, 0x0, 0x11100060);
bcma_chipco_pll_write(cc, 0x1, 0x080c0c06);
bcma_chipco_pll_write(cc, 0x2, 0x03000000);
bcma_chipco_pll_write(cc, 0x3, 0x00000000);
bcma_chipco_pll_write(cc, 0x4, 0x200005c0);
bcma_chipco_pll_write(cc, 0x5, 0x88888815);
}
pmu_ctl = BCMA_CC_PMU_CTL_PLL_UPD | BCMA_CC_PMU_CTL_NOILPONW;
} else if (dev->dev->chip_id == 0x4322 || dev->dev->chip_id == 0x4340 ||
dev->dev->chip_id == 0x4341) {
bcma_chipco_pll_write(cc, 0x0, 0x11100070);
bcma_chipco_pll_write(cc, 0x1, 0x1014140a);
bcma_chipco_pll_write(cc, 0x5, 0x88888854);
if (avoid)
bcma_chipco_pll_write(cc, 0x2, 0x05201828);
else
bcma_chipco_pll_write(cc, 0x2, 0x05001828);
pmu_ctl = BCMA_CC_PMU_CTL_PLL_UPD;
} else {
return;
}
bcma_cc_set32(cc, BCMA_CC_PMU_CTL, pmu_ctl);
}
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/ChanspecSetup */
static void b43_nphy_channel_setup(struct b43_wldev *dev,
const struct b43_phy_n_sfo_cfg *e,
@ -4030,6 +4085,7 @@ static void b43_nphy_channel_setup(struct b43_wldev *dev,
{
struct b43_phy *phy = &dev->phy;
struct b43_phy_n *nphy = dev->phy.n;
int ch = new_channel->hw_value;
u16 old_band_5ghz;
u32 tmp32;
@ -4069,8 +4125,41 @@ static void b43_nphy_channel_setup(struct b43_wldev *dev,
b43_nphy_tx_lp_fbw(dev);
if (dev->phy.rev >= 3 && 0) {
/* TODO */
if (dev->phy.rev >= 3 &&
dev->phy.n->spur_avoid != B43_SPUR_AVOID_DISABLE) {
bool avoid = false;
if (dev->phy.n->spur_avoid == B43_SPUR_AVOID_FORCE) {
avoid = true;
} else if (!b43_channel_type_is_40mhz(phy->channel_type)) {
if ((ch >= 5 && ch <= 8) || ch == 13 || ch == 14)
avoid = true;
} else { /* 40MHz */
if (nphy->aband_spurwar_en &&
(ch == 38 || ch == 102 || ch == 118))
avoid = dev->dev->chip_id == 0x4716;
}
b43_nphy_pmu_spur_avoid(dev, avoid);
if (dev->dev->chip_id == 43222 || dev->dev->chip_id == 43224 ||
dev->dev->chip_id == 43225) {
b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW,
avoid ? 0x5341 : 0x8889);
b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
}
if (dev->phy.rev == 3 || dev->phy.rev == 4)
; /* TODO: reset PLL */
if (avoid)
b43_phy_set(dev, B43_NPHY_BBCFG, B43_NPHY_BBCFG_RSTRX);
else
b43_phy_mask(dev, B43_NPHY_BBCFG,
~B43_NPHY_BBCFG_RSTRX & 0xFFFF);
b43_nphy_reset_cca(dev);
/* wl sets useless phy_isspuravoid here */
}
b43_phy_write(dev, B43_NPHY_NDATAT_DUP40, 0x3830);