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b43: HT-PHY: implement CCA reset

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It was just another similar-to-N-PHY and easy-to-track routine:
write32 0xb0601408 <- 0x00002057
 phy_read(0x0001) -> 0x0000
phy_write(0x0001) <- 0x4000
phy_write(0x0001) <- 0x0000
write32 0xb0601408 <- 0x00002055
(b43_phy_ht_force_rf_sequence was moved up unmodified)

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2013-03-07 16:47:20 +01:00 committed by John W. Linville
parent d7bb7ca8e5
commit 4cce095623
1 changed files with 47 additions and 21 deletions
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68
drivers/net/wireless/b43/phy_ht.c
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@ -153,6 +153,31 @@ static void b43_radio_2059_init(struct b43_wldev *dev)
b43_radio_mask(dev, 0x11, ~0x0008);
}
/**************************************************
* RF
**************************************************/
static void b43_phy_ht_force_rf_sequence(struct b43_wldev *dev, u16 rf_seq)
{
u8 i;
u16 save_seq_mode = b43_phy_read(dev, B43_PHY_HT_RF_SEQ_MODE);
b43_phy_set(dev, B43_PHY_HT_RF_SEQ_MODE, 0x3);
b43_phy_set(dev, B43_PHY_HT_RF_SEQ_TRIG, rf_seq);
for (i = 0; i < 200; i++) {
if (!(b43_phy_read(dev, B43_PHY_HT_RF_SEQ_STATUS) & rf_seq)) {
i = 0;
break;
}
msleep(1);
}
if (i)
b43err(dev->wl, "Forcing RF sequence timeout\n");
b43_phy_write(dev, B43_PHY_HT_RF_SEQ_MODE, save_seq_mode);
}
/**************************************************
* Various PHY ops
**************************************************/
@ -173,6 +198,20 @@ static u16 b43_phy_ht_classifier(struct b43_wldev *dev, u16 mask, u16 val)
return tmp;
}
static void b43_phy_ht_reset_cca(struct b43_wldev *dev)
{
u16 bbcfg;
b43_phy_force_clock(dev, true);
bbcfg = b43_phy_read(dev, B43_PHY_HT_BBCFG);
b43_phy_write(dev, B43_PHY_HT_BBCFG, bbcfg | B43_PHY_HT_BBCFG_RSTCCA);
udelay(1);
b43_phy_write(dev, B43_PHY_HT_BBCFG, bbcfg & ~B43_PHY_HT_BBCFG_RSTCCA);
b43_phy_force_clock(dev, false);
b43_phy_ht_force_rf_sequence(dev, B43_PHY_HT_RF_SEQ_TRIG_RST2RX);
}
static void b43_phy_ht_zero_extg(struct b43_wldev *dev)
{
u8 i, j;
@ -209,27 +248,6 @@ static void b43_phy_ht_afe_unk1(struct b43_wldev *dev)
}
}
static void b43_phy_ht_force_rf_sequence(struct b43_wldev *dev, u16 rf_seq)
{
u8 i;
u16 save_seq_mode = b43_phy_read(dev, B43_PHY_HT_RF_SEQ_MODE);
b43_phy_set(dev, B43_PHY_HT_RF_SEQ_MODE, 0x3);
b43_phy_set(dev, B43_PHY_HT_RF_SEQ_TRIG, rf_seq);
for (i = 0; i < 200; i++) {
if (!(b43_phy_read(dev, B43_PHY_HT_RF_SEQ_STATUS) & rf_seq)) {
i = 0;
break;
}
msleep(1);
}
if (i)
b43err(dev->wl, "Forcing RF sequence timeout\n");
b43_phy_write(dev, B43_PHY_HT_RF_SEQ_MODE, save_seq_mode);
}
static void b43_phy_ht_read_clip_detection(struct b43_wldev *dev, u16 *clip_st)
{
clip_st[0] = b43_phy_read(dev, B43_PHY_HT_C1_CLIP1THRES);
@ -319,6 +337,14 @@ static void b43_phy_ht_spur_avoid(struct b43_wldev *dev,
b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
/* TODO: reset PLL */
if (spuravoid)
b43_phy_set(dev, B43_PHY_HT_BBCFG, B43_PHY_HT_BBCFG_RSTRX);
else
b43_phy_mask(dev, B43_PHY_HT_BBCFG,
~B43_PHY_HT_BBCFG_RSTRX & 0xFFFF);
b43_phy_ht_reset_cca(dev);
}
static void b43_phy_ht_channel_setup(struct b43_wldev *dev,