b43: HT-PHY: implement MAC reclocking

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/b43/phy_ht.c b/drivers/net/wireless/b43/phy_ht.c
index 558f77c..9d2a7e5 100644 (file)
--- a/drivers/net/wireless/b43/phy_ht.c
+++ b/drivers/net/wireless/b43/phy_ht.c
@@ -290,6 +290,7 @@ static void b43_phy_ht_spur_avoid(struct b43_wldev *dev,
 {
        struct bcma_device *core = dev->dev->bdev;
        int spuravoid = 0;
+       u16 tmp;
 
        /* Check for 13 and 14 is just a guess, we don't have enough logs. */
        if (new_channel->hw_value == 13 || new_channel->hw_value == 14)
@@ -301,6 +302,23 @@ static void b43_phy_ht_spur_avoid(struct b43_wldev *dev,
                          B43_BCMA_CLKCTLST_PHY_PLL_REQ,
                          B43_BCMA_CLKCTLST_80211_PLL_ST |
                          B43_BCMA_CLKCTLST_PHY_PLL_ST, false);
+
+       /* Values has been taken from wlc_bmac_switch_macfreq comments */
+       switch (spuravoid) {
+       case 2: /* 126MHz */
+               tmp = 0x2082;
+               break;
+       case 1: /* 123MHz */
+               tmp = 0x5341;
+               break;
+       default: /* 120MHz */
+               tmp = 0x8889;
+       }
+
+       b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_LOW, tmp);
+       b43_write16(dev, B43_MMIO_TSF_CLK_FRAC_HIGH, 0x8);
+
+       /* TODO: reset PLL */
 }
 
 static void b43_phy_ht_channel_setup(struct b43_wldev *dev,