b43: move MAC PHY clock controling function

This is not N-PHY specific function, we partially duplicate code.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index f7582c0..1e6a2ad 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2685,6 +2685,17 @@
 	dev->mac_suspended++;
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/MacPhyClkSet */
+void b43_mac_phy_clock_set(struct b43_wldev *dev, bool on)
+{
+	u32 tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
+	if (on)
+		tmslow |= B43_TMSLOW_MACPHYCLKEN;
+	else
+		tmslow &= ~B43_TMSLOW_MACPHYCLKEN;
+	ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
+}
+
 static void b43_adjust_opmode(struct b43_wldev *dev)
 {
 	struct b43_wl *wl = dev->wl;
@@ -2841,7 +2852,7 @@
 {
 	struct b43_phy *phy = &dev->phy;
 	int err;
-	u32 value32, macctl;
+	u32 macctl;
 	u16 value16;
 
 	/* Initialize the MAC control */
@@ -2919,9 +2930,7 @@
 	b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
 	b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
 
-	value32 = ssb_read32(dev->dev, SSB_TMSLOW);
-	value32 |= 0x00100000;
-	ssb_write32(dev->dev, SSB_TMSLOW, value32);
+	b43_mac_phy_clock_set(dev, true);
 
 	b43_write16(dev, B43_MMIO_POWERUP_DELAY,
 		    dev->dev->bus->chipco.fast_pwrup_delay);