b43: support bcma core reset on AC-PHY hardware

AC-PHY hardware includes new control 0x3 bits that need to be set to the
0x1 by default.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/b43/b43.h

@@ -500,6 +500,8 @@ enum {
 #define  B43_BCMA_IOCTL_PHY_BW_10MHZ	0x00000000	/* 10 MHz bandwidth, 40 MHz PHY */
 #define  B43_BCMA_IOCTL_PHY_BW_20MHZ	0x00000040	/* 20 MHz bandwidth, 80 MHz PHY */
 #define  B43_BCMA_IOCTL_PHY_BW_40MHZ	0x00000080	/* 40 MHz bandwidth, 160 MHz PHY */
+#define  B43_BCMA_IOCTL_PHY_BW_80MHZ	0x000000C0	/* 80 MHz bandwidth */
+#define B43_BCMA_IOCTL_DAC		0x00000300	/* Highspeed DAC mode control field */
 #define B43_BCMA_IOCTL_GMODE		0x00002000	/* G Mode Enable */
 
 /* BCMA 802.11 core specific IO status (BCMA_IOST) flags */

drivers/net/wireless/b43/main.c

@@ -1262,6 +1262,23 @@ static void b43_bcma_wireless_core_reset(struct b43_wldev *dev, bool gmode)
 		flags |= B43_BCMA_IOCTL_GMODE;
 	b43_device_enable(dev, flags);
 
+	if (dev->phy.type == B43_PHYTYPE_AC) {
+		u16 tmp;
+
+		tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
+		tmp &= ~B43_BCMA_IOCTL_DAC;
+		tmp |= 0x100;
+		bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
+
+		tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
+		tmp &= ~B43_BCMA_IOCTL_PHY_CLKEN;
+		bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
+
+		tmp = bcma_aread32(dev->dev->bdev, BCMA_IOCTL);
+		tmp |= B43_BCMA_IOCTL_PHY_CLKEN;
+		bcma_awrite32(dev->dev->bdev, BCMA_IOCTL, tmp);
+	}
+
 	bcma_core_set_clockmode(dev->dev->bdev, BCMA_CLKMODE_FAST);
 	b43_bcma_phy_reset(dev);
 	bcma_core_pll_ctl(dev->dev->bdev, req, status, true);