[PATCH 4/5 V2] b43: HT-PHY: implement lacking 0x908 PHY reg op

[Rafał Miłecki]

Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
---
V2: do not negate masks

As always, I've hacked MMIO ops to return 0xFFFF for 0x908 PHY reg.
This allowed finding masks used by closed source driver.

At the beginning 0x908 PHY reg ops are following:
 phy_read(0x0908) -> 0xffff
phy_write(0x0908) <- 0x0002
(...)
 phy_read(0x0908) -> 0xffff
phy_write(0x0908) <- 0x0020
(...)
 phy_read(0x0908) -> 0xffff
phy_write(0x0908) <- 0x0200

Later this is always like this:
 phy_read(0x0908) -> 0xffff
phy_write(0x0908) <- 0x0000

We do not know the proper condition yet, let's use FIXME for it.
---
 drivers/net/wireless/b43/phy_ht.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/b43/phy_ht.c b/drivers/net/wireless/b43/phy_ht.c
index 42bea30..f09bb6e 100644
--- a/drivers/net/wireless/b43/phy_ht.c
+++ b/drivers/net/wireless/b43/phy_ht.c
@@ -104,9 +104,14 @@ static void b43_phy_ht_channel_setup(struct b43_wldev *dev,
 
 	/* TODO: separated function? */
 	for (i = 0; i < 3; i++) {
+		u16 mask;
 		u32 tmp = b43_httab_read(dev, B43_HTTAB32(26, 0xE8));
 
-		/* TODO: some op on PHY reg 0x908 */
+		if (0) /* FIXME */
+			mask = 0x2 << (i * 4);
+		else
+			mask = 0;
+		b43_phy_mask(dev, B43_PHY_EXTG(0x108), mask);
 
 		b43_httab_write(dev, B43_HTTAB16(7, 0x110 + i), tmp >> 16);
 		b43_httab_write(dev, B43_HTTAB8(13, 0x63 + (i * 4)),
-- 
1.7.1