b43: LCN-PHY: tweaks for channel switching

They have been taken from brcmsmac, add Broadcom's copyright.

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

1 files changed, 63 insertions, 4 deletions

diff --git a/drivers/net/wireless/b43/phy_lcn.c b/drivers/net/wireless/b43/phy_lcn.c
index d1dfeec7bc28..06d8efc2f29f 100644
--- a/drivers/net/wireless/b43/phy_lcn.c
+++ b/drivers/net/wireless/b43/phy_lcn.c
@@ -20,6 +20,14 @@
   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
   Boston, MA 02110-1301, USA.
 
+  This file incorporates work covered by the following copyright and
+  permission notice:
+
+      Copyright (c) 2010 Broadcom Corporation
+
+      Permission to use, copy, modify, and/or distribute this software for any
+      purpose with or without fee is hereby granted, provided that the above
+      copyright notice and this permission notice appear in all copies.
 */
 
 #include <linux/slab.h>
@@ -278,14 +286,50 @@ static void b43_phy_lcn_sense_setup(struct b43_wldev *dev)
  * Channel switching ops.
  **************************************************/
 
-static int b43_phy_lcn_set_channel(struct b43_wldev *dev,
-                                   struct ieee80211_channel *channel,
-                                   enum nl80211_channel_type channel_type)
+/* wlc_lcnphy_set_chanspec_tweaks */
+static void b43_phy_lcn_set_channel_tweaks(struct b43_wldev *dev, int channel)
 {
-        /* TODO: PLL and PHY ops */
+        struct bcma_drv_cc *cc = &dev->dev->bdev->bus->drv_cc;
+
+        b43_phy_maskset(dev, 0x448, ~0x300, (channel == 14) ? 0x200 : 0x100);
+
+        if (channel == 1 || channel == 2 || channel == 3 || channel == 4 ||
+            channel == 9 || channel == 10 || channel == 11 || channel == 12) {
+                bcma_chipco_pll_write(cc, 0x2, 0x03000c04);
+                bcma_chipco_pll_maskset(cc, 0x3, 0x00ffffff, 0x0);
+                bcma_chipco_pll_write(cc, 0x4, 0x200005c0);
+
+                bcma_cc_set32(cc, BCMA_CC_PMU_CTL, 0x400);
+
+                b43_phy_write(dev, 0x942, 0);
+
+                /* b43_phy_lcn_txrx_spur_avoidance_mode(dev, false); */
+                b43_phy_maskset(dev, 0x424, (u16) ~0xff00, 0x1b00);
+                b43_phy_write(dev, 0x425, 0x5907);
+        } else {
+                bcma_chipco_pll_write(cc, 0x2, 0x03140c04);
+                bcma_chipco_pll_maskset(cc, 0x3, 0x00ffffff, 0x333333);
+                bcma_chipco_pll_write(cc, 0x4, 0x202c2820);
+
+                bcma_cc_set32(cc, BCMA_CC_PMU_CTL, 0x400);
+
+                b43_phy_write(dev, 0x942, 0);
+
+                /* b43_phy_lcn_txrx_spur_avoidance_mode(dev, true); */
+                b43_phy_maskset(dev, 0x424, (u16) ~0xff00, 0x1f00);
+                b43_phy_write(dev, 0x425, 0x590a);
+        }
 
         b43_phy_set(dev, 0x44a, 0x44);
         b43_phy_write(dev, 0x44a, 0x80);
+}
+
+/* wlc_phy_chanspec_set_lcnphy */
+static int b43_phy_lcn_set_channel(struct b43_wldev *dev,
+                                   struct ieee80211_channel *channel,
+                                   enum nl80211_channel_type channel_type)
+{
+        b43_phy_lcn_set_channel_tweaks(dev, channel->hw_value);
 
         b43_phy_set(dev, 0x44a, 0x44);
         b43_phy_write(dev, 0x44a, 0x80);
@@ -336,6 +380,8 @@ static void b43_phy_lcn_op_prepare_structs(struct b43_wldev *dev)
 /* wlc_phy_init_lcnphy */
 static int b43_phy_lcn_op_init(struct b43_wldev *dev)
 {
+        struct bcma_drv_cc *cc = &dev->dev->bdev->bus->drv_cc;
+
         b43_phy_set(dev, 0x44a, 0x80);
         b43_phy_mask(dev, 0x44a, 0x7f);
         b43_phy_set(dev, 0x6d1, 0x80);
@@ -359,6 +405,19 @@ static int b43_phy_lcn_op_init(struct b43_wldev *dev)
 
         b43_phy_lcn_sense_setup(dev);
 
+        b43_switch_channel(dev, dev->phy.channel);
+
+        bcma_chipco_regctl_maskset(cc, 0, 0xf, 0x9);
+        bcma_chipco_chipctl_maskset(cc, 0, 0, 0x03cddddd);
+
+        /* TODO */
+
+        b43_phy_set(dev, 0x448, 0x4000);
+        udelay(100);
+        b43_phy_mask(dev, 0x448, ~0x4000);
+
+        /* TODO */
+
         return 0;
 }