b43: N-PHY: implement stopping playback

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

2 files changed, 32 insertions, 3 deletions

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 1996843eac11..229f2d0364f2 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -749,6 +749,34 @@ static void b43_nphy_stay_in_carrier_search(struct b43_wldev *dev, bool enable)
         }
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/stop-playback */
+static void b43_nphy_stop_playback(struct b43_wldev *dev)
+{
+        struct b43_phy_n *nphy = dev->phy.n;
+        u16 tmp;
+
+        if (nphy->hang_avoid)
+                b43_nphy_stay_in_carrier_search(dev, 1);
+
+        tmp = b43_phy_read(dev, B43_NPHY_SAMP_STAT);
+        if (tmp & 0x1)
+                b43_phy_set(dev, B43_NPHY_SAMP_CMD, B43_NPHY_SAMP_CMD_STOP);
+        else if (tmp & 0x2)
+                b43_phy_mask(dev, B43_NPHY_IQLOCAL_CMDGCTL, (u16)~0x8000);
+
+        b43_phy_mask(dev, B43_NPHY_SAMP_CMD, ~0x0004);
+
+        if (nphy->bb_mult_save & 0x80000000) {
+                tmp = nphy->bb_mult_save & 0xFFFF;
+                /* TODO: Write an N PHY Table with ID 15, length 1, offset 87,
+                        width 16 and data from tmp */
+                nphy->bb_mult_save = 0;
+        }
+
+        if (nphy->hang_avoid)
+                b43_nphy_stay_in_carrier_search(dev, 0);
+}
+
 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxPwrCtrlCoefSetup */
 static void b43_nphy_tx_pwr_ctrl_coef_setup(struct b43_wldev *dev)
 {
@@ -1906,7 +1934,7 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
                                 nphy->mphase_txcal_bestcoeffs */
                 }
 
-                /* TODO: Call N PHY Stop Playback */
+                b43_nphy_stop_playback(dev);
                 b43_phy_write(dev, B43_NPHY_IQLOCAL_CMDGCTL, 0);
         }
 
@@ -2053,7 +2081,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
                         /* TODO:Call N PHY RF Ctrl Override with 0x400, tmp[0],
                                 3, 0 as arguments */
                         /* TODO: Call N PHY Force RF Seq with 2 as argument */
-                        /* TODO: Call N PHT Stop Playback */
+                        b43_nphy_stop_playback(dev);
 
                         if (playtone) {
                                 /* TODO: Call N PHY TX Tone with 4000,
@@ -2080,7 +2108,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
                                 } else {
                                         b43_nphy_calc_rx_iq_comp(dev, 1 << i);
                                 }
-                                /* TODO: Call N PHY Stop Playback */
+                                b43_nphy_stop_playback(dev);
                         }
 
                         if (ret != 0)
diff --git a/drivers/net/wireless/b43/phy_n.h b/drivers/net/wireless/b43/phy_n.h
index ae00e3f2d613..d6c92a81d3c0 100644
--- a/drivers/net/wireless/b43/phy_n.h
+++ b/drivers/net/wireless/b43/phy_n.h
@@ -974,6 +974,7 @@ struct b43_phy_n {
         bool mute;
         u16 papd_epsilon_offset[2];
         s32 preamble_override;
+        u32 bb_mult_save;
 
         u8 mphase_cal_phase_id;
         u16 mphase_txcal_cmdidx;