b43: N-PHY: add running samples

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

drivers/net/wireless/b43/phy_n.c

@@ -816,6 +816,66 @@ static void b43_nphy_stop_playback(struct b43_wldev *dev)
 		b43_nphy_stay_in_carrier_search(dev, 0);
 }
 
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RunSamples */
+static void b43_nphy_run_samples(struct b43_wldev *dev, u16 samps, u16 loops,
+					u16 wait, bool iqmode, bool dac_test)
+{
+	struct b43_phy_n *nphy = dev->phy.n;
+	int i;
+	u16 seq_mode;
+	u32 tmp;
+
+	if (nphy->hang_avoid)
+		b43_nphy_stay_in_carrier_search(dev, true);
+
+	if ((nphy->bb_mult_save & 0x80000000) == 0) {
+		tmp = b43_ntab_read(dev, B43_NTAB16(15, 87));
+		nphy->bb_mult_save = (tmp & 0xFFFF) | 0x80000000;
+	}
+
+	if (!dev->phy.is_40mhz)
+		tmp = 0x6464;
+	else
+		tmp = 0x4747;
+	b43_ntab_write(dev, B43_NTAB16(15, 87), tmp);
+
+	if (nphy->hang_avoid)
+		b43_nphy_stay_in_carrier_search(dev, false);
+
+	b43_phy_write(dev, B43_NPHY_SAMP_DEPCNT, (samps - 1));
+
+	if (loops != 0xFFFF)
+		b43_phy_write(dev, B43_NPHY_SAMP_LOOPCNT, (loops - 1));
+	else
+		b43_phy_write(dev, B43_NPHY_SAMP_LOOPCNT, loops);
+
+	b43_phy_write(dev, B43_NPHY_SAMP_WAITCNT, wait);
+
+	seq_mode = b43_phy_read(dev, B43_NPHY_RFSEQMODE);
+
+	b43_phy_set(dev, B43_NPHY_RFSEQMODE, B43_NPHY_RFSEQMODE_CAOVER);
+	if (iqmode) {
+		b43_phy_mask(dev, B43_NPHY_IQLOCAL_CMDGCTL, 0x7FFF);
+		b43_phy_set(dev, B43_NPHY_IQLOCAL_CMDGCTL, 0x8000);
+	} else {
+		if (dac_test)
+			b43_phy_write(dev, B43_NPHY_SAMP_CMD, 5);
+		else
+			b43_phy_write(dev, B43_NPHY_SAMP_CMD, 1);
+	}
+	for (i = 0; i < 100; i++) {
+		if (b43_phy_read(dev, B43_NPHY_RFSEQST) & 1) {
+			i = 0;
+			break;
+		}
+		udelay(10);
+	}
+	if (i)
+		b43err(dev->wl, "run samples timeout\n");
+
+	b43_phy_write(dev, B43_NPHY_RFSEQMODE, seq_mode);
+}
+
 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxPwrCtrlCoefSetup */
 static void b43_nphy_tx_pwr_ctrl_coef_setup(struct b43_wldev *dev)
 {
@@ -1869,8 +1929,8 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 		freq = 5000;
 
 	if (nphy->mphase_cal_phase_id > 2)
-		;/* TODO: Call N PHY Run Samples with (band width * 8),
-			0xFFFF, 0, 1, 0 as arguments */
+		b43_nphy_run_samples(dev, (dev->phy.is_40mhz ? 40 : 20) * 8,
+					0xFFFF, 0, true, false);
 	else
 		;/* TODO: Call N PHY TX Tone with freq, 250, 1, 0 as arguments
 			and save result as error */
@@ -2162,8 +2222,8 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
 					as arguments and save result as ret */
 				playtone = false;
 			} else {
-				/* TODO: Call N PHY Run Samples with 160,
-					0xFFFF, 0, 0, 0 as arguments */
+				b43_nphy_run_samples(dev, 160, 0xFFFF, 0,
+							false, false);
 			}
 
 			if (ret == 0) {