b43: N-PHY: add TX tone
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 97a44e4..a45a1f3c 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -816,6 +816,43 @@
b43_nphy_stay_in_carrier_search(dev, 0);
}
+/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/GenLoadSamples */
+static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max,
+ bool test)
+{
+ int i;
+ u16 bw, len, num, rot, angle;
+ /* TODO: *buffer; */
+
+ bw = (dev->phy.is_40mhz) ? 40 : 20;
+ len = bw << 3;
+
+ if (test) {
+ if (b43_phy_read(dev, B43_NPHY_BBCFG) & B43_NPHY_BBCFG_RSTRX)
+ bw = 82;
+ else
+ bw = 80;
+
+ if (dev->phy.is_40mhz)
+ bw <<= 1;
+
+ len = bw << 1;
+ }
+
+ /* TODO: buffer = kzalloc(len * sizeof(u32), GFP_KERNEL); */
+ num = len;
+ rot = (((freq * 36) / bw) << 16) / 100;
+ angle = 0;
+
+ for (i = 0; i < num; i++) {
+ /* TODO */
+ }
+
+ /* TODO: Call N PHY Load Sample Table with buffer, num as arguments */
+ /* TODO: kfree(buffer); */
+ return num;
+}
+
/* 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)
@@ -876,6 +913,20 @@
b43_phy_write(dev, B43_NPHY_RFSEQMODE, seq_mode);
}
+/*
+ * Transmits a known value for LO calibration
+ * http://bcm-v4.sipsolutions.net/802.11/PHY/N/TXTone
+ */
+static int b43_nphy_tx_tone(struct b43_wldev *dev, u32 freq, u16 max_val,
+ bool iqmode, bool dac_test)
+{
+ u16 samp = b43_nphy_gen_load_samples(dev, freq, max_val, dac_test);
+ if (samp == 0)
+ return -1;
+ b43_nphy_run_samples(dev, samp, 0xFFFF, 0, iqmode, dac_test);
+ return 0;
+}
+
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/TxPwrCtrlCoefSetup */
static void b43_nphy_tx_pwr_ctrl_coef_setup(struct b43_wldev *dev)
{
@@ -1969,8 +2020,7 @@
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 */
+ error = b43_nphy_tx_tone(dev, freq, 250, true, false);
if (error == 0) {
if (nphy->mphase_cal_phase_id > 2) {
@@ -2254,9 +2304,9 @@
b43_nphy_stop_playback(dev);
if (playtone) {
- /* TODO: Call N PHY TX Tone with 4000,
- (nphy_rxcalparams & 0xffff), 0, 0
- as arguments and save result as ret */
+ ret = b43_nphy_tx_tone(dev, 4000,
+ (nphy->rxcalparams & 0xFFFF),
+ false, false);
playtone = false;
} else {
b43_nphy_run_samples(dev, 160, 0xFFFF, 0,