diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2010-01-22 01:53:16 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-01-22 16:11:40 -0500 |
| commit | 59af099b1956086b06c0d0f32ea99ce136b415b7 (patch) | |
| tree | 11a1f4ec01021d8e4bef70ec9ababc77d979500a | |
| parent | 45ca697e60eb5d3cac4530ae3a88f96c297efb09 (diff) | |
| download | linux-59af099b1956086b06c0d0f32ea99ce136b415b7.tar.bz2 | |
b43: N-PHY: add TX tone
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/b43/phy_n.c | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index 97a44e43d057..a45a1f3ced42 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -816,6 +816,43 @@ 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/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 @@ static void b43_nphy_run_samples(struct b43_wldev *dev, u16 samps, u16 loops, 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 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev, 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 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev, 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, |