From patchwork Wed Aug 12 17:56:25 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?G=C3=A1bor_Stefanik?= X-Patchwork-Id: 40930 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n7CHuUms018914 for ; Wed, 12 Aug 2009 17:56:31 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751646AbZHLR41 (ORCPT ); Wed, 12 Aug 2009 13:56:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751869AbZHLR41 (ORCPT ); Wed, 12 Aug 2009 13:56:27 -0400 Received: from mail-fx0-f228.google.com ([209.85.220.228]:62565 "EHLO mail-fx0-f228.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751537AbZHLR4Z (ORCPT ); Wed, 12 Aug 2009 13:56:25 -0400 Received: by mail-fx0-f228.google.com with SMTP id 28so162168fxm.17 for ; Wed, 12 Aug 2009 10:56:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:cc:subject:content-type :content-transfer-encoding; bh=jJmDNk3UanFJvf+8DOkpjG+xEdsdrs7OfixvV4PXZEo=; b=FG4r4O7LTA5VSmuaUJucvqFPQOBQPQAGqG3+nnXTo8KV+gXvlWVytdGq9WtBM65CbO PLm4rXFACmzefLIQkVhbHf4V+YNi1TmkzppcfAymdEmD7M+r7nS4ucj8CxGMQFIBT2QN qv8dMuVopbn8dPt38+5VN2Y2GO/2I4orl09iE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; b=HFxlxHVRaepKrpxo+IbBpxDTd/DIn973FaH/lTtD5ceF9vmzqbwk9sjCYMUc3raQei bo7u7k3jfpA7a+YiR3RAkujYigGKoPCUXqfA/Naab3im+oRz27jEcfi1IRVkEclvFe0U WxzIVm1FbnN4lEP2qoyiELTBc73rtp+tt5F4Q= Received: by 10.103.52.13 with SMTP id e13mr108072muk.67.1250099786464; Wed, 12 Aug 2009 10:56:26 -0700 (PDT) Received: from ?192.168.1.2? (pool-00e33.externet.hu [212.40.100.50]) by mx.google.com with ESMTPS id u9sm30919166muf.7.2009.08.12.10.56.24 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 12 Aug 2009 10:56:25 -0700 (PDT) Message-ID: <4A830249.1010005@gmail.com> Date: Wed, 12 Aug 2009 19:56:25 +0200 From: =?UTF-8?B?R8OhYm9yIFN0ZWZhbmlr?= User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: John Linville , Michael Buesch , Larry Finger CC: Broadcom Wireless , linux-wireless Subject: [PATCH] b43: Implement RC calibration for rev.0/1 LP-PHYs Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Also implement get/set BB mult, get/set TX gain, set RX gain, disable/restore CRS, run/stop DDFS, RX IQ est and QDIV roundup in the process. Signed-off-by: Gábor Stefanik --- Larry, please review the "SPEC FIXME" comments! drivers/net/wireless/b43/phy_lp.c | 414 ++++++++++++++++++++++++++++++++++++- 1 files changed, 413 insertions(+), 1 deletions(-) diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c index 689c932..b283b58 100644 --- a/drivers/net/wireless/b43/phy_lp.c +++ b/drivers/net/wireless/b43/phy_lp.c @@ -605,6 +605,8 @@ static void lpphy_radio_init(struct b43_wldev *dev) } } +struct lpphy_iq_est { u32 iq_prod, i_pwr, q_pwr; }; + static void lpphy_set_rc_cap(struct b43_wldev *dev) { u8 rc_cap = dev->phy.lp->rc_cap; @@ -614,9 +616,419 @@ static void lpphy_set_rc_cap(struct b43_wldev *dev) b43_radio_write(dev, B2062_S_RXG_CNT16, ((rc_cap & 0x1F) >> 2) | 0x80); } +static u8 lpphy_get_bb_mult(struct b43_wldev *dev) +{ + return (b43_lptab_read(dev, B43_LPTAB16(0, 87)) & 0xFF00) >> 8; +} + +static void lpphy_set_bb_mult(struct b43_wldev *dev, u8 bb_mult) +{ + b43_lptab_write(dev, B43_LPTAB16(0, 87), (u16)bb_mult << 8); +} + +static void lpphy_disable_crs(struct b43_wldev *dev) +{ + b43_phy_maskset(dev, B43_LPPHY_CRSGAIN_CTL, 0xFF1F, 0x80); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFFC, 0x1); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x3); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFFB); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x4); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFFF7); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x8); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0x10); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x10); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFDF); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x20); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFBF); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x40); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0x7); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0x38); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFF3F); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0x100); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFDFF); + b43_phy_write(dev, B43_LPPHY_PS_CTL_OVERRIDE_VAL0, 0); + b43_phy_write(dev, B43_LPPHY_PS_CTL_OVERRIDE_VAL1, 1); + b43_phy_write(dev, B43_LPPHY_PS_CTL_OVERRIDE_VAL2, 0x20); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFBFF); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xF7FF); + b43_phy_write(dev, B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL, 0); + b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, 0x45AF); + b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_2, 0x3FF); +} + +static void lpphy_restore_crs(struct b43_wldev *dev) +{ + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) + b43_phy_maskset(dev, B43_LPPHY_CRSGAIN_CTL, 0xFF1F, 0x60); + else + b43_phy_maskset(dev, B43_LPPHY_CRSGAIN_CTL, 0xFF1F, 0x20); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFF80); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFC00); +} + +struct lpphy_tx_gains { u16 gm, pga, pad, dac; }; + +static struct lpphy_tx_gains lpphy_get_tx_gains(struct b43_wldev *dev) +{ + struct lpphy_tx_gains gains; + u16 tmp; + + gains.dac = (b43_phy_read(dev, B43_LPPHY_AFE_DAC_CTL) & 0x380) >> 7; + if (dev->phy.rev < 2) { + tmp = b43_phy_read(dev, + B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL) & 0x7FF; + gains.gm = tmp & 0x0007; + gains.pga = (tmp & 0x0078) >> 3; + gains.pad = (tmp & 0x780) >> 7; + } else { + tmp = b43_phy_read(dev, B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL); + gains.pad = b43_phy_read(dev, B43_PHY_OFDM(0xFB)) & 0xFF; + gains.gm = tmp & 0xFF; + gains.pga = (tmp>>8) & 0xFF; + } + + return gains; +} + +static void lpphy_set_dac_gain(struct b43_wldev *dev, u16 dac) +{ + u16 ctl = b43_phy_read(dev, B43_LPPHY_AFE_DAC_CTL) & 0xC7F; + ctl |= dac << 7; + b43_phy_maskset(dev, B43_LPPHY_AFE_DAC_CTL, 0xF000, ctl); +} + +static void lpphy_set_tx_gains(struct b43_wldev *dev, + struct lpphy_tx_gains gains) +{ + u16 rf_gain, pa_gain; + + if (dev->phy.rev < 2) { + rf_gain = (gains.pad << 7) | (gains.pga << 3) | gains.gm; + b43_phy_maskset(dev, B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL, + 0xF800, rf_gain); + } else { + pa_gain = b43_phy_read(dev, B43_PHY_OFDM(0xFB)) & 0x7F00; + b43_phy_write(dev, B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL, + (gains.pga << 8) | gains.gm); + b43_phy_maskset(dev, B43_LPPHY_TX_GAIN_CTL_OVERRIDE_VAL, + 0x8000, gains.pad | pa_gain); + b43_phy_write(dev, B43_PHY_OFDM(0xFC), + (gains.pga << 8) | gains.gm); + b43_phy_maskset(dev, B43_PHY_OFDM(0xFD), + 0x8000, gains.pad | pa_gain); + } + lpphy_set_dac_gain(dev, gains.dac); + if (dev->phy.rev < 2) { + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFEFF, 1<<8); + } else { + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFF7F, 1<<7); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2, 0xBFFF, 1<<14); + } + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFFBF, 1<<4); +} + +static void lpphy_rev0_1_set_rx_gain(struct b43_wldev *dev, u32 gain) +{ + u16 trsw = gain & 0x1; + u16 lna = (gain & 0xFFFC) | ((gain & 0xC) >> 2); + u16 ext_lna = (gain & 2) >> 1; + + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFFE, trsw); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFBFF, ext_lna<<10); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xF7FF, ext_lna<<11); + b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, lna); +} + +static void lpphy_rev2plus_set_rx_gain(struct b43_wldev *dev, u32 gain) +{ + u16 low_gain = gain & 0xFFFF; + u16 high_gain = (gain >> 16) & 0xF; + u16 ext_lna = (gain >> 21) & 0x1; + u16 trsw = ~(gain >> 21) & 0x1; + u16 tmp; + //SPEC FIXME is trsw really just ~(bool)ext_lna for rev2+? + + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFFE, trsw); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFDFF, ext_lna<<9); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFBFF, ext_lna<<10); + b43_phy_write(dev, B43_LPPHY_RX_GAIN_CTL_OVERRIDE_VAL, low_gain); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS, 0xFFF0, high_gain); + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) { + tmp = (gain >> 2) & 0x3; + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, + 0xE7FF, tmp<<11); + b43_phy_maskset(dev, B43_PHY_OFDM(0xE6), 0xFFE7, tmp<<3); + } +} + +static void lpphy_enable_rx_gain_override(struct b43_wldev *dev) +{ + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFFFE); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFFEF); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFFBF); + if (dev->phy.rev >= 2) { + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFEFF); + if (b43_current_band(dev->wl) != IEEE80211_BAND_2GHZ) + return; + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFBFF); + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFFF7); + } else { + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFDFF); + } +} + +static void lpphy_disable_rx_gain_override(struct b43_wldev *dev) +{ + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x1); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x10); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x40); + if (dev->phy.rev >= 2) { + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x100); + if (b43_current_band(dev->wl) != IEEE80211_BAND_2GHZ) + return; + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x400); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x8); + } else { + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x200); + } +} + +static void lpphy_set_rx_gain(struct b43_wldev *dev, u32 gain) +{ + if (dev->phy.rev < 2) + lpphy_rev0_1_set_rx_gain(dev, gain); + else + lpphy_rev2plus_set_rx_gain(dev, gain); + lpphy_enable_rx_gain_override(dev); +} + +static void lpphy_set_rx_gain_by_index(struct b43_wldev *dev, u16 idx) +{ + u32 gain = b43_lptab_read(dev, B43_LPTAB16(12, idx)); + lpphy_set_rx_gain(dev, gain); +} + +static void lpphy_stop_ddfs(struct b43_wldev *dev) +{ + b43_phy_mask(dev, B43_LPPHY_AFE_DDFS, 0xFFFD); + b43_phy_mask(dev, B43_LPPHY_LP_PHY_CTL, 0xFFDF); +} + +static void lpphy_run_ddfs(struct b43_wldev *dev, int i_on, int q_on, + int incr1, int incr2, int scale_idx) +{ + lpphy_stop_ddfs(dev); + b43_phy_mask(dev, B43_LPPHY_AFE_DDFS_POINTER_INIT, 0xFF80); + b43_phy_mask(dev, B43_LPPHY_AFE_DDFS_POINTER_INIT, 0x80FF); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS_INCR_INIT, 0xFF80, incr1); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS_INCR_INIT, 0x80FF, incr2 << 3); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS, 0xFFF7, i_on << 3); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS, 0xFFEF, q_on << 4); + b43_phy_maskset(dev, B43_LPPHY_AFE_DDFS, 0xFF9F, scale_idx << 5); + b43_phy_mask(dev, B43_LPPHY_AFE_DDFS, 0xFFFB); + b43_phy_set(dev, B43_LPPHY_AFE_DDFS, 0x2); + b43_phy_set(dev, B43_LPPHY_AFE_DDFS, 0x20); +} + +static bool lpphy_rx_iq_est(struct b43_wldev *dev, u16 samples, u8 time, + struct lpphy_iq_est *iq_est) +{ + int i; + + b43_phy_mask(dev, B43_LPPHY_CRSGAIN_CTL, 0xFFF7); + b43_phy_write(dev, B43_LPPHY_IQ_NUM_SMPLS_ADDR, samples); + b43_phy_maskset(dev, B43_LPPHY_IQ_ENABLE_WAIT_TIME_ADDR, 0xFF00, time); + b43_phy_mask(dev, B43_LPPHY_IQ_ENABLE_WAIT_TIME_ADDR, 0xFEFF); + b43_phy_set(dev, B43_LPPHY_IQ_ENABLE_WAIT_TIME_ADDR, 0xFDFF); + + for (i = 0; i < 500; i++) { + if (!(b43_phy_read(dev, + B43_LPPHY_IQ_ENABLE_WAIT_TIME_ADDR) & 0x200)) + break; + msleep(1); + } + + if ((b43_phy_read(dev, B43_LPPHY_IQ_ENABLE_WAIT_TIME_ADDR) & 0x200)) { + b43_phy_set(dev, B43_LPPHY_CRSGAIN_CTL, 0x8); + return false; + } + + iq_est->iq_prod = b43_phy_read(dev, B43_LPPHY_IQ_ACC_HI_ADDR); + iq_est->iq_prod <<= 16; + iq_est->iq_prod |= b43_phy_read(dev, B43_LPPHY_IQ_ACC_LO_ADDR); + + iq_est->i_pwr = b43_phy_read(dev, B43_LPPHY_IQ_I_PWR_ACC_HI_ADDR); + iq_est->i_pwr <<= 16; + iq_est->i_pwr |= b43_phy_read(dev, B43_LPPHY_IQ_I_PWR_ACC_LO_ADDR); + + iq_est->q_pwr = b43_phy_read(dev, B43_LPPHY_IQ_Q_PWR_ACC_HI_ADDR); + iq_est->q_pwr <<= 16; + iq_est->q_pwr |= b43_phy_read(dev, B43_LPPHY_IQ_Q_PWR_ACC_LO_ADDR); + + b43_phy_set(dev, B43_LPPHY_CRSGAIN_CTL, 0x8); + return true; +} + +static int lpphy_loopback(struct b43_wldev *dev) +{ + struct lpphy_iq_est iq_est; + int i, index = -1; + u32 tmp; + + memset(&iq_est, 0, sizeof(iq_est)); + + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0xFFFC, 0x3); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x3); + b43_phy_mask(dev, B43_LPPHY_AFE_CTL_OVRVAL, 0xFFFE); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x800); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0x800); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x8); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0x8); + b43_radio_write(dev, B2062_N_TX_CTL_A, 0x80); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_0, 0x80); + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, 0x80); + for (i = 0; i < 32; i++) { + lpphy_set_rx_gain_by_index(dev, i); + lpphy_run_ddfs(dev, 1, 1, 5, 5, 0); + if (!(lpphy_rx_iq_est(dev, 1000, 32, &iq_est))) + continue; + tmp = (iq_est.i_pwr + iq_est.q_pwr) / 1000; + if ((tmp > 4000) && (tmp < 10000)) { + index = i; + break; + } + } + lpphy_stop_ddfs(dev); + return index; +} + +u32 lpphy_qdiv_roundup(u32 dividend, u32 divisor, u8 precision) +{ + u32 quotient, remainder, rbit, roundup, tmp; + + if (divisor == 0) { + quotient = 0; + remainder = 0; + } else { + quotient = dividend / divisor; + remainder = dividend % divisor; + } + + rbit = divisor & 0x1; + roundup = (divisor >> 1) + rbit; + precision--; + + while (precision != 0xFF) { + tmp = remainder - roundup; + quotient <<= 1; + remainder <<= 1; + if (remainder >= roundup) { + remainder = (tmp << 1) + rbit; + quotient--; + } + precision--; + } + + if (remainder >= roundup) + quotient++; + + return quotient; +} + +static void lpphy_set_tx_power_control(struct b43_wldev *dev, + enum b43_lpphy_txpctl_mode mode); + static void lpphy_rev0_1_rc_calib(struct b43_wldev *dev) { - //TODO and SPEC FIXME + u32 ideal_pwr_table[22] = { + 0x10000, 0x10557, 0x10e2d, 0x113e0, 0x10f22, 0x0ff64, + 0x0eda2, 0x0e5d4, 0x0efd1, 0x0fbe8, 0x0b7b8, 0x04b35, + 0x01a5e, 0x00a0b, 0x00444, 0x001fd, 0x000ff, 0x00088, + 0x0004c, 0x0002c, 0x0001a, 0xc0006, + }; + bool old_txg_ovr; + u16 old_rf_ovr, old_rf_ovrval, old_afe_ovr, old_afe_ovrval, + old_rf2_ovr, old_rf2_ovrval, old_phy_ctl, old_txpctl; + u8 old_bbmult; + struct lpphy_iq_est iq_est; + struct lpphy_tx_gains tx_gains; + struct b43_phy_lp *lpphy = dev->phy.lp; + int loopback, i, j, inner_sum; + u32 normal_pwr, ideal_pwr, mean_sq_pwr, tmp = 0, mean_sq_pwr_min = 0; + + memset(&iq_est, 0, sizeof(iq_est)); + + b43_switch_channel(dev, 7); + old_txg_ovr = (b43_phy_read(dev, B43_LPPHY_AFE_CTL_OVR) >> 6) & 1; + old_bbmult = lpphy_get_bb_mult(dev); + if (old_txg_ovr) + tx_gains = lpphy_get_tx_gains(dev); + old_rf_ovr = b43_phy_read(dev, B43_LPPHY_RF_OVERRIDE_0); + old_rf_ovrval = b43_phy_read(dev, B43_LPPHY_RF_OVERRIDE_VAL_0); + old_afe_ovr = b43_phy_read(dev, B43_LPPHY_AFE_CTL_OVR); + old_afe_ovrval = b43_phy_read(dev, B43_LPPHY_AFE_CTL_OVRVAL); + old_rf2_ovr = b43_phy_read(dev, B43_LPPHY_RF_OVERRIDE_2); + old_rf2_ovrval = b43_phy_read(dev, B43_LPPHY_RF_OVERRIDE_2_VAL); + old_phy_ctl = b43_phy_read(dev, B43_LPPHY_LP_PHY_CTL); + old_txpctl = b43_phy_read(dev, B43_LPPHY_TX_PWR_CTL_CMD) & + B43_LPPHY_TX_PWR_CTL_CMD_MODE; + + lpphy_set_tx_power_control(dev, B43_LPPHY_TX_PWR_CTL_CMD_MODE_OFF); + lpphy_disable_crs(dev); + loopback = lpphy_loopback(dev); + if (loopback == -1) + goto finish; + lpphy_set_rx_gain_by_index(dev, loopback); + b43_phy_maskset(dev, B43_LPPHY_LP_PHY_CTL, 0xFFBF, 0x40); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFFF8, 0x1); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFFC7, 0x8); + b43_phy_maskset(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, 0xFF3F, 0xC0); + for (i = 128; i <= 159; i++) { + b43_radio_write(dev, B2062_N_RXBB_CALIB2, i); + inner_sum = 0; + for (j = 5; j <= 25; j++) { + lpphy_run_ddfs(dev, 1, 1, j, j, 0); + if (!(lpphy_rx_iq_est(dev, 1000, 32, &iq_est))) + goto finish; + mean_sq_pwr = iq_est.i_pwr + iq_est.q_pwr; + if (j == 5) + tmp = mean_sq_pwr; + ideal_pwr = ((ideal_pwr_table[j-5] >> 3) + 1) >> 1; + normal_pwr = lpphy_qdiv_roundup(mean_sq_pwr, tmp, 12); + mean_sq_pwr = ideal_pwr - normal_pwr; + mean_sq_pwr *= mean_sq_pwr; + inner_sum += mean_sq_pwr; + if ((i = 128) || (inner_sum < mean_sq_pwr_min)) { + lpphy->rc_cap = i; + mean_sq_pwr_min = inner_sum; + } + } + } + lpphy_stop_ddfs(dev); + +finish: + lpphy_restore_crs(dev); + b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_VAL_0, old_rf_ovrval); + b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_0, old_rf_ovr); + b43_phy_write(dev, B43_LPPHY_AFE_CTL_OVRVAL, old_afe_ovrval); + b43_phy_write(dev, B43_LPPHY_AFE_CTL_OVR, old_afe_ovr); + b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_2_VAL, old_rf2_ovrval); + b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_2, old_rf2_ovr); + b43_phy_write(dev, B43_LPPHY_LP_PHY_CTL, old_phy_ctl); + + lpphy_set_bb_mult(dev, old_bbmult); + if (old_txg_ovr) + /* + * SPEC FIXME: The specs say "get_tx_gains" here, which is + * illogical. According to lwfinger, vendor driver v4.150.10.5 + * has a Set here, while v4.174.64.19 has a Get - regression in + * the vendor driver? This should be tested this once the code + * is testable. + */ + lpphy_set_tx_gains(dev, tx_gains); + lpphy_set_tx_power_control(dev, old_txpctl); + if (lpphy->rc_cap) + lpphy_set_rc_cap(dev); } static void lpphy_rev2plus_rc_calib(struct b43_wldev *dev)