From 5904d2067680e9bb73a4816fa6b9eec49355c9c8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?G=C3=A1bor=20Stefanik?= Date: Tue, 18 Aug 2009 19:18:13 +0200 Subject: b43: LP-PHY: Implement spec updates and remove resolved FIXMEs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Larry has started re-checking all current routines against a new version of the Broadcom MIPS driver. This patch implements the first round of changes he documented on the specs wiki. Also remove a few FIXMEs regarding missing initial values for variables with dynamic initial values where reading the values has been implemented. Signed-off-by: Gábor Stefanik Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_lp.c | 98 ++++++++++++++++++++++++--------------- 1 file changed, 61 insertions(+), 37 deletions(-) (limited to 'drivers/net/wireless/b43/phy_lp.c') diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c index 37ba1777667..2d3a5d812c4 100644 --- a/drivers/net/wireless/b43/phy_lp.c +++ b/drivers/net/wireless/b43/phy_lp.c @@ -724,9 +724,39 @@ 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) +static void lpphy_set_deaf(struct b43_wldev *dev, bool user) { + struct b43_phy_lp *lpphy = dev->phy.lp; + + if (user) + lpphy->crs_usr_disable = 1; + else + lpphy->crs_sys_disable = 1; b43_phy_maskset(dev, B43_LPPHY_CRSGAIN_CTL, 0xFF1F, 0x80); +} + +static void lpphy_clear_deaf(struct b43_wldev *dev, bool user) +{ + struct b43_phy_lp *lpphy = dev->phy.lp; + + if (user) + lpphy->crs_usr_disable = 0; + else + lpphy->crs_sys_disable = 0; + + if (!lpphy->crs_usr_disable && !lpphy->crs_sys_disable) { + 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); + } +} + +static void lpphy_disable_crs(struct b43_wldev *dev, bool user) +{ + lpphy_set_deaf(dev, user); 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); @@ -754,12 +784,9 @@ static void lpphy_disable_crs(struct b43_wldev *dev) b43_phy_write(dev, B43_LPPHY_RF_OVERRIDE_2, 0x3FF); } -static void lpphy_restore_crs(struct b43_wldev *dev) +static void lpphy_restore_crs(struct b43_wldev *dev, bool user) { - 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); + lpphy_clear_deaf(dev, user); b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_0, 0xFF80); b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFC00); } @@ -805,10 +832,11 @@ static void lpphy_set_tx_gains(struct b43_wldev *dev, 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; + pa_gain = b43_phy_read(dev, B43_PHY_OFDM(0xFB)) & 0x1FC0; + pa_gain <<= 2; 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, + b43_phy_maskset(dev, B43_PHY_OFDM(0xFB), 0x8000, gains.pad | pa_gain); b43_phy_write(dev, B43_PHY_OFDM(0xFC), (gains.pga << 8) | gains.gm); @@ -822,7 +850,7 @@ static void lpphy_set_tx_gains(struct b43_wldev *dev, 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 << 6); + b43_phy_maskset(dev, B43_LPPHY_AFE_CTL_OVR, 0xFFBF, 1 << 6); } static void lpphy_rev0_1_set_rx_gain(struct b43_wldev *dev, u32 gain) @@ -862,33 +890,33 @@ static void lpphy_rev2plus_set_rx_gain(struct b43_wldev *dev, u32 gain) } } -static void lpphy_enable_rx_gain_override(struct b43_wldev *dev) +static void lpphy_disable_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); + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) { + b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFBFF); + b43_phy_mask(dev, B43_PHY_OFDM(0xE5), 0xFFF7); + } } else { b43_phy_mask(dev, B43_LPPHY_RF_OVERRIDE_2, 0xFDFF); } } -static void lpphy_disable_rx_gain_override(struct b43_wldev *dev) +static void lpphy_enable_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); + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) { + b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x400); + b43_phy_set(dev, B43_PHY_OFDM(0xE5), 0x8); + } } else { b43_phy_set(dev, B43_LPPHY_RF_OVERRIDE_2, 0x200); } @@ -1007,26 +1035,22 @@ static 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; - } + if (divisor == 0) + return 0; + + quotient = dividend / divisor; + remainder = dividend % divisor; rbit = divisor & 0x1; roundup = (divisor >> 1) + rbit; - precision--; - while (precision != 0xFF) { + while (precision != 0) { tmp = remainder - roundup; quotient <<= 1; - remainder <<= 1; - if (remainder >= roundup) { + if (remainder >= roundup) remainder = (tmp << 1) + rbit; - quotient--; - } + else + remainder <<= 1; precision--; } @@ -1128,11 +1152,11 @@ static void lpphy_rev0_1_rc_calib(struct b43_wldev *dev) struct b43_phy_lp *lpphy = dev->phy.lp; struct lpphy_iq_est iq_est; struct lpphy_tx_gains tx_gains; - static const u32 ideal_pwr_table[22] = { + static const u32 ideal_pwr_table[21] = { 0x10000, 0x10557, 0x10e2d, 0x113e0, 0x10f22, 0x0ff64, 0x0eda2, 0x0e5d4, 0x0efd1, 0x0fbe8, 0x0b7b8, 0x04b35, 0x01a5e, 0x00a0b, 0x00444, 0x001fd, 0x000ff, 0x00088, - 0x0004c, 0x0002c, 0x0001a, 0xc0006, + 0x0004c, 0x0002c, 0x0001a, }; bool old_txg_ovr; u8 old_bbmult; @@ -1150,7 +1174,7 @@ static void lpphy_rev0_1_rc_calib(struct b43_wldev *dev) "RC calib: Failed to switch to channel 7, error = %d", err); } - old_txg_ovr = (b43_phy_read(dev, B43_LPPHY_AFE_CTL_OVR) >> 6) & 1; + old_txg_ovr = !!(b43_phy_read(dev, B43_LPPHY_AFE_CTL_OVR) & 0x40); old_bbmult = lpphy_get_bb_mult(dev); if (old_txg_ovr) tx_gains = lpphy_get_tx_gains(dev); @@ -1165,7 +1189,7 @@ static void lpphy_rev0_1_rc_calib(struct b43_wldev *dev) old_txpctl = lpphy->txpctl_mode; lpphy_set_tx_power_control(dev, B43_LPPHY_TXPCTL_OFF); - lpphy_disable_crs(dev); + lpphy_disable_crs(dev, true); loopback = lpphy_loopback(dev); if (loopback == -1) goto finish; @@ -1198,7 +1222,7 @@ static void lpphy_rev0_1_rc_calib(struct b43_wldev *dev) lpphy_stop_ddfs(dev); finish: - lpphy_restore_crs(dev); + lpphy_restore_crs(dev, true); 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); -- cgit v1.2.3