From 1b0a69c1ff445c265b173cc82c3f41a01dd90bec Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Fri, 16 Sep 2011 12:34:02 +0200 Subject: [PATCH] b43: LCN-PHY: init TX power control MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_lcn.c | 92 +++++++++++++++++++++++++++++- drivers/net/wireless/b43/phy_lcn.h | 2 + 2 files changed, 93 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/b43/phy_lcn.c b/drivers/net/wireless/b43/phy_lcn.c index 895164783c3b..8810bc99d28c 100644 --- a/drivers/net/wireless/b43/phy_lcn.c +++ b/drivers/net/wireless/b43/phy_lcn.c @@ -37,6 +37,13 @@ #include "tables_phy_lcn.h" #include "main.h" +struct lcn_tx_gains { + u16 gm_gain; + u16 pga_gain; + u16 pad_gain; + u16 dac_gain; +}; + struct lcn_tx_iir_filter { u8 type; u16 values[16]; @@ -198,6 +205,29 @@ static void b43_phy_lcn_afe_set_unset(struct b43_wldev *dev) b43_phy_write(dev, B43_PHY_LCN_AFE_CTL1, afe_ctl1); } +/* wlc_lcnphy_get_pa_gain */ +static u16 b43_phy_lcn_get_pa_gain(struct b43_wldev *dev) +{ + return (b43_phy_read(dev, 0x4fb) & 0x7f00) >> 8; +} + +/* wlc_lcnphy_set_dac_gain */ +static void b43_phy_lcn_set_dac_gain(struct b43_wldev *dev, u16 dac_gain) +{ + u16 dac_ctrl; + + dac_ctrl = b43_phy_read(dev, 0x439); + dac_ctrl = dac_ctrl & 0xc7f; + dac_ctrl = dac_ctrl | (dac_gain << 7); + b43_phy_maskset(dev, 0x439, ~0xfff, dac_ctrl); +} + +/* wlc_lcnphy_set_bbmult */ +static void b43_phy_lcn_set_bbmult(struct b43_wldev *dev, u8 m0) +{ + b43_lcntab_write(dev, B43_LCNTAB16(0x00, 0x57), m0 << 8); +} + /* wlc_lcnphy_clear_tx_power_offsets */ static void b43_phy_lcn_clear_tx_power_offsets(struct b43_wldev *dev) { @@ -400,6 +430,65 @@ static bool b43_phy_lcn_load_tx_iir_ofdm_filter(struct b43_wldev *dev, return false; } +/* wlc_lcnphy_set_tx_gain_override */ +static void b43_phy_lcn_set_tx_gain_override(struct b43_wldev *dev, bool enable) +{ + b43_phy_maskset(dev, 0x4b0, ~(0x1 << 7), enable << 7); + b43_phy_maskset(dev, 0x4b0, ~(0x1 << 14), enable << 14); + b43_phy_maskset(dev, 0x43b, ~(0x1 << 6), enable << 6); +} + +/* wlc_lcnphy_set_tx_gain */ +static void b43_phy_lcn_set_tx_gain(struct b43_wldev *dev, + struct lcn_tx_gains *target_gains) +{ + u16 pa_gain = b43_phy_lcn_get_pa_gain(dev); + + b43_phy_write(dev, 0x4b5, + (target_gains->gm_gain | (target_gains->pga_gain << 8))); + b43_phy_maskset(dev, 0x4fb, ~0x7fff, + (target_gains->pad_gain | (pa_gain << 8))); + b43_phy_write(dev, 0x4fc, + (target_gains->gm_gain | (target_gains->pga_gain << 8))); + b43_phy_maskset(dev, 0x4fd, ~0x7fff, + (target_gains->pad_gain | (pa_gain << 8))); + + b43_phy_lcn_set_dac_gain(dev, target_gains->dac_gain); + b43_phy_lcn_set_tx_gain_override(dev, true); +} + +/* wlc_lcnphy_tx_pwr_ctrl_init */ +static void b43_phy_lcn_tx_pwr_ctl_init(struct b43_wldev *dev) +{ + struct lcn_tx_gains tx_gains; + u8 bbmult; + + b43_mac_suspend(dev); + + if (!dev->phy.lcn->hw_pwr_ctl_capable) { + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) { + tx_gains.gm_gain = 4; + tx_gains.pga_gain = 12; + tx_gains.pad_gain = 12; + tx_gains.dac_gain = 0; + bbmult = 150; + } else { + tx_gains.gm_gain = 7; + tx_gains.pga_gain = 15; + tx_gains.pad_gain = 14; + tx_gains.dac_gain = 0; + bbmult = 150; + } + b43_phy_lcn_set_tx_gain(dev, &tx_gains); + b43_phy_lcn_set_bbmult(dev, bbmult); + b43_phy_lcn_sense_setup(dev); /* TODO: TEMPSENSE as arg */ + } else { + b43err(dev->wl, "TX power control not supported for this HW\n"); + } + + b43_mac_enable(dev); +} + /* wlc_lcnphy_txrx_spur_avoidance_mode */ static void b43_phy_lcn_txrx_spur_avoidance_mode(struct b43_wldev *dev, bool enable) @@ -562,7 +651,8 @@ static int b43_phy_lcn_op_init(struct b43_wldev *dev) else B43_WARN_ON(1); - b43_phy_lcn_sense_setup(dev); + if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) + b43_phy_lcn_tx_pwr_ctl_init(dev); b43_switch_channel(dev, dev->phy.channel); diff --git a/drivers/net/wireless/b43/phy_lcn.h b/drivers/net/wireless/b43/phy_lcn.h index 25f06e8d4531..2a386d07fc23 100644 --- a/drivers/net/wireless/b43/phy_lcn.h +++ b/drivers/net/wireless/b43/phy_lcn.h @@ -19,6 +19,8 @@ struct b43_phy_lcn { + bool hw_pwr_ctl; + bool hw_pwr_ctl_capable; }; -- 2.20.1