From 60e8fb9233e13e98b13a380ecc1cc05515e6e34c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sat, 9 Mar 2013 13:52:12 +0100 Subject: [PATCH] b43: HT-PHY: implement controlling TX power control MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Don't enable it until we have (almost?) whole TX power management figured out. It's similar to the N-PHY, the difference is that we call a "fix" *before* disabling power control. Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_ht.c | 55 +++++++++++++++++++++++++++++++ drivers/net/wireless/b43/phy_ht.h | 13 ++++++++ 2 files changed, 68 insertions(+) diff --git a/drivers/net/wireless/b43/phy_ht.c b/drivers/net/wireless/b43/phy_ht.c index 1998dca73faa..1663551f9428 100644 --- a/drivers/net/wireless/b43/phy_ht.c +++ b/drivers/net/wireless/b43/phy_ht.c @@ -319,6 +319,46 @@ static void b43_phy_ht_tx_power_fix(struct b43_wldev *dev) } } +#if 0 +static void b43_phy_ht_tx_power_ctl(struct b43_wldev *dev, bool enable) +{ + struct b43_phy_ht *phy_ht = dev->phy.ht; + u16 en_bits = B43_PHY_HT_TXPCTL_CMD_C1_COEFF | + B43_PHY_HT_TXPCTL_CMD_C1_HWPCTLEN | + B43_PHY_HT_TXPCTL_CMD_C1_PCTLEN; + static const u16 cmd_regs[3] = { B43_PHY_HT_TXPCTL_CMD_C1, + B43_PHY_HT_TXPCTL_CMD_C2, + B43_PHY_HT_TXPCTL_CMD_C3 }; + int i; + + if (!enable) { + if (b43_phy_read(dev, B43_PHY_HT_TXPCTL_CMD_C1) & en_bits) { + /* We disable enabled TX pwr ctl, save it's state */ + /* + * TODO: find the registers. On N-PHY they were 0x1ed + * and 0x1ee, we need 3 such a registers for HT-PHY + */ + } + b43_phy_mask(dev, B43_PHY_HT_TXPCTL_CMD_C1, ~en_bits); + } else { + b43_phy_set(dev, B43_PHY_HT_TXPCTL_CMD_C1, en_bits); + + if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ) { + for (i = 0; i < 3; i++) + b43_phy_write(dev, cmd_regs[i], 0x32); + } + + for (i = 0; i < 3; i++) + if (phy_ht->tx_pwr_idx[i] <= + B43_PHY_HT_TXPCTL_CMD_C1_INIT) + b43_phy_write(dev, cmd_regs[i], + phy_ht->tx_pwr_idx[i]); + } + + phy_ht->tx_pwr_ctl = enable; +} +#endif + /************************************************** * Channel switching ops. **************************************************/ @@ -455,14 +495,21 @@ static void b43_phy_ht_op_prepare_structs(struct b43_wldev *dev) { struct b43_phy *phy = &dev->phy; struct b43_phy_ht *phy_ht = phy->ht; + int i; memset(phy_ht, 0, sizeof(*phy_ht)); + + phy_ht->tx_pwr_ctl = true; + for (i = 0; i < 3; i++) + phy_ht->tx_pwr_idx[i] = B43_PHY_HT_TXPCTL_CMD_C1_INIT + 1; } static int b43_phy_ht_op_init(struct b43_wldev *dev) { + struct b43_phy_ht *phy_ht = dev->phy.ht; u16 tmp; u16 clip_state[3]; + bool saved_tx_pwr_ctl; if (dev->dev->bus_type != B43_BUS_BCMA) { b43err(dev->wl, "HT-PHY is supported only on BCMA bus!\n"); @@ -589,6 +636,14 @@ static int b43_phy_ht_op_init(struct b43_wldev *dev) b43_httab_write_bulk(dev, B43_HTTAB32(0x1a, 0xc0), B43_HTTAB_1A_C0_LATE_SIZE, b43_httab_0x1a_0xc0_late); + saved_tx_pwr_ctl = phy_ht->tx_pwr_ctl; + b43_phy_ht_tx_power_fix(dev); +#if 0 + b43_phy_ht_tx_power_ctl(dev, false); + /* TODO */ + b43_phy_ht_tx_power_ctl(dev, saved_tx_pwr_ctl); +#endif + return 0; } diff --git a/drivers/net/wireless/b43/phy_ht.h b/drivers/net/wireless/b43/phy_ht.h index 684807c2f125..bc7a43f58c61 100644 --- a/drivers/net/wireless/b43/phy_ht.h +++ b/drivers/net/wireless/b43/phy_ht.h @@ -22,6 +22,13 @@ #define B43_PHY_HT_BW4 0x1D1 #define B43_PHY_HT_BW5 0x1D2 #define B43_PHY_HT_BW6 0x1D3 +#define B43_PHY_HT_TXPCTL_CMD_C1 0x1E7 /* TX power control command */ +#define B43_PHY_HT_TXPCTL_CMD_C1_INIT 0x007F /* Init */ +#define B43_PHY_HT_TXPCTL_CMD_C1_COEFF 0x2000 /* Power control coefficients */ +#define B43_PHY_HT_TXPCTL_CMD_C1_HWPCTLEN 0x4000 /* Hardware TX power control enable */ +#define B43_PHY_HT_TXPCTL_CMD_C1_PCTLEN 0x8000 /* TX power control enable */ +#define B43_PHY_HT_TXPCTL_CMD_C2 0x222 +#define B43_PHY_HT_TXPCTL_CMD_C2_INIT 0x007F #define B43_PHY_HT_C1_CLIP1THRES B43_PHY_OFDM(0x00E) #define B43_PHY_HT_C2_CLIP1THRES B43_PHY_OFDM(0x04E) @@ -51,6 +58,9 @@ #define B43_PHY_HT_AFE_C3_OVER B43_PHY_EXTG(0x118) #define B43_PHY_HT_AFE_C3 B43_PHY_EXTG(0x119) +#define B43_PHY_HT_TXPCTL_CMD_C3 B43_PHY_EXTG(0x164) +#define B43_PHY_HT_TXPCTL_CMD_C3_INIT 0x007F + #define B43_PHY_HT_TEST B43_PHY_N_BMODE(0x00A) @@ -67,6 +77,9 @@ struct b43_phy_ht_channeltab_e_phy { struct b43_phy_ht { u16 rf_ctl_int_save[3]; + + bool tx_pwr_ctl; + u8 tx_pwr_idx[3]; }; -- 2.34.1