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b43: HT-PHY: implement controlling TX power control

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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 <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2013-03-09 13:52:12 +01:00 committed by John W. Linville
parent a51ab25811
commit 60e8fb9233
2 changed files with 68 additions and 0 deletions
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55
drivers/net/wireless/b43/phy_ht.c
View file

@ -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;
}

13
drivers/net/wireless/b43/phy_ht.h
View file

@ -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];
};