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path: root/drivers/net/wireless/ath/ath5k/phy.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath5k/phy.c')
-rw-r--r--drivers/net/wireless/ath/ath5k/phy.c89
1 files changed, 51 insertions, 38 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 1b81c4778800..73c4fcd142bb 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -378,8 +378,6 @@ enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah)
u32 data, type;
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
- ATH5K_TRACE(ah->ah_sc);
-
if (ah->ah_rf_banks == NULL ||
ah->ah_gain.g_state == AR5K_RFGAIN_INACTIVE)
return AR5K_RFGAIN_INACTIVE;
@@ -1167,7 +1165,7 @@ static s16 ath5k_hw_get_median_noise_floor(struct ath5k_hw *ah)
* The median of the values in the history is then loaded into the
* hardware for its own use for RSSI and CCA measurements.
*/
-static void ath5k_hw_update_noise_floor(struct ath5k_hw *ah)
+void ath5k_hw_update_noise_floor(struct ath5k_hw *ah)
{
struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u32 val;
@@ -1248,7 +1246,6 @@ static void ath5k_hw_update_noise_floor(struct ath5k_hw *ah)
/*
* Perform a PHY calibration on RF5110
* -Fix BPSK/QAM Constellation (I/Q correction)
- * -Calculate Noise Floor
*/
static int ath5k_hw_rf5110_calibrate(struct ath5k_hw *ah,
struct ieee80211_channel *channel)
@@ -1335,8 +1332,6 @@ static int ath5k_hw_rf5110_calibrate(struct ath5k_hw *ah,
return ret;
}
- ath5k_hw_update_noise_floor(ah);
-
/*
* Re-enable RX/TX and beacons
*/
@@ -1348,22 +1343,20 @@ static int ath5k_hw_rf5110_calibrate(struct ath5k_hw *ah,
}
/*
- * Perform a PHY calibration on RF5111/5112 and newer chips
+ * Perform I/Q calibration on RF5111/5112 and newer chips
*/
-static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
- struct ieee80211_channel *channel)
+static int
+ath5k_hw_rf511x_iq_calibrate(struct ath5k_hw *ah)
{
u32 i_pwr, q_pwr;
s32 iq_corr, i_coff, i_coffd, q_coff, q_coffd;
int i;
- ATH5K_TRACE(ah->ah_sc);
if (!ah->ah_calibration ||
ath5k_hw_reg_read(ah, AR5K_PHY_IQ) & AR5K_PHY_IQ_RUN)
- goto done;
+ return 0;
/* Calibration has finished, get the results and re-run */
-
/* work around empty results which can apparently happen on 5212 */
for (i = 0; i <= 10; i++) {
iq_corr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_CORR);
@@ -1384,7 +1377,7 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
/* protect against divide by 0 and loss of sign bits */
if (i_coffd == 0 || q_coffd < 2)
- goto done;
+ return -1;
i_coff = (-iq_corr) / i_coffd;
i_coff = clamp(i_coff, -32, 31); /* signed 6 bit */
@@ -1410,17 +1403,6 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15);
AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, AR5K_PHY_IQ_RUN);
-done:
-
- /* TODO: Separate noise floor calibration from I/Q calibration
- * since noise floor calibration interrupts rx path while I/Q
- * calibration doesn't. We don't need to run noise floor calibration
- * as often as I/Q calibration.*/
- ath5k_hw_update_noise_floor(ah);
-
- /* Initiate a gain_F calibration */
- ath5k_hw_request_rfgain_probe(ah);
-
return 0;
}
@@ -1434,8 +1416,10 @@ int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
if (ah->ah_radio == AR5K_RF5110)
ret = ath5k_hw_rf5110_calibrate(ah, channel);
- else
- ret = ath5k_hw_rf511x_calibrate(ah, channel);
+ else {
+ ret = ath5k_hw_rf511x_iq_calibrate(ah);
+ ath5k_hw_request_rfgain_probe(ah);
+ }
return ret;
}
@@ -1693,7 +1677,6 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
int ath5k_hw_phy_disable(struct ath5k_hw *ah)
{
- ATH5K_TRACE(ah->ah_sc);
/*Just a try M.F.*/
ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
@@ -1709,8 +1692,6 @@ u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan)
u32 srev;
u16 ret;
- ATH5K_TRACE(ah->ah_sc);
-
/*
* Set the radio chip access register
*/
@@ -1755,8 +1736,6 @@ u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, unsigned int chan)
static void /*TODO:Boundary check*/
ath5k_hw_set_def_antenna(struct ath5k_hw *ah, u8 ant)
{
- ATH5K_TRACE(ah->ah_sc);
-
if (ah->ah_version != AR5K_AR5210)
ath5k_hw_reg_write(ah, ant & 0x7, AR5K_DEFAULT_ANTENNA);
}
@@ -1789,19 +1768,50 @@ ath5k_hw_set_fast_div(struct ath5k_hw *ah, u8 ee_mode, bool enable)
if (enable) {
AR5K_REG_WRITE_BITS(ah, AR5K_PHY_RESTART,
- AR5K_PHY_RESTART_DIV_GC, 0xc);
+ AR5K_PHY_RESTART_DIV_GC, 1);
AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_FAST_ANT_DIV,
AR5K_PHY_FAST_ANT_DIV_EN);
} else {
AR5K_REG_WRITE_BITS(ah, AR5K_PHY_RESTART,
- AR5K_PHY_RESTART_DIV_GC, 0x8);
+ AR5K_PHY_RESTART_DIV_GC, 0);
AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_FAST_ANT_DIV,
AR5K_PHY_FAST_ANT_DIV_EN);
}
}
+void
+ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode)
+{
+ u8 ant0, ant1;
+
+ /*
+ * In case a fixed antenna was set as default
+ * use the same switch table twice.
+ */
+ if (ah->ah_ant_mode == AR5K_ANTMODE_FIXED_A)
+ ant0 = ant1 = AR5K_ANT_SWTABLE_A;
+ else if (ah->ah_ant_mode == AR5K_ANTMODE_FIXED_B)
+ ant0 = ant1 = AR5K_ANT_SWTABLE_B;
+ else {
+ ant0 = AR5K_ANT_SWTABLE_A;
+ ant1 = AR5K_ANT_SWTABLE_B;
+ }
+
+ /* Set antenna idle switch table */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_ANT_CTL,
+ AR5K_PHY_ANT_CTL_SWTABLE_IDLE,
+ (ah->ah_ant_ctl[ee_mode][AR5K_ANT_CTL] |
+ AR5K_PHY_ANT_CTL_TXRX_EN));
+
+ /* Set antenna switch tables */
+ ath5k_hw_reg_write(ah, ah->ah_ant_ctl[ee_mode][ant0],
+ AR5K_PHY_ANT_SWITCH_TABLE_0);
+ ath5k_hw_reg_write(ah, ah->ah_ant_ctl[ee_mode][ant1],
+ AR5K_PHY_ANT_SWITCH_TABLE_1);
+}
+
/*
* Set antenna operating mode
*/
@@ -1814,9 +1824,14 @@ ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode)
u8 def_ant, tx_ant, ee_mode;
u32 sta_id1 = 0;
- def_ant = ah->ah_def_ant;
+ /* if channel is not initialized yet we can't set the antennas
+ * so just store the mode. it will be set on the next reset */
+ if (channel == NULL) {
+ ah->ah_ant_mode = ant_mode;
+ return;
+ }
- ATH5K_TRACE(ah->ah_sc);
+ def_ant = ah->ah_def_ant;
switch (channel->hw_value & CHANNEL_MODES) {
case CHANNEL_A:
@@ -1916,6 +1931,7 @@ ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode)
if (sta_id1)
AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1, sta_id1);
+ ath5k_hw_set_antenna_switch(ah, ee_mode);
/* Note: set diversity before default antenna
* because it won't work correctly */
ath5k_hw_set_fast_div(ah, ee_mode, fast_div);
@@ -2981,7 +2997,6 @@ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
u8 type;
int ret;
- ATH5K_TRACE(ah->ah_sc);
if (txpower > AR5K_TUNE_MAX_TXPOWER) {
ATH5K_ERR(ah->ah_sc, "invalid tx power: %u\n", txpower);
return -EINVAL;
@@ -3077,8 +3092,6 @@ int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
struct ieee80211_channel *channel = ah->ah_current_channel;
u8 ee_mode;
- ATH5K_TRACE(ah->ah_sc);
-
switch (channel->hw_value & CHANNEL_MODES) {
case CHANNEL_A:
case CHANNEL_T:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 21:27:18 +0000