summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ath5k/phy.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/phy.c')
-rw-r--r--drivers/net/wireless/ath/ath5k/phy.c106
1 files changed, 55 insertions, 51 deletions
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 492cbb15720d..219367884e64 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -115,7 +115,7 @@ static unsigned int ath5k_hw_rfb_op(struct ath5k_hw *ah,
\**********************/
/*
- * This code is used to optimize rf gain on different environments
+ * This code is used to optimize RF gain on different environments
* (temperature mostly) based on feedback from a power detector.
*
* It's only used on RF5111 and RF5112, later RF chips seem to have
@@ -302,7 +302,7 @@ static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
}
/* Perform gain_F adjustment by choosing the right set
- * of parameters from rf gain optimization ladder */
+ * of parameters from RF gain optimization ladder */
static s8 ath5k_hw_rf_gainf_adjust(struct ath5k_hw *ah)
{
const struct ath5k_gain_opt *go;
@@ -367,7 +367,7 @@ done:
return ret;
}
-/* Main callback for thermal rf gain calibration engine
+/* Main callback for thermal RF gain calibration engine
* Check for a new gain reading and schedule an adjustment
* if needed.
*
@@ -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;
@@ -435,7 +433,7 @@ done:
return ah->ah_gain.g_state;
}
-/* Write initial rf gain table to set the RF sensitivity
+/* Write initial RF gain table to set the RF sensitivity
* this one works on all RF chips and has nothing to do
* with gain_F calibration */
int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
@@ -498,7 +496,7 @@ int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
/*
- * Setup RF registers by writing rf buffer on hw
+ * Setup RF registers by writing RF buffer on hw
*/
int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
unsigned int mode)
@@ -573,7 +571,7 @@ int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
return -EINVAL;
}
- /* If it's the first time we set rf buffer, allocate
+ /* If it's the first time we set RF buffer, allocate
* ah->ah_rf_banks based on ah->ah_rf_banks_size
* we set above */
if (ah->ah_rf_banks == NULL) {
@@ -1095,6 +1093,7 @@ int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *channel)
ah->ah_current_channel = channel;
ah->ah_turbo = channel->hw_value == CHANNEL_T ? true : false;
+ ath5k_hw_set_clockrate(ah);
return 0;
}
@@ -1167,7 +1166,7 @@ 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 +1247,6 @@ 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)
@@ -1260,7 +1258,7 @@ static int ath5k_hw_rf5110_calibrate(struct ath5k_hw *ah,
* Disable beacons and RX/TX queues, wait
*/
AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5210,
- AR5K_DIAG_SW_DIS_TX | AR5K_DIAG_SW_DIS_RX_5210);
+ AR5K_DIAG_SW_DIS_TX_5210 | AR5K_DIAG_SW_DIS_RX_5210);
beacon = ath5k_hw_reg_read(ah, AR5K_BEACON_5210);
ath5k_hw_reg_write(ah, beacon & ~AR5K_BEACON_ENABLE, AR5K_BEACON_5210);
@@ -1335,35 +1333,31 @@ static int ath5k_hw_rf5110_calibrate(struct ath5k_hw *ah,
return ret;
}
- ath5k_hw_update_noise_floor(ah);
-
/*
* Re-enable RX/TX and beacons
*/
AR5K_REG_DISABLE_BITS(ah, AR5K_DIAG_SW_5210,
- AR5K_DIAG_SW_DIS_TX | AR5K_DIAG_SW_DIS_RX_5210);
+ AR5K_DIAG_SW_DIS_TX_5210 | AR5K_DIAG_SW_DIS_RX_5210);
ath5k_hw_reg_write(ah, beacon, AR5K_BEACON_5210);
return 0;
}
/*
- * 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 +1378,7 @@ 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 0;
i_coff = (-iq_corr) / i_coffd;
i_coff = clamp(i_coff, -32, 31); /* signed 6 bit */
@@ -1410,17 +1404,6 @@ 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 +1417,10 @@ 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;
}
@@ -1598,7 +1583,7 @@ ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw *ah,
else if (curr_sym_off >= 31 && curr_sym_off <= 46)
mag_mask[2] |=
plt_mag_map << (curr_sym_off - 31) * 2;
- else if (curr_sym_off >= 46 && curr_sym_off <= 53)
+ else if (curr_sym_off >= 47 && curr_sym_off <= 53)
mag_mask[3] |=
plt_mag_map << (curr_sym_off - 47) * 2;
@@ -1693,7 +1678,6 @@ 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 +1693,6 @@ 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 +1737,6 @@ 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 +1769,50 @@ 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, 4);
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
*/
@@ -1823,8 +1834,6 @@ ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode)
def_ant = ah->ah_def_ant;
- ATH5K_TRACE(ah->ah_sc);
-
switch (channel->hw_value & CHANNEL_MODES) {
case CHANNEL_A:
case CHANNEL_T:
@@ -1923,6 +1932,7 @@ 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);
@@ -2978,7 +2988,7 @@ ath5k_setup_rate_powertable(struct ath5k_hw *ah, u16 max_pwr,
/*
- * Set transmition power
+ * Set transmission power
*/
int
ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
@@ -2988,7 +2998,6 @@ 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;
@@ -3027,9 +3036,6 @@ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
/* Limit max power if we have a CTL available */
ath5k_get_max_ctl_power(ah, channel);
- /* FIXME: Tx power limit for this regdomain
- * XXX: Mac80211/CRDA will do that anyway ? */
-
/* FIXME: Antenna reduction stuff */
/* FIXME: Limit power on turbo modes */
@@ -3084,8 +3090,6 @@ 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 v1.2.3-55-g7522 (git 2.39.0) at 2024-06-03 14:22:51 +0200