* ALGO: coef = (5 * clock / carrier_freq) / 2
* we scale coef by shifting clock value by 24 for
* better precision since we use integers */
- /* TODO: Half/quarter rate */
- clock = (channel->hw_value & CHANNEL_TURBO) ? 80 : 40;
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_40MHZ:
+ clock = 40 * 2;
+ break;
+ case AR5K_BWMODE_10MHZ:
+ clock = 40 / 2;
+ break;
+ case AR5K_BWMODE_5MHZ:
+ clock = 40 / 4;
+ break;
+ default:
+ clock = 40;
+ break;
+ }
coef_scaled = ((5 * (clock << 24)) / 2) / channel->center_freq;
/* Get exponent
/* 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 */
-static int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
+static int ath5k_hw_rfgain_init(struct ath5k_hw *ah, enum ieee80211_band band)
{
const struct ath5k_ini_rfgain *ath5k_rfg;
- unsigned int i, size;
+ unsigned int i, size, index;
switch (ah->ah_radio) {
case AR5K_RF5111:
return -EINVAL;
}
- switch (freq) {
- case AR5K_INI_RFGAIN_2GHZ:
- case AR5K_INI_RFGAIN_5GHZ:
- break;
- default:
- return -EINVAL;
- }
+ index = (band == IEEE80211_BAND_2GHZ) ? 1 : 0;
for (i = 0; i < size; i++) {
AR5K_REG_WAIT(i);
- ath5k_hw_reg_write(ah, ath5k_rfg[i].rfg_value[freq],
+ ath5k_hw_reg_write(ah, ath5k_rfg[i].rfg_value[index],
(u32)ath5k_rfg[i].rfg_register);
}
g_step = &go->go_step[ah->ah_gain.g_step_idx];
+ /* Set turbo mode (N/A on RF5413) */
+ if ((ah->ah_bwmode == AR5K_BWMODE_40MHZ) &&
+ (ah->ah_radio != AR5K_RF5413))
+ ath5k_hw_rfb_op(ah, rf_regs, 1, AR5K_RF_TURBO, false);
+
/* Bank Modifications (chip-specific) */
if (ah->ah_radio == AR5K_RF5111) {
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_xpd[ee_mode],
AR5K_RF_PLO_SEL, true);
- /* TODO: Half/quarter channel support */
+ /* Tweak power detectors for half/quarter rate support */
+ if (ah->ah_bwmode == AR5K_BWMODE_5MHZ ||
+ ah->ah_bwmode == AR5K_BWMODE_10MHZ) {
+ u8 wait_i;
+
+ ath5k_hw_rfb_op(ah, rf_regs, 0x1f,
+ AR5K_RF_WAIT_S, true);
+
+ wait_i = (ah->ah_bwmode == AR5K_BWMODE_5MHZ) ?
+ 0x1f : 0x10;
+
+ ath5k_hw_rfb_op(ah, rf_regs, wait_i,
+ AR5K_RF_WAIT_I, true);
+ ath5k_hw_rfb_op(ah, rf_regs, 3,
+ AR5K_RF_MAX_TIME, true);
+
+ }
}
if (ah->ah_radio == AR5K_RF5112) {
ath5k_hw_rfb_op(ah, rf_regs, ee->ee_i_gain[ee_mode],
AR5K_RF_GAIN_I, true);
- /* TODO: Half/quarter channel support */
+ /* Tweak power detector for half/quarter rates */
+ if (ah->ah_bwmode == AR5K_BWMODE_5MHZ ||
+ ah->ah_bwmode == AR5K_BWMODE_10MHZ) {
+ u8 pd_delay;
+
+ pd_delay = (ah->ah_bwmode == AR5K_BWMODE_5MHZ) ?
+ 0xf : 0x8;
+ ath5k_hw_rfb_op(ah, rf_regs, pd_delay,
+ AR5K_RF_PD_PERIOD_A, true);
+ ath5k_hw_rfb_op(ah, rf_regs, 0xf,
+ AR5K_RF_PD_DELAY_A, true);
+
+ }
}
if (ah->ah_radio == AR5K_RF5413 &&
}
ah->ah_current_channel = channel;
- ath5k_hw_set_clockrate(ah);
return 0;
}
return;
}
- switch (ah->ah_current_channel->hw_value & CHANNEL_MODES) {
- case CHANNEL_A:
- case CHANNEL_T:
- case CHANNEL_XR:
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- case CHANNEL_G:
- case CHANNEL_TG:
- ee_mode = AR5K_EEPROM_MODE_11G;
- break;
- default:
- case CHANNEL_B:
- ee_mode = AR5K_EEPROM_MODE_11B;
- break;
- }
-
+ ee_mode = ath5k_eeprom_mode_from_channel(ah->ah_current_channel);
/* completed NF calibration, test threshold */
nf = ath5k_hw_read_measured_noise_floor(ah);
spur_chan_fbin = AR5K_EEPROM_NO_SPUR;
spur_detection_window = AR5K_SPUR_CHAN_WIDTH;
/* XXX: Half/Quarter channels ?*/
- if (channel->hw_value & CHANNEL_TURBO)
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ)
spur_detection_window *= 2;
for (i = 0; i < AR5K_EEPROM_N_SPUR_CHANS; i++) {
* Calculate deltas:
* spur_freq_sigma_delta -> spur_offset / sample_freq << 21
* spur_delta_phase -> spur_offset / chip_freq << 11
- * Note: Both values have 100KHz resolution
+ * Note: Both values have 100Hz resolution
*/
- /* XXX: Half/Quarter rate channels ? */
- switch (channel->hw_value) {
- case CHANNEL_A:
- /* Both sample_freq and chip_freq are 40MHz */
- spur_delta_phase = (spur_offset << 17) / 25;
- spur_freq_sigma_delta = (spur_delta_phase >> 10);
- symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz;
- break;
- case CHANNEL_G:
- /* sample_freq -> 40MHz chip_freq -> 44MHz
- * (for b compatibility) */
- spur_freq_sigma_delta = (spur_offset << 8) / 55;
- spur_delta_phase = (spur_offset << 17) / 25;
- symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz;
- break;
- case CHANNEL_T:
- case CHANNEL_TG:
+ switch (ah->ah_bwmode) {
+ case AR5K_BWMODE_40MHZ:
/* Both sample_freq and chip_freq are 80MHz */
spur_delta_phase = (spur_offset << 16) / 25;
spur_freq_sigma_delta = (spur_delta_phase >> 10);
- symbol_width = AR5K_SPUR_SYMBOL_WIDTH_TURBO_100Hz;
+ symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz * 2;
break;
+ case AR5K_BWMODE_10MHZ:
+ /* Both sample_freq and chip_freq are 20MHz (?) */
+ spur_delta_phase = (spur_offset << 18) / 25;
+ spur_freq_sigma_delta = (spur_delta_phase >> 10);
+ symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 2;
+ case AR5K_BWMODE_5MHZ:
+ /* Both sample_freq and chip_freq are 10MHz (?) */
+ spur_delta_phase = (spur_offset << 19) / 25;
+ spur_freq_sigma_delta = (spur_delta_phase >> 10);
+ symbol_width = AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz / 4;
default:
- return;
+ if (channel->hw_value == CHANNEL_A) {
+ /* Both sample_freq and chip_freq are 40MHz */
+ spur_delta_phase = (spur_offset << 17) / 25;
+ spur_freq_sigma_delta =
+ (spur_delta_phase >> 10);
+ symbol_width =
+ AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz;
+ } else {
+ /* sample_freq -> 40MHz chip_freq -> 44MHz
+ * (for b compatibility) */
+ spur_delta_phase = (spur_offset << 17) / 25;
+ spur_freq_sigma_delta =
+ (spur_offset << 8) / 55;
+ symbol_width =
+ AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz;
+ }
+ break;
}
/* Calculate pilot and magnitude masks */
struct ieee80211_channel *channel = ah->ah_current_channel;
bool use_def_for_tx, update_def_on_tx, use_def_for_rts, fast_div;
bool use_def_for_sg;
- u8 def_ant, tx_ant, ee_mode;
+ int ee_mode;
+ u8 def_ant, tx_ant;
u32 sta_id1 = 0;
/* if channel is not initialized yet we can't set the antennas
def_ant = ah->ah_def_ant;
- switch (channel->hw_value & CHANNEL_MODES) {
- case CHANNEL_A:
- case CHANNEL_T:
- case CHANNEL_XR:
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- case CHANNEL_G:
- case CHANNEL_TG:
- ee_mode = AR5K_EEPROM_MODE_11G;
- break;
- case CHANNEL_B:
- ee_mode = AR5K_EEPROM_MODE_11B;
- break;
- default:
+ ee_mode = ath5k_eeprom_mode_from_channel(channel);
+ if (ee_mode < 0) {
ATH5K_ERR(ah->ah_sc,
"invalid channel: %d\n", channel->center_freq);
return;
switch (channel->hw_value & CHANNEL_MODES) {
case CHANNEL_A:
- ctl_mode |= AR5K_CTL_11A;
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ)
+ ctl_mode |= AR5K_CTL_TURBO;
+ else
+ ctl_mode |= AR5K_CTL_11A;
break;
case CHANNEL_G:
- ctl_mode |= AR5K_CTL_11G;
+ if (ah->ah_bwmode == AR5K_BWMODE_40MHZ)
+ ctl_mode |= AR5K_CTL_TURBOG;
+ else
+ ctl_mode |= AR5K_CTL_11G;
break;
case CHANNEL_B:
ctl_mode |= AR5K_CTL_11B;
break;
- case CHANNEL_T:
- ctl_mode |= AR5K_CTL_TURBO;
- break;
- case CHANNEL_TG:
- ctl_mode |= AR5K_CTL_TURBOG;
- break;
case CHANNEL_XR:
/* Fall through */
default:
/* Write PCDAC values on hw */
static void
-ath5k_setup_pcdac_table(struct ath5k_hw *ah)
+ath5k_write_pcdac_table(struct ath5k_hw *ah)
{
u8 *pcdac_out = ah->ah_txpower.txp_pd_table;
int i;
/* Write PDADC values on hw */
static void
-ath5k_setup_pwr_to_pdadc_table(struct ath5k_hw *ah,
- u8 pdcurves, u8 *pdg_to_idx)
+ath5k_write_pwr_to_pdadc_table(struct ath5k_hw *ah, u8 ee_mode)
{
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
u8 *pdadc_out = ah->ah_txpower.txp_pd_table;
+ u8 *pdg_to_idx = ee->ee_pdc_to_idx[ee_mode];
+ u8 pdcurves = ee->ee_pd_gains[ee_mode];
u32 reg;
u8 i;
(s16) pcinfo_R->freq,
pcinfo_L->max_pwr, pcinfo_R->max_pwr);
- /* We are ready to go, fill PCDAC/PDADC
- * table and write settings on hardware */
+ /* Fill PCDAC/PDADC table */
switch (type) {
case AR5K_PWRTABLE_LINEAR_PCDAC:
/* For RF5112 we can have one or two curves
* match max power value with max
* table index */
ah->ah_txpower.txp_offset = 64 - (table_max[0] / 2);
-
- /* Write settings on hw */
- ath5k_setup_pcdac_table(ah);
break;
case AR5K_PWRTABLE_PWR_TO_PCDAC:
/* We are done for RF5111 since it has only
/* No rate powertable adjustment for RF5111 */
ah->ah_txpower.txp_min_idx = 0;
ah->ah_txpower.txp_offset = 0;
-
- /* Write settings on hw */
- ath5k_setup_pcdac_table(ah);
break;
case AR5K_PWRTABLE_PWR_TO_PDADC:
/* Set PDADC boundaries and fill
ath5k_combine_pwr_to_pdadc_curves(ah, table_min, table_max,
ee->ee_pd_gains[ee_mode]);
- /* Write settings on hw */
- ath5k_setup_pwr_to_pdadc_table(ah, pdg, pdg_curve_to_idx);
-
/* Set txp.offset, note that table_min
* can be negative */
ah->ah_txpower.txp_offset = table_min[0];
return -EINVAL;
}
+ ah->ah_txpower.txp_setup = true;
+
return 0;
}
+/* Write power table for current channel to hw */
+static void
+ath5k_write_channel_powertable(struct ath5k_hw *ah, u8 ee_mode, u8 type)
+{
+ if (type == AR5K_PWRTABLE_PWR_TO_PDADC)
+ ath5k_write_pwr_to_pdadc_table(ah, ee_mode);
+ else
+ ath5k_write_pcdac_table(ah);
+}
/*
* Per-rate tx power setting
/* Min/max in 0.25dB units */
ah->ah_txpower.txp_min_pwr = 2 * rates[7];
- ah->ah_txpower.txp_max_pwr = 2 * rates[0];
+ ah->ah_txpower.txp_cur_pwr = 2 * rates[0];
ah->ah_txpower.txp_ofdm = rates[7];
}
*/
static int
ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
- u8 ee_mode, u8 txpower)
+ u8 txpower)
{
struct ath5k_rate_pcal_info rate_info;
+ struct ieee80211_channel *curr_channel = ah->ah_current_channel;
+ int ee_mode;
u8 type;
int ret;
return -EINVAL;
}
- /* Reset TX power values */
- memset(&ah->ah_txpower, 0, sizeof(ah->ah_txpower));
- ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
- ah->ah_txpower.txp_min_pwr = 0;
- ah->ah_txpower.txp_max_pwr = AR5K_TUNE_MAX_TXPOWER;
+ ee_mode = ath5k_eeprom_mode_from_channel(channel);
+ if (ee_mode < 0) {
+ ATH5K_ERR(ah->ah_sc,
+ "invalid channel: %d\n", channel->center_freq);
+ return -EINVAL;
+ }
/* Initialize TX power table */
switch (ah->ah_radio) {
+ case AR5K_RF5110:
+ /* TODO */
+ return 0;
case AR5K_RF5111:
type = AR5K_PWRTABLE_PWR_TO_PCDAC;
break;
return -EINVAL;
}
- /* FIXME: Only on channel/mode change */
- ret = ath5k_setup_channel_powertable(ah, channel, ee_mode, type);
- if (ret)
- return ret;
+ /*
+ * If we don't change channel/mode skip tx powertable calculation
+ * and use the cached one.
+ */
+ if (!ah->ah_txpower.txp_setup ||
+ (channel->hw_value != curr_channel->hw_value) ||
+ (channel->center_freq != curr_channel->center_freq)) {
+ /* Reset TX power values */
+ memset(&ah->ah_txpower, 0, sizeof(ah->ah_txpower));
+ ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
+
+ /* Calculate the powertable */
+ ret = ath5k_setup_channel_powertable(ah, channel,
+ ee_mode, type);
+ if (ret)
+ return ret;
+ }
+
+ /* Write table on hw */
+ ath5k_write_channel_powertable(ah, ee_mode, type);
/* Limit max power if we have a CTL available */
ath5k_get_max_ctl_power(ah, channel);
int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
{
- /*Just a try M.F.*/
- struct ieee80211_channel *channel = ah->ah_current_channel;
- u8 ee_mode;
-
- switch (channel->hw_value & CHANNEL_MODES) {
- case CHANNEL_A:
- case CHANNEL_T:
- case CHANNEL_XR:
- ee_mode = AR5K_EEPROM_MODE_11A;
- break;
- case CHANNEL_G:
- case CHANNEL_TG:
- ee_mode = AR5K_EEPROM_MODE_11G;
- break;
- case CHANNEL_B:
- ee_mode = AR5K_EEPROM_MODE_11B;
- break;
- default:
- ATH5K_ERR(ah->ah_sc,
- "invalid channel: %d\n", channel->center_freq);
- return -EINVAL;
- }
-
ATH5K_DBG(ah->ah_sc, ATH5K_DEBUG_TXPOWER,
"changing txpower to %d\n", txpower);
- return ath5k_hw_txpower(ah, channel, ee_mode, txpower);
+ return ath5k_hw_txpower(ah, ah->ah_current_channel, txpower);
}
/*************\
\*************/
int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
- u8 mode, u8 ee_mode, u8 freq)
+ u8 mode, bool fast)
{
+ struct ieee80211_channel *curr_channel;
int ret, i;
u32 phy_tst1;
-
ret = 0;
/*
- * 5211/5212 Specific
+ * Sanity check for fast flag
+ * Don't try fast channel change when changing modulation
+ * mode/band. We check for chip compatibility on
+ * ath5k_hw_reset.
*/
- if (ah->ah_version != AR5K_AR5210) {
+ curr_channel = ah->ah_current_channel;
+ if (fast && (channel->hw_value != curr_channel->hw_value))
+ return -EINVAL;
+
+ /*
+ * On fast channel change we only set the synth parameters
+ * while PHY is running, enable calibration and skip the rest.
+ */
+ if (fast) {
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_RFBUS_REQ,
+ AR5K_PHY_RFBUS_REQ_REQUEST);
+ for (i = 0; i < 100; i++) {
+ if (ath5k_hw_reg_read(ah, AR5K_PHY_RFBUS_GRANT))
+ break;
+ udelay(5);
+ }
+ /* Failed */
+ if (i >= 100)
+ return -EIO;
+ }
+
+ /*
+ * Set TX power
+ *
+ * Note: We need to do that before we set
+ * RF buffer settings on 5211/5212+ so that we
+ * properly set curve indices.
+ */
+ ret = ath5k_hw_txpower(ah, channel, ah->ah_txpower.txp_cur_pwr ?
+ ah->ah_txpower.txp_cur_pwr / 2 : AR5K_TUNE_MAX_TXPOWER);
+ if (ret)
+ return ret;
+
+ /*
+ * For 5210 we do all initialization using
+ * initvals, so we don't have to modify
+ * any settings (5210 also only supports
+ * a/aturbo modes)
+ */
+ if ((ah->ah_version != AR5K_AR5210) && !fast) {
/*
* Write initial RF gain settings
* This should work for both 5111/5112
*/
- ret = ath5k_hw_rfgain_init(ah, freq);
+ ret = ath5k_hw_rfgain_init(ah, channel->band);
if (ret)
return ret;
mdelay(1);
- /*
- * Set TX power
- */
- ret = ath5k_hw_txpower(ah, channel, ee_mode,
- ah->ah_txpower.txp_max_pwr / 2);
- if (ret)
- return ret;
-
/*
* Write RF buffer
*/
if (ret)
return ret;
-
/* Write OFDM timings on 5212*/
if (ah->ah_version == AR5K_AR5212 &&
channel->hw_value & CHANNEL_OFDM) {
AR5K_TXCFG_B_MODE);
}
- } else {
- /*
- * For 5210 we do all initialization using
- * initvals, so we don't have to modify
- * any settings (5210 also only supports
- * a/aturbo modes)
- */
+ } else if (ah->ah_version == AR5K_AR5210) {
mdelay(1);
/* Disable phy and wait */
ath5k_hw_reg_write(ah, AR5K_PHY_ACT_DISABLE, AR5K_PHY_ACT);
/*
* On 5211+ read activation -> rx delay
* and use it.
- *
- * TODO: Half/quarter rate support
*/
if (ah->ah_version != AR5K_AR5210) {
u32 delay;
AR5K_PHY_RX_DELAY_M;
delay = (channel->hw_value & CHANNEL_CCK) ?
((delay << 2) / 22) : (delay / 10);
-
- udelay(100 + (2 * delay));
+ if (ah->ah_bwmode == AR5K_BWMODE_10MHZ)
+ delay = delay << 1;
+ if (ah->ah_bwmode == AR5K_BWMODE_5MHZ)
+ delay = delay << 2;
+ /* XXX: /2 on turbo ? Let's be safe
+ * for now */
+ udelay(100 + delay);
} else {
mdelay(1);
}
- /*
- * Perform ADC test to see if baseband is ready
- * Set TX hold and check ADC test register
- */
- phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
- ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
- for (i = 0; i <= 20; i++) {
- if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
- break;
- udelay(200);
+ if (fast)
+ /*
+ * Release RF Bus grant
+ */
+ AR5K_REG_DISABLE_BITS(ah, AR5K_PHY_RFBUS_REQ,
+ AR5K_PHY_RFBUS_REQ_REQUEST);
+ else {
+ /*
+ * Perform ADC test to see if baseband is ready
+ * Set tx hold and check adc test register
+ */
+ phy_tst1 = ath5k_hw_reg_read(ah, AR5K_PHY_TST1);
+ ath5k_hw_reg_write(ah, AR5K_PHY_TST1_TXHOLD, AR5K_PHY_TST1);
+ for (i = 0; i <= 20; i++) {
+ if (!(ath5k_hw_reg_read(ah, AR5K_PHY_ADC_TEST) & 0x10))
+ break;
+ udelay(200);
+ }
+ ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
}
- ath5k_hw_reg_write(ah, phy_tst1, AR5K_PHY_TST1);
/*
* Start automatic gain control calibration
projects / cascardo / linux.git / blobdiff