{ AR5K_RF_GAIN(63), { 0x000000f9 } },
};
+/* Initial RF Gain settings for RF2425 */
+static const struct ath5k_ini_rfgain rfgain_2425[] = {
+ { AR5K_RF_GAIN(0), { 0x00000000 } },
+ { AR5K_RF_GAIN(1), { 0x00000040 } },
+ { AR5K_RF_GAIN(2), { 0x00000080 } },
+ { AR5K_RF_GAIN(3), { 0x00000181 } },
+ { AR5K_RF_GAIN(4), { 0x000001c1 } },
+ { AR5K_RF_GAIN(5), { 0x00000001 } },
+ { AR5K_RF_GAIN(6), { 0x00000041 } },
+ { AR5K_RF_GAIN(7), { 0x00000081 } },
+ { AR5K_RF_GAIN(8), { 0x00000188 } },
+ { AR5K_RF_GAIN(9), { 0x000001c8 } },
+ { AR5K_RF_GAIN(10), { 0x00000008 } },
+ { AR5K_RF_GAIN(11), { 0x00000048 } },
+ { AR5K_RF_GAIN(12), { 0x00000088 } },
+ { AR5K_RF_GAIN(13), { 0x00000189 } },
+ { AR5K_RF_GAIN(14), { 0x000001c9 } },
+ { AR5K_RF_GAIN(15), { 0x00000009 } },
+ { AR5K_RF_GAIN(16), { 0x00000049 } },
+ { AR5K_RF_GAIN(17), { 0x00000089 } },
+ { AR5K_RF_GAIN(18), { 0x000001b0 } },
+ { AR5K_RF_GAIN(19), { 0x000001f0 } },
+ { AR5K_RF_GAIN(20), { 0x00000030 } },
+ { AR5K_RF_GAIN(21), { 0x00000070 } },
+ { AR5K_RF_GAIN(22), { 0x00000171 } },
+ { AR5K_RF_GAIN(23), { 0x000001b1 } },
+ { AR5K_RF_GAIN(24), { 0x000001f1 } },
+ { AR5K_RF_GAIN(25), { 0x00000031 } },
+ { AR5K_RF_GAIN(26), { 0x00000071 } },
+ { AR5K_RF_GAIN(27), { 0x000001b8 } },
+ { AR5K_RF_GAIN(28), { 0x000001f8 } },
+ { AR5K_RF_GAIN(29), { 0x00000038 } },
+ { AR5K_RF_GAIN(30), { 0x00000078 } },
+ { AR5K_RF_GAIN(31), { 0x000000b8 } },
+ { AR5K_RF_GAIN(32), { 0x000001b9 } },
+ { AR5K_RF_GAIN(33), { 0x000001f9 } },
+ { AR5K_RF_GAIN(34), { 0x00000039 } },
+ { AR5K_RF_GAIN(35), { 0x00000079 } },
+ { AR5K_RF_GAIN(36), { 0x000000b9 } },
+ { AR5K_RF_GAIN(37), { 0x000000f9 } },
+ { AR5K_RF_GAIN(38), { 0x000000f9 } },
+ { AR5K_RF_GAIN(39), { 0x000000f9 } },
+ { AR5K_RF_GAIN(40), { 0x000000f9 } },
+ { AR5K_RF_GAIN(41), { 0x000000f9 } },
+ { AR5K_RF_GAIN(42), { 0x000000f9 } },
+ { AR5K_RF_GAIN(43), { 0x000000f9 } },
+ { AR5K_RF_GAIN(44), { 0x000000f9 } },
+ { AR5K_RF_GAIN(45), { 0x000000f9 } },
+ { AR5K_RF_GAIN(46), { 0x000000f9 } },
+ { AR5K_RF_GAIN(47), { 0x000000f9 } },
+ { AR5K_RF_GAIN(48), { 0x000000f9 } },
+ { AR5K_RF_GAIN(49), { 0x000000f9 } },
+ { AR5K_RF_GAIN(50), { 0x000000f9 } },
+ { AR5K_RF_GAIN(51), { 0x000000f9 } },
+ { AR5K_RF_GAIN(52), { 0x000000f9 } },
+ { AR5K_RF_GAIN(53), { 0x000000f9 } },
+ { AR5K_RF_GAIN(54), { 0x000000f9 } },
+ { AR5K_RF_GAIN(55), { 0x000000f9 } },
+ { AR5K_RF_GAIN(56), { 0x000000f9 } },
+ { AR5K_RF_GAIN(57), { 0x000000f9 } },
+ { AR5K_RF_GAIN(58), { 0x000000f9 } },
+ { AR5K_RF_GAIN(59), { 0x000000f9 } },
+ { AR5K_RF_GAIN(60), { 0x000000f9 } },
+ { AR5K_RF_GAIN(61), { 0x000000f9 } },
+ { AR5K_RF_GAIN(62), { 0x000000f9 } },
+ { AR5K_RF_GAIN(63), { 0x000000f9 } },
+};
+
static const struct ath5k_gain_opt rfgain_opt_5112 = {
1,
8,
freq = 0; /* only 2Ghz */
break;
case AR5K_RF2425:
- ath5k_rfg = rfgain_2413;
- size = ARRAY_SIZE(rfgain_2413);
+ ath5k_rfg = rfgain_2425;
+ size = ARRAY_SIZE(rfgain_2425);
freq = 0; /* only 2Ghz */
break;
default:
data = data0 = data1 = data2 = 0;
c = channel->center_freq;
- /*
- * Set the channel on the RF5112 or newer
- */
if (c < 4800) {
if (!((c - 2224) % 5)) {
data0 = ((2 * (c - 704)) - 3040) / 10;
return -EINVAL;
data0 = ath5k_hw_bitswap((data0 << 2) & 0xff, 8);
- } else {
+ } else if ((c - (c % 5)) != 2 || c > 5435) {
if (!(c % 20) && c >= 5120) {
data0 = ath5k_hw_bitswap(((c - 4800) / 20 << 2), 8);
data2 = ath5k_hw_bitswap(3, 2);
data2 = ath5k_hw_bitswap(1, 2);
} else
return -EINVAL;
+ } else {
+ data0 = ath5k_hw_bitswap((10 * (c - 2) - 4800) / 25 + 1, 8);
+ data2 = ath5k_hw_bitswap(0, 2);
}
data = (data0 << 4) | (data1 << 1) | (data2 << 2) | 0x1001;
return 0;
}
+/*
+ * Set the channel on the RF2425
+ */
+static int ath5k_hw_rf2425_channel(struct ath5k_hw *ah,
+ struct ieee80211_channel *channel)
+{
+ u32 data, data0, data2;
+ u16 c;
+
+ data = data0 = data2 = 0;
+ c = channel->center_freq;
+
+ if (c < 4800) {
+ data0 = ath5k_hw_bitswap((c - 2272), 8);
+ data2 = 0;
+ /* ? 5GHz ? */
+ } else if ((c - (c % 5)) != 2 || c > 5435) {
+ if (!(c % 20) && c < 5120)
+ data0 = ath5k_hw_bitswap(((c - 4800) / 20 << 2), 8);
+ else if (!(c % 10))
+ data0 = ath5k_hw_bitswap(((c - 4800) / 10 << 1), 8);
+ else if (!(c % 5))
+ data0 = ath5k_hw_bitswap((c - 4800) / 5, 8);
+ else
+ return -EINVAL;
+ data2 = ath5k_hw_bitswap(1, 2);
+ } else {
+ data0 = ath5k_hw_bitswap((10 * (c - 2) - 4800) / 25 + 1, 8);
+ data2 = ath5k_hw_bitswap(0, 2);
+ }
+
+ data = (data0 << 4) | data2 << 2 | 0x1001;
+
+ ath5k_hw_reg_write(ah, data & 0xff, AR5K_RF_BUFFER);
+ ath5k_hw_reg_write(ah, (data >> 8) & 0x7f, AR5K_RF_BUFFER_CONTROL_5);
+
+ return 0;
+}
+
/*
* Set a channel on the radio chip
*/
case AR5K_RF5111:
ret = ath5k_hw_rf5111_channel(ah, channel);
break;
+ case AR5K_RF2425:
+ ret = ath5k_hw_rf2425_channel(ah, channel);
+ break;
default:
ret = ath5k_hw_rf5112_channel(ah, channel);
break;
if (ret)
return ret;
+ /* Set JAPAN setting for channel 14 */
+ if (channel->center_freq == 2484) {
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_CCKTXCTL,
+ AR5K_PHY_CCKTXCTL_JAPAN);
+ } else {
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_CCKTXCTL,
+ AR5K_PHY_CCKTXCTL_WORLD);
+ }
+
ah->ah_current_channel.center_freq = channel->center_freq;
ah->ah_current_channel.hw_value = channel->hw_value;
ah->ah_turbo = channel->hw_value == CHANNEL_T ? true : false;
* http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL \
* &p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7245893.PN.&OS=PN/7
*
+ * XXX: Since during noise floor calibration antennas are detached according to
+ * the patent, we should stop tx queues here.
*/
int
ath5k_hw_noise_floor_calibration(struct ath5k_hw *ah, short freq)
s32 noise_floor;
/*
- * Enable noise floor calibration and wait until completion
+ * Enable noise floor calibration
*/
AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_AGCCTL,
AR5K_PHY_AGCCTL_NF);
if (ret) {
ATH5K_ERR(ah->ah_sc,
"noise floor calibration timeout (%uMHz)\n", freq);
- return ret;
+ return -EAGAIN;
}
/* Wait until the noise floor is calibrated and read the value */
if (noise_floor > AR5K_TUNE_NOISE_FLOOR) {
ATH5K_ERR(ah->ah_sc,
"noise floor calibration failed (%uMHz)\n", freq);
- return -EIO;
+ return -EAGAIN;
}
ah->ah_noise_floor = noise_floor;
}
/*
- * Perform a PHY calibration on RF5111/5112
+ * Perform a PHY calibration on RF5111/5112 and newer chips
*/
static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
struct ieee80211_channel *channel)
{
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)
+ ath5k_hw_reg_read(ah, AR5K_PHY_IQ) & AR5K_PHY_IQ_RUN)
goto done;
- ah->ah_calibration = false;
+ /* Calibration has finished, get the results and re-run */
+ for (i = 0; i <= 10; i++) {
+ iq_corr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_CORR);
+ i_pwr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_PWR_I);
+ q_pwr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_PWR_Q);
+ }
- iq_corr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_CORR);
- i_pwr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_PWR_I);
- q_pwr = ath5k_hw_reg_read(ah, AR5K_PHY_IQRES_CAL_PWR_Q);
i_coffd = ((i_pwr >> 1) + (q_pwr >> 1)) >> 7;
- q_coffd = q_pwr >> 6;
+ q_coffd = q_pwr >> 7;
+ /* No correction */
if (i_coffd == 0 || q_coffd == 0)
goto done;
i_coff = ((-iq_corr) / i_coffd) & 0x3f;
- q_coff = (((s32)i_pwr / q_coffd) - 64) & 0x1f;
- /* Commit new IQ value */
+ /* Boundary check */
+ if (i_coff > 31)
+ i_coff = 31;
+ if (i_coff < -32)
+ i_coff = -32;
+
+ q_coff = (((s32)i_pwr / q_coffd) - 128) & 0x1f;
+
+ /* Boundary check */
+ if (q_coff > 15)
+ q_coff = 15;
+ if (q_coff < -16)
+ q_coff = -16;
+
+ /* Commit new I/Q value */
AR5K_REG_ENABLE_BITS(ah, AR5K_PHY_IQ, AR5K_PHY_IQ_CORR_ENABLE |
((u32)q_coff) | ((u32)i_coff << AR5K_PHY_IQ_CORR_Q_I_COFF_S));
+ /* Re-enable calibration -if we don't we'll commit
+ * the same values again and again */
+ AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ,
+ 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_noise_floor_calibration(ah, channel->center_freq);
/* Request RF gain */
projects / linux-2.6 / blobdiff