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authorFelix Fietkau <nbd@openwrt.org>2012-08-06 22:11:30 +0000
committerFelix Fietkau <nbd@openwrt.org>2012-08-06 22:11:30 +0000
commita55de42c7d911dae01c9a31b15e70f550e81df49 (patch)
treeba169773ca1dad4cc649dadaf53c4322f1d4fb6d /package/mac80211
parent74c27a1a9281c6fdc9a3987c8a8629654f0f2914 (diff)
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ath9k: extend and enable PA predistortion
SVN-Revision: 33031
Diffstat (limited to 'package/mac80211')
-rw-r--r--package/mac80211/patches/570-ath9k_paprd_hornet_mask.patch25
-rw-r--r--package/mac80211/patches/571-ath9k_paprd_retrain_pa_in.patch153
-rw-r--r--package/mac80211/patches/572-ath9k_enable_paprd.patch12
3 files changed, 190 insertions, 0 deletions
diff --git a/package/mac80211/patches/570-ath9k_paprd_hornet_mask.patch b/package/mac80211/patches/570-ath9k_paprd_hornet_mask.patch
new file mode 100644
index 0000000..90e3ef2
--- /dev/null
+++ b/package/mac80211/patches/570-ath9k_paprd_hornet_mask.patch
@@ -0,0 +1,25 @@
+--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+@@ -142,6 +142,7 @@ static int ar9003_paprd_setup_single_tab
+ };
+ int training_power;
+ int i, val;
++ u32 am2pm_mask = ah->paprd_ratemask;
+
+ if (IS_CHAN_2GHZ(ah->curchan))
+ training_power = ar9003_get_training_power_2g(ah);
+@@ -158,10 +159,13 @@ static int ar9003_paprd_setup_single_tab
+ }
+ ah->paprd_training_power = training_power;
+
++ if (AR_SREV_9330(ah))
++ am2pm_mask = 0;
++
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK,
+ ah->paprd_ratemask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK,
+- ah->paprd_ratemask);
++ am2pm_mask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK,
+ ah->paprd_ratemask_ht40);
+
diff --git a/package/mac80211/patches/571-ath9k_paprd_retrain_pa_in.patch b/package/mac80211/patches/571-ath9k_paprd_retrain_pa_in.patch
new file mode 100644
index 0000000..4a366e3
--- /dev/null
+++ b/package/mac80211/patches/571-ath9k_paprd_retrain_pa_in.patch
@@ -0,0 +1,153 @@
+--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+@@ -786,6 +786,102 @@ int ar9003_paprd_setup_gain_table(struct
+ }
+ EXPORT_SYMBOL(ar9003_paprd_setup_gain_table);
+
++static bool ar9003_paprd_retrain_pa_in(struct ath_hw *ah,
++ struct ath9k_hw_cal_data *caldata,
++ int chain)
++{
++ u32 *pa_in = caldata->pa_table[chain];
++ int capdiv_offset, quick_drop_offset;
++ int capdiv2g, quick_drop;
++ int count = 0;
++ int i;
++
++ if (!AR_SREV_9485(ah) && !AR_SREV_9330(ah))
++ return false;
++
++ capdiv2g = REG_READ_FIELD(ah, AR_PHY_65NM_CH0_TXRF3,
++ AR_PHY_65NM_CH0_TXRF3_CAPDIV2G);
++
++ quick_drop = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
++ AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP);
++
++ if (quick_drop)
++ quick_drop -= 0x40;
++
++ for (i = 0; i < NUM_BIN + 1; i++) {
++ if (pa_in[i] == 1400)
++ count++;
++ }
++
++ if (AR_SREV_9485(ah)) {
++ if (pa_in[23] < 800) {
++ capdiv_offset = (int)((1000 - pa_in[23] + 75) / 150);
++ capdiv2g += capdiv_offset;
++ if (capdiv2g > 7) {
++ capdiv2g = 7;
++ if (pa_in[23] < 600) {
++ quick_drop++;
++ if (quick_drop > 0)
++ quick_drop = 0;
++ }
++ }
++ } else if (pa_in[23] == 1400) {
++ quick_drop_offset = min_t(int, count / 3, 2);
++ quick_drop += quick_drop_offset;
++ capdiv2g += quick_drop_offset / 2;
++
++ if (capdiv2g > 7)
++ capdiv2g = 7;
++
++ if (quick_drop > 0) {
++ quick_drop = 0;
++ capdiv2g -= quick_drop_offset;
++ if (capdiv2g < 0)
++ capdiv2g = 0;
++ }
++ } else {
++ return false;
++ }
++ } else if (AR_SREV_9330(ah)) {
++ if (pa_in[23] < 1000) {
++ capdiv_offset = (1000 - pa_in[23]) / 100;
++ capdiv2g += capdiv_offset;
++ if (capdiv_offset > 3) {
++ capdiv_offset = 1;
++ quick_drop--;
++ }
++
++ capdiv2g += capdiv_offset;
++ if (capdiv2g > 6)
++ capdiv2g = 6;
++ if (quick_drop < -4)
++ quick_drop = -4;
++ } else if (pa_in[23] == 1400) {
++ if (count > 3) {
++ quick_drop++;
++ capdiv2g -= count / 4;
++ if (quick_drop > -2)
++ quick_drop = -2;
++ } else {
++ capdiv2g--;
++ }
++
++ if (capdiv2g < 0)
++ capdiv2g = 0;
++ } else {
++ return false;
++ }
++ }
++
++ REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_TXRF3,
++ AR_PHY_65NM_CH0_TXRF3_CAPDIV2G, capdiv2g);
++ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
++ AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP,
++ quick_drop);
++
++ return true;
++}
++
+ int ar9003_paprd_create_curve(struct ath_hw *ah,
+ struct ath9k_hw_cal_data *caldata, int chain)
+ {
+@@ -821,6 +917,9 @@ int ar9003_paprd_create_curve(struct ath
+ if (!create_pa_curve(data_L, data_U, pa_table, small_signal_gain))
+ status = -2;
+
++ if (ar9003_paprd_retrain_pa_in(ah, caldata, chain))
++ status = -EINPROGRESS;
++
+ REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
+ AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
+
+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
+@@ -625,6 +625,10 @@
+ #define AR_PHY_AIC_CTRL_4_B0 (AR_SM_BASE + 0x4c0)
+ #define AR_PHY_AIC_STAT_2_B0 (AR_SM_BASE + 0x4cc)
+
++#define AR_PHY_65NM_CH0_TXRF3 0x16048
++#define AR_PHY_65NM_CH0_TXRF3_CAPDIV2G 0x0000001e
++#define AR_PHY_65NM_CH0_TXRF3_CAPDIV2G_S 1
++
+ #define AR_PHY_65NM_CH0_SYNTH4 0x1608c
+ #define AR_PHY_SYNTH4_LONG_SHIFT_SELECT (AR_SREV_9462(ah) ? 0x00000001 : 0x00000002)
+ #define AR_PHY_SYNTH4_LONG_SHIFT_SELECT_S (AR_SREV_9462(ah) ? 0 : 1)
+--- a/drivers/net/wireless/ath/ath9k/link.c
++++ b/drivers/net/wireless/ath/ath9k/link.c
+@@ -254,6 +254,7 @@ void ath_paprd_calibrate(struct work_str
+ int chain_ok = 0;
+ int chain;
+ int len = 1800;
++ int ret;
+
+ if (!caldata)
+ return;
+@@ -302,7 +303,13 @@ void ath_paprd_calibrate(struct work_str
+ break;
+ }
+
+- if (ar9003_paprd_create_curve(ah, caldata, chain)) {
++ ret = ar9003_paprd_create_curve(ah, caldata, chain);
++ if (ret == -EINPROGRESS) {
++ ath_dbg(common, CALIBRATE,
++ "PAPRD curve on chain %d needs to be re-trained\n",
++ chain);
++ break;
++ } else if (ret) {
+ ath_dbg(common, CALIBRATE,
+ "PAPRD create curve failed on chain %d\n",
+ chain);
diff --git a/package/mac80211/patches/572-ath9k_enable_paprd.patch b/package/mac80211/patches/572-ath9k_enable_paprd.patch
new file mode 100644
index 0000000..ff39587
--- /dev/null
+++ b/package/mac80211/patches/572-ath9k_enable_paprd.patch
@@ -0,0 +1,12 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -464,9 +464,6 @@ static void ath9k_hw_init_config(struct
+ ah->config.spurchans[i][1] = AR_NO_SPUR;
+ }
+
+- /* PAPRD needs some more work to be enabled */
+- ah->config.paprd_disable = 1;
+-
+ ah->config.rx_intr_mitigation = true;
+ ah->config.pcieSerDesWrite = true;
+