by Vasanthakumar Thiagarajan

[permalink] [raw]

Subject: [PATCH 08/11] ath9k_hw: Improve power control accuracy for AR9003

It is done for 5Ghz by adding three temperature slopes.

Signed-off-by: Vasanthakumar Thiagarajan <[email protected]>
---
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index da26d37..5ffeda2 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4062,6 +4062,7 @@ static int ar9003_hw_power_control_override(struct ath_hw *ah,
{
int tempSlope = 0;
struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+ int f[3], t[3];

REG_RMW(ah, AR_PHY_TPC_11_B0,
(correction[0] << AR_PHY_TPC_OLPC_GAIN_DELTA_S),
@@ -4090,7 +4091,16 @@ static int ar9003_hw_power_control_override(struct ath_hw *ah,
*/
if (frequency < 4000)
tempSlope = eep->modalHeader2G.tempSlope;
- else
+ else if (eep->base_ext2.tempSlopeLow != 0) {
+ t[0] = eep->base_ext2.tempSlopeLow;
+ f[0] = 5180;
+ t[1] = eep->modalHeader5G.tempSlope;
+ f[1] = 5500;
+ t[2] = eep->base_ext2.tempSlopeHigh;
+ f[2] = 5785;
+ tempSlope = ar9003_hw_power_interpolate((s32) frequency,
+ f, t, 3);
+ } else
tempSlope = eep->modalHeader5G.tempSlope;

REG_RMW_FIELD(ah, AR_PHY_TPC_19, AR_PHY_TPC_19_ALPHA_THERM, tempSlope);
--
1.7.0.4

2010-11-10 13:04:01

by Vasanthakumar Thiagarajan

[permalink] [raw]

Subject: [PATCH 07/11] ath9k_hw: Enable strong signal detection for AR9003

Attenuation from eeprom is configured into attenuator control
register.

Signed-off-by: Vasanthakumar Thiagarajan <[email protected]>
---
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 79 ++++++++++++++++++++++++
1 files changed, 79 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 17f73e4..da26d37 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -57,6 +57,8 @@
#define SUB_NUM_CTL_MODES_AT_5G_40 2 /* excluding HT40, EXT-OFDM */
#define SUB_NUM_CTL_MODES_AT_2G_40 3 /* excluding HT40, EXT-OFDM, EXT-CCK */

+static int ar9003_hw_power_interpolate(int32_t x,
+ int32_t *px, int32_t *py, u_int16_t np);
static const struct ar9300_eeprom ar9300_default = {
.eepromVersion = 2,
.templateVersion = 2,
@@ -3443,6 +3445,82 @@ static void ar9003_hw_drive_strength_apply(struct ath_hw *ah)
REG_WRITE(ah, AR_PHY_65NM_CH0_BIAS4, reg);
}

+static u16 ar9003_hw_atten_chain_get(struct ath_hw *ah, int chain,
+ struct ath9k_channel *chan)
+{
+ int f[3], t[3];
+ u16 value;
+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+
+ if (chain >= 0 && chain < 3) {
+ if (IS_CHAN_2GHZ(chan))
+ return eep->modalHeader2G.xatten1DB[chain];
+ else if (eep->base_ext2.xatten1DBLow[chain] != 0) {
+ t[0] = eep->base_ext2.xatten1DBLow[chain];
+ f[0] = 5180;
+ t[1] = eep->modalHeader5G.xatten1DB[chain];
+ f[1] = 5500;
+ t[2] = eep->base_ext2.xatten1DBHigh[chain];
+ f[2] = 5785;
+ value = ar9003_hw_power_interpolate((s32) chan->channel,
+ f, t, 3);
+ return value;
+ } else
+ return eep->modalHeader5G.xatten1DB[chain];
+ }
+
+ return 0;
+}
+
+
+static u16 ar9003_hw_atten_chain_get_margin(struct ath_hw *ah, int chain,
+ struct ath9k_channel *chan)
+{
+ int f[3], t[3];
+ u16 value;
+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+
+ if (chain >= 0 && chain < 3) {
+ if (IS_CHAN_2GHZ(chan))
+ return eep->modalHeader2G.xatten1Margin[chain];
+ else if (eep->base_ext2.xatten1MarginLow[chain] != 0) {
+ t[0] = eep->base_ext2.xatten1MarginLow[chain];
+ f[0] = 5180;
+ t[1] = eep->modalHeader5G.xatten1Margin[chain];
+ f[1] = 5500;
+ t[2] = eep->base_ext2.xatten1MarginHigh[chain];
+ f[2] = 5785;
+ value = ar9003_hw_power_interpolate((s32) chan->channel,
+ f, t, 3);
+ return value;
+ } else
+ return eep->modalHeader5G.xatten1Margin[chain];
+ }
+
+ return 0;
+}
+
+static void ar9003_hw_atten_apply(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+ int i;
+ u16 value;
+ unsigned long ext_atten_reg[3] = {AR_PHY_EXT_ATTEN_CTL_0,
+ AR_PHY_EXT_ATTEN_CTL_1,
+ AR_PHY_EXT_ATTEN_CTL_2,
+ };
+
+ /* Test value. if 0 then attenuation is unused. Don't load anything. */
+ for (i = 0; i < 3; i++) {
+ value = ar9003_hw_atten_chain_get(ah, i, chan);
+ REG_RMW_FIELD(ah, ext_atten_reg[i],
+ AR_PHY_EXT_ATTEN_CTL_XATTEN1_DB, value);
+
+ value = ar9003_hw_atten_chain_get_margin(ah, i, chan);
+ REG_RMW_FIELD(ah, ext_atten_reg[i],
+ AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN, value);
+ }
+}
+
static void ar9003_hw_internal_regulator_apply(struct ath_hw *ah)
{
int internal_regulator =
@@ -3474,6 +3552,7 @@ static void ath9k_hw_ar9300_set_board_values(struct ath_hw *ah,
ar9003_hw_xpa_bias_level_apply(ah, IS_CHAN_2GHZ(chan));
ar9003_hw_ant_ctrl_apply(ah, IS_CHAN_2GHZ(chan));
ar9003_hw_drive_strength_apply(ah);
+ ar9003_hw_atten_apply(ah, chan);
ar9003_hw_internal_regulator_apply(ah);
}

--
1.7.0.4