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ath9k_hw: Fix spur mitigation for AR9565

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Exclude CCK spur mitigation, freq 2437 for OFDM and
add AR9565-specific logic.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2012-09-10 09:20:20 +05:30 committed by John W. Linville
parent e41db61d55
commit d43d04a9e1
2 changed files with 72 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
drivers/net/wireless/ath/ath9k/ar9003_phy.c
View File

@ -206,6 +206,7 @@ static void ar9003_hw_spur_mitigate_mrc_cck(struct ath_hw *ah,
for (i = 0; i < max_spur_cnts; i++) {
if (AR_SREV_9462(ah) && (i == 0 || i == 3))
continue;
negative = 0;
if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
AR_SREV_9550(ah))
@ -301,7 +302,9 @@ static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
int freq_offset,
int spur_freq_sd,
int spur_delta_phase,
int spur_subchannel_sd)
int spur_subchannel_sd,
int range,
int synth_freq)
{
int mask_index = 0;
@ -316,8 +319,11 @@ static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
AR_PHY_SFCORR_EXT_SPUR_SUBCHANNEL_SD, spur_subchannel_sd);
REG_RMW_FIELD(ah, AR_PHY_TIMING11,
AR_PHY_TIMING11_USE_SPUR_FILTER_IN_AGC, 0x1);
REG_RMW_FIELD(ah, AR_PHY_TIMING11,
AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
if (!(AR_SREV_9565(ah) && range == 10 && synth_freq == 2437))
REG_RMW_FIELD(ah, AR_PHY_TIMING11,
AR_PHY_TIMING11_USE_SPUR_FILTER_IN_SELFCOR, 0x1);
REG_RMW_FIELD(ah, AR_PHY_TIMING4,
AR_PHY_TIMING4_ENABLE_SPUR_RSSI, 0x1);
REG_RMW_FIELD(ah, AR_PHY_SPUR_REG,
@ -358,9 +364,44 @@ static void ar9003_hw_spur_ofdm(struct ath_hw *ah,
AR_PHY_SPUR_REG_MASK_RATE_CNTL, 0xff);
}
static void ar9003_hw_spur_ofdm_9565(struct ath_hw *ah,
int freq_offset)
{
int mask_index = 0;
mask_index = (freq_offset << 4) / 5;
if (mask_index < 0)
mask_index = mask_index - 1;
mask_index = mask_index & 0x7f;
REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_B,
mask_index);
/* A == B */
REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_B,
AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_IDX_A,
mask_index);
REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_B,
mask_index);
REG_RMW_FIELD(ah, AR_PHY_PILOT_SPUR_MASK,
AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_B, 0xe);
REG_RMW_FIELD(ah, AR_PHY_CHAN_SPUR_MASK,
AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_B, 0xe);
/* A == B */
REG_RMW_FIELD(ah, AR_PHY_SPUR_MASK_B,
AR_PHY_SPUR_MASK_A_CF_PUNC_MASK_A, 0xa0);
}
static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
struct ath9k_channel *chan,
int freq_offset)
int freq_offset,
int range,
int synth_freq)
{
int spur_freq_sd = 0;
int spur_subchannel_sd = 0;
@ -402,7 +443,8 @@ static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah,
freq_offset,
spur_freq_sd,
spur_delta_phase,
spur_subchannel_sd);
spur_subchannel_sd,
range, synth_freq);
}
/* Spur mitigation for OFDM */
@ -447,7 +489,17 @@ static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
freq_offset = ath9k_hw_fbin2freq(spurChansPtr[i], mode);
freq_offset -= synth_freq;
if (abs(freq_offset) < range) {
ar9003_hw_spur_ofdm_work(ah, chan, freq_offset);
ar9003_hw_spur_ofdm_work(ah, chan, freq_offset,
range, synth_freq);
if (AR_SREV_9565(ah) && (i < 4)) {
freq_offset = ath9k_hw_fbin2freq(spurChansPtr[i + 1],
mode);
freq_offset -= synth_freq;
if (abs(freq_offset) < range)
ar9003_hw_spur_ofdm_9565(ah, freq_offset);
}
break;
}
}
@ -456,7 +508,8 @@ static void ar9003_hw_spur_mitigate_ofdm(struct ath_hw *ah,
static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
struct ath9k_channel *chan)
{
ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
if (!AR_SREV_9565(ah))
ar9003_hw_spur_mitigate_mrc_cck(ah, chan);
ar9003_hw_spur_mitigate_ofdm(ah, chan);
}

15
drivers/net/wireless/ath/ath9k/ar9003_phy.h
View File

@ -223,15 +223,24 @@
#define AR_PHY_ML_CNTL_2 (AR_MRC_BASE + 0x1c)
#define AR_PHY_TST_ADC (AR_MRC_BASE + 0x20)
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A 0x00000FE0
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A 0x00000FE0
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_A_S 5
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A 0x1F
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A_S 0
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A 0x1F
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_A_S 0
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_B 0x00FE0000
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_IDX_B_S 17
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_B 0x0001F000
#define AR_PHY_PILOT_SPUR_MASK_CF_PILOT_MASK_B_S 12
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A 0x00000FE0
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_A_S 5
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A 0x1F
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_A_S 0
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_B 0x00FE0000
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_IDX_B_S 17
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_B 0x0001F000
#define AR_PHY_CHAN_SPUR_MASK_CF_CHAN_MASK_B_S 12
/*
* MRC Feild Definitions