*Read Spur channel information from EEPROM and use default channels for RF5413 compatible chips that don't have this info on EEPROM.
Signed-off-by: Nick Kossifidis <mickflemm@xxxxxxxxx>
---
drivers/net/wireless/ath/ath5k/eeprom.c | 37 ++++++++++++++++++++++++++++++-
drivers/net/wireless/ath/ath5k/eeprom.h | 20 ++++++++++++++++
2 files changed, 56 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index c0fb3b0..d204546 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -1694,9 +1694,40 @@ ath5k_eeprom_read_ctl_info(struct ath5k_hw *ah)
return 0;
}
+static int
+ath5k_eeprom_read_spur_chans(struct ath5k_hw *ah)
+{
+ struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+ u32 offset;
+ u16 val;
+ int ret = 0, i;
+
+ offset = AR5K_EEPROM_CTL(ee->ee_version) +
+ AR5K_EEPROM_N_CTLS(ee->ee_version);
+
+ if (ee->ee_version < AR5K_EEPROM_VERSION_5_3) {
+ /* No spur info for 5GHz */
+ ee->ee_spur_chans[0][0] = AR5K_EEPROM_NO_SPUR;
+ /* 2 channels for 2GHz (2464/2420) */
+ ee->ee_spur_chans[0][1] = AR5K_EEPROM_5413_SPUR_CHAN_1;
+ ee->ee_spur_chans[1][1] = AR5K_EEPROM_5413_SPUR_CHAN_2;
+ ee->ee_spur_chans[2][1] = AR5K_EEPROM_NO_SPUR;
+ } else if (ee->ee_version >= AR5K_EEPROM_VERSION_5_3) {
+ for (i = 0; i < AR5K_EEPROM_N_SPUR_CHANS; i++) {
+ AR5K_EEPROM_READ(offset, val);
+ ee->ee_spur_chans[i][0] = val;
+ AR5K_EEPROM_READ(offset + AR5K_EEPROM_N_SPUR_CHANS,
+ val);
+ ee->ee_spur_chans[i][1] = val;
+ offset++;
+ }
+ }
+
+ return ret;
+}
/*
- * Initialize eeprom power tables
+ * Initialize eeprom data structure
*/
int
ath5k_eeprom_init(struct ath5k_hw *ah)
@@ -1719,6 +1750,10 @@ ath5k_eeprom_init(struct ath5k_hw *ah)
if (err < 0)
return err;
+ err = ath5k_eeprom_read_spur_chans(ah);
+ if (err < 0)
+ return err;
+
return 0;
}
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.h b/drivers/net/wireless/ath/ath5k/eeprom.h
index b0c0606..df9ffa0 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.h
+++ b/drivers/net/wireless/ath/ath5k/eeprom.h
@@ -211,6 +211,23 @@
#define AR5K_EEPROM_I_GAIN 10
#define AR5K_EEPROM_CCK_OFDM_DELTA 15
#define AR5K_EEPROM_N_IQ_CAL 2
+/* 5GHz/2GHz */
+enum ath5k_eeprom_freq_bands{
+ AR5K_EEPROM_BAND_5GHZ = 0,
+ AR5K_EEPROM_BAND_2GHZ = 1,
+ AR5K_EEPROM_N_FREQ_BANDS,
+};
+/* Spur chans per freq band */
+#define AR5K_EEPROM_N_SPUR_CHANS 5
+/* fbin value for chan 2464 x2 */
+#define AR5K_EEPROM_5413_SPUR_CHAN_1 1640
+/* fbin value for chan 2420 x2 */
+#define AR5K_EEPROM_5413_SPUR_CHAN_2 1200
+#define AR5K_EEPROM_SPUR_CHAN_MASK 0x3FFF
+#define AR5K_EEPROM_NO_SPUR 0x8000
+#define AR5K_SPUR_CHAN_WIDTH 87
+#define AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz 3125
+#define AR5K_SPUR_SYMBOL_WIDTH_TURBO_100Hz 6250
#define AR5K_EEPROM_READ(_o, _v) do { \
ret = ath5k_hw_eeprom_read(ah, (_o), &(_v)); \
@@ -436,6 +453,9 @@ struct ath5k_eeprom_info {
s8 ee_pga_desired_size_turbo[AR5K_EEPROM_N_MODES];
s8 ee_pd_gain_overlap;
+ /* Spur mitigation data (fbin values for spur channels) */
+ u16 ee_spur_chans[AR5K_EEPROM_N_SPUR_CHANS][AR5K_EEPROM_N_FREQ_BANDS];
+
u32 ee_antenna[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
};
--
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