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ath9k_hw: Disable PAPRD based on paprd_ht20_mask for 5GHz

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Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mohammed Shafi Shajakhan 2011-07-08 13:01:32 +05:30 committed by John W. Linville
parent e156103cee
commit 331c5ea2d9
2 changed files with 32 additions and 0 deletions
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30
drivers/net/wireless/ath/ath9k/ar9003_paprd.c
View File

@ -21,6 +21,36 @@ void ar9003_paprd_enable(struct ath_hw *ah, bool val)
{
struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
struct ath9k_channel *chan = ah->curchan;
struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
/*
* 3 bits for modalHeader5G.papdRateMaskHt20
* is used for sub-band disabling of PAPRD.
* 5G band is divided into 3 sub-bands -- upper,
* middle, lower.
* if bit 30 of modalHeader5G.papdRateMaskHt20 is set
* -- disable PAPRD for upper band 5GHz
* if bit 29 of modalHeader5G.papdRateMaskHt20 is set
* -- disable PAPRD for middle band 5GHz
* if bit 28 of modalHeader5G.papdRateMaskHt20 is set
* -- disable PAPRD for lower band 5GHz
*/
if (IS_CHAN_5GHZ(chan)) {
if (chan->channel >= UPPER_5G_SUB_BAND_START) {
if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
& BIT(30))
val = false;
} else if (chan->channel >= MID_5G_SUB_BAND_START) {
if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
& BIT(29))
val = false;
} else {
if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20)
& BIT(28))
val = false;
}
}
if (val) {
ah->paprd_table_write_done = true;

2
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -143,6 +143,8 @@
#define AR_KEYTABLE_SIZE 128
#define POWER_UP_TIME 10000
#define SPUR_RSSI_THRESH 40
#define UPPER_5G_SUB_BAND_START 5700
#define MID_5G_SUB_BAND_START 5400
#define CAB_TIMEOUT_VAL 10
#define BEACON_TIMEOUT_VAL 10