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authorMohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>2011-07-08 13:01:32 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-07-08 11:47:17 -0400
commit331c5ea2d92c76bfe58a9bb5e6d21160850a29bc (patch)
tree0e5affcb372e1dd717d636c03ed6eb8c8b32d5f6 /drivers/net/wireless/ath/ath9k
parente156103cee78a1dd1c0d14efe08aa36fc9285013 (diff)
ath9k_hw: Disable PAPRD based on paprd_ht20_mask for 5GHz
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_paprd.c30
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.h2
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
index de1972307b0..f80d1d63398 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c
@@ -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;
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 818acdd1ba9..a1c317455bc 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -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