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ath9k: clean up some code duplication related to noise floor handling
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22037 3c298f89-4303-0410-b956-a3cf2f4a3e73
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207
package/mac80211/patches/531-ath9k_nf_cleanup.patch
Normal file
207
package/mac80211/patches/531-ath9k_nf_cleanup.patch
Normal file
@ -0,0 +1,207 @@
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--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
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+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
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@@ -1497,50 +1497,25 @@ static bool ar5008_hw_ani_control_new(st
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static void ar5008_hw_do_getnf(struct ath_hw *ah,
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int16_t nfarray[NUM_NF_READINGS])
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{
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- struct ath_common *common = ath9k_hw_common(ah);
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int16_t nf;
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nf = MS(REG_READ(ah, AR_PHY_CCA), AR_PHY_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 0] is %d\n", nf);
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- nfarray[0] = nf;
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+ nfarray[0] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR_PHY_CH1_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 1] is %d\n", nf);
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- nfarray[1] = nf;
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+ nfarray[1] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CH2_CCA), AR_PHY_CH2_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 2] is %d\n", nf);
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- nfarray[2] = nf;
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+ nfarray[2] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 0] is %d\n", nf);
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- nfarray[3] = nf;
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+ nfarray[3] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR_PHY_CH1_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 1] is %d\n", nf);
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- nfarray[4] = nf;
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+ nfarray[4] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CH2_EXT_CCA), AR_PHY_CH2_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 2] is %d\n", nf);
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- nfarray[5] = nf;
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+ nfarray[5] = sign_extend(nf, 9);
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}
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static void ar5008_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
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--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
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+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
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@@ -471,47 +471,22 @@ static u32 ar9002_hw_compute_pll_control
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static void ar9002_hw_do_getnf(struct ath_hw *ah,
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int16_t nfarray[NUM_NF_READINGS])
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{
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- struct ath_common *common = ath9k_hw_common(ah);
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int16_t nf;
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nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
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-
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 0] is %d\n", nf);
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-
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- nfarray[0] = nf;
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-
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- if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
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- nf = MS(REG_READ(ah, AR_PHY_CH1_CCA),
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- AR9280_PHY_CH1_MINCCA_PWR);
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-
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 1] is %d\n", nf);
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- nfarray[1] = nf;
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- }
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+ nfarray[0] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 0] is %d\n", nf);
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-
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- nfarray[3] = nf;
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-
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- if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
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- nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA),
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- AR9280_PHY_CH1_EXT_MINCCA_PWR);
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-
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 1] is %d\n", nf);
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- nfarray[4] = nf;
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- }
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+ nfarray[3] = sign_extend(nf, 9);
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+
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+ if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
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+ return;
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+
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+ nf = MS(REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
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+ nfarray[1] = sign_extend(nf, 9);
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+
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+ nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
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+ nfarray[4] = sign_extend(nf, 9);
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}
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static void ar9002_hw_set_nf_limits(struct ath_hw *ah)
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--- a/drivers/net/wireless/ath/ath9k/calib.c
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+++ b/drivers/net/wireless/ath/ath9k/calib.c
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@@ -182,6 +182,10 @@ static void ath9k_hw_nf_sanitize(struct
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if (!nf[i])
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continue;
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+ ath_print(common, ATH_DBG_CALIBRATE,
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+ "NF calibrated [%s] [chain %d] is %d\n",
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+ (i > 3 ? "ext" : "ctl"), i % 3, nf[i]);
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+
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if (nf[i] > limit->max) {
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ath_print(common, ATH_DBG_CALIBRATE,
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"NF[%d] (%d) > MAX (%d), correcting to MAX",
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -853,6 +853,12 @@ static inline struct ath_hw_ops *ath9k_h
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return &ah->ops;
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}
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+static inline int sign_extend(int val, const int nbits)
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+{
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+ int order = BIT(nbits-1);
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+ return (val ^ order) - order;
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+}
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+
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/* Initialization, Detach, Reset */
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const char *ath9k_hw_probe(u16 vendorid, u16 devid);
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void ath9k_hw_deinit(struct ath_hw *ah);
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--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
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+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
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@@ -1018,50 +1018,25 @@ static bool ar9003_hw_ani_control(struct
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static void ar9003_hw_do_getnf(struct ath_hw *ah,
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int16_t nfarray[NUM_NF_READINGS])
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{
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- struct ath_common *common = ath9k_hw_common(ah);
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int16_t nf;
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nf = MS(REG_READ(ah, AR_PHY_CCA_0), AR_PHY_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 0] is %d\n", nf);
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- nfarray[0] = nf;
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+ nfarray[0] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CCA_1), AR_PHY_CH1_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 1] is %d\n", nf);
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- nfarray[1] = nf;
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+ nfarray[1] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ctl] [chain 2] is %d\n", nf);
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- nfarray[2] = nf;
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+ nfarray[2] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 0] is %d\n", nf);
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- nfarray[3] = nf;
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+ nfarray[3] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_1), AR_PHY_CH1_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 1] is %d\n", nf);
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- nfarray[4] = nf;
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+ nfarray[4] = sign_extend(nf, 9);
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nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_2), AR_PHY_CH2_EXT_MINCCA_PWR);
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- if (nf & 0x100)
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- nf = 0 - ((nf ^ 0x1ff) + 1);
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- ath_print(common, ATH_DBG_CALIBRATE,
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- "NF calibrated [ext] [chain 2] is %d\n", nf);
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- nfarray[5] = nf;
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+ nfarray[5] = sign_extend(nf, 9);
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}
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static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
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