ath9k_hw: abstract loading noisefloor

This is the last call on calib.c which acceses PHY stuff,
with this change we calib.c is now generic between both
all supported hardware families.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

6 files changed, 81 insertions, 68 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
index bd3792c78af..94eb069b5ae 100644
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -1247,6 +1247,72 @@ static void ar5008_hw_do_getnf(struct ath_hw *ah,
         nfarray[5] = nf;
 }
 
+static void ar5008_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+        struct ath9k_nfcal_hist *h;
+        int i, j;
+        int32_t val;
+        const u32 ar5416_cca_regs[6] = {
+                AR_PHY_CCA,
+                AR_PHY_CH1_CCA,
+                AR_PHY_CH2_CCA,
+                AR_PHY_EXT_CCA,
+                AR_PHY_CH1_EXT_CCA,
+                AR_PHY_CH2_EXT_CCA
+        };
+        u8 chainmask, rx_chain_status;
+
+        rx_chain_status = REG_READ(ah, AR_PHY_RX_CHAINMASK);
+        if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+                chainmask = 0x9;
+        else if (AR_SREV_9280(ah) || AR_SREV_9287(ah)) {
+                if ((rx_chain_status & 0x2) || (rx_chain_status & 0x4))
+                        chainmask = 0x1B;
+                else
+                        chainmask = 0x09;
+        } else {
+                if (rx_chain_status & 0x4)
+                        chainmask = 0x3F;
+                else if (rx_chain_status & 0x2)
+                        chainmask = 0x1B;
+                else
+                        chainmask = 0x09;
+        }
+
+        h = ah->nfCalHist;
+
+        for (i = 0; i < NUM_NF_READINGS; i++) {
+                if (chainmask & (1 << i)) {
+                        val = REG_READ(ah, ar5416_cca_regs[i]);
+                        val &= 0xFFFFFE00;
+                        val |= (((u32) (h[i].privNF) << 1) & 0x1ff);
+                        REG_WRITE(ah, ar5416_cca_regs[i], val);
+                }
+        }
+
+        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+                    AR_PHY_AGC_CONTROL_ENABLE_NF);
+        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+                    AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
+        REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
+
+        for (j = 0; j < 5; j++) {
+                if ((REG_READ(ah, AR_PHY_AGC_CONTROL) &
+                     AR_PHY_AGC_CONTROL_NF) == 0)
+                        break;
+                udelay(50);
+        }
+
+        for (i = 0; i < NUM_NF_READINGS; i++) {
+                if (chainmask & (1 << i)) {
+                        val = REG_READ(ah, ar5416_cca_regs[i]);
+                        val &= 0xFFFFFE00;
+                        val |= (((u32) (-50) << 1) & 0x1ff);
+                        REG_WRITE(ah, ar5416_cca_regs[i], val);
+                }
+        }
+}
+
 void ar5008_hw_attach_phy_ops(struct ath_hw *ah)
 {
         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
@@ -1270,6 +1336,7 @@ void ar5008_hw_attach_phy_ops(struct ath_hw *ah)
         priv_ops->set_diversity = ar5008_set_diversity;
         priv_ops->ani_control = ar5008_hw_ani_control;
         priv_ops->do_getnf = ar5008_hw_do_getnf;
+        priv_ops->loadnf = ar5008_hw_loadnf;
 
         if (AR_SREV_9100(ah))
                 priv_ops->compute_pll_control = ar9100_hw_compute_pll_control;
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 00e4cb8d5f0..cd80a43ffcf 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -195,6 +195,11 @@ static bool ar9003_hw_iscal_supported(struct ath_hw *ah,
         return false;
 }
 
+static void ar9003_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
+{
+        /* TODO */
+}
+
 void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
 {
         struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
@@ -204,6 +209,7 @@ void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
         priv_ops->init_cal = ar9003_hw_init_cal;
         priv_ops->setup_calibration = ar9003_hw_setup_calibration;
         priv_ops->iscal_supported = ar9003_hw_iscal_supported;
+        priv_ops->loadnf = ar9003_hw_loadnf;
 
         ops->calibrate = ar9003_hw_calibrate;
 }
diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c
index 085e1264fbe..6982577043b 100644
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -16,7 +16,6 @@
 
 #include "hw.h"
 #include "hw-ops.h"
-#include "ar9002_phy.h"
 
 /* Common calibration code */
 
@@ -174,72 +173,6 @@ void ath9k_hw_start_nfcal(struct ath_hw *ah)
         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
 }
 
-void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
-{
-        struct ath9k_nfcal_hist *h;
-        int i, j;
-        int32_t val;
-        const u32 ar5416_cca_regs[6] = {
-                AR_PHY_CCA,
-                AR_PHY_CH1_CCA,
-                AR_PHY_CH2_CCA,
-                AR_PHY_EXT_CCA,
-                AR_PHY_CH1_EXT_CCA,
-                AR_PHY_CH2_EXT_CCA
-        };
-        u8 chainmask, rx_chain_status;
-
-        rx_chain_status = REG_READ(ah, AR_PHY_RX_CHAINMASK);
-        if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
-                chainmask = 0x9;
-        else if (AR_SREV_9280(ah) || AR_SREV_9287(ah)) {
-                if ((rx_chain_status & 0x2) || (rx_chain_status & 0x4))
-                        chainmask = 0x1B;
-                else
-                        chainmask = 0x09;
-        } else {
-                if (rx_chain_status & 0x4)
-                        chainmask = 0x3F;
-                else if (rx_chain_status & 0x2)
-                        chainmask = 0x1B;
-                else
-                        chainmask = 0x09;
-        }
-
-        h = ah->nfCalHist;
-
-        for (i = 0; i < NUM_NF_READINGS; i++) {
-                if (chainmask & (1 << i)) {
-                        val = REG_READ(ah, ar5416_cca_regs[i]);
-                        val &= 0xFFFFFE00;
-                        val |= (((u32) (h[i].privNF) << 1) & 0x1ff);
-                        REG_WRITE(ah, ar5416_cca_regs[i], val);
-                }
-        }
-
-        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
-                    AR_PHY_AGC_CONTROL_ENABLE_NF);
-        REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
-                    AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
-        REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
-
-        for (j = 0; j < 5; j++) {
-                if ((REG_READ(ah, AR_PHY_AGC_CONTROL) &
-                     AR_PHY_AGC_CONTROL_NF) == 0)
-                        break;
-                udelay(50);
-        }
-
-        for (i = 0; i < NUM_NF_READINGS; i++) {
-                if (chainmask & (1 << i)) {
-                        val = REG_READ(ah, ar5416_cca_regs[i]);
-                        val &= 0xFFFFFE00;
-                        val |= (((u32) (-50) << 1) & 0x1ff);
-                        REG_WRITE(ah, ar5416_cca_regs[i], val);
-                }
-        }
-}
-
 int16_t ath9k_hw_getnf(struct ath_hw *ah,
                        struct ath9k_channel *chan)
 {
diff --git a/drivers/net/wireless/ath/ath9k/calib.h b/drivers/net/wireless/ath/ath9k/calib.h
index 9f6c21d50f1..25828e89e7c 100644
--- a/drivers/net/wireless/ath/ath9k/calib.h
+++ b/drivers/net/wireless/ath/ath9k/calib.h
@@ -114,7 +114,6 @@ struct ath9k_pacal_info{
 
 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 void ath9k_hw_start_nfcal(struct ath_hw *ah);
-void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
 int16_t ath9k_hw_getnf(struct ath_hw *ah,
                        struct ath9k_channel *chan);
 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
diff --git a/drivers/net/wireless/ath/ath9k/hw-ops.h b/drivers/net/wireless/ath/ath9k/hw-ops.h
index b777fd1894f..b444ce5f09f 100644
--- a/drivers/net/wireless/ath/ath9k/hw-ops.h
+++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
@@ -182,6 +182,12 @@ static inline void ath9k_hw_do_getnf(struct ath_hw *ah,
         ath9k_hw_private_ops(ah)->do_getnf(ah, nfarray);
 }
 
+static inline void ath9k_hw_loadnf(struct ath_hw *ah,
+                                   struct ath9k_channel *chan)
+{
+        ath9k_hw_private_ops(ah)->loadnf(ah, chan);
+}
+
 static inline bool ath9k_hw_init_cal(struct ath_hw *ah,
                                      struct ath9k_channel *chan)
 {
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 7a32733108a..d28a904606b 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -486,6 +486,7 @@ struct ath_gen_timer_table {
  *      AR_RTC_PLL_CONTROL for a given channel
  * @setup_calibration: set up calibration
  * @iscal_supported: used to query if a type of calibration is supported
+ * @loadnf: load noise floor read from each chain on the CCA registers
  */
 struct ath_hw_private_ops {
         /* Calibration ops */
@@ -528,6 +529,7 @@ struct ath_hw_private_ops {
         bool (*ani_control)(struct ath_hw *ah, enum ath9k_ani_cmd cmd,
                             int param);
         void (*do_getnf)(struct ath_hw *ah, int16_t nfarray[NUM_NF_READINGS]);
+        void (*loadnf)(struct ath_hw *ah, struct ath9k_channel *chan);
 };
 
 /**