This fixes random disconnect.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_phy.c | 15 +++++++--
drivers/net/wireless/ath/ath9k/hw.c | 45 +++++++++++++++++---------
drivers/net/wireless/ath/ath9k/phy.h | 1 -
drivers/net/wireless/ath/ath9k/reg.h | 31 +++++++++++++++---
4 files changed, 67 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index eb250d6..f01c31f 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -75,9 +75,18 @@ static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
freq = centers.synth_center;
if (freq < 4800) { /* 2 GHz, fractional mode */
- if (AR_SREV_9485(ah))
- channelSel = CHANSEL_2G_9485(freq);
- else
+ if (AR_SREV_9485(ah)) {
+ u32 chan_frac;
+
+ /*
+ * freq_ref = 40 / (refdiva >> amoderefsel); where refdiva=1 and amoderefsel=0
+ * ndiv = ((chan_mhz * 4) / 3) / freq_ref;
+ * chansel = int(ndiv), chanfrac = (ndiv - chansel) * 0x20000
+ */
+ channelSel = (freq * 4) / 120;
+ chan_frac = (((freq * 4) % 120) * 0x20000) / 120;
+ channelSel = (channelSel << 17) | chan_frac;
+ } else
channelSel = CHANSEL_2G(freq);
/* Set to 2G mode */
bMode = 1;
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 1b5bd13..3a8c41c 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -676,42 +676,55 @@ unsigned long ar9003_get_pll_sqsum_dvc(struct ath_hw *ah)
}
EXPORT_SYMBOL(ar9003_get_pll_sqsum_dvc);
-#define DPLL2_KD_VAL 0x3D
-#define DPLL2_KI_VAL 0x06
-#define DPLL3_PHASE_SHIFT_VAL 0x1
-
+#define DPLL3_PHASE_SHIFT_VAL 0x1
static void ath9k_hw_init_pll(struct ath_hw *ah,
struct ath9k_channel *chan)
{
u32 pll;
if (AR_SREV_9485(ah)) {
- REG_WRITE(ah, AR_RTC_PLL_CONTROL2, 0x886666);
- REG_WRITE(ah, AR_CH0_DDR_DPLL2, 0x19e82f01);
-
- REG_RMW_FIELD(ah, AR_CH0_DDR_DPLL3,
- AR_CH0_DPLL3_PHASE_SHIFT, DPLL3_PHASE_SHIFT_VAL);
- REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
- udelay(1000);
+ /* program BB PLL ki and kd value, ki=0x4, kd=0x40 */
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+ AR_CH0_BB_DPLL2_PLL_PWD, 0x1);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+ AR_CH0_DPLL2_KD, 0x40);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+ AR_CH0_DPLL2_KI, 0x4);
- REG_WRITE(ah, AR_RTC_PLL_CONTROL2, 0x886666);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+ AR_CH0_BB_DPLL1_REFDIV, 0x5);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+ AR_CH0_BB_DPLL1_NINI, 0x58);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL1,
+ AR_CH0_BB_DPLL1_NFRAC, 0x0);
REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
- AR_CH0_DPLL2_KD, DPLL2_KD_VAL);
+ AR_CH0_BB_DPLL2_OUTDIV, 0x1);
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+ AR_CH0_BB_DPLL2_LOCAL_PLL, 0x1);
REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
- AR_CH0_DPLL2_KI, DPLL2_KI_VAL);
+ AR_CH0_BB_DPLL2_EN_NEGTRIG, 0x1);
+ /* program BB PLL phase_shift to 0x6 */
REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
- AR_CH0_DPLL3_PHASE_SHIFT, DPLL3_PHASE_SHIFT_VAL);
- REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x142c);
+ AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x6);
+
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL2,
+ AR_CH0_BB_DPLL2_PLL_PWD, 0x0);
udelay(1000);
+
+ REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
+ AR_CH0_DPLL3_PHASE_SHIFT, DPLL3_PHASE_SHIFT_VAL);
}
pll = ath9k_hw_compute_pll_control(ah, chan);
REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
+ if (AR_SREV_9485(ah))
+ udelay(1000);
+
/* Switch the core clock for ar9271 to 117Mhz */
if (AR_SREV_9271(ah)) {
udelay(500);
diff --git a/drivers/net/wireless/ath/ath9k/phy.h b/drivers/net/wireless/ath/ath9k/phy.h
index f50e2c2..8e5fe9d 100644
--- a/drivers/net/wireless/ath/ath9k/phy.h
+++ b/drivers/net/wireless/ath/ath9k/phy.h
@@ -19,7 +19,6 @@
#define CHANSEL_DIV 15
#define CHANSEL_2G(_freq) (((_freq) * 0x10000) / CHANSEL_DIV)
-#define CHANSEL_2G_9485(_freq) ((((_freq) * 0x10000) - 215) / CHANSEL_DIV)
#define CHANSEL_5G(_freq) (((_freq) * 0x8000) / CHANSEL_DIV)
#define AR_PHY_BASE 0x9800
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 693d543..4b08e89 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1088,14 +1088,35 @@ enum {
#define AR_ENT_OTP 0x40d8
#define AR_ENT_OTP_CHAIN2_DISABLE 0x00020000
#define AR_ENT_OTP_MPSD 0x00800000
-#define AR_CH0_BB_DPLL2 0x16184
+
+#define AR_CH0_BB_DPLL1 0x16180
+#define AR_CH0_BB_DPLL1_REFDIV 0xF8000000
+#define AR_CH0_BB_DPLL1_REFDIV_S 27
+#define AR_CH0_BB_DPLL1_NINI 0x07FC0000
+#define AR_CH0_BB_DPLL1_NINI_S 18
+#define AR_CH0_BB_DPLL1_NFRAC 0x0003FFFF
+#define AR_CH0_BB_DPLL1_NFRAC_S 0
+
+#define AR_CH0_BB_DPLL2 0x16184
+#define AR_CH0_BB_DPLL2_LOCAL_PLL 0x40000000
+#define AR_CH0_BB_DPLL2_LOCAL_PLL_S 30
+#define AR_CH0_DPLL2_KI 0x3C000000
+#define AR_CH0_DPLL2_KI_S 26
+#define AR_CH0_DPLL2_KD 0x03F80000
+#define AR_CH0_DPLL2_KD_S 19
+#define AR_CH0_BB_DPLL2_EN_NEGTRIG 0x00040000
+#define AR_CH0_BB_DPLL2_EN_NEGTRIG_S 18
+#define AR_CH0_BB_DPLL2_PLL_PWD 0x00010000
+#define AR_CH0_BB_DPLL2_PLL_PWD_S 16
+#define AR_CH0_BB_DPLL2_OUTDIV 0x0000E000
+#define AR_CH0_BB_DPLL2_OUTDIV_S 13
+
#define AR_CH0_BB_DPLL3 0x16188
+#define AR_CH0_BB_DPLL3_PHASE_SHIFT 0x3F800000
+#define AR_CH0_BB_DPLL3_PHASE_SHIFT_S 23
+
#define AR_CH0_DDR_DPLL2 0x16244
#define AR_CH0_DDR_DPLL3 0x16248
-#define AR_CH0_DPLL2_KD 0x03F80000
-#define AR_CH0_DPLL2_KD_S 19
-#define AR_CH0_DPLL2_KI 0x3C000000
-#define AR_CH0_DPLL2_KI_S 26
#define AR_CH0_DPLL3_PHASE_SHIFT 0x3F800000
#define AR_CH0_DPLL3_PHASE_SHIFT_S 23
#define AR_PHY_CCA_NOM_VAL_2GHZ -118
--
1.7.0.4
--
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