ath5k: Support synth-only channel change for AR2413/AR5413
* Add synth-only channel change for AR2413/5413. When we call
ath5k_reset with a channel ath5k_hw_reset will first try to
set channel on PHY while PHY is running instead of doing a normal
full reset. To do this phy_init has to change to implement this
functionality.
* Clean up change_channel flag, what it really did was skip PCU
registers when setting initvals. This is done because on reset
PCU registers are not affected (except the registers we set
in pcu init and -due to hw problems- TSF). Use a new skip_pcu
flag that's not misleading instead. In the future we might use
that to also skip PCU reset and save us the TSF etc problems
(needs testing because standard practice is to reset everything).
* Use fast channel change only when setting channel, and set skip_pcu
to false only on init. When we reset the card due to DMA or PHY
problems skip pcu but never do a fast channel change.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 526d8bc..33cd1bc 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -80,7 +80,8 @@
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION("0.6.0 (EXPERIMENTAL)");
-static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan);
+static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan,
+ bool skip_pcu);
static int ath5k_beacon_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
static void ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf);
@@ -496,7 +497,7 @@
* hardware at the new frequency, and then re-enable
* the relevant bits of the h/w.
*/
- return ath5k_reset(sc, chan);
+ return ath5k_reset(sc, chan, true);
}
static void
@@ -2327,7 +2328,7 @@
if (needreset) {
ATH5K_DBG(sc, ATH5K_DEBUG_RESET,
"TX queues stuck, resetting\n");
- ath5k_reset(sc, sc->curchan);
+ ath5k_reset(sc, NULL, true);
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
@@ -2407,7 +2408,7 @@
AR5K_INT_RXORN | AR5K_INT_TXDESC | AR5K_INT_TXEOL |
AR5K_INT_FATAL | AR5K_INT_GLOBAL | AR5K_INT_MIB;
- ret = ath5k_reset(sc, NULL);
+ ret = ath5k_reset(sc, NULL, false);
if (ret)
goto done;
@@ -2506,7 +2507,8 @@
* This should be called with sc->lock.
*/
static int
-ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan)
+ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan,
+ bool skip_pcu)
{
struct ath5k_hw *ah = sc->ah;
int ret;
@@ -2523,7 +2525,8 @@
sc->curchan = chan;
sc->curband = &sc->sbands[chan->band];
}
- ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL);
+ ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL,
+ skip_pcu);
if (ret) {
ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret);
goto err;
@@ -2569,7 +2572,7 @@
reset_work);
mutex_lock(&sc->lock);
- ath5k_reset(sc, sc->curchan);
+ ath5k_reset(sc, NULL, true);
mutex_unlock(&sc->lock);
}