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authorMohammed Shafi Shajakhan <mshajakhan@atheros.com>2011-05-26 10:56:15 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-06-01 15:36:29 -0400
commit05c0be2f7f10404e5b3bc4105f9206096e9b8767 (patch)
treec9753e6c2720688a68ac15778345d27e3945d33e
parent81168e509f06aa205b240c1804ec2b9b5add4772 (diff)
ath9k: Add a debug entry to start/stop ANI
this helps the user to start/stop ANI dynamically. Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath.h1
-rw-r--r--drivers/net/wireless/ath/ath9k/ath9k.h1
-rw-r--r--drivers/net/wireless/ath/ath9k/debug.c52
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c2
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c33
5 files changed, 79 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 7cf4317a2a84..17c4b56c3874 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -161,6 +161,7 @@ struct ath_common {
const struct ath_bus_ops *bus_ops;
bool btcoex_enabled;
+ bool disable_ani;
};
struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 4cc78449ed9f..3bf1d83ab41f 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -427,6 +427,7 @@ void ath_hw_check(struct work_struct *work);
void ath_hw_pll_work(struct work_struct *work);
void ath_paprd_calibrate(struct work_struct *work);
void ath_ani_calibrate(unsigned long data);
+void ath_start_ani(struct ath_common *common);
/**********/
/* BTCOEX */
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 202399d4fe17..7230d6578b15 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -176,6 +176,56 @@ static const struct file_operations fops_rx_chainmask = {
.llseek = default_llseek,
};
+static ssize_t read_file_disable_ani(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ char buf[32];
+ unsigned int len;
+
+ len = sprintf(buf, "%d\n", common->disable_ani);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_disable_ani(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ unsigned long disable_ani;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &disable_ani))
+ return -EINVAL;
+
+ common->disable_ani = !!disable_ani;
+
+ if (disable_ani) {
+ sc->sc_flags &= ~SC_OP_ANI_RUN;
+ del_timer_sync(&common->ani.timer);
+ } else {
+ sc->sc_flags |= SC_OP_ANI_RUN;
+ ath_start_ani(common);
+ }
+
+ return count;
+}
+
+static const struct file_operations fops_disable_ani = {
+ .read = read_file_disable_ani,
+ .write = write_file_disable_ani,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
static ssize_t read_file_dma(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
@@ -1159,6 +1209,8 @@ int ath9k_init_debug(struct ath_hw *ah)
sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
+ debugfs_create_file("disable_ani", S_IRUSR | S_IWUSR,
+ sc->debug.debugfs_phy, sc, &fops_disable_ani);
debugfs_create_file("regidx", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_regidx);
debugfs_create_file("regval", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 45c585a337e9..d4b166cfdf60 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -519,7 +519,6 @@ static void ath9k_init_misc(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
int i = 0;
-
setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
sc->config.txpowlimit = ATH_TXPOWER_MAX;
@@ -585,6 +584,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
common->priv = sc;
common->debug_mask = ath9k_debug;
common->btcoex_enabled = ath9k_btcoex_enable == 1;
+ common->disable_ani = false;
spin_lock_init(&common->cc_lock);
spin_lock_init(&sc->sc_serial_rw);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 5cf2dc3c65fc..7f945333e2d8 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -134,7 +134,7 @@ void ath9k_ps_restore(struct ath_softc *sc)
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
}
-static void ath_start_ani(struct ath_common *common)
+void ath_start_ani(struct ath_common *common)
{
struct ath_hw *ah = common->ah;
unsigned long timestamp = jiffies_to_msecs(jiffies);
@@ -300,7 +300,8 @@ static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
ath_set_beacon(sc);
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
- ath_start_ani(common);
+ if (!common->disable_ani)
+ ath_start_ani(common);
}
ps_restore:
@@ -968,6 +969,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
sc->hw_busy_count = 0;
/* Stop ANI */
+
del_timer_sync(&common->ani.timer);
ath9k_ps_wakeup(sc);
@@ -1017,7 +1019,9 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
spin_unlock_bh(&sc->sc_pcu_lock);
/* Start ANI */
- ath_start_ani(common);
+ if (!common->disable_ani)
+ ath_start_ani(common);
+
ath9k_ps_restore(sc);
return r;
@@ -1408,8 +1412,12 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
/* Set up ANI */
if (iter_data.naps > 0) {
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_flags |= SC_OP_ANI_RUN;
- ath_start_ani(common);
+
+ if (!common->disable_ani) {
+ sc->sc_flags |= SC_OP_ANI_RUN;
+ ath_start_ani(common);
+ }
+
} else {
sc->sc_flags &= ~SC_OP_ANI_RUN;
del_timer_sync(&common->ani.timer);
@@ -1973,8 +1981,11 @@ static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_flags |= SC_OP_ANI_RUN;
- ath_start_ani(common);
+ if (!common->disable_ani) {
+ sc->sc_flags |= SC_OP_ANI_RUN;
+ ath_start_ani(common);
+ }
+
}
}
@@ -2043,8 +2054,12 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
if (bss_conf->ibss_joined) {
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
- sc->sc_flags |= SC_OP_ANI_RUN;
- ath_start_ani(common);
+
+ if (!common->disable_ani) {
+ sc->sc_flags |= SC_OP_ANI_RUN;
+ ath_start_ani(common);
+ }
+
} else {
sc->sc_flags &= ~SC_OP_ANI_RUN;
del_timer_sync(&common->ani.timer);

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