For testing purposes, this patch adds a file named power_level to the
debugfs for bcm43xx-mac80211. If this file is read, it returns the current
setting for the Desired power level. Writing a number between 5 and 18
will set that value as the new value for the desired power setting.
Signed-off-by: Larry Finger [EMAIL PROTECTED]
---
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.c
===
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.c
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.c
@@ -151,6 +151,74 @@ out_unlock_bb:
return res;
}
+static ssize_t power_read_file(struct file *file, char __user *userbuf,
+size_t count, loff_t *ppos)
+{
+ struct bcm43xx_wldev *dev = file-private_data;
+ const size_t len = ARRAY_SIZE(big_buffer);
+ char *buf = big_buffer;
+ size_t pos = 0;
+ ssize_t res;
+ unsigned long flags;
+
+ mutex_lock(big_buffer_mutex);
+ mutex_lock(dev-wl-mutex);
+ spin_lock_irqsave(dev-wl-irq_lock, flags);
+ if (bcm43xx_status(dev) BCM43xx_STAT_STARTED) {
+ fappend(Board not initialized.\n);
+ goto out;
+ }
+ fappend(%d dBm\n,dev-phy.power_level);
+
+out:
+ spin_unlock_irqrestore(dev-wl-irq_lock, flags);
+ mutex_unlock(dev-wl-mutex);
+ res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+ mutex_unlock(big_buffer_mutex);
+
+ return res;
+}
+
+static ssize_t power_write_file(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct bcm43xx_wldev *dev = file-private_data;
+ char *buf = big_buffer;
+ ssize_t buf_size;
+ ssize_t res;
+ unsigned long flags;
+ int power;
+
+ mutex_lock(big_buffer_mutex);
+ buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
+ if (copy_from_user(buf, user_buf, buf_size)) {
+ res = -EFAULT;
+ goto out_unlock_bb;
+ }
+ mutex_lock(dev-wl-mutex);
+ spin_lock_irqsave(dev-wl-irq_lock, flags);
+ if (bcm43xx_status(dev) BCM43xx_STAT_STARTED) {
+ bcmerr(dev-wl, debugfs: Board not initialized.\n);
+ res = -EFAULT;
+ goto out_unlock;
+ }
+ if ((sscanf(buf, %d, power) != 1) || (power 18 || power 5)) {
+ bcmerr(dev-wl, debugfs: Invalid values for power level\n);
+ res = -EINVAL;
+ goto out_unlock;
+ }
+ dev-phy.power_level = power;
+ res = buf_size;
+
+out_unlock:
+ spin_unlock_irqrestore(dev-wl-irq_lock, flags);
+ mutex_unlock(dev-wl-mutex);
+out_unlock_bb:
+ mutex_unlock(big_buffer_mutex);
+
+ return res;
+}
+
static ssize_t txstat_read_file(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
@@ -405,6 +473,12 @@ static struct file_operations restart_fo
.open = open_file_generic,
};
+static struct file_operations power_fops = {
+ .read = power_read_file,
+ .write = power_write_file,
+ .open = open_file_generic,
+};
+
int bcm43xx_debug(struct bcm43xx_wldev *dev, enum bcm43xx_dyndbg feature)
{
@@ -495,6 +569,11 @@ void bcm43xx_debugfs_add_device(struct b
if (IS_ERR(e-dentry_restart))
e-dentry_restart = NULL;
+ e-dentry_power = debugfs_create_file(power_level, 0600, e-subdir,
+dev, power_fops);
+ if (IS_ERR(e-dentry_power))
+ e-dentry_power = NULL;
+
bcm43xx_add_dynamic_debug(dev);
}
@@ -512,6 +591,7 @@ void bcm43xx_debugfs_remove_device(struc
debugfs_remove(e-dentry_txstat);
debugfs_remove(e-dentry_restart);
debugfs_remove(e-dentry_txpower_g);
+ debugfs_remove(e-dentry_power);
debugfs_remove(e-subdir);
kfree(e-txstatlog.log);
kfree(e);
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.h
===
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.h
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_debugfs.h
@@ -35,6 +35,7 @@ struct bcm43xx_dfsentry {
struct dentry *dentry_txstat;
struct dentry *dentry_txpower_g;
struct dentry *dentry_restart;
+ struct dentry *dentry_power;
struct bcm43xx_wldev *dev;
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
===
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
@@ -2762,12 +2762,11 @@ static int bcm43xx_dev_config(struct iee
}
/*
