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ath9k: Add a debugfs file for WOW 

This can be used to force WOW for cards that
are not present in the supported PCI ID list.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Sujith Manoharan 2015-01-30 19:05:30 +05:30 committed by Kalle Valo
parent e094c3375c
commit 8b86171508
3 changed files with 71 additions and 2 deletions
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1
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -1044,6 +1044,7 @@ struct ath_softc {
#ifdef CONFIG_ATH9K_WOW
u32 wow_intr_before_sleep;
bool force_wow;
#endif
};

68
drivers/net/wireless/ath/ath9k/debug.c
View File

@ -1043,6 +1043,69 @@ static const struct file_operations fops_ackto = {
};
#endif
#ifdef CONFIG_ATH9K_WOW
static ssize_t read_file_wow(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
unsigned int len = 0, size = 32;
ssize_t retval;
char *buf;
buf = kzalloc(size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
len += scnprintf(buf + len, size - len, "WOW: %s\n",
sc->force_wow ? "ENABLED" : "DISABLED");
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static ssize_t write_file_wow(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
unsigned long val;
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 (kstrtoul(buf, 0, &val))
return -EINVAL;
if (val != 1)
return -EINVAL;
if (!sc->force_wow) {
sc->force_wow = true;
ath9k_init_wow(sc->hw);
}
return count;
}
static const struct file_operations fops_wow = {
.read = read_file_wow,
.write = write_file_wow,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#endif
static ssize_t read_file_tpc(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@ -1313,6 +1376,11 @@ int ath9k_init_debug(struct ath_hw *ah)
&fops_btcoex);
#endif
#ifdef CONFIG_ATH9K_WOW
debugfs_create_file("wow", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_wow);
#endif
#ifdef CONFIG_ATH9K_DYNACK
debugfs_create_file("ack_to", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_ackto);

4
drivers/net/wireless/ath/ath9k/wow.c
View File

@ -327,7 +327,7 @@ void ath9k_init_wow(struct ieee80211_hw *hw)
{
struct ath_softc *sc = hw->priv;
if (sc->driver_data & ATH9K_PCI_WOW) {
if ((sc->driver_data & ATH9K_PCI_WOW) || sc->force_wow) {
hw->wiphy->wowlan = &ath9k_wowlan_support;
device_init_wakeup(sc->dev, 1);
}
@ -337,6 +337,6 @@ void ath9k_deinit_wow(struct ieee80211_hw *hw)
{
struct ath_softc *sc = hw->priv;
if (sc->driver_data & ATH9K_PCI_WOW)
if ((sc->driver_data & ATH9K_PCI_WOW) || sc->force_wow)
device_init_wakeup(sc->dev, 0);
}