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>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 803a7d4..20216c5 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -1044,6 +1044,7 @@
#ifdef CONFIG_ATH9K_WOW
u32 wow_intr_before_sleep;
+ bool force_wow;
#endif
};
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index dd5d391..50a2e0a 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1043,6 +1043,69 @@
};
#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 @@
&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);
diff --git a/drivers/net/wireless/ath/ath9k/wow.c b/drivers/net/wireless/ath/ath9k/wow.c
index d4cfbc3..4b3b565 100644
--- a/drivers/net/wireless/ath/ath9k/wow.c
+++ b/drivers/net/wireless/ath/ath9k/wow.c
@@ -327,7 +327,7 @@
{
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 @@
{
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);
}