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Commit 8b861715 authored by Sujith Manoharan's avatar Sujith Manoharan Committed by Kalle Valo
Browse files

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: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent e094c337

drivers/net/wireless/ath/ath9k/ath9k.h

+1 −0
Original line number Diff line number Diff line
@@ -1044,6 +1044,7 @@ struct ath_softc { 


#ifdef CONFIG_ATH9K_WOW

	u32 wow_intr_before_sleep;

	bool force_wow;

#endif

};

drivers/net/wireless/ath/ath9k/debug.c

+68 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/wireless/ath/ath9k/wow.c

+2 −2
Original line number Diff line number Diff line
@@ -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);

}