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authorAmitkumar Karwar <akarwar@marvell.com>2010-07-08 06:43:48 +0530
committerJohn W. Linville <linville@tuxdriver.com>2010-07-12 16:05:31 -0400
commit1311843c58ca606bab8bfe4cf6c0fe50deb9986d (patch)
treef716fbf88c163e33ef622ecb5e9c1d37df006bc7 /drivers/net/wireless/libertas/debugfs.c
parent643f82e32f14faf0d0944c804203a6681b6b0a1e (diff)
libertas: Added support for host sleep feature
Existing "ethtool -s ethX wol X" command configures hostsleep parameters, but those are activated only during suspend/resume, there is no way to configure host sleep without actual suspend. This patch adds debugfs command to enable/disable host sleep based on already configured host sleep parameters using wol command. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Kiran Divekar <dkiran@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/libertas/debugfs.c')
-rw-r--r--drivers/net/wireless/libertas/debugfs.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 17367463c855..acaf81164624 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -124,6 +124,70 @@ out_unlock:
return ret;
}
+static ssize_t lbs_host_sleep_write(struct file *file,
+ const char __user *user_buf, size_t count,
+ loff_t *ppos)
+{
+ struct lbs_private *priv = file->private_data;
+ ssize_t buf_size, ret;
+ int host_sleep;
+ unsigned long addr = get_zeroed_page(GFP_KERNEL);
+ char *buf = (char *)addr;
+ if (!buf)
+ return -ENOMEM;
+
+ buf_size = min(count, len - 1);
+ if (copy_from_user(buf, user_buf, buf_size)) {
+ ret = -EFAULT;
+ goto out_unlock;
+ }
+ ret = sscanf(buf, "%d", &host_sleep);
+ if (ret != 1) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (host_sleep == 0)
+ ret = lbs_set_host_sleep(priv, 0);
+ else if (host_sleep == 1) {
+ if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
+ lbs_pr_info("wake parameters not configured");
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+ ret = lbs_set_host_sleep(priv, 1);
+ } else {
+ lbs_pr_err("invalid option\n");
+ ret = -EINVAL;
+ }
+
+ if (!ret)
+ ret = count;
+
+out_unlock:
+ free_page(addr);
+ return ret;
+}
+
+static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct lbs_private *priv = file->private_data;
+ ssize_t ret;
+ size_t pos = 0;
+ unsigned long addr = get_zeroed_page(GFP_KERNEL);
+ char *buf = (char *)addr;
+ if (!buf)
+ return -ENOMEM;
+
+ pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
+
+ ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
+
+ free_page(addr);
+ return ret;
+}
+
/*
* When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
* get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
@@ -675,6 +739,8 @@ static const struct lbs_debugfs_files debugfs_files[] = {
{ "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
{ "sleepparams", 0644, FOPS(lbs_sleepparams_read,
lbs_sleepparams_write), },
+ { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
+ lbs_host_sleep_write), },
};
static const struct lbs_debugfs_files debugfs_events_files[] = {