wl12xx: add split_scan_timeout debugfs file

Add control over split_scan_timeout through
debugfs. Values are in ms while 0 will disable split scan.

Signed-off-by: Eyal Shapira <eyal@wizey.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
index f063c704ebcf..00dbe1595a7f 100644
--- a/drivers/net/wireless/wl12xx/debugfs.c
+++ b/drivers/net/wireless/wl12xx/debugfs.c
@@ -445,6 +445,48 @@ static const struct file_operations forced_ps_ops = {
         .llseek = default_llseek,
 };
 
+static ssize_t split_scan_timeout_read(struct file *file, char __user *user_buf,
+                          size_t count, loff_t *ppos)
+{
+        struct wl1271 *wl = file->private_data;
+
+        return wl1271_format_buffer(user_buf, count,
+                                    ppos, "%d\n",
+                                    wl->conf.scan.split_scan_timeout / 1000);
+}
+
+static ssize_t split_scan_timeout_write(struct file *file,
+                                    const char __user *user_buf,
+                                    size_t count, loff_t *ppos)
+{
+        struct wl1271 *wl = file->private_data;
+        unsigned long value;
+        int ret;
+
+        ret = kstrtoul_from_user(user_buf, count, 10, &value);
+        if (ret < 0) {
+                wl1271_warning("illegal value in split_scan_timeout");
+                return -EINVAL;
+        }
+
+        if (value == 0)
+                wl1271_info("split scan will be disabled");
+
+        mutex_lock(&wl->mutex);
+
+        wl->conf.scan.split_scan_timeout = value * 1000;
+
+        mutex_unlock(&wl->mutex);
+        return count;
+}
+
+static const struct file_operations split_scan_timeout_ops = {
+        .read = split_scan_timeout_read,
+        .write = split_scan_timeout_write,
+        .open = wl1271_open_file_generic,
+        .llseek = default_llseek,
+};
+
 static ssize_t driver_state_read(struct file *file, char __user *user_buf,
                                  size_t count, loff_t *ppos)
 {
@@ -1082,6 +1124,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
         DEBUGFS_ADD(beacon_filtering, rootdir);
         DEBUGFS_ADD(dynamic_ps_timeout, rootdir);
         DEBUGFS_ADD(forced_ps, rootdir);
+        DEBUGFS_ADD(split_scan_timeout, rootdir);
 
         streaming = debugfs_create_dir("rx_streaming", rootdir);
         if (!streaming || IS_ERR(streaming))