1 files changed, 63 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_debugfs.c b/drivers/net/wireless/wl12xx/wl1271_debugfs.c
index c1805e5f8964..3f7ff8d0cf5a 100644
--- a/drivers/net/wireless/wl12xx/wl1271_debugfs.c
+++ b/drivers/net/wireless/wl12xx/wl1271_debugfs.c
@@ -24,6 +24,7 @@
 #include "wl1271_debugfs.h"
 
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 
 #include "wl1271.h"
 #include "wl1271_acx.h"
@@ -237,6 +238,64 @@ static const struct file_operations tx_queue_len_ops = {
         .open = wl1271_open_file_generic,
 };
 
+static ssize_t gpio_power_read(struct file *file, char __user *user_buf,
+                          size_t count, loff_t *ppos)
+{
+        struct wl1271 *wl = file->private_data;
+        bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
+
+        int res;
+        char buf[10];
+
+        res = scnprintf(buf, sizeof(buf), "%d\n", state);
+
+        return simple_read_from_buffer(user_buf, count, ppos, buf, res);
+}
+
+static ssize_t gpio_power_write(struct file *file,
+                           const char __user *user_buf,
+                           size_t count, loff_t *ppos)
+{
+        struct wl1271 *wl = file->private_data;
+        char buf[10];
+        size_t len;
+        unsigned long value;
+        int ret;
+
+        mutex_lock(&wl->mutex);
+
+        len = min(count, sizeof(buf) - 1);
+        if (copy_from_user(buf, user_buf, len)) {
+                ret = -EFAULT;
+                goto out;
+        }
+        buf[len] = '\0';
+
+        ret = strict_strtoul(buf, 0, &value);
+        if (ret < 0) {
+                wl1271_warning("illegal value in gpio_power");
+                goto out;
+        }
+
+        if (value) {
+                wl->set_power(true);
+                set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
+        } else {
+                wl->set_power(false);
+                clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
+        }
+
+out:
+        mutex_unlock(&wl->mutex);
+        return count;
+}
+
+static const struct file_operations gpio_power_ops = {
+        .read = gpio_power_read,
+        .write = gpio_power_write,
+        .open = wl1271_open_file_generic
+};
+
 static void wl1271_debugfs_delete_files(struct wl1271 *wl)
 {
         DEBUGFS_FWSTATS_DEL(tx, internal_desc_overflow);
@@ -333,6 +392,8 @@ static void wl1271_debugfs_delete_files(struct wl1271 *wl)
         DEBUGFS_DEL(tx_queue_len);
         DEBUGFS_DEL(retry_count);
         DEBUGFS_DEL(excessive_retries);
+
+        DEBUGFS_DEL(gpio_power);
 }
 
 static int wl1271_debugfs_add_files(struct wl1271 *wl)
@@ -434,6 +495,8 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl)
         DEBUGFS_ADD(retry_count, wl->debugfs.rootdir);
         DEBUGFS_ADD(excessive_retries, wl->debugfs.rootdir);
 
+        DEBUGFS_ADD(gpio_power, wl->debugfs.rootdir);
+
 out:
         if (ret < 0)
                 wl1271_debugfs_delete_files(wl);