3 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index 94359b1a861..3bec6f3b1c7 100644
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -276,6 +276,7 @@ struct wl1271_debugfs {
 
         struct dentry *retry_count;
         struct dentry *excessive_retries;
+        struct dentry *gpio_power;
 };
 
 #define NUM_TX_QUEUES              4
@@ -442,6 +443,8 @@ struct wl1271 {
         struct conf_drv_settings conf;
 
         struct list_head list;
+
+        bool gpio_power;
 };
 
 int wl1271_plt_start(struct wl1271 *wl);
diff --git a/drivers/net/wireless/wl12xx/wl1271_debugfs.c b/drivers/net/wireless/wl12xx/wl1271_debugfs.c
index c1805e5f896..4eaf40c5756 100644
--- a/drivers/net/wireless/wl12xx/wl1271_debugfs.c
+++ b/drivers/net/wireless/wl12xx/wl1271_debugfs.c
@@ -237,6 +237,57 @@ 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;
+        int res;
+        char buf[10];
+
+        res = scnprintf(buf, sizeof(buf), "%d\n", wl->gpio_power);
+
+        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;
+        }
+
+        wl->set_power(!!value);
+        wl->gpio_power = !!value;
+
+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 +384,8 @@ 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 +487,8 @@ 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);
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 147aab22235..b33bdcc1eb4 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -399,11 +399,13 @@ static void wl1271_disable_interrupts(struct wl1271 *wl)
 static void wl1271_power_off(struct wl1271 *wl)
 {
         wl->set_power(false);
+        wl->gpio_power = false;
 }
 
 static void wl1271_power_on(struct wl1271 *wl)
 {
         wl->set_power(true);
+        wl->gpio_power = true;
 }
 
 static void wl1271_fw_status(struct wl1271 *wl,
@@ -1923,6 +1925,7 @@ static int __devinit wl1271_probe(struct spi_device *spi)
         wl->band = IEEE80211_BAND_2GHZ;
         wl->vif = NULL;
         wl->joined = false;
+        wl->gpio_power = false;
 
         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
                 wl->tx_frames[i] = NULL;