]> git.karo-electronics.de Git - linux-beck.git/commitdiff
mwifiex: add debugfs file for testing reset of card
authorAmitkumar Karwar <akarwar@marvell.com>
Mon, 14 Dec 2015 12:15:10 +0000 (04:15 -0800)
committerKalle Valo <kvalo@codeaurora.org>
Wed, 30 Dec 2015 14:58:01 +0000 (16:58 +0200)
This provides an option for user to power cycle the card.
It will be used to change the firmware without actually
rebooting the system.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/marvell/mwifiex/debugfs.c

index 9824d8dd2b4447f11304557a44f3c7ea2d629d76..5e5562909d9f1edfb3c62e173fac9e6a6b0f3ccc 100644 (file)
@@ -906,6 +906,34 @@ mwifiex_timeshare_coex_write(struct file *file, const char __user *ubuf,
                return count;
 }
 
+static ssize_t
+mwifiex_reset_write(struct file *file,
+                   const char __user *ubuf, size_t count, loff_t *ppos)
+{
+       struct mwifiex_private *priv = file->private_data;
+       struct mwifiex_adapter *adapter = priv->adapter;
+       char cmd;
+       bool result;
+
+       if (copy_from_user(&cmd, ubuf, sizeof(cmd)))
+               return -EFAULT;
+
+       if (strtobool(&cmd, &result))
+               return -EINVAL;
+
+       if (!result)
+               return -EINVAL;
+
+       if (adapter->if_ops.card_reset) {
+               dev_info(adapter->dev, "Resetting per request\n");
+               adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
+               mwifiex_cancel_all_pending_cmd(adapter);
+               adapter->if_ops.card_reset(adapter);
+       }
+
+       return count;
+}
+
 #define MWIFIEX_DFS_ADD_FILE(name) do {                                 \
        if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir,        \
                        priv, &mwifiex_dfs_##name##_fops))              \
@@ -943,6 +971,7 @@ MWIFIEX_DFS_FILE_OPS(hscfg);
 MWIFIEX_DFS_FILE_OPS(histogram);
 MWIFIEX_DFS_FILE_OPS(debug_mask);
 MWIFIEX_DFS_FILE_OPS(timeshare_coex);
+MWIFIEX_DFS_FILE_WRITE_OPS(reset);
 
 /*
  * This function creates the debug FS directory structure and the files.
@@ -970,6 +999,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
        MWIFIEX_DFS_ADD_FILE(histogram);
        MWIFIEX_DFS_ADD_FILE(debug_mask);
        MWIFIEX_DFS_ADD_FILE(timeshare_coex);
+       MWIFIEX_DFS_ADD_FILE(reset);
 }
 
 /*