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mwifiex: add debugfs file for testing reset of card

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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>
This commit is contained in:
Amitkumar Karwar 2015-12-14 04:15:10 -08:00 committed by Kalle Valo
parent 47f336d7e0
commit 76ae3e26ea
1 changed files with 30 additions and 0 deletions
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30
drivers/net/wireless/marvell/mwifiex/debugfs.c
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@ -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);
}
/*