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path: root/drivers/net/wireless/ti/wlcore/debugfs.c
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Diffstat (limited to 'drivers/net/wireless/ti/wlcore/debugfs.c')
-rw-r--r--drivers/net/wireless/ti/wlcore/debugfs.c77
1 files changed, 61 insertions, 16 deletions
diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index eb43f94a1..7f672f687 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -1205,26 +1205,11 @@ err_out:
static loff_t dev_mem_seek(struct file *file, loff_t offset, int orig)
{
- loff_t ret;
-
/* only requests of dword-aligned size and offset are supported */
if (offset % 4)
return -EINVAL;
- switch (orig) {
- case SEEK_SET:
- file->f_pos = offset;
- ret = file->f_pos;
- break;
- case SEEK_CUR:
- file->f_pos += offset;
- ret = file->f_pos;
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
+ return no_seek_end_llseek(file, offset, orig);
}
static const struct file_operations dev_mem_ops = {
@@ -1234,6 +1219,65 @@ static const struct file_operations dev_mem_ops = {
.llseek = dev_mem_seek,
};
+static ssize_t fw_logger_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.fwlog.output);
+}
+
+static ssize_t fw_logger_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, 0, &value);
+ if (ret < 0) {
+ wl1271_warning("illegal value in fw_logger");
+ return -EINVAL;
+ }
+
+ if ((value > 2) || (value == 0)) {
+ wl1271_warning("fw_logger value must be 1-UART 2-SDIO");
+ return -ERANGE;
+ }
+
+ if (wl->conf.fwlog.output == 0) {
+ wl1271_warning("iligal opperation - fw logger disabled by default, please change mode via wlconf");
+ return -EINVAL;
+ }
+
+ mutex_lock(&wl->mutex);
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0) {
+ count = ret;
+ goto out;
+ }
+
+ wl->conf.fwlog.output = value;
+
+ ret = wl12xx_cmd_config_fwlog(wl);
+
+ wl1271_ps_elp_sleep(wl);
+
+out:
+ mutex_unlock(&wl->mutex);
+ return count;
+}
+
+static const struct file_operations fw_logger_ops = {
+ .open = simple_open,
+ .read = fw_logger_read,
+ .write = fw_logger_write,
+ .llseek = default_llseek,
+};
+
static int wl1271_debugfs_add_files(struct wl1271 *wl,
struct dentry *rootdir)
{
@@ -1260,6 +1304,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
DEBUGFS_ADD(irq_timeout, rootdir);
DEBUGFS_ADD(fw_stats_raw, rootdir);
DEBUGFS_ADD(sleep_auth, rootdir);
+ DEBUGFS_ADD(fw_logger, rootdir);
streaming = debugfs_create_dir("rx_streaming", rootdir);
if (!streaming || IS_ERR(streaming))