diff options
| -rw-r--r-- | drivers/usb/typec/ucsi/debugfs.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/usb/typec/ucsi/debugfs.c b/drivers/usb/typec/ucsi/debugfs.c index 924f93027553..90d11b79d2c0 100644 --- a/drivers/usb/typec/ucsi/debugfs.c +++ b/drivers/usb/typec/ucsi/debugfs.c @@ -110,6 +110,30 @@ static int ucsi_vbus_volt_show(struct seq_file *m, void *v) } DEFINE_SHOW_ATTRIBUTE(ucsi_vbus_volt); +static ssize_t ucsi_message_out_write(struct file *file, + const char __user *data, size_t count, loff_t *ppos) +{ + struct ucsi *ucsi = file->private_data; + int ret; + + char *buf __free(kfree) = memdup_user_nul(data, count); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + ucsi->message_out_size = min(count / 2, UCSI_MAX_MESSAGE_OUT_LENGTH); + ret = hex2bin(ucsi->message_out, buf, ucsi->message_out_size); + if (ret) + return ret; + + return count; +} + +static const struct file_operations ucsi_message_out_fops = { + .open = simple_open, + .write = ucsi_message_out_write, + .llseek = generic_file_llseek, +}; + void ucsi_debugfs_register(struct ucsi *ucsi) { ucsi->debugfs = kzalloc(sizeof(*ucsi->debugfs), GFP_KERNEL); @@ -122,6 +146,8 @@ void ucsi_debugfs_register(struct ucsi *ucsi) debugfs_create_file("peak_current", 0400, ucsi->debugfs->dentry, ucsi, &ucsi_peak_curr_fops); debugfs_create_file("avg_current", 0400, ucsi->debugfs->dentry, ucsi, &ucsi_avg_curr_fops); debugfs_create_file("vbus_voltage", 0400, ucsi->debugfs->dentry, ucsi, &ucsi_vbus_volt_fops); + debugfs_create_file("message_out", 0200, ucsi->debugfs->dentry, ucsi, + &ucsi_message_out_fops); } void ucsi_debugfs_unregister(struct ucsi *ucsi) |