@@ -133,6 +133,33 @@ static const struct file_operations mmc_ios_fops = {
.release = single_release,
};
+static int mmc_clock_opt_get(void *data, u64 *val)
+{
+ struct mmc_host *host = data;
+
+ *val = host->ios.clock;
+
+ return 0;
+}
+
+static int mmc_clock_opt_set(void *data, u64 val)
+{
+ struct mmc_host *host = data;
+
+ /* We need this check due to input value is u64 */
+ if (val > host->f_max)
+ return -EINVAL;
+
+ mmc_claim_host(host);
+ mmc_set_clock(host, (unsigned int) val);
+ mmc_release_host(host);
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set,
+ "%llu\n");
+
void mmc_add_host_debugfs(struct mmc_host *host)
{
struct dentry *root;
@@ -149,11 +176,15 @@ void mmc_add_host_debugfs(struct mmc_host *host)
host->debugfs_root = root;
if (!debugfs_create_file("ios", S_IRUSR, root, host, &mmc_ios_fops))
- goto err_ios;
+ goto err_node;
+
+ if (!debugfs_create_file("clock", S_IRUSR | S_IWUSR, root, host,
+ &mmc_clock_fops))
+ goto err_node;
return;
-err_ios:
+err_node:
debugfs_remove_recursive(root);
host->debugfs_root = NULL;
err_root: