From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 drivers/clk/mxs/clk.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 drivers/clk/mxs/clk.c

(limited to 'drivers/clk/mxs/clk.c')

diff --git a/drivers/clk/mxs/clk.c b/drivers/clk/mxs/clk.c
new file mode 100644
index 000000000..5301bce89
--- /dev/null
+++ b/drivers/clk/mxs/clk.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
+#include <linux/spinlock.h>
+#include "clk.h"
+
+DEFINE_SPINLOCK(mxs_lock);
+
+int mxs_clk_wait(void __iomem *reg, u8 shift)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(10);
+
+	while (readl_relaxed(reg) & (1 << shift))
+		if (time_after(jiffies, timeout))
+			return -ETIMEDOUT;
+
+	return 0;
+}
-- 
cgit v1.2.3-54-g00ecf