clk: hip04: add clock driver

Now only fixed rate clocks are appended into the clock driver.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>

drivers/clk/hisilicon/clk-hip04.c

@@ -0,0 +1,54 @@
+/*
+ * Hisilicon HiP04 clock driver
+ *
+ * Copyright (c) 2013-2014 Hisilicon Limited.
+ * Copyright (c) 2013-2014 Linaro Limited.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+
+#include <dt-bindings/clock/hip04-clock.h>
+
+#include "clk.h"
+
+/* fixed rate clocks */
+static struct hisi_fixed_rate_clock hip04_fixed_rate_clks[] __initdata = {
+	{ HIP04_OSC50M,   "osc50m",   NULL, CLK_IS_ROOT, 50000000, },
+	{ HIP04_CLK_50M,  "clk50m",   NULL, CLK_IS_ROOT, 50000000, },
+	{ HIP04_CLK_168M, "clk168m",  NULL, CLK_IS_ROOT, 168750000, },
+};
+
+static void __init hip04_clk_init(struct device_node *np)
+{
+	hisi_clk_init(np, HIP04_NR_CLKS);
+
+	hisi_clk_register_fixed_rate(hip04_fixed_rate_clks,
+				     ARRAY_SIZE(hip04_fixed_rate_clks),
+				     NULL);
+}
+CLK_OF_DECLARE(hip04_clk, "hisilicon,hip04-clock", hip04_clk_init);