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

---
 arch/sh/kernel/cpu/clock-cpg.c | 78 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 arch/sh/kernel/cpu/clock-cpg.c

(limited to 'arch/sh/kernel/cpu/clock-cpg.c')

diff --git a/arch/sh/kernel/cpu/clock-cpg.c b/arch/sh/kernel/cpu/clock-cpg.c
new file mode 100644
index 000000000..8525a6712
--- /dev/null
+++ b/arch/sh/kernel/cpu/clock-cpg.c
@@ -0,0 +1,78 @@
+#include <linux/clk.h>
+#include <linux/compiler.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/clkdev.h>
+#include <asm/clock.h>
+
+static struct clk master_clk = {
+	.flags		= CLK_ENABLE_ON_INIT,
+	.rate		= CONFIG_SH_PCLK_FREQ,
+};
+
+static struct clk peripheral_clk = {
+	.parent		= &master_clk,
+	.flags		= CLK_ENABLE_ON_INIT,
+};
+
+static struct clk bus_clk = {
+	.parent		= &master_clk,
+	.flags		= CLK_ENABLE_ON_INIT,
+};
+
+static struct clk cpu_clk = {
+	.parent		= &master_clk,
+	.flags		= CLK_ENABLE_ON_INIT,
+};
+
+/*
+ * The ordering of these clocks matters, do not change it.
+ */
+static struct clk *onchip_clocks[] = {
+	&master_clk,
+	&peripheral_clk,
+	&bus_clk,
+	&cpu_clk,
+};
+
+static struct clk_lookup lookups[] = {
+	/* main clocks */
+	CLKDEV_CON_ID("master_clk", &master_clk),
+	CLKDEV_CON_ID("peripheral_clk", &peripheral_clk),
+	CLKDEV_CON_ID("bus_clk", &bus_clk),
+	CLKDEV_CON_ID("cpu_clk", &cpu_clk),
+};
+
+int __init __deprecated cpg_clk_init(void)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) {
+		struct clk *clk = onchip_clocks[i];
+		arch_init_clk_ops(&clk->ops, i);
+		if (clk->ops)
+			ret |= clk_register(clk);
+	}
+
+	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+	clk_add_alias("fck", "sh-tmu-sh3.0", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-tmu.0", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-tmu.1", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-tmu.2", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-mtu2", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-cmt-16.0", "peripheral_clk", NULL);
+	clk_add_alias("fck", "sh-cmt-32.0", "peripheral_clk", NULL);
+	clk_add_alias("sci_ick", NULL, "peripheral_clk", NULL);
+
+	return ret;
+}
+
+/*
+ * Placeholder for compatibility, until the lazy CPUs do this
+ * on their own.
+ */
+int __init __weak arch_clk_init(void)
+{
+	return cpg_clk_init();
+}
-- 
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