MIPS: Loongson 2: Sort out clock managment.

For unexplainable reasons the Loongson 2 clock API was implemented in a
module so fixing this involved shifting large amounts of code around.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 21 insertions, 173 deletions

diff --git a/arch/mips/kernel/cpufreq/Makefile b/arch/mips/kernel/cpufreq/Makefile
index c3479a432efe..05a5715ee38c 100644
--- a/arch/mips/kernel/cpufreq/Makefile
+++ b/arch/mips/kernel/cpufreq/Makefile
@@ -2,4 +2,4 @@
 # Makefile for the Linux/MIPS cpufreq.
 #
 
-obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o loongson2_clock.o
+obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
diff --git a/arch/mips/kernel/cpufreq/loongson2_clock.c b/arch/mips/kernel/cpufreq/loongson2_clock.c
deleted file mode 100644
index 5426779d9fdb..000000000000
--- a/arch/mips/kernel/cpufreq/loongson2_clock.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Copyright (C) 2006 - 2008 Lemote Inc. & Insititute of Computing Technology
- * Author: Yanhua, yanh@lemote.com
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/module.h>
-#include <linux/cpufreq.h>
-#include <linux/platform_device.h>
-
-#include <asm/clock.h>
-
-#include <loongson.h>
-
-static LIST_HEAD(clock_list);
-static DEFINE_SPINLOCK(clock_lock);
-static DEFINE_MUTEX(clock_list_sem);
-
-/* Minimum CLK support */
-enum {
-	DC_ZERO, DC_25PT = 2, DC_37PT, DC_50PT, DC_62PT, DC_75PT,
-	DC_87PT, DC_DISABLE, DC_RESV
-};
-
-struct cpufreq_frequency_table loongson2_clockmod_table[] = {
-	{DC_RESV, CPUFREQ_ENTRY_INVALID},
-	{DC_ZERO, CPUFREQ_ENTRY_INVALID},
-	{DC_25PT, 0},
-	{DC_37PT, 0},
-	{DC_50PT, 0},
-	{DC_62PT, 0},
-	{DC_75PT, 0},
-	{DC_87PT, 0},
-	{DC_DISABLE, 0},
-	{DC_RESV, CPUFREQ_TABLE_END},
-};
-EXPORT_SYMBOL_GPL(loongson2_clockmod_table);
-
-static struct clk cpu_clk = {
-	.name = "cpu_clk",
-	.flags = CLK_ALWAYS_ENABLED | CLK_RATE_PROPAGATES,
-	.rate = 800000000,
-};
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
-	return &cpu_clk;
-}
-EXPORT_SYMBOL(clk_get);
-
-static void propagate_rate(struct clk *clk)
-{
-	struct clk *clkp;
-
-	list_for_each_entry(clkp, &clock_list, node) {
-		if (likely(clkp->parent != clk))
-			continue;
-		if (likely(clkp->ops && clkp->ops->recalc))
-			clkp->ops->recalc(clkp);
-		if (unlikely(clkp->flags & CLK_RATE_PROPAGATES))
-			propagate_rate(clkp);
-	}
-}
-
-int clk_enable(struct clk *clk)
-{
-	return 0;
-}
-EXPORT_SYMBOL(clk_enable);
-
-void clk_disable(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_disable);
-
-unsigned long clk_get_rate(struct clk *clk)
-{
-	return (unsigned long)clk->rate;
-}
-EXPORT_SYMBOL(clk_get_rate);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
-	return clk_set_rate_ex(clk, rate, 0);
-}
-EXPORT_SYMBOL_GPL(clk_set_rate);
-
-int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
-{
-	int ret = 0;
-	int regval;
-	int i;
-
-	if (likely(clk->ops && clk->ops->set_rate)) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&clock_lock, flags);
-		ret = clk->ops->set_rate(clk, rate, algo_id);
-		spin_unlock_irqrestore(&clock_lock, flags);
-	}
-
-	if (unlikely(clk->flags & CLK_RATE_PROPAGATES))
-		propagate_rate(clk);
-
-	for (i = 0; loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END;
-	     i++) {
-		if (loongson2_clockmod_table[i].frequency ==
-		    CPUFREQ_ENTRY_INVALID)
-			continue;
-		if (rate == loongson2_clockmod_table[i].frequency)
-			break;
-	}
-	if (rate != loongson2_clockmod_table[i].frequency)
-		return -ENOTSUPP;
-
-	clk->rate = rate;
-
-	regval = LOONGSON_CHIPCFG0;
-	regval = (regval & ~0x7) | (loongson2_clockmod_table[i].index - 1);
-	LOONGSON_CHIPCFG0 = regval;
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(clk_set_rate_ex);
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
-	if (likely(clk->ops && clk->ops->round_rate)) {
-		unsigned long flags, rounded;
-
-		spin_lock_irqsave(&clock_lock, flags);
-		rounded = clk->ops->round_rate(clk, rate);
-		spin_unlock_irqrestore(&clock_lock, flags);
-
-		return rounded;
-	}
-
-	return rate;
-}
-EXPORT_SYMBOL_GPL(clk_round_rate);
-
-/*
- * This is the simple version of Loongson-2 wait, Maybe we need do this in
- * interrupt disabled content
- */
-
-DEFINE_SPINLOCK(loongson2_wait_lock);
-void loongson2_cpu_wait(void)
-{
-	u32 cpu_freq;
-	unsigned long flags;
-
-	spin_lock_irqsave(&loongson2_wait_lock, flags);
-	cpu_freq = LOONGSON_CHIPCFG0;
-	LOONGSON_CHIPCFG0 &= ~0x7;	/* Put CPU into wait mode */
-	LOONGSON_CHIPCFG0 = cpu_freq;	/* Restore CPU state */
-	spin_unlock_irqrestore(&loongson2_wait_lock, flags);
-}
-EXPORT_SYMBOL_GPL(loongson2_cpu_wait);
-
-MODULE_AUTHOR("Yanhua <yanh@lemote.com>");
-MODULE_DESCRIPTION("cpufreq driver for Loongson 2F");
-MODULE_LICENSE("GPL");
diff --git a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c b/arch/mips/kernel/cpufreq/loongson2_cpufreq.c
index ae5db206347c..e7c98e2b78b6 100644
--- a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c
+++ b/arch/mips/kernel/cpufreq/loongson2_cpufreq.c
@@ -19,7 +19,7 @@
 
 #include <asm/clock.h>
 
-#include <loongson.h>
+#include <asm/mach-loongson/loongson.h>
 
 static uint nowait;
 
@@ -181,6 +181,25 @@ static struct platform_driver platform_driver = {
 	.id_table = platform_device_ids,
 };
 
+/*
+ * This is the simple version of Loongson-2 wait, Maybe we need do this in
+ * interrupt disabled context.
+ */
+
+static DEFINE_SPINLOCK(loongson2_wait_lock);
+
+static void loongson2_cpu_wait(void)
+{
+	unsigned long flags;
+	u32 cpu_freq;
+
+	spin_lock_irqsave(&loongson2_wait_lock, flags);
+	cpu_freq = LOONGSON_CHIPCFG0;
+	LOONGSON_CHIPCFG0 &= ~0x7;      /* Put CPU into wait mode */
+	LOONGSON_CHIPCFG0 = cpu_freq;   /* Restore CPU state */
+	spin_unlock_irqrestore(&loongson2_wait_lock, flags);
+}
+
 static int __init cpufreq_init(void)
 {
 	int ret;