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>

arch/mips/include/asm/clock.h

@@ -50,15 +50,4 @@ void clk_recalc_rate(struct clk *);
 int clk_register(struct clk *);
 void clk_unregister(struct clk *);
 
-/* the exported API, in addition to clk_set_rate */
-/**
- * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
- * @clk: clock source
- * @rate: desired clock rate in Hz
- * @algo_id: algorithm id to be passed down to ops->set_rate
- *
- * Returns success (0) or negative errno.
- */
-int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
-
 #endif				/* __ASM_MIPS_CLOCK_H */

arch/mips/include/asm/mach-loongson/loongson.h

@@ -245,7 +245,6 @@ static inline void do_perfcnt_IRQ(void)
 
 #ifdef CONFIG_CPU_SUPPORTS_CPUFREQ
 #include <linux/cpufreq.h>
-extern void loongson2_cpu_wait(void);
 extern struct cpufreq_frequency_table loongson2_clockmod_table[];
 
 /* Chip Config */

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

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;

arch/mips/loongson/Kconfig

@@ -41,6 +41,7 @@ config LEMOTE_MACH2F
 	select CSRC_R4K if ! MIPS_EXTERNAL_TIMER
 	select DMA_NONCOHERENT
 	select GENERIC_ISA_DMA_SUPPORT_BROKEN
+	select HAVE_CLK
 	select HW_HAS_PCI
 	select I8259
 	select IRQ_CPU

arch/mips/loongson/lemote-2f/Makefile

@@ -2,7 +2,7 @@
 # Makefile for lemote loongson2f family machines
 #
 
-obj-y += machtype.o irq.o reset.o ec_kb3310b.o
+obj-y += clock.o machtype.o irq.o reset.o ec_kb3310b.o
 
 #
 # Suspend Support

arch/mips/kernel/cpufreq/loongson2_clock.c → arch/mips/loongson/lemote-2f/clock.c

@@ -6,14 +6,17 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-
-#include <linux/module.h>
+#include <linux/clk.h>
 #include <linux/cpufreq.h>
-#include <linux/platform_device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
 
 #include <asm/clock.h>
-
-#include <loongson.h>
+#include <asm/mach-loongson/loongson.h>
 
 static LIST_HEAD(clock_list);
 static DEFINE_SPINLOCK(clock_lock);
@@ -88,12 +91,6 @@ 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;
@@ -103,7 +100,7 @@ int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
 		unsigned long flags;
 
 		spin_lock_irqsave(&clock_lock, flags);
-		ret = clk->ops->set_rate(clk, rate, algo_id);
+		ret = clk->ops->set_rate(clk, rate, 0);
 		spin_unlock_irqrestore(&clock_lock, flags);
 	}
 
@@ -129,7 +126,7 @@ int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(clk_set_rate_ex);
+EXPORT_SYMBOL_GPL(clk_set_rate);
 
 long clk_round_rate(struct clk *clk, unsigned long rate)
 {
@@ -146,26 +143,3 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
 	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");