cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of Samsung's ARM based
s3c24xx platform to drivers/cpufreq.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/Kconfig

@@ -2053,53 +2053,6 @@ menu "CPU Power Management"
 
 if ARCH_HAS_CPUFREQ
 source "drivers/cpufreq/Kconfig"
-
-config CPU_FREQ_S3C
-	bool
-	help
-	  Internal configuration node for common cpufreq on Samsung SoC
-
-config CPU_FREQ_S3C24XX
-	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
-	depends on ARCH_S3C24XX && CPU_FREQ
-	select CPU_FREQ_S3C
-	help
-	  This enables the CPUfreq driver for the Samsung S3C24XX family
-	  of CPUs.
-
-	  For details, take a look at <file:Documentation/cpu-freq>.
-
-	  If in doubt, say N.
-
-config CPU_FREQ_S3C24XX_PLL
-	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
-	depends on CPU_FREQ_S3C24XX
-	help
-	  Compile in support for changing the PLL frequency from the
-	  S3C24XX series CPUfreq driver. The PLL takes time to settle
-	  after a frequency change, so by default it is not enabled.
-
-	  This also means that the PLL tables for the selected CPU(s) will
-	  be built which may increase the size of the kernel image.
-
-config CPU_FREQ_S3C24XX_DEBUG
-	bool "Debug CPUfreq Samsung driver core"
-	depends on CPU_FREQ_S3C24XX
-	help
-	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
-
-config CPU_FREQ_S3C24XX_IODEBUG
-	bool "Debug CPUfreq Samsung driver IO timing"
-	depends on CPU_FREQ_S3C24XX
-	help
-	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
-
-config CPU_FREQ_S3C24XX_DEBUGFS
-	bool "Export debugfs for CPUFreq"
-	depends on CPU_FREQ_S3C24XX && DEBUG_FS
-	help
-	  Export status information via debugfs.
-
 endif
 
 source "drivers/cpuidle/Kconfig"

arch/arm/mach-s3c24xx/Kconfig

@@ -28,7 +28,7 @@ config CPU_S3C2410
 	select CPU_ARM920T
 	select CPU_LLSERIAL_S3C2410
 	select S3C2410_CLOCK
-	select S3C2410_CPUFREQ if CPU_FREQ_S3C24XX
+	select ARM_S3C2410_CPUFREQ if ARM_S3C24XX_CPUFREQ
 	select S3C2410_PM if PM
 	select SAMSUNG_HRT
 	help
@@ -204,18 +204,29 @@ config S3C24XX_GPIO_EXTRA128
 	  Add an extra 128 gpio numbers to the available GPIO pool. This is
 	  available for boards that need extra gpios for external devices.
 
+config S3C24XX_PLL
+	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
+	depends on ARM_S3C24XX
+	help
+	  Compile in support for changing the PLL frequency from the
+	  S3C24XX series CPUfreq driver. The PLL takes time to settle
+	  after a frequency change, so by default it is not enabled.
+
+	  This also means that the PLL tables for the selected CPU(s) will
+	  be built which may increase the size of the kernel image.
+
 # cpu frequency items common between s3c2410 and s3c2440/s3c2442
 
 config S3C2410_IOTIMING
 	bool
-	depends on CPU_FREQ_S3C24XX
+	depends on ARM_S3C24XX_CPUFREQ
 	help
 	  Internal node to select io timing code that is common to the s3c2410
 	  and s3c2440/s3c2442 cpu frequency support.
 
 config S3C2410_CPUFREQ_UTILS
        bool
-	depends on CPU_FREQ_S3C24XX
+       depends on ARM_S3C24XX_CPUFREQ
        help
          Internal node to select timing code that is common to the s3c2410
          and s3c2440/s3c244 cpu frequency support.
@@ -224,7 +235,7 @@ config S3C2410_CPUFREQ_UTILS
 
 config S3C2412_IOTIMING
 	bool
-	depends on CPU_FREQ_S3C24XX && (CPU_S3C2412 || CPU_S3C2443)
+	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2412 || CPU_S3C2443)
 	help
 	  Intel node to select io timing code that is common to the s3c2412
 	  and the s3c2443.
@@ -233,16 +244,9 @@ config S3C2412_IOTIMING
 
 if CPU_S3C2410
 
-config S3C2410_CPUFREQ
-	bool
-	depends on CPU_FREQ_S3C24XX
-	select S3C2410_CPUFREQ_UTILS
-	help
-	  CPU Frequency scaling support for S3C2410
-
 config S3C2410_PLL
 	bool
-	depends on S3C2410_CPUFREQ && CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2410_CPUFREQ && S3C24XX_PLL
 	default y
 	help
 	  Select the PLL table for the S3C2410
@@ -278,7 +282,7 @@ config ARCH_BAST
 	bool "Simtec Electronics BAST (EB2410ITX)"
 	select ISA
 	select MACH_BAST_IDE
-	select S3C2410_IOTIMING if S3C2410_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2410_CPUFREQ
 	select S3C24XX_DCLK
 	select S3C24XX_SIMTEC_NOR
 	select S3C24XX_SIMTEC_PM if PM
@@ -385,14 +389,6 @@ config CPU_S3C2412_ONLY
 		   !CPU_S3C2442 && !CPU_S3C2443
 	default y
 
-config S3C2412_CPUFREQ
-	bool
-	depends on CPU_FREQ_S3C24XX
-	default y
-	select S3C2412_IOTIMING
-	help
-	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
-
 config S3C2412_DMA
 	bool
 	help
@@ -494,14 +490,6 @@ endif	# CPU_S3C2416
 
 if CPU_S3C2440
 
-config S3C2440_CPUFREQ
-	bool "S3C2440/S3C2442 CPU Frequency scaling support"
-	depends on CPU_FREQ_S3C24XX && (CPU_S3C2440 || CPU_S3C2442)
-	default y
-	select S3C2410_CPUFREQ_UTILS
-	help
-	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
-
 config S3C2440_DMA
 	bool
 	help
@@ -521,15 +509,15 @@ config S3C2440_XTAL_16934400
 
 config S3C2440_PLL_12000000
 	bool
-	depends on S3C2440_CPUFREQ && S3C2440_XTAL_12000000
-	default y if CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2440_CPUFREQ && S3C2440_XTAL_12000000
+	default y if S3C24XX_PLL
 	help
 	  PLL tables for S3C2440 or S3C2442 CPUs with 12MHz crystals.
 
 config S3C2440_PLL_16934400
 	bool
-	depends on S3C2440_CPUFREQ && S3C2440_XTAL_16934400
-	default y if CPU_FREQ_S3C24XX_PLL
+	depends on ARM_S3C2440_CPUFREQ && S3C2440_XTAL_16934400
+	default y if S3C24XX_PLL
 	help
 	  PLL tables for S3C2440 or S3C2442 CPUs with 16.934MHz crystals.
 
@@ -583,7 +571,7 @@ config MACH_NEXCODER_2440
 
 config MACH_OSIRIS
 	bool "Simtec IM2440D20 (OSIRIS) module"
-	select S3C2410_IOTIMING if S3C2440_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_12000000
 	select S3C24XX_DCLK
 	select S3C24XX_GPIO_EXTRA128
@@ -655,7 +643,7 @@ config MACH_RX1950
 	bool "HP iPAQ rx1950"
 	select I2C
 	select PM_H1940 if PM
-	select S3C2410_IOTIMING if S3C2440_CPUFREQ
+	select S3C2410_IOTIMING if ARM_S3C2440_CPUFREQ
 	select S3C2440_XTAL_16934400
 	select S3C24XX_DCLK
 	select S3C24XX_PWM

arch/arm/mach-s3c24xx/Makefile

@@ -17,13 +17,11 @@ obj-				:=
 obj-y				+= common.o
 
 obj-$(CONFIG_CPU_S3C2410)	+= s3c2410.o
-obj-$(CONFIG_S3C2410_CPUFREQ)	+= cpufreq-s3c2410.o
 obj-$(CONFIG_S3C2410_DMA)	+= dma-s3c2410.o
 obj-$(CONFIG_S3C2410_PLL)	+= pll-s3c2410.o
 obj-$(CONFIG_S3C2410_PM)	+= pm-s3c2410.o sleep-s3c2410.o
 
 obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o clock-s3c2412.o
-obj-$(CONFIG_S3C2412_CPUFREQ)	+= cpufreq-s3c2412.o
 obj-$(CONFIG_S3C2412_DMA)	+= dma-s3c2412.o
 obj-$(CONFIG_S3C2412_PM)	+= pm-s3c2412.o
 obj-$(CONFIG_S3C2412_PM_SLEEP)	+= sleep-s3c2412.o
@@ -34,7 +32,6 @@ obj-$(CONFIG_S3C2416_PM)	+= pm-s3c2416.o
 obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o clock-s3c2440.o
 obj-$(CONFIG_CPU_S3C2442)	+= s3c2442.o
 obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o clock-s3c244x.o
-obj-$(CONFIG_S3C2440_CPUFREQ)	+= cpufreq-s3c2440.o
 obj-$(CONFIG_S3C2440_DMA)	+= dma-s3c2440.o
 obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
 obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
@@ -59,9 +56,6 @@ obj-$(CONFIG_S3C2412_IOTIMING)	+= iotiming-s3c2412.o
 obj-$(CONFIG_S3C2443_COMMON)	+= common-s3c2443.o
 obj-$(CONFIG_S3C2443_DMA)	+= dma-s3c2443.o
 
-obj-$(CONFIG_CPU_FREQ_S3C24XX)	+= cpufreq.o
-obj-$(CONFIG_CPU_FREQ_S3C24XX_DEBUGFS) += cpufreq-debugfs.o
-
 #
 # machine support
 # following is ordered alphabetically by option text.

arch/arm/mach-s3c24xx/iotiming-s3c2412.c

@@ -31,7 +31,7 @@
 #include <plat/cpu-freq-core.h>
 #include <plat/clock.h>
 
-#include "s3c2412.h"
+#include <mach/s3c2412.h>
 
 #define print_ns(x) ((x) / 10), ((x) % 10)
 

arch/arm/plat-samsung/include/plat/cpu-freq-core.h

@@ -202,7 +202,7 @@ extern int s3c_plltab_register(struct cpufreq_frequency_table *plls,
 extern struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void);
 extern struct s3c_iotimings *s3c_cpufreq_getiotimings(void);
 
-#ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUGFS
+#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS
 #define s3c_cpufreq_debugfs_call(x) x
 #else
 #define s3c_cpufreq_debugfs_call(x) NULL
@@ -259,17 +259,17 @@ extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg,
 #define s3c2412_iotiming_set NULL
 #endif /* CONFIG_S3C2412_IOTIMING */
 
-#ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUG
+#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG
 #define s3c_freq_dbg(x...) printk(KERN_INFO x)
 #else
 #define s3c_freq_dbg(x...) do { if (0) printk(x); } while (0)
-#endif /* CONFIG_CPU_FREQ_S3C24XX_DEBUG */
+#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_DEBUG */
 
-#ifdef CONFIG_CPU_FREQ_S3C24XX_IODEBUG
+#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG
 #define s3c_freq_iodbg(x...) printk(KERN_INFO x)
 #else
 #define s3c_freq_iodbg(x...) do { if (0) printk(x); } while (0)
-#endif /* CONFIG_CPU_FREQ_S3C24XX_IODEBUG */
+#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_IODEBUG */
 
 static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table,
 				      int index, size_t table_size,

arch/arm/plat-samsung/include/plat/cpu-freq.h

@@ -126,7 +126,7 @@ struct s3c_cpufreq_board {
 };
 
 /* Things depending on frequency scaling. */
-#ifdef CONFIG_CPU_FREQ_S3C
+#ifdef CONFIG_ARM_S3C_CPUFREQ
 #define __init_or_cpufreq
 #else
 #define __init_or_cpufreq __init
@@ -134,7 +134,7 @@ struct s3c_cpufreq_board {
 
 /* Board functions */
 
-#ifdef CONFIG_CPU_FREQ_S3C
+#ifdef CONFIG_ARM_S3C_CPUFREQ
 extern int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board);
 #else
 
@@ -142,4 +142,4 @@ static inline int s3c_cpufreq_setboard(struct s3c_cpufreq_board *board)
 {
 	return 0;
 }
-#endif  /* CONFIG_CPU_FREQ_S3C */
+#endif  /* CONFIG_ARM_S3C_CPUFREQ */

drivers/cpufreq/Kconfig.arm

@@ -95,6 +95,56 @@ config ARM_OMAP2PLUS_CPUFREQ
 	default ARCH_OMAP2PLUS
 	select CPU_FREQ_TABLE
 
+config ARM_S3C_CPUFREQ
+	bool
+	help
+	  Internal configuration node for common cpufreq on Samsung SoC
+
+config ARM_S3C24XX_CPUFREQ
+	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
+	depends on ARCH_S3C24XX
+	select ARM_S3C_CPUFREQ
+	help
+	  This enables the CPUfreq driver for the Samsung S3C24XX family
+	  of CPUs.
+
+	  For details, take a look at <file:Documentation/cpu-freq>.
+
+	  If in doubt, say N.
+
+config ARM_S3C24XX_CPUFREQ_DEBUG
+	bool "Debug CPUfreq Samsung driver core"
+	depends on ARM_S3C24XX_CPUFREQ
+	help
+	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
+
+config ARM_S3C24XX_CPUFREQ_IODEBUG
+	bool "Debug CPUfreq Samsung driver IO timing"
+	depends on ARM_S3C24XX_CPUFREQ
+	help
+	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
+
+config ARM_S3C24XX_CPUFREQ_DEBUGFS
+	bool "Export debugfs for CPUFreq"
+	depends on ARM_S3C24XX_CPUFREQ && DEBUG_FS
+	help
+	  Export status information via debugfs.
+
+config ARM_S3C2410_CPUFREQ
+	bool
+	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2410
+	select S3C2410_CPUFREQ_UTILS
+	help
+	  CPU Frequency scaling support for S3C2410
+
+config ARM_S3C2412_CPUFREQ
+	bool
+	depends on ARM_S3C24XX_CPUFREQ && CPU_S3C2412
+	default y
+	select S3C2412_IOTIMING
+	help
+	  CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
+
 config ARM_S3C2416_CPUFREQ
 	bool "S3C2416 CPU Frequency scaling support"
 	depends on CPU_S3C2416
@@ -117,6 +167,14 @@ config ARM_S3C2416_CPUFREQ_VCORESCALE
 
 	  If in doubt, say N.
 
+config ARM_S3C2440_CPUFREQ
+	bool "S3C2440/S3C2442 CPU Frequency scaling support"
+	depends on ARM_S3C24XX_CPUFREQ && (CPU_S3C2440 || CPU_S3C2442)
+	select S3C2410_CPUFREQ_UTILS
+	default y
+	help
+	  CPU Frequency scaling support for S3C2440 and S3C2442 SoC CPUs.
+
 config ARM_S3C64XX_CPUFREQ
 	bool "Samsung S3C64XX"
 	depends on CPU_S3C6410

drivers/cpufreq/Makefile

@@ -65,7 +65,12 @@ obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ)	+= omap-cpufreq.o
 obj-$(CONFIG_PXA25x)			+= pxa2xx-cpufreq.o
 obj-$(CONFIG_PXA27x)			+= pxa2xx-cpufreq.o
 obj-$(CONFIG_PXA3xx)			+= pxa3xx-cpufreq.o
+obj-$(CONFIG_ARM_S3C24XX_CPUFREQ)	+= s3c24xx-cpufreq.o
+obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o
+obj-$(CONFIG_ARM_S3C2410_CPUFREQ)	+= s3c2410-cpufreq.o
+obj-$(CONFIG_ARM_S3C2412_CPUFREQ)	+= s3c2412-cpufreq.o
 obj-$(CONFIG_ARM_S3C2416_CPUFREQ)	+= s3c2416-cpufreq.o
+obj-$(CONFIG_ARM_S3C2440_CPUFREQ)	+= s3c2440-cpufreq.o
 obj-$(CONFIG_ARM_S3C64XX_CPUFREQ)	+= s3c64xx-cpufreq.o
 obj-$(CONFIG_ARM_S5PV210_CPUFREQ)	+= s5pv210-cpufreq.o
 obj-$(CONFIG_ARM_SA1100_CPUFREQ)	+= sa1100-cpufreq.o

arch/arm/mach-s3c24xx/cpufreq-s3c2412.c → drivers/cpufreq/s3c2412-cpufreq.c

@@ -25,13 +25,12 @@
 #include <asm/mach/map.h>
 
 #include <mach/regs-clock.h>
+#include <mach/s3c2412.h>
 
 #include <plat/cpu.h>
 #include <plat/clock.h>
 #include <plat/cpu-freq-core.h>
 
-#include "s3c2412.h"
-
 /* our clock resources. */
 static struct clk *xtal;
 static struct clk *fclk;