[PATCH v3 6/9] ARM: S3C24XX: add platform code for conversion to the common clock framework

Heiko Stübner
2014-05-11T22:09:48Z

This adds the necessary init functions to init the clocks from the common
clock framework and necessary CONFIG_SAMSUNG_CLOCK ifdefs around the legacy
clock code.

This also includes empty stubs for the *_setup_clocks functions that are
called from the cpufreq driver on resume.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
---
arch/arm/mach-s3c24xx/Kconfig | 5 +++++
arch/arm/mach-s3c24xx/common.c | 25 +++++++++++++++++++++++++
arch/arm/mach-s3c24xx/common.h | 7 +++++++
arch/arm/mach-s3c24xx/s3c2410.c | 6 ++++++
arch/arm/mach-s3c24xx/s3c2442.c | 3 ++-
arch/arm/mach-s3c24xx/s3c244x.c | 6 ++++++
6 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index b4c055b..5c9cffd 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -18,6 +18,11 @@ config PLAT_S3C24XX
help
Base platform code for any Samsung S3C24XX device

+config S3C2410_COMMON_CLK
+ bool
+ help
+ Build the s3c2410 clock driver based on the common clock framework.
+
config S3C2410_COMMON_DCLK
bool
select REGMAP_MMIO
diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c
index 7cc6d94..35cf88e 100644
--- a/arch/arm/mach-s3c24xx/common.c
+++ b/arch/arm/mach-s3c24xx/common.c
@@ -53,6 +53,7 @@
#include <plat/cpu-freq.h>
#include <plat/pll.h>
#include <plat/pwm-core.h>
+#include <plat/watchdog-reset.h>

#include "common.h"

@@ -533,6 +534,14 @@ struct platform_device s3c2443_device_dma = {
};
#endif

+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2410)
+void __init s3c2410_init_clocks(int xtal)
+{
+ s3c2410_common_clk_init(NULL, xtal, 0, S3C24XX_VA_CLKPWR);
+ samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
#ifdef CONFIG_CPU_S3C2412
void __init s3c2412_init_clocks(int xtal)
{
@@ -547,6 +556,22 @@ void __init s3c2416_init_clocks(int xtal)
}
#endif

+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2440)
+void __init s3c2440_init_clocks(int xtal)
+{
+ s3c2410_common_clk_init(NULL, xtal, 1, S3C24XX_VA_CLKPWR);
+ samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
+#if defined(CONFIG_COMMON_CLK) && defined(CONFIG_CPU_S3C2442)
+void __init s3c2442_init_clocks(int xtal)
+{
+ s3c2410_common_clk_init(NULL, xtal, 2, S3C24XX_VA_CLKPWR);
+ samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
+}
+#endif
+
#ifdef CONFIG_CPU_S3C2443
void __init s3c2443_init_clocks(int xtal)
{
diff --git a/arch/arm/mach-s3c24xx/common.h b/arch/arm/mach-s3c24xx/common.h
index 50504c7..2d65541 100644
--- a/arch/arm/mach-s3c24xx/common.h
+++ b/arch/arm/mach-s3c24xx/common.h
@@ -77,6 +77,7 @@ extern void s3c244x_restart(enum reboot_mode mode, const char *cmd);
#ifdef CONFIG_CPU_S3C2440
extern int s3c2440_init(void);
extern void s3c2440_map_io(void);
+extern void s3c2440_init_clocks(int xtal);
extern void s3c2440_init_irq(void);
#else
#define s3c2440_init NULL
@@ -86,6 +87,7 @@ extern void s3c2440_init_irq(void);
#ifdef CONFIG_CPU_S3C2442
extern int s3c2442_init(void);
extern void s3c2442_map_io(void);
+extern void s3c2442_init_clocks(int xtal);
extern void s3c2442_init_irq(void);
#else
#define s3c2442_init NULL
@@ -116,6 +118,11 @@ extern struct platform_device s3c2443_device_dma;

extern struct platform_device s3c2410_device_dclk;

+#ifdef CONFIG_S3C2410_COMMON_CLK
+void __init s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,
+ int current_soc,
+ void __iomem *reg_base);
+#endif
#ifdef CONFIG_S3C2412_COMMON_CLK
void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f,
unsigned long ext_f, void __iomem *reg_base);
diff --git a/arch/arm/mach-s3c24xx/s3c2410.c b/arch/arm/mach-s3c24xx/s3c2410.c
index 04b58cb..5280173 100644
--- a/arch/arm/mach-s3c24xx/s3c2410.c
+++ b/arch/arm/mach-s3c24xx/s3c2410.c
@@ -83,6 +83,7 @@ void __init s3c2410_map_io(void)
iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
}

+#ifdef CONFIG_SAMSUNG_CLOCK
void __init_or_cpufreq s3c2410_setup_clocks(void)
{
struct clk *xtal_clk;
@@ -142,6 +143,11 @@ void __init s3c2410_init_clocks(int xtal)
clkdev_add_table(s3c2410_clk_lookup, ARRAY_SIZE(s3c2410_clk_lookup));
samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
}
+#else
+void __init_or_cpufreq s3c2410_setup_clocks(void)
+{
+}
+#endif

struct bus_type s3c2410_subsys = {
.name = "s3c2410-core",
diff --git a/arch/arm/mach-s3c24xx/s3c2442.c b/arch/arm/mach-s3c24xx/s3c2442.c
index 2c8adc0..564c6503 100644
--- a/arch/arm/mach-s3c24xx/s3c2442.c
+++ b/arch/arm/mach-s3c24xx/s3c2442.c
@@ -53,6 +53,7 @@

#include "common.h"

+#ifdef CONFIG_SAMSUNG_CLOCK
/* S3C2442 extended clock support */

static unsigned long s3c2442_camif_upll_round(struct clk *clk,
@@ -162,7 +163,7 @@ static __init int s3c2442_clk_init(void)
}

arch_initcall(s3c2442_clk_init);
-
+#endif

static struct device s3c2442_dev = {
.bus = &s3c2442_subsys,
diff --git a/arch/arm/mach-s3c24xx/s3c244x.c b/arch/arm/mach-s3c24xx/s3c244x.c
index 76b691b..1d665d5 100644
--- a/arch/arm/mach-s3c24xx/s3c244x.c
+++ b/arch/arm/mach-s3c24xx/s3c244x.c
@@ -78,6 +78,7 @@ void __init s3c244x_map_io(void)
s3c2410_device_dclk.name = "s3c2440-dclk";
}

+#ifdef CONFIG_SAMSUNG_CLOCK
void __init_or_cpufreq s3c244x_setup_clocks(void)
{
struct clk *xtal_clk;
@@ -138,6 +139,11 @@ void __init s3c244x_init_clocks(int xtal)
s3c2410_baseclk_add();
samsung_wdt_reset_init(S3C24XX_VA_WATCHDOG);
}
+#else
+void __init_or_cpufreq s3c244x_setup_clocks(void)
+{
+}
+#endif

/* Since the S3C2442 and S3C2440 share items, put both subsystems here */

--
1.9.0