[PATCH v4 4/7] ARM: Exynos: allow dt based discovery of mct controller using clocksource_of_init
Thomas Abraham
thomas.abraham at linaro.org
Mon Jan 21 05:02:19 EST 2013
Add entries to __clksrc_of_table so that Exynos MCT controller is discoverable
using call to clocksource_of_init. With this change, it would be appropriate to
rename the function 'exynos4_timer_init' as 'mct_init' since it aptly describes
this function. Additionally, the 'init_time' callback of all machine descriptors
for exynos platforms that were previously set to 'exynos4_timer_init' are now
set to either 'mct_init' or 'clocksource_of_init'.
Signed-off-by: Thomas Abraham <thomas.abraham at linaro.org>
---
arch/arm/mach-exynos/Kconfig | 2 ++
arch/arm/mach-exynos/common.h | 2 +-
arch/arm/mach-exynos/mach-armlex4210.c | 2 +-
arch/arm/mach-exynos/mach-exynos4-dt.c | 3 ++-
arch/arm/mach-exynos/mach-exynos5-dt.c | 3 ++-
arch/arm/mach-exynos/mach-nuri.c | 2 +-
arch/arm/mach-exynos/mach-origen.c | 2 +-
arch/arm/mach-exynos/mach-smdk4x12.c | 4 ++--
arch/arm/mach-exynos/mach-smdkv310.c | 4 ++--
arch/arm/mach-exynos/mct.c | 12 ++++++------
10 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index e103c29..8bdeaa5 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -416,6 +416,7 @@ config MACH_EXYNOS4_DT
select PINCTRL
select PINCTRL_EXYNOS4
select USE_OF
+ select CLKSRC_OF
help
Machine support for Samsung Exynos4 machine with device tree enabled.
Select this if a fdt blob is available for the Exynos4 SoC based board.
@@ -428,6 +429,7 @@ config MACH_EXYNOS5_DT
depends on ARCH_EXYNOS5
select ARM_AMBA
select USE_OF
+ select CLKSRC_OF
help
Machine support for Samsung EXYNOS5 machine with device tree enabled.
Select this if a fdt blob is available for the EXYNOS5 SoC based board.
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 3ab3c03..be3ea62 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -12,7 +12,7 @@
#ifndef __ARCH_ARM_MACH_EXYNOS_COMMON_H
#define __ARCH_ARM_MACH_EXYNOS_COMMON_H
-extern void exynos4_timer_init(void);
+extern void mct_init(void);
struct map_desc;
void exynos_init_io(struct map_desc *mach_desc, int size);
diff --git a/arch/arm/mach-exynos/mach-armlex4210.c b/arch/arm/mach-exynos/mach-armlex4210.c
index 2f18130..27b51d2 100644
--- a/arch/arm/mach-exynos/mach-armlex4210.c
+++ b/arch/arm/mach-exynos/mach-armlex4210.c
@@ -204,6 +204,6 @@ MACHINE_START(ARMLEX4210, "ARMLEX4210")
.handle_irq = gic_handle_irq,
.init_machine = armlex4210_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
index 2a2c96a..6a75e96 100644
--- a/arch/arm/mach-exynos/mach-exynos4-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -13,6 +13,7 @@
#include <linux/of_platform.h>
#include <linux/serial_core.h>
+#include <linux/clocksource.h>
#include <asm/mach/arch.h>
#include <asm/hardware/gic.h>
@@ -111,7 +112,7 @@ DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
.init_early = exynos_firmware_init,
.init_machine = exynos4_dt_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = clocksource_of_init,
.dt_compat = exynos4_dt_compat,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
index 4e074c6..39563ce 100644
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
@@ -14,6 +14,7 @@
#include <linux/serial_core.h>
#include <linux/memblock.h>
#include <linux/io.h>
+#include <linux/clocksource.h>
#include <asm/mach/arch.h>
#include <asm/hardware/gic.h>
@@ -182,7 +183,7 @@ DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
.handle_irq = gic_handle_irq,
.init_machine = exynos5_dt_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = clocksource_of_init,
.dt_compat = exynos5_dt_compat,
.restart = exynos5_restart,
.reserve = exynos5_reserve,
diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c
index dccd1d1..e4a7ae5 100644
--- a/arch/arm/mach-exynos/mach-nuri.c
+++ b/arch/arm/mach-exynos/mach-nuri.c
@@ -1382,7 +1382,7 @@ MACHINE_START(NURI, "NURI")
.handle_irq = gic_handle_irq,
.init_machine = nuri_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.reserve = &nuri_reserve,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-origen.c b/arch/arm/mach-exynos/mach-origen.c
index 4e11563..16a7019 100644
--- a/arch/arm/mach-exynos/mach-origen.c
+++ b/arch/arm/mach-exynos/mach-origen.c
@@ -817,7 +817,7 @@ MACHINE_START(ORIGEN, "ORIGEN")
.handle_irq = gic_handle_irq,
.init_machine = origen_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.reserve = &origen_reserve,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-smdk4x12.c b/arch/arm/mach-exynos/mach-smdk4x12.c
index e9c9c29..a66e916e 100644
--- a/arch/arm/mach-exynos/mach-smdk4x12.c
+++ b/arch/arm/mach-exynos/mach-smdk4x12.c
@@ -378,7 +378,7 @@ MACHINE_START(SMDK4212, "SMDK4212")
.map_io = smdk4x12_map_io,
.handle_irq = gic_handle_irq,
.init_machine = smdk4x12_machine_init,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.restart = exynos4_restart,
.reserve = &smdk4x12_reserve,
MACHINE_END
@@ -393,7 +393,7 @@ MACHINE_START(SMDK4412, "SMDK4412")
.handle_irq = gic_handle_irq,
.init_machine = smdk4x12_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.restart = exynos4_restart,
.reserve = &smdk4x12_reserve,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-smdkv310.c b/arch/arm/mach-exynos/mach-smdkv310.c
index b228ab9..ecf4723 100644
--- a/arch/arm/mach-exynos/mach-smdkv310.c
+++ b/arch/arm/mach-exynos/mach-smdkv310.c
@@ -425,7 +425,7 @@ MACHINE_START(SMDKV310, "SMDKV310")
.map_io = smdkv310_map_io,
.handle_irq = gic_handle_irq,
.init_machine = smdkv310_machine_init,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END
@@ -439,7 +439,7 @@ MACHINE_START(SMDKC210, "SMDKC210")
.handle_irq = gic_handle_irq,
.init_machine = smdkv310_machine_init,
.init_late = exynos_init_late,
- .init_time = exynos4_timer_init,
+ .init_time = mct_init,
.reserve = &smdkv310_reserve,
.restart = exynos4_restart,
MACHINE_END
diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c
index 2942bee..1d3c3f4 100644
--- a/arch/arm/mach-exynos/mct.c
+++ b/arch/arm/mach-exynos/mct.c
@@ -22,6 +22,7 @@
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
+#include <linux/clocksource.h>
#include <asm/arch_timer.h>
#include <asm/hardware/gic.h>
@@ -518,17 +519,12 @@ static const struct of_device_id exynos_mct_ids[] = {
{ .compatible = "samsung,exynos4412-mct", .data = (void *)MCT_INT_PPI },
};
-void __init exynos4_timer_init(void)
+void __init mct_init(void)
{
struct device_node *np = NULL;
const struct of_device_id *match;
u32 nr_irqs, i;
- if (soc_is_exynos5440()) {
- arch_timer_of_register();
- return;
- }
-
#ifdef CONFIG_OF
np = of_find_matching_node_and_match(NULL, exynos_mct_ids, &match);
#endif
@@ -561,3 +557,7 @@ void __init exynos4_timer_init(void)
exynos4_clocksource_init();
exynos4_clockevent_init();
}
+#ifdef CONFIG_CLKSRC_OF
+CLOCKSOURCE_OF_DECLARE(exynos4210, "samsung,exynos4210-mct", mct_init)
+CLOCKSOURCE_OF_DECLARE(exynos4412, "samsung,exynos4412-mct", mct_init)
+#endif
--
1.7.5.4
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