[PATCH RFC 5/5] ARM: s5pv210: Migrate clock handling to Common ClockFramework
From: Mateusz Krawczuk
Date: Mon Aug 26 2013 - 07:39:44 EST
This patch migrates the s5pv210 platform to use new clock driver
using Common Clock Framework.
Signed-off-by: Mateusz Krawczuk <m.krawczuk@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-s5pv210/Kconfig | 9 +++++++++
arch/arm/mach-s5pv210/Makefile | 4 ++--
arch/arm/mach-s5pv210/common.c | 22 ++++++++++++++++++++++
arch/arm/mach-s5pv210/common.h | 13 +++++++++++++
arch/arm/mach-s5pv210/mach-aquila.c | 1 +
arch/arm/mach-s5pv210/mach-goni.c | 3 ++-
arch/arm/mach-s5pv210/mach-smdkc110.c | 1 +
arch/arm/mach-s5pv210/mach-smdkv210.c | 1 +
arch/arm/mach-s5pv210/mach-torbreck.c | 1 +
arch/arm/plat-samsung/Kconfig | 2 +-
arch/arm/plat-samsung/init.c | 2 --
11 files changed, 53 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index caaedaf..ad4546e 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -15,6 +15,7 @@ config CPU_S5PV210
select S5P_PM if PM
select S5P_SLEEP if PM
select SAMSUNG_DMADEV
+ select S5P_CLOCK if !COMMON_CLK
help
Enable S5PV210 CPU support
@@ -69,6 +70,14 @@ config S5PV210_SETUP_USB_PHY
help
Common setup code for USB PHY controller
+config COMMON_CLK_S5PV210
+ bool "Common Clock Framework support"
+ default y
+ select COMMON_CLK
+ help
+ Enable this option to use new clock driver
+ based on Common Clock Framework.
+
menu "S5PC110 Machines"
config MACH_AQUILA
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index 1c4e419..0c67fe2 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -12,8 +12,8 @@ obj- :=
# Core
-obj-y += common.o clock.o
-
+obj-y += common.o
+obj-$(CONFIG_S5P_CLOCK) += clock.o
obj-$(CONFIG_PM) += pm.o
obj-y += dma.o
diff --git a/arch/arm/mach-s5pv210/common.c b/arch/arm/mach-s5pv210/common.c
index 26027a2..3c3dd05 100644
--- a/arch/arm/mach-s5pv210/common.c
+++ b/arch/arm/mach-s5pv210/common.c
@@ -34,7 +34,13 @@
#include <mach/regs-clock.h>
#include <plat/cpu.h>
+
+#ifdef CONFIG_S5P_CLOCK
#include <plat/clock.h>
+#else
+#include <linux/clk-provider.h>
+#endif
+
#include <plat/devs.h>
#include <plat/sdhci.h>
#include <plat/adc-core.h>
@@ -50,6 +56,19 @@
#include "common.h"
+/* External clock frequency */
+static unsigned long xxti_f, xusbxti_f;
+
+void __init s5pv210_set_xxti_freq(unsigned long freq)
+{
+ xxti_f = freq;
+}
+
+void __init s5pv210_set_xusbxti_freq(unsigned long freq)
+{
+ xusbxti_f = freq;
+}
+
static const char name_s5pv210[] = "S5PV210/S5PC110";
static struct cpu_table cpu_ids[] __initdata = {
@@ -229,12 +248,14 @@ void __init s5pv210_map_io(void)
void __init s5pv210_init_clocks(int xtal)
{
+#ifdef CONFIG_S5P_CLOCK
printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
s3c24xx_register_baseclocks(xtal);
s5p_register_clocks(xtal);
s5pv210_register_clocks();
s5pv210_setup_clocks();
+#endif
}
void __init s5pv210_init_irq(void)
@@ -248,6 +269,7 @@ void __init s5pv210_init_irq(void)
vic[3] = ~0;
s5p_init_irq(vic, ARRAY_SIZE(vic));
+ s5pv210_clk_init(NULL, xxti_f, xusbxti_f, S3C_VA_SYS);
}
struct bus_type s5pv210_subsys = {
diff --git a/arch/arm/mach-s5pv210/common.h b/arch/arm/mach-s5pv210/common.h
index fe1beb5..2db2a15 100644
--- a/arch/arm/mach-s5pv210/common.h
+++ b/arch/arm/mach-s5pv210/common.h
@@ -14,6 +14,19 @@
#include <linux/reboot.h>
+void s5pv210_set_xxti_freq(unsigned long freq);
+void s5pv210_set_xusbxti_freq(unsigned long freq);
+
+#ifdef CONFIG_COMMON_CLK_S5PV210
+void s5pv210_clk_init(struct device_node *np,
+ unsigned long xxti_f, unsigned long xusbxti_f,
+ void __iomem *reg_base);
+#else
+static inline void s5pv210_clk_init(struct device_node *np,
+ unsigned long xxti_f, unsigned long xusbxti_f,
+ void __iomem *reg_base) {}
+#endif
+
void s5pv210_init_io(struct map_desc *mach_desc, int size);
void s5pv210_init_irq(void);
diff --git a/arch/arm/mach-s5pv210/mach-aquila.c b/arch/arm/mach-s5pv210/mach-aquila.c
index ad40ab0..e37a311 100644
--- a/arch/arm/mach-s5pv210/mach-aquila.c
+++ b/arch/arm/mach-s5pv210/mach-aquila.c
@@ -646,6 +646,7 @@ static void __init aquila_map_io(void)
{
s5pv210_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
+ s5pv210_set_xusbxti_freq(24000000);
s3c24xx_init_uarts(aquila_uartcfgs, ARRAY_SIZE(aquila_uartcfgs));
samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
}
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 309b5ad..a306c3b 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -946,7 +946,8 @@ static void __init goni_sound_init(void)
static void __init goni_map_io(void)
{
s5pv210_init_io(NULL, 0);
- s3c24xx_init_clocks(clk_xusbxti.rate);
+ s3c24xx_init_clocks(24000000);
+ s5pv210_set_xusbxti_freq(24000000);
s3c24xx_init_uarts(goni_uartcfgs, ARRAY_SIZE(goni_uartcfgs));
samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
}
diff --git a/arch/arm/mach-s5pv210/mach-smdkc110.c b/arch/arm/mach-s5pv210/mach-smdkc110.c
index 7c0ed07..89563ed 100644
--- a/arch/arm/mach-s5pv210/mach-smdkc110.c
+++ b/arch/arm/mach-s5pv210/mach-smdkc110.c
@@ -119,6 +119,7 @@ static void __init smdkc110_map_io(void)
{
s5pv210_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
+ s5pv210_set_xusbxti_freq(24000000);
s3c24xx_init_uarts(smdkv210_uartcfgs, ARRAY_SIZE(smdkv210_uartcfgs));
samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
}
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c
index 6d72bb99..ff4a470 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -285,6 +285,7 @@ static void __init smdkv210_map_io(void)
{
s5pv210_init_io(NULL, 0);
s3c24xx_init_clocks(clk_xusbxti.rate);
+ s5pv210_set_xusbxti_freq(24000000);
s3c24xx_init_uarts(smdkv210_uartcfgs, ARRAY_SIZE(smdkv210_uartcfgs));
samsung_set_timer_source(SAMSUNG_PWM2, SAMSUNG_PWM4);
}
diff --git a/arch/arm/mach-s5pv210/mach-torbreck.c b/arch/arm/mach-s5pv210/mach-torbreck.c
index 579afe8..c131cd2 100644
--- a/arch/arm/mach-s5pv210/mach-torbreck.c
+++ b/arch/arm/mach-s5pv210/mach-torbreck.c
@@ -105,6 +105,7 @@ static void __init torbreck_map_io(void)
{
s5pv210_init_io(NULL, 0);
s3c24xx_init_clocks(24000000);
+ s5pv210_set_xusbxti_freq(24000000);
s3c24xx_init_uarts(torbreck_uartcfgs, ARRAY_SIZE(torbreck_uartcfgs));
samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
}
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 7dfba93..2a98613 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -91,7 +91,7 @@ config SAMSUNG_CLKSRC
used by newer systems such as the S3C64XX.
config S5P_CLOCK
- def_bool (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210)
+ def_bool (ARCH_S5P64X0 || ARCH_S5PC100)
help
Support common clock part for ARCH_S5P and ARCH_EXYNOS SoCs
diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
index 50a3ea0..915e87f 100644
--- a/arch/arm/plat-samsung/init.c
+++ b/arch/arm/plat-samsung/init.c
@@ -63,7 +63,6 @@ void __init s3c_init_cpu(unsigned long idcode,
if (cpu->map_io)
cpu->map_io();
}
-
/* s3c24xx_init_clocks
*
* Initialise the clock subsystem and associated information from the
@@ -86,7 +85,6 @@ void __init s3c24xx_init_clocks(int xtal)
else
(cpu->init_clocks)(xtal);
}
-
/* uart management */
#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS)
static int nr_uarts __initdata = 0;
--
1.8.1.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/