ARM: sirf: use clocksource_of infrastructure

This moves the two sirf clocksource drivers to drivers/clocksource
and integrates them into the framework for locating the clock sources
automatically.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Barry Song <Baohua.Song@csr.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/arm/mach-prima2/Makefile b/arch/arm/mach-prima2/Makefile
index 5fdff7e..52ac738 100644 (file)
--- a/arch/arm/mach-prima2/Makefile
+++ b/arch/arm/mach-prima2/Makefile
@@ -6,5 +6,3 @@ obj-$(CONFIG_CACHE_L2X0) += l2x0.o
 obj-$(CONFIG_SUSPEND) += pm.o sleep.o
 obj-$(CONFIG_SMP) += platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)  += hotplug.o
-obj-$(CONFIG_ARCH_PRIMA2) += timer-prima2.o
-obj-$(CONFIG_ARCH_MARCO) += timer-marco.o

diff --git a/arch/arm/mach-prima2/common.c b/arch/arm/mach-prima2/common.c
index 31f43ea..4f94cd8 100644 (file)
--- a/arch/arm/mach-prima2/common.c
+++ b/arch/arm/mach-prima2/common.c
@@ -6,6 +6,7 @@
  * Licensed under GPLv2 or later.
  */
 
+#include <linux/clocksource.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/irqchip.h>
@@ -31,6 +32,13 @@ void __init sirfsoc_init_late(void)
        sirfsoc_pm_init();
 }
 
+static __init void sirfsoc_init_time(void)
+{
+       /* initialize clocking early, we want to set the OS timer */
+       sirfsoc_of_clk_init();
+       clocksource_of_init();
+}
+
 static __init void sirfsoc_map_io(void)
 {
        sirfsoc_map_lluart();
@@ -48,7 +56,7 @@ DT_MACHINE_START(ATLAS6_DT, "Generic ATLAS6 (Flattened Device Tree)")
        .nr_irqs        = 128,
        .map_io         = sirfsoc_map_io,
        .init_irq       = irqchip_init,
-       .init_time      = sirfsoc_prima2_timer_init,
+       .init_time      = sirfsoc_init_time,
        .init_machine   = sirfsoc_mach_init,
        .init_late      = sirfsoc_init_late,
        .dt_compat      = atlas6_dt_match,
@@ -67,7 +75,7 @@ DT_MACHINE_START(PRIMA2_DT, "Generic PRIMA2 (Flattened Device Tree)")
        .nr_irqs        = 128,
        .map_io         = sirfsoc_map_io,
        .init_irq       = irqchip_init,
-       .init_time      = sirfsoc_prima2_timer_init,
+       .init_time      = sirfsoc_init_time,
        .dma_zone_size  = SZ_256M,
        .init_machine   = sirfsoc_mach_init,
        .init_late      = sirfsoc_init_late,
@@ -87,7 +95,7 @@ DT_MACHINE_START(MARCO_DT, "Generic MARCO (Flattened Device Tree)")
        .smp            = smp_ops(sirfsoc_smp_ops),
        .map_io         = sirfsoc_map_io,
        .init_irq       = irqchip_init,
-       .init_time      = sirfsoc_marco_timer_init,
+       .init_time      = sirfsoc_init_time,
        .init_machine   = sirfsoc_mach_init,
        .init_late      = sirfsoc_init_late,
        .dt_compat      = marco_dt_match,

diff --git a/arch/arm/mach-prima2/common.h b/arch/arm/mach-prima2/common.h
index b7c26b6..54262cf 100644 (file)
--- a/arch/arm/mach-prima2/common.h
+++ b/arch/arm/mach-prima2/common.h
@@ -13,9 +13,6 @@
 #include <asm/mach/time.h>
 #include <asm/exception.h>
 
-extern void sirfsoc_prima2_timer_init(void);
-extern void sirfsoc_marco_timer_init(void);
-
 extern struct smp_operations   sirfsoc_smp_ops;
 extern void sirfsoc_secondary_startup(void);
 extern void sirfsoc_cpu_die(unsigned int cpu);

diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 4d8283a..5e2176f 100644 (file)
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -16,6 +16,8 @@ obj-$(CONFIG_CLKSRC_NOMADIK_MTU)      += nomadik-mtu.o
 obj-$(CONFIG_CLKSRC_DBX500_PRCMU)      += clksrc-dbx500-prcmu.o
 obj-$(CONFIG_ARMADA_370_XP_TIMER)      += time-armada-370-xp.o
 obj-$(CONFIG_ARCH_BCM2835)     += bcm2835_timer.o
+obj-$(CONFIG_ARCH_MARCO)       += timer-marco.o
+obj-$(CONFIG_ARCH_PRIMA2)      += timer-prima2.o
 obj-$(CONFIG_SUNXI_TIMER)      += sunxi_timer.o
 obj-$(CONFIG_ARCH_TEGRA)       += tegra20_timer.o
 obj-$(CONFIG_VT8500_TIMER)     += vt8500_timer.o

diff --git a/arch/arm/mach-prima2/timer-marco.c b/drivers/clocksource/timer-marco.c
similarity index 94%
rename from arch/arm/mach-prima2/timer-marco.c
rename to drivers/clocksource/timer-marco.c
index f4eea2e..97738db 100644 (file)
--- a/arch/arm/mach-prima2/timer-marco.c
+++ b/drivers/clocksource/timer-marco.c
@@ -21,8 +21,6 @@
 #include <asm/localtimer.h>
 #include <asm/mach/time.h>
 
-#include "common.h"
-
 #define SIRFSOC_TIMER_32COUNTER_0_CTRL                 0x0000
 #define SIRFSOC_TIMER_32COUNTER_1_CTRL                 0x0004
 #define SIRFSOC_TIMER_MATCH_0                          0x0018
@@ -53,7 +51,6 @@ static const u32 sirfsoc_timer_reg_list[SIRFSOC_TIMER_REG_CNT] = {
 static u32 sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT];
 
 static void __iomem *sirfsoc_timer_base;
-static void __init sirfsoc_of_timer_map(void);
 
 /* disable count and interrupt */
 static inline void sirfsoc_timer_count_disable(int idx)
@@ -242,15 +239,12 @@ static void __init sirfsoc_clockevent_init(void)
 }
 
 /* initialize the kernel jiffy timer source */
-void __init sirfsoc_marco_timer_init(void)
+static void __init sirfsoc_marco_timer_init(void)
 {
        unsigned long rate;
        u32 timer_div;
        struct clk *clk;
 
-       /* initialize clocking early, we want to set the OS timer */
-       sirfsoc_of_clk_init();
-
        /* timer's input clock is io clock */
        clk = clk_get_sys("io", NULL);
 
@@ -260,8 +254,6 @@ void __init sirfsoc_marco_timer_init(void)
        BUG_ON(rate < CLOCK_TICK_RATE);
        BUG_ON(rate % CLOCK_TICK_RATE);
 
-       sirfsoc_of_timer_map();
-
        /* Initialize the timer dividers */
        timer_div = rate / CLOCK_TICK_RATE - 1;
        writel_relaxed(timer_div << 16, sirfsoc_timer_base + SIRFSOC_TIMER_64COUNTER_CTRL);
@@ -286,18 +278,8 @@ void __init sirfsoc_marco_timer_init(void)
        sirfsoc_clockevent_init();
 }
 
-static struct of_device_id timer_ids[] = {
-       { .compatible = "sirf,marco-tick" },
-       {},
-};
-
-static void __init sirfsoc_of_timer_map(void)
+static void __init sirfsoc_of_timer_init(struct device_node *np)
 {
-       struct device_node *np;
-
-       np = of_find_matching_node(NULL, timer_ids);
-       if (!np)
-               return;
        sirfsoc_timer_base = of_iomap(np, 0);
        if (!sirfsoc_timer_base)
                panic("unable to map timer cpu registers\n");
@@ -312,5 +294,6 @@ static void __init sirfsoc_of_timer_map(void)
                panic("No irq passed for timer1 via DT\n");
 #endif
 
-       of_node_put(np);
+       sirfsoc_marco_timer_init();
 }
+CLOCKSOURCE_OF_DECLARE(sirfsoc_marco_timer, "sirf,marco-tick", sirfsoc_of_timer_init );

diff --git a/arch/arm/mach-prima2/timer-prima2.c b/drivers/clocksource/timer-prima2.c
similarity index 92%
rename from arch/arm/mach-prima2/timer-prima2.c
rename to drivers/clocksource/timer-prima2.c
index 9829083..7608826 100644 (file)
--- a/arch/arm/mach-prima2/timer-prima2.c
+++ b/drivers/clocksource/timer-prima2.c
@@ -18,12 +18,9 @@
 #include <linux/of.h>
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
-#include <mach/map.h>
 #include <asm/sched_clock.h>
 #include <asm/mach/time.h>
 
-#include "common.h"
-
 #define SIRFSOC_TIMER_COUNTER_LO       0x0000
 #define SIRFSOC_TIMER_COUNTER_HI       0x0004
 #define SIRFSOC_TIMER_MATCH_0          0x0008
@@ -56,7 +53,6 @@ static const u32 sirfsoc_timer_reg_list[SIRFSOC_TIMER_REG_CNT] = {
 static u32 sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT];
 
 static void __iomem *sirfsoc_timer_base;
-static void __init sirfsoc_of_timer_map(void);
 
 /* timer0 interrupt handler */
 static irqreturn_t sirfsoc_timer_interrupt(int irq, void *dev_id)
@@ -182,14 +178,11 @@ static void __init sirfsoc_clockevent_init(void)
 }
 
 /* initialize the kernel jiffy timer source */
-void __init sirfsoc_prima2_timer_init(void)
+static void __init sirfsoc_prima2_timer_init(struct device_node *np)
 {
        unsigned long rate;
        struct clk *clk;
 
-       /* initialize clocking early, we want to set the OS timer */
-       sirfsoc_of_clk_init();
-
        /* timer's input clock is io clock */
        clk = clk_get_sys("io", NULL);
 
@@ -200,7 +193,11 @@ void __init sirfsoc_prima2_timer_init(void)
        BUG_ON(rate < CLOCK_TICK_RATE);
        BUG_ON(rate % CLOCK_TICK_RATE);
 
-       sirfsoc_of_timer_map();
+       sirfsoc_timer_base = of_iomap(np, 0);
+       if (!sirfsoc_timer_base)
+               panic("unable to map timer cpu registers\n");
+
+       sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
 
        writel_relaxed(rate / CLOCK_TICK_RATE / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
        writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
@@ -215,25 +212,4 @@ void __init sirfsoc_prima2_timer_init(void)
 
        sirfsoc_clockevent_init();
 }
-
-static struct of_device_id timer_ids[] = {
-       { .compatible = "sirf,prima2-tick" },
-       {},
-};
-
-static void __init sirfsoc_of_timer_map(void)
-{
-       struct device_node *np;
-
-       np = of_find_matching_node(NULL, timer_ids);
-       if (!np)
-               return;
-       sirfsoc_timer_base = of_iomap(np, 0);
-       if (!sirfsoc_timer_base)
-               panic("unable to map timer cpu registers\n");
-
-       /* Get the interrupts property */
-       sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
-
-       of_node_put(np);
-}
+CLOCKSOURCE_OF_DECLARE(sirfsoc_prima2_timer, "sirf,prima2-tick", sirfsoc_prima2_timer_init);