ARM: tegra: move timer.c to drivers/clocksource/

Move arch/arm/mach-tegra/timer.c to drivers/clocksource/tegra20_timer.c
so that the code is co-located with other clocksource drivers, and to
reduce the size of the mach-tegra directory.
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/Kconfig

@@ -642,6 +642,7 @@ config ARCH_TEGRA
 	select ARCH_HAS_CPUFREQ
 	select CLKDEV_LOOKUP
 	select CLKSRC_MMIO
+	select CLKSRC_OF
 	select COMMON_CLK
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_GPIO

arch/arm/mach-tegra/Makefile

@@ -2,7 +2,6 @@ obj-y                                   += common.o
 obj-y                                   += io.o
 obj-y                                   += irq.o
 obj-y                                   += clock.o
-obj-y                                   += timer.o
 obj-y					+= fuse.o
 obj-y					+= pmc.o
 obj-y					+= flowctrl.o

arch/arm/mach-tegra/board-dt-tegra20.c

@@ -15,6 +15,7 @@
  *
  */
 
+#include <linux/clocksource.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
@@ -203,7 +204,7 @@ DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
 	.init_early	= tegra20_init_early,
 	.init_irq	= tegra_dt_init_irq,
 	.handle_irq	= gic_handle_irq,
-	.init_time	= tegra_init_timer,
+	.init_time	= clocksource_of_init,
 	.init_machine	= tegra_dt_init,
 	.init_late	= tegra_dt_init_late,
 	.restart	= tegra_assert_system_reset,

arch/arm/mach-tegra/board-dt-tegra30.c

@@ -23,6 +23,7 @@
  *
  */
 
+#include <linux/clocksource.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
@@ -113,7 +114,7 @@ DT_MACHINE_START(TEGRA30_DT, "NVIDIA Tegra30 (Flattened Device Tree)")
 	.init_early	= tegra30_init_early,
 	.init_irq	= tegra_dt_init_irq,
 	.handle_irq	= gic_handle_irq,
-	.init_time	= tegra_init_timer,
+	.init_time	= clocksource_of_init,
 	.init_machine	= tegra30_dt_init,
 	.init_late	= tegra_init_late,
 	.restart	= tegra_assert_system_reset,

arch/arm/mach-tegra/board.h

@@ -55,5 +55,4 @@ static inline int harmony_pcie_init(void) { return 0; }
 
 void __init tegra_paz00_wifikill_init(void);
 
-extern void tegra_init_timer(void);
 #endif

drivers/clocksource/Makefile

@@ -17,5 +17,6 @@ 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_SUNXI_TIMER)	+= sunxi_timer.o
+obj-$(CONFIG_ARCH_TEGRA)	+= tegra20_timer.o
 
 obj-$(CONFIG_CLKSRC_ARM_GENERIC)	+= arm_generic.o

arch/arm/mach-tegra/timer.c → drivers/clocksource/tegra20_timer.c

 /*
- * arch/arch/mach-tegra/timer.c
- *
  * Copyright (C) 2010 Google, Inc.
  *
  * Author:
@@ -33,8 +31,6 @@
 #include <asm/smp_twd.h>
 #include <asm/sched_clock.h>
 
-#include "board.h"
-
 #define RTC_SECONDS            0x08
 #define RTC_SHADOW_SECONDS     0x0c
 #define RTC_MILLISECONDS       0x10
@@ -168,7 +164,7 @@ static const struct of_device_id rtc_match[] __initconst = {
 	{}
 };
 
-void __init tegra_init_timer(void)
+static void __init tegra20_init_timer(void)
 {
 	struct device_node *np;
 	struct clk *clk;
@@ -272,6 +268,7 @@ void __init tegra_init_timer(void)
 #endif
 	register_persistent_clock(NULL, tegra_read_persistent_clock);
 }
+CLOCKSOURCE_OF_DECLARE(tegra20, "nvidia,tegra20-timer", tegra20_init_timer);
 
 #ifdef CONFIG_PM
 static u32 usec_config;