ARM: delete struct sys_timer

Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html

Includes mach-omap2 fixes from Igor Grinberg.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

16 files changed, 20 insertions, 45 deletions

diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index 032d10817e7..d81a66362b7 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -671,5 +671,5 @@ MACHINE_START(AG5EVM, "ag5evm")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= ag5evm_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= sh73a0_earlytimer_init,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index 99ef190d090..c1d4ab63021 100644
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -1350,5 +1350,5 @@ MACHINE_START(AP4EVB, "ap4evb")
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= ap4evb_init,
 	.init_late	= sh7372_pm_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= sh7372_earlytimer_init,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c
index 5353adf6b82..e7912447ad5 100644
--- a/arch/arm/mach-shmobile/board-armadillo800eva.c
+++ b/arch/arm/mach-shmobile/board-armadillo800eva.c
@@ -1192,9 +1192,6 @@ static void __init eva_earlytimer_init(void)
 static void __init eva_add_early_devices(void)
 {
 	r8a7740_add_early_devices();
-
-	/* override timer setup with board-specific code */
-	shmobile_timer.init = eva_earlytimer_init;
 }
 
 #define RESCNT2 IOMEM(0xe6188020)
@@ -1216,7 +1213,7 @@ DT_MACHINE_START(ARMADILLO800EVA_DT, "armadillo800eva")
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= eva_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= eva_earlytimer_init,
 	.dt_compat	= eva_boards_compat_dt,
 	.restart	= eva_restart,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-bonito.c b/arch/arm/mach-shmobile/board-bonito.c
index cb8c994e143..331b7ce4edd 100644
--- a/arch/arm/mach-shmobile/board-bonito.c
+++ b/arch/arm/mach-shmobile/board-bonito.c
@@ -499,9 +499,6 @@ static void __init bonito_earlytimer_init(void)
 static void __init bonito_add_early_devices(void)
 {
 	r8a7740_add_early_devices();
-
-	/* override timer setup with board-specific code */
-	shmobile_timer.init = bonito_earlytimer_init;
 }
 
 MACHINE_START(BONITO, "bonito")
@@ -511,5 +508,5 @@ MACHINE_START(BONITO, "bonito")
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= bonito_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= bonito_earlytimer_init,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-kota2.c b/arch/arm/mach-shmobile/board-kota2.c
index bf88f9a8b7a..2f24994f2ef 100644
--- a/arch/arm/mach-shmobile/board-kota2.c
+++ b/arch/arm/mach-shmobile/board-kota2.c
@@ -553,5 +553,5 @@ MACHINE_START(KOTA2, "kota2")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= kota2_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= sh73a0_earlytimer_init,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-kzm9d.c b/arch/arm/mach-shmobile/board-kzm9d.c
index b52bc0d1273..59be864f599 100644
--- a/arch/arm/mach-shmobile/board-kzm9d.c
+++ b/arch/arm/mach-shmobile/board-kzm9d.c
@@ -92,6 +92,6 @@ DT_MACHINE_START(KZM9D_DT, "kzm9d")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= kzm9d_add_standard_devices,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= shmobile_timer_init,
 	.dt_compat	= kzm9d_boards_compat_dt,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index c02448d6847..adb23ef5112 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -795,7 +795,7 @@ DT_MACHINE_START(KZM9G_DT, "kzm9g")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= kzm_init,
 	.init_late	= shmobile_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= sh73a0_earlytimer_init,
 	.restart	= kzm9g_restart,
 	.dt_compat	= kzm9g_boards_compat_dt,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 2fed62f6604..fe4917f2c1a 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -1593,6 +1593,6 @@ DT_MACHINE_START(MACKEREL_DT, "mackerel")
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= mackerel_init,
 	.init_late	= sh7372_pm_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= sh7372_earlytimer_init,
 	.dt_compat  = mackerel_boards_compat_dt,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/board-marzen.c b/arch/arm/mach-shmobile/board-marzen.c
index 449f9289567..ca45a0c50af 100644
--- a/arch/arm/mach-shmobile/board-marzen.c
+++ b/arch/arm/mach-shmobile/board-marzen.c
@@ -385,5 +385,5 @@ MACHINE_START(MARZEN, "marzen")
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= marzen_init,
 	.init_late	= marzen_init_late,
-	.timer		= &shmobile_timer,
+	.init_time	= r8a7779_earlytimer_init,
 MACHINE_END
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index dfeca79e9e9..a57439eec11 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -2,7 +2,7 @@
 #define __ARCH_MACH_COMMON_H
 
 extern void shmobile_earlytimer_init(void);
-extern struct sys_timer shmobile_timer;
+extern void shmobile_timer_init(void);
 extern void shmobile_setup_delay(unsigned int max_cpu_core_mhz,
 			 unsigned int mult, unsigned int div);
 struct twd_local_timer;
@@ -20,6 +20,7 @@ extern void shmobile_cpuidle_set_driver(struct cpuidle_driver *drv);
 
 extern void sh7372_init_irq(void);
 extern void sh7372_map_io(void);
+extern void sh7372_earlytimer_init(void);
 extern void sh7372_add_early_devices(void);
 extern void sh7372_add_standard_devices(void);
 extern void sh7372_clock_init(void);
@@ -32,6 +33,7 @@ extern struct clk sh7372_extal2_clk;
 
 extern void sh73a0_init_irq(void);
 extern void sh73a0_map_io(void);
+extern void sh73a0_earlytimer_init(void);
 extern void sh73a0_add_early_devices(void);
 extern void sh73a0_add_standard_devices(void);
 extern void sh73a0_clock_init(void);
@@ -50,6 +52,7 @@ extern void r8a7740_pinmux_init(void);
 
 extern void r8a7779_init_irq(void);
 extern void r8a7779_map_io(void);
+extern void r8a7779_earlytimer_init(void);
 extern void r8a7779_add_early_devices(void);
 extern void r8a7779_add_standard_devices(void);
 extern void r8a7779_clock_init(void);
diff --git a/arch/arm/mach-shmobile/setup-emev2.c b/arch/arm/mach-shmobile/setup-emev2.c
index a47beeb1828..ea61cb657ac 100644
--- a/arch/arm/mach-shmobile/setup-emev2.c
+++ b/arch/arm/mach-shmobile/setup-emev2.c
@@ -467,7 +467,7 @@ DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
 	.init_irq	= emev2_init_irq_dt,
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= emev2_add_standard_devices_dt,
-	.timer		= &shmobile_timer,
+	.init_time	= shmobile_timer_init,
 	.dt_compat	= emev2_boards_compat_dt,
 MACHINE_END
 
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 095222469d0..03c69f9979a 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -705,12 +705,6 @@ void __init r8a7740_add_standard_devices(void)
 	rmobile_add_device_to_domain("A3SP",	&i2c1_device);
 }
 
-static void __init r8a7740_earlytimer_init(void)
-{
-	r8a7740_clock_init(0);
-	shmobile_earlytimer_init();
-}
-
 void __init r8a7740_add_early_devices(void)
 {
 	early_platform_add_devices(r8a7740_early_devices,
@@ -718,9 +712,6 @@ void __init r8a7740_add_early_devices(void)
 
 	/* setup early console here as well */
 	shmobile_setup_console();
-
-	/* override timer setup with soc-specific code */
-	shmobile_timer.init = r8a7740_earlytimer_init;
 }
 
 #ifdef CONFIG_USE_OF
@@ -763,7 +754,7 @@ DT_MACHINE_START(R8A7740_DT, "Generic R8A7740 (Flattened Device Tree)")
 	.init_irq	= r8a7740_init_irq,
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= r8a7740_add_standard_devices_dt,
-	.timer		= &shmobile_timer,
+	.init_time	= shmobile_timer_init,
 	.dt_compat	= r8a7740_boards_compat_dt,
 MACHINE_END
 
diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c
index 7a1ad4f3853..a181ced09e4 100644
--- a/arch/arm/mach-shmobile/setup-r8a7779.c
+++ b/arch/arm/mach-shmobile/setup-r8a7779.c
@@ -339,7 +339,7 @@ void __init r8a7779_add_standard_devices(void)
 /* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */
 void __init __weak r8a7779_register_twd(void) { }
 
-static void __init r8a7779_earlytimer_init(void)
+void __init r8a7779_earlytimer_init(void)
 {
 	r8a7779_clock_init();
 	shmobile_earlytimer_init();
@@ -366,7 +366,4 @@ void __init r8a7779_add_early_devices(void)
 	 * As a final step pass earlyprint=sh-sci.2,115200 on the kernel
 	 * command line in case of the marzen board.
 	 */
-
-	/* override timer setup with soc-specific code */
-	shmobile_timer.init = r8a7779_earlytimer_init;
 }
diff --git a/arch/arm/mach-shmobile/setup-sh7372.c b/arch/arm/mach-shmobile/setup-sh7372.c
index c917882424a..191ae72e21b 100644
--- a/arch/arm/mach-shmobile/setup-sh7372.c
+++ b/arch/arm/mach-shmobile/setup-sh7372.c
@@ -1054,7 +1054,7 @@ void __init sh7372_add_standard_devices(void)
 				       ARRAY_SIZE(domain_devices));
 }
 
-static void __init sh7372_earlytimer_init(void)
+void __init sh7372_earlytimer_init(void)
 {
 	sh7372_clock_init();
 	shmobile_earlytimer_init();
@@ -1067,9 +1067,6 @@ void __init sh7372_add_early_devices(void)
 
 	/* setup early console here as well */
 	shmobile_setup_console();
-
-	/* override timer setup with soc-specific code */
-	shmobile_timer.init = sh7372_earlytimer_init;
 }
 
 #ifdef CONFIG_USE_OF
@@ -1113,7 +1110,7 @@ DT_MACHINE_START(SH7372_DT, "Generic SH7372 (Flattened Device Tree)")
 	.init_irq	= sh7372_init_irq,
 	.handle_irq	= shmobile_handle_irq_intc,
 	.init_machine	= sh7372_add_standard_devices_dt,
-	.timer		= &shmobile_timer,
+	.init_time	= shmobile_timer_init,
 	.dt_compat	= sh7372_boards_compat_dt,
 MACHINE_END
 
diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index db99a4ade80..8c2d6424f47 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -796,7 +796,7 @@ void __init sh73a0_add_standard_devices(void)
 /* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */
 void __init __weak sh73a0_register_twd(void) { }
 
-static void __init sh73a0_earlytimer_init(void)
+void __init sh73a0_earlytimer_init(void)
 {
 	sh73a0_clock_init();
 	shmobile_earlytimer_init();
@@ -810,7 +810,4 @@ void __init sh73a0_add_early_devices(void)
 
 	/* setup early console here as well */
 	shmobile_setup_console();
-
-	/* override timer setup with soc-specific code */
-	shmobile_timer.init = sh73a0_earlytimer_init;
 }
diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index a68919727e2..fdbe54a1155 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -60,10 +60,6 @@ void __init shmobile_earlytimer_init(void)
 	late_time_init = shmobile_late_time_init;
 }
 
-static void __init shmobile_timer_init(void)
+void __init shmobile_timer_init(void)
 {
 }
-
-struct sys_timer shmobile_timer = {
-	.init		= shmobile_timer_init,
-};