[PATCH 5/8] ARM: at91: move the restart function to the system timer driver

Alexandre Belloni
2015-01-05T12:08:26Z

Restarting on an at91rm9200 is handled by using the system timer. Move that
function to the system timer driver.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
arch/arm/mach-at91/at91rm9200.c | 11 -----------
drivers/clocksource/timer-atmel-st.c | 12 ++++++++++++
2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index b52916947535..4ea889cd6091 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -15,7 +15,6 @@

#include <asm/mach/map.h>
#include <asm/system_misc.h>
-#include <mach/at91_st.h>
#include <mach/hardware.h>

#include "soc.h"
@@ -30,15 +29,6 @@ static void at91rm9200_idle(void)
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
}

-static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
-{
- /*
- * Perform a hardware reset with the use of the Watchdog timer.
- */
- at91_st_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
- at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
-}
-
/* --------------------------------------------------------------------
* AT91RM9200 processor initialization
* -------------------------------------------------------------------- */
@@ -51,7 +41,6 @@ static void __init at91rm9200_map_io(void)
static void __init at91rm9200_initialize(void)
{
arm_pm_idle = at91rm9200_idle;
- arm_pm_restart = at91rm9200_restart;
}

diff --git a/drivers/clocksource/timer-atmel-st.c b/drivers/clocksource/timer-atmel-st.c
index 51761f8927b7..522583d6cc78 100644
--- a/drivers/clocksource/timer-atmel-st.c
+++ b/drivers/clocksource/timer-atmel-st.c
@@ -29,6 +29,7 @@
#include <linux/of_irq.h>

#include <asm/mach/time.h>
+#include <asm/system_misc.h>

#include <mach/at91_st.h>
#include <mach/hardware.h>
@@ -180,6 +181,15 @@ static struct clock_event_device clkevt = {
.set_mode = clkevt32k_mode,
};

+static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
+{
+ /*
+ * Perform a hardware reset with the use of the Watchdog timer.
+ */
+ at91_st_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
+ at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
+}
+
void __iomem *at91_st_base;
EXPORT_SYMBOL_GPL(at91_st_base);

@@ -248,4 +258,6 @@ void __init at91rm9200_timer_init(void)

/* register clocksource */
clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK);
+
+ arm_pm_restart = at91rm9200_restart;
}
--
2.1.0