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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2015-09-30 01:58:40 +0200
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-02-17 17:53:02 +0100
commitfbc7edca5a7dd417013ef4900763ef931f325b3d (patch)
tree39af724e49947af4476cc7277a2aa8bb3a8d824a /arch/arm/mach-at91
parentARM: at91: pm: find and remap the pmc (diff)
downloadlinux-fbc7edca5a7dd417013ef4900763ef931f325b3d.tar.xz
linux-fbc7edca5a7dd417013ef4900763ef931f325b3d.zip
ARM: at91: pm: move idle functions to pm.c
Avoid using code from clk/at91 for PM. This also has the bonus effect of setting arm_pm_idle for sama5 platforms. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'arch/arm/mach-at91')
-rw-r--r--arch/arm/mach-at91/at91rm9200.c2
-rw-r--r--arch/arm/mach-at91/at91sam9.c2
-rw-r--r--arch/arm/mach-at91/generic.h6
-rw-r--r--arch/arm/mach-at91/pm.c37
-rw-r--r--arch/arm/mach-at91/sama5.c2
5 files changed, 35 insertions, 14 deletions
diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c
index c1a7c6cc00e1..63b4fa25b48a 100644
--- a/arch/arm/mach-at91/at91rm9200.c
+++ b/arch/arm/mach-at91/at91rm9200.c
@@ -12,7 +12,6 @@
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
-#include <asm/system_misc.h>
#include "generic.h"
#include "soc.h"
@@ -33,7 +32,6 @@ static void __init at91rm9200_dt_device_init(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev);
- arm_pm_idle = at91rm9200_idle;
at91rm9200_pm_init();
}
diff --git a/arch/arm/mach-at91/at91sam9.c b/arch/arm/mach-at91/at91sam9.c
index 7eb64f763034..cada2a6412b3 100644
--- a/arch/arm/mach-at91/at91sam9.c
+++ b/arch/arm/mach-at91/at91sam9.c
@@ -62,8 +62,6 @@ static void __init at91sam9_common_init(void)
soc_dev = soc_device_to_device(soc);
of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev);
-
- arm_pm_idle = at91sam9_idle;
}
static void __init at91sam9_dt_device_init(void)
diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index b0fa7dc7286d..d224e195706a 100644
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -18,20 +18,18 @@
extern void __init at91_map_io(void);
extern void __init at91_alt_map_io(void);
-/* idle */
-extern void at91rm9200_idle(void);
-extern void at91sam9_idle(void);
-
#ifdef CONFIG_PM
extern void __init at91rm9200_pm_init(void);
extern void __init at91sam9260_pm_init(void);
extern void __init at91sam9g45_pm_init(void);
extern void __init at91sam9x5_pm_init(void);
+extern void __init sama5_pm_init(void);
#else
static inline void __init at91rm9200_pm_init(void) { }
static inline void __init at91sam9260_pm_init(void) { }
static inline void __init at91sam9g45_pm_init(void) { }
static inline void __init at91sam9x5_pm_init(void) { }
+static inline void __init sama5_pm_init(void) { }
#endif
#endif /* _AT91_GENERIC_H */
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 8923efbfa7fa..f06270198bf1 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -31,6 +31,7 @@
#include <asm/mach/irq.h>
#include <asm/fncpy.h>
#include <asm/cacheflush.h>
+#include <asm/system_misc.h>
#include "generic.h"
#include "pm.h"
@@ -354,6 +355,21 @@ static __init void at91_dt_ramc(void)
at91_pm_set_standby(standby);
}
+void at91rm9200_idle(void)
+{
+ /*
+ * Disable the processor clock. The processor will be automatically
+ * re-enabled by an interrupt or by a reset.
+ */
+ writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+}
+
+void at91sam9_idle(void)
+{
+ writel(AT91_PMC_PCK, pmc + AT91_PMC_SCDR);
+ cpu_do_idle();
+}
+
static void __init at91_pm_sram_init(void)
{
struct gen_pool *sram_pool;
@@ -411,7 +427,7 @@ static const struct of_device_id atmel_pmc_ids[] __initconst = {
{ /* sentinel */ },
};
-static void __init at91_pm_init(void)
+static void __init at91_pm_init(void (*pm_idle)(void))
{
struct device_node *pmc_np;
@@ -425,6 +441,9 @@ static void __init at91_pm_init(void)
return;
}
+ if (pm_idle)
+ arm_pm_idle = pm_idle;
+
at91_pm_sram_init();
if (at91_suspend_sram_fn)
@@ -445,7 +464,7 @@ void __init at91rm9200_pm_init(void)
at91_pm_data.uhp_udp_mask = AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP;
at91_pm_data.memctrl = AT91_MEMCTRL_MC;
- at91_pm_init();
+ at91_pm_init(at91rm9200_idle);
}
void __init at91sam9260_pm_init(void)
@@ -453,7 +472,7 @@ void __init at91sam9260_pm_init(void)
at91_dt_ramc();
at91_pm_data.memctrl = AT91_MEMCTRL_SDRAMC;
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
- at91_pm_init();
+ at91_pm_init(at91sam9_idle);
}
void __init at91sam9g45_pm_init(void)
@@ -461,7 +480,7 @@ void __init at91sam9g45_pm_init(void)
at91_dt_ramc();
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP;
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
- at91_pm_init();
+ at91_pm_init(at91sam9_idle);
}
void __init at91sam9x5_pm_init(void)
@@ -469,5 +488,13 @@ void __init at91sam9x5_pm_init(void)
at91_dt_ramc();
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
- at91_pm_init();
+ at91_pm_init(at91sam9_idle);
+}
+
+void __init sama5_pm_init(void)
+{
+ at91_dt_ramc();
+ at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
+ at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
+ at91_pm_init(NULL);
}
diff --git a/arch/arm/mach-at91/sama5.c b/arch/arm/mach-at91/sama5.c
index d9cf6799aec0..df8fdf1cf66d 100644
--- a/arch/arm/mach-at91/sama5.c
+++ b/arch/arm/mach-at91/sama5.c
@@ -51,7 +51,7 @@ static void __init sama5_dt_device_init(void)
soc_dev = soc_device_to_device(soc);
of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev);
- at91sam9x5_pm_init();
+ sama5_pm_init();
}
static const char *const sama5_dt_board_compat[] __initconst = {