arm/imx: remove cpu_is_xxx() from arch_idle()
This patch adds an idle hook imx_idle to be called in arch_idle().
Any soc that needs a customized idle implementation other than
cpu_do_idle() can set up this hook in soc specific call.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 4e3d978..afaa967 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -72,4 +72,15 @@
extern void mx51_efikamx_reset(void);
extern int mx53_revision(void);
extern int mx53_display_revision(void);
+
+enum mxc_cpu_pwr_mode {
+ WAIT_CLOCKED, /* wfi only */
+ WAIT_UNCLOCKED, /* WAIT */
+ WAIT_UNCLOCKED_POWER_OFF, /* WAIT + SRPG */
+ STOP_POWER_ON, /* just STOP */
+ STOP_POWER_OFF, /* STOP + SRPG */
+};
+
+extern void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode);
+extern void (*imx_idle)(void);
#endif
diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index 0987923..00a7819 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -183,13 +183,6 @@
};
int tzic_enable_wake(int is_idle);
-enum mxc_cpu_pwr_mode {
- WAIT_CLOCKED, /* wfi only */
- WAIT_UNCLOCKED, /* WAIT */
- WAIT_UNCLOCKED_POWER_OFF, /* WAIT + SRPG */
- STOP_POWER_ON, /* just STOP */
- STOP_POWER_OFF, /* STOP + SRPG */
-};
extern struct cpu_op *(*get_cpu_op)(int *op);
#endif
diff --git a/arch/arm/plat-mxc/include/mach/system.h b/arch/arm/plat-mxc/include/mach/system.h
index 51f02a9..cf88b35 100644
--- a/arch/arm/plat-mxc/include/mach/system.h
+++ b/arch/arm/plat-mxc/include/mach/system.h
@@ -17,41 +17,12 @@
#ifndef __ASM_ARCH_MXC_SYSTEM_H__
#define __ASM_ARCH_MXC_SYSTEM_H__
-#include <mach/hardware.h>
-#include <mach/common.h>
-
-extern void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode);
+extern void (*imx_idle)(void);
static inline void arch_idle(void)
{
- /* fix i.MX31 errata TLSbo65953 and i.MX35 errata ENGcm09472 */
- if (cpu_is_mx31() || cpu_is_mx35()) {
- unsigned long reg = 0;
- __asm__ __volatile__(
- /* disable I and D cache */
- "mrc p15, 0, %0, c1, c0, 0\n"
- "bic %0, %0, #0x00001000\n"
- "bic %0, %0, #0x00000004\n"
- "mcr p15, 0, %0, c1, c0, 0\n"
- /* invalidate I cache */
- "mov %0, #0\n"
- "mcr p15, 0, %0, c7, c5, 0\n"
- /* clear and invalidate D cache */
- "mov %0, #0\n"
- "mcr p15, 0, %0, c7, c14, 0\n"
- /* WFI */
- "mov %0, #0\n"
- "mcr p15, 0, %0, c7, c0, 4\n"
- "nop\n" "nop\n" "nop\n" "nop\n"
- "nop\n" "nop\n" "nop\n"
- /* enable I and D cache */
- "mrc p15, 0, %0, c1, c0, 0\n"
- "orr %0, %0, #0x00001000\n"
- "orr %0, %0, #0x00000004\n"
- "mcr p15, 0, %0, c1, c0, 0\n"
- : "=r" (reg));
- } else if (cpu_is_mx51())
- mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF);
+ if (imx_idle != NULL)
+ (imx_idle)();
else
cpu_do_idle();
}
diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c
index 8024f2a..5fa03e7 100644
--- a/arch/arm/plat-mxc/system.c
+++ b/arch/arm/plat-mxc/system.c
@@ -28,6 +28,8 @@
#include <asm/system.h>
#include <asm/mach-types.h>
+void (*imx_idle)(void) = NULL;
+
static void __iomem *wdog_base;
/*