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>

9 files changed, 56 insertions, 41 deletions

diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index ffa33b4dedde..6fad0d62052e 100644
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -30,6 +30,34 @@
 #include <mach/iomux-v3.h>
 #include <mach/irqs.h>
 
+static void imx3_idle(void)
+{
+        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));
+}
+
 void imx3_init_l2x0(void)
 {
         void __iomem *l2x0_base;
@@ -98,6 +126,7 @@ void __init imx31_init_early(void)
 {
         mxc_set_cpu_type(MXC_CPU_MX31);
         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
+        imx_idle = imx3_idle;
 }
 
 void __init imx35_init_early(void)
@@ -105,6 +134,7 @@ void __init imx35_init_early(void)
         mxc_set_cpu_type(MXC_CPU_MX35);
         mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
         mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
+        imx_idle = imx3_idle;
 }
 
 void __init mx31_init_irq(void)
diff --git a/arch/arm/mach-imx/pm-imx27.c b/arch/arm/mach-imx/pm-imx27.c
index acf17691d2cc..e455d2f855bf 100644
--- a/arch/arm/mach-imx/pm-imx27.c
+++ b/arch/arm/mach-imx/pm-imx27.c
@@ -11,7 +11,7 @@
 #include <linux/suspend.h>
 #include <linux/io.h>
 #include <mach/system.h>
-#include <mach/mx27.h>
+#include <mach/hardware.h>
 
 static int mx27_suspend_enter(suspend_state_t state)
 {
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index baea6e5cddd9..379593e19e33 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -21,6 +21,11 @@
 #include <mach/devices-common.h>
 #include <mach/iomux-v3.h>
 
+static void imx5_idle(void)
+{
+        mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF);
+}
+
 /*
  * Define the MX51 memory map.
  */
@@ -56,6 +61,7 @@ void __init imx51_init_early(void)
         mxc_set_cpu_type(MXC_CPU_MX51);
         mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
         mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR));
+        imx_idle = imx5_idle;
 }
 
 void __init mx53_map_io(void)
diff --git a/arch/arm/mach-mx5/pm-imx5.c b/arch/arm/mach-mx5/pm-imx5.c
index e4529af0da72..0624fb8edffb 100644
--- a/arch/arm/mach-mx5/pm-imx5.c
+++ b/arch/arm/mach-mx5/pm-imx5.c
@@ -14,7 +14,8 @@
 #include <linux/err.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
-#include <mach/system.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
 #include "crm_regs.h"
 
 static struct clk *gpc_dvfs_clk;
diff --git a/arch/arm/mach-mx5/system.c b/arch/arm/mach-mx5/system.c
index 76ae8dc33e00..144ebebc4a61 100644
--- a/arch/arm/mach-mx5/system.c
+++ b/arch/arm/mach-mx5/system.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <mach/hardware.h>
+#include <mach/common.h>
 #include "crm_regs.h"
 
 /* set cpu low power mode before WFI instruction. This function is called
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 4e3d97890d69..afaa96733c9b 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 mxc_arch_reset_init(void __iomem *);
 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 09879235a9f5..00a78193c681 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -183,13 +183,6 @@ struct cpu_op {
 };
 
 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 51f02a9d41a3..cf88b3593fba 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 8024f2ac177c..5fa03e7548ee 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;
 
 /*