3 files changed, 34 insertions, 18 deletions

diff --git a/arch/sh/include/asm/suspend.h b/arch/sh/include/asm/suspend.h
index 8e2c55d..8eddf23 100644
--- a/arch/sh/include/asm/suspend.h
+++ b/arch/sh/include/asm/suspend.h
@@ -61,6 +61,9 @@ struct sh_sleep_data {
 	struct sh_sleep_regs data;
 };
 
+/* a bitmap of supported sleep modes (SUSP_SH..) */
+extern unsigned long sh_mobile_sleep_supported;
+
 #endif
 
 /* flags passed to assembly suspend code */
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index 1c504bd..83972aa 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -87,25 +87,31 @@ void sh_mobile_setup_cpuidle(void)
 
 	dev->safe_state = state;
 
-	state = &dev->states[i++];
-	snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
-	strncpy(state->desc, "SuperH Sleep Mode [SF]", CPUIDLE_DESC_LEN);
-	state->exit_latency = 100;
-	state->target_residency = 1 * 2;
-	state->power_usage = 1;
-	state->flags = 0;
-	state->flags |= CPUIDLE_FLAG_TIME_VALID;
-	state->enter = cpuidle_sleep_enter;
+	if (sh_mobile_sleep_supported & SUSP_SH_SF) {
+		state = &dev->states[i++];
+		snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
+		strncpy(state->desc, "SuperH Sleep Mode [SF]",
+			CPUIDLE_DESC_LEN);
+		state->exit_latency = 100;
+		state->target_residency = 1 * 2;
+		state->power_usage = 1;
+		state->flags = 0;
+		state->flags |= CPUIDLE_FLAG_TIME_VALID;
+		state->enter = cpuidle_sleep_enter;
+	}
 
-	state = &dev->states[i++];
-	snprintf(state->name, CPUIDLE_NAME_LEN, "C2");
-	strncpy(state->desc, "SuperH Mobile Standby Mode [SF]", CPUIDLE_DESC_LEN);
-	state->exit_latency = 2300;
-	state->target_residency = 1 * 2;
-	state->power_usage = 1;
-	state->flags = 0;
-	state->flags |= CPUIDLE_FLAG_TIME_VALID;
-	state->enter = cpuidle_sleep_enter;
+	if (sh_mobile_sleep_supported & SUSP_SH_STANDBY) {
+		state = &dev->states[i++];
+		snprintf(state->name, CPUIDLE_NAME_LEN, "C2");
+		strncpy(state->desc, "SuperH Mobile Standby Mode [SF]",
+			CPUIDLE_DESC_LEN);
+		state->exit_latency = 2300;
+		state->target_residency = 1 * 2;
+		state->power_usage = 1;
+		state->flags = 0;
+		state->flags |= CPUIDLE_FLAG_TIME_VALID;
+		state->enter = cpuidle_sleep_enter;
+	}
 
 	dev->state_count = i;
 
diff --git a/arch/sh/kernel/cpu/shmobile/pm.c b/arch/sh/kernel/cpu/shmobile/pm.c
index cb3d28f..a94dc48 100644
--- a/arch/sh/kernel/cpu/shmobile/pm.c
+++ b/arch/sh/kernel/cpu/shmobile/pm.c
@@ -67,6 +67,8 @@ extern char sh_mobile_sleep_enter_end;
 extern char sh_mobile_sleep_resume_start;
 extern char sh_mobile_sleep_resume_end;
 
+unsigned long sh_mobile_sleep_supported = SUSP_SH_SLEEP;
+
 void sh_mobile_register_self_refresh(unsigned long flags,
 				     void *pre_start, void *pre_end,
 				     void *post_start, void *post_end)
@@ -103,10 +105,15 @@ void sh_mobile_register_self_refresh(unsigned long flags,
 	vp = onchip_mem + 0x600; /* located at interrupt vector */
 	n = &sh_mobile_sleep_resume_end - &sh_mobile_sleep_resume_start;
 	memcpy(vp, &sh_mobile_sleep_resume_start, n);
+
+	sh_mobile_sleep_supported |= flags;
 }
 
 static int sh_pm_enter(suspend_state_t state)
 {
+	if (!(sh_mobile_sleep_supported & SUSP_MODE_STANDBY_SF))
+		return -ENXIO;
+
 	local_irq_disable();
 	set_bl_bit();
 	sh_mobile_call_standby(SUSP_MODE_STANDBY_SF);