Blackfin arch: Functional power management support

Merge VR Regulator Hibernate wakeups into set_irq_wake for internal
interrupts.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/Kconfig

@@ -933,13 +933,6 @@ endchoice
 comment "Possible Suspend Mem / Hibernate Wake-Up Sources"
 	depends on PM
 
-config PM_BFIN_WAKE_RTC
-	bool "Allow Wake-Up from RESET and on-chip RTC"
-	depends on PM
-	default n
-	help
-	  Enable RTC Wake-Up (Voltage Regulator Power-Up)
-
 config PM_BFIN_WAKE_PH6
 	bool "Allow Wake-Up from on-chip PHY or PH6 GP"
 	depends on PM && (BF52x || BF534 || BF536 || BF537)
@@ -947,41 +940,12 @@ config PM_BFIN_WAKE_PH6
 	help
 	  Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
 
-config PM_BFIN_WAKE_CAN
-	bool "Allow Wake-Up from on-chip CAN0/1"
-	depends on PM && (BF54x || BF534 || BF536 || BF537)
-	default n
-	help
-	  Enable CAN0/1 Wake-Up (Voltage Regulator Power-Up)
-
 config PM_BFIN_WAKE_GP
 	bool "Allow Wake-Up from GPIOs"
 	depends on PM && BF54x
 	default n
 	help
 	  Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
-
-config PM_BFIN_WAKE_USB
-	bool "Allow Wake-Up from on-chip USB"
-	depends on PM && (BF54x || BF52x)
-	default n
-	help
-	  Enable USB Wake-Up (Voltage Regulator Power-Up)
-
-config PM_BFIN_WAKE_KEYPAD
-	bool "Allow Wake-Up from on-chip Keypad"
-	depends on PM && BF54x
-	default n
-	help
-	  Enable Keypad Wake-Up (Voltage Regulator Power-Up)
-
-config PM_BFIN_WAKE_ROTARY
-	bool "Allow Wake-Up from on-chip Rotary"
-	depends on PM && BF54x
-	default n
-	help
-	  Enable Rotary Wake-Up (Voltage Regulator Power-Up)
-
 endmenu
 
 menu "CPU Frequency scaling"

arch/blackfin/mach-common/ints-priority.c

@@ -71,6 +71,7 @@ atomic_t num_spurious;
 
 #ifdef CONFIG_PM
 unsigned long bfin_sic_iwr[3];	/* Up to 3 SIC_IWRx registers */
+unsigned vr_wakeup;
 #endif
 
 struct ivgx {
@@ -184,17 +185,56 @@ static void bfin_internal_unmask_irq(unsigned int irq)
 #ifdef CONFIG_PM
 int bfin_internal_set_wake(unsigned int irq, unsigned int state)
 {
-	unsigned bank, bit;
+	unsigned bank, bit, wakeup = 0;
 	unsigned long flags;
 	bank = SIC_SYSIRQ(irq) / 32;
 	bit = SIC_SYSIRQ(irq) % 32;
 
+	switch (irq) {
+#ifdef IRQ_RTC
+	case IRQ_RTC:
+	wakeup |= WAKE;
+	break;
+#endif
+#ifdef IRQ_CAN0_RX
+	case IRQ_CAN0_RX:
+	wakeup |= CANWE;
+	break;
+#endif
+#ifdef IRQ_CAN1_RX
+	case IRQ_CAN1_RX:
+	wakeup |= CANWE;
+	break;
+#endif
+#ifdef IRQ_USB_INT0
+	case IRQ_USB_INT0:
+	wakeup |= USBWE;
+	break;
+#endif
+#ifdef IRQ_KEY
+	case IRQ_KEY:
+	wakeup |= KPADWE;
+	break;
+#endif
+#ifdef IRQ_CNT
+	case IRQ_CNT:
+	wakeup |= ROTWE;
+	break;
+#endif
+	default:
+	break;
+	}
+
 	local_irq_save(flags);
 
-	if (state)
+	if (state) {
 		bfin_sic_iwr[bank] |= (1 << bit);
-	else
+		vr_wakeup  |= wakeup;
+
+	} else {
 		bfin_sic_iwr[bank] &= ~(1 << bit);
+		vr_wakeup  &= ~wakeup;
+	}
 
 	local_irq_restore(flags);
 

arch/blackfin/mach-common/pm.c

@@ -229,28 +229,12 @@ int bfin_pm_suspend_mem_enter(void)
 	wakeup = bfin_read_VR_CTL() & ~FREQ;
 	wakeup |= SCKELOW;
 
-	/* FIXME: merge this somehow with set_irq_wake */
-#ifdef CONFIG_PM_BFIN_WAKE_RTC
-	wakeup |= WAKE;
-#endif
 #ifdef CONFIG_PM_BFIN_WAKE_PH6
 	wakeup |= PHYWE;
 #endif
-#ifdef CONFIG_PM_BFIN_WAKE_CAN
-	wakeup |= CANWE;
-#endif
 #ifdef CONFIG_PM_BFIN_WAKE_GP
 	wakeup |= GPWE;
 #endif
-#ifdef CONFIG_PM_BFIN_WAKE_USB
-	wakeup |= USBWE;
-#endif
-#ifdef CONFIG_PM_BFIN_WAKE_KEYPAD
-	wakeup |= KPADWE;
-#endif
-#ifdef CONFIG_PM_BFIN_WAKE_ROTARY
-	wakeup |= ROTWE;
-#endif
 
 	local_irq_save(flags);
 
@@ -268,7 +252,7 @@ int bfin_pm_suspend_mem_enter(void)
 	icache_disable();
 	bf53x_suspend_l1_mem(memptr);
 
-	do_hibernate(wakeup);	/* Goodbye */
+	do_hibernate(wakeup | vr_wakeup);	/* Goodbye */
 
 	bf53x_resume_l1_mem(memptr);
 

include/asm-blackfin/bfin-global.h

@@ -113,6 +113,7 @@ extern const char bfin_board_name[];
 extern unsigned long wall_jiffies;
 
 extern unsigned long bfin_sic_iwr[];
+extern unsigned vr_wakeup;
 extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
 extern struct file_operations dpmc_fops;
 extern unsigned long _ramstart, _ramend, _rambase;