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>

4 files changed, 45 insertions, 56 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 5a097c46bc46..cc2add7e39e7 100644
--- a/arch/blackfin/Kconfig
+++ b/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"
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index 64d746114e4b..e713b9db867d 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/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);
 
diff --git a/arch/blackfin/mach-common/pm.c b/arch/blackfin/mach-common/pm.c
index 4fe6a2366b13..143134b852ea 100644
--- a/arch/blackfin/mach-common/pm.c
+++ b/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);
 
diff --git a/include/asm-blackfin/bfin-global.h b/include/asm-blackfin/bfin-global.h
index 9fbbee61f982..93ae5335e8a3 100644
--- a/include/asm-blackfin/bfin-global.h
+++ b/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;