Blackfin arch: Functional power management support
Michael Hennerich [Tue, 5 Aug 2008 09:38:41 +0000 (17:38 +0800)]
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
arch/blackfin/mach-common/ints-priority.c
arch/blackfin/mach-common/pm.c
include/asm-blackfin/bfin-global.h

index 5a097c4..cc2add7 100644 (file)
@@ -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"
index 64d7461..e713b9d 100644 (file)
@@ -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);
 
index 4fe6a23..143134b 100644 (file)
@@ -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);
 
index 9fbbee6..93ae533 100644 (file)
@@ -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;