nuc: Support hibernate_wake_pins on wheatley, npcx_evb and npcx_evb_arm.

Modified hibernate funcs to support hibernate_wake_pins on weatley, npcx_evb
and npcx_evb_arm.
For better power consumption, we disable ADC, tri-state spi pins, all inputs
of wake-ups to prevent leakage current caused by input floating and set
necessary GPIOs' states in hibernate function.

Modified drivers:
1. npcx_evb/board.c: Add hibernate_wake_pins array for hibernate.
2. npcx_evb_arm/board.c: : Add hibernate_wake_pins array for hibernate.
3. wheatley/board.c: Add hibernate_wake_pins array for hibernate.
4. wheatley/board.c: Add board_set_gpio_state_hibernate func for adjusting
   GPIOs' status related to board for better power consumption.
5. hwtimer.c: Remove unnecessary interrupt_enable/disable funcs. Interrupt
   will disable before it is called.
6. register.h: Add WKINEN definition and declarations used for hibernate.
7. system.c: Add system_set_gpios_and_wakeup_inputs_hibernate to set GPIOs'
   state and wake-up inputs before entering hibernate.
8. system_chip.h: Remove unused BBRM_DATA_INDEX_PBUTTON field.
9. gpio.c: Enable WKINEN in gpio_set_flags_by_mask func.

BUG=chrome-os-partner:34346
TEST=make buildall -j; test nuvoton IC specific drivers
BRANCH=none

Change-Id: Ic85814065464095fdcb7a75964c2c528d8f8e62f
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/321466
Reviewed-by: Randall Spangler <rspangler@chromium.org>

1 files changed, 14 insertions, 10 deletions

diff --git a/chip/npcx/gpio.c b/chip/npcx/gpio.c
index 2e9eb62cd4..5574e1b0e0 100644
--- a/chip/npcx/gpio.c
+++ b/chip/npcx/gpio.c
@@ -375,6 +375,12 @@ void gpio_interrupt_type_sel(uint8_t port, uint8_t mask, uint32_t flags)
 
 		/* Enable wake-up input sources */
 		NPCX_WKEN(table, group) |= pmask;
+		NPCX_WKINEN(table, group) |= pmask;
+		/*
+		 * Clear pending bit since it might be set
+		 * if WKINEN bit is changed.
+		 */
+		NPCX_WKPCL(table, group) |= pmask;
 	}
 	/* Handle interrupt for edge trigger */
 	else if ((flags & GPIO_INT_F_RISING) ||
@@ -399,12 +405,18 @@ void gpio_interrupt_type_sel(uint8_t port, uint8_t mask, uint32_t flags)
 			NPCX_WKAEDG(table, group) &= ~pmask;
 			NPCX_WKEDG(table, group) |= pmask;
 		}
+
 		/* Enable wake-up input sources */
 		NPCX_WKEN(table, group) |= pmask;
-	} else{
+		NPCX_WKINEN(table, group) |= pmask;
+		/*
+		 * Clear pending bit since it might be set
+		 * if WKINEN bit is changed.
+		 */
+		NPCX_WKPCL(table, group) |= pmask;
+	} else
 		/* Disable wake-up input sources */
 		NPCX_WKEN(table, group) &= ~pmask;
-	}
 
 	/* No support analog mode */
 }
@@ -511,7 +523,6 @@ int gpio_disable_interrupt(enum gpio_signal signal)
 void gpio_pre_init(void)
 {
 	const struct gpio_info *g = gpio_list;
-	const struct gpio_wui_map *map;
 	int is_warm = system_is_reboot_warm();
 	int flags;
 	int i, j;
@@ -573,13 +584,6 @@ void gpio_pre_init(void)
 		/* Set up GPIO based on flags */
 		gpio_set_flags_by_mask(g->port, g->mask, flags);
 	}
-
-	/* Put power button information in bbram */
-	g = gpio_list + GPIO_POWER_BUTTON_L;
-	map = gpio_find_wui_from_io(g->port, g->mask);
-	NPCX_BBRAM(BBRM_DATA_INDEX_PBUTTON) = map->wui_table;
-	NPCX_BBRAM(BBRM_DATA_INDEX_PBUTTON + 1) = map->wui_group;
-	NPCX_BBRAM(BBRM_DATA_INDEX_PBUTTON + 2) = map->wui_mask;
 }
 
 /* List of GPIO IRQs to enable. Don't automatically enable interrupts for