Revert "ec_gpio: Add GPIO power down support"

This reverts commit 5b6ec95320d231fb15a9ec69e2eefeb5eed1fd25.

BUG=b:200823466
TEST=make buildall -j

Change-Id: I651c326be626788ddba7ad2cebe6c473a7d12d9a
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3273438
Reviewed-by: Vadim Sukhomlinov <sukhomlinov@chromium.org>

3 files changed, 0 insertions, 52 deletions

diff --git a/common/gpio.c b/common/gpio.c
index 76dbf58e14..cb3723f865 100644
--- a/common/gpio.c
+++ b/common/gpio.c
@@ -162,39 +162,6 @@ int gpio_get_ternary(enum gpio_signal signal)
 	return pu && !pd ? 2 : pd;
 }
 
-#ifdef CONFIG_GPIO_POWER_DOWN
-/*
- * Power down a group of GPIO pins marked with a module ID
- * in board/board_name/gpio.inc
- * Hibernation/sleep entry:
- * gpio_power_down_module(MODULE_xxxx)
- * Chip level code will power down all pins in module.
- * Wake:
- * Use gpio_config_module to put the module pin(s)
- * back to enabled state. Chip level code will re-power
- * and configure the pin(s).
- * This mechanism does not handle dynamic changing of
- * pin configuration at run time.
- */
-int gpio_power_down_module(enum module_id id)
-{
-	const struct gpio_alt_func *af;
-	int rv = EC_ERROR_INVAL;
-
-	/* Find pins and power down */
-	for (af = gpio_alt_funcs;
-	     af < gpio_alt_funcs + ARRAY_SIZE(gpio_alt_funcs); af++) {
-		if (af->module_id != id)
-			continue; /* Pins for some other module */
-
-		gpio_set_flags_by_mask(af->port, af->mask, GPIO_POWER_DOWN);
-		rv = EC_SUCCESS;
-	}
-
-	return rv;
-}
-#endif /* #ifdef CONFIG_GPIO_POWER_DOWN */
-
 __attribute__((weak)) void gpio_set_wakepin(enum gpio_signal signal,
 					    uint32_t flags)
 {
diff --git a/include/config.h b/include/config.h
index 75193567c6..c3ad6cacd3 100644
--- a/include/config.h
+++ b/include/config.h
@@ -1203,12 +1203,6 @@
 #undef CONFIG_IO_EXPANDER
 
 /*
- * EC's supporting powering down GPIO pins.
- * Add flag GPIO_POWER_DOWN and additional API's.
- */
-#undef CONFIG_GPIO_POWER_DOWN
-
-/*
  * Provide common runtime layer code (tasks, hooks ...)
  * You want this unless you are doing a really tiny firmware.
  */
diff --git a/include/gpio.h b/include/gpio.h
index b45c47d413..b0291b40f1 100644
--- a/include/gpio.h
+++ b/include/gpio.h
@@ -37,9 +37,6 @@
 #define GPIO_HIB_WAKE_LOW     BIT(20) /* Hibernate wake on low level */
 #define GPIO_HIB_WAKE_RISING  BIT(21) /* Hibernate wake on rising edge */
 #define GPIO_HIB_WAKE_FALLING BIT(22) /* Hibernate wake on falling edge */
-#ifdef CONFIG_GPIO_POWER_DOWN
-#define GPIO_POWER_DOWN    BIT(23) /* Pin and pad is powered off */
-#endif
 
 /* Common flag combinations */
 #define GPIO_OUT_LOW        (GPIO_OUTPUT | GPIO_LOW)
@@ -280,16 +277,6 @@ void gpio_set_flags_by_mask(uint32_t port, uint32_t mask, uint32_t flags);
  */
 void gpio_set_alternate_function(uint32_t port, uint32_t mask, int func);
 
-#ifdef CONFIG_GPIO_POWER_DOWN
-/**
- * Power down all GPIO pins in a module.
- *
- * @param id		Module ID to initialize
- * @return EC_SUCCESS, or non-zero if module_id is not found.
- */
-int gpio_power_down_module(enum module_id id);
-#endif
-
 /**
  * Configure a GPIO as wake source on a given condition and enable it, or
  * disable it.