*****************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <acpi/acevents.h>
#define _COMPONENT ACPI_HARDWARE
- ACPI_MODULE_NAME ("hwgpe")
+ACPI_MODULE_NAME("hwgpe")
/* Local prototypes */
-
static acpi_status
-acpi_hw_enable_wakeup_gpe_block (
- struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block);
+acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block);
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_hw_low_disable_gpe
+ *
+ * PARAMETERS: gpe_event_info - Info block for the GPE to be disabled
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Disable a single GPE in the enable register.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+ struct acpi_gpe_register_info *gpe_register_info;
+ acpi_status status;
+ u32 enable_mask;
+
+ /* Get the info block for the entire GPE register */
+
+ gpe_register_info = gpe_event_info->register_info;
+ if (!gpe_register_info) {
+ return (AE_NOT_EXIST);
+ }
+
+ /* Get current value of the enable register that contains this GPE */
+
+ status = acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH, &enable_mask,
+ &gpe_register_info->enable_address);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Clear just the bit that corresponds to this GPE */
+
+ ACPI_CLEAR_BIT(enable_mask,
+ ((u32) 1 <<
+ (gpe_event_info->gpe_number -
+ gpe_register_info->base_gpe_number)));
+ /* Write the updated enable mask */
+
+ status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, enable_mask,
+ &gpe_register_info->enable_address);
+
+ return (status);
+}
/******************************************************************************
*
******************************************************************************/
acpi_status
-acpi_hw_write_gpe_enable_reg (
- struct acpi_gpe_event_info *gpe_event_info)
+acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info)
{
- struct acpi_gpe_register_info *gpe_register_info;
- acpi_status status;
-
-
- ACPI_FUNCTION_ENTRY ();
+ struct acpi_gpe_register_info *gpe_register_info;
+ acpi_status status;
+ ACPI_FUNCTION_ENTRY();
/* Get the info block for the entire GPE register */
/* Write the entire GPE (runtime) enable register */
- status = acpi_hw_low_level_write (8, gpe_register_info->enable_for_run,
- &gpe_register_info->enable_address);
+ status = acpi_hw_low_level_write(8, gpe_register_info->enable_for_run,
+ &gpe_register_info->enable_address);
return (status);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_clear_gpe
*
******************************************************************************/
-acpi_status
-acpi_hw_clear_gpe (
- struct acpi_gpe_event_info *gpe_event_info)
+acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
{
- acpi_status status;
-
+ acpi_status status;
+ u8 register_bit;
- ACPI_FUNCTION_ENTRY ();
+ ACPI_FUNCTION_ENTRY();
+ register_bit = (u8)
+ (1 <<
+ (gpe_event_info->gpe_number -
+ gpe_event_info->register_info->base_gpe_number));
/*
* Write a one to the appropriate bit in the status register to
* clear this GPE.
*/
- status = acpi_hw_low_level_write (8, gpe_event_info->register_bit,
- &gpe_event_info->register_info->status_address);
+ status = acpi_hw_low_level_write(8, register_bit,
+ &gpe_event_info->register_info->
+ status_address);
return (status);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_get_gpe_status
*
******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
acpi_status
-acpi_hw_get_gpe_status (
- struct acpi_gpe_event_info *gpe_event_info,
- acpi_event_status *event_status)
+acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
+ acpi_event_status * event_status)
{
- u32 in_byte;
- u8 register_bit;
- struct acpi_gpe_register_info *gpe_register_info;
- acpi_status status;
- acpi_event_status local_event_status = 0;
-
-
- ACPI_FUNCTION_ENTRY ();
+ u32 in_byte;
+ u8 register_bit;
+ struct acpi_gpe_register_info *gpe_register_info;
+ acpi_status status;
+ acpi_event_status local_event_status = 0;
+ ACPI_FUNCTION_ENTRY();
if (!event_status) {
return (AE_BAD_PARAMETER);
/* Get the register bitmask for this GPE */
- register_bit = gpe_event_info->register_bit;
+ register_bit = (u8)
+ (1 <<
+ (gpe_event_info->gpe_number -
+ gpe_event_info->register_info->base_gpe_number));
/* GPE currently enabled? (enabled for runtime?) */
/* GPE currently active (status bit == 1)? */
- status = acpi_hw_low_level_read (8, &in_byte, &gpe_register_info->status_address);
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_hw_low_level_read(8, &in_byte,
+ &gpe_register_info->status_address);
+ if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
(*event_status) = local_event_status;
-
-unlock_and_exit:
+ unlock_and_exit:
return (status);
}
-#endif /* ACPI_FUTURE_USAGE */
-
/******************************************************************************
*
******************************************************************************/
acpi_status
-acpi_hw_disable_gpe_block (
- struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
+ struct acpi_gpe_block_info * gpe_block)
{
- u32 i;
- acpi_status status;
-
+ u32 i;
+ acpi_status status;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
+
/* Disable all GPEs in this register */
- status = acpi_hw_low_level_write (8, 0x00,
- &gpe_block->register_info[i].enable_address);
- if (ACPI_FAILURE (status)) {
+ status = acpi_hw_low_level_write(8, 0x00,
+ &gpe_block->register_info[i].
+ enable_address);
+ if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_clear_gpe_block
******************************************************************************/
acpi_status
-acpi_hw_clear_gpe_block (
- struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
+ struct acpi_gpe_block_info * gpe_block)
{
- u32 i;
- acpi_status status;
-
+ u32 i;
+ acpi_status status;
/* Examine each GPE Register within the block */
for (i = 0; i < gpe_block->register_count; i++) {
+
/* Clear status on all GPEs in this register */
- status = acpi_hw_low_level_write (8, 0xFF,
- &gpe_block->register_info[i].status_address);
- if (ACPI_FAILURE (status)) {
+ status = acpi_hw_low_level_write(8, 0xFF,
+ &gpe_block->register_info[i].
+ status_address);
+ if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_runtime_gpe_block
******************************************************************************/
acpi_status
-acpi_hw_enable_runtime_gpe_block (
- struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
+ struct acpi_gpe_block_info * gpe_block)
{
- u32 i;
- acpi_status status;
-
+ u32 i;
+ acpi_status status;
/* NOTE: assumes that all GPEs are currently disabled */
/* Enable all "runtime" GPEs in this register */
- status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_run,
- &gpe_block->register_info[i].enable_address);
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_hw_low_level_write(8,
+ gpe_block->register_info[i].
+ enable_for_run,
+ &gpe_block->register_info[i].
+ enable_address);
+ if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_wakeup_gpe_block
******************************************************************************/
static acpi_status
-acpi_hw_enable_wakeup_gpe_block (
- struct acpi_gpe_xrupt_info *gpe_xrupt_info,
- struct acpi_gpe_block_info *gpe_block)
+acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+ struct acpi_gpe_block_info *gpe_block)
{
- u32 i;
- acpi_status status;
-
+ u32 i;
+ acpi_status status;
/* Examine each GPE Register within the block */
/* Enable all "wake" GPEs in this register */
- status = acpi_hw_low_level_write (8,
- gpe_block->register_info[i].enable_for_wake,
- &gpe_block->register_info[i].enable_address);
- if (ACPI_FAILURE (status)) {
+ status = acpi_hw_low_level_write(8,
+ gpe_block->register_info[i].
+ enable_for_wake,
+ &gpe_block->register_info[i].
+ enable_address);
+ if (ACPI_FAILURE(status)) {
return (status);
}
}
return (AE_OK);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_disable_all_gpes
*
- * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
+ * PARAMETERS: None
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_hw_disable_all_gpes (
- u32 flags)
+acpi_status acpi_hw_disable_all_gpes(void)
{
- acpi_status status;
-
+ acpi_status status;
- ACPI_FUNCTION_TRACE ("hw_disable_all_gpes");
+ ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
-
- status = acpi_ev_walk_gpe_list (acpi_hw_disable_gpe_block, flags);
- status = acpi_ev_walk_gpe_list (acpi_hw_clear_gpe_block, flags);
- return_ACPI_STATUS (status);
+ status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
+ status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
+ return_ACPI_STATUS(status);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_all_runtime_gpes
*
- * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
+ * PARAMETERS: None
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_hw_enable_all_runtime_gpes (
- u32 flags)
+acpi_status acpi_hw_enable_all_runtime_gpes(void)
{
- acpi_status status;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
- ACPI_FUNCTION_TRACE ("hw_enable_all_runtime_gpes");
-
-
- status = acpi_ev_walk_gpe_list (acpi_hw_enable_runtime_gpe_block, flags);
- return_ACPI_STATUS (status);
+ status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block);
+ return_ACPI_STATUS(status);
}
-
/******************************************************************************
*
* FUNCTION: acpi_hw_enable_all_wakeup_gpes
*
- * PARAMETERS: Flags - ACPI_NOT_ISR or ACPI_ISR
+ * PARAMETERS: None
*
* RETURN: Status
*
*
******************************************************************************/
-acpi_status
-acpi_hw_enable_all_wakeup_gpes (
- u32 flags)
+acpi_status acpi_hw_enable_all_wakeup_gpes(void)
{
- acpi_status status;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
- ACPI_FUNCTION_TRACE ("hw_enable_all_wakeup_gpes");
-
-
- status = acpi_ev_walk_gpe_list (acpi_hw_enable_wakeup_gpe_block, flags);
- return_ACPI_STATUS (status);
+ status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block);
+ return_ACPI_STATUS(status);
}
-