diff options
Diffstat (limited to 'drivers/acpi/hardware/hwgpe.c')
| -rw-r--r-- | drivers/acpi/hardware/hwgpe.c | 477 |
1 files changed, 0 insertions, 477 deletions
diff --git a/drivers/acpi/hardware/hwgpe.c b/drivers/acpi/hardware/hwgpe.c deleted file mode 100644 index 0b80db9d9197..000000000000 --- a/drivers/acpi/hardware/hwgpe.c +++ /dev/null @@ -1,477 +0,0 @@ - -/****************************************************************************** - * - * Module Name: hwgpe - Low level GPE enable/disable/clear functions - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ - -#include <acpi/acpi.h> -#include <acpi/acevents.h> - -#define _COMPONENT ACPI_HARDWARE -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); - -/****************************************************************************** - * - * 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); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_write_gpe_enable_reg - * - * PARAMETERS: gpe_event_info - Info block for the GPE to be enabled - * - * RETURN: Status - * - * DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must - * already be cleared or set in the parent register - * enable_for_run mask. - * - ******************************************************************************/ - -acpi_status -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(); - - /* 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); - } - - /* 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); - - return (status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_clear_gpe - * - * PARAMETERS: gpe_event_info - Info block for the GPE to be cleared - * - * RETURN: Status - * - * DESCRIPTION: Clear the status bit for a single GPE. - * - ******************************************************************************/ - -acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info) -{ - acpi_status status; - u8 register_bit; - - 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, register_bit, - &gpe_event_info->register_info-> - status_address); - - return (status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_get_gpe_status - * - * PARAMETERS: gpe_event_info - Info block for the GPE to queried - * event_status - Where the GPE status is returned - * - * RETURN: Status - * - * DESCRIPTION: Return the status of a single GPE. - * - ******************************************************************************/ - -acpi_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(); - - if (!event_status) { - return (AE_BAD_PARAMETER); - } - - /* Get the info block for the entire GPE register */ - - gpe_register_info = gpe_event_info->register_info; - - /* Get the register bitmask for this GPE */ - - register_bit = (u8) - (1 << - (gpe_event_info->gpe_number - - gpe_event_info->register_info->base_gpe_number)); - - /* GPE currently enabled? (enabled for runtime?) */ - - if (register_bit & gpe_register_info->enable_for_run) { - local_event_status |= ACPI_EVENT_FLAG_ENABLED; - } - - /* GPE enabled for wake? */ - - if (register_bit & gpe_register_info->enable_for_wake) { - local_event_status |= ACPI_EVENT_FLAG_WAKE_ENABLED; - } - - /* GPE currently active (status bit == 1)? */ - - status = - acpi_hw_low_level_read(8, &in_byte, - &gpe_register_info->status_address); - if (ACPI_FAILURE(status)) { - goto unlock_and_exit; - } - - if (register_bit & in_byte) { - local_event_status |= ACPI_EVENT_FLAG_SET; - } - - /* Set return value */ - - (*event_status) = local_event_status; - - unlock_and_exit: - return (status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_disable_gpe_block - * - * PARAMETERS: gpe_xrupt_info - GPE Interrupt info - * gpe_block - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Disable all GPEs within a single GPE block - * - ******************************************************************************/ - -acpi_status -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; - - /* 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)) { - return (status); - } - } - - return (AE_OK); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_clear_gpe_block - * - * PARAMETERS: gpe_xrupt_info - GPE Interrupt info - * gpe_block - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Clear status bits for all GPEs within a single GPE block - * - ******************************************************************************/ - -acpi_status -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; - - /* 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)) { - return (status); - } - } - - return (AE_OK); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_enable_runtime_gpe_block - * - * PARAMETERS: gpe_xrupt_info - GPE Interrupt info - * gpe_block - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes - * combination wake/run GPEs. - * - ******************************************************************************/ - -acpi_status -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; - - /* NOTE: assumes that all GPEs are currently disabled */ - - /* Examine each GPE Register within the block */ - - for (i = 0; i < gpe_block->register_count; i++) { - if (!gpe_block->register_info[i].enable_for_run) { - continue; - } - - /* 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)) { - return (status); - } - } - - return (AE_OK); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_enable_wakeup_gpe_block - * - * PARAMETERS: gpe_xrupt_info - GPE Interrupt info - * gpe_block - Gpe Block info - * - * RETURN: Status - * - * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes - * combination wake/run GPEs. - * - ******************************************************************************/ - -static acpi_status -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; - - /* Examine each GPE Register within the block */ - - for (i = 0; i < gpe_block->register_count; i++) { - if (!gpe_block->register_info[i].enable_for_wake) { - continue; - } - - /* 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)) { - return (status); - } - } - - return (AE_OK); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_disable_all_gpes - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Disable and clear all GPEs in all GPE blocks - * - ******************************************************************************/ - -acpi_status acpi_hw_disable_all_gpes(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(hw_disable_all_gpes); - - 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: None - * - * RETURN: Status - * - * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks - * - ******************************************************************************/ - -acpi_status acpi_hw_enable_all_runtime_gpes(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes); - - status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block); - return_ACPI_STATUS(status); -} - -/****************************************************************************** - * - * FUNCTION: acpi_hw_enable_all_wakeup_gpes - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks - * - ******************************************************************************/ - -acpi_status acpi_hw_enable_all_wakeup_gpes(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes); - - status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block); - return_ACPI_STATUS(status); -} |