diff options
Diffstat (limited to 'drivers/acpi/acpica/evxface.c')
| -rw-r--r-- | drivers/acpi/acpica/evxface.c | 436 |
1 files changed, 220 insertions, 216 deletions
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 61944e89565a..44bef5744ebb 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -51,222 +51,6 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxface") -/******************************************************************************* - * - * FUNCTION: acpi_install_exception_handler - * - * PARAMETERS: Handler - Pointer to the handler function for the - * event - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function - * - ******************************************************************************/ -#ifdef ACPI_FUTURE_USAGE -acpi_status acpi_install_exception_handler(acpi_exception_handler handler) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_exception_handler); - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (acpi_gbl_exception_handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - /* Install the handler */ - - acpi_gbl_exception_handler = handler; - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_exception_handler) -#endif /* ACPI_FUTURE_USAGE */ - -/******************************************************************************* - * - * FUNCTION: acpi_install_global_event_handler - * - * PARAMETERS: Handler - Pointer to the global event handler function - * Context - Value passed to the handler on each event - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function. The global handler - * is invoked upon each incoming GPE and Fixed Event. It is - * invoked at interrupt level at the time of the event dispatch. - * Can be used to update event counters, etc. - * - ******************************************************************************/ -acpi_status -acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_global_event_handler); - - /* Parameter validation */ - - if (!handler) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (acpi_gbl_global_event_handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - acpi_gbl_global_event_handler = handler; - acpi_gbl_global_event_handler_context = context; - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler) - -/******************************************************************************* - * - * FUNCTION: acpi_install_fixed_event_handler - * - * PARAMETERS: Event - Event type to enable. - * Handler - Pointer to the handler function for the - * event - * Context - Value passed to the handler on each GPE - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function and then enables the - * event. - * - ******************************************************************************/ -acpi_status -acpi_install_fixed_event_handler(u32 event, - acpi_event_handler handler, void *context) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler); - - /* Parameter validation */ - - if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (NULL != acpi_gbl_fixed_event_handlers[event].handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - /* Install the handler before enabling the event */ - - acpi_gbl_fixed_event_handlers[event].handler = handler; - acpi_gbl_fixed_event_handlers[event].context = context; - - status = acpi_clear_event(event); - if (ACPI_SUCCESS(status)) - status = acpi_enable_event(event, 0); - if (ACPI_FAILURE(status)) { - ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X", - event)); - - /* Remove the handler */ - - acpi_gbl_fixed_event_handlers[event].handler = NULL; - acpi_gbl_fixed_event_handlers[event].context = NULL; - } else { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Enabled fixed event %X, Handler=%p\n", event, - handler)); - } - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler) - -/******************************************************************************* - * - * FUNCTION: acpi_remove_fixed_event_handler - * - * PARAMETERS: Event - Event type to disable. - * Handler - Address of the handler - * - * RETURN: Status - * - * DESCRIPTION: Disables the event and unregisters the event handler. - * - ******************************************************************************/ -acpi_status -acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler) -{ - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler); - - /* Parameter validation */ - - if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Disable the event before removing the handler */ - - status = acpi_disable_event(event, 0); - - /* Always Remove the handler */ - - acpi_gbl_fixed_event_handlers[event].handler = NULL; - acpi_gbl_fixed_event_handlers[event].context = NULL; - - if (ACPI_FAILURE(status)) { - ACPI_WARNING((AE_INFO, - "Could not write to fixed event enable register 0x%X", - event)); - } else { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n", - event)); - } - - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler) /******************************************************************************* * @@ -334,6 +118,7 @@ acpi_add_handler_object(struct acpi_object_notify_handler *parent_obj, return AE_OK; } + /******************************************************************************* * * FUNCTION: acpi_install_notify_handler @@ -705,6 +490,224 @@ ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler) /******************************************************************************* * + * FUNCTION: acpi_install_exception_handler + * + * PARAMETERS: Handler - Pointer to the handler function for the + * event + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function + * + ******************************************************************************/ +#ifdef ACPI_FUTURE_USAGE +acpi_status acpi_install_exception_handler(acpi_exception_handler handler) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_exception_handler); + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (acpi_gbl_exception_handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + /* Install the handler */ + + acpi_gbl_exception_handler = handler; + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_exception_handler) +#endif /* ACPI_FUTURE_USAGE */ + +#if (!ACPI_REDUCED_HARDWARE) +/******************************************************************************* + * + * FUNCTION: acpi_install_global_event_handler + * + * PARAMETERS: Handler - Pointer to the global event handler function + * Context - Value passed to the handler on each event + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function. The global handler + * is invoked upon each incoming GPE and Fixed Event. It is + * invoked at interrupt level at the time of the event dispatch. + * Can be used to update event counters, etc. + * + ******************************************************************************/ +acpi_status +acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_global_event_handler); + + /* Parameter validation */ + + if (!handler) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (acpi_gbl_global_event_handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + acpi_gbl_global_event_handler = handler; + acpi_gbl_global_event_handler_context = context; + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler) + +/******************************************************************************* + * + * FUNCTION: acpi_install_fixed_event_handler + * + * PARAMETERS: Event - Event type to enable. + * Handler - Pointer to the handler function for the + * event + * Context - Value passed to the handler on each GPE + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function and then enables the + * event. + * + ******************************************************************************/ +acpi_status +acpi_install_fixed_event_handler(u32 event, + acpi_event_handler handler, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler); + + /* Parameter validation */ + + if (event > ACPI_EVENT_MAX) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (NULL != acpi_gbl_fixed_event_handlers[event].handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + /* Install the handler before enabling the event */ + + acpi_gbl_fixed_event_handlers[event].handler = handler; + acpi_gbl_fixed_event_handlers[event].context = context; + + status = acpi_clear_event(event); + if (ACPI_SUCCESS(status)) + status = acpi_enable_event(event, 0); + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X", + event)); + + /* Remove the handler */ + + acpi_gbl_fixed_event_handlers[event].handler = NULL; + acpi_gbl_fixed_event_handlers[event].context = NULL; + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Enabled fixed event %X, Handler=%p\n", event, + handler)); + } + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler) + +/******************************************************************************* + * + * FUNCTION: acpi_remove_fixed_event_handler + * + * PARAMETERS: Event - Event type to disable. + * Handler - Address of the handler + * + * RETURN: Status + * + * DESCRIPTION: Disables the event and unregisters the event handler. + * + ******************************************************************************/ +acpi_status +acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler) +{ + acpi_status status = AE_OK; + + ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler); + + /* Parameter validation */ + + if (event > ACPI_EVENT_MAX) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Disable the event before removing the handler */ + + status = acpi_disable_event(event, 0); + + /* Always Remove the handler */ + + acpi_gbl_fixed_event_handlers[event].handler = NULL; + acpi_gbl_fixed_event_handlers[event].context = NULL; + + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, + "Could not write to fixed event enable register 0x%X", + event)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n", + event)); + } + + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler) + +/******************************************************************************* + * * FUNCTION: acpi_install_gpe_handler * * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT @@ -984,3 +987,4 @@ acpi_status acpi_release_global_lock(u32 handle) } ACPI_EXPORT_SYMBOL(acpi_release_global_lock) +#endif /* !ACPI_REDUCED_HARDWARE */ |