diff options
Diffstat (limited to 'drivers/acpi/acpica/evxface.c')
| -rw-r--r-- | drivers/acpi/acpica/evxface.c | 79 |
1 files changed, 65 insertions, 14 deletions
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 36af222cac65..e1141402dbed 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2010, Intel Corp. + * Copyright (C) 2000 - 2011, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -92,6 +92,57 @@ acpi_status acpi_install_exception_handler(acpi_exception_handler handler) 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 @@ -671,10 +722,10 @@ ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler) acpi_status acpi_install_gpe_handler(acpi_handle gpe_device, u32 gpe_number, - u32 type, acpi_event_handler address, void *context) + u32 type, acpi_gpe_handler address, void *context) { struct acpi_gpe_event_info *gpe_event_info; - struct acpi_handler_info *handler; + struct acpi_gpe_handler_info *handler; acpi_status status; acpi_cpu_flags flags; @@ -693,7 +744,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device, /* Allocate memory for the handler object */ - handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info)); + handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_handler_info)); if (!handler) { status = AE_NO_MEMORY; goto unlock_and_exit; @@ -722,7 +773,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device, handler->address = address; handler->context = context; handler->method_node = gpe_event_info->dispatch.method_node; - handler->orig_flags = gpe_event_info->flags & + handler->original_flags = gpe_event_info->flags & (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); /* @@ -731,10 +782,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device, * disabled now to avoid spurious execution of the handler. */ - if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD) + if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) && gpe_event_info->runtime_count) { - handler->orig_enabled = 1; - (void)acpi_raw_disable_gpe(gpe_event_info); + handler->originally_enabled = 1; + (void)acpi_ev_remove_gpe_reference(gpe_event_info); } /* Install the handler */ @@ -777,10 +828,10 @@ ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler) ******************************************************************************/ acpi_status acpi_remove_gpe_handler(acpi_handle gpe_device, - u32 gpe_number, acpi_event_handler address) + u32 gpe_number, acpi_gpe_handler address) { struct acpi_gpe_event_info *gpe_event_info; - struct acpi_handler_info *handler; + struct acpi_gpe_handler_info *handler; acpi_status status; acpi_cpu_flags flags; @@ -835,7 +886,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, gpe_event_info->dispatch.method_node = handler->method_node; gpe_event_info->flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); - gpe_event_info->flags |= handler->orig_flags; + gpe_event_info->flags |= handler->original_flags; /* * If the GPE was previously associated with a method and it was @@ -843,9 +894,9 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, * post-initialization configuration. */ - if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD) - && handler->orig_enabled) - (void)acpi_raw_enable_gpe(gpe_event_info); + if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) + && handler->originally_enabled) + (void)acpi_ev_add_gpe_reference(gpe_event_info); /* Now we can free the handler object */ |