dev/acpica/acpi_powerres.c

68 /* A relationship between a power resource and a consumer. */
73     TAILQ_ENTRY(acpi_powerreference)	ar_clink; /* link on consumer */
100 static ACPI_STATUS	acpi_pwr_register_consumer(ACPI_HANDLE consumer);
102 static ACPI_STATUS	acpi_pwr_deregister_consumer(ACPI_HANDLE consumer);
116 			*acpi_pwr_find_consumer(ACPI_HANDLE consumer);
236  * Register a power consumer.
238  * It's OK to call this if we already know about the consumer.
241 acpi_pwr_register_consumer(ACPI_HANDLE consumer)
248     /* Check to see whether we know about this consumer already */
249     if (acpi_pwr_find_consumer(consumer) != NULL)
252     /* Allocate a new power consumer */
257     pc->ac_consumer = consumer;
262     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "registered power consumer %s\n",
263 		     acpi_name(consumer)));
270  * Deregister a power consumer.
272  * This should only be done once the consumer has been powered off.
276 acpi_pwr_deregister_consumer(ACPI_HANDLE consumer)
283     /* Find the consumer */
284     if ((pc = acpi_pwr_find_consumer(consumer)) == NULL)
287     /* Make sure the consumer's not referencing anything right now */
291     /* Pull the consumer off the list and free it */
295     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "deregistered power consumer %s\n",
296 		     acpi_name(consumer)));
303  * Set a power consumer to a particular power state.
306 acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
317     /* It's never ok to switch a non-existent consumer. */
318     if (consumer == NULL)
324     /* Find the consumer */
325     if ((pc = acpi_pwr_find_consumer(consumer)) == NULL) {
326 	if (ACPI_FAILURE(status = acpi_pwr_register_consumer(consumer)))
328 	if ((pc = acpi_pwr_find_consumer(consumer)) == NULL)
329 	    panic("acpi added power consumer but can't find it");
359 		     acpi_name(consumer), pc->ac_state, state));
371     if (ACPI_FAILURE(AcpiGetHandle(consumer, method_name, &method_handle)))
373     if (ACPI_FAILURE(AcpiGetHandle(consumer, reslist_name, &reslist_handle)))
391 	if (ACPI_FAILURE(AcpiGetHandle(consumer, "_PR0", &pr0_handle))) {
402 		acpi_name(consumer), state));
465 			  acpi_name(consumer), state));
500 acpi_pwr_wake_enable(ACPI_HANDLE consumer, int enable)
509     if (consumer == NULL)
513     if ((pc = acpi_pwr_find_consumer(consumer)) == NULL) {
514 	if (ACPI_FAILURE(status = acpi_pwr_register_consumer(consumer)))
516 	if ((pc = acpi_pwr_find_consumer(consumer)) == NULL)
517 	    panic("acpi wake added power consumer but can't find it");
521     if (acpi_parse_prw(consumer, &prw) != 0)
538  * Called to create a reference between a power consumer and a power resource
575     /* Create a reference between the consumer and resource */
578 			 "allocation failed for a power consumer reference\n"));
732  * Find a power consumer's control structure.
735 acpi_pwr_find_consumer(ACPI_HANDLE consumer)
743 	if (pc->ac_consumer == consumer)