41 static struct pmi_data *data;  variable
48 	spin_lock(&data->pmi_spinlock);  in pmi_irq_handler()
50 	type = ioread8(data->pmi_reg + PMI_READ_TYPE);  in pmi_irq_handler()
53 	if (type & PMI_ACK && !data->completion) {  in pmi_irq_handler()
59 	if (data->completion && !(type & PMI_ACK)) {  in pmi_irq_handler()
65 	data->msg.type = type;  in pmi_irq_handler()
66 	data->msg.data0 = ioread8(data->pmi_reg + PMI_READ_DATA0);  in pmi_irq_handler()
67 	data->msg.data1 = ioread8(data->pmi_reg + PMI_READ_DATA1);  in pmi_irq_handler()
68 	data->msg.data2 = ioread8(data->pmi_reg + PMI_READ_DATA2);  in pmi_irq_handler()
71 	spin_unlock(&data->pmi_spinlock);  in pmi_irq_handler()
78 	if (data->msg.type & PMI_ACK) {  in pmi_irq_handler()
79 		complete(data->completion);  in pmi_irq_handler()
84 	schedule_work(&data->work);  in pmi_irq_handler()
104 	spin_lock(&data->handler_spinlock);  in pmi_notify_handlers()
105 	list_for_each_entry(handler, &data->handler, node) {  in pmi_notify_handlers()
107 		if (handler->type == data->msg.type)  in pmi_notify_handlers()
108 			handler->handle_pmi_message(data->msg);  in pmi_notify_handlers()
110 	spin_unlock(&data->handler_spinlock);  in pmi_notify_handlers()
118 	if (data) {  in pmi_of_probe()
124 	data = kzalloc(sizeof(struct pmi_data), GFP_KERNEL);  in pmi_of_probe()
125 	if (!data) {  in pmi_of_probe()
131 	data->pmi_reg = of_iomap(np, 0);  in pmi_of_probe()
132 	if (!data->pmi_reg) {  in pmi_of_probe()
138 	INIT_LIST_HEAD(&data->handler);  in pmi_of_probe()
140 	mutex_init(&data->msg_mutex);  in pmi_of_probe()
141 	spin_lock_init(&data->pmi_spinlock);  in pmi_of_probe()
142 	spin_lock_init(&data->handler_spinlock);  in pmi_of_probe()
144 	INIT_WORK(&data->work, pmi_notify_handlers);  in pmi_of_probe()
146 	data->dev = dev;  in pmi_of_probe()
148 	data->irq = irq_of_parse_and_map(np, 0);  in pmi_of_probe()
149 	if (!data->irq) {  in pmi_of_probe()
155 	rc = request_irq(data->irq, pmi_irq_handler, 0, "pmi", NULL);  in pmi_of_probe()
158 				data->irq, rc);  in pmi_of_probe()
162 	printk(KERN_INFO "pmi: found pmi device at addr %p.\n", data->pmi_reg);  in pmi_of_probe()
167 	iounmap(data->pmi_reg);  in pmi_of_probe()
170 	kfree(data);  in pmi_of_probe()
180 	free_irq(data->irq, NULL);  in pmi_of_remove()
181 	iounmap(data->pmi_reg);  in pmi_of_remove()
183 	spin_lock(&data->handler_spinlock);  in pmi_of_remove()
185 	list_for_each_entry_safe(handler, tmp, &data->handler, node)  in pmi_of_remove()
188 	spin_unlock(&data->handler_spinlock);  in pmi_of_remove()
190 	kfree(data);  in pmi_of_remove()
191 	data = NULL;  in pmi_of_remove()
209 	if (!data)  in pmi_send_message()
212 	mutex_lock(&data->msg_mutex);  in pmi_send_message()
214 	data->msg = msg;  in pmi_send_message()
217 	data->completion = &completion;  in pmi_send_message()
219 	spin_lock_irqsave(&data->pmi_spinlock, flags);  in pmi_send_message()
220 	iowrite8(msg.data0, data->pmi_reg + PMI_WRITE_DATA0);  in pmi_send_message()
221 	iowrite8(msg.data1, data->pmi_reg + PMI_WRITE_DATA1);  in pmi_send_message()
222 	iowrite8(msg.data2, data->pmi_reg + PMI_WRITE_DATA2);  in pmi_send_message()
223 	iowrite8(msg.type, data->pmi_reg + PMI_WRITE_TYPE);  in pmi_send_message()
224 	spin_unlock_irqrestore(&data->pmi_spinlock, flags);  in pmi_send_message()
228 	wait_for_completion_interruptible_timeout(data->completion,  in pmi_send_message()
231 	data->completion = NULL;  in pmi_send_message()
233 	mutex_unlock(&data->msg_mutex);  in pmi_send_message()
241 	if (!data)  in pmi_register_handler()
244 	spin_lock(&data->handler_spinlock);  in pmi_register_handler()
245 	list_add_tail(&handler->node, &data->handler);  in pmi_register_handler()
246 	spin_unlock(&data->handler_spinlock);  in pmi_register_handler()
254 	if (!data)  in pmi_unregister_handler()
259 	spin_lock(&data->handler_spinlock);  in pmi_unregister_handler()
261 	spin_unlock(&data->handler_spinlock);  in pmi_unregister_handler()