88 static inline int smb_hc_read(struct acpi_smb_hc *hc, u8 address, u8 *data)  in smb_hc_read()  argument
90 	return ec_read(hc->offset + address, data);  in smb_hc_read()
93 static inline int smb_hc_write(struct acpi_smb_hc *hc, u8 address, u8 data)  in smb_hc_write()  argument
95 	return ec_write(hc->offset + address, data);  in smb_hc_write()
98 static int wait_transaction_complete(struct acpi_smb_hc *hc, int timeout)  in wait_transaction_complete()  argument
100 	if (wait_event_timeout(hc->wait, hc->done, msecs_to_jiffies(timeout)))  in wait_transaction_complete()
105 static int acpi_smbus_transaction(struct acpi_smb_hc *hc, u8 protocol,  in acpi_smbus_transaction()  argument
111 	if (!hc) {  in acpi_smbus_transaction()
116 	mutex_lock(&hc->lock);  in acpi_smbus_transaction()
117 	hc->done = false;  in acpi_smbus_transaction()
118 	if (smb_hc_read(hc, ACPI_SMB_PROTOCOL, &temp))  in acpi_smbus_transaction()
124 	smb_hc_write(hc, ACPI_SMB_COMMAND, command);  in acpi_smbus_transaction()
126 		smb_hc_write(hc, ACPI_SMB_BLOCK_COUNT, length);  in acpi_smbus_transaction()
128 			smb_hc_write(hc, ACPI_SMB_DATA + i, data[i]);  in acpi_smbus_transaction()
130 	smb_hc_write(hc, ACPI_SMB_ADDRESS, address << 1);  in acpi_smbus_transaction()
131 	smb_hc_write(hc, ACPI_SMB_PROTOCOL, protocol);  in acpi_smbus_transaction()
136 	ret = wait_transaction_complete(hc, 1000);  in acpi_smbus_transaction()
148 		if (smb_hc_read(hc, ACPI_SMB_BLOCK_COUNT, &sz)) {  in acpi_smbus_transaction()
156 		smb_hc_read(hc, ACPI_SMB_DATA + i, &data[i]);  in acpi_smbus_transaction()
158 	mutex_unlock(&hc->lock);  in acpi_smbus_transaction()
162 int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address,  in acpi_smbus_read()  argument
165 	return acpi_smbus_transaction(hc, protocol, address, command, data, 0);  in acpi_smbus_read()
170 int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 address,  in acpi_smbus_write()  argument
173 	return acpi_smbus_transaction(hc, protocol, address, command, data, length);  in acpi_smbus_write()
178 int acpi_smbus_register_callback(struct acpi_smb_hc *hc,  in acpi_smbus_register_callback()  argument
181 	mutex_lock(&hc->lock);  in acpi_smbus_register_callback()
182 	hc->callback = callback;  in acpi_smbus_register_callback()
183 	hc->context = context;  in acpi_smbus_register_callback()
184 	mutex_unlock(&hc->lock);  in acpi_smbus_register_callback()
190 int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc)  in acpi_smbus_unregister_callback()  argument
192 	mutex_lock(&hc->lock);  in acpi_smbus_unregister_callback()
193 	hc->callback = NULL;  in acpi_smbus_unregister_callback()
194 	hc->context = NULL;  in acpi_smbus_unregister_callback()
195 	mutex_unlock(&hc->lock);  in acpi_smbus_unregister_callback()
204 	struct acpi_smb_hc *hc = context;  in acpi_smbus_callback()  local
205 	if (hc->callback)  in acpi_smbus_callback()
206 		hc->callback(hc->context);  in acpi_smbus_callback()
211 	struct acpi_smb_hc *hc = context;  in smbus_alarm()  local
214 	if (smb_hc_read(hc, ACPI_SMB_STATUS, &status.raw))  in smbus_alarm()
218 		hc->done = true;  in smbus_alarm()
219 		wake_up(&hc->wait);  in smbus_alarm()
223 	mutex_lock(&hc->lock);  in smbus_alarm()
224 	smb_hc_read(hc, ACPI_SMB_ALARM_ADDRESS, &address);  in smbus_alarm()
226 	smb_hc_write(hc, ACPI_SMB_STATUS, status.raw);  in smbus_alarm()
233 					acpi_smbus_callback, hc);  in smbus_alarm()
235 	mutex_unlock(&hc->lock);  in smbus_alarm()
249 	struct acpi_smb_hc *hc;  in acpi_smbus_hc_add()  local
263 	hc = kzalloc(sizeof(struct acpi_smb_hc), GFP_KERNEL);  in acpi_smbus_hc_add()
264 	if (!hc)  in acpi_smbus_hc_add()
266 	mutex_init(&hc->lock);  in acpi_smbus_hc_add()
267 	init_waitqueue_head(&hc->wait);  in acpi_smbus_hc_add()
269 	hc->ec = acpi_driver_data(acpi_dev_parent(device));  in acpi_smbus_hc_add()
270 	hc->offset = (val >> 8) & 0xff;  in acpi_smbus_hc_add()
271 	hc->query_bit = val & 0xff;  in acpi_smbus_hc_add()
272 	device->driver_data = hc;  in acpi_smbus_hc_add()
274 	acpi_ec_add_query_handler(hc->ec, hc->query_bit, NULL, smbus_alarm, hc);  in acpi_smbus_hc_add()
276 		 hc->offset, hc->query_bit);  in acpi_smbus_hc_add()
285 	struct acpi_smb_hc *hc;  in acpi_smbus_hc_remove()  local
290 	hc = acpi_driver_data(device);  in acpi_smbus_hc_remove()
291 	acpi_ec_remove_query_handler(hc->ec, hc->query_bit);  in acpi_smbus_hc_remove()
293 	kfree(hc);  in acpi_smbus_hc_remove()