drivers/comedi/drivers.c

34  * driver), comedi_set_hw_dev() is called automatically by the COMEDI core
133  * is zero-filled.  The low-level driver is responsible for updating its
184 	dev->driver = NULL;
206 	if (dev->driver)
207 		dev->driver->detach(dev);
272  * comedi_timeout() - Busy-wait for a driver condition to occur
277  * @context: Private context from the driver.
582  * to stop the acquisition at the driver level.
784  * a 'struct comedi_device' that the low-level comedi driver's
810 	pr_info("comedi: valid board names for %s driver are:\n",
829  * @context: Private context from the driver.
863  * __comedi_request_region() - Request an I/O region for a legacy driver
895  * comedi_request_region() - Request an I/O region for a legacy driver
931  * can also be called by a driver-specific 'detach' handler.
985 		/* driver does not support manual configuration */
987 			 "driver '%s' does not support attach using comedi_config\n",
993 	dev->driver = driv;
995 					 : dev->driver->driver_name;
1003 	/* On success, the driver module count has been incremented. */
1012  * @driver: COMEDI low-level driver for the hardware device.
1016  * low-level driver's 'auto_attach' handler to set-up the hardware and
1019  * If the 'auto_attach' handler fails, the low-level driver's 'detach'
1024  * function in the low-level driver.
1027  * post-configuration determines the driver has set the COMEDI device up
1030  * the driver's 'auto_attach' handler.
1033 		       struct comedi_driver *driver, unsigned long context)
1042 	if (!driver) {
1044 			 "BUG! %s called with NULL comedi driver\n", __func__);
1048 	if (!driver->auto_attach) {
1050 			 "BUG! comedi driver '%s' has no auto_attach handler\n",
1051 			 driver->driver_name);
1058 			 "driver '%s' could not create device.\n",
1059 			 driver->driver_name);
1065 	dev->driver = driver;
1066 	dev->board_name = dev->driver->driver_name;
1067 	ret = driver->auto_attach(dev, context);
1073 			 "driver '%s' failed to auto-configure device.\n",
1074 			 driver->driver_name);
1083 			 "driver '%s' has successfully auto-configured '%s'.\n",
1084 			 driver->driver_name, dev->board_name);
1098  * clean-up, the low-level COMEDI driver's 'detach' handler will be called.
1105  * in the low-level COMEDI driver.
1116  * comedi_driver_register() - Register a low-level COMEDI driver
1117  * @driver: Low-level COMEDI driver.
1119  * The low-level COMEDI driver is added to the list of registered COMEDI
1126 int comedi_driver_register(struct comedi_driver *driver)
1129 	driver->next = comedi_drivers;
1130 	comedi_drivers = driver;
1138  * comedi_driver_unregister() - Unregister a low-level COMEDI driver
1139  * @driver: Low-level COMEDI driver.
1141  * The low-level COMEDI driver is removed from the list of registered COMEDI
1142  * drivers.  Detaches any COMEDI devices attached to the driver, which will
1143  * result in the low-level driver's 'detach' handler being called for those
1146 void comedi_driver_unregister(struct comedi_driver *driver)
1151 	/* unlink the driver */
1153 	if (comedi_drivers == driver) {
1154 		comedi_drivers = driver->next;
1157 			if (prev->next == driver) {
1158 				prev->next = driver->next;
1165 	/* check for devices using this driver */
1173 		if (dev->attached && dev->driver == driver) {