72 /* This structure holds private data for each USBTMC device. One copy is
105 	struct usbtmc_device_data *data = to_usbtmc_data(kref);  in usbtmc_delete()  local
107 	usb_put_dev(data->usb_dev);  in usbtmc_delete()
108 	kfree(data);  in usbtmc_delete()
114 	struct usbtmc_device_data *data;  in usbtmc_open()  local
125 	data = usb_get_intfdata(intf);  in usbtmc_open()
126 	kref_get(&data->kref);  in usbtmc_open()
128 	/* Store pointer in file structure's private data field */  in usbtmc_open()
129 	filp->private_data = data;  in usbtmc_open()
137 	struct usbtmc_device_data *data = file->private_data;  in usbtmc_release()  local
139 	kref_put(&data->kref, usbtmc_delete);  in usbtmc_release()
143 static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data)  in usbtmc_ioctl_abort_bulk_in()  argument
153 	dev = &data->intf->dev;  in usbtmc_ioctl_abort_bulk_in()
158 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
159 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_abort_bulk_in()
162 			     data->bTag_last_read, data->bulk_in,  in usbtmc_ioctl_abort_bulk_in()
185 	current_setting = data->intf->cur_altsetting;  in usbtmc_ioctl_abort_bulk_in()
188 			data->bulk_in)  in usbtmc_ioctl_abort_bulk_in()
197 	dev_dbg(&data->intf->dev, "wMaxPacketSize is %d\n", max_size);  in usbtmc_ioctl_abort_bulk_in()
204 		rv = usb_bulk_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
205 				  usb_rcvbulkpipe(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
206 						  data->bulk_in),  in usbtmc_ioctl_abort_bulk_in()
229 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
230 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_abort_bulk_in()
233 			     0, data->bulk_in, buffer, 0x08,  in usbtmc_ioctl_abort_bulk_in()
258 			rv = usb_bulk_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
259 					  usb_rcvbulkpipe(data->usb_dev,  in usbtmc_ioctl_abort_bulk_in()
260 							  data->bulk_in),  in usbtmc_ioctl_abort_bulk_in()
288 static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data)  in usbtmc_ioctl_abort_bulk_out()  argument
295 	dev = &data->intf->dev;  in usbtmc_ioctl_abort_bulk_out()
301 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_out()
302 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_abort_bulk_out()
305 			     data->bTag_last_write, data->bulk_out,  in usbtmc_ioctl_abort_bulk_out()
325 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_abort_bulk_out()
326 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_abort_bulk_out()
329 			     0, data->bulk_out, buffer, 0x08,  in usbtmc_ioctl_abort_bulk_out()
350 	rv = usb_clear_halt(data->usb_dev,  in usbtmc_ioctl_abort_bulk_out()
351 			    usb_sndbulkpipe(data->usb_dev, data->bulk_out));  in usbtmc_ioctl_abort_bulk_out()
367 	struct usbtmc_device_data *data;  in usbtmc_read()  local
377 	/* Get pointer to private data structure */  in usbtmc_read()
378 	data = filp->private_data;  in usbtmc_read()
379 	dev = &data->intf->dev;  in usbtmc_read()
385 	mutex_lock(&data->io_mutex);  in usbtmc_read()
386 	if (data->zombie) {  in usbtmc_read()
404 		buffer[1] = data->bTag;  in usbtmc_read()
405 		buffer[2] = ~(data->bTag);  in usbtmc_read()
411 		buffer[8] = data->TermCharEnabled * 2;  in usbtmc_read()
413 		buffer[9] = data->TermChar;  in usbtmc_read()
418 		retval = usb_bulk_msg(data->usb_dev,  in usbtmc_read()
419 				      usb_sndbulkpipe(data->usb_dev,  in usbtmc_read()
420 						      data->bulk_out),  in usbtmc_read()
424 		data->bTag_last_write = data->bTag;  in usbtmc_read()
427 		data->bTag++;  in usbtmc_read()
428 		if (!data->bTag)  in usbtmc_read()
429 			(data->bTag)++;  in usbtmc_read()
433 			if (data->auto_abort)  in usbtmc_read()
434 				usbtmc_ioctl_abort_bulk_out(data);  in usbtmc_read()
439 		retval = usb_bulk_msg(data->usb_dev,  in usbtmc_read()
440 				      usb_rcvbulkpipe(data->usb_dev,  in usbtmc_read()
441 						      data->bulk_in),  in usbtmc_read()
446 		data->bTag_last_read = data->bTag;  in usbtmc_read()
449 			dev_err(dev, "Unable to read data, error %d\n", retval);  in usbtmc_read()
450 			if (data->auto_abort)  in usbtmc_read()
451 				usbtmc_ioctl_abort_bulk_in(data);  in usbtmc_read()
473 		/* Bound amount of data received by amount of data requested */  in usbtmc_read()
497 	mutex_unlock(&data->io_mutex);  in usbtmc_read()
505 	struct usbtmc_device_data *data;  in usbtmc_write()  local
514 	data = filp->private_data;  in usbtmc_write()
520 	mutex_lock(&data->io_mutex);  in usbtmc_write()
521 	if (data->zombie) {  in usbtmc_write()
540 		buffer[1] = data->bTag;  in usbtmc_write()
541 		buffer[2] = ~(data->bTag);  in usbtmc_write()
561 			retval = usb_bulk_msg(data->usb_dev,  in usbtmc_write()
562 					      usb_sndbulkpipe(data->usb_dev,  in usbtmc_write()
563 							      data->bulk_out),  in usbtmc_write()
571 		data->bTag_last_write = data->bTag;  in usbtmc_write()
572 		data->bTag++;  in usbtmc_write()
574 		if (!data->bTag)  in usbtmc_write()
575 			data->bTag++;  in usbtmc_write()
578 			dev_err(&data->intf->dev,  in usbtmc_write()
579 				"Unable to send data, error %d\n", retval);  in usbtmc_write()
580 			if (data->auto_abort)  in usbtmc_write()
581 				usbtmc_ioctl_abort_bulk_out(data);  in usbtmc_write()
591 	mutex_unlock(&data->io_mutex);  in usbtmc_write()
596 static int usbtmc_ioctl_clear(struct usbtmc_device_data *data)  in usbtmc_ioctl_clear()  argument
607 	dev = &data->intf->dev;  in usbtmc_ioctl_clear()
615 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_clear()
616 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_clear()
634 	current_setting = data->intf->cur_altsetting;  in usbtmc_ioctl_clear()
637 		if (desc->bEndpointAddress == data->bulk_in)  in usbtmc_ioctl_clear()
655 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_clear()
656 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_clear()
680 			rv = usb_bulk_msg(data->usb_dev,  in usbtmc_ioctl_clear()
681 					  usb_rcvbulkpipe(data->usb_dev,  in usbtmc_ioctl_clear()
682 							  data->bulk_in),  in usbtmc_ioctl_clear()
706 	rv = usb_clear_halt(data->usb_dev,  in usbtmc_ioctl_clear()
707 			    usb_sndbulkpipe(data->usb_dev, data->bulk_out));  in usbtmc_ioctl_clear()
719 static int usbtmc_ioctl_clear_out_halt(struct usbtmc_device_data *data)  in usbtmc_ioctl_clear_out_halt()  argument
728 	rv = usb_clear_halt(data->usb_dev,  in usbtmc_ioctl_clear_out_halt()
729 			    usb_sndbulkpipe(data->usb_dev, data->bulk_out));  in usbtmc_ioctl_clear_out_halt()
732 		dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",  in usbtmc_ioctl_clear_out_halt()
743 static int usbtmc_ioctl_clear_in_halt(struct usbtmc_device_data *data)  in usbtmc_ioctl_clear_in_halt()  argument
752 	rv = usb_clear_halt(data->usb_dev,  in usbtmc_ioctl_clear_in_halt()
753 			    usb_rcvbulkpipe(data->usb_dev, data->bulk_in));  in usbtmc_ioctl_clear_in_halt()
756 		dev_err(&data->usb_dev->dev, "usb_control_msg returned %d\n",  in usbtmc_ioctl_clear_in_halt()
767 static int get_capabilities(struct usbtmc_device_data *data)  in get_capabilities()  argument
769 	struct device *dev = &data->usb_dev->dev;  in get_capabilities()
777 	rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0),  in get_capabilities()
797 	data->capabilities.interface_capabilities = buffer[4];  in get_capabilities()
798 	data->capabilities.device_capabilities = buffer[5];  in get_capabilities()
799 	data->capabilities.usb488_interface_capabilities = buffer[14];  in get_capabilities()
800 	data->capabilities.usb488_device_capabilities = buffer[15];  in get_capabilities()
813 	struct usbtmc_device_data *data = usb_get_intfdata(intf);	\
815 	return sprintf(buf, "%d\n", data->capabilities.name);		\
840 	struct usbtmc_device_data *data = usb_get_intfdata(intf);  in show_TermChar()  local
842 	return sprintf(buf, "%c\n", data->TermChar);  in show_TermChar()
850 	struct usbtmc_device_data *data = usb_get_intfdata(intf);  in store_TermChar()  local
854 	data->TermChar = buf[0];  in store_TermChar()
864 	struct usbtmc_device_data *data = usb_get_intfdata(intf);	\
866 	return sprintf(buf, "%d\n", data->name);			\
873 	struct usbtmc_device_data *data = usb_get_intfdata(intf);	\
880 	data->name = val;						\
902 static int usbtmc_ioctl_indicator_pulse(struct usbtmc_device_data *data)  in usbtmc_ioctl_indicator_pulse()  argument
908 	dev = &data->intf->dev;  in usbtmc_ioctl_indicator_pulse()
914 	rv = usb_control_msg(data->usb_dev,  in usbtmc_ioctl_indicator_pulse()
915 			     usb_rcvctrlpipe(data->usb_dev, 0),  in usbtmc_ioctl_indicator_pulse()
941 	struct usbtmc_device_data *data;  in usbtmc_ioctl()  local
944 	data = file->private_data;  in usbtmc_ioctl()
945 	mutex_lock(&data->io_mutex);  in usbtmc_ioctl()
946 	if (data->zombie) {  in usbtmc_ioctl()
953 		retval = usbtmc_ioctl_clear_out_halt(data);  in usbtmc_ioctl()
957 		retval = usbtmc_ioctl_clear_in_halt(data);  in usbtmc_ioctl()
961 		retval = usbtmc_ioctl_indicator_pulse(data);  in usbtmc_ioctl()
965 		retval = usbtmc_ioctl_clear(data);  in usbtmc_ioctl()
969 		retval = usbtmc_ioctl_abort_bulk_out(data);  in usbtmc_ioctl()
973 		retval = usbtmc_ioctl_abort_bulk_in(data);  in usbtmc_ioctl()
978 	mutex_unlock(&data->io_mutex);  in usbtmc_ioctl()
1002 	struct usbtmc_device_data *data;  in usbtmc_probe()  local
1010 	data = kmalloc(sizeof(struct usbtmc_device_data), GFP_KERNEL);  in usbtmc_probe()
1011 	if (!data) {  in usbtmc_probe()
1016 	data->intf = intf;  in usbtmc_probe()
1017 	data->id = id;  in usbtmc_probe()
1018 	data->usb_dev = usb_get_dev(interface_to_usbdev(intf));  in usbtmc_probe()
1019 	usb_set_intfdata(intf, data);  in usbtmc_probe()
1020 	kref_init(&data->kref);  in usbtmc_probe()
1021 	mutex_init(&data->io_mutex);  in usbtmc_probe()
1022 	data->zombie = 0;  in usbtmc_probe()
1025 	data->bTag	= 1;  in usbtmc_probe()
1026 	data->TermCharEnabled = 0;  in usbtmc_probe()
1027 	data->TermChar = '\n';  in usbtmc_probe()
1030 	iface_desc = data->intf->cur_altsetting;  in usbtmc_probe()
1037 			data->bulk_in = endpoint->bEndpointAddress;  in usbtmc_probe()
1039 				data->bulk_in);  in usbtmc_probe()
1049 			data->bulk_out = endpoint->bEndpointAddress;  in usbtmc_probe()
1051 				data->bulk_out);  in usbtmc_probe()
1056 	retcode = get_capabilities(data);  in usbtmc_probe()
1079 	kref_put(&data->kref, usbtmc_delete);  in usbtmc_probe()
1085 	struct usbtmc_device_data *data;  in usbtmc_disconnect()  local
1089 	data = usb_get_intfdata(intf);  in usbtmc_disconnect()
1093 	mutex_lock(&data->io_mutex);  in usbtmc_disconnect()
1094 	data->zombie = 1;  in usbtmc_disconnect()
1095 	mutex_unlock(&data->io_mutex);  in usbtmc_disconnect()
1096 	kref_put(&data->kref, usbtmc_delete);  in usbtmc_disconnect()