98 	struct comedi_subdevice *s;  in comedi_alloc_subdevices()  local
104 	s = kzalloc_objs(*s, num_subdevices);  in comedi_alloc_subdevices()
105 	if (!s)  in comedi_alloc_subdevices()
107 	dev->subdevices = s;  in comedi_alloc_subdevices()
111 		s = &dev->subdevices[i];  in comedi_alloc_subdevices()
112 		s->device = dev;  in comedi_alloc_subdevices()
113 		s->index = i;  in comedi_alloc_subdevices()
114 		s->async_dma_dir = DMA_NONE;  in comedi_alloc_subdevices()
115 		spin_lock_init(&s->spin_lock);  in comedi_alloc_subdevices()
116 		s->minor = -1;  in comedi_alloc_subdevices()
140 int comedi_alloc_subdev_readback(struct comedi_subdevice *s)  in comedi_alloc_subdev_readback()  argument
142 	if (!s->n_chan)  in comedi_alloc_subdev_readback()
145 	s->readback = kcalloc(s->n_chan, sizeof(*s->readback), GFP_KERNEL);  in comedi_alloc_subdev_readback()
146 	if (!s->readback)  in comedi_alloc_subdev_readback()
149 	if (!s->insn_read)  in comedi_alloc_subdev_readback()
150 		s->insn_read = comedi_readback_insn_read;  in comedi_alloc_subdev_readback()
159 	struct comedi_subdevice *s;  in comedi_device_detach_cleanup()  local
165 			s = &dev->subdevices[i];  in comedi_device_detach_cleanup()
166 			if (comedi_can_auto_free_spriv(s))  in comedi_device_detach_cleanup()
167 				kfree(s->private);  in comedi_device_detach_cleanup()
168 			comedi_free_subdevice_minor(s);  in comedi_device_detach_cleanup()
169 			if (s->async) {  in comedi_device_detach_cleanup()
170 				comedi_buf_alloc(dev, s, 0);  in comedi_device_detach_cleanup()
171 				kfree(s->async);  in comedi_device_detach_cleanup()
173 			kfree(s->readback);  in comedi_device_detach_cleanup()
219 static int poll_invalid(struct comedi_device *dev, struct comedi_subdevice *s)  in poll_invalid()  argument
237 int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,  in insn_inval()  argument
261 			      struct comedi_subdevice *s,  in comedi_readback_insn_read()  argument
268 	if (!s->readback)  in comedi_readback_insn_read()
272 		data[i] = s->readback[chan];  in comedi_readback_insn_read()
296 		   struct comedi_subdevice *s,  in comedi_timeout()  argument
299 			     struct comedi_subdevice *s,  in comedi_timeout()
308 		ret = cb(dev, s, insn, context);  in comedi_timeout()
344 			   struct comedi_subdevice *s,  in comedi_dio_insn_config()  argument
356 		s->io_bits &= ~mask;  in comedi_dio_insn_config()
360 		s->io_bits |= mask;  in comedi_dio_insn_config()
364 		data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;  in comedi_dio_insn_config()
389 unsigned int comedi_dio_update_state(struct comedi_subdevice *s,  in comedi_dio_update_state()  argument
392 	unsigned int chanmask = (s->n_chan < 32) ? ((1U << s->n_chan) - 1)  in comedi_dio_update_state()
398 		s->state &= ~mask;  in comedi_dio_update_state()
399 		s->state |= (bits & mask);  in comedi_dio_update_state()
423 unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,  in comedi_bytes_per_scan_cmd()  argument
429 	switch (s->type) {  in comedi_bytes_per_scan_cmd()
433 		bits_per_sample = 8 * comedi_bytes_per_sample(s);  in comedi_bytes_per_scan_cmd()
440 	return comedi_samples_to_bytes(s, num_samples);  in comedi_bytes_per_scan_cmd()
444 static unsigned int _comedi_bytes_per_scan(struct comedi_subdevice *s)  in _comedi_bytes_per_scan()  argument
446 	struct comedi_cmd *cmd = &s->async->cmd;  in _comedi_bytes_per_scan()
448 	return comedi_bytes_per_scan_cmd(s, cmd);  in _comedi_bytes_per_scan()
466 unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s)  in comedi_bytes_per_scan()  argument
470 	if (comedi_get_is_subdevice_running(s)) {  in comedi_bytes_per_scan()
471 		num_bytes = _comedi_bytes_per_scan(s);  in comedi_bytes_per_scan()
472 		comedi_put_is_subdevice_running(s);  in comedi_bytes_per_scan()
475 		num_bytes = comedi_samples_to_bytes(s, 1);  in comedi_bytes_per_scan()
481 static unsigned int __comedi_nscans_left(struct comedi_subdevice *s,  in __comedi_nscans_left()  argument
484 	struct comedi_async *async = s->async;  in __comedi_nscans_left()
499 static unsigned int _comedi_nscans_left(struct comedi_subdevice *s,  in _comedi_nscans_left()  argument
503 		unsigned int nbytes = _comedi_buf_read_n_available(s);  in _comedi_nscans_left()
505 		nscans = nbytes / _comedi_bytes_per_scan(s);  in _comedi_nscans_left()
507 	return __comedi_nscans_left(s, nscans);  in _comedi_nscans_left()
524 unsigned int comedi_nscans_left(struct comedi_subdevice *s,  in comedi_nscans_left()  argument
527 	if (comedi_get_is_subdevice_running(s)) {  in comedi_nscans_left()
528 		nscans = _comedi_nscans_left(s, nscans);  in comedi_nscans_left()
529 		comedi_put_is_subdevice_running(s);  in comedi_nscans_left()
537 static unsigned int _comedi_nsamples_left(struct comedi_subdevice *s,  in _comedi_nsamples_left()  argument
540 	struct comedi_async *async = s->async;  in _comedi_nsamples_left()
548 	scans_left = __comedi_nscans_left(s, cmd->stop_arg);  in _comedi_nsamples_left()
553 		comedi_bytes_to_samples(s, async->scan_progress);  in _comedi_nsamples_left()
568 unsigned int comedi_nsamples_left(struct comedi_subdevice *s,  in comedi_nsamples_left()  argument
571 	if (comedi_get_is_subdevice_running(s)) {  in comedi_nsamples_left()
572 		nsamples = _comedi_nsamples_left(s, nsamples);  in comedi_nsamples_left()
573 		comedi_put_is_subdevice_running(s);  in comedi_nsamples_left()
581 void _comedi_inc_scan_progress(struct comedi_subdevice *s,  in _comedi_inc_scan_progress()  argument
584 	struct comedi_async *async = s->async;  in _comedi_inc_scan_progress()
586 	unsigned int scan_length = _comedi_bytes_per_scan(s);  in _comedi_inc_scan_progress()
589 	if (!(s->subdev_flags & SDF_PACKED)) {  in _comedi_inc_scan_progress()
590 		async->cur_chan += comedi_bytes_to_samples(s, num_bytes);  in _comedi_inc_scan_progress()
618 void comedi_inc_scan_progress(struct comedi_subdevice *s,  in comedi_inc_scan_progress()  argument
621 	if (comedi_get_is_subdevice_running(s)) {  in comedi_inc_scan_progress()
622 		_comedi_inc_scan_progress(s, num_bytes);  in comedi_inc_scan_progress()
623 		comedi_put_is_subdevice_running(s);  in comedi_inc_scan_progress()
629 					  struct comedi_subdevice *s)  in _comedi_handle_events()  argument
631 	unsigned int events = s->async->events;  in _comedi_handle_events()
636 	if ((events & COMEDI_CB_CANCEL_MASK) && s->cancel)  in _comedi_handle_events()
637 		s->cancel(dev, s);  in _comedi_handle_events()
639 	_comedi_event(dev, s);  in _comedi_handle_events()
661 				  struct comedi_subdevice *s)  in comedi_handle_events()  argument
665 	if (comedi_get_is_subdevice_running(s)) {  in comedi_handle_events()
666 		events = _comedi_handle_events(dev, s);  in comedi_handle_events()
667 		comedi_put_is_subdevice_running(s);  in comedi_handle_events()
676 				struct comedi_subdevice *s,  in insn_rw_emulate_bits()  argument
695 		if (!(s->subdev_flags & SDF_WRITABLE))  in insn_rw_emulate_bits()
703 		ret = s->insn_bits(dev, s, &_insn, _data);  in insn_rw_emulate_bits()
715 					    struct comedi_subdevice *s)  in __comedi_device_postconfig_async()  argument
722 	if ((s->subdev_flags & (SDF_CMD_READ | SDF_CMD_WRITE)) == 0) {  in __comedi_device_postconfig_async()
727 	if (!s->do_cmdtest) {  in __comedi_device_postconfig_async()
732 	if (!s->cancel)  in __comedi_device_postconfig_async()
742 	s->async = async;  in __comedi_device_postconfig_async()
749 	if (comedi_buf_alloc(dev, s, buf_size) < 0) {  in __comedi_device_postconfig_async()
753 	if (s->buf_change) {  in __comedi_device_postconfig_async()
754 		ret = s->buf_change(dev, s);  in __comedi_device_postconfig_async()
759 	comedi_alloc_subdevice_minor(s);  in __comedi_device_postconfig_async()
766 	struct comedi_subdevice *s;  in __comedi_device_postconfig()  local
778 		s = &dev->subdevices[i];  in __comedi_device_postconfig()
780 		if (s->type == COMEDI_SUBD_UNUSED)  in __comedi_device_postconfig()
783 		if (s->type == COMEDI_SUBD_DO) {  in __comedi_device_postconfig()
784 			if (s->n_chan < 32)  in __comedi_device_postconfig()
785 				s->io_bits = (1U << s->n_chan) - 1;  in __comedi_device_postconfig()
787 				s->io_bits = 0xffffffff;  in __comedi_device_postconfig()
790 		if (s->len_chanlist == 0)  in __comedi_device_postconfig()
791 			s->len_chanlist = 1;  in __comedi_device_postconfig()
793 		if (s->do_cmd) {  in __comedi_device_postconfig()
794 			ret = __comedi_device_postconfig_async(dev, s);  in __comedi_device_postconfig()
799 		if (!s->range_table && !s->range_table_list)  in __comedi_device_postconfig()
800 			s->range_table = &range_unknown;  in __comedi_device_postconfig()
802 		if (!s->insn_read && s->insn_bits)  in __comedi_device_postconfig()
803 			s->insn_read = insn_rw_emulate_bits;  in __comedi_device_postconfig()
804 		if (!s->insn_write && s->insn_bits)  in __comedi_device_postconfig()
805 			s->insn_write = insn_rw_emulate_bits;  in __comedi_device_postconfig()
807 		if (!s->insn_read)  in __comedi_device_postconfig()
808 			s->insn_read = insn_inval;  in __comedi_device_postconfig()
809 		if (!s->insn_write)  in __comedi_device_postconfig()
810 			s->insn_write = insn_inval;  in __comedi_device_postconfig()
811 		if (!s->insn_bits)  in __comedi_device_postconfig()
812 			s->insn_bits = insn_inval;  in __comedi_device_postconfig()
813 		if (!s->insn_config)  in __comedi_device_postconfig()
814 			s->insn_config = insn_inval;  in __comedi_device_postconfig()
816 		if (!s->poll)  in __comedi_device_postconfig()
817 			s->poll = poll_invalid;  in __comedi_device_postconfig()