Lines Matching refs:buffer
110 struct iio_buffer *rb = ib->buffer; in iio_buffer_read()
179 struct iio_buffer *rb = ib->buffer; in iio_buffer_write()
239 struct iio_buffer *rb = ib->buffer; in iio_buffer_poll()
265 struct iio_buffer *rb = ib->buffer; in iio_buffer_read_wrapper()
278 struct iio_buffer *rb = ib->buffer; in iio_buffer_write_wrapper()
291 struct iio_buffer *rb = ib->buffer; in iio_buffer_poll_wrapper()
310 struct iio_buffer *buffer; in iio_buffer_wakeup_poll() local
314 buffer = iio_dev_opaque->attached_buffers[i]; in iio_buffer_wakeup_poll()
315 wake_up(&buffer->pollq); in iio_buffer_wakeup_poll()
319 int iio_pop_from_buffer(struct iio_buffer *buffer, void *data) in iio_pop_from_buffer() argument
321 if (!buffer || !buffer->access || !buffer->access->remove_from) in iio_pop_from_buffer()
324 return buffer->access->remove_from(buffer, data); in iio_pop_from_buffer()
328 void iio_buffer_init(struct iio_buffer *buffer) in iio_buffer_init() argument
330 INIT_LIST_HEAD(&buffer->demux_list); in iio_buffer_init()
331 INIT_LIST_HEAD(&buffer->buffer_list); in iio_buffer_init()
332 init_waitqueue_head(&buffer->pollq); in iio_buffer_init()
333 kref_init(&buffer->ref); in iio_buffer_init()
334 if (!buffer->watermark) in iio_buffer_init()
335 buffer->watermark = 1; in iio_buffer_init()
342 struct iio_buffer *buffer; in iio_device_detach_buffers() local
346 buffer = iio_dev_opaque->attached_buffers[i]; in iio_device_detach_buffers()
347 iio_buffer_put(buffer); in iio_device_detach_buffers()
396 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_scan_el_show() local
400 buffer->scan_mask); in iio_scan_el_show()
446 struct iio_buffer *buffer, int bit) in iio_scan_mask_set() argument
459 bitmap_copy(trialmask, buffer->scan_mask, indio_dev->masklength); in iio_scan_mask_set()
472 bitmap_copy(buffer->scan_mask, trialmask, indio_dev->masklength); in iio_scan_mask_set()
483 static int iio_scan_mask_clear(struct iio_buffer *buffer, int bit) in iio_scan_mask_clear() argument
485 clear_bit(bit, buffer->scan_mask); in iio_scan_mask_clear()
490 struct iio_buffer *buffer, int bit) in iio_scan_mask_query() argument
495 if (!buffer->scan_mask) in iio_scan_mask_query()
499 return !!test_bit(bit, buffer->scan_mask); in iio_scan_mask_query()
511 struct iio_buffer *buffer = this_attr->buffer; in iio_scan_el_store() local
517 if (iio_buffer_is_active(buffer)) { in iio_scan_el_store()
521 ret = iio_scan_mask_query(indio_dev, buffer, this_attr->address); in iio_scan_el_store()
525 ret = iio_scan_mask_clear(buffer, this_attr->address); in iio_scan_el_store()
529 ret = iio_scan_mask_set(indio_dev, buffer, this_attr->address); in iio_scan_el_store()
545 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_scan_el_ts_show() local
547 return sysfs_emit(buf, "%d\n", buffer->scan_timestamp); in iio_scan_el_ts_show()
557 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_scan_el_ts_store() local
565 if (iio_buffer_is_active(buffer)) { in iio_scan_el_ts_store()
569 buffer->scan_timestamp = state; in iio_scan_el_ts_store()
577 struct iio_buffer *buffer, in iio_buffer_add_channel_sysfs() argument
589 buffer, in iio_buffer_add_channel_sysfs()
590 &buffer->buffer_attr_list); in iio_buffer_add_channel_sysfs()
601 buffer, in iio_buffer_add_channel_sysfs()
602 &buffer->buffer_attr_list); in iio_buffer_add_channel_sysfs()
614 buffer, in iio_buffer_add_channel_sysfs()
615 &buffer->buffer_attr_list); in iio_buffer_add_channel_sysfs()
624 buffer, in iio_buffer_add_channel_sysfs()
625 &buffer->buffer_attr_list); in iio_buffer_add_channel_sysfs()
637 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_read_length() local
639 return sysfs_emit(buf, "%d\n", buffer->length); in iio_buffer_read_length()
647 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_write_length() local
655 if (val == buffer->length) in iio_buffer_write_length()
659 if (iio_buffer_is_active(buffer)) { in iio_buffer_write_length()
662 buffer->access->set_length(buffer, val); in iio_buffer_write_length()
667 if (buffer->length && buffer->length < buffer->watermark) in iio_buffer_write_length()
668 buffer->watermark = buffer->length; in iio_buffer_write_length()
679 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_show_enable() local
681 return sysfs_emit(buf, "%d\n", iio_buffer_is_active(buffer)); in iio_buffer_show_enable()
732 struct iio_buffer *buffer) in iio_buffer_activate() argument
736 iio_buffer_get(buffer); in iio_buffer_activate()
737 list_add(&buffer->buffer_list, &iio_dev_opaque->buffer_list); in iio_buffer_activate()
740 static void iio_buffer_deactivate(struct iio_buffer *buffer) in iio_buffer_deactivate() argument
742 list_del_init(&buffer->buffer_list); in iio_buffer_deactivate()
743 wake_up_interruptible(&buffer->pollq); in iio_buffer_deactivate()
744 iio_buffer_put(buffer); in iio_buffer_deactivate()
750 struct iio_buffer *buffer, *_buffer; in iio_buffer_deactivate_all() local
752 list_for_each_entry_safe(buffer, _buffer, in iio_buffer_deactivate_all()
754 iio_buffer_deactivate(buffer); in iio_buffer_deactivate_all()
757 static int iio_buffer_enable(struct iio_buffer *buffer, in iio_buffer_enable() argument
760 if (!buffer->access->enable) in iio_buffer_enable()
762 return buffer->access->enable(buffer, indio_dev); in iio_buffer_enable()
765 static int iio_buffer_disable(struct iio_buffer *buffer, in iio_buffer_disable() argument
768 if (!buffer->access->disable) in iio_buffer_disable()
770 return buffer->access->disable(buffer, indio_dev); in iio_buffer_disable()
774 struct iio_buffer *buffer) in iio_buffer_update_bytes_per_datum() argument
778 if (!buffer->access->set_bytes_per_datum) in iio_buffer_update_bytes_per_datum()
781 bytes = iio_compute_scan_bytes(indio_dev, buffer->scan_mask, in iio_buffer_update_bytes_per_datum()
782 buffer->scan_timestamp); in iio_buffer_update_bytes_per_datum()
784 buffer->access->set_bytes_per_datum(buffer, bytes); in iio_buffer_update_bytes_per_datum()
788 struct iio_buffer *buffer) in iio_buffer_request_update() argument
792 iio_buffer_update_bytes_per_datum(indio_dev, buffer); in iio_buffer_request_update()
793 if (buffer->access->request_update) { in iio_buffer_request_update()
794 ret = buffer->access->request_update(buffer); in iio_buffer_request_update()
830 struct iio_buffer *buffer; in iio_verify_update() local
854 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { in iio_verify_update()
855 if (buffer == remove_buffer) in iio_verify_update()
857 modes &= buffer->access->modes; in iio_verify_update()
858 config->watermark = min(config->watermark, buffer->watermark); in iio_verify_update()
895 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { in iio_verify_update()
896 if (buffer == remove_buffer) in iio_verify_update()
898 bitmap_or(compound_mask, compound_mask, buffer->scan_mask, in iio_verify_update()
900 scan_timestamp |= buffer->scan_timestamp; in iio_verify_update()
943 static void iio_buffer_demux_free(struct iio_buffer *buffer) in iio_buffer_demux_free() argument
946 list_for_each_entry_safe(p, q, &buffer->demux_list, l) { in iio_buffer_demux_free()
952 static int iio_buffer_add_demux(struct iio_buffer *buffer, in iio_buffer_add_demux() argument
967 list_add_tail(&(*p)->l, &buffer->demux_list); in iio_buffer_add_demux()
974 struct iio_buffer *buffer) in iio_buffer_update_demux() argument
981 iio_buffer_demux_free(buffer); in iio_buffer_update_demux()
982 kfree(buffer->demux_bounce); in iio_buffer_update_demux()
983 buffer->demux_bounce = NULL; in iio_buffer_update_demux()
987 buffer->scan_mask, in iio_buffer_update_demux()
993 buffer->scan_mask, in iio_buffer_update_demux()
1009 ret = iio_buffer_add_demux(buffer, &p, in_loc, out_loc, length); in iio_buffer_update_demux()
1016 if (buffer->scan_timestamp) { in iio_buffer_update_demux()
1020 ret = iio_buffer_add_demux(buffer, &p, in_loc, out_loc, length); in iio_buffer_update_demux()
1025 buffer->demux_bounce = kzalloc(out_loc, GFP_KERNEL); in iio_buffer_update_demux()
1026 if (buffer->demux_bounce == NULL) { in iio_buffer_update_demux()
1033 iio_buffer_demux_free(buffer); in iio_buffer_update_demux()
1041 struct iio_buffer *buffer; in iio_update_demux() local
1044 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { in iio_update_demux()
1045 ret = iio_buffer_update_demux(indio_dev, buffer); in iio_update_demux()
1052 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) in iio_update_demux()
1053 iio_buffer_demux_free(buffer); in iio_update_demux()
1062 struct iio_buffer *buffer; in iio_enable_buffers() local
1098 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { in iio_enable_buffers()
1099 ret = iio_buffer_enable(buffer, indio_dev); in iio_enable_buffers()
1128 list_for_each_entry_continue_reverse(buffer, &iio_dev_opaque->buffer_list, in iio_enable_buffers()
1130 iio_buffer_disable(buffer, indio_dev); in iio_enable_buffers()
1144 struct iio_buffer *buffer; in iio_disable_buffers() local
1170 list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { in iio_disable_buffers()
1171 ret2 = iio_buffer_disable(buffer, indio_dev); in iio_disable_buffers()
1300 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_store_enable() local
1310 inlist = iio_buffer_is_active(buffer); in iio_buffer_store_enable()
1316 ret = __iio_update_buffers(indio_dev, buffer, NULL); in iio_buffer_store_enable()
1318 ret = __iio_update_buffers(indio_dev, NULL, buffer); in iio_buffer_store_enable()
1329 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_show_watermark() local
1331 return sysfs_emit(buf, "%u\n", buffer->watermark); in iio_buffer_show_watermark()
1340 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_buffer_store_watermark() local
1352 if (val > buffer->length) { in iio_buffer_store_watermark()
1357 if (iio_buffer_is_active(buffer)) { in iio_buffer_store_watermark()
1362 buffer->watermark = val; in iio_buffer_store_watermark()
1373 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in iio_dma_show_data_available() local
1375 return sysfs_emit(buf, "%zu\n", iio_buffer_data_available(buffer)); in iio_dma_show_data_available()
1382 struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer; in direction_show() local
1384 switch (buffer->direction) { in direction_show()
1424 static struct attribute *iio_buffer_wrap_attr(struct iio_buffer *buffer, in iio_buffer_wrap_attr() argument
1434 iio_attr->buffer = buffer; in iio_buffer_wrap_attr()
1444 list_add(&iio_attr->l, &buffer->buffer_attr_list); in iio_buffer_wrap_attr()
1512 struct iio_buffer *buffer = ib->buffer; in iio_buffer_chrdev_release() local
1514 wake_up(&buffer->pollq); in iio_buffer_chrdev_release()
1517 clear_bit(IIO_BUSY_BIT_POS, &buffer->flags); in iio_buffer_chrdev_release()
1537 struct iio_buffer *buffer; in iio_device_buffer_getfd() local
1548 buffer = iio_dev_opaque->attached_buffers[idx]; in iio_device_buffer_getfd()
1550 if (test_and_set_bit(IIO_BUSY_BIT_POS, &buffer->flags)) { in iio_device_buffer_getfd()
1562 ib->buffer = buffer; in iio_device_buffer_getfd()
1582 clear_bit(IIO_BUSY_BIT_POS, &buffer->flags); in iio_device_buffer_getfd()
1599 static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, in __iio_buffer_alloc_sysfs_and_mask() argument
1610 if (buffer->attrs) { in __iio_buffer_alloc_sysfs_and_mask()
1611 while (buffer->attrs[buffer_attrcount] != NULL) in __iio_buffer_alloc_sysfs_and_mask()
1616 INIT_LIST_HEAD(&buffer->buffer_attr_list); in __iio_buffer_alloc_sysfs_and_mask()
1624 ret = iio_buffer_add_channel_sysfs(indio_dev, buffer, in __iio_buffer_alloc_sysfs_and_mask()
1633 if (indio_dev->masklength && buffer->scan_mask == NULL) { in __iio_buffer_alloc_sysfs_and_mask()
1634 buffer->scan_mask = bitmap_zalloc(indio_dev->masklength, in __iio_buffer_alloc_sysfs_and_mask()
1636 if (buffer->scan_mask == NULL) { in __iio_buffer_alloc_sysfs_and_mask()
1651 if (!buffer->access->set_length) in __iio_buffer_alloc_sysfs_and_mask()
1654 if (buffer->access->flags & INDIO_BUFFER_FLAG_FIXED_WATERMARK) in __iio_buffer_alloc_sysfs_and_mask()
1657 if (buffer->attrs) in __iio_buffer_alloc_sysfs_and_mask()
1658 memcpy(&attr[ARRAY_SIZE(iio_buffer_attrs)], buffer->attrs, in __iio_buffer_alloc_sysfs_and_mask()
1662 buffer->buffer_group.attrs = attr; in __iio_buffer_alloc_sysfs_and_mask()
1667 wrapped = iio_buffer_wrap_attr(buffer, attr[i]); in __iio_buffer_alloc_sysfs_and_mask()
1676 list_for_each_entry(p, &buffer->buffer_attr_list, l) in __iio_buffer_alloc_sysfs_and_mask()
1679 buffer->buffer_group.name = kasprintf(GFP_KERNEL, "buffer%d", index); in __iio_buffer_alloc_sysfs_and_mask()
1680 if (!buffer->buffer_group.name) { in __iio_buffer_alloc_sysfs_and_mask()
1685 ret = iio_device_register_sysfs_group(indio_dev, &buffer->buffer_group); in __iio_buffer_alloc_sysfs_and_mask()
1702 kfree(buffer->buffer_group.name); in __iio_buffer_alloc_sysfs_and_mask()
1704 kfree(buffer->buffer_group.attrs); in __iio_buffer_alloc_sysfs_and_mask()
1706 bitmap_free(buffer->scan_mask); in __iio_buffer_alloc_sysfs_and_mask()
1708 iio_free_chan_devattr_list(&buffer->buffer_attr_list); in __iio_buffer_alloc_sysfs_and_mask()
1713 static void __iio_buffer_free_sysfs_and_mask(struct iio_buffer *buffer, in __iio_buffer_free_sysfs_and_mask() argument
1719 bitmap_free(buffer->scan_mask); in __iio_buffer_free_sysfs_and_mask()
1720 kfree(buffer->buffer_group.name); in __iio_buffer_free_sysfs_and_mask()
1721 kfree(buffer->buffer_group.attrs); in __iio_buffer_free_sysfs_and_mask()
1722 iio_free_chan_devattr_list(&buffer->buffer_attr_list); in __iio_buffer_free_sysfs_and_mask()
1729 struct iio_buffer *buffer; in iio_buffers_alloc_sysfs_and_mask() local
1747 buffer = iio_dev_opaque->attached_buffers[i]; in iio_buffers_alloc_sysfs_and_mask()
1748 ret = __iio_buffer_alloc_sysfs_and_mask(buffer, indio_dev, i); in iio_buffers_alloc_sysfs_and_mask()
1771 buffer = iio_dev_opaque->attached_buffers[unwind_idx]; in iio_buffers_alloc_sysfs_and_mask()
1772 __iio_buffer_free_sysfs_and_mask(buffer, indio_dev, unwind_idx); in iio_buffers_alloc_sysfs_and_mask()
1780 struct iio_buffer *buffer; in iio_buffers_free_sysfs_and_mask() local
1790 buffer = iio_dev_opaque->attached_buffers[i]; in iio_buffers_free_sysfs_and_mask()
1791 __iio_buffer_free_sysfs_and_mask(buffer, indio_dev, i); in iio_buffers_free_sysfs_and_mask()
1811 static const void *iio_demux(struct iio_buffer *buffer, in iio_demux() argument
1816 if (list_empty(&buffer->demux_list)) in iio_demux()
1818 list_for_each_entry(t, &buffer->demux_list, l) in iio_demux()
1819 memcpy(buffer->demux_bounce + t->to, in iio_demux()
1822 return buffer->demux_bounce; in iio_demux()
1825 static int iio_push_to_buffer(struct iio_buffer *buffer, const void *data) in iio_push_to_buffer() argument
1827 const void *dataout = iio_demux(buffer, data); in iio_push_to_buffer()
1830 ret = buffer->access->store_to(buffer, dataout); in iio_push_to_buffer()
1838 wake_up_interruptible_poll(&buffer->pollq, EPOLLIN | EPOLLRDNORM); in iio_push_to_buffer()
1920 struct iio_buffer *buffer = container_of(ref, struct iio_buffer, ref); in iio_buffer_release() local
1922 buffer->access->release(buffer); in iio_buffer_release()
1931 struct iio_buffer *iio_buffer_get(struct iio_buffer *buffer) in iio_buffer_get() argument
1933 if (buffer) in iio_buffer_get()
1934 kref_get(&buffer->ref); in iio_buffer_get()
1936 return buffer; in iio_buffer_get()
1944 void iio_buffer_put(struct iio_buffer *buffer) in iio_buffer_put() argument
1946 if (buffer) in iio_buffer_put()
1947 kref_put(&buffer->ref, iio_buffer_release); in iio_buffer_put()
1965 struct iio_buffer *buffer) in iio_device_attach_buffer() argument
1978 buffer = iio_buffer_get(buffer); in iio_device_attach_buffer()
1981 if (!indio_dev->buffer) in iio_device_attach_buffer()
1982 indio_dev->buffer = buffer; in iio_device_attach_buffer()
1984 iio_dev_opaque->attached_buffers[cnt - 1] = buffer; in iio_device_attach_buffer()