Lines Matching +full:vref +full:- +full:buffered
1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (C) 2008-2010 Jonathan Cameron
7 * Copyright (C) 2002-2004 Stefan Eletzhofer
51 /* think about including max11600 etc - more settings */
58 /* max1363 only - though don't care on others.
79 /* max123{6-9} only */
82 /* max1363 only - merely part of channel selects or don't care for others */
87 /* max1363 strictly 0x06 - but doesn't matter */
94 * struct max1363_mode - scan mode information
122 * struct max1363_chip_info - chip specifc information
144 * struct max1363_state - driver instance specific data
158 * @vref: Reference voltage regulator
181 struct regulator *vref; member
303 for (i = 0; i < ci->num_modes; i++) in max1363_match_mode()
305 max1363_mode_table[ci->mode_list[i]]. in max1363_match_mode()
308 return &max1363_mode_table[ci->mode_list[i]]; in max1363_match_mode()
340 u8 tx_buf[2] = { st->setupbyte, st->configbyte }; in max1363_write_basic_config()
342 return st->send(st->client, tx_buf, 2); in max1363_write_basic_config()
347 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_set_scan_mode()
350 st->configbyte |= st->current_mode->conf; in max1363_set_scan_mode()
364 struct i2c_client *client = st->client; in max1363_read_single_chan()
369 mutex_lock(&st->lock); in max1363_read_single_chan()
376 * Also, cannot read directly if buffered capture enabled. in max1363_read_single_chan()
378 if (st->monitor_on) { in max1363_read_single_chan()
379 ret = -EBUSY; in max1363_read_single_chan()
384 if (st->current_mode != &max1363_mode_table[chan->address]) { in max1363_read_single_chan()
386 st->current_mode = &max1363_mode_table[chan->address]; in max1363_read_single_chan()
391 if (st->chip_info->bits != 8) { in max1363_read_single_chan()
393 data = st->recv(client, rxbuf, 2); in max1363_read_single_chan()
399 ((1 << st->chip_info->bits) - 1); in max1363_read_single_chan()
402 data = st->recv(client, rxbuf, 1); in max1363_read_single_chan()
412 mutex_unlock(&st->lock); in max1363_read_single_chan()
434 *val = st->vref_uv / 1000; in max1363_read_raw()
435 *val2 = st->chip_info->bits; in max1363_read_raw()
438 return -EINVAL; in max1363_read_raw()
496 .datasheet_name = "AIN"#num"-AIN"#num2, \
687 return sprintf(buf, "%d\n", max1363_monitor_speeds[st->monitor_speed]); in max1363_monitor_show_freq()
703 return -EINVAL; in max1363_monitor_store_freq()
710 return -EINVAL; in max1363_monitor_store_freq()
712 mutex_lock(&st->lock); in max1363_monitor_store_freq()
713 st->monitor_speed = i; in max1363_monitor_store_freq()
714 mutex_unlock(&st->lock); in max1363_monitor_store_freq()
733 *val = st->thresh_low[chan->channel]; in max1363_read_thresh()
735 *val = st->thresh_high[chan->channel]; in max1363_read_thresh()
746 switch (st->chip_info->bits) { in max1363_write_thresh()
749 return -EINVAL; in max1363_write_thresh()
753 return -EINVAL; in max1363_write_thresh()
759 st->thresh_low[chan->channel] = val; in max1363_write_thresh()
762 st->thresh_high[chan->channel] = val; in max1363_write_thresh()
765 return -EINVAL; in max1363_write_thresh()
797 u8 tx[2] = { st->setupbyte, in max1363_event_handler()
798 MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0 }; in max1363_event_handler()
800 st->recv(st->client, &rx, 1); in max1363_event_handler()
804 st->send(st->client, tx, 2); in max1363_event_handler()
815 int number = chan->channel; in max1363_read_event_config()
817 mutex_lock(&st->lock); in max1363_read_event_config()
819 val = (1 << number) & st->mask_low; in max1363_read_event_config()
821 val = (1 << number) & st->mask_high; in max1363_read_event_config()
822 mutex_unlock(&st->lock); in max1363_read_event_config()
836 /* transition to buffered capture is not currently supported */ in max1363_monitor_mode_update()
837 st->setupbyte &= ~MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
838 st->configbyte &= ~MAX1363_SCAN_MASK; in max1363_monitor_mode_update()
839 st->monitor_on = false; in max1363_monitor_mode_update()
844 st->setupbyte |= MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
845 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_monitor_mode_update()
848 st->configbyte |= MAX1363_CONFIG_SCAN_MONITOR_MODE; in max1363_monitor_mode_update()
849 if ((st->mask_low | st->mask_high) & 0x0F) { in max1363_monitor_mode_update()
850 st->configbyte |= max1363_mode_table[s0to3].conf; in max1363_monitor_mode_update()
852 } else if ((st->mask_low | st->mask_high) & 0x30) { in max1363_monitor_mode_update()
853 st->configbyte |= max1363_mode_table[d0m1to2m3].conf; in max1363_monitor_mode_update()
856 st->configbyte |= max1363_mode_table[d1m0to3m2].conf; in max1363_monitor_mode_update()
863 ret = -ENOMEM; in max1363_monitor_mode_update()
866 tx_buf[0] = st->configbyte; in max1363_monitor_mode_update()
867 tx_buf[1] = st->setupbyte; in max1363_monitor_mode_update()
868 tx_buf[2] = (st->monitor_speed << 1); in max1363_monitor_mode_update()
877 if (st->mask_low & (1 << j)) { in max1363_monitor_mode_update()
878 tx_buf[i] = (st->thresh_low[j] >> 4) & 0xFF; in max1363_monitor_mode_update()
879 tx_buf[i + 1] = (st->thresh_low[j] << 4) & 0xF0; in max1363_monitor_mode_update()
887 if (st->mask_high & (1 << j)) { in max1363_monitor_mode_update()
889 (st->thresh_high[j] >> 8) & 0x0F; in max1363_monitor_mode_update()
890 tx_buf[i + 2] = st->thresh_high[j] & 0xFF; in max1363_monitor_mode_update()
902 ret = st->send(st->client, tx_buf, len); in max1363_monitor_mode_update()
906 ret = -EIO; in max1363_monitor_mode_update()
917 tx_buf[0] = st->setupbyte; in max1363_monitor_mode_update()
918 tx_buf[1] = MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0; in max1363_monitor_mode_update()
919 ret = st->send(st->client, tx_buf, 2); in max1363_monitor_mode_update()
923 ret = -EIO; in max1363_monitor_mode_update()
927 st->monitor_on = true; in max1363_monitor_mode_update()
937 * Scan 0...3, 0-1,2-3 and 1-0,3-2
946 ret = -EBUSY; in __max1363_check_event_mask()
951 ret = -EBUSY; in __max1363_check_event_mask()
955 ret = -EBUSY; in __max1363_check_event_mask()
967 int number = chan->channel; in max1363_write_event_config()
972 mutex_lock(&st->lock); in max1363_write_event_config()
974 unifiedmask = st->mask_low | st->mask_high; in max1363_write_event_config()
978 st->mask_low &= ~(1 << number); in max1363_write_event_config()
984 st->mask_low |= (1 << number); in max1363_write_event_config()
988 st->mask_high &= ~(1 << number); in max1363_write_event_config()
994 st->mask_high |= (1 << number); in max1363_write_event_config()
998 max1363_monitor_mode_update(st, !!(st->mask_high | st->mask_low)); in max1363_write_event_config()
1000 mutex_unlock(&st->lock); in max1363_write_event_config()
1029 st->current_mode = max1363_match_mode(scan_mask, st->chip_info); in max1363_update_scan_mode()
1030 if (!st->current_mode) in max1363_update_scan_mode()
1031 return -EINVAL; in max1363_update_scan_mode()
1051 /* max1363 and max1368 tested - rest from data sheet */
1437 st->setupbyte = MAX1363_SETUP_INT_CLOCK in max1363_initial_setup()
1441 if (st->vref) in max1363_initial_setup()
1442 st->setupbyte |= MAX1363_SETUP_AIN3_IS_REF_EXT_TO_REF; in max1363_initial_setup()
1444 st->setupbyte |= MAX1363_SETUP_POWER_UP_INT_REF in max1363_initial_setup()
1448 st->setupbyte = MAX1363_SETUP_BYTE(st->setupbyte); in max1363_initial_setup()
1449 st->current_mode = &max1363_mode_table[st->chip_info->default_mode]; in max1363_initial_setup()
1450 st->configbyte = MAX1363_CONFIG_BYTE(st->configbyte); in max1363_initial_setup()
1461 masks = devm_kzalloc(&indio_dev->dev, in max1363_alloc_scan_masks()
1464 st->chip_info->num_modes + 1), in max1363_alloc_scan_masks()
1467 return -ENOMEM; in max1363_alloc_scan_masks()
1469 for (i = 0; i < st->chip_info->num_modes; i++) in max1363_alloc_scan_masks()
1471 max1363_mode_table[st->chip_info->mode_list[i]] in max1363_alloc_scan_masks()
1474 indio_dev->available_scan_masks = masks; in max1363_alloc_scan_masks()
1482 struct iio_dev *indio_dev = pf->indio_dev; in max1363_trigger_handler()
1487 unsigned long numvals = bitmap_weight(st->current_mode->modemask, in max1363_trigger_handler()
1491 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1495 if (indio_dev->scan_timestamp) { in max1363_trigger_handler()
1498 d_size += sizeof(s64) - (d_size % sizeof(s64)); in max1363_trigger_handler()
1510 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1511 b_sent = st->recv(st->client, rxbuf, numvals * 2); in max1363_trigger_handler()
1513 b_sent = st->recv(st->client, rxbuf, numvals); in max1363_trigger_handler()
1523 iio_trigger_notify_done(indio_dev->trig); in max1363_trigger_handler()
1587 struct regulator *vref; in max1363_probe() local
1589 indio_dev = devm_iio_device_alloc(&client->dev, in max1363_probe()
1592 return -ENOMEM; in max1363_probe()
1596 mutex_init(&st->lock); in max1363_probe()
1597 ret = devm_regulator_get_enable(&client->dev, "vcc"); in max1363_probe()
1601 st->chip_info = device_get_match_data(&client->dev); in max1363_probe()
1602 if (!st->chip_info) in max1363_probe()
1603 st->chip_info = &max1363_chip_info_tbl[id->driver_data]; in max1363_probe()
1604 st->client = client; in max1363_probe()
1606 st->vref_uv = st->chip_info->int_vref_mv * 1000; in max1363_probe()
1607 vref = devm_regulator_get_optional(&client->dev, "vref"); in max1363_probe()
1608 if (!IS_ERR(vref)) { in max1363_probe()
1611 ret = regulator_enable(vref); in max1363_probe()
1615 ret = devm_add_action_or_reset(&client->dev, max1363_reg_disable, vref); in max1363_probe()
1619 st->vref = vref; in max1363_probe()
1620 vref_uv = regulator_get_voltage(vref); in max1363_probe()
1622 return -EINVAL; in max1363_probe()
1624 st->vref_uv = vref_uv; in max1363_probe()
1627 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { in max1363_probe()
1628 st->send = i2c_master_send; in max1363_probe()
1629 st->recv = i2c_master_recv; in max1363_probe()
1630 } else if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE) in max1363_probe()
1631 && st->chip_info->bits == 8) { in max1363_probe()
1632 st->send = max1363_smbus_send; in max1363_probe()
1633 st->recv = max1363_smbus_recv; in max1363_probe()
1635 return -EOPNOTSUPP; in max1363_probe()
1642 indio_dev->name = id->name; in max1363_probe()
1643 indio_dev->channels = st->chip_info->channels; in max1363_probe()
1644 indio_dev->num_channels = st->chip_info->num_channels; in max1363_probe()
1645 indio_dev->info = st->chip_info->info; in max1363_probe()
1646 indio_dev->modes = INDIO_DIRECT_MODE; in max1363_probe()
1651 ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL, in max1363_probe()
1656 if (client->irq) { in max1363_probe()
1657 ret = devm_request_threaded_irq(&client->dev, st->client->irq, in max1363_probe()
1668 return devm_iio_device_register(&client->dev, indio_dev); in max1363_probe()