Lines Matching +full:vref +full:- +full:p
1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (C) 2008-2010 Jonathan Cameron
7 * Copyright (C) 2002-2004 Stefan Eletzhofer
52 /* think about including max11600 etc - more settings */
59 /* max1363 only - though don't care on others.
80 /* max123{6-9} only */
83 /* max1363 only - merely part of channel selects or don't care for others */
88 /* max1363 strictly 0x06 - but doesn't matter */
95 * struct max1363_mode - scan mode information
123 * struct max1363_chip_info - chip specifc information
145 * struct max1363_state - driver instance specific data
160 * @vref: Reference voltage regulator
184 struct regulator *vref; member
306 for (i = 0; i < ci->num_modes; i++) in max1363_match_mode()
308 max1363_mode_table[ci->mode_list[i]]. in max1363_match_mode()
311 return &max1363_mode_table[ci->mode_list[i]]; in max1363_match_mode()
343 u8 tx_buf[2] = { st->setupbyte, st->configbyte }; in max1363_write_basic_config()
345 return st->send(st->client, tx_buf, 2); in max1363_write_basic_config()
350 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_set_scan_mode()
353 st->configbyte |= st->current_mode->conf; in max1363_set_scan_mode()
367 struct i2c_client *client = st->client; in max1363_read_single_chan()
372 mutex_lock(&st->lock); in max1363_read_single_chan()
381 if (st->monitor_on) { in max1363_read_single_chan()
382 ret = -EBUSY; in max1363_read_single_chan()
387 if (st->current_mode != &max1363_mode_table[chan->address]) { in max1363_read_single_chan()
389 st->current_mode = &max1363_mode_table[chan->address]; in max1363_read_single_chan()
394 if (st->chip_info->bits != 8) { in max1363_read_single_chan()
396 data = st->recv(client, rxbuf, 2); in max1363_read_single_chan()
402 ((1 << st->chip_info->bits) - 1); in max1363_read_single_chan()
405 data = st->recv(client, rxbuf, 1); in max1363_read_single_chan()
415 mutex_unlock(&st->lock); in max1363_read_single_chan()
437 *val = st->vref_uv / 1000; in max1363_read_raw()
438 *val2 = st->chip_info->bits; in max1363_read_raw()
441 return -EINVAL; in max1363_read_raw()
499 .datasheet_name = "AIN"#num"-AIN"#num2, \
691 return sprintf(buf, "%d\n", max1363_monitor_speeds[st->monitor_speed]); in max1363_monitor_show_freq()
707 return -EINVAL; in max1363_monitor_store_freq()
714 return -EINVAL; in max1363_monitor_store_freq()
716 mutex_lock(&st->lock); in max1363_monitor_store_freq()
717 st->monitor_speed = i; in max1363_monitor_store_freq()
718 mutex_unlock(&st->lock); in max1363_monitor_store_freq()
737 *val = st->thresh_low[chan->channel]; in max1363_read_thresh()
739 *val = st->thresh_high[chan->channel]; in max1363_read_thresh()
750 switch (st->chip_info->bits) { in max1363_write_thresh()
753 return -EINVAL; in max1363_write_thresh()
757 return -EINVAL; in max1363_write_thresh()
763 st->thresh_low[chan->channel] = val; in max1363_write_thresh()
766 st->thresh_high[chan->channel] = val; in max1363_write_thresh()
769 return -EINVAL; in max1363_write_thresh()
801 u8 tx[2] = { st->setupbyte, in max1363_event_handler()
802 MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0 }; in max1363_event_handler()
804 st->recv(st->client, &rx, 1); in max1363_event_handler()
808 st->send(st->client, tx, 2); in max1363_event_handler()
819 int number = chan->channel; in max1363_read_event_config()
821 mutex_lock(&st->lock); in max1363_read_event_config()
823 val = (1 << number) & st->mask_low; in max1363_read_event_config()
825 val = (1 << number) & st->mask_high; in max1363_read_event_config()
826 mutex_unlock(&st->lock); in max1363_read_event_config()
841 st->setupbyte &= ~MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
842 st->configbyte &= ~MAX1363_SCAN_MASK; in max1363_monitor_mode_update()
843 st->monitor_on = false; in max1363_monitor_mode_update()
848 st->setupbyte |= MAX1363_SETUP_MONITOR_SETUP; in max1363_monitor_mode_update()
849 st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK in max1363_monitor_mode_update()
852 st->configbyte |= MAX1363_CONFIG_SCAN_MONITOR_MODE; in max1363_monitor_mode_update()
853 if ((st->mask_low | st->mask_high) & 0x0F) { in max1363_monitor_mode_update()
854 st->configbyte |= max1363_mode_table[s0to3].conf; in max1363_monitor_mode_update()
856 } else if ((st->mask_low | st->mask_high) & 0x30) { in max1363_monitor_mode_update()
857 st->configbyte |= max1363_mode_table[d0m1to2m3].conf; in max1363_monitor_mode_update()
860 st->configbyte |= max1363_mode_table[d1m0to3m2].conf; in max1363_monitor_mode_update()
867 ret = -ENOMEM; in max1363_monitor_mode_update()
870 tx_buf[0] = st->configbyte; in max1363_monitor_mode_update()
871 tx_buf[1] = st->setupbyte; in max1363_monitor_mode_update()
872 tx_buf[2] = (st->monitor_speed << 1); in max1363_monitor_mode_update()
881 if (st->mask_low & (1 << j)) { in max1363_monitor_mode_update()
882 tx_buf[i] = (st->thresh_low[j] >> 4) & 0xFF; in max1363_monitor_mode_update()
883 tx_buf[i + 1] = (st->thresh_low[j] << 4) & 0xF0; in max1363_monitor_mode_update()
891 if (st->mask_high & (1 << j)) { in max1363_monitor_mode_update()
893 (st->thresh_high[j] >> 8) & 0x0F; in max1363_monitor_mode_update()
894 tx_buf[i + 2] = st->thresh_high[j] & 0xFF; in max1363_monitor_mode_update()
906 ret = st->send(st->client, tx_buf, len); in max1363_monitor_mode_update()
910 ret = -EIO; in max1363_monitor_mode_update()
921 tx_buf[0] = st->setupbyte; in max1363_monitor_mode_update()
922 tx_buf[1] = MAX1363_MON_INT_ENABLE | (st->monitor_speed << 1) | 0xF0; in max1363_monitor_mode_update()
923 ret = st->send(st->client, tx_buf, 2); in max1363_monitor_mode_update()
927 ret = -EIO; in max1363_monitor_mode_update()
931 st->monitor_on = true; in max1363_monitor_mode_update()
941 * Scan 0...3, 0-1,2-3 and 1-0,3-2
950 ret = -EBUSY; in __max1363_check_event_mask()
955 ret = -EBUSY; in __max1363_check_event_mask()
959 ret = -EBUSY; in __max1363_check_event_mask()
971 int number = chan->channel; in max1363_write_event_config()
976 mutex_lock(&st->lock); in max1363_write_event_config()
978 unifiedmask = st->mask_low | st->mask_high; in max1363_write_event_config()
982 st->mask_low &= ~(1 << number); in max1363_write_event_config()
988 st->mask_low |= (1 << number); in max1363_write_event_config()
992 st->mask_high &= ~(1 << number); in max1363_write_event_config()
998 st->mask_high |= (1 << number); in max1363_write_event_config()
1002 max1363_monitor_mode_update(st, !!(st->mask_high | st->mask_low)); in max1363_write_event_config()
1004 mutex_unlock(&st->lock); in max1363_write_event_config()
1033 st->current_mode = max1363_match_mode(scan_mask, st->chip_info); in max1363_update_scan_mode()
1034 if (!st->current_mode) in max1363_update_scan_mode()
1035 return -EINVAL; in max1363_update_scan_mode()
1055 /* max1363 and max1368 tested - rest from data sheet */
1441 st->setupbyte = MAX1363_SETUP_INT_CLOCK in max1363_initial_setup()
1445 if (st->vref) in max1363_initial_setup()
1446 st->setupbyte |= MAX1363_SETUP_AIN3_IS_REF_EXT_TO_REF; in max1363_initial_setup()
1448 st->setupbyte |= MAX1363_SETUP_POWER_UP_INT_REF in max1363_initial_setup()
1452 st->setupbyte = MAX1363_SETUP_BYTE(st->setupbyte); in max1363_initial_setup()
1453 st->current_mode = &max1363_mode_table[st->chip_info->default_mode]; in max1363_initial_setup()
1454 st->configbyte = MAX1363_CONFIG_BYTE(st->configbyte); in max1363_initial_setup()
1465 masks = devm_kzalloc(&indio_dev->dev, in max1363_alloc_scan_masks()
1468 st->chip_info->num_modes + 1), in max1363_alloc_scan_masks()
1471 return -ENOMEM; in max1363_alloc_scan_masks()
1473 for (i = 0; i < st->chip_info->num_modes; i++) in max1363_alloc_scan_masks()
1475 max1363_mode_table[st->chip_info->mode_list[i]] in max1363_alloc_scan_masks()
1478 indio_dev->available_scan_masks = masks; in max1363_alloc_scan_masks()
1483 static irqreturn_t max1363_trigger_handler(int irq, void *p) in max1363_trigger_handler() argument
1485 struct iio_poll_func *pf = p; in max1363_trigger_handler()
1486 struct iio_dev *indio_dev = pf->indio_dev; in max1363_trigger_handler()
1491 unsigned long numvals = bitmap_weight(st->current_mode->modemask, in max1363_trigger_handler()
1495 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1499 if (indio_dev->scan_timestamp) { in max1363_trigger_handler()
1502 d_size += sizeof(s64) - (d_size % sizeof(s64)); in max1363_trigger_handler()
1514 if (st->chip_info->bits != 8) in max1363_trigger_handler()
1515 b_sent = st->recv(st->client, rxbuf, numvals * 2); in max1363_trigger_handler()
1517 b_sent = st->recv(st->client, rxbuf, numvals); in max1363_trigger_handler()
1527 iio_trigger_notify_done(indio_dev->trig); in max1363_trigger_handler()
1586 struct regulator *vref; in max1363_probe() local
1588 indio_dev = devm_iio_device_alloc(&client->dev, in max1363_probe()
1591 return -ENOMEM; in max1363_probe()
1593 ret = iio_map_array_register(indio_dev, client->dev.platform_data); in max1363_probe()
1599 mutex_init(&st->lock); in max1363_probe()
1600 st->reg = devm_regulator_get(&client->dev, "vcc"); in max1363_probe()
1601 if (IS_ERR(st->reg)) { in max1363_probe()
1602 ret = PTR_ERR(st->reg); in max1363_probe()
1606 ret = regulator_enable(st->reg); in max1363_probe()
1613 st->chip_info = device_get_match_data(&client->dev); in max1363_probe()
1614 if (!st->chip_info) in max1363_probe()
1615 st->chip_info = &max1363_chip_info_tbl[id->driver_data]; in max1363_probe()
1616 st->client = client; in max1363_probe()
1618 st->vref_uv = st->chip_info->int_vref_mv * 1000; in max1363_probe()
1619 vref = devm_regulator_get_optional(&client->dev, "vref"); in max1363_probe()
1620 if (!IS_ERR(vref)) { in max1363_probe()
1623 ret = regulator_enable(vref); in max1363_probe()
1626 st->vref = vref; in max1363_probe()
1627 vref_uv = regulator_get_voltage(vref); in max1363_probe()
1629 ret = -EINVAL; in max1363_probe()
1632 st->vref_uv = vref_uv; in max1363_probe()
1635 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { in max1363_probe()
1636 st->send = i2c_master_send; in max1363_probe()
1637 st->recv = i2c_master_recv; in max1363_probe()
1638 } else if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE) in max1363_probe()
1639 && st->chip_info->bits == 8) { in max1363_probe()
1640 st->send = max1363_smbus_send; in max1363_probe()
1641 st->recv = max1363_smbus_recv; in max1363_probe()
1643 ret = -EOPNOTSUPP; in max1363_probe()
1651 indio_dev->name = id->name; in max1363_probe()
1652 indio_dev->channels = st->chip_info->channels; in max1363_probe()
1653 indio_dev->num_channels = st->chip_info->num_channels; in max1363_probe()
1654 indio_dev->info = st->chip_info->info; in max1363_probe()
1655 indio_dev->modes = INDIO_DIRECT_MODE; in max1363_probe()
1665 if (client->irq) { in max1363_probe()
1666 ret = devm_request_threaded_irq(&client->dev, st->client->irq, in max1363_probe()
1686 if (st->vref) in max1363_probe()
1687 regulator_disable(st->vref); in max1363_probe()
1688 regulator_disable(st->reg); in max1363_probe()
1701 if (st->vref) in max1363_remove()
1702 regulator_disable(st->vref); in max1363_remove()
1703 regulator_disable(st->reg); in max1363_remove()