Lines Matching +full:ad7606 +full:- +full:8
1 // SPDX-License-Identifier: GPL-2.0
3 * AD7606 SPI ADC driver
29 #include "ad7606.h"
45 1, 2, 4, 8, 16, 32, 64,
48 static const unsigned int ad7616_oversampling_avail[8] = {
49 1, 2, 4, 8, 16, 32, 64, 128,
54 if (st->gpio_reset) { in ad7606_reset()
55 gpiod_set_value(st->gpio_reset, 1); in ad7606_reset()
57 gpiod_set_value(st->gpio_reset, 0); in ad7606_reset()
61 return -ENODEV; in ad7606_reset()
72 mutex_lock(&st->lock); in ad7606_reg_access()
74 ret = st->bops->reg_read(st, reg); in ad7606_reg_access()
80 ret = st->bops->reg_write(st, reg, writeval); in ad7606_reg_access()
83 mutex_unlock(&st->lock); in ad7606_reg_access()
89 unsigned int num = st->chip_info->num_channels - 1; in ad7606_read_samples()
90 u16 *data = st->data; in ad7606_read_samples()
103 if (st->gpio_frstdata) { in ad7606_read_samples()
104 ret = st->bops->read_block(st->dev, 1, data); in ad7606_read_samples()
108 if (!gpiod_get_value(st->gpio_frstdata)) { in ad7606_read_samples()
110 return -EIO; in ad7606_read_samples()
114 num--; in ad7606_read_samples()
117 return st->bops->read_block(st->dev, num, data); in ad7606_read_samples()
123 struct iio_dev *indio_dev = pf->indio_dev; in ad7606_trigger_handler()
127 mutex_lock(&st->lock); in ad7606_trigger_handler()
131 iio_push_to_buffers_with_timestamp(indio_dev, st->data, in ad7606_trigger_handler()
134 iio_trigger_notify_done(indio_dev->trig); in ad7606_trigger_handler()
136 gpiod_set_value(st->gpio_convst, 1); in ad7606_trigger_handler()
138 mutex_unlock(&st->lock); in ad7606_trigger_handler()
148 gpiod_set_value(st->gpio_convst, 1); in ad7606_scan_direct()
149 ret = wait_for_completion_timeout(&st->completion, in ad7606_scan_direct()
152 ret = -ETIMEDOUT; in ad7606_scan_direct()
158 ret = st->data[ch]; in ad7606_scan_direct()
161 gpiod_set_value(st->gpio_convst, 0); in ad7606_scan_direct()
181 ret = ad7606_scan_direct(indio_dev, chan->address); in ad7606_read_raw()
189 if (st->sw_mode_en) in ad7606_read_raw()
190 ch = chan->address; in ad7606_read_raw()
192 *val2 = st->scale_avail[st->range[ch]]; in ad7606_read_raw()
195 *val = st->oversampling; in ad7606_read_raw()
198 return -EINVAL; in ad7606_read_raw()
208 len += scnprintf(buf + len, PAGE_SIZE - len, in ad7606_show_avail()
211 buf[len - 1] = '\n'; in ad7606_show_avail()
223 return ad7606_show_avail(buf, st->scale_avail, st->num_scales, true); in in_voltage_scale_available_show()
232 gpiod_set_value(st->gpio_range, val); in ad7606_write_scale_hw()
244 gpiod_set_array_value(ARRAY_SIZE(values), st->gpio_os->desc, in ad7606_write_os_hw()
245 st->gpio_os->info, values); in ad7606_write_os_hw()
248 if (st->chip_info->os_req_reset) in ad7606_write_os_hw()
265 mutex_lock(&st->lock); in ad7606_write_raw()
266 i = find_closest(val2, st->scale_avail, st->num_scales); in ad7606_write_raw()
267 if (st->sw_mode_en) in ad7606_write_raw()
268 ch = chan->address; in ad7606_write_raw()
269 ret = st->write_scale(indio_dev, ch, i); in ad7606_write_raw()
271 mutex_unlock(&st->lock); in ad7606_write_raw()
274 st->range[ch] = i; in ad7606_write_raw()
275 mutex_unlock(&st->lock); in ad7606_write_raw()
280 return -EINVAL; in ad7606_write_raw()
281 i = find_closest(val, st->oversampling_avail, in ad7606_write_raw()
282 st->num_os_ratios); in ad7606_write_raw()
283 mutex_lock(&st->lock); in ad7606_write_raw()
284 ret = st->write_os(indio_dev, i); in ad7606_write_raw()
286 mutex_unlock(&st->lock); in ad7606_write_raw()
289 st->oversampling = st->oversampling_avail[i]; in ad7606_write_raw()
290 mutex_unlock(&st->lock); in ad7606_write_raw()
294 return -EINVAL; in ad7606_write_raw()
305 return ad7606_show_avail(buf, st->oversampling_avail, in ad7606_oversampling_ratio_avail()
306 st->num_os_ratios, false); in ad7606_oversampling_ratio_avail()
349 IIO_CHAN_SOFT_TIMESTAMP(8),
364 * -SER/PAR
365 * -SEQEN
367 * -WR/BURST
368 * -DB4/SER1W
380 AD7606_CHANNEL(8),
432 struct device *dev = st->dev; in ad7606_request_gpios()
434 st->gpio_convst = devm_gpiod_get(dev, "adi,conversion-start", in ad7606_request_gpios()
436 if (IS_ERR(st->gpio_convst)) in ad7606_request_gpios()
437 return PTR_ERR(st->gpio_convst); in ad7606_request_gpios()
439 st->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); in ad7606_request_gpios()
440 if (IS_ERR(st->gpio_reset)) in ad7606_request_gpios()
441 return PTR_ERR(st->gpio_reset); in ad7606_request_gpios()
443 st->gpio_range = devm_gpiod_get_optional(dev, "adi,range", in ad7606_request_gpios()
445 if (IS_ERR(st->gpio_range)) in ad7606_request_gpios()
446 return PTR_ERR(st->gpio_range); in ad7606_request_gpios()
448 st->gpio_standby = devm_gpiod_get_optional(dev, "standby", in ad7606_request_gpios()
450 if (IS_ERR(st->gpio_standby)) in ad7606_request_gpios()
451 return PTR_ERR(st->gpio_standby); in ad7606_request_gpios()
453 st->gpio_frstdata = devm_gpiod_get_optional(dev, "adi,first-data", in ad7606_request_gpios()
455 if (IS_ERR(st->gpio_frstdata)) in ad7606_request_gpios()
456 return PTR_ERR(st->gpio_frstdata); in ad7606_request_gpios()
458 if (!st->chip_info->oversampling_num) in ad7606_request_gpios()
461 st->gpio_os = devm_gpiod_get_array_optional(dev, in ad7606_request_gpios()
462 "adi,oversampling-ratio", in ad7606_request_gpios()
464 return PTR_ERR_OR_ZERO(st->gpio_os); in ad7606_request_gpios()
479 gpiod_set_value(st->gpio_convst, 0); in ad7606_interrupt()
480 iio_trigger_poll_nested(st->trig); in ad7606_interrupt()
482 complete(&st->completion); in ad7606_interrupt()
493 if (st->trig != trig) in ad7606_validate_trigger()
494 return -EINVAL; in ad7606_validate_trigger()
503 gpiod_set_value(st->gpio_convst, 1); in ad7606_buffer_postenable()
512 gpiod_set_value(st->gpio_convst, 0); in ad7606_buffer_predisable()
570 return -ENOMEM; in ad7606_probe()
575 st->dev = dev; in ad7606_probe()
576 mutex_init(&st->lock); in ad7606_probe()
577 st->bops = bops; in ad7606_probe()
578 st->base_address = base_address; in ad7606_probe()
579 /* tied to logic low, analog input range is +/- 5V */ in ad7606_probe()
580 st->range[0] = 0; in ad7606_probe()
581 st->oversampling = 1; in ad7606_probe()
582 st->scale_avail = ad7606_scale_avail; in ad7606_probe()
583 st->num_scales = ARRAY_SIZE(ad7606_scale_avail); in ad7606_probe()
590 st->chip_info = &ad7606_chip_info_tbl[id]; in ad7606_probe()
592 if (st->chip_info->oversampling_num) { in ad7606_probe()
593 st->oversampling_avail = st->chip_info->oversampling_avail; in ad7606_probe()
594 st->num_os_ratios = st->chip_info->oversampling_num; in ad7606_probe()
601 if (st->gpio_os) { in ad7606_probe()
602 if (st->gpio_range) in ad7606_probe()
603 indio_dev->info = &ad7606_info_os_and_range; in ad7606_probe()
605 indio_dev->info = &ad7606_info_os; in ad7606_probe()
607 if (st->gpio_range) in ad7606_probe()
608 indio_dev->info = &ad7606_info_range; in ad7606_probe()
610 indio_dev->info = &ad7606_info_no_os_or_range; in ad7606_probe()
612 indio_dev->modes = INDIO_DIRECT_MODE; in ad7606_probe()
613 indio_dev->name = name; in ad7606_probe()
614 indio_dev->channels = st->chip_info->channels; in ad7606_probe()
615 indio_dev->num_channels = st->chip_info->num_channels; in ad7606_probe()
617 init_completion(&st->completion); in ad7606_probe()
621 dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n"); in ad7606_probe()
624 if (st->chip_info->init_delay_ms) { in ad7606_probe()
625 if (msleep_interruptible(st->chip_info->init_delay_ms)) in ad7606_probe()
626 return -ERESTARTSYS; in ad7606_probe()
629 st->write_scale = ad7606_write_scale_hw; in ad7606_probe()
630 st->write_os = ad7606_write_os_hw; in ad7606_probe()
632 if (st->bops->sw_mode_config) in ad7606_probe()
633 st->sw_mode_en = device_property_present(st->dev, in ad7606_probe()
634 "adi,sw-mode"); in ad7606_probe()
636 if (st->sw_mode_en) { in ad7606_probe()
638 st->scale_avail = ad7616_sw_scale_avail; in ad7606_probe()
639 st->num_scales = ARRAY_SIZE(ad7616_sw_scale_avail); in ad7606_probe()
642 memset32(st->range, 2, ARRAY_SIZE(st->range)); in ad7606_probe()
643 indio_dev->info = &ad7606_info_os_range_and_debug; in ad7606_probe()
645 ret = st->bops->sw_mode_config(indio_dev); in ad7606_probe()
650 st->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", in ad7606_probe()
651 indio_dev->name, in ad7606_probe()
653 if (!st->trig) in ad7606_probe()
654 return -ENOMEM; in ad7606_probe()
656 st->trig->ops = &ad7606_trigger_ops; in ad7606_probe()
657 iio_trigger_set_drvdata(st->trig, indio_dev); in ad7606_probe()
658 ret = devm_iio_trigger_register(dev, st->trig); in ad7606_probe()
662 indio_dev->trig = iio_trigger_get(st->trig); in ad7606_probe()
690 if (st->gpio_standby) { in ad7606_suspend()
691 gpiod_set_value(st->gpio_range, 1); in ad7606_suspend()
692 gpiod_set_value(st->gpio_standby, 0); in ad7606_suspend()
703 if (st->gpio_standby) { in ad7606_resume()
704 gpiod_set_value(st->gpio_range, st->range[0]); in ad7606_resume()
705 gpiod_set_value(st->gpio_standby, 1); in ad7606_resume()
718 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");