45 	1, 2, 4, 8, 16, 32, 64,
49 	1, 2, 4, 8, 16, 32, 64, 128,
52 int ad7606_reset(struct ad7606_state *st)  in ad7606_reset()  argument
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()
70 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_reg_access()  local
73 	guard(mutex)(&st->lock);  in ad7606_reg_access()
76 		ret = st->bops->reg_read(st, reg);  in ad7606_reg_access()
82 		return st->bops->reg_write(st, reg, writeval);  in ad7606_reg_access()
86 static int ad7606_read_samples(struct ad7606_state *st)  in ad7606_read_samples()  argument
88 	unsigned int num = st->chip_info->num_channels - 1;  in ad7606_read_samples()
89 	u16 *data = st->data;  in ad7606_read_samples()
91 	return st->bops->read_block(st->dev, num, data);  in ad7606_read_samples()
98 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_trigger_handler()  local
101 	guard(mutex)(&st->lock);  in ad7606_trigger_handler()
103 	ret = ad7606_read_samples(st);  in ad7606_trigger_handler()
107 	iio_push_to_buffers_with_timestamp(indio_dev, st->data,  in ad7606_trigger_handler()
112 	gpiod_set_value(st->gpio_convst, 1);  in ad7606_trigger_handler()
119 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_scan_direct()  local
122 	gpiod_set_value(st->gpio_convst, 1);  in ad7606_scan_direct()
123 	ret = wait_for_completion_timeout(&st->completion,  in ad7606_scan_direct()
130 	ret = ad7606_read_samples(st);  in ad7606_scan_direct()
132 		ret = st->data[ch];  in ad7606_scan_direct()
135 	gpiod_set_value(st->gpio_convst, 0);  in ad7606_scan_direct()
147 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_read_raw()  local
160 		if (st->sw_mode_en)  in ad7606_read_raw()
163 		*val2 = st->scale_avail[st->range[ch]];  in ad7606_read_raw()
166 		*val = st->oversampling;  in ad7606_read_raw()
182 	buf[len - 1] = '\n';  in ad7606_show_avail()
192 	struct ad7606_state *st = iio_priv(indio_dev);  in in_voltage_scale_available_show()  local
194 	return ad7606_show_avail(buf, st->scale_avail, st->num_scales, true);  in in_voltage_scale_available_show()
201 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_write_scale_hw()  local
203 	gpiod_set_value(st->gpio_range, val);  in ad7606_write_scale_hw()
210 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_write_os_hw()  local
215 	gpiod_set_array_value(st->gpio_os->ndescs, st->gpio_os->desc,  in ad7606_write_os_hw()
216 			      st->gpio_os->info, values);  in ad7606_write_os_hw()
219 	if (st->chip_info->os_req_reset)  in ad7606_write_os_hw()
220 		ad7606_reset(st);  in ad7606_write_os_hw()
231 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_write_raw()  local
234 	guard(mutex)(&st->lock);  in ad7606_write_raw()
238 		i = find_closest(val2, st->scale_avail, st->num_scales);  in ad7606_write_raw()
239 		if (st->sw_mode_en)  in ad7606_write_raw()
241 		ret = st->write_scale(indio_dev, ch, i);  in ad7606_write_raw()
244 		st->range[ch] = i;  in ad7606_write_raw()
250 		i = find_closest(val, st->oversampling_avail,  in ad7606_write_raw()
251 				 st->num_os_ratios);  in ad7606_write_raw()
252 		ret = st->write_os(indio_dev, i);  in ad7606_write_raw()
267 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_oversampling_ratio_avail()  local
269 	return ad7606_show_avail(buf, st->oversampling_avail,  in ad7606_oversampling_ratio_avail()
270 				 st->num_os_ratios, false);  in ad7606_oversampling_ratio_avail()
307 	AD7605_CHANNEL(1),
315 	AD7606_CHANNEL(1),
337 	AD7606_CHANNEL(1),
394 static int ad7606_request_gpios(struct ad7606_state *st)  in ad7606_request_gpios()  argument
396 	struct device *dev = st->dev;  in ad7606_request_gpios()
398 	st->gpio_convst = devm_gpiod_get(dev, "adi,conversion-start",  in ad7606_request_gpios()
400 	if (IS_ERR(st->gpio_convst))  in ad7606_request_gpios()
401 		return PTR_ERR(st->gpio_convst);  in ad7606_request_gpios()
403 	st->gpio_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in ad7606_request_gpios()
404 	if (IS_ERR(st->gpio_reset))  in ad7606_request_gpios()
405 		return PTR_ERR(st->gpio_reset);  in ad7606_request_gpios()
407 	st->gpio_range = devm_gpiod_get_optional(dev, "adi,range",  in ad7606_request_gpios()
409 	if (IS_ERR(st->gpio_range))  in ad7606_request_gpios()
410 		return PTR_ERR(st->gpio_range);  in ad7606_request_gpios()
412 	st->gpio_standby = devm_gpiod_get_optional(dev, "standby",  in ad7606_request_gpios()
414 	if (IS_ERR(st->gpio_standby))  in ad7606_request_gpios()
415 		return PTR_ERR(st->gpio_standby);  in ad7606_request_gpios()
417 	st->gpio_frstdata = devm_gpiod_get_optional(dev, "adi,first-data",  in ad7606_request_gpios()
419 	if (IS_ERR(st->gpio_frstdata))  in ad7606_request_gpios()
420 		return PTR_ERR(st->gpio_frstdata);  in ad7606_request_gpios()
422 	if (!st->chip_info->oversampling_num)  in ad7606_request_gpios()
425 	st->gpio_os = devm_gpiod_get_array_optional(dev,  in ad7606_request_gpios()
428 	return PTR_ERR_OR_ZERO(st->gpio_os);  in ad7606_request_gpios()
440 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_interrupt()  local
443 		gpiod_set_value(st->gpio_convst, 0);  in ad7606_interrupt()
444 		iio_trigger_poll_nested(st->trig);  in ad7606_interrupt()
446 		complete(&st->completion);  in ad7606_interrupt()
455 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_validate_trigger()  local
457 	if (st->trig != trig)  in ad7606_validate_trigger()
465 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_buffer_postenable()  local
467 	gpiod_set_value(st->gpio_convst, 1);  in ad7606_buffer_postenable()
474 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_buffer_predisable()  local
476 	gpiod_set_value(st->gpio_convst, 0);  in ad7606_buffer_predisable()
528 	struct ad7606_state *st;  in ad7606_probe()  local
532 	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));  in ad7606_probe()
536 	st = iio_priv(indio_dev);  in ad7606_probe()
539 	st->dev = dev;  in ad7606_probe()
540 	mutex_init(&st->lock);  in ad7606_probe()
541 	st->bops = bops;  in ad7606_probe()
542 	st->base_address = base_address;  in ad7606_probe()
544 	st->range[0] = 0;  in ad7606_probe()
545 	st->oversampling = 1;  in ad7606_probe()
546 	st->scale_avail = ad7606_scale_avail;  in ad7606_probe()
547 	st->num_scales = ARRAY_SIZE(ad7606_scale_avail);  in ad7606_probe()
554 	st->chip_info = &ad7606_chip_info_tbl[id];  in ad7606_probe()
556 	if (st->chip_info->oversampling_num) {  in ad7606_probe()
557 		st->oversampling_avail = st->chip_info->oversampling_avail;  in ad7606_probe()
558 		st->num_os_ratios = st->chip_info->oversampling_num;  in ad7606_probe()
561 	ret = ad7606_request_gpios(st);  in ad7606_probe()
565 	if (st->gpio_os) {  in ad7606_probe()
566 		if (st->gpio_range)  in ad7606_probe()
571 		if (st->gpio_range)  in ad7606_probe()
578 	indio_dev->channels = st->chip_info->channels;  in ad7606_probe()
579 	indio_dev->num_channels = st->chip_info->num_channels;  in ad7606_probe()
581 	init_completion(&st->completion);  in ad7606_probe()
583 	ret = ad7606_reset(st);  in ad7606_probe()
585 		dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n");  in ad7606_probe()
588 	if (st->chip_info->init_delay_ms) {  in ad7606_probe()
589 		if (msleep_interruptible(st->chip_info->init_delay_ms))  in ad7606_probe()
593 	st->write_scale = ad7606_write_scale_hw;  in ad7606_probe()
594 	st->write_os = ad7606_write_os_hw;  in ad7606_probe()
596 	if (st->bops->sw_mode_config)  in ad7606_probe()
597 		st->sw_mode_en = device_property_present(st->dev,  in ad7606_probe()
600 	if (st->sw_mode_en) {  in ad7606_probe()
602 		st->scale_avail = ad7616_sw_scale_avail;  in ad7606_probe()
603 		st->num_scales = ARRAY_SIZE(ad7616_sw_scale_avail);  in ad7606_probe()
606 		memset32(st->range, 2, ARRAY_SIZE(st->range));  in ad7606_probe()
609 		ret = st->bops->sw_mode_config(indio_dev);  in ad7606_probe()
614 	st->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",  in ad7606_probe()
617 	if (!st->trig)  in ad7606_probe()
620 	st->trig->ops = &ad7606_trigger_ops;  in ad7606_probe()
621 	iio_trigger_set_drvdata(st->trig, indio_dev);  in ad7606_probe()
622 	ret = devm_iio_trigger_register(dev, st->trig);  in ad7606_probe()
626 	indio_dev->trig = iio_trigger_get(st->trig);  in ad7606_probe()
652 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_suspend()  local
654 	if (st->gpio_standby) {  in ad7606_suspend()
655 		gpiod_set_value(st->gpio_range, 1);  in ad7606_suspend()
656 		gpiod_set_value(st->gpio_standby, 1);  in ad7606_suspend()
665 	struct ad7606_state *st = iio_priv(indio_dev);  in ad7606_resume()  local
667 	if (st->gpio_standby) {  in ad7606_resume()
668 		gpiod_set_value(st->gpio_range, st->range[0]);  in ad7606_resume()
669 		gpiod_set_value(st->gpio_standby, 1);  in ad7606_resume()
670 		ad7606_reset(st);  in ad7606_resume()