1 // SPDX-License-Identifier: GPL-2.0
119 	s16 diff; /* Difference of Low Pass Data and Base Line Data */  member
148 		__le16 channels[HX9023S_CH_NUM];  member
314 	return regmap_update_bits(data->regmap, HX9023S_INTERRUPT_CFG,  in hx9023s_interrupt_enable()
320 	return regmap_update_bits(data->regmap, HX9023S_INTERRUPT_CFG,  in hx9023s_interrupt_disable()
327 		return regmap_update_bits(data->regmap,  in hx9023s_data_lock()
332 		return regmap_update_bits(data->regmap,  in hx9023s_data_lock()
348 		ch_pos[i] = data->ch_data[i].channel_positive == HX9023S_NOT_CONNECTED ?  in hx9023s_ch_cfg()
349 			HX9023S_NOT_CONNECTED : conn_cs[data->ch_data[i].channel_positive];  in hx9023s_ch_cfg()
350 		ch_neg[i] = data->ch_data[i].channel_negative == HX9023S_NOT_CONNECTED ?  in hx9023s_ch_cfg()
351 			HX9023S_NOT_CONNECTED : conn_cs[data->ch_data[i].channel_negative];  in hx9023s_ch_cfg()
357 	return regmap_bulk_write(data->regmap, HX9023S_CH0_CFG_7_0, reg_list,  in hx9023s_ch_cfg()
363 	guard(mutex)(&data->mutex);  in hx9023s_write_far_debounce()
364 	return regmap_update_bits(data->regmap, HX9023S_PROX_INT_LOW_CFG,  in hx9023s_write_far_debounce()
371 	guard(mutex)(&data->mutex);  in hx9023s_write_near_debounce()
372 	return regmap_update_bits(data->regmap, HX9023S_PROX_INT_HIGH_CFG,  in hx9023s_write_near_debounce()
381 	ret = regmap_read(data->regmap, HX9023S_PROX_INT_LOW_CFG, val);  in hx9023s_read_far_debounce()
394 	ret = regmap_read(data->regmap, HX9023S_PROX_INT_HIGH_CFG, val);  in hx9023s_read_near_debounce()
412 	ret = regmap_bulk_read(data->regmap, reg, &buf, sizeof(buf));  in hx9023s_get_thres_near()
417 	data->ch_data[ch].thres.near = tmp;  in hx9023s_get_thres_near()
432 	ret = regmap_bulk_read(data->regmap, reg, &buf, sizeof(buf));  in hx9023s_get_thres_far()
437 	data->ch_data[ch].thres.far = tmp;  in hx9023s_get_thres_far()
448 	data->ch_data[ch].thres.near = ((val / 32) & GENMASK(9, 0)) * 32;  in hx9023s_set_thres_near()
452 	return regmap_bulk_write(data->regmap, reg, &val_le16, sizeof(val_le16));  in hx9023s_set_thres_near()
460 	data->ch_data[ch].thres.far = ((val / 32) & GENMASK(9, 0)) * 32;  in hx9023s_set_thres_far()
464 	return regmap_bulk_write(data->regmap, reg, &val_le16, sizeof(val_le16));  in hx9023s_set_thres_far()
469 	return regmap_read(data->regmap, HX9023S_PROX_STATUS, &data->prox_state_reg);  in hx9023s_get_prox_state()
478 	ret = regmap_read(data->regmap, HX9023S_RAW_BL_RD_CFG, &buf);  in hx9023s_data_select()
484 		data->ch_data[i].sel_diff = test_bit(i, &tmp);  in hx9023s_data_select()
485 		data->ch_data[i].sel_lp = !data->ch_data[i].sel_diff;  in hx9023s_data_select()
486 		data->ch_data[i].sel_bl = test_bit(i + 4, &tmp);  in hx9023s_data_select()
487 		data->ch_data[i].sel_raw = !data->ch_data[i].sel_bl;  in hx9023s_data_select()
490 	ret = regmap_read(data->regmap, HX9023S_INTERRUPT_CFG1, &buf);  in hx9023s_data_select()
495 	data->ch_data[4].sel_diff = test_bit(2, &tmp);  in hx9023s_data_select()
496 	data->ch_data[4].sel_lp = !data->ch_data[4].sel_diff;  in hx9023s_data_select()
497 	data->ch_data[4].sel_bl = test_bit(3, &tmp);  in hx9023s_data_select()
498 	data->ch_data[4].sel_raw = !data->ch_data[4].sel_bl;  in hx9023s_data_select()
518 	/* 3 bytes for each of channels 0 to 3 which have contiguous registers */  in hx9023s_sample()
519 	ret = regmap_bulk_read(data->regmap, HX9023S_RAW_BL_CH0_0, buf, 12);  in hx9023s_sample()
524 	ret = regmap_bulk_read(data->regmap, HX9023S_RAW_BL_CH4_0, buf + 12, 3);  in hx9023s_sample()
530 		data->ch_data[i].raw = 0;  in hx9023s_sample()
531 		data->ch_data[i].bl = 0;  in hx9023s_sample()
532 		if (data->ch_data[i].sel_raw)  in hx9023s_sample()
533 			data->ch_data[i].raw = value;  in hx9023s_sample()
534 		if (data->ch_data[i].sel_bl)  in hx9023s_sample()
535 			data->ch_data[i].bl = value;  in hx9023s_sample()
538 	/* 3 bytes for each of channels 0 to 3 which have contiguous registers */  in hx9023s_sample()
539 	ret = regmap_bulk_read(data->regmap, HX9023S_LP_DIFF_CH0_0, buf, 12);  in hx9023s_sample()
544 	ret = regmap_bulk_read(data->regmap, HX9023S_LP_DIFF_CH4_0, buf + 12, 3);  in hx9023s_sample()
550 		data->ch_data[i].lp = 0;  in hx9023s_sample()
551 		data->ch_data[i].diff = 0;  in hx9023s_sample()
552 		if (data->ch_data[i].sel_lp)  in hx9023s_sample()
553 			data->ch_data[i].lp = value;  in hx9023s_sample()
554 		if (data->ch_data[i].sel_diff)  in hx9023s_sample()
555 			data->ch_data[i].diff = value;  in hx9023s_sample()
559 		if (data->ch_data[i].sel_lp && data->ch_data[i].sel_bl)  in hx9023s_sample()
560 			data->ch_data[i].diff = data->ch_data[i].lp - data->ch_data[i].bl;  in hx9023s_sample()
563 	/* 2 bytes for each of channels 0 to 4 which have contiguous registers */  in hx9023s_sample()
564 	ret = regmap_bulk_read(data->regmap, HX9023S_OFFSET_DAC0_7_0, buf, 10);  in hx9023s_sample()
571 		data->ch_data[i].dac = value;  in hx9023s_sample()
583 	ret = regmap_read(data->regmap, HX9023S_CH_NUM_CFG, &buf);  in hx9023s_ch_en()
587 	data->ch_en_stat = buf;  in hx9023s_ch_en()
588 	if (en && data->ch_en_stat == 0)  in hx9023s_ch_en()
589 		data->prox_state_reg = 0;  in hx9023s_ch_en()
591 	data->ch_data[ch_id].enable = en;  in hx9023s_ch_en()
592 	__assign_bit(ch_id, &data->ch_en_stat, en);  in hx9023s_ch_en()
594 	return regmap_write(data->regmap, HX9023S_CH_NUM_CFG, data->ch_en_stat);  in hx9023s_ch_en()
599 	struct device *dev = regmap_get_device(data->regmap);  in hx9023s_property_get()
604 	data->chan_in_use = 0;  in hx9023s_property_get()
606 		data->ch_data[i].channel_positive = HX9023S_NOT_CONNECTED;  in hx9023s_property_get()
607 		data->ch_data[i].channel_negative = HX9023S_NOT_CONNECTED;  in hx9023s_property_get()
613 			return dev_err_probe(dev, ret < 0 ? ret : -EINVAL,  in hx9023s_property_get()
615 		__set_bit(reg, &data->chan_in_use);  in hx9023s_property_get()
617 		ret = fwnode_property_read_u32(child, "single-channel", &temp);  in hx9023s_property_get()
619 			data->ch_data[reg].channel_positive = temp;  in hx9023s_property_get()
620 			data->ch_data[reg].channel_negative = HX9023S_NOT_CONNECTED;  in hx9023s_property_get()
622 			ret = fwnode_property_read_u32_array(child, "diff-channels",  in hx9023s_property_get()
625 				data->ch_data[reg].channel_positive = array[0];  in hx9023s_property_get()
626 				data->ch_data[reg].channel_negative = array[1];  in hx9023s_property_get()
643 	unsigned long channels = chan_read | chan_event;  in hx9023s_update_chan_en()  local
645 	if ((data->chan_read | data->chan_event) != channels) {  in hx9023s_update_chan_en()
646 		for_each_set_bit(i, &channels, HX9023S_CH_NUM)  in hx9023s_update_chan_en()
647 			hx9023s_ch_en(data, i, test_bit(i, &data->chan_in_use));  in hx9023s_update_chan_en()
648 		for_each_clear_bit(i, &channels, HX9023S_CH_NUM)  in hx9023s_update_chan_en()
652 	data->chan_read = chan_read;  in hx9023s_update_chan_en()
653 	data->chan_event = chan_event;  in hx9023s_update_chan_en()
672 	*val = data->ch_data[chan->channel].diff;  in hx9023s_get_proximity()
681 	ret = regmap_read(data->regmap, HX9023S_PRF_CFG, &index);  in hx9023s_get_samp_freq()
699 	if (chan->type != IIO_PROXIMITY)  in hx9023s_read_raw()
700 		return -EINVAL;  in hx9023s_read_raw()
714 		return -EINVAL;  in hx9023s_read_raw()
720 	struct device *dev = regmap_get_device(data->regmap);  in hx9023s_set_samp_freq()
731 		return -EINVAL;  in hx9023s_set_samp_freq()
734 	return regmap_write(data->regmap, HX9023S_PRF_CFG, i);  in hx9023s_set_samp_freq()
743 	if (chan->type != IIO_PROXIMITY)  in hx9023s_write_raw()
744 		return -EINVAL;  in hx9023s_write_raw()
747 		return -EINVAL;  in hx9023s_write_raw()
757 	if (data->trigger_enabled)  in hx9023s_irq_handler()
758 		iio_trigger_poll(data->trig);  in hx9023s_irq_handler()
779 	prox_changed = (data->chan_prox_stat ^ data->prox_state_reg) & data->chan_event;  in hx9023s_push_events()
783 		dir = (data->prox_state_reg & BIT(chan)) ?  in hx9023s_push_events()
791 	data->chan_prox_stat = data->prox_state_reg;  in hx9023s_push_events()
799 	guard(mutex)(&data->mutex);  in hx9023s_irq_thread_handler()
813 	if (chan->type != IIO_PROXIMITY)  in hx9023s_read_event_val()
814 		return -EINVAL;  in hx9023s_read_event_val()
820 			return hx9023s_get_thres_far(data, chan->channel, val);  in hx9023s_read_event_val()
822 			return hx9023s_get_thres_near(data, chan->channel, val);  in hx9023s_read_event_val()
824 			return -EINVAL;  in hx9023s_read_event_val()
833 			return -EINVAL;  in hx9023s_read_event_val()
836 		return -EINVAL;  in hx9023s_read_event_val()
848 	if (chan->type != IIO_PROXIMITY)  in hx9023s_write_event_val()
849 		return -EINVAL;  in hx9023s_write_event_val()
855 			return hx9023s_set_thres_far(data, chan->channel, val);  in hx9023s_write_event_val()
857 			return hx9023s_set_thres_near(data, chan->channel, val);  in hx9023s_write_event_val()
859 			return -EINVAL;  in hx9023s_write_event_val()
868 			return -EINVAL;  in hx9023s_write_event_val()
871 		return -EINVAL;  in hx9023s_write_event_val()
882 	return test_bit(chan->channel, &data->chan_event);  in hx9023s_read_event_config()
893 	if (test_bit(chan->channel, &data->chan_in_use)) {  in hx9023s_write_event_config()
894 		hx9023s_ch_en(data, chan->channel, state);  in hx9023s_write_event_config()
895 		__assign_bit(chan->channel, &data->chan_event,  in hx9023s_write_event_config()
896 			     data->ch_data[chan->channel].enable);  in hx9023s_write_event_config()
916 	guard(mutex)(&data->mutex);  in hx9023s_set_trigger_state()
919 	else if (!data->chan_read)  in hx9023s_set_trigger_state()
921 	data->trigger_enabled = state;  in hx9023s_set_trigger_state()
933 	struct iio_dev *indio_dev = pf->indio_dev;  in hx9023s_trigger_handler()
935 	struct device *dev = regmap_get_device(data->regmap);  in hx9023s_trigger_handler()
939 	guard(mutex)(&data->mutex);  in hx9023s_trigger_handler()
953 		index = indio_dev->channels[bit].channel;  in hx9023s_trigger_handler()
954 		data->buffer.channels[i++] = cpu_to_le16(data->ch_data[index].diff);  in hx9023s_trigger_handler()
957 	iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,  in hx9023s_trigger_handler()
958 					   pf->timestamp);  in hx9023s_trigger_handler()
961 	iio_trigger_notify_done(indio_dev->trig);  in hx9023s_trigger_handler()
969 	unsigned long channels = 0;  in hx9023s_buffer_preenable()  local
972 	guard(mutex)(&data->mutex);  in hx9023s_buffer_preenable()
974 		__set_bit(indio_dev->channels[bit].channel, &channels);  in hx9023s_buffer_preenable()
976 	hx9023s_update_chan_en(data, channels, data->chan_event);  in hx9023s_buffer_preenable()
985 	guard(mutex)(&data->mutex);  in hx9023s_buffer_postdisable()
986 	hx9023s_update_chan_en(data, 0, data->chan_event);  in hx9023s_buffer_postdisable()
999 	struct device *dev = regmap_get_device(data->regmap);  in hx9023s_id_check()
1003 	ret = regmap_read(data->regmap, HX9023S_DEVICE_ID, &id);  in hx9023s_id_check()
1015 	u8 *cfg_start = bin->data + FW_DATA_OFFSET;  in hx9023s_bin_load()
1020 	for (i = 0; i < bin->reg_count; i++) {  in hx9023s_bin_load()
1023 		ret = regmap_write(data->regmap, addr, val);  in hx9023s_bin_load()
1034 		kzalloc(fw->size + sizeof(*bin), GFP_KERNEL);  in hx9023s_send_cfg()
1036 		return -ENOMEM;  in hx9023s_send_cfg()
1038 	memcpy(bin->data, fw->data, fw->size);  in hx9023s_send_cfg()
1040 	bin->fw_size = fw->size;  in hx9023s_send_cfg()
1041 	bin->fw_ver = bin->data[FW_VER_OFFSET];  in hx9023s_send_cfg()
1042 	bin->reg_count = get_unaligned_le16(bin->data + FW_REG_CNT_OFFSET);  in hx9023s_send_cfg()
1052 	struct device *dev = regmap_get_device(data->regmap);  in hx9023s_cfg_update()
1055 	if (!fw || !fw->data) {  in hx9023s_cfg_update()
1066 	ret = regcache_sync(data->regmap);  in hx9023s_cfg_update()
1073 	ret = regmap_multi_reg_write(data->regmap, hx9023s_reg_init_list,  in hx9023s_cfg_update()
1080 	ret = regcache_sync(data->regmap);  in hx9023s_cfg_update()
1087 	struct device *dev = &client->dev;  in hx9023s_probe()
1094 		return -ENOMEM;  in hx9023s_probe()
1097 	mutex_init(&data->mutex);  in hx9023s_probe()
1099 	data->regmap = devm_regmap_init_i2c(client, &hx9023s_regmap_config);  in hx9023s_probe()
1100 	if (IS_ERR(data->regmap))  in hx9023s_probe()
1101 		return dev_err_probe(dev, PTR_ERR(data->regmap),  in hx9023s_probe()
1116 	indio_dev->name = "hx9023s";  in hx9023s_probe()
1117 	indio_dev->channels = hx9023s_channels;  in hx9023s_probe()
1118 	indio_dev->num_channels = ARRAY_SIZE(hx9023s_channels);  in hx9023s_probe()
1119 	indio_dev->info = &hx9023s_info;  in hx9023s_probe()
1120 	indio_dev->modes = INDIO_DIRECT_MODE;  in hx9023s_probe()
1132 	if (client->irq) {  in hx9023s_probe()
1133 		ret = devm_request_threaded_irq(dev, client->irq,  in hx9023s_probe()
1141 		data->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",  in hx9023s_probe()
1142 						    indio_dev->name,  in hx9023s_probe()
1144 		if (!data->trig)  in hx9023s_probe()
1145 			return dev_err_probe(dev, -ENOMEM,  in hx9023s_probe()
1148 		data->trig->ops = &hx9023s_trigger_ops;  in hx9023s_probe()
1149 		iio_trigger_set_drvdata(data->trig, indio_dev);  in hx9023s_probe()
1151 		ret = devm_iio_trigger_register(dev, data->trig);  in hx9023s_probe()
1172 	guard(mutex)(&data->mutex);  in hx9023s_suspend()
1182 	guard(mutex)(&data->mutex);  in hx9023s_resume()
1183 	if (data->trigger_enabled)  in hx9023s_resume()
1212 		 * are time-consuming. Prefer async so we don't delay boot