40 void ad_sd_set_comm(struct ad_sigma_delta *sigma_delta, uint8_t comm)  in ad_sd_set_comm()  argument
44 	sigma_delta->comm = comm & AD_SD_COMM_CHAN_MASK;  in ad_sd_set_comm()
58 int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,  in ad_sd_write_reg()  argument
61 	uint8_t *data = sigma_delta->tx_buf;  in ad_sd_write_reg()
65 		.cs_change	= sigma_delta->keep_cs_asserted,  in ad_sd_write_reg()
70 	data[0] = (reg << sigma_delta->info->addr_shift) | sigma_delta->comm;  in ad_sd_write_reg()
91 	if (sigma_delta->bus_locked)  in ad_sd_write_reg()
92 		ret = spi_sync_locked(sigma_delta->spi, &m);  in ad_sd_write_reg()
94 		ret = spi_sync(sigma_delta->spi, &m);  in ad_sd_write_reg()
100 static int ad_sd_read_reg_raw(struct ad_sigma_delta *sigma_delta,  in ad_sd_read_reg_raw()  argument
103 	uint8_t *data = sigma_delta->tx_buf;  in ad_sd_read_reg_raw()
112 			.cs_change = sigma_delta->bus_locked,  in ad_sd_read_reg_raw()
119 	if (sigma_delta->info->has_registers) {  in ad_sd_read_reg_raw()
120 		data[0] = reg << sigma_delta->info->addr_shift;  in ad_sd_read_reg_raw()
121 		data[0] |= sigma_delta->info->read_mask;  in ad_sd_read_reg_raw()
122 		data[0] |= sigma_delta->comm;  in ad_sd_read_reg_raw()
127 	if (sigma_delta->bus_locked)  in ad_sd_read_reg_raw()
128 		ret = spi_sync_locked(sigma_delta->spi, &m);  in ad_sd_read_reg_raw()
130 		ret = spi_sync(sigma_delta->spi, &m);  in ad_sd_read_reg_raw()
145 int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta,  in ad_sd_read_reg()  argument
150 	ret = ad_sd_read_reg_raw(sigma_delta, reg, size, sigma_delta->rx_buf);  in ad_sd_read_reg()
156 		*val = get_unaligned_be32(sigma_delta->rx_buf);  in ad_sd_read_reg()
159 		*val = get_unaligned_be24(sigma_delta->rx_buf);  in ad_sd_read_reg()
162 		*val = get_unaligned_be16(sigma_delta->rx_buf);  in ad_sd_read_reg()
165 		*val = sigma_delta->rx_buf[0];  in ad_sd_read_reg()
185 int ad_sd_reset(struct ad_sigma_delta *sigma_delta,  in ad_sd_reset()  argument
198 	ret = spi_write(sigma_delta->spi, buf, size);  in ad_sd_reset()
205 int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,  in ad_sd_calibrate()  argument
211 	ret = ad_sigma_delta_set_channel(sigma_delta, channel);  in ad_sd_calibrate()
215 	spi_bus_lock(sigma_delta->spi->master);  in ad_sd_calibrate()
216 	sigma_delta->bus_locked = true;  in ad_sd_calibrate()
217 	sigma_delta->keep_cs_asserted = true;  in ad_sd_calibrate()
218 	reinit_completion(&sigma_delta->completion);  in ad_sd_calibrate()
220 	ret = ad_sigma_delta_set_mode(sigma_delta, mode);  in ad_sd_calibrate()
224 	sigma_delta->irq_dis = false;  in ad_sd_calibrate()
225 	enable_irq(sigma_delta->spi->irq);  in ad_sd_calibrate()
226 	timeout = wait_for_completion_timeout(&sigma_delta->completion, 2 * HZ);  in ad_sd_calibrate()
228 		sigma_delta->irq_dis = true;  in ad_sd_calibrate()
229 		disable_irq_nosync(sigma_delta->spi->irq);  in ad_sd_calibrate()
235 	sigma_delta->keep_cs_asserted = false;  in ad_sd_calibrate()
236 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE);  in ad_sd_calibrate()
237 	sigma_delta->bus_locked = false;  in ad_sd_calibrate()
238 	spi_bus_unlock(sigma_delta->spi->master);  in ad_sd_calibrate()
252 int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,  in ad_sd_calibrate_all()  argument
259 		ret = ad_sd_calibrate(sigma_delta, cb[i].mode, cb[i].channel);  in ad_sd_calibrate_all()
279 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sigma_delta_single_conversion()  local
288 	ad_sigma_delta_set_channel(sigma_delta, chan->address);  in ad_sigma_delta_single_conversion()
290 	spi_bus_lock(sigma_delta->spi->master);  in ad_sigma_delta_single_conversion()
291 	sigma_delta->bus_locked = true;  in ad_sigma_delta_single_conversion()
292 	sigma_delta->keep_cs_asserted = true;  in ad_sigma_delta_single_conversion()
293 	reinit_completion(&sigma_delta->completion);  in ad_sigma_delta_single_conversion()
295 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_SINGLE);  in ad_sigma_delta_single_conversion()
297 	sigma_delta->irq_dis = false;  in ad_sigma_delta_single_conversion()
298 	enable_irq(sigma_delta->spi->irq);  in ad_sigma_delta_single_conversion()
300 			&sigma_delta->completion, HZ);  in ad_sigma_delta_single_conversion()
307 	if (sigma_delta->info->data_reg != 0)  in ad_sigma_delta_single_conversion()
308 		data_reg = sigma_delta->info->data_reg;  in ad_sigma_delta_single_conversion()
312 	ret = ad_sd_read_reg(sigma_delta, data_reg,  in ad_sigma_delta_single_conversion()
317 	if (!sigma_delta->irq_dis) {  in ad_sigma_delta_single_conversion()
318 		disable_irq_nosync(sigma_delta->spi->irq);  in ad_sigma_delta_single_conversion()
319 		sigma_delta->irq_dis = true;  in ad_sigma_delta_single_conversion()
322 	sigma_delta->keep_cs_asserted = false;  in ad_sigma_delta_single_conversion()
323 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE);  in ad_sigma_delta_single_conversion()
324 	sigma_delta->bus_locked = false;  in ad_sigma_delta_single_conversion()
325 	spi_bus_unlock(sigma_delta->spi->master);  in ad_sigma_delta_single_conversion()
335 	ret = ad_sigma_delta_postprocess_sample(sigma_delta, raw_sample);  in ad_sigma_delta_single_conversion()
345 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sd_buffer_postenable()  local
351 	if (sigma_delta->num_slots == 1) {  in ad_sd_buffer_postenable()
354 		ret = ad_sigma_delta_set_channel(sigma_delta,  in ad_sd_buffer_postenable()
367 			sigma_delta->slots[slot] = indio_dev->channels[i].address;  in ad_sd_buffer_postenable()
372 	sigma_delta->active_slots = slot;  in ad_sd_buffer_postenable()
373 	sigma_delta->current_slot = 0;  in ad_sd_buffer_postenable()
375 	if (sigma_delta->active_slots > 1) {  in ad_sd_buffer_postenable()
376 		ret = ad_sigma_delta_append_status(sigma_delta, true);  in ad_sd_buffer_postenable()
383 	samples_buf = devm_krealloc(&sigma_delta->spi->dev, sigma_delta->samples_buf,  in ad_sd_buffer_postenable()
388 	sigma_delta->samples_buf = samples_buf;  in ad_sd_buffer_postenable()
390 	spi_bus_lock(sigma_delta->spi->master);  in ad_sd_buffer_postenable()
391 	sigma_delta->bus_locked = true;  in ad_sd_buffer_postenable()
392 	sigma_delta->keep_cs_asserted = true;  in ad_sd_buffer_postenable()
394 	ret = ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_CONTINUOUS);  in ad_sd_buffer_postenable()
398 	sigma_delta->irq_dis = false;  in ad_sd_buffer_postenable()
399 	enable_irq(sigma_delta->spi->irq);  in ad_sd_buffer_postenable()
404 	spi_bus_unlock(sigma_delta->spi->master);  in ad_sd_buffer_postenable()
411 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sd_buffer_postdisable()  local
413 	reinit_completion(&sigma_delta->completion);  in ad_sd_buffer_postdisable()
414 	wait_for_completion_timeout(&sigma_delta->completion, HZ);  in ad_sd_buffer_postdisable()
416 	if (!sigma_delta->irq_dis) {  in ad_sd_buffer_postdisable()
417 		disable_irq_nosync(sigma_delta->spi->irq);  in ad_sd_buffer_postdisable()
418 		sigma_delta->irq_dis = true;  in ad_sd_buffer_postdisable()
421 	sigma_delta->keep_cs_asserted = false;  in ad_sd_buffer_postdisable()
422 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE);  in ad_sd_buffer_postdisable()
424 	if (sigma_delta->status_appended)  in ad_sd_buffer_postdisable()
425 		ad_sigma_delta_append_status(sigma_delta, false);  in ad_sd_buffer_postdisable()
427 	ad_sigma_delta_disable_all(sigma_delta);  in ad_sd_buffer_postdisable()
428 	sigma_delta->bus_locked = false;  in ad_sd_buffer_postdisable()
429 	return spi_bus_unlock(sigma_delta->spi->master);  in ad_sd_buffer_postdisable()
436 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sd_trigger_handler()  local
437 	uint8_t *data = sigma_delta->rx_buf;  in ad_sd_trigger_handler()
449 	if (sigma_delta->info->data_reg != 0)  in ad_sd_trigger_handler()
450 		data_reg = sigma_delta->info->data_reg;  in ad_sd_trigger_handler()
455 	if (sigma_delta->status_appended)  in ad_sd_trigger_handler()
465 		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[0]);  in ad_sd_trigger_handler()
477 		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[1]);  in ad_sd_trigger_handler()
485 	if (sigma_delta->active_slots == 1) {  in ad_sd_trigger_handler()
490 	if (sigma_delta->status_appended) {  in ad_sd_trigger_handler()
493 		converted_channel = data[status_pos] & sigma_delta->info->status_ch_mask;  in ad_sd_trigger_handler()
494 		if (converted_channel != sigma_delta->slots[sigma_delta->current_slot]) {  in ad_sd_trigger_handler()
500 			sigma_delta->current_slot = 0;  in ad_sd_trigger_handler()
506 	sample_pos = sample_size * sigma_delta->current_slot;  in ad_sd_trigger_handler()
507 	memcpy(&sigma_delta->samples_buf[sample_pos], data, sample_size);  in ad_sd_trigger_handler()
508 	sigma_delta->current_slot++;  in ad_sd_trigger_handler()
510 	if (sigma_delta->current_slot == sigma_delta->active_slots) {  in ad_sd_trigger_handler()
511 		sigma_delta->current_slot = 0;  in ad_sd_trigger_handler()
512 		iio_push_to_buffers_with_timestamp(indio_dev, sigma_delta->samples_buf,  in ad_sd_trigger_handler()
518 	sigma_delta->irq_dis = false;  in ad_sd_trigger_handler()
519 	enable_irq(sigma_delta->spi->irq);  in ad_sd_trigger_handler()
526 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sd_validate_scan_mask()  local
528 	return bitmap_weight(mask, indio_dev->masklength) <= sigma_delta->num_slots;  in ad_sd_validate_scan_mask()
539 	struct ad_sigma_delta *sigma_delta = private;  in ad_sd_data_rdy_trig_poll()  local
541 	complete(&sigma_delta->completion);  in ad_sd_data_rdy_trig_poll()
543 	sigma_delta->irq_dis = true;  in ad_sd_data_rdy_trig_poll()
544 	iio_trigger_poll(sigma_delta->trig);  in ad_sd_data_rdy_trig_poll()
559 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in ad_sd_validate_trigger()  local
561 	if (sigma_delta->trig != trig)  in ad_sd_validate_trigger()
570 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in devm_ad_sd_probe_trigger()  local
573 	if (dev != &sigma_delta->spi->dev) {  in devm_ad_sd_probe_trigger()
575 			dev_name(dev), dev_name(&sigma_delta->spi->dev));  in devm_ad_sd_probe_trigger()
579 	sigma_delta->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,  in devm_ad_sd_probe_trigger()
581 	if (sigma_delta->trig == NULL)  in devm_ad_sd_probe_trigger()
584 	init_completion(&sigma_delta->completion);  in devm_ad_sd_probe_trigger()
586 	sigma_delta->irq_dis = true;  in devm_ad_sd_probe_trigger()
589 	irq_set_status_flags(sigma_delta->spi->irq, IRQ_DISABLE_UNLAZY);  in devm_ad_sd_probe_trigger()
591 	ret = devm_request_irq(dev, sigma_delta->spi->irq,  in devm_ad_sd_probe_trigger()
593 			       sigma_delta->info->irq_flags | IRQF_NO_AUTOEN,  in devm_ad_sd_probe_trigger()
595 			       sigma_delta);  in devm_ad_sd_probe_trigger()
599 	iio_trigger_set_drvdata(sigma_delta->trig, sigma_delta);  in devm_ad_sd_probe_trigger()
601 	ret = devm_iio_trigger_register(dev, sigma_delta->trig);  in devm_ad_sd_probe_trigger()
606 	indio_dev->trig = iio_trigger_get(sigma_delta->trig);  in devm_ad_sd_probe_trigger()
618 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);  in devm_ad_sd_setup_buffer_and_trigger()  local
621 	sigma_delta->slots = devm_kcalloc(dev, sigma_delta->num_slots,  in devm_ad_sd_setup_buffer_and_trigger()
622 					  sizeof(*sigma_delta->slots), GFP_KERNEL);  in devm_ad_sd_setup_buffer_and_trigger()
623 	if (!sigma_delta->slots)  in devm_ad_sd_setup_buffer_and_trigger()
647 int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,  in ad_sd_init()  argument
650 	sigma_delta->spi = spi;  in ad_sd_init()
651 	sigma_delta->info = info;  in ad_sd_init()
655 		sigma_delta->num_slots = 1;  in ad_sd_init()
657 		sigma_delta->num_slots = info->num_slots;  in ad_sd_init()
659 	if (sigma_delta->num_slots > 1) {  in ad_sd_init()
671 	iio_device_set_drvdata(indio_dev, sigma_delta);  in ad_sd_init()