179 static long ak8975_raw_to_gauss(u16 data)  in ak8975_raw_to_gauss()  argument
181 	return (((long)data + 128) * 3000) / 256;  in ak8975_raw_to_gauss()
193 static long ak8963_09911_raw_to_gauss(u16 data)  in ak8963_09911_raw_to_gauss()  argument
195 	return (((long)data + 128) * 6000) / 256;  in ak8963_09911_raw_to_gauss()
206 static long ak09912_raw_to_gauss(u16 data)  in ak09912_raw_to_gauss()  argument
208 	return (((long)data + 128) * 1500) / 256;  in ak09912_raw_to_gauss()
247 	long (*raw_to_gauss)(u16 data);
424 static int ak8975_set_mode(struct ak8975_data *data, enum ak_ctrl_mode mode)  in ak8975_set_mode()  argument
429 	regval = (data->cntl_cache & ~data->def->ctrl_masks[CNTL_MODE]) |  in ak8975_set_mode()
430 		 data->def->ctrl_modes[mode];  in ak8975_set_mode()
431 	ret = i2c_smbus_write_byte_data(data->client,  in ak8975_set_mode()
432 					data->def->ctrl_regs[CNTL], regval);  in ak8975_set_mode()
436 	data->cntl_cache = regval;  in ak8975_set_mode()
446 static irqreturn_t ak8975_irq_handler(int irq, void *data)  in ak8975_irq_handler()  argument
448 	struct ak8975_data *ak8975 = data;  in ak8975_irq_handler()
459 static int ak8975_setup_irq(struct ak8975_data *data)  in ak8975_setup_irq()  argument
461 	struct i2c_client *client = data->client;  in ak8975_setup_irq()
465 	init_waitqueue_head(&data->data_ready_queue);  in ak8975_setup_irq()
466 	clear_bit(0, &data->flags);  in ak8975_setup_irq()
470 		irq = gpio_to_irq(data->eoc_gpio);  in ak8975_setup_irq()
474 			      dev_name(&client->dev), data);  in ak8975_setup_irq()
478 			irq, data->eoc_gpio, rc);  in ak8975_setup_irq()
482 	data->eoc_irq = irq;  in ak8975_setup_irq()
495 	struct ak8975_data *data = iio_priv(indio_dev);  in ak8975_setup()  local
499 	ret = ak8975_set_mode(data, FUSE_ROM);  in ak8975_setup()
507 					    data->def->ctrl_regs[ASA_BASE],  in ak8975_setup()
508 					    3, data->asa);  in ak8975_setup()
515 	ret = ak8975_set_mode(data, POWER_DOWN);  in ak8975_setup()
521 	if (data->eoc_gpio > 0 || client->irq > 0) {  in ak8975_setup()
522 		ret = ak8975_setup_irq(data);  in ak8975_setup()
530 	data->raw_to_gauss[0] = data->def->raw_to_gauss(data->asa[0]);  in ak8975_setup()
531 	data->raw_to_gauss[1] = data->def->raw_to_gauss(data->asa[1]);  in ak8975_setup()
532 	data->raw_to_gauss[2] = data->def->raw_to_gauss(data->asa[2]);  in ak8975_setup()
537 static int wait_conversion_complete_gpio(struct ak8975_data *data)  in wait_conversion_complete_gpio()  argument
539 	struct i2c_client *client = data->client;  in wait_conversion_complete_gpio()
546 		if (gpio_get_value(data->eoc_gpio))  in wait_conversion_complete_gpio()
555 	ret = i2c_smbus_read_byte_data(client, data->def->ctrl_regs[ST1]);  in wait_conversion_complete_gpio()
562 static int wait_conversion_complete_polled(struct ak8975_data *data)  in wait_conversion_complete_polled()  argument
564 	struct i2c_client *client = data->client;  in wait_conversion_complete_polled()
573 					       data->def->ctrl_regs[ST1]);  in wait_conversion_complete_polled()
592 static int wait_conversion_complete_interrupt(struct ak8975_data *data)  in wait_conversion_complete_interrupt()  argument
596 	ret = wait_event_timeout(data->data_ready_queue,  in wait_conversion_complete_interrupt()
597 				 test_bit(0, &data->flags),  in wait_conversion_complete_interrupt()
599 	clear_bit(0, &data->flags);  in wait_conversion_complete_interrupt()
609 	struct ak8975_data *data = iio_priv(indio_dev);  in ak8975_read_axis()  local
610 	struct i2c_client *client = data->client;  in ak8975_read_axis()
613 	mutex_lock(&data->lock);  in ak8975_read_axis()
616 	ret = ak8975_set_mode(data, MODE_ONCE);  in ak8975_read_axis()
623 	if (data->eoc_irq)  in ak8975_read_axis()
624 		ret = wait_conversion_complete_interrupt(data);  in ak8975_read_axis()
625 	else if (gpio_is_valid(data->eoc_gpio))  in ak8975_read_axis()
626 		ret = wait_conversion_complete_gpio(data);  in ak8975_read_axis()
628 		ret = wait_conversion_complete_polled(data);  in ak8975_read_axis()
633 	if (ret & data->def->ctrl_masks[ST1_DRDY]) {  in ak8975_read_axis()
635 					       data->def->ctrl_regs[ST2]);  in ak8975_read_axis()
640 		if (ret & (data->def->ctrl_masks[ST2_DERR] |  in ak8975_read_axis()
641 			   data->def->ctrl_masks[ST2_HOFL])) {  in ak8975_read_axis()
650 	ret = i2c_smbus_read_word_data(client, data->def->data_regs[index]);  in ak8975_read_axis()
656 	mutex_unlock(&data->lock);  in ak8975_read_axis()
659 	*val = clamp_t(s16, ret, -data->def->range, data->def->range);  in ak8975_read_axis()
663 	mutex_unlock(&data->lock);  in ak8975_read_axis()
672 	struct ak8975_data *data = iio_priv(indio_dev);  in ak8975_read_raw()  local
679 		*val2 = data->raw_to_gauss[chan->address];  in ak8975_read_raw()
730 	struct ak8975_data *data;  in ak8975_probe()  local
762 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in ak8975_probe()
766 	data = iio_priv(indio_dev);  in ak8975_probe()
769 	data->client = client;  in ak8975_probe()
770 	data->eoc_gpio = eoc_gpio;  in ak8975_probe()
771 	data->eoc_irq = 0;  in ak8975_probe()
788 	data->def = &ak_def_array[chipset];  in ak8975_probe()
789 	err = ak8975_who_i_am(client, data->def->type);  in ak8975_probe()
803 	mutex_init(&data->lock);  in ak8975_probe()