1 // SPDX-License-Identifier: GPL-2.0-only
6  * Copyright (c) 2008-2009 Jonathan Cameron <jic23@kernel.org>
60 #define KXSD9_CTRL_B_ST		BIT(5) /* Self-test */
65  * struct kxsd9_state - device related storage
69  * @regs: regulators for this device, VDD and IOVDD
88 #define KXSD9_ZERO_G_OFFSET -2048
94 static const char kxsd9_reg_iovdd[] = "iovdd";
108 		return -EINVAL;  in kxsd9_write_scale()
110 	ret = regmap_update_bits(st->map,  in kxsd9_write_scale()
118 	st->scale = i;  in kxsd9_write_scale()
141 	int ret = -EINVAL;  in kxsd9_write_raw()
144 	pm_runtime_get_sync(st->dev);  in kxsd9_write_raw()
149 			return -EINVAL;  in kxsd9_write_raw()
153 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_write_raw()
154 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_write_raw()
163 	int ret = -EINVAL;  in kxsd9_read_raw()
169 	pm_runtime_get_sync(st->dev);  in kxsd9_read_raw()
173 		ret = regmap_bulk_read(st->map, chan->address, &raw_val,  in kxsd9_read_raw()
184 		/* This has a bias of -2048 */  in kxsd9_read_raw()
189 		ret = regmap_read(st->map,  in kxsd9_read_raw()
201 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_read_raw()
202 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_read_raw()
210 	struct iio_dev *indio_dev = pf->indio_dev;  in kxsd9_trigger_handler()
222 	ret = regmap_bulk_read(st->map,  in kxsd9_trigger_handler()
227 		dev_err(st->dev, "error reading data: %d\n", ret);  in kxsd9_trigger_handler()
235 	iio_trigger_notify_done(indio_dev->trig);  in kxsd9_trigger_handler()
244 	pm_runtime_get_sync(st->dev);  in kxsd9_buffer_preenable()
253 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_buffer_postdisable()
254 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_buffer_postdisable()
270 	return &st->orientation;  in kxsd9_get_mount_matrix()
328 	ret = regulator_bulk_enable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_up()
330 		dev_err(st->dev, "Cannot enable regulators\n");  in kxsd9_power_up()
335 	ret = regmap_write(st->map,  in kxsd9_power_up()
345 	ret = regmap_write(st->map,  in kxsd9_power_up()
350 			   st->scale);  in kxsd9_power_up()
355 	 * Power-up time depends on the LPF setting, but typ 15.9 ms, let's  in kxsd9_power_up()
368 	 * Set into low power mode - since there may be more users of the  in kxsd9_power_down()
373 	ret = regmap_clear_bits(st->map, KXSD9_REG_CTRL_B, KXSD9_CTRL_B_ENABLE);  in kxsd9_power_down()
378 	ret = regulator_bulk_disable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_down()
380 		dev_err(st->dev, "Cannot disable regulators\n");  in kxsd9_power_down()
406 		return -ENOMEM;  in kxsd9_common_probe()
409 	st->dev = dev;  in kxsd9_common_probe()
410 	st->map = map;  in kxsd9_common_probe()
412 	indio_dev->channels = kxsd9_channels;  in kxsd9_common_probe()
413 	indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);  in kxsd9_common_probe()
414 	indio_dev->name = name;  in kxsd9_common_probe()
415 	indio_dev->info = &kxsd9_info;  in kxsd9_common_probe()
416 	indio_dev->modes = INDIO_DIRECT_MODE;  in kxsd9_common_probe()
417 	indio_dev->available_scan_masks = kxsd9_scan_masks;  in kxsd9_common_probe()
420 	ret = iio_read_mount_matrix(dev, &st->orientation);  in kxsd9_common_probe()
425 	st->regs[0].supply = kxsd9_reg_vdd;  in kxsd9_common_probe()
426 	st->regs[1].supply = kxsd9_reg_iovdd;  in kxsd9_common_probe()
428 				      ARRAY_SIZE(st->regs),  in kxsd9_common_probe()
429 				      st->regs);  in kxsd9_common_probe()
435 	st->scale = KXSD9_CTRL_C_FS_2G;  in kxsd9_common_probe()
460 	 * start-up time. 20ms start-up time means 2000ms autosuspend,  in kxsd9_common_probe()