1 // SPDX-License-Identifier: GPL-2.0-only
6  * Copyright (c) 2008-2009 Jonathan Cameron <[email protected]>
22 #include <linux/delay.h>
61 #define KXSD9_CTRL_B_ST		BIT(5) /* Self-test */
66  * struct kxsd9_state - device related storage
89 #define KXSD9_ZERO_G_OFFSET -2048
109 		return -EINVAL;  in kxsd9_write_scale()
111 	ret = regmap_update_bits(st->map,  in kxsd9_write_scale()
119 	st->scale = i;  in kxsd9_write_scale()
142 	int ret = -EINVAL;  in kxsd9_write_raw()
145 	pm_runtime_get_sync(st->dev);  in kxsd9_write_raw()
150 			return -EINVAL;  in kxsd9_write_raw()
154 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_write_raw()
155 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_write_raw()
164 	int ret = -EINVAL;  in kxsd9_read_raw()
170 	pm_runtime_get_sync(st->dev);  in kxsd9_read_raw()
174 		ret = regmap_bulk_read(st->map, chan->address, &raw_val,  in kxsd9_read_raw()
185 		/* This has a bias of -2048 */  in kxsd9_read_raw()
190 		ret = regmap_read(st->map,  in kxsd9_read_raw()
202 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_read_raw()
203 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_read_raw()
211 	struct iio_dev *indio_dev = pf->indio_dev;  in kxsd9_trigger_handler()
223 	ret = regmap_bulk_read(st->map,  in kxsd9_trigger_handler()
228 		dev_err(st->dev, "error reading data: %d\n", ret);  in kxsd9_trigger_handler()
236 	iio_trigger_notify_done(indio_dev->trig);  in kxsd9_trigger_handler()
245 	pm_runtime_get_sync(st->dev);  in kxsd9_buffer_preenable()
254 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_buffer_postdisable()
255 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_buffer_postdisable()
271 	return &st->orientation;  in kxsd9_get_mount_matrix()
329 	ret = regulator_bulk_enable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_up()
331 		dev_err(st->dev, "Cannot enable regulators\n");  in kxsd9_power_up()
336 	ret = regmap_write(st->map,  in kxsd9_power_up()
346 	ret = regmap_write(st->map,  in kxsd9_power_up()
351 			   st->scale);  in kxsd9_power_up()
356 	 * Power-up time depends on the LPF setting, but typ 15.9 ms, let's  in kxsd9_power_up()
369 	 * Set into low power mode - since there may be more users of the  in kxsd9_power_down()
374 	ret = regmap_clear_bits(st->map, KXSD9_REG_CTRL_B, KXSD9_CTRL_B_ENABLE);  in kxsd9_power_down()
379 	ret = regulator_bulk_disable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_down()
381 		dev_err(st->dev, "Cannot disable regulators\n");  in kxsd9_power_down()
407 		return -ENOMEM;  in kxsd9_common_probe()
410 	st->dev = dev;  in kxsd9_common_probe()
411 	st->map = map;  in kxsd9_common_probe()
413 	indio_dev->channels = kxsd9_channels;  in kxsd9_common_probe()
414 	indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);  in kxsd9_common_probe()
415 	indio_dev->name = name;  in kxsd9_common_probe()
416 	indio_dev->info = &kxsd9_info;  in kxsd9_common_probe()
417 	indio_dev->modes = INDIO_DIRECT_MODE;  in kxsd9_common_probe()
418 	indio_dev->available_scan_masks = kxsd9_scan_masks;  in kxsd9_common_probe()
421 	ret = iio_read_mount_matrix(dev, &st->orientation);  in kxsd9_common_probe()
426 	st->regs[0].supply = kxsd9_reg_vdd;  in kxsd9_common_probe()
427 	st->regs[1].supply = kxsd9_reg_iovdd;  in kxsd9_common_probe()
429 				      ARRAY_SIZE(st->regs),  in kxsd9_common_probe()
430 				      st->regs);  in kxsd9_common_probe()
436 	st->scale = KXSD9_CTRL_C_FS_2G;  in kxsd9_common_probe()
460 	 * Set autosuspend to two orders of magnitude larger than the  in kxsd9_common_probe()
461 	 * start-up time. 20ms start-up time means 2000ms autosuspend,  in kxsd9_common_probe()