5  * Copyright (c) 2008-2009 Jonathan Cameron <jic23@kernel.org>
24 #include <linux/delay.h>
63 #define KXSD9_CTRL_B_ST		BIT(5) /* Self-test */
68  * struct kxsd9_state - device related storage
91 #define KXSD9_ZERO_G_OFFSET -2048
111 		return -EINVAL;  in kxsd9_write_scale()
113 	ret = regmap_update_bits(st->map,  in kxsd9_write_scale()
121 	st->scale = i;  in kxsd9_write_scale()
144 	int ret = -EINVAL;  in kxsd9_write_raw()
147 	pm_runtime_get_sync(st->dev);  in kxsd9_write_raw()
152 			return -EINVAL;  in kxsd9_write_raw()
156 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_write_raw()
157 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_write_raw()
166 	int ret = -EINVAL;  in kxsd9_read_raw()
172 	pm_runtime_get_sync(st->dev);  in kxsd9_read_raw()
176 		ret = regmap_bulk_read(st->map, chan->address, &raw_val,  in kxsd9_read_raw()
187 		/* This has a bias of -2048 */  in kxsd9_read_raw()
192 		ret = regmap_read(st->map,  in kxsd9_read_raw()
204 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_read_raw()
205 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_read_raw()
213 	struct iio_dev *indio_dev = pf->indio_dev;  in kxsd9_trigger_handler()
225 	ret = regmap_bulk_read(st->map,  in kxsd9_trigger_handler()
230 		dev_err(st->dev,  in kxsd9_trigger_handler()
238 	iio_trigger_notify_done(indio_dev->trig);  in kxsd9_trigger_handler()
247 	pm_runtime_get_sync(st->dev);  in kxsd9_buffer_preenable()
256 	pm_runtime_mark_last_busy(st->dev);  in kxsd9_buffer_postdisable()
257 	pm_runtime_put_autosuspend(st->dev);  in kxsd9_buffer_postdisable()
275 	return &st->orientation;  in kxsd9_get_mount_matrix()
333 	ret = regulator_bulk_enable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_up()
335 		dev_err(st->dev, "Cannot enable regulators\n");  in kxsd9_power_up()
340 	ret = regmap_write(st->map,  in kxsd9_power_up()
350 	ret = regmap_write(st->map,  in kxsd9_power_up()
355 			   st->scale);  in kxsd9_power_up()
360 	 * Power-up time depends on the LPF setting, but typ 15.9 ms, let's  in kxsd9_power_up()
361 	 * set 20 ms to allow for some slack.  in kxsd9_power_up()
373 	 * Set into low power mode - since there may be more users of the  in kxsd9_power_down()
378 	ret = regmap_update_bits(st->map,  in kxsd9_power_down()
386 	ret = regulator_bulk_disable(ARRAY_SIZE(st->regs), st->regs);  in kxsd9_power_down()
388 		dev_err(st->dev, "Cannot disable regulators\n");  in kxsd9_power_down()
414 		return -ENOMEM;  in kxsd9_common_probe()
417 	st->dev = dev;  in kxsd9_common_probe()
418 	st->map = map;  in kxsd9_common_probe()
420 	indio_dev->channels = kxsd9_channels;  in kxsd9_common_probe()
421 	indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);  in kxsd9_common_probe()
422 	indio_dev->name = name;  in kxsd9_common_probe()
423 	indio_dev->dev.parent = dev;  in kxsd9_common_probe()
424 	indio_dev->info = &kxsd9_info;  in kxsd9_common_probe()
425 	indio_dev->modes = INDIO_DIRECT_MODE;  in kxsd9_common_probe()
426 	indio_dev->available_scan_masks = kxsd9_scan_masks;  in kxsd9_common_probe()
430 				       "mount-matrix",  in kxsd9_common_probe()
431 				       &st->orientation);  in kxsd9_common_probe()
436 	st->regs[0].supply = kxsd9_reg_vdd;  in kxsd9_common_probe()
437 	st->regs[1].supply = kxsd9_reg_iovdd;  in kxsd9_common_probe()
439 				      ARRAY_SIZE(st->regs),  in kxsd9_common_probe()
440 				      st->regs);  in kxsd9_common_probe()
446 	st->scale = KXSD9_CTRL_C_FS_2G;  in kxsd9_common_probe()
470 	 * Set autosuspend to two orders of magnitude larger than the  in kxsd9_common_probe()
471 	 * start-up time. 20ms start-up time means 2000ms autosuspend,  in kxsd9_common_probe()