1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * ADXL345/346 Three-Axis Digital Accelerometers
25 #define OFSX		0x1E	/* R/W X-axis offset */
26 #define OFSY		0x1F	/* R/W Y-axis offset */
27 #define OFSZ		0x20	/* R/W Z-axis offset */
34 #define ACT_INACT_CTL	0x27	/* R/W Axis enable control for activity and */
36 #define THRESH_FF	0x28	/* R/W Free-fall threshold */
37 #define TIME_FF		0x29	/* R/W Free-fall time */
38 #define TAP_AXES	0x2A	/* R/W Axis control for tap/double tap */
46 #define DATAX0		0x32	/* R   X-Axis Data 0 */
47 #define DATAX1		0x33	/* R   X-Axis Data 1 */
48 #define DATAY0		0x34	/* R   Y-Axis Data 0 */
49 #define DATAY1		0x35	/* R   Y-Axis Data 1 */
50 #define DATAZ0		0x36	/* R   Z-Axis Data 0 */
51 #define DATAZ1		0x37	/* R   Z-Axis Data 1 */
68 #define INACTIVITY	(1 << 3)
78 #define INACT_ACDC	(1 << 3)
84 #define SUPPRESS	(1 << 3)
93 #define ASLEEP		(1 << 3)
105 #define PCTL_MEASURE	(1 << 3)
113 #define FULL_RES	(1 << 3)
119 #define RANGE_PM_16g	3
122  * Maximum value our axis may get in full res mode for the input device
128  * Maximum value our axis may get in fixed res mode for the input device
138 #define FIFO_TRIGGER	3
150 #define XTAP		(1 << 3)
161 #define ADXL346_3D_VALID		(1 << 3)
164 #define ADXL346_2D_PORTRAIT_NEG		1	/* -X */
166 #define ADXL346_2D_LANDSCAPE_NEG	3	/* -Y */
168 #define ADXL346_3D_FRONT		3	/* +X */
169 #define ADXL346_3D_BACK			4	/* -X */
171 #define ADXL346_3D_LEFT			5	/* -Y */
173 #define ADXL346_3D_BOTTOM		6	/* -Z */
181 #define AC_READ(ac, reg)	((ac)->bops->read((ac)->dev, reg))
182 #define AC_WRITE(ac, reg, val)	((ac)->bops->write((ac)->dev, reg, val))
214 	.tap_duration = 3,
221 	.inactivity_time = 3,
238 static void adxl34x_get_triple(struct adxl34x *ac, struct axis_triple *axis)  in adxl34x_get_triple()  argument
240 	__le16 buf[3];  in adxl34x_get_triple()
242 	ac->bops->read_block(ac->dev, DATAX0, DATAZ1 - DATAX0 + 1, buf);  in adxl34x_get_triple()
244 	guard(mutex)(&ac->mutex);  in adxl34x_get_triple()
246 	ac->saved.x = (s16) le16_to_cpu(buf[0]);  in adxl34x_get_triple()
247 	axis->x = ac->saved.x;  in adxl34x_get_triple()
249 	ac->saved.y = (s16) le16_to_cpu(buf[1]);  in adxl34x_get_triple()
250 	axis->y = ac->saved.y;  in adxl34x_get_triple()
252 	ac->saved.z = (s16) le16_to_cpu(buf[2]);  in adxl34x_get_triple()
253 	axis->z = ac->saved.z;  in adxl34x_get_triple()
258 	struct adxl34x_platform_data *pdata = &ac->pdata;  in adxl34x_service_ev_fifo()
259 	struct axis_triple axis;  in adxl34x_service_ev_fifo()  local
261 	adxl34x_get_triple(ac, &axis);  in adxl34x_service_ev_fifo()
263 	input_event(ac->input, pdata->ev_type, pdata->ev_code_x,  in adxl34x_service_ev_fifo()
264 		    axis.x - ac->swcal.x);  in adxl34x_service_ev_fifo()
265 	input_event(ac->input, pdata->ev_type, pdata->ev_code_y,  in adxl34x_service_ev_fifo()
266 		    axis.y - ac->swcal.y);  in adxl34x_service_ev_fifo()
267 	input_event(ac->input, pdata->ev_type, pdata->ev_code_z,  in adxl34x_service_ev_fifo()
268 		    axis.z - ac->swcal.z);  in adxl34x_service_ev_fifo()
284 		if (status & (1 << (ADXL_Z_AXIS - i)))  in adxl34x_send_key_events()
285 			input_report_key(ac->input,  in adxl34x_send_key_events()
286 					 pdata->ev_code_tap[i], press);  in adxl34x_send_key_events()
294 	input_sync(ac->input);  in adxl34x_do_tap()
301 	struct adxl34x_platform_data *pdata = &ac->pdata;  in adxl34x_irq()
309 	if (pdata->tap_axis_control & (TAP_X_EN | TAP_Y_EN | TAP_Z_EN))  in adxl34x_irq()
317 		adxl34x_report_key_single(ac->input, pdata->ev_code_ff);  in adxl34x_irq()
320 		dev_dbg(ac->dev, "OVERRUN\n");  in adxl34x_irq()
329 	if (pdata->ev_code_act_inactivity) {  in adxl34x_irq()
331 			input_report_key(ac->input,  in adxl34x_irq()
332 					 pdata->ev_code_act_inactivity, 1);  in adxl34x_irq()
334 			input_report_key(ac->input,  in adxl34x_irq()
335 					 pdata->ev_code_act_inactivity, 0);  in adxl34x_irq()
341 	if (pdata->orientation_enable) {  in adxl34x_irq()
343 		if ((pdata->orientation_enable & ADXL_EN_ORIENTATION_2D) &&  in adxl34x_irq()
348 			if (ac->orient2d_saved != orient_code) {  in adxl34x_irq()
349 				ac->orient2d_saved = orient_code;  in adxl34x_irq()
350 				adxl34x_report_key_single(ac->input,  in adxl34x_irq()
351 					pdata->ev_codes_orient_2d[orient_code]);  in adxl34x_irq()
355 		if ((pdata->orientation_enable & ADXL_EN_ORIENTATION_3D) &&  in adxl34x_irq()
358 			orient_code = ADXL346_3D_ORIENT(orient) - 1;  in adxl34x_irq()
360 			if (ac->orient3d_saved != orient_code) {  in adxl34x_irq()
361 				ac->orient3d_saved = orient_code;  in adxl34x_irq()
362 				adxl34x_report_key_single(ac->input,  in adxl34x_irq()
363 					pdata->ev_codes_orient_3d[orient_code]);  in adxl34x_irq()
370 		if (pdata->fifo_mode)  in adxl34x_irq()
375 		for (; samples > 0; samples--) {  in adxl34x_irq()
387 			 * greater than 1.5 MHz to de-assert the CS pin to ensure a  in adxl34x_irq()
391 			if (ac->fifo_delay && (samples > 1))  in adxl34x_irq()
392 				udelay(3);  in adxl34x_irq()
396 	input_sync(ac->input);  in adxl34x_irq()
412 	AC_WRITE(ac, POWER_CTL, ac->pdata.power_mode | PCTL_MEASURE);  in __adxl34x_enable()
419 	guard(mutex)(&ac->mutex);  in adxl34x_suspend()
421 	if (!ac->suspended && !ac->disabled && ac->opened)  in adxl34x_suspend()
424 	ac->suspended = true;  in adxl34x_suspend()
433 	guard(mutex)(&ac->mutex);  in adxl34x_resume()
435 	if (ac->suspended && !ac->disabled && ac->opened)  in adxl34x_resume()
438 	ac->suspended = false;  in adxl34x_resume()
448 	return sprintf(buf, "%u\n", ac->disabled);  in adxl34x_disable_show()
463 	guard(mutex)(&ac->mutex);  in adxl34x_disable_store()
465 	if (!ac->suspended && ac->opened) {  in adxl34x_disable_store()
467 			if (!ac->disabled)  in adxl34x_disable_store()
470 			if (ac->disabled)  in adxl34x_disable_store()
475 	ac->disabled = !!val;  in adxl34x_disable_store()
487 	guard(mutex)(&ac->mutex);  in adxl34x_calibrate_show()
490 		       ac->hwcal.x * 4 + ac->swcal.x,  in adxl34x_calibrate_show()
491 		       ac->hwcal.y * 4 + ac->swcal.y,  in adxl34x_calibrate_show()
492 		       ac->hwcal.z * 4 + ac->swcal.z);  in adxl34x_calibrate_show()
506 	guard(mutex)(&ac->mutex);  in adxl34x_calibrate_store()
508 	ac->hwcal.x -= (ac->saved.x / 4);  in adxl34x_calibrate_store()
509 	ac->swcal.x = ac->saved.x % 4;  in adxl34x_calibrate_store()
511 	ac->hwcal.y -= (ac->saved.y / 4);  in adxl34x_calibrate_store()
512 	ac->swcal.y = ac->saved.y % 4;  in adxl34x_calibrate_store()
514 	ac->hwcal.z -= (ac->saved.z / 4);  in adxl34x_calibrate_store()
515 	ac->swcal.z = ac->saved.z % 4;  in adxl34x_calibrate_store()
517 	AC_WRITE(ac, OFSX, (s8) ac->hwcal.x);  in adxl34x_calibrate_store()
518 	AC_WRITE(ac, OFSY, (s8) ac->hwcal.y);  in adxl34x_calibrate_store()
519 	AC_WRITE(ac, OFSZ, (s8) ac->hwcal.z);  in adxl34x_calibrate_store()
532 	return sprintf(buf, "%u\n", RATE(ac->pdata.data_rate));  in adxl34x_rate_show()
547 	guard(mutex)(&ac->mutex);  in adxl34x_rate_store()
549 	ac->pdata.data_rate = RATE(val);  in adxl34x_rate_store()
551 		 ac->pdata.data_rate |  in adxl34x_rate_store()
552 			(ac->pdata.low_power_mode ? LOW_POWER : 0));  in adxl34x_rate_store()
565 		ac->pdata.power_mode & (PCTL_AUTO_SLEEP | PCTL_LINK) ? 1 : 0);  in adxl34x_autosleep_show()
580 	guard(mutex)(&ac->mutex);  in adxl34x_autosleep_store()
583 		ac->pdata.power_mode |= (PCTL_AUTO_SLEEP | PCTL_LINK);  in adxl34x_autosleep_store()
585 		ac->pdata.power_mode &= ~(PCTL_AUTO_SLEEP | PCTL_LINK);  in adxl34x_autosleep_store()
587 	if (!ac->disabled && !ac->suspended && ac->opened)  in adxl34x_autosleep_store()
588 		AC_WRITE(ac, POWER_CTL, ac->pdata.power_mode | PCTL_MEASURE);  in adxl34x_autosleep_store()
601 	guard(mutex)(&ac->mutex);  in adxl34x_position_show()
604 		       ac->saved.x, ac->saved.y, ac->saved.z);  in adxl34x_position_show()
625 	guard(mutex)(&ac->mutex);  in adxl34x_write_store()
660 	guard(mutex)(&ac->mutex);  in adxl34x_input_open()
662 	if (!ac->suspended && !ac->disabled)  in adxl34x_input_open()
665 	ac->opened = true;  in adxl34x_input_open()
674 	guard(mutex)(&ac->mutex);  in adxl34x_input_close()
676 	if (!ac->suspended && !ac->disabled)  in adxl34x_input_close()
679 	ac->opened = false;  in adxl34x_input_close()
694 		return ERR_PTR(-ENODEV);  in adxl34x_probe()
699 		return ERR_PTR(-ENOMEM);  in adxl34x_probe()
703 		return ERR_PTR(-ENOMEM);  in adxl34x_probe()
705 	ac->fifo_delay = fifo_delay_default;  in adxl34x_probe()
714 	ac->pdata = *pdata;  in adxl34x_probe()
715 	pdata = &ac->pdata;  in adxl34x_probe()
717 	ac->input = input_dev;  in adxl34x_probe()
718 	ac->dev = dev;  in adxl34x_probe()
719 	ac->irq = irq;  in adxl34x_probe()
720 	ac->bops = bops;  in adxl34x_probe()
722 	mutex_init(&ac->mutex);  in adxl34x_probe()
724 	input_dev->name = "ADXL34x accelerometer";  in adxl34x_probe()
729 		ac->model = 345;  in adxl34x_probe()
732 		ac->model = 346;  in adxl34x_probe()
735 		dev_err(dev, "Failed to probe %s\n", input_dev->name);  in adxl34x_probe()
736 		return ERR_PTR(-ENODEV);  in adxl34x_probe()
739 	snprintf(ac->phys, sizeof(ac->phys), "%s/input0", dev_name(dev));  in adxl34x_probe()
741 	input_dev->phys = ac->phys;  in adxl34x_probe()
742 	input_dev->id.product = ac->model;  in adxl34x_probe()
743 	input_dev->id.bustype = bops->bustype;  in adxl34x_probe()
744 	input_dev->open = adxl34x_input_open;  in adxl34x_probe()
745 	input_dev->close = adxl34x_input_close;  in adxl34x_probe()
749 	if (ac->pdata.ev_type == EV_REL) {  in adxl34x_probe()
755 		if (pdata->data_range & FULL_RES)  in adxl34x_probe()
756 			range = ADXL_FULLRES_MAX_VAL;	/* Signed 13-bit */  in adxl34x_probe()
758 			range = ADXL_FIXEDRES_MAX_VAL;	/* Signed 10-bit */  in adxl34x_probe()
760 		input_set_abs_params(input_dev, ABS_X, -range, range, 3, 3);  in adxl34x_probe()
761 		input_set_abs_params(input_dev, ABS_Y, -range, range, 3, 3);  in adxl34x_probe()
762 		input_set_abs_params(input_dev, ABS_Z, -range, range, 3, 3);  in adxl34x_probe()
765 	input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_X_AXIS]);  in adxl34x_probe()
766 	input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_Y_AXIS]);  in adxl34x_probe()
767 	input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_Z_AXIS]);  in adxl34x_probe()
769 	if (pdata->ev_code_ff) {  in adxl34x_probe()
770 		ac->int_mask = FREE_FALL;  in adxl34x_probe()
771 		input_set_capability(input_dev, EV_KEY, pdata->ev_code_ff);  in adxl34x_probe()
774 	if (pdata->ev_code_act_inactivity)  in adxl34x_probe()
776 				     pdata->ev_code_act_inactivity);  in adxl34x_probe()
778 	ac->int_mask |= ACTIVITY | INACTIVITY;  in adxl34x_probe()
780 	if (pdata->watermark) {  in adxl34x_probe()
781 		ac->int_mask |= WATERMARK;  in adxl34x_probe()
782 		if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)  in adxl34x_probe()
783 			ac->pdata.fifo_mode |= FIFO_STREAM;  in adxl34x_probe()
785 		ac->int_mask |= DATA_READY;  in adxl34x_probe()
788 	if (pdata->tap_axis_control & (TAP_X_EN | TAP_Y_EN | TAP_Z_EN))  in adxl34x_probe()
789 		ac->int_mask |= SINGLE_TAP | DOUBLE_TAP;  in adxl34x_probe()
791 	if (FIFO_MODE(pdata->fifo_mode) == FIFO_BYPASS)  in adxl34x_probe()
792 		ac->fifo_delay = false;  in adxl34x_probe()
796 	error = devm_request_threaded_irq(dev, ac->irq, NULL, adxl34x_irq,  in adxl34x_probe()
799 		dev_err(dev, "irq %d busy?\n", ac->irq);  in adxl34x_probe()
807 	AC_WRITE(ac, OFSX, pdata->x_axis_offset);  in adxl34x_probe()
808 	ac->hwcal.x = pdata->x_axis_offset;  in adxl34x_probe()
809 	AC_WRITE(ac, OFSY, pdata->y_axis_offset);  in adxl34x_probe()
810 	ac->hwcal.y = pdata->y_axis_offset;  in adxl34x_probe()
811 	AC_WRITE(ac, OFSZ, pdata->z_axis_offset);  in adxl34x_probe()
812 	ac->hwcal.z = pdata->z_axis_offset;  in adxl34x_probe()
813 	AC_WRITE(ac, THRESH_TAP, pdata->tap_threshold);  in adxl34x_probe()
814 	AC_WRITE(ac, DUR, pdata->tap_duration);  in adxl34x_probe()
815 	AC_WRITE(ac, LATENT, pdata->tap_latency);  in adxl34x_probe()
816 	AC_WRITE(ac, WINDOW, pdata->tap_window);  in adxl34x_probe()
817 	AC_WRITE(ac, THRESH_ACT, pdata->activity_threshold);  in adxl34x_probe()
818 	AC_WRITE(ac, THRESH_INACT, pdata->inactivity_threshold);  in adxl34x_probe()
819 	AC_WRITE(ac, TIME_INACT, pdata->inactivity_time);  in adxl34x_probe()
820 	AC_WRITE(ac, THRESH_FF, pdata->free_fall_threshold);  in adxl34x_probe()
821 	AC_WRITE(ac, TIME_FF, pdata->free_fall_time);  in adxl34x_probe()
822 	AC_WRITE(ac, TAP_AXES, pdata->tap_axis_control);  in adxl34x_probe()
823 	AC_WRITE(ac, ACT_INACT_CTL, pdata->act_axis_control);  in adxl34x_probe()
824 	AC_WRITE(ac, BW_RATE, RATE(ac->pdata.data_rate) |  in adxl34x_probe()
825 		 (pdata->low_power_mode ? LOW_POWER : 0));  in adxl34x_probe()
826 	AC_WRITE(ac, DATA_FORMAT, pdata->data_range);  in adxl34x_probe()
827 	AC_WRITE(ac, FIFO_CTL, FIFO_MODE(pdata->fifo_mode) |  in adxl34x_probe()
828 			SAMPLES(pdata->watermark));  in adxl34x_probe()
830 	if (pdata->use_int2) {  in adxl34x_probe()
832 		AC_WRITE(ac, INT_MAP, ac->int_mask | OVERRUN);  in adxl34x_probe()
838 	if (ac->model == 346 && ac->pdata.orientation_enable) {  in adxl34x_probe()
840 			ORIENT_DEADZONE(ac->pdata.deadzone_angle) |  in adxl34x_probe()
841 			ORIENT_DIVISOR(ac->pdata.divisor_length));  in adxl34x_probe()
843 		ac->orient2d_saved = 1234;  in adxl34x_probe()
844 		ac->orient3d_saved = 1234;  in adxl34x_probe()
846 		if (pdata->orientation_enable & ADXL_EN_ORIENTATION_3D)  in adxl34x_probe()
847 			for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_3d); i++)  in adxl34x_probe()
849 						     pdata->ev_codes_orient_3d[i]);  in adxl34x_probe()
851 		if (pdata->orientation_enable & ADXL_EN_ORIENTATION_2D)  in adxl34x_probe()
852 			for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_2d); i++)  in adxl34x_probe()
854 						     pdata->ev_codes_orient_2d[i]);  in adxl34x_probe()
856 		ac->pdata.orientation_enable = 0;  in adxl34x_probe()
859 	AC_WRITE(ac, INT_ENABLE, ac->int_mask | OVERRUN);  in adxl34x_probe()
861 	ac->pdata.power_mode &= (PCTL_AUTO_SLEEP | PCTL_LINK);  in adxl34x_probe()
870 MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer Driver");