1 // SPDX-License-Identifier: GPL-2.0
4  * Copyright (c) 2019-2020 Artur Rojek <contact@artur-rojek.eu>
19 	s32 fuzz;  member
39 	bytes = joy->chans[0].channel->scan_type.storagebits >> 3;  in adc_joystick_handle()
41 	for (i = 0; i < joy->num_chans; ++i) {  in adc_joystick_handle()
42 		idx = joy->chans[i].channel->scan_index;  in adc_joystick_handle()
43 		endianness = joy->chans[i].channel->scan_type.endianness;  in adc_joystick_handle()
44 		msb = joy->chans[i].channel->scan_type.realbits - 1;  in adc_joystick_handle()
45 		sign = tolower(joy->chans[i].channel->scan_type.sign) == 's';  in adc_joystick_handle()
66 			return -EINVAL;  in adc_joystick_handle()
69 		val >>= joy->chans[i].channel->scan_type.shift;  in adc_joystick_handle()
74 		input_report_abs(joy->input, joy->axes[i].code, val);  in adc_joystick_handle()
77 	input_sync(joy->input);  in adc_joystick_handle()
85 	struct device *devp = &dev->dev;  in adc_joystick_open()
88 	ret = iio_channel_start_all_cb(joy->buffer);  in adc_joystick_open()
99 	iio_channel_stop_all_cb(joy->buffer);  in adc_joystick_close()
116 		return -EINVAL;  in adc_joystick_set_axes()
119 	if (num_axes != joy->num_chans) {  in adc_joystick_set_axes()
121 			num_axes, joy->num_chans);  in adc_joystick_set_axes()
122 		return -EINVAL;  in adc_joystick_set_axes()
127 		return -ENOMEM;  in adc_joystick_set_axes()
137 			error = -EINVAL;  in adc_joystick_set_axes()
149 		error = fwnode_property_read_u32_array(child, "abs-range",  in adc_joystick_set_axes()
152 			dev_err(dev, "abs-range invalid or missing\n");  in adc_joystick_set_axes()
156 		fwnode_property_read_u32(child, "abs-fuzz", &axes[i].fuzz);  in adc_joystick_set_axes()
157 		fwnode_property_read_u32(child, "abs-flat", &axes[i].flat);  in adc_joystick_set_axes()
159 		input_set_abs_params(joy->input, axes[i].code,  in adc_joystick_set_axes()
161 				     axes[i].fuzz, axes[i].flat);  in adc_joystick_set_axes()
162 		input_set_capability(joy->input, EV_ABS, axes[i].code);  in adc_joystick_set_axes()
165 	joy->axes = axes;  in adc_joystick_set_axes()
176 	struct device *dev = &pdev->dev;  in adc_joystick_probe()
185 		return -ENOMEM;  in adc_joystick_probe()
187 	joy->chans = devm_iio_channel_get_all(dev);  in adc_joystick_probe()
188 	if (IS_ERR(joy->chans)) {  in adc_joystick_probe()
189 		error = PTR_ERR(joy->chans);  in adc_joystick_probe()
190 		if (error != -EPROBE_DEFER)  in adc_joystick_probe()
196 	for (i = 0; joy->chans[i].indio_dev; i++) {  in adc_joystick_probe()
197 		bits = joy->chans[i].channel->scan_type.storagebits;  in adc_joystick_probe()
200 			return -EINVAL;  in adc_joystick_probe()
202 		if (bits != joy->chans[0].channel->scan_type.storagebits) {  in adc_joystick_probe()
204 			return -EINVAL;  in adc_joystick_probe()
207 	joy->num_chans = i;  in adc_joystick_probe()
212 		return -ENOMEM;  in adc_joystick_probe()
215 	joy->input = input;  in adc_joystick_probe()
216 	input->name = pdev->name;  in adc_joystick_probe()
217 	input->id.bustype = BUS_HOST;  in adc_joystick_probe()
218 	input->open = adc_joystick_open;  in adc_joystick_probe()
219 	input->close = adc_joystick_close;  in adc_joystick_probe()
232 	joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy);  in adc_joystick_probe()
233 	if (IS_ERR(joy->buffer)) {  in adc_joystick_probe()
235 		return PTR_ERR(joy->buffer);  in adc_joystick_probe()
238 	error = devm_add_action_or_reset(dev, adc_joystick_cleanup, joy->buffer);  in adc_joystick_probe()
248 	{ .compatible = "adc-joystick", },
255 		.name = "adc-joystick",
263 MODULE_AUTHOR("Artur Rojek <contact@artur-rojek.eu>");