1 // SPDX-License-Identifier: GPL-2.0-or-later
16 #include "hid-ids.h"
54 		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);  in is_not_elan_touchpad()
56 		return (intf->altsetting->desc.bInterfaceNumber !=  in is_not_elan_touchpad()
70 	if (field->report->id == ELAN_SINGLE_FINGER ||  in elan_input_mapping()
71 	    field->report->id == ELAN_MT_FIRST_FINGER ||  in elan_input_mapping()
72 	    field->report->id == ELAN_MT_SECOND_FINGER ||  in elan_input_mapping()
73 	    field->report->id == ELAN_MT_I2C)  in elan_input_mapping()
74 		return -1;  in elan_input_mapping()
87 	dmabuf[3] = param;  in elan_get_device_param()
126 		return -ENOMEM;  in elan_get_device_params()
132 	drvdata->max_x = (dmabuf[4] << 8) | dmabuf[3];  in elan_get_device_params()
138 	drvdata->max_y = (dmabuf[4] << 8) | dmabuf[3];  in elan_get_device_params()
144 	drvdata->res_x = elan_convert_res(dmabuf[3]);  in elan_get_device_params()
145 	drvdata->res_y = elan_convert_res(dmabuf[4]);  in elan_get_device_params()
165 	input = devm_input_allocate_device(&hdev->dev);  in elan_input_configured()
167 		return -ENOMEM;  in elan_input_configured()
169 	input->name = "Elan Touchpad";  in elan_input_configured()
170 	input->phys = hdev->phys;  in elan_input_configured()
171 	input->uniq = hdev->uniq;  in elan_input_configured()
172 	input->id.bustype = hdev->bus;  in elan_input_configured()
173 	input->id.vendor  = hdev->vendor;  in elan_input_configured()
174 	input->id.product = hdev->product;  in elan_input_configured()
175 	input->id.version = hdev->version;  in elan_input_configured()
176 	input->dev.parent = &hdev->dev;  in elan_input_configured()
178 	input_set_abs_params(input, ABS_MT_POSITION_X, 0, drvdata->max_x,  in elan_input_configured()
180 	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, drvdata->max_y,  in elan_input_configured()
185 	__set_bit(BTN_LEFT, input->keybit);  in elan_input_configured()
186 	__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);  in elan_input_configured()
194 	input_abs_set_res(input, ABS_X, drvdata->res_x);  in elan_input_configured()
195 	input_abs_set_res(input, ABS_Y, drvdata->res_y);  in elan_input_configured()
205 	drvdata->input = input;  in elan_input_configured()
213 	struct input_dev *input = drvdata->input;  in elan_report_mt_slot()
222 		y = drvdata->max_y -  in elan_report_mt_slot()
235 	struct input_dev *input = drvdata->input;  in elan_usb_report_input()
238 	 * There is 3 types of reports: for single touch,  in elan_usb_report_input()
239 	 * for multitouch - first finger and for multitouch - second finger  in elan_usb_report_input()
243 	 * byte 1: 1   0   0   0   0   0   0   1  // 0x81 or 0x82  in elan_usb_report_input()
244 	 * byte 2: 0   0   0   0   0   0   0   0  // looks like unused  in elan_usb_report_input()
245 	 * byte 3: f5  f4  f3  f2  f1  0   0   L  in elan_usb_report_input()
246 	 * byte 4: x12 x11 x10 x9  0?  y11 y10 y9  in elan_usb_report_input()
247 	 * byte 5: x8  x7  x6  x5  x4  x3  x2  x1  in elan_usb_report_input()
248 	 * byte 6: y8  y7  y6  y5  y4  y3  y2  y1  in elan_usb_report_input()
249 	 * byte 7: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1  in elan_usb_report_input()
250 	 * byte 8: p8  p7  p6  p5  p4  p3  p2  p1  in elan_usb_report_input()
254 	 * byte 1: 1   0   0   0   0   0   1   1  // 0x83  in elan_usb_report_input()
255 	 * byte 2: x12 x11 x10 x9  0   y11 y10 y9  in elan_usb_report_input()
256 	 * byte 3: x8  x7  x6  x5  x4  x3  x2  x1  in elan_usb_report_input()
257 	 * byte 4: y8  y7  y6  y5  y4  y3  y2  y1  in elan_usb_report_input()
258 	 * byte 5: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1  in elan_usb_report_input()
259 	 * byte 6: p8  p7  p6  p5  p4  p3  p2  p1  in elan_usb_report_input()
260 	 * byte 7: 0   0   0   0   0   0   0   0  in elan_usb_report_input()
261 	 * byte 8: 0   0   0   0   0   0   0   0  in elan_usb_report_input()
263 	 * f5-f1: finger touch bits  in elan_usb_report_input()
268 	 *          returned buf, buf[3]=no-x-traces, buf[4]=no-y-traces.  in elan_usb_report_input()
274 			if (data[2] & BIT(i + 3))  in elan_usb_report_input()
275 				elan_report_mt_slot(drvdata, data + 3, i);  in elan_usb_report_input()
288 		memcpy(drvdata->prev_report, data,  in elan_usb_report_input()
289 		       sizeof(drvdata->prev_report));  in elan_usb_report_input()
295 		u8 *prev_report = drvdata->prev_report;  in elan_usb_report_input()
301 			if (prev_report[2] & BIT(i + 3)) {  in elan_usb_report_input()
304 					elan_report_mt_slot(drvdata, prev_report + 3, i);  in elan_usb_report_input()
321 	struct input_dev *input = drvdata->input;  in elan_i2c_report_input()
331 	 * byte     1: 1   0   0   1   1   1   0   1   // 0x5d  in elan_i2c_report_input()
332 	 * byte     2: f5  f4  f3  f2  f1  0   0   L  in elan_i2c_report_input()
333 	 * byte     3: x12 x11 x10 x9  0?  y11 y10 y9  in elan_i2c_report_input()
334 	 * byte     4: x8  x7  x6  x5  x4  x3  x2  x1  in elan_i2c_report_input()
335 	 * byte     5: y8  y7  y6  y5  y4  y3  y2  y1  in elan_i2c_report_input()
336 	 * byte     6: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1  in elan_i2c_report_input()
337 	 * byte     7: p8  p7  p6  p5  p4  p3  p2  p1  in elan_i2c_report_input()
338 	 * byte  8-12: Same as byte 3-7 for second finger down  in elan_i2c_report_input()
339 	 * byte 13-17: Same as byte 3-7 for third finger down  in elan_i2c_report_input()
340 	 * byte 18-22: Same as byte 3-7 for fourth finger down  in elan_i2c_report_input()
341 	 * byte 23-27: Same as byte 3-7 for fifth finger down  in elan_i2c_report_input()
346 		if (data[1] & BIT(i + 3)) {  in elan_i2c_report_input()
389 	 * This byte sequence will enable multitouch mode and disable  in elan_start_multitouch()
396 		return -ENOMEM;  in elan_start_multitouch()
416 	struct device *dev = led_cdev->dev->parent;  in elan_mute_led_set_brigtness()
423 		return -ENOMEM;  in elan_mute_led_set_brigtness()
437 		if (ret != -ENODEV)  in elan_mute_led_set_brigtness()
439 		return ret < 0 ? ret : -EIO;  in elan_mute_led_set_brigtness()
442 	drvdata->mute_led_state = led_state;  in elan_mute_led_set_brigtness()
449 	struct led_classdev *mute_led = &drvdata->mute_led;  in elan_init_mute_led()
451 	mute_led->name = "elan:red:mute";  in elan_init_mute_led()
452 	mute_led->default_trigger = "audio-mute";  in elan_init_mute_led()
453 	mute_led->brightness_set_blocking = elan_mute_led_set_brigtness;  in elan_init_mute_led()
454 	mute_led->max_brightness = LED_ON;  in elan_init_mute_led()
455 	mute_led->flags = LED_HW_PLUGGABLE;  in elan_init_mute_led()
456 	mute_led->dev = &hdev->dev;  in elan_init_mute_led()
458 	return devm_led_classdev_register(&hdev->dev, mute_led);  in elan_init_mute_led()
466 	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);  in elan_probe()
469 		return -ENOMEM;  in elan_probe()
488 	if (!drvdata->input) {  in elan_probe()
490 		ret = -ENAVAIL;  in elan_probe()
498 	if (id->driver_data & ELAN_HAS_LED) {  in elan_probe()