1 // SPDX-License-Identifier: GPL-2.0+
7 // Based on em28xx-input.c.
17 #include <media/rc-core.h>
47 	struct i2c_msg msg = { .addr = ir->i2c_dev_addr, .flags = 0,  in au8522_rc_write()
50 	rc = i2c_transfer(ir->dev->i2c_client.adapter, &msg, 1);  in au8522_rc_write()
55 	return (rc == 1) ? 0 : -EIO;  in au8522_rc_write()
63 	struct i2c_msg msg[2] = { { .addr = ir->i2c_dev_addr, .flags = 0,  in au8522_rc_read()
65 				  { .addr = ir->i2c_dev_addr, .flags = I2C_M_RD,  in au8522_rc_read()
75 	rc = i2c_transfer(ir->dev->i2c_client.adapter, msg, 2);  in au8522_rc_read()
80 	return (rc == 2) ? 0 : -EIO;  in au8522_rc_read()
88 	rc = au8522_rc_read(ir, reg, -1, &buf, 1);  in au8522_rc_andor()
118 	int prv_bit, bit, width;  in au0828_get_key_au8522()  local
122 	if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))  in au0828_get_key_au8522()
126 	rc = au8522_rc_read(ir, 0xe1, -1, buf, 1);  in au0828_get_key_au8522()
149 	width = 0;  in au0828_get_key_au8522()
151 		for (j = 7; j >= 0; j--) {  in au0828_get_key_au8522()
154 				width++;  in au0828_get_key_au8522()
159 			 * Fix an au8522 bug: the first pulse event  in au0828_get_key_au8522()
170 				rawir.pulse = true;  in au0828_get_key_au8522()
171 				if (width > NEC_START_SPACE - 2 &&  in au0828_get_key_au8522()
172 				    width < NEC_START_SPACE + 2) {  in au0828_get_key_au8522()
176 						rawir.pulse ? "pulse" : "space",  in au0828_get_key_au8522()
182 						rawir.pulse ? "pulse" : "space",  in au0828_get_key_au8522()
185 				ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
188 			rawir.pulse = prv_bit ? false : true;  in au0828_get_key_au8522()
189 			rawir.duration = AU8522_UNIT * width;  in au0828_get_key_au8522()
191 				rawir.pulse ? "pulse" : "space",  in au0828_get_key_au8522()
193 			ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
195 			width = 1;  in au0828_get_key_au8522()
200 	rawir.pulse = prv_bit ? false : true;  in au0828_get_key_au8522()
201 	rawir.duration = AU8522_UNIT * width;  in au0828_get_key_au8522()
203 		rawir.pulse ? "pulse" : "space",  in au0828_get_key_au8522()
205 	ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
207 	ir_raw_event_handle(ir->rc);  in au0828_get_key_au8522()
221 	rc = ir->get_key_i2c(ir);  in au0828_rc_work()
225 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_work()
230 	struct au0828_rc *ir = rc->priv;  in au0828_rc_start()
232 	INIT_DELAYED_WORK(&ir->work, au0828_rc_work);  in au0828_rc_start()
237 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_start()
244 	struct au0828_rc *ir = rc->priv;  in au0828_rc_stop()
246 	cancel_delayed_work_sync(&ir->work);  in au0828_rc_stop()
249 	if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {  in au0828_rc_stop()
263 		if (i2c_probe_func_quick_read(dev->i2c_client.adapter,  in au0828_probe_i2c_ir()
269 	return -ENODEV;  in au0828_probe_i2c_ir()
276 	int err = -ENOMEM;  in au0828_rc_register()
279 	if (!dev->board.has_ir_i2c || disable_ir)  in au0828_rc_register()
284 		return -ENODEV;  in au0828_rc_register()
292 	ir->dev = dev;  in au0828_rc_register()
293 	dev->ir = ir;  in au0828_rc_register()
294 	ir->rc = rc;  in au0828_rc_register()
296 	rc->priv = ir;  in au0828_rc_register()
297 	rc->open = au0828_rc_start;  in au0828_rc_register()
298 	rc->close = au0828_rc_stop;  in au0828_rc_register()
300 	if (dev->board.has_ir_i2c) {	/* external i2c device */  in au0828_rc_register()
301 		switch (dev->boardnr) {  in au0828_rc_register()
303 			rc->map_name = RC_MAP_HAUPPAUGE;  in au0828_rc_register()
304 			ir->get_key_i2c = au0828_get_key_au8522;  in au0828_rc_register()
307 			err = -ENODEV;  in au0828_rc_register()
311 		ir->i2c_dev_addr = i2c_rc_dev_addr;  in au0828_rc_register()
315 	ir->polling = 100; /* ms */  in au0828_rc_register()
318 	snprintf(ir->name, sizeof(ir->name), "au0828 IR (%s)",  in au0828_rc_register()
319 		 dev->board.name);  in au0828_rc_register()
321 	usb_make_path(dev->usbdev, ir->phys, sizeof(ir->phys));  in au0828_rc_register()
322 	strlcat(ir->phys, "/input0", sizeof(ir->phys));  in au0828_rc_register()
324 	rc->device_name = ir->name;  in au0828_rc_register()
325 	rc->input_phys = ir->phys;  in au0828_rc_register()
326 	rc->input_id.bustype = BUS_USB;  in au0828_rc_register()
327 	rc->input_id.version = 1;  in au0828_rc_register()
328 	rc->input_id.vendor = le16_to_cpu(dev->usbdev->descriptor.idVendor);  in au0828_rc_register()
329 	rc->input_id.product = le16_to_cpu(dev->usbdev->descriptor.idProduct);  in au0828_rc_register()
330 	rc->dev.parent = &dev->usbdev->dev;  in au0828_rc_register()
331 	rc->driver_name = "au0828-input";  in au0828_rc_register()
332 	rc->allowed_protocols = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |  in au0828_rc_register()
340 	pr_info("Remote controller %s initialized\n", ir->name);  in au0828_rc_register()
345 	dev->ir = NULL;  in au0828_rc_register()
353 	struct au0828_rc *ir = dev->ir;  in au0828_rc_unregister()
359 	rc_unregister_device(ir->rc);  in au0828_rc_unregister()
363 	dev->ir = NULL;  in au0828_rc_unregister()
368 	struct au0828_rc *ir = dev->ir;  in au0828_rc_suspend()
375 	cancel_delayed_work_sync(&ir->work);  in au0828_rc_suspend()
385 	struct au0828_rc *ir = dev->ir;  in au0828_rc_resume()
395 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_resume()