1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Loopback driver for rc-core,
8  * which is useful for (scripted) debugging of rc-core without
16 #include <media/rc-core.h>
18 #define DRIVER_NAME	"rc-loopback"
30 	bool idle;  member
41 	struct loopback_dev *lodev = dev->priv;  in loop_set_tx_mask()
49 	lodev->txmask = mask;  in loop_set_tx_mask()
55 	struct loopback_dev *lodev = dev->priv;  in loop_set_tx_carrier()
58 	lodev->txcarrier = carrier;  in loop_set_tx_carrier()
64 	struct loopback_dev *lodev = dev->priv;  in loop_set_tx_duty_cycle()
68 		return -EINVAL;  in loop_set_tx_duty_cycle()
72 	lodev->txduty = duty_cycle;  in loop_set_tx_duty_cycle()
78 	struct loopback_dev *lodev = dev->priv;  in loop_set_rx_carrier_range()
82 		return -EINVAL;  in loop_set_rx_carrier_range()
86 	lodev->rxcarriermin = min;  in loop_set_rx_carrier_range()
87 	lodev->rxcarriermax = max;  in loop_set_rx_carrier_range()
93 	struct loopback_dev *lodev = dev->priv;  in loop_tx_ir()
98 	if (lodev->txcarrier < lodev->rxcarriermin ||  in loop_tx_ir()
99 	    lodev->txcarrier > lodev->rxcarriermax) {  in loop_tx_ir()
104 	if (lodev->learning)  in loop_tx_ir()
109 	if (!(rxmask & lodev->txmask)) {  in loop_tx_ir()
121 	/* Fake a silence long enough to cause us to go idle */  in loop_tx_ir()
123 	rawir.duration = dev->timeout;  in loop_tx_ir()
134 	struct loopback_dev *lodev = dev->priv;  in loop_set_idle()
136 	if (lodev->idle != enable) {  in loop_set_idle()
137 		dprintk("%sing idle mode\n", enable ? "enter" : "exit");  in loop_set_idle()
138 		lodev->idle = enable;  in loop_set_idle()
144 	struct loopback_dev *lodev = dev->priv;  in loop_set_learning_mode()
146 	if (lodev->learning != enable) {  in loop_set_learning_mode()
148 		lodev->learning = !!enable;  in loop_set_learning_mode()
156 	struct loopback_dev *lodev = dev->priv;  in loop_set_carrier_report()
158 	if (lodev->carrierreport != enable) {  in loop_set_carrier_report()
160 		lodev->carrierreport = !!enable;  in loop_set_carrier_report()
175 	if (!sc->mask)  in loop_set_wakeup_filter()
181 		return -ENOMEM;  in loop_set_wakeup_filter()
183 	ret = ir_raw_encode_scancode(dev->wakeup_protocol, sc->data, raw, max);  in loop_set_wakeup_filter()
185 	if (ret == -ENOBUFS)  in loop_set_wakeup_filter()
209 		return -ENOMEM;  in loop_init()
212 	rc->device_name		= "rc-core loopback device";  in loop_init()
213 	rc->input_phys		= "rc-core/virtual";  in loop_init()
214 	rc->input_id.bustype	= BUS_VIRTUAL;  in loop_init()
215 	rc->input_id.version	= 1;  in loop_init()
216 	rc->driver_name		= DRIVER_NAME;  in loop_init()
217 	rc->map_name		= RC_MAP_EMPTY;  in loop_init()
218 	rc->priv		= &loopdev;  in loop_init()
219 	rc->allowed_protocols	= RC_PROTO_BIT_ALL_IR_DECODER;  in loop_init()
220 	rc->allowed_wakeup_protocols = RC_PROTO_BIT_ALL_IR_ENCODER;  in loop_init()
221 	rc->encode_wakeup	= true;  in loop_init()
222 	rc->timeout		= MS_TO_US(100); /* 100 ms */  in loop_init()
223 	rc->min_timeout		= 1;  in loop_init()
224 	rc->max_timeout		= UINT_MAX;  in loop_init()
225 	rc->rx_resolution	= 1;  in loop_init()
226 	rc->tx_resolution	= 1;  in loop_init()
227 	rc->s_tx_mask		= loop_set_tx_mask;  in loop_init()
228 	rc->s_tx_carrier	= loop_set_tx_carrier;  in loop_init()
229 	rc->s_tx_duty_cycle	= loop_set_tx_duty_cycle;  in loop_init()
230 	rc->s_rx_carrier_range	= loop_set_rx_carrier_range;  in loop_init()
231 	rc->tx_ir		= loop_tx_ir;  in loop_init()
232 	rc->s_idle		= loop_set_idle;  in loop_init()
233 	rc->s_learning_mode	= loop_set_learning_mode;  in loop_init()
234 	rc->s_carrier_report	= loop_set_carrier_report;  in loop_init()
235 	rc->s_wakeup_filter	= loop_set_wakeup_filter;  in loop_init()
242 	loopdev.idle		= true;  in loop_init()
268 MODULE_DESCRIPTION("Loopback device for rc-core debugging");