1 // SPDX-License-Identifier: GPL-2.0-only
2 /* ir-sony-decoder.c - handle Sony IR Pulse/Space protocol
9 #include "rc-core-priv.h"
28  * ir_sony_decode() - Decode one Sony pulse or space
32  * This function returns -EINVAL if the pulse violates the state machine
36 	struct sony_dec *data = &dev->raw->sony;  in ir_sony_decode()
43 			data->state = STATE_INACTIVE;  in ir_sony_decode()
50 	dev_dbg(&dev->dev, "Sony decode started at state %d (%uus %s)\n",  in ir_sony_decode()
51 		data->state, ev.duration, TO_STR(ev.pulse));  in ir_sony_decode()
53 	switch (data->state) {  in ir_sony_decode()
62 		data->count = 0;  in ir_sony_decode()
63 		data->state = STATE_HEADER_SPACE;  in ir_sony_decode()
73 		data->state = STATE_BIT_PULSE;  in ir_sony_decode()
80 		data->bits <<= 1;  in ir_sony_decode()
82 			data->bits |= 1;  in ir_sony_decode()
86 		data->count++;  in ir_sony_decode()
87 		data->state = STATE_BIT_SPACE;  in ir_sony_decode()
100 			data->state = STATE_BIT_PULSE;  in ir_sony_decode()
104 		data->state = STATE_FINISHED;  in ir_sony_decode()
114 		switch (data->count) {  in ir_sony_decode()
116 			if (!(dev->enabled_protocols & RC_PROTO_BIT_SONY12))  in ir_sony_decode()
119 			device    = bitrev8((data->bits <<  3) & 0xF8);  in ir_sony_decode()
121 			function  = bitrev8((data->bits >>  4) & 0xFE);  in ir_sony_decode()
125 			if (!(dev->enabled_protocols & RC_PROTO_BIT_SONY15))  in ir_sony_decode()
128 			device    = bitrev8((data->bits >>  0) & 0xFF);  in ir_sony_decode()
130 			function  = bitrev8((data->bits >>  7) & 0xFE);  in ir_sony_decode()
134 			if (!(dev->enabled_protocols & RC_PROTO_BIT_SONY20))  in ir_sony_decode()
137 			device    = bitrev8((data->bits >>  5) & 0xF8);  in ir_sony_decode()
138 			subdevice = bitrev8((data->bits >>  0) & 0xFF);  in ir_sony_decode()
139 			function  = bitrev8((data->bits >> 12) & 0xFE);  in ir_sony_decode()
143 			dev_dbg(&dev->dev, "Sony invalid bitcount %u\n",  in ir_sony_decode()
144 				data->count);  in ir_sony_decode()
149 		dev_dbg(&dev->dev, "Sony(%u) scancode 0x%05x\n", data->count,  in ir_sony_decode()
156 	dev_dbg(&dev->dev, "Sony decode failed at state %d (%uus %s)\n",  in ir_sony_decode()
157 		data->state, ev.duration, TO_STR(ev.pulse));  in ir_sony_decode()
158 	data->state = STATE_INACTIVE;  in ir_sony_decode()
159 	return -EINVAL;  in ir_sony_decode()
162 	data->state = STATE_INACTIVE;  in ir_sony_decode()
176  * ir_sony_encode() - Encode a scancode as a stream of raw events
178  * @protocol:	protocol to encode
179  * @scancode:	scancode to encode
184  *		-ENOBUFS if there isn't enough space in the array to fit the
210 	return e - events;  in ir_sony_encode()
217 	.encode		= ir_sony_encode,