1 // SPDX-License-Identifier: GPL-2.0
2 // ir-sanyo-decoder.c - handle SANYO IR Pulse/Space protocol
6 // This protocol uses the NEC protocol timings. However, data is formatted as:
7 //	13 bits Custom Code
8 //	13 bits NOT(Custom Code)
9 //	8 bits Key data
10 //	8 bits NOT(Key data)
17 #include "rc-core-priv.h"
40  * ir_sanyo_decode() - Decode one SANYO pulse or space
44  * This function returns -EINVAL if the pulse violates the state machine
48 	struct sanyo_dec *data = &dev->raw->sanyo;  in ir_sanyo_decode()  local
55 			dev_dbg(&dev->dev, "SANYO event overflow received. reset to state 0\n");  in ir_sanyo_decode()
56 			data->state = STATE_INACTIVE;  in ir_sanyo_decode()
61 	dev_dbg(&dev->dev, "SANYO decode started at state %d (%uus %s)\n",  in ir_sanyo_decode()
62 		data->state, ev.duration, TO_STR(ev.pulse));  in ir_sanyo_decode()
64 	switch (data->state) {  in ir_sanyo_decode()
71 			data->count = 0;  in ir_sanyo_decode()
72 			data->state = STATE_HEADER_SPACE;  in ir_sanyo_decode()
83 			data->state = STATE_BIT_PULSE;  in ir_sanyo_decode()
96 		data->state = STATE_BIT_SPACE;  in ir_sanyo_decode()
103 		if (!data->count && geq_margin(ev.duration, SANYO_REPEAT_SPACE, SANYO_UNIT / 2)) {  in ir_sanyo_decode()
105 			dev_dbg(&dev->dev, "SANYO repeat last key\n");  in ir_sanyo_decode()
106 			data->state = STATE_INACTIVE;  in ir_sanyo_decode()
110 		data->bits <<= 1;  in ir_sanyo_decode()
112 			data->bits |= 1;  in ir_sanyo_decode()
115 		data->count++;  in ir_sanyo_decode()
117 		if (data->count == SANYO_NBITS)  in ir_sanyo_decode()
118 			data->state = STATE_TRAILER_PULSE;  in ir_sanyo_decode()
120 			data->state = STATE_BIT_PULSE;  in ir_sanyo_decode()
131 		data->state = STATE_TRAILER_SPACE;  in ir_sanyo_decode()
141 		address     = bitrev16((data->bits >> 29) & 0x1fff) >> 3;  in ir_sanyo_decode()
142 		/* not_address = bitrev16((data->bits >> 16) & 0x1fff) >> 3; */  in ir_sanyo_decode()
143 		command	    = bitrev8((data->bits >>  8) & 0xff);  in ir_sanyo_decode()
144 		not_command = bitrev8((data->bits >>  0) & 0xff);  in ir_sanyo_decode()
147 			dev_dbg(&dev->dev, "SANYO checksum error: received 0x%08llx\n",  in ir_sanyo_decode()
148 				data->bits);  in ir_sanyo_decode()
149 			data->state = STATE_INACTIVE;  in ir_sanyo_decode()
154 		dev_dbg(&dev->dev, "SANYO scancode: 0x%06x\n", scancode);  in ir_sanyo_decode()
156 		data->state = STATE_INACTIVE;  in ir_sanyo_decode()
160 	dev_dbg(&dev->dev, "SANYO decode failed at count %d state %d (%uus %s)\n",  in ir_sanyo_decode()
161 		data->count, data->state, ev.duration, TO_STR(ev.pulse));  in ir_sanyo_decode()
162 	data->state = STATE_INACTIVE;  in ir_sanyo_decode()
163 	return -EINVAL;  in ir_sanyo_decode()
178  * ir_sanyo_encode() - Encode a scancode as a stream of raw events
186  *		-ENOBUFS if there isn't enough space in the array to fit the
196 	raw = ((u64)(bitrev16(scancode >> 8) & 0xfff8) << (8 + 8 + 13 - 3)) |  in ir_sanyo_encode()
197 	      ((u64)(bitrev16(~scancode >> 8) & 0xfff8) << (8 + 8 +  0 - 3)) |  in ir_sanyo_encode()
205 	return e - events;  in ir_sanyo_encode()