1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ImgTec IR Decoder setup for Sanyo protocol.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2012-2014 Imagination Technologies Ltd.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * From ir-sanyo-decoder.c:
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * This protocol uses the NEC protocol timings. However, data is formatted as:
10*4882a593Smuzhiyun * 13 bits Custom Code
11*4882a593Smuzhiyun * 13 bits NOT(Custom Code)
12*4882a593Smuzhiyun * 8 bits Key data
13*4882a593Smuzhiyun * 8 bits NOT(Key data)
14*4882a593Smuzhiyun *
15*4882a593Smuzhiyun * According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
16*4882a593Smuzhiyun * Information for this protocol is available at the Sanyo LC7461 datasheet.
17*4882a593Smuzhiyun */
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include "img-ir-hw.h"
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun /* Convert Sanyo data to a scancode */
img_ir_sanyo_scancode(int len,u64 raw,u64 enabled_protocols,struct img_ir_scancode_req * request)22*4882a593Smuzhiyun static int img_ir_sanyo_scancode(int len, u64 raw, u64 enabled_protocols,
23*4882a593Smuzhiyun struct img_ir_scancode_req *request)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun unsigned int addr, addr_inv, data, data_inv;
26*4882a593Smuzhiyun /* a repeat code has no data */
27*4882a593Smuzhiyun if (!len)
28*4882a593Smuzhiyun return IMG_IR_REPEATCODE;
29*4882a593Smuzhiyun if (len != 42)
30*4882a593Smuzhiyun return -EINVAL;
31*4882a593Smuzhiyun addr = (raw >> 0) & 0x1fff;
32*4882a593Smuzhiyun addr_inv = (raw >> 13) & 0x1fff;
33*4882a593Smuzhiyun data = (raw >> 26) & 0xff;
34*4882a593Smuzhiyun data_inv = (raw >> 34) & 0xff;
35*4882a593Smuzhiyun /* Validate data */
36*4882a593Smuzhiyun if ((data_inv ^ data) != 0xff)
37*4882a593Smuzhiyun return -EINVAL;
38*4882a593Smuzhiyun /* Validate address */
39*4882a593Smuzhiyun if ((addr_inv ^ addr) != 0x1fff)
40*4882a593Smuzhiyun return -EINVAL;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun /* Normal Sanyo */
43*4882a593Smuzhiyun request->protocol = RC_PROTO_SANYO;
44*4882a593Smuzhiyun request->scancode = addr << 8 | data;
45*4882a593Smuzhiyun return IMG_IR_SCANCODE;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* Convert Sanyo scancode to Sanyo data filter */
img_ir_sanyo_filter(const struct rc_scancode_filter * in,struct img_ir_filter * out,u64 protocols)49*4882a593Smuzhiyun static int img_ir_sanyo_filter(const struct rc_scancode_filter *in,
50*4882a593Smuzhiyun struct img_ir_filter *out, u64 protocols)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun unsigned int addr, addr_inv, data, data_inv;
53*4882a593Smuzhiyun unsigned int addr_m, data_m;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun data = in->data & 0xff;
56*4882a593Smuzhiyun data_m = in->mask & 0xff;
57*4882a593Smuzhiyun data_inv = data ^ 0xff;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun if (in->data & 0xff700000)
60*4882a593Smuzhiyun return -EINVAL;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun addr = (in->data >> 8) & 0x1fff;
63*4882a593Smuzhiyun addr_m = (in->mask >> 8) & 0x1fff;
64*4882a593Smuzhiyun addr_inv = addr ^ 0x1fff;
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun out->data = (u64)data_inv << 34 |
67*4882a593Smuzhiyun (u64)data << 26 |
68*4882a593Smuzhiyun addr_inv << 13 |
69*4882a593Smuzhiyun addr;
70*4882a593Smuzhiyun out->mask = (u64)data_m << 34 |
71*4882a593Smuzhiyun (u64)data_m << 26 |
72*4882a593Smuzhiyun addr_m << 13 |
73*4882a593Smuzhiyun addr_m;
74*4882a593Smuzhiyun return 0;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun /* Sanyo decoder */
78*4882a593Smuzhiyun struct img_ir_decoder img_ir_sanyo = {
79*4882a593Smuzhiyun .type = RC_PROTO_BIT_SANYO,
80*4882a593Smuzhiyun .control = {
81*4882a593Smuzhiyun .decoden = 1,
82*4882a593Smuzhiyun .code_type = IMG_IR_CODETYPE_PULSEDIST,
83*4882a593Smuzhiyun },
84*4882a593Smuzhiyun /* main timings */
85*4882a593Smuzhiyun .unit = 562500, /* 562.5 us */
86*4882a593Smuzhiyun .timings = {
87*4882a593Smuzhiyun /* leader symbol */
88*4882a593Smuzhiyun .ldr = {
89*4882a593Smuzhiyun .pulse = { 16 /* 9ms */ },
90*4882a593Smuzhiyun .space = { 8 /* 4.5ms */ },
91*4882a593Smuzhiyun },
92*4882a593Smuzhiyun /* 0 symbol */
93*4882a593Smuzhiyun .s00 = {
94*4882a593Smuzhiyun .pulse = { 1 /* 562.5 us */ },
95*4882a593Smuzhiyun .space = { 1 /* 562.5 us */ },
96*4882a593Smuzhiyun },
97*4882a593Smuzhiyun /* 1 symbol */
98*4882a593Smuzhiyun .s01 = {
99*4882a593Smuzhiyun .pulse = { 1 /* 562.5 us */ },
100*4882a593Smuzhiyun .space = { 3 /* 1687.5 us */ },
101*4882a593Smuzhiyun },
102*4882a593Smuzhiyun /* free time */
103*4882a593Smuzhiyun .ft = {
104*4882a593Smuzhiyun .minlen = 42,
105*4882a593Smuzhiyun .maxlen = 42,
106*4882a593Smuzhiyun .ft_min = 10, /* 5.625 ms */
107*4882a593Smuzhiyun },
108*4882a593Smuzhiyun },
109*4882a593Smuzhiyun /* repeat codes */
110*4882a593Smuzhiyun .repeat = 108, /* 108 ms */
111*4882a593Smuzhiyun .rtimings = {
112*4882a593Smuzhiyun /* leader symbol */
113*4882a593Smuzhiyun .ldr = {
114*4882a593Smuzhiyun .space = { 4 /* 2.25 ms */ },
115*4882a593Smuzhiyun },
116*4882a593Smuzhiyun /* free time */
117*4882a593Smuzhiyun .ft = {
118*4882a593Smuzhiyun .minlen = 0, /* repeat code has no data */
119*4882a593Smuzhiyun .maxlen = 0,
120*4882a593Smuzhiyun },
121*4882a593Smuzhiyun },
122*4882a593Smuzhiyun /* scancode logic */
123*4882a593Smuzhiyun .scancode = img_ir_sanyo_scancode,
124*4882a593Smuzhiyun .filter = img_ir_sanyo_filter,
125*4882a593Smuzhiyun };
126