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12#include <linux/lirc.h>
13#include <errno.h>
14#include <stdio.h>
15#include <stdlib.h>
16#include <stdbool.h>
17#include <string.h>
18#include <unistd.h>
19#include <poll.h>
20#include <time.h>
21#include <sys/types.h>
22#include <sys/ioctl.h>
23#include <dirent.h>
24#include <sys/stat.h>
25#include <fcntl.h>
26#include "../kselftest.h"
27
28#define TEST_SCANCODES 10
29#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
30#define SYSFS_PATH_MAX 256
31#define DNAME_PATH_MAX 256
32
33static const struct {
34 enum rc_proto proto;
35 const char *name;
36 unsigned int mask;
37 const char *decoder;
38} protocols[] = {
39 { RC_PROTO_RC5, "rc-5", 0x1f7f, "rc-5" },
40 { RC_PROTO_RC5X_20, "rc-5x-20", 0x1f7f3f, "rc-5" },
41 { RC_PROTO_RC5_SZ, "rc-5-sz", 0x2fff, "rc-5-sz" },
42 { RC_PROTO_JVC, "jvc", 0xffff, "jvc" },
43 { RC_PROTO_SONY12, "sony-12", 0x1f007f, "sony" },
44 { RC_PROTO_SONY15, "sony-15", 0xff007f, "sony" },
45 { RC_PROTO_SONY20, "sony-20", 0x1fff7f, "sony" },
46 { RC_PROTO_NEC, "nec", 0xffff, "nec" },
47 { RC_PROTO_NECX, "nec-x", 0xffffff, "nec" },
48 { RC_PROTO_NEC32, "nec-32", 0xffffffff, "nec" },
49 { RC_PROTO_SANYO, "sanyo", 0x1fffff, "sanyo" },
50 { RC_PROTO_RC6_0, "rc-6-0", 0xffff, "rc-6" },
51 { RC_PROTO_RC6_6A_20, "rc-6-6a-20", 0xfffff, "rc-6" },
52 { RC_PROTO_RC6_6A_24, "rc-6-6a-24", 0xffffff, "rc-6" },
53 { RC_PROTO_RC6_6A_32, "rc-6-6a-32", 0xffffffff, "rc-6" },
54 { RC_PROTO_RC6_MCE, "rc-6-mce", 0x00007fff, "rc-6" },
55 { RC_PROTO_SHARP, "sharp", 0x1fff, "sharp" },
56 { RC_PROTO_IMON, "imon", 0x7fffffff, "imon" },
57 { RC_PROTO_RCMM12, "rcmm-12", 0x00000fff, "rc-mm" },
58 { RC_PROTO_RCMM24, "rcmm-24", 0x00ffffff, "rc-mm" },
59 { RC_PROTO_RCMM32, "rcmm-32", 0xffffffff, "rc-mm" },
60};
61
62int lirc_open(const char *rc)
63{
64 struct dirent *dent;
65 char buf[SYSFS_PATH_MAX + DNAME_PATH_MAX];
66 DIR *d;
67 int fd;
68
69 snprintf(buf, sizeof(buf), "/sys/class/rc/%s", rc);
70
71 d = opendir(buf);
72 if (!d)
73 ksft_exit_fail_msg("cannot open %s: %m\n", buf);
74
75 while ((dent = readdir(d)) != NULL) {
76 if (!strncmp(dent->d_name, "lirc", 4)) {
77 snprintf(buf, sizeof(buf), "/dev/%s", dent->d_name);
78 break;
79 }
80 }
81
82 if (!dent)
83 ksft_exit_skip("cannot find lirc device for %s\n", rc);
84
85 closedir(d);
86
87 fd = open(buf, O_RDWR | O_NONBLOCK);
88 if (fd == -1)
89 ksft_exit_fail_msg("cannot open: %s: %m\n", buf);
90
91 return fd;
92}
93
94int main(int argc, char **argv)
95{
96 unsigned int mode;
97 char buf[100];
98 int rlircfd, wlircfd, protocolfd, i, n;
99
100 srand(time(NULL));
101
102 if (argc != 3)
103 ksft_exit_fail_msg("Usage: %s <write rcN> <read rcN>\n",
104 argv[0]);
105
106 rlircfd = lirc_open(argv[2]);
107 mode = LIRC_MODE_SCANCODE;
108 if (ioctl(rlircfd, LIRC_SET_REC_MODE, &mode))
109 ksft_exit_fail_msg("failed to set scancode rec mode %s: %m\n",
110 argv[2]);
111
112 wlircfd = lirc_open(argv[1]);
113 if (ioctl(wlircfd, LIRC_SET_SEND_MODE, &mode))
114 ksft_exit_fail_msg("failed to set scancode send mode %s: %m\n",
115 argv[1]);
116
117 snprintf(buf, sizeof(buf), "/sys/class/rc/%s/protocols", argv[2]);
118 protocolfd = open(buf, O_WRONLY);
119 if (protocolfd == -1)
120 ksft_exit_fail_msg("failed to open %s: %m\n", buf);
121
122 printf("Sending IR on %s and receiving IR on %s.\n", argv[1], argv[2]);
123
124 for (i = 0; i < ARRAY_SIZE(protocols); i++) {
125 if (write(protocolfd, protocols[i].decoder,
126 strlen(protocols[i].decoder)) == -1)
127 ksft_exit_fail_msg("failed to set write decoder\n");
128
129 printf("Testing protocol %s for decoder %s (%d/%d)...\n",
130 protocols[i].name, protocols[i].decoder,
131 i + 1, (int)ARRAY_SIZE(protocols));
132
133 for (n = 0; n < TEST_SCANCODES; n++) {
134 unsigned int scancode = rand() & protocols[i].mask;
135 unsigned int rc_proto = protocols[i].proto;
136
137 if (rc_proto == RC_PROTO_RC6_MCE)
138 scancode |= 0x800f0000;
139
140 if (rc_proto == RC_PROTO_NECX &&
141 (((scancode >> 16) ^ ~(scancode >> 8)) & 0xff) == 0)
142 continue;
143
144 if (rc_proto == RC_PROTO_NEC32 &&
145 (((scancode >> 8) ^ ~scancode) & 0xff) == 0)
146 continue;
147
148 if (rc_proto == RC_PROTO_RCMM32 &&
149 (scancode & 0x000c0000) != 0x000c0000 &&
150 scancode & 0x00008000)
151 continue;
152
153 struct lirc_scancode lsc = {
154 .rc_proto = rc_proto,
155 .scancode = scancode
156 };
157
158 printf("Testing scancode:%x\n", scancode);
159
160 while (write(wlircfd, &lsc, sizeof(lsc)) < 0) {
161 if (errno == EINTR)
162 continue;
163
164 ksft_exit_fail_msg("failed to send ir: %m\n");
165 }
166
167 struct pollfd pfd = { .fd = rlircfd, .events = POLLIN };
168 struct lirc_scancode lsc2;
169
170 poll(&pfd, 1, 1000);
171
172 bool decoded = true;
173
174 while (read(rlircfd, &lsc2, sizeof(lsc2)) < 0) {
175 if (errno == EINTR)
176 continue;
177
178 ksft_test_result_error("no scancode decoded: %m\n");
179 decoded = false;
180 break;
181 }
182
183 if (!decoded)
184 continue;
185
186 if (lsc.rc_proto != lsc2.rc_proto)
187 ksft_test_result_error("decoded protocol is different: %d\n",
188 lsc2.rc_proto);
189
190 else if (lsc.scancode != lsc2.scancode)
191 ksft_test_result_error("decoded scancode is different: %llx\n",
192 lsc2.scancode);
193 else
194 ksft_inc_pass_cnt();
195 }
196
197 printf("OK\n");
198 }
199
200 close(rlircfd);
201 close(wlircfd);
202 close(protocolfd);
203
204 if (ksft_get_fail_cnt() > 0)
205 ksft_exit_fail();
206 else
207 ksft_exit_pass();
208
209 return 0;
210}
211
