1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * bebob_command.c - driver for BeBoB based devices
4 *
5 * Copyright (c) 2013-2014 Takashi Sakamoto
6 */
7
8 #include "./bebob.h"
9
10 int avc_audio_set_selector(struct fw_unit *unit, unsigned int subunit_id,
11 unsigned int fb_id, unsigned int num)
12 {
13 u8 *buf;
14 int err;
15
16 buf = kzalloc(12, GFP_KERNEL);
17 if (buf == NULL)
18 return -ENOMEM;
19
20 buf[0] = 0x00; /* AV/C CONTROL */
21 buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */
22 buf[2] = 0xb8; /* FUNCTION BLOCK */
23 buf[3] = 0x80; /* type is 'selector'*/
24 buf[4] = 0xff & fb_id; /* function block id */
25 buf[5] = 0x10; /* control attribute is CURRENT */
26 buf[6] = 0x02; /* selector length is 2 */
27 buf[7] = 0xff & num; /* input function block plug number */
28 buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */
29
30 err = fcp_avc_transaction(unit, buf, 12, buf, 12,
31 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
32 BIT(6) | BIT(7) | BIT(8));
33 if (err < 0)
34 ;
35 else if (err < 9)
36 err = -EIO;
37 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
38 err = -ENOSYS;
39 else if (buf[0] == 0x0a) /* REJECTED */
40 err = -EINVAL;
41 else
42 err = 0;
43
44 kfree(buf);
45 return err;
46 }
47
48 int avc_audio_get_selector(struct fw_unit *unit, unsigned int subunit_id,
49 unsigned int fb_id, unsigned int *num)
50 {
51 u8 *buf;
52 int err;
53
54 buf = kzalloc(12, GFP_KERNEL);
55 if (buf == NULL)
56 return -ENOMEM;
57
58 buf[0] = 0x01; /* AV/C STATUS */
59 buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */
60 buf[2] = 0xb8; /* FUNCTION BLOCK */
61 buf[3] = 0x80; /* type is 'selector'*/
62 buf[4] = 0xff & fb_id; /* function block id */
63 buf[5] = 0x10; /* control attribute is CURRENT */
64 buf[6] = 0x02; /* selector length is 2 */
65 buf[7] = 0xff; /* input function block plug number */
66 buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */
67
68 err = fcp_avc_transaction(unit, buf, 12, buf, 12,
69 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
70 BIT(6) | BIT(8));
71 if (err < 0)
72 ;
73 else if (err < 9)
74 err = -EIO;
75 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
76 err = -ENOSYS;
77 else if (buf[0] == 0x0a) /* REJECTED */
78 err = -EINVAL;
79 else if (buf[0] == 0x0b) /* IN TRANSITION */
80 err = -EAGAIN;
81 if (err < 0)
82 goto end;
83
84 *num = buf[7];
85 err = 0;
86 end:
87 kfree(buf);
88 return err;
89 }
90
91 static inline void
92 avc_bridgeco_fill_extension_addr(u8 *buf, u8 *addr)
93 {
94 buf[1] = addr[0];
95 memcpy(buf + 4, addr + 1, 5);
96 }
97
98 static inline void
99 avc_bridgeco_fill_plug_info_extension_command(u8 *buf, u8 *addr,
100 unsigned int itype)
101 {
102 buf[0] = 0x01; /* AV/C STATUS */
103 buf[2] = 0x02; /* AV/C GENERAL PLUG INFO */
104 buf[3] = 0xc0; /* BridgeCo extension */
105 avc_bridgeco_fill_extension_addr(buf, addr);
106 buf[9] = itype; /* info type */
107 }
108
109 int avc_bridgeco_get_plug_type(struct fw_unit *unit,
110 u8 addr[AVC_BRIDGECO_ADDR_BYTES],
111 enum avc_bridgeco_plug_type *type)
112 {
113 u8 *buf;
114 int err;
115
116 buf = kzalloc(12, GFP_KERNEL);
117 if (buf == NULL)
118 return -ENOMEM;
119
120 /* Info type is 'plug type'. */
121 avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x00);
122
123 err = fcp_avc_transaction(unit, buf, 12, buf, 12,
124 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
125 BIT(6) | BIT(7) | BIT(9));
126 if (err < 0)
127 ;
128 else if (err < 11)
129 err = -EIO;
130 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
131 err = -ENOSYS;
132 else if (buf[0] == 0x0a) /* REJECTED */
133 err = -EINVAL;
134 else if (buf[0] == 0x0b) /* IN TRANSITION */
135 err = -EAGAIN;
136 if (err < 0)
137 goto end;
138
139 *type = buf[10];
140 err = 0;
141 end:
142 kfree(buf);
143 return err;
144 }
145
146 int avc_bridgeco_get_plug_ch_count(struct fw_unit *unit, u8 addr[AVC_BRIDGECO_ADDR_BYTES],
147 unsigned int *ch_count)
148 {
149 u8 *buf;
150 int err;
151
152 buf = kzalloc(12, GFP_KERNEL);
153 if (buf == NULL)
154 return -ENOMEM;
155
156 // Info type is 'plug type'.
157 avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x02);
158
159 err = fcp_avc_transaction(unit, buf, 12, buf, 12,
160 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
161 BIT(6) | BIT(7) | BIT(9));
162 if (err < 0)
163 ;
164 else if (err < 11)
165 err = -EIO;
166 else if (buf[0] == 0x08) // NOT IMPLEMENTED
167 err = -ENOSYS;
168 else if (buf[0] == 0x0a) // REJECTED
169 err = -EINVAL;
170 else if (buf[0] == 0x0b) // IN TRANSITION
171 err = -EAGAIN;
172 if (err < 0)
173 goto end;
174
175 *ch_count = buf[10];
176 err = 0;
177 end:
178 kfree(buf);
179 return err;
180 }
181
182 int avc_bridgeco_get_plug_ch_pos(struct fw_unit *unit,
183 u8 addr[AVC_BRIDGECO_ADDR_BYTES],
184 u8 *buf, unsigned int len)
185 {
186 int err;
187
188 /* Info type is 'channel position'. */
189 avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x03);
190
191 err = fcp_avc_transaction(unit, buf, 12, buf, 256,
192 BIT(1) | BIT(2) | BIT(3) | BIT(4) |
193 BIT(5) | BIT(6) | BIT(7) | BIT(9));
194 if (err < 0)
195 ;
196 else if (err < 11)
197 err = -EIO;
198 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
199 err = -ENOSYS;
200 else if (buf[0] == 0x0a) /* REJECTED */
201 err = -EINVAL;
202 else if (buf[0] == 0x0b) /* IN TRANSITION */
203 err = -EAGAIN;
204 if (err < 0)
205 goto end;
206
207 /* Pick up specific data. */
208 memmove(buf, buf + 10, err - 10);
209 err = 0;
210 end:
211 return err;
212 }
213
214 int avc_bridgeco_get_plug_section_type(struct fw_unit *unit,
215 u8 addr[AVC_BRIDGECO_ADDR_BYTES],
216 unsigned int id, u8 *type)
217 {
218 u8 *buf;
219 int err;
220
221 /* section info includes charactors but this module don't need it */
222 buf = kzalloc(12, GFP_KERNEL);
223 if (buf == NULL)
224 return -ENOMEM;
225
226 /* Info type is 'section info'. */
227 avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x07);
228 buf[10] = 0xff & ++id; /* section id */
229
230 err = fcp_avc_transaction(unit, buf, 12, buf, 12,
231 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
232 BIT(6) | BIT(7) | BIT(9) | BIT(10));
233 if (err < 0)
234 ;
235 else if (err < 12)
236 err = -EIO;
237 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
238 err = -ENOSYS;
239 else if (buf[0] == 0x0a) /* REJECTED */
240 err = -EINVAL;
241 else if (buf[0] == 0x0b) /* IN TRANSITION */
242 err = -EAGAIN;
243 if (err < 0)
244 goto end;
245
246 *type = buf[11];
247 err = 0;
248 end:
249 kfree(buf);
250 return err;
251 }
252
253 int avc_bridgeco_get_plug_input(struct fw_unit *unit,
254 u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 input[7])
255 {
256 int err;
257 u8 *buf;
258
259 buf = kzalloc(18, GFP_KERNEL);
260 if (buf == NULL)
261 return -ENOMEM;
262
263 /* Info type is 'plug input'. */
264 avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x05);
265
266 err = fcp_avc_transaction(unit, buf, 16, buf, 16,
267 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
268 BIT(6) | BIT(7));
269 if (err < 0)
270 ;
271 else if (err < 16)
272 err = -EIO;
273 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
274 err = -ENOSYS;
275 else if (buf[0] == 0x0a) /* REJECTED */
276 err = -EINVAL;
277 else if (buf[0] == 0x0b) /* IN TRANSITION */
278 err = -EAGAIN;
279 if (err < 0)
280 goto end;
281
282 memcpy(input, buf + 10, 5);
283 err = 0;
284 end:
285 kfree(buf);
286 return err;
287 }
288
289 int avc_bridgeco_get_plug_strm_fmt(struct fw_unit *unit,
290 u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 *buf,
291 unsigned int *len, unsigned int eid)
292 {
293 int err;
294
295 /* check given buffer */
296 if ((buf == NULL) || (*len < 12)) {
297 err = -EINVAL;
298 goto end;
299 }
300
301 buf[0] = 0x01; /* AV/C STATUS */
302 buf[2] = 0x2f; /* AV/C STREAM FORMAT SUPPORT */
303 buf[3] = 0xc1; /* Bridgeco extension - List Request */
304 avc_bridgeco_fill_extension_addr(buf, addr);
305 buf[10] = 0xff & eid; /* Entry ID */
306
307 err = fcp_avc_transaction(unit, buf, 12, buf, *len,
308 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
309 BIT(6) | BIT(7) | BIT(10));
310 if (err < 0)
311 ;
312 else if (err < 12)
313 err = -EIO;
314 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
315 err = -ENOSYS;
316 else if (buf[0] == 0x0a) /* REJECTED */
317 err = -EINVAL;
318 else if (buf[0] == 0x0b) /* IN TRANSITION */
319 err = -EAGAIN;
320 else if (buf[10] != eid)
321 err = -EIO;
322 if (err < 0)
323 goto end;
324
325 /* Pick up 'stream format info'. */
326 memmove(buf, buf + 11, err - 11);
327 *len = err - 11;
328 err = 0;
329 end:
330 return err;
331 }
332
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