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-rw-r--r--sound/firewire/oxfw/Makefile2
-rw-r--r--sound/firewire/oxfw/oxfw-command.c153
-rw-r--r--sound/firewire/oxfw/oxfw.h33
3 files changed, 187 insertions, 1 deletions
diff --git a/sound/firewire/oxfw/Makefile b/sound/firewire/oxfw/Makefile
index 0cf48fd87688..b107134d11d5 100644
--- a/sound/firewire/oxfw/Makefile
+++ b/sound/firewire/oxfw/Makefile
@@ -1,2 +1,2 @@
1snd-oxfw-objs := oxfw-stream.o oxfw-control.o oxfw-pcm.o oxfw.o 1snd-oxfw-objs := oxfw-command.o oxfw-stream.o oxfw-control.o oxfw-pcm.o oxfw.o
2obj-m += snd-oxfw.o 2obj-m += snd-oxfw.o
diff --git a/sound/firewire/oxfw/oxfw-command.c b/sound/firewire/oxfw/oxfw-command.c
new file mode 100644
index 000000000000..12ef3253bc89
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw-command.c
@@ -0,0 +1,153 @@
1/*
2 * oxfw_command.c - a part of driver for OXFW970/971 based devices
3 *
4 * Copyright (c) 2014 Takashi Sakamoto
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8
9#include "oxfw.h"
10
11int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
12 unsigned int pid, u8 *format, unsigned int len)
13{
14 u8 *buf;
15 int err;
16
17 buf = kmalloc(len + 10, GFP_KERNEL);
18 if (buf == NULL)
19 return -ENOMEM;
20
21 buf[0] = 0x00; /* CONTROL */
22 buf[1] = 0xff; /* UNIT */
23 buf[2] = 0xbf; /* EXTENDED STREAM FORMAT INFORMATION */
24 buf[3] = 0xc0; /* SINGLE subfunction */
25 buf[4] = dir; /* Plug Direction */
26 buf[5] = 0x00; /* UNIT */
27 buf[6] = 0x00; /* PCR (Isochronous Plug) */
28 buf[7] = 0xff & pid; /* Plug ID */
29 buf[8] = 0xff; /* Padding */
30 buf[9] = 0xff; /* Support status in response */
31 memcpy(buf + 10, format, len);
32
33 /* do transaction and check buf[1-8] are the same against command */
34 err = fcp_avc_transaction(unit, buf, len + 10, buf, len + 10,
35 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
36 BIT(6) | BIT(7) | BIT(8));
37 if ((err > 0) && (err < len + 10))
38 err = -EIO;
39 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
40 err = -ENOSYS;
41 else if (buf[0] == 0x0a) /* REJECTED */
42 err = -EINVAL;
43 else
44 err = 0;
45
46 kfree(buf);
47
48 return err;
49}
50
51int avc_stream_get_format(struct fw_unit *unit,
52 enum avc_general_plug_dir dir, unsigned int pid,
53 u8 *buf, unsigned int *len, unsigned int eid)
54{
55 unsigned int subfunc;
56 int err;
57
58 if (eid == 0xff)
59 subfunc = 0xc0; /* SINGLE */
60 else
61 subfunc = 0xc1; /* LIST */
62
63 buf[0] = 0x01; /* STATUS */
64 buf[1] = 0xff; /* UNIT */
65 buf[2] = 0xbf; /* EXTENDED STREAM FORMAT INFORMATION */
66 buf[3] = subfunc; /* SINGLE or LIST */
67 buf[4] = dir; /* Plug Direction */
68 buf[5] = 0x00; /* Unit */
69 buf[6] = 0x00; /* PCR (Isochronous Plug) */
70 buf[7] = 0xff & pid; /* Plug ID */
71 buf[8] = 0xff; /* Padding */
72 buf[9] = 0xff; /* support status in response */
73 buf[10] = 0xff & eid; /* entry ID for LIST subfunction */
74 buf[11] = 0xff; /* padding */
75
76 /* do transaction and check buf[1-7] are the same against command */
77 err = fcp_avc_transaction(unit, buf, 12, buf, *len,
78 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
79 BIT(6) | BIT(7));
80 if ((err > 0) && (err < 10))
81 err = -EIO;
82 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
83 err = -ENOSYS;
84 else if (buf[0] == 0x0a) /* REJECTED */
85 err = -EINVAL;
86 else if (buf[0] == 0x0b) /* IN TRANSITION */
87 err = -EAGAIN;
88 /* LIST subfunction has entry ID */
89 else if ((subfunc == 0xc1) && (buf[10] != eid))
90 err = -EIO;
91 if (err < 0)
92 goto end;
93
94 /* keep just stream format information */
95 if (subfunc == 0xc0) {
96 memmove(buf, buf + 10, err - 10);
97 *len = err - 10;
98 } else {
99 memmove(buf, buf + 11, err - 11);
100 *len = err - 11;
101 }
102
103 err = 0;
104end:
105 return err;
106}
107
108int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
109 enum avc_general_plug_dir dir,
110 unsigned short pid)
111{
112 unsigned int sfc;
113 u8 *buf;
114 int err;
115
116 for (sfc = 0; sfc < CIP_SFC_COUNT; sfc++) {
117 if (amdtp_rate_table[sfc] == rate)
118 break;
119 }
120 if (sfc == CIP_SFC_COUNT)
121 return -EINVAL;
122
123 buf = kzalloc(8, GFP_KERNEL);
124 if (buf == NULL)
125 return -ENOMEM;
126
127 buf[0] = 0x02; /* SPECIFIC INQUIRY */
128 buf[1] = 0xff; /* UNIT */
129 if (dir == AVC_GENERAL_PLUG_DIR_IN)
130 buf[2] = 0x19; /* INPUT PLUG SIGNAL FORMAT */
131 else
132 buf[2] = 0x18; /* OUTPUT PLUG SIGNAL FORMAT */
133 buf[3] = 0xff & pid; /* plug id */
134 buf[4] = 0x90; /* EOH_1, Form_1, FMT. AM824 */
135 buf[5] = 0x07 & sfc; /* FDF-hi. AM824, frequency */
136 buf[6] = 0xff; /* FDF-mid. AM824, SYT hi (not used) */
137 buf[7] = 0xff; /* FDF-low. AM824, SYT lo (not used) */
138
139 /* do transaction and check buf[1-5] are the same against command */
140 err = fcp_avc_transaction(unit, buf, 8, buf, 8,
141 BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5));
142 if ((err > 0) && (err < 8))
143 err = -EIO;
144 else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
145 err = -ENOSYS;
146 if (err < 0)
147 goto end;
148
149 err = 0;
150end:
151 kfree(buf);
152 return err;
153}
diff --git a/sound/firewire/oxfw/oxfw.h b/sound/firewire/oxfw/oxfw.h
index a61c75cbaba8..a7031d414441 100644
--- a/sound/firewire/oxfw/oxfw.h
+++ b/sound/firewire/oxfw/oxfw.h
@@ -49,6 +49,39 @@ struct snd_oxfw {
49 s16 volume_max; 49 s16 volume_max;
50}; 50};
51 51
52/*
53 * AV/C Stream Format Information Specification 1.1 Working Draft
54 * (Apr 2005, 1394TA)
55 */
56int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
57 unsigned int pid, u8 *format, unsigned int len);
58int avc_stream_get_format(struct fw_unit *unit,
59 enum avc_general_plug_dir dir, unsigned int pid,
60 u8 *buf, unsigned int *len, unsigned int eid);
61static inline int
62avc_stream_get_format_single(struct fw_unit *unit,
63 enum avc_general_plug_dir dir, unsigned int pid,
64 u8 *buf, unsigned int *len)
65{
66 return avc_stream_get_format(unit, dir, pid, buf, len, 0xff);
67}
68static inline int
69avc_stream_get_format_list(struct fw_unit *unit,
70 enum avc_general_plug_dir dir, unsigned int pid,
71 u8 *buf, unsigned int *len,
72 unsigned int eid)
73{
74 return avc_stream_get_format(unit, dir, pid, buf, len, eid);
75}
76
77/*
78 * AV/C Digital Interface Command Set General Specification 4.2
79 * (Sep 2004, 1394TA)
80 */
81int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
82 enum avc_general_plug_dir dir,
83 unsigned short pid);
84
52int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw); 85int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw);
53int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw); 86int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw);
54void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw); 87void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw);
generated by cgit v1.2.2 (git 2.25.0) at 2025-05-31 19:52:27 -0400