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ALSA: bebob: Add commands and connections/streams management
This commit adds management functionality for connections and streams. BeBoB uses CMP to manage connections and uses AMDTP for streams. This commit also adds some BridgeCo's AV/C extension commands. There are some BridgeCo's AV/C extension commands but this commit just uses below commands to get device's capability and status: 1.Extended Plug Info commands - Plug Channel Position Specific Data - Plug Type Specific Data - Cluster(Section) Info Specific Data - Plug Input Specific Data 2.Extended Stream Format Information commands - Extended Stream Format Information Command - List Request For Extended Plug Info commands for Cluster Info Specific Data, I pick up 'section' instead of 'cluster' from document to prevent from misunderstanding because 'cluster' is also used in IEC 61883-6. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Takashi Sakamoto
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Takashi Iwai
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May 26, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| snd-bebob-objs := bebob.o | ||
| snd-bebob-objs := bebob_command.o bebob_stream.o bebob.o | ||
| obj-m += snd-bebob.o |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,205 @@ | ||
| /* | ||
| * bebob_command.c - driver for BeBoB based devices | ||
| * | ||
| * Copyright (c) 2013-2014 Takashi Sakamoto | ||
| * | ||
| * Licensed under the terms of the GNU General Public License, version 2. | ||
| */ | ||
|
|
||
| #include "./bebob.h" | ||
|
|
||
| static inline void | ||
| avc_bridgeco_fill_extension_addr(u8 *buf, u8 *addr) | ||
| { | ||
| buf[1] = addr[0]; | ||
| memcpy(buf + 4, addr + 1, 5); | ||
| } | ||
|
|
||
| static inline void | ||
| avc_bridgeco_fill_plug_info_extension_command(u8 *buf, u8 *addr, | ||
| unsigned int itype) | ||
| { | ||
| buf[0] = 0x01; /* AV/C STATUS */ | ||
| buf[2] = 0x02; /* AV/C GENERAL PLUG INFO */ | ||
| buf[3] = 0xc0; /* BridgeCo extension */ | ||
| avc_bridgeco_fill_extension_addr(buf, addr); | ||
| buf[9] = itype; /* info type */ | ||
| } | ||
|
|
||
| int avc_bridgeco_get_plug_type(struct fw_unit *unit, | ||
| u8 addr[AVC_BRIDGECO_ADDR_BYTES], | ||
| enum avc_bridgeco_plug_type *type) | ||
| { | ||
| u8 *buf; | ||
| int err; | ||
|
|
||
| buf = kzalloc(12, GFP_KERNEL); | ||
| if (buf == NULL) | ||
| return -ENOMEM; | ||
|
|
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| /* Info type is 'plug type'. */ | ||
| avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x00); | ||
|
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| err = fcp_avc_transaction(unit, buf, 12, buf, 12, | ||
| BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | | ||
| BIT(6) | BIT(7) | BIT(9)); | ||
| if ((err >= 0) && (err < 8)) | ||
| err = -EIO; | ||
| else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ | ||
| err = -ENOSYS; | ||
| else if (buf[0] == 0x0a) /* REJECTED */ | ||
| err = -EINVAL; | ||
| else if (buf[0] == 0x0b) /* IN TRANSITION */ | ||
| err = -EAGAIN; | ||
| if (err < 0) | ||
| goto end; | ||
|
|
||
| *type = buf[10]; | ||
| err = 0; | ||
| end: | ||
| kfree(buf); | ||
| return err; | ||
| } | ||
|
|
||
| int avc_bridgeco_get_plug_ch_pos(struct fw_unit *unit, | ||
| u8 addr[AVC_BRIDGECO_ADDR_BYTES], | ||
| u8 *buf, unsigned int len) | ||
| { | ||
| int err; | ||
|
|
||
| /* Info type is 'channel position'. */ | ||
| avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x03); | ||
|
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| err = fcp_avc_transaction(unit, buf, 12, buf, 256, | ||
| BIT(1) | BIT(2) | BIT(3) | BIT(4) | | ||
| BIT(5) | BIT(6) | BIT(7) | BIT(9)); | ||
| if ((err >= 0) && (err < 8)) | ||
| err = -EIO; | ||
| else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ | ||
| err = -ENOSYS; | ||
| else if (buf[0] == 0x0a) /* REJECTED */ | ||
| err = -EINVAL; | ||
| else if (buf[0] == 0x0b) /* IN TRANSITION */ | ||
| err = -EAGAIN; | ||
| if (err < 0) | ||
| goto end; | ||
|
|
||
| /* Pick up specific data. */ | ||
| memmove(buf, buf + 10, err - 10); | ||
| err = 0; | ||
| end: | ||
| return err; | ||
| } | ||
|
|
||
| int avc_bridgeco_get_plug_section_type(struct fw_unit *unit, | ||
| u8 addr[AVC_BRIDGECO_ADDR_BYTES], | ||
| unsigned int id, u8 *type) | ||
| { | ||
| u8 *buf; | ||
| int err; | ||
|
|
||
| /* section info includes charactors but this module don't need it */ | ||
| buf = kzalloc(12, GFP_KERNEL); | ||
| if (buf == NULL) | ||
| return -ENOMEM; | ||
|
|
||
| /* Info type is 'section info'. */ | ||
| avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x07); | ||
| buf[10] = 0xff & ++id; /* section id */ | ||
|
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| err = fcp_avc_transaction(unit, buf, 12, buf, 12, | ||
| BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | | ||
| BIT(6) | BIT(7) | BIT(9) | BIT(10)); | ||
| if ((err >= 0) && (err < 8)) | ||
| err = -EIO; | ||
| else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ | ||
| err = -ENOSYS; | ||
| else if (buf[0] == 0x0a) /* REJECTED */ | ||
| err = -EINVAL; | ||
| else if (buf[0] == 0x0b) /* IN TRANSITION */ | ||
| err = -EAGAIN; | ||
| if (err < 0) | ||
| goto end; | ||
|
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| *type = buf[11]; | ||
| err = 0; | ||
| end: | ||
| kfree(buf); | ||
| return err; | ||
| } | ||
|
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| int avc_bridgeco_get_plug_input(struct fw_unit *unit, | ||
| u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 input[7]) | ||
| { | ||
| int err; | ||
| u8 *buf; | ||
|
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| buf = kzalloc(18, GFP_KERNEL); | ||
| if (buf == NULL) | ||
| return -ENOMEM; | ||
|
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| /* Info type is 'plug input'. */ | ||
| avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x05); | ||
|
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| err = fcp_avc_transaction(unit, buf, 16, buf, 16, | ||
| BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | | ||
| BIT(6) | BIT(7)); | ||
| if ((err >= 0) && (err < 8)) | ||
| err = -EIO; | ||
| else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ | ||
| err = -ENOSYS; | ||
| else if (buf[0] == 0x0a) /* REJECTED */ | ||
| err = -EINVAL; | ||
| else if (buf[0] == 0x0b) /* IN TRANSITION */ | ||
| err = -EAGAIN; | ||
| if (err < 0) | ||
| goto end; | ||
|
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||
| memcpy(input, buf + 10, 5); | ||
| err = 0; | ||
| end: | ||
| kfree(buf); | ||
| return err; | ||
| } | ||
|
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| int avc_bridgeco_get_plug_strm_fmt(struct fw_unit *unit, | ||
| u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 *buf, | ||
| unsigned int *len, unsigned int eid) | ||
| { | ||
| int err; | ||
|
|
||
| /* check given buffer */ | ||
| if ((buf == NULL) || (*len < 12)) { | ||
| err = -EINVAL; | ||
| goto end; | ||
| } | ||
|
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| buf[0] = 0x01; /* AV/C STATUS */ | ||
| buf[2] = 0x2f; /* AV/C STREAM FORMAT SUPPORT */ | ||
| buf[3] = 0xc1; /* Bridgeco extension - List Request */ | ||
| avc_bridgeco_fill_extension_addr(buf, addr); | ||
| buf[10] = 0xff & eid; /* Entry ID */ | ||
|
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| err = fcp_avc_transaction(unit, buf, 12, buf, *len, | ||
| BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | | ||
| BIT(6) | BIT(7) | BIT(10)); | ||
| if ((err >= 0) && (err < 12)) | ||
| err = -EIO; | ||
| else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ | ||
| err = -ENOSYS; | ||
| else if (buf[0] == 0x0a) /* REJECTED */ | ||
| err = -EINVAL; | ||
| else if (buf[0] == 0x0b) /* IN TRANSITION */ | ||
| err = -EAGAIN; | ||
| else if (buf[10] != eid) | ||
| err = -EIO; | ||
| if (err < 0) | ||
| goto end; | ||
|
|
||
| /* Pick up 'stream format info'. */ | ||
| memmove(buf, buf + 11, err - 11); | ||
| *len = err - 11; | ||
| err = 0; | ||
| end: | ||
| return err; | ||
| } |
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