diff options
Diffstat (limited to 'sound/firewire/bebob/bebob_command.c')
| -rw-r--r-- | sound/firewire/bebob/bebob_command.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/sound/firewire/bebob/bebob_command.c b/sound/firewire/bebob/bebob_command.c new file mode 100644 index 000000000000..9402cc15dbc1 --- /dev/null +++ b/sound/firewire/bebob/bebob_command.c @@ -0,0 +1,282 @@ +/* + * 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" + +int avc_audio_set_selector(struct fw_unit *unit, unsigned int subunit_id, + unsigned int fb_id, unsigned int num) +{ + u8 *buf; + int err; + + buf = kzalloc(12, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + buf[0] = 0x00; /* AV/C CONTROL */ + buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */ + buf[2] = 0xb8; /* FUNCTION BLOCK */ + buf[3] = 0x80; /* type is 'selector'*/ + buf[4] = 0xff & fb_id; /* function block id */ + buf[5] = 0x10; /* control attribute is CURRENT */ + buf[6] = 0x02; /* selector length is 2 */ + buf[7] = 0xff & num; /* input function block plug number */ + buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */ + + err = fcp_avc_transaction(unit, buf, 12, buf, 12, + BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | + BIT(6) | BIT(7) | BIT(8)); + if (err > 0 && err < 9) + err = -EIO; + else if (buf[0] == 0x08) /* NOT IMPLEMENTED */ + err = -ENOSYS; + else if (buf[0] == 0x0a) /* REJECTED */ + err = -EINVAL; + else if (err > 0) + err = 0; + + kfree(buf); + return err; +} + +int avc_audio_get_selector(struct fw_unit *unit, unsigned int subunit_id, + unsigned int fb_id, unsigned int *num) +{ + u8 *buf; + int err; + + buf = kzalloc(12, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + buf[0] = 0x01; /* AV/C STATUS */ + buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */ + buf[2] = 0xb8; /* FUNCTION BLOCK */ + buf[3] = 0x80; /* type is 'selector'*/ + buf[4] = 0xff & fb_id; /* function block id */ + buf[5] = 0x10; /* control attribute is CURRENT */ + buf[6] = 0x02; /* selector length is 2 */ + buf[7] = 0xff; /* input function block plug number */ + buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */ + + err = fcp_avc_transaction(unit, buf, 12, buf, 12, + BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | + BIT(6) | BIT(8)); + if (err > 0 && err < 9) + 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; + + *num = buf[7]; + err = 0; +end: + kfree(buf); + return err; +} + +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; + + /* Info type is 'plug type'. */ + avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x00); + + 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); + + 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 */ + + 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; + + *type = buf[11]; + err = 0; +end: + kfree(buf); + return err; +} + +int avc_bridgeco_get_plug_input(struct fw_unit *unit, + u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 input[7]) +{ + int err; + u8 *buf; + + buf = kzalloc(18, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + /* Info type is 'plug input'. */ + avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x05); + + 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; + + memcpy(input, buf + 10, 5); + err = 0; +end: + kfree(buf); + return err; +} + +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; + } + + 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 */ + + 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; +} |