forked from Minki/linux
1fc9522a08
This commit is for some devices which have its own operations or quirks. Many functionality should be implemented in user land. Then this commit adds functionality related to stream such as sampling frequency or clock source. For help to debug, this commit adds the functionality to get metering information if it's available. To help these functionalities, this commit adds some AV/C commands defined in 'AV/C Audio Subunit Specification (1394TA). Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
283 lines
6.8 KiB
C
283 lines
6.8 KiB
C
/*
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* bebob_command.c - driver for BeBoB based devices
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*
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* Copyright (c) 2013-2014 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include "./bebob.h"
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int avc_audio_set_selector(struct fw_unit *unit, unsigned int subunit_id,
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unsigned int fb_id, unsigned int num)
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{
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u8 *buf;
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int err;
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buf = kzalloc(12, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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buf[0] = 0x00; /* AV/C CONTROL */
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buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */
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buf[2] = 0xb8; /* FUNCTION BLOCK */
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buf[3] = 0x80; /* type is 'selector'*/
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buf[4] = 0xff & fb_id; /* function block id */
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buf[5] = 0x10; /* control attribute is CURRENT */
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buf[6] = 0x02; /* selector length is 2 */
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buf[7] = 0xff & num; /* input function block plug number */
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buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */
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err = fcp_avc_transaction(unit, buf, 12, buf, 12,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(7) | BIT(8));
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if (err > 0 && err < 9)
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (err > 0)
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err = 0;
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kfree(buf);
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return err;
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}
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int avc_audio_get_selector(struct fw_unit *unit, unsigned int subunit_id,
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unsigned int fb_id, unsigned int *num)
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{
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u8 *buf;
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int err;
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buf = kzalloc(12, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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buf[0] = 0x01; /* AV/C STATUS */
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buf[1] = 0x08 | (0x07 & subunit_id); /* AUDIO SUBUNIT ID */
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buf[2] = 0xb8; /* FUNCTION BLOCK */
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buf[3] = 0x80; /* type is 'selector'*/
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buf[4] = 0xff & fb_id; /* function block id */
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buf[5] = 0x10; /* control attribute is CURRENT */
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buf[6] = 0x02; /* selector length is 2 */
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buf[7] = 0xff; /* input function block plug number */
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buf[8] = 0x01; /* control selector is SELECTOR_CONTROL */
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err = fcp_avc_transaction(unit, buf, 12, buf, 12,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(8));
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if (err > 0 && err < 9)
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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if (err < 0)
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goto end;
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*num = buf[7];
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err = 0;
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end:
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kfree(buf);
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return err;
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}
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static inline void
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avc_bridgeco_fill_extension_addr(u8 *buf, u8 *addr)
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{
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buf[1] = addr[0];
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memcpy(buf + 4, addr + 1, 5);
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}
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static inline void
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avc_bridgeco_fill_plug_info_extension_command(u8 *buf, u8 *addr,
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unsigned int itype)
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{
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buf[0] = 0x01; /* AV/C STATUS */
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buf[2] = 0x02; /* AV/C GENERAL PLUG INFO */
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buf[3] = 0xc0; /* BridgeCo extension */
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avc_bridgeco_fill_extension_addr(buf, addr);
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buf[9] = itype; /* info type */
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}
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int avc_bridgeco_get_plug_type(struct fw_unit *unit,
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u8 addr[AVC_BRIDGECO_ADDR_BYTES],
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enum avc_bridgeco_plug_type *type)
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{
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u8 *buf;
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int err;
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buf = kzalloc(12, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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/* Info type is 'plug type'. */
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avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x00);
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err = fcp_avc_transaction(unit, buf, 12, buf, 12,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(7) | BIT(9));
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if ((err >= 0) && (err < 8))
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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if (err < 0)
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goto end;
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*type = buf[10];
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err = 0;
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end:
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kfree(buf);
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return err;
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}
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int avc_bridgeco_get_plug_ch_pos(struct fw_unit *unit,
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u8 addr[AVC_BRIDGECO_ADDR_BYTES],
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u8 *buf, unsigned int len)
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{
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int err;
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/* Info type is 'channel position'. */
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avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x03);
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err = fcp_avc_transaction(unit, buf, 12, buf, 256,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) |
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BIT(5) | BIT(6) | BIT(7) | BIT(9));
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if ((err >= 0) && (err < 8))
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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if (err < 0)
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goto end;
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/* Pick up specific data. */
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memmove(buf, buf + 10, err - 10);
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err = 0;
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end:
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return err;
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}
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int avc_bridgeco_get_plug_section_type(struct fw_unit *unit,
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u8 addr[AVC_BRIDGECO_ADDR_BYTES],
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unsigned int id, u8 *type)
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{
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u8 *buf;
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int err;
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/* section info includes charactors but this module don't need it */
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buf = kzalloc(12, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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/* Info type is 'section info'. */
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avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x07);
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buf[10] = 0xff & ++id; /* section id */
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err = fcp_avc_transaction(unit, buf, 12, buf, 12,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(7) | BIT(9) | BIT(10));
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if ((err >= 0) && (err < 8))
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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if (err < 0)
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goto end;
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*type = buf[11];
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err = 0;
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end:
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kfree(buf);
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return err;
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}
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int avc_bridgeco_get_plug_input(struct fw_unit *unit,
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u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 input[7])
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{
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int err;
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u8 *buf;
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buf = kzalloc(18, GFP_KERNEL);
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if (buf == NULL)
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return -ENOMEM;
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/* Info type is 'plug input'. */
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avc_bridgeco_fill_plug_info_extension_command(buf, addr, 0x05);
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err = fcp_avc_transaction(unit, buf, 16, buf, 16,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(7));
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if ((err >= 0) && (err < 8))
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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if (err < 0)
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goto end;
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memcpy(input, buf + 10, 5);
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err = 0;
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end:
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kfree(buf);
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return err;
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}
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int avc_bridgeco_get_plug_strm_fmt(struct fw_unit *unit,
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u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 *buf,
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unsigned int *len, unsigned int eid)
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{
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int err;
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/* check given buffer */
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if ((buf == NULL) || (*len < 12)) {
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err = -EINVAL;
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goto end;
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}
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buf[0] = 0x01; /* AV/C STATUS */
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buf[2] = 0x2f; /* AV/C STREAM FORMAT SUPPORT */
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buf[3] = 0xc1; /* Bridgeco extension - List Request */
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avc_bridgeco_fill_extension_addr(buf, addr);
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buf[10] = 0xff & eid; /* Entry ID */
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err = fcp_avc_transaction(unit, buf, 12, buf, *len,
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BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) |
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BIT(6) | BIT(7) | BIT(10));
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if ((err >= 0) && (err < 12))
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err = -EIO;
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else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
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err = -ENOSYS;
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else if (buf[0] == 0x0a) /* REJECTED */
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err = -EINVAL;
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else if (buf[0] == 0x0b) /* IN TRANSITION */
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err = -EAGAIN;
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else if (buf[10] != eid)
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err = -EIO;
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if (err < 0)
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goto end;
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/* Pick up 'stream format info'. */
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memmove(buf, buf + 11, err - 11);
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*len = err - 11;
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err = 0;
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end:
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return err;
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}
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