332 lines
7.6 KiB
C
332 lines
7.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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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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#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)
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;
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else if (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
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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)
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;
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else if (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)
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;
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else if (err < 11)
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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_count(struct fw_unit *unit, u8 addr[AVC_BRIDGECO_ADDR_BYTES],
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unsigned int *ch_count)
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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, 0x02);
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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)
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;
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else if (err < 11)
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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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*ch_count = 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)
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;
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else if (err < 11)
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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)
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;
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else if (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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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)
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;
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else if (err < 16)
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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)
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;
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else if (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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