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android_kernel_xiaomi_sm8350/sound/pci/mixart/mixart_hwdep.c
David Howells fd4f80de46 Fix a const pointer usage warning in the Digigram miXart soundcard driver 
Fix a const pointer usage warning in the Digigram miXart soundcard driver.  A
const pointer is being passed to copy_from_user() to load the firmware into.
This is okay in this case because the function has allocated the firmware
struct itself, but the const qualifier is part of the firmware struct - so the
patch casts the const away.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-10 14:29:01 +01:00

651 lines
19 KiB
C
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/*
* Driver for Digigram miXart soundcards
*
* DSP firmware management
*
* Copyright (c) 2003 by Digigram <alsa@digigram.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
#include <asm/io.h>
#include <sound/core.h>
#include "mixart.h"
#include "mixart_mixer.h"
#include "mixart_core.h"
#include "mixart_hwdep.h"
/**
* wait for a value on a peudo register, exit with a timeout
*
* @param mgr pointer to miXart manager structure
* @param offset unsigned pseudo_register base + offset of value
* @param value value
* @param timeout timeout in centisenconds
*/
static int mixart_wait_nice_for_register_value(struct mixart_mgr *mgr,
u32 offset, int is_egal,
u32 value, unsigned long timeout)
{
unsigned long end_time = jiffies + (timeout * HZ / 100);
u32 read;
do { /* we may take too long time in this loop.
* so give controls back to kernel if needed.
*/
cond_resched();
read = readl_be( MIXART_MEM( mgr, offset ));
if(is_egal) {
if(read == value) return 0;
}
else { /* wait for different value */
if(read != value) return 0;
}
} while ( time_after_eq(end_time, jiffies) );
return -EBUSY;
}
/*
structures needed to upload elf code packets
*/
struct snd_mixart_elf32_ehdr {
u8 e_ident[16];
u16 e_type;
u16 e_machine;
u32 e_version;
u32 e_entry;
u32 e_phoff;
u32 e_shoff;
u32 e_flags;
u16 e_ehsize;
u16 e_phentsize;
u16 e_phnum;
u16 e_shentsize;
u16 e_shnum;
u16 e_shstrndx;
};
struct snd_mixart_elf32_phdr {
u32 p_type;
u32 p_offset;
u32 p_vaddr;
u32 p_paddr;
u32 p_filesz;
u32 p_memsz;
u32 p_flags;
u32 p_align;
};
static int mixart_load_elf(struct mixart_mgr *mgr, const struct firmware *dsp )
{
char elf32_magic_number[4] = {0x7f,'E','L','F'};
struct snd_mixart_elf32_ehdr *elf_header;
int i;
elf_header = (struct snd_mixart_elf32_ehdr *)dsp->data;
for( i=0; i<4; i++ )
if ( elf32_magic_number[i] != elf_header->e_ident[i] )
return -EINVAL;
if( elf_header->e_phoff != 0 ) {
struct snd_mixart_elf32_phdr elf_programheader;
for( i=0; i < be16_to_cpu(elf_header->e_phnum); i++ ) {
u32 pos = be32_to_cpu(elf_header->e_phoff) + (u32)(i * be16_to_cpu(elf_header->e_phentsize));
memcpy( &elf_programheader, dsp->data + pos, sizeof(elf_programheader) );
if(elf_programheader.p_type != 0) {
if( elf_programheader.p_filesz != 0 ) {
memcpy_toio( MIXART_MEM( mgr, be32_to_cpu(elf_programheader.p_vaddr)),
dsp->data + be32_to_cpu( elf_programheader.p_offset ),
be32_to_cpu( elf_programheader.p_filesz ));
}
}
}
}
return 0;
}
/*
* get basic information and init miXart
*/
/* audio IDs for request to the board */
#define MIXART_FIRST_ANA_AUDIO_ID 0
#define MIXART_FIRST_DIG_AUDIO_ID 8
static int mixart_enum_connectors(struct mixart_mgr *mgr)
{
u32 k;
int err;
struct mixart_msg request;
struct mixart_enum_connector_resp *connector;
struct mixart_audio_info_req *audio_info_req;
struct mixart_audio_info_resp *audio_info;
connector = kmalloc(sizeof(*connector), GFP_KERNEL);
audio_info_req = kmalloc(sizeof(*audio_info_req), GFP_KERNEL);
audio_info = kmalloc(sizeof(*audio_info), GFP_KERNEL);
if (! connector || ! audio_info_req || ! audio_info) {
err = -ENOMEM;
goto __error;
}
audio_info_req->line_max_level = MIXART_FLOAT_P_22_0_TO_HEX;
audio_info_req->micro_max_level = MIXART_FLOAT_M_20_0_TO_HEX;
audio_info_req->cd_max_level = MIXART_FLOAT____0_0_TO_HEX;
request.message_id = MSG_SYSTEM_ENUM_PLAY_CONNECTOR;
request.uid = (struct mixart_uid){0,0}; /* board num = 0 */
request.data = NULL;
request.size = 0;
err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PLAY_CONNECTOR\n");
err = -EINVAL;
goto __error;
}
for(k=0; k < connector->uid_count; k++) {
struct mixart_pipe *pipe;
if(k < MIXART_FIRST_DIG_AUDIO_ID) {
pipe = &mgr->chip[k/2]->pipe_out_ana;
} else {
pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_out_dig;
}
if(k & 1) {
pipe->uid_right_connector = connector->uid[k]; /* odd */
} else {
pipe->uid_left_connector = connector->uid[k]; /* even */
}
/* snd_printk(KERN_DEBUG "playback connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
/* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
request.uid = connector->uid[k];
request.data = audio_info_req;
request.size = sizeof(*audio_info_req);
err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
if( err < 0 ) {
snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
goto __error;
}
/*snd_printk(KERN_DEBUG "play analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
}
request.message_id = MSG_SYSTEM_ENUM_RECORD_CONNECTOR;
request.uid = (struct mixart_uid){0,0}; /* board num = 0 */
request.data = NULL;
request.size = 0;
err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_RECORD_CONNECTOR\n");
err = -EINVAL;
goto __error;
}
for(k=0; k < connector->uid_count; k++) {
struct mixart_pipe *pipe;
if(k < MIXART_FIRST_DIG_AUDIO_ID) {
pipe = &mgr->chip[k/2]->pipe_in_ana;
} else {
pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_in_dig;
}
if(k & 1) {
pipe->uid_right_connector = connector->uid[k]; /* odd */
} else {
pipe->uid_left_connector = connector->uid[k]; /* even */
}
/* snd_printk(KERN_DEBUG "capture connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
/* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
request.uid = connector->uid[k];
request.data = audio_info_req;
request.size = sizeof(*audio_info_req);
err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
if( err < 0 ) {
snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
goto __error;
}
/*snd_printk(KERN_DEBUG "rec analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
}
err = 0;
__error:
kfree(connector);
kfree(audio_info_req);
kfree(audio_info);
return err;
}
static int mixart_enum_physio(struct mixart_mgr *mgr)
{
u32 k;
int err;
struct mixart_msg request;
struct mixart_uid get_console_mgr;
struct mixart_return_uid console_mgr;
struct mixart_uid_enumeration phys_io;
/* get the uid for the console manager */
get_console_mgr.object_id = 0;
get_console_mgr.desc = MSG_CONSOLE_MANAGER | 0; /* cardindex = 0 */
request.message_id = MSG_CONSOLE_GET_CLOCK_UID;
request.uid = get_console_mgr;
request.data = &get_console_mgr;
request.size = sizeof(get_console_mgr);
err = snd_mixart_send_msg(mgr, &request, sizeof(console_mgr), &console_mgr);
if( (err < 0) || (console_mgr.error_code != 0) ) {
snd_printk(KERN_DEBUG "error MSG_CONSOLE_GET_CLOCK_UID : err=%x\n", console_mgr.error_code);
return -EINVAL;
}
/* used later for clock issues ! */
mgr->uid_console_manager = console_mgr.uid;
request.message_id = MSG_SYSTEM_ENUM_PHYSICAL_IO;
request.uid = (struct mixart_uid){0,0};
request.data = &console_mgr.uid;
request.size = sizeof(console_mgr.uid);
err = snd_mixart_send_msg(mgr, &request, sizeof(phys_io), &phys_io);
if( (err < 0) || ( phys_io.error_code != 0 ) ) {
snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PHYSICAL_IO err(%x) error_code(%x)\n", err, phys_io.error_code );
return -EINVAL;
}
snd_assert(phys_io.nb_uid >= (MIXART_MAX_CARDS * 2), return -EINVAL); /* min 2 phys io per card (analog in + analog out) */
for(k=0; k<mgr->num_cards; k++) {
mgr->chip[k]->uid_in_analog_physio = phys_io.uid[k];
mgr->chip[k]->uid_out_analog_physio = phys_io.uid[phys_io.nb_uid/2 + k];
}
return 0;
}
static int mixart_first_init(struct mixart_mgr *mgr)
{
u32 k;
int err;
struct mixart_msg request;
if((err = mixart_enum_connectors(mgr)) < 0) return err;
if((err = mixart_enum_physio(mgr)) < 0) return err;
/* send a synchro command to card (necessary to do this before first MSG_STREAM_START_STREAM_GRP_PACKET) */
/* though why not here */
request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
request.uid = (struct mixart_uid){0,0};
request.data = NULL;
request.size = 0;
/* this command has no data. response is a 32 bit status */
err = snd_mixart_send_msg(mgr, &request, sizeof(k), &k);
if( (err < 0) || (k != 0) ) {
snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD\n");
return err == 0 ? -EINVAL : err;
}
return 0;
}
/* firmware base addresses (when hard coded) */
#define MIXART_MOTHERBOARD_XLX_BASE_ADDRESS 0x00600000
static int mixart_dsp_load(struct mixart_mgr* mgr, int index, const struct firmware *dsp)
{
int err, card_index;
u32 status_xilinx, status_elf, status_daught;
u32 val;
/* read motherboard xilinx status */
status_xilinx = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
/* read elf status */
status_elf = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
/* read daughterboard xilinx status */
status_daught = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
/* motherboard xilinx status 5 will say that the board is performing a reset */
if( status_xilinx == 5 ) {
snd_printk( KERN_ERR "miXart is resetting !\n");
return -EAGAIN; /* try again later */
}
switch (index) {
case MIXART_MOTHERBOARD_XLX_INDEX:
/* xilinx already loaded ? */
if( status_xilinx == 4 ) {
snd_printk( KERN_DEBUG "xilinx is already loaded !\n");
return 0;
}
/* the status should be 0 == "idle" */
if( status_xilinx != 0 ) {
snd_printk( KERN_ERR "xilinx load error ! status = %d\n", status_xilinx);
return -EIO; /* modprob -r may help ? */
}
/* check xilinx validity */
snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
snd_assert(dsp->size % 4 == 0, return -EINVAL);
/* set xilinx status to copying */
writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
/* setup xilinx base address */
writel_be( MIXART_MOTHERBOARD_XLX_BASE_ADDRESS, MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_BASE_ADDR_OFFSET ));
/* setup code size for xilinx file */
writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_SIZE_OFFSET ));
/* copy xilinx code */
memcpy_toio( MIXART_MEM( mgr, MIXART_MOTHERBOARD_XLX_BASE_ADDRESS), dsp->data, dsp->size);
/* set xilinx status to copy finished */
writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
/* return, because no further processing needed */
return 0;
case MIXART_MOTHERBOARD_ELF_INDEX:
if( status_elf == 4 ) {
snd_printk( KERN_DEBUG "elf file already loaded !\n");
return 0;
}
/* the status should be 0 == "idle" */
if( status_elf != 0 ) {
snd_printk( KERN_ERR "elf load error ! status = %d\n", status_elf);
return -EIO; /* modprob -r may help ? */
}
/* wait for xilinx status == 4 */
err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET, 1, 4, 500); /* 5sec */
if (err < 0) {
snd_printk( KERN_ERR "xilinx was not loaded or could not be started\n");
return err;
}
/* init some data on the card */
writel_be( 0, MIXART_MEM( mgr, MIXART_PSEUDOREG_BOARDNUMBER ) ); /* set miXart boardnumber to 0 */
writel_be( 0, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* reset pointer to flow table on miXart */
/* set elf status to copying */
writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
/* process the copying of the elf packets */
err = mixart_load_elf( mgr, dsp );
if (err < 0) return err;
/* set elf status to copy finished */
writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
/* wait for elf status == 4 */
err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET, 1, 4, 300); /* 3sec */
if (err < 0) {
snd_printk( KERN_ERR "elf could not be started\n");
return err;
}
/* miXart waits at this point on the pointer to the flow table */
writel_be( (u32)mgr->flowinfo.addr, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* give pointer of flow table to miXart */
return 0; /* return, another xilinx file has to be loaded before */
case MIXART_AESEBUBOARD_XLX_INDEX:
default:
/* elf and xilinx should be loaded */
if( (status_elf != 4) || (status_xilinx != 4) ) {
printk( KERN_ERR "xilinx or elf not successfully loaded\n");
return -EIO; /* modprob -r may help ? */
}
/* wait for daughter detection != 0 */
err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DBRD_PRESENCE_OFFSET, 0, 0, 30); /* 300msec */
if (err < 0) {
snd_printk( KERN_ERR "error starting elf file\n");
return err;
}
/* the board type can now be retrieved */
mgr->board_type = (DAUGHTER_TYPE_MASK & readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DBRD_TYPE_OFFSET)));
if (mgr->board_type == MIXART_DAUGHTER_TYPE_NONE)
break; /* no daughter board; the file does not have to be loaded, continue after the switch */
/* only if aesebu daughter board presence (elf code must run) */
if (mgr->board_type != MIXART_DAUGHTER_TYPE_AES )
return -EINVAL;
/* daughter should be idle */
if( status_daught != 0 ) {
printk( KERN_ERR "daughter load error ! status = %d\n", status_daught);
return -EIO; /* modprob -r may help ? */
}
/* check daughterboard xilinx validity */
snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
snd_assert(dsp->size % 4 == 0, return -EINVAL);
/* inform mixart about the size of the file */
writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_SIZE_OFFSET ));
/* set daughterboard status to 1 */
writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
/* wait for status == 2 */
err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 2, 30); /* 300msec */
if (err < 0) {
snd_printk( KERN_ERR "daughter board load error\n");
return err;
}
/* get the address where to write the file */
val = readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_BASE_ADDR_OFFSET ));
snd_assert(val != 0, return -EINVAL);
/* copy daughterboard xilinx code */
memcpy_toio( MIXART_MEM( mgr, val), dsp->data, dsp->size);
/* set daughterboard status to 4 */
writel_be( 4, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
/* continue with init */
break;
} /* end of switch file index*/
/* wait for daughter status == 3 */
err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 3, 300); /* 3sec */
if (err < 0) {
snd_printk( KERN_ERR "daughter board could not be initialised\n");
return err;
}
/* init mailbox (communication with embedded) */
snd_mixart_init_mailbox(mgr);
/* first communication with embedded */
err = mixart_first_init(mgr);
if (err < 0) {
snd_printk( KERN_ERR "miXart could not be set up\n");
return err;
}
/* create devices and mixer in accordance with HW options*/
for (card_index = 0; card_index < mgr->num_cards; card_index++) {
struct snd_mixart *chip = mgr->chip[card_index];
if ((err = snd_mixart_create_pcm(chip)) < 0)
return err;
if (card_index == 0) {
if ((err = snd_mixart_create_mixer(chip->mgr)) < 0)
return err;
}
if ((err = snd_card_register(chip->card)) < 0)
return err;
};
snd_printdd("miXart firmware downloaded and successfully set up\n");
return 0;
}
#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
#if !defined(CONFIG_USE_MIXARTLOADER) && !defined(CONFIG_SND_MIXART) /* built-in kernel */
#define SND_MIXART_FW_LOADER /* use the standard firmware loader */
#endif
#endif
#ifdef SND_MIXART_FW_LOADER
int snd_mixart_setup_firmware(struct mixart_mgr *mgr)
{
static char *fw_files[3] = {
"miXart8.xlx", "miXart8.elf", "miXart8AES.xlx"
};
char path[32];
const struct firmware *fw_entry;
int i, err;
for (i = 0; i < 3; i++) {
sprintf(path, "mixart/%s", fw_files[i]);
if (request_firmware(&fw_entry, path, &mgr->pci->dev)) {
snd_printk(KERN_ERR "miXart: can't load firmware %s\n", path);
return -ENOENT;
}
/* fake hwdep dsp record */
err = mixart_dsp_load(mgr, i, fw_entry);
release_firmware(fw_entry);
if (err < 0)
return err;
mgr->dsp_loaded |= 1 << i;
}
return 0;
}
MODULE_FIRMWARE("mixart/miXart8.xlx");
MODULE_FIRMWARE("mixart/miXart8.elf");
MODULE_FIRMWARE("mixart/miXart8AES.xlx");
#else /* old style firmware loading */
/* miXart hwdep interface id string */
#define SND_MIXART_HWDEP_ID "miXart Loader"
static int mixart_hwdep_open(struct snd_hwdep *hw, struct file *file)
{
return 0;
}
static int mixart_hwdep_release(struct snd_hwdep *hw, struct file *file)
{
return 0;
}
static int mixart_hwdep_dsp_status(struct snd_hwdep *hw,
struct snd_hwdep_dsp_status *info)
{
struct mixart_mgr *mgr = hw->private_data;
strcpy(info->id, "miXart");
info->num_dsps = MIXART_HARDW_FILES_MAX_INDEX;
if (mgr->dsp_loaded & (1 << MIXART_MOTHERBOARD_ELF_INDEX))
info->chip_ready = 1;
info->version = MIXART_DRIVER_VERSION;
return 0;
}
static int mixart_hwdep_dsp_load(struct snd_hwdep *hw,
struct snd_hwdep_dsp_image *dsp)
{
struct mixart_mgr* mgr = hw->private_data;
struct firmware fw;
int err;
fw.size = dsp->length;
fw.data = vmalloc(dsp->length);
if (! fw.data) {
snd_printk(KERN_ERR "miXart: cannot allocate image size %d\n",
(int)dsp->length);
return -ENOMEM;
}
if (copy_from_user((void *) fw.data, dsp->image, dsp->length)) {
vfree(fw.data);
return -EFAULT;
}
err = mixart_dsp_load(mgr, dsp->index, &fw);
vfree(fw.data);
if (err < 0)
return err;
mgr->dsp_loaded |= 1 << dsp->index;
return err;
}
int snd_mixart_setup_firmware(struct mixart_mgr *mgr)
{
int err;
struct snd_hwdep *hw;
/* only create hwdep interface for first cardX (see "index" module parameter)*/
if ((err = snd_hwdep_new(mgr->chip[0]->card, SND_MIXART_HWDEP_ID, 0, &hw)) < 0)
return err;
hw->iface = SNDRV_HWDEP_IFACE_MIXART;
hw->private_data = mgr;
hw->ops.open = mixart_hwdep_open;
hw->ops.release = mixart_hwdep_release;
hw->ops.dsp_status = mixart_hwdep_dsp_status;
hw->ops.dsp_load = mixart_hwdep_dsp_load;
hw->exclusive = 1;
sprintf(hw->name, SND_MIXART_HWDEP_ID);
mgr->dsp_loaded = 0;
return snd_card_register(mgr->chip[0]->card);
}
#endif /* SND_MIXART_FW_LOADER */
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