/* * Driver for Digigram VX soundcards * * Hardware core part * * Copyright (c) 2002 by Takashi Iwai * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include "vx_cmd.h" MODULE_AUTHOR("Takashi Iwai "); MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); MODULE_LICENSE("GPL"); /* * snd_vx_delay - delay for the specified time * @xmsec: the time to delay in msec */ void snd_vx_delay(vx_core_t *chip, int xmsec) { if (! in_interrupt() && xmsec >= 1000 / HZ) msleep(xmsec); else mdelay(xmsec); } /* * vx_check_reg_bit - wait for the specified bit is set/reset on a register * @reg: register to check * @mask: bit mask * @bit: resultant bit to be checked * @time: time-out of loop in msec * * returns zero if a bit matches, or a negative error code. */ int snd_vx_check_reg_bit(vx_core_t *chip, int reg, int mask, int bit, int time) { unsigned long end_time = jiffies + (time * HZ + 999) / 1000; #ifdef CONFIG_SND_DEBUG static char *reg_names[VX_REG_MAX] = { "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL", "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ", "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2", "MIC3", "INTCSR", "CNTRL", "GPIOC", "LOFREQ", "HIFREQ", "CSUER", "RUER" }; #endif do { if ((snd_vx_inb(chip, reg) & mask) == bit) return 0; //snd_vx_delay(chip, 10); } while (time_after_eq(end_time, jiffies)); snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg)); return -EIO; } /* * vx_send_irq_dsp - set command irq bit * @num: the requested IRQ type, IRQ_XXX * * this triggers the specified IRQ request * returns 0 if successful, or a negative error code. * */ static int vx_send_irq_dsp(vx_core_t *chip, int num) { int nirq; /* wait for Hc = 0 */ if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) return -EIO; nirq = num; if (vx_has_new_dsp(chip)) nirq += VXP_IRQ_OFFSET; vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); return 0; } /* * vx_reset_chk - reset CHK bit on ISR * * returns 0 if successful, or a negative error code. */ static int vx_reset_chk(vx_core_t *chip) { /* Reset irq CHK */ if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) return -EIO; /* Wait until CHK = 0 */ if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) return -EIO; return 0; } /* * vx_transfer_end - terminate message transfer * @cmd: IRQ message to send (IRQ_MESS_XXX_END) * * returns 0 if successful, or a negative error code. * the error code can be VX-specific, retrieved via vx_get_error(). * NB: call with spinlock held! */ static int vx_transfer_end(vx_core_t *chip, int cmd) { int err; if ((err = vx_reset_chk(chip)) < 0) return err; /* irq MESS_READ/WRITE_END */ if ((err = vx_send_irq_dsp(chip, cmd)) < 0) return err; /* Wait CHK = 1 */ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) return err; /* If error, Read RX */ if ((err = vx_inb(chip, ISR)) & ISR_ERR) { if ((err = vx_wait_for_rx_full(chip)) < 0) { snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); return err; } err = vx_inb(chip, RXH) << 16; err |= vx_inb(chip, RXM) << 8; err |= vx_inb(chip, RXL); snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); return -(VX_ERR_MASK | err); } return 0; } /* * vx_read_status - return the status rmh * @rmh: rmh record to store the status * * returns 0 if successful, or a negative error code. * the error code can be VX-specific, retrieved via vx_get_error(). * NB: call with spinlock held! */ static int vx_read_status(vx_core_t *chip, struct vx_rmh *rmh) { int i, err, val, size; /* no read necessary? */ if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) return 0; /* Wait for RX full (with timeout protection) * The first word of status is in RX */ err = vx_wait_for_rx_full(chip); if (err < 0) return err; /* Read RX */ val = vx_inb(chip, RXH) << 16; val |= vx_inb(chip, RXM) << 8; val |= vx_inb(chip, RXL); /* If status given by DSP, let's decode its size */ switch (rmh->DspStat) { case RMH_SSIZE_ARG: size = val & 0xff; rmh->Stat[0] = val & 0xffff00; rmh->LgStat = size + 1; break; case RMH_SSIZE_MASK: /* Let's count the arg numbers from a mask */ rmh->Stat[0] = val; size = 0; while (val) { if (val & 0x01) size++; val >>= 1; } rmh->LgStat = size + 1; break; default: /* else retrieve the status length given by the driver */ size = rmh->LgStat; rmh->Stat[0] = val; /* Val is the status 1st word */ size--; /* hence adjust remaining length */ break; } if (size < 1) return 0; snd_assert(size <= SIZE_MAX_STATUS, return -EINVAL); for (i = 1; i <= size; i++) { /* trigger an irq MESS_WRITE_NEXT */ err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); if (err < 0) return err; /* Wait for RX full (with timeout protection) */ err = vx_wait_for_rx_full(chip); if (err < 0) return err; rmh->Stat[i] = vx_inb(chip, RXH) << 16; rmh->Stat[i] |= vx_inb(chip, RXM) << 8; rmh->Stat[i] |= vx_inb(chip, RXL); } return vx_transfer_end(chip, IRQ_MESS_WRITE_END); } #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 #define MASK_1_WORD_COMMAND 0x00ff7fff /* * vx_send_msg_nolock - send a DSP message and read back the status * @rmh: the rmh record to send and receive * * returns 0 if successful, or a negative error code. * the error code can be VX-specific, retrieved via vx_get_error(). * * this function doesn't call spinlock at all. */ int vx_send_msg_nolock(vx_core_t *chip, struct vx_rmh *rmh) { int i, err; if (chip->chip_status & VX_STAT_IS_STALE) return -EBUSY; if ((err = vx_reset_chk(chip)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); return err; } #if 0 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); if (rmh->LgCmd > 1) { printk(KERN_DEBUG " "); for (i = 1; i < rmh->LgCmd; i++) printk("0x%06x ", rmh->Cmd[i]); printk("\n"); } #endif /* Check bit M is set according to length of the command */ if (rmh->LgCmd > 1) rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; else rmh->Cmd[0] &= MASK_1_WORD_COMMAND; /* Wait for TX empty */ if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n"); return err; } /* Write Cmd[0] */ vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); /* Trigger irq MESSAGE */ if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); return err; } /* Wait for CHK = 1 */ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) return err; /* If error, get error value from RX */ if (vx_inb(chip, ISR) & ISR_ERR) { if ((err = vx_wait_for_rx_full(chip)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); return err; } err = vx_inb(chip, RXH) << 16; err |= vx_inb(chip, RXM) << 8; err |= vx_inb(chip, RXL); snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); err = -(VX_ERR_MASK | err); return err; } /* Send the other words */ if (rmh->LgCmd > 1) { for (i = 1; i < rmh->LgCmd; i++) { /* Wait for TX ready */ if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); return err; } /* Write Cmd[i] */ vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); /* Trigger irq MESS_READ_NEXT */ if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n"); return err; } } /* Wait for TX empty */ if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n"); return err; } /* End of transfer */ err = vx_transfer_end(chip, IRQ_MESS_READ_END); if (err < 0) return err; } return vx_read_status(chip, rmh); } /* * vx_send_msg - send a DSP message with spinlock * @rmh: the rmh record to send and receive * * returns 0 if successful, or a negative error code. * see vx_send_msg_nolock(). */ int vx_send_msg(vx_core_t *chip, struct vx_rmh *rmh) { unsigned long flags; int err; spin_lock_irqsave(&chip->lock, flags); err = vx_send_msg_nolock(chip, rmh); spin_unlock_irqrestore(&chip->lock, flags); return err; } /* * vx_send_rih_nolock - send an RIH to xilinx * @cmd: the command to send * * returns 0 if successful, or a negative error code. * the error code can be VX-specific, retrieved via vx_get_error(). * * this function doesn't call spinlock at all. * * unlike RMH, no command is sent to DSP. */ int vx_send_rih_nolock(vx_core_t *chip, int cmd) { int err; if (chip->chip_status & VX_STAT_IS_STALE) return -EBUSY; #if 0 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd); #endif if ((err = vx_reset_chk(chip)) < 0) return err; /* send the IRQ */ if ((err = vx_send_irq_dsp(chip, cmd)) < 0) return err; /* Wait CHK = 1 */ if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) return err; /* If error, read RX */ if (vx_inb(chip, ISR) & ISR_ERR) { if ((err = vx_wait_for_rx_full(chip)) < 0) return err; err = vx_inb(chip, RXH) << 16; err |= vx_inb(chip, RXM) << 8; err |= vx_inb(chip, RXL); return -(VX_ERR_MASK | err); } return 0; } /* * vx_send_rih - send an RIH with spinlock * @cmd: the command to send * * see vx_send_rih_nolock(). */ int vx_send_rih(vx_core_t *chip, int cmd) { unsigned long flags; int err; spin_lock_irqsave(&chip->lock, flags); err = vx_send_rih_nolock(chip, cmd); spin_unlock_irqrestore(&chip->lock, flags); return err; } #define END_OF_RESET_WAIT_TIME 500 /* us */ /** * snd_vx_boot_xilinx - boot up the xilinx interface * @boot: the boot record to load */ int snd_vx_load_boot_image(vx_core_t *chip, const struct firmware *boot) { unsigned int i; int no_fillup = vx_has_new_dsp(chip); /* check the length of boot image */ snd_assert(boot->size > 0, return -EINVAL); snd_assert(boot->size % 3 == 0, return -EINVAL); #if 0 { /* more strict check */ unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; snd_assert(boot->size == (c + 2) * 3, return -EINVAL); } #endif /* reset dsp */ vx_reset_dsp(chip); udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ /* download boot strap */ for (i = 0; i < 0x600; i += 3) { if (i >= boot->size) { if (no_fillup) break; if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { snd_printk(KERN_ERR "dsp boot failed at %d\n", i); return -EIO; } vx_outb(chip, TXH, 0); vx_outb(chip, TXM, 0); vx_outb(chip, TXL, 0); } else { unsigned char *image = boot->data + i; if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { snd_printk(KERN_ERR "dsp boot failed at %d\n", i); return -EIO; } vx_outb(chip, TXH, image[0]); vx_outb(chip, TXM, image[1]); vx_outb(chip, TXL, image[2]); } } return 0; } /* * vx_test_irq_src - query the source of interrupts * * called from irq handler only */ static int vx_test_irq_src(vx_core_t *chip, unsigned int *ret) { int err; vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); spin_lock(&chip->lock); err = vx_send_msg_nolock(chip, &chip->irq_rmh); if (err < 0) *ret = 0; else *ret = chip->irq_rmh.Stat[0]; spin_unlock(&chip->lock); return err; } /* * vx_interrupt - soft irq handler */ static void vx_interrupt(unsigned long private_data) { vx_core_t *chip = (vx_core_t *) private_data; unsigned int events; if (chip->chip_status & VX_STAT_IS_STALE) return; if (vx_test_irq_src(chip, &events) < 0) return; #if 0 if (events & 0x000800) printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); #endif // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); /* We must prevent any application using this DSP * and block any further request until the application * either unregisters or reloads the DSP */ if (events & FATAL_DSP_ERROR) { snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); return; } /* The start on time code conditions are filled (ie the time code * received by the board is equal to one of those given to it). */ if (events & TIME_CODE_EVENT_PENDING) ; /* so far, nothing to do yet */ /* The frequency has changed on the board (UER mode). */ if (events & FREQUENCY_CHANGE_EVENT_PENDING) vx_change_frequency(chip); /* update the pcm streams */ vx_pcm_update_intr(chip, events); } /** * snd_vx_irq_handler - interrupt handler */ irqreturn_t snd_vx_irq_handler(int irq, void *dev, struct pt_regs *regs) { vx_core_t *chip = dev; if (! (chip->chip_status & VX_STAT_CHIP_INIT) || (chip->chip_status & VX_STAT_IS_STALE)) return IRQ_NONE; if (! vx_test_and_ack(chip)) tasklet_hi_schedule(&chip->tq); return IRQ_HANDLED; } /* */ static void vx_reset_board(vx_core_t *chip, int cold_reset) { snd_assert(chip->ops->reset_board, return); /* current source, later sync'ed with target */ chip->audio_source = VX_AUDIO_SRC_LINE; if (cold_reset) { chip->audio_source_target = chip->audio_source; chip->clock_source = INTERNAL_QUARTZ; chip->clock_mode = VX_CLOCK_MODE_AUTO; chip->freq = 48000; chip->uer_detected = VX_UER_MODE_NOT_PRESENT; chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; } chip->ops->reset_board(chip, cold_reset); vx_reset_codec(chip, cold_reset); vx_set_internal_clock(chip, chip->freq); /* Reset the DSP */ vx_reset_dsp(chip); if (vx_is_pcmcia(chip)) { /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ vx_test_and_ack(chip); vx_validate_irq(chip, 1); } /* init CBits */ vx_set_iec958_status(chip, chip->uer_bits); } /* * proc interface */ static void vx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) { vx_core_t *chip = entry->private_data; static char *audio_src_vxp[] = { "Line", "Mic", "Digital" }; static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" }; static char *clock_mode[] = { "Auto", "Internal", "External" }; static char *clock_src[] = { "Internal", "External" }; static char *uer_type[] = { "Consumer", "Professional", "Not Present" }; snd_iprintf(buffer, "%s\n", chip->card->longname); snd_iprintf(buffer, "Xilinx Firmware: %s\n", chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No"); snd_iprintf(buffer, "Device Initialized: %s\n", chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No"); snd_iprintf(buffer, "DSP audio info:"); if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) snd_iprintf(buffer, " realtime"); if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) snd_iprintf(buffer, " offline"); if (chip->audio_info & VX_AUDIO_INFO_MPEG1) snd_iprintf(buffer, " mpeg1"); if (chip->audio_info & VX_AUDIO_INFO_MPEG2) snd_iprintf(buffer, " mpeg2"); if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) snd_iprintf(buffer, " linear8"); if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) snd_iprintf(buffer, " linear16"); if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) snd_iprintf(buffer, " linear24"); snd_iprintf(buffer, "\n"); snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? audio_src_vxp[chip->audio_source] : audio_src_vx2[chip->audio_source]); snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); snd_iprintf(buffer, "Frequency: %d\n", chip->freq); snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, chip->ibl.granularity); } static void vx_proc_init(vx_core_t *chip) { snd_info_entry_t *entry; if (! snd_card_proc_new(chip->card, "vx-status", &entry)) snd_info_set_text_ops(entry, chip, 1024, vx_proc_read); } /** * snd_vx_dsp_boot - load the DSP boot */ int snd_vx_dsp_boot(vx_core_t *chip, const struct firmware *boot) { int err; int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); vx_reset_board(chip, cold_reset); vx_validate_irq(chip, 0); if ((err = snd_vx_load_boot_image(chip, boot)) < 0) return err; snd_vx_delay(chip, 10); return 0; } /** * snd_vx_dsp_load - load the DSP image */ int snd_vx_dsp_load(vx_core_t *chip, const struct firmware *dsp) { unsigned int i; int err; unsigned int csum = 0; unsigned char *image, *cptr; snd_assert(dsp->size % 3 == 0, return -EINVAL); vx_toggle_dac_mute(chip, 1); /* Transfert data buffer from PC to DSP */ for (i = 0; i < dsp->size; i += 3) { image = dsp->data + i; /* Wait DSP ready for a new read */ if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { printk("dsp loading error at position %d\n", i); return err; } cptr = image; csum ^= *cptr; csum = (csum >> 24) | (csum << 8); vx_outb(chip, TXH, *cptr++); csum ^= *cptr; csum = (csum >> 24) | (csum << 8); vx_outb(chip, TXM, *cptr++); csum ^= *cptr; csum = (csum >> 24) | (csum << 8); vx_outb(chip, TXL, *cptr++); } snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); snd_vx_delay(chip, 200); if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) return err; vx_toggle_dac_mute(chip, 0); vx_test_and_ack(chip); vx_validate_irq(chip, 1); return 0; } #ifdef CONFIG_PM /* * suspend */ static int snd_vx_suspend(snd_card_t *card, pm_message_t state) { vx_core_t *chip = card->pm_private_data; unsigned int i; snd_assert(chip, return -EINVAL); chip->chip_status |= VX_STAT_IN_SUSPEND; for (i = 0; i < chip->hw->num_codecs; i++) snd_pcm_suspend_all(chip->pcm[i]); return 0; } /* * resume */ static int snd_vx_resume(snd_card_t *card) { vx_core_t *chip = card->pm_private_data; int i, err; snd_assert(chip, return -EINVAL); chip->chip_status &= ~VX_STAT_CHIP_INIT; for (i = 0; i < 4; i++) { if (! chip->firmware[i]) continue; err = chip->ops->load_dsp(chip, i, chip->firmware[i]); if (err < 0) { snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); return -EIO; } } chip->chip_status |= VX_STAT_CHIP_INIT; chip->chip_status &= ~VX_STAT_IN_SUSPEND; return 0; } #endif /** * snd_vx_create - constructor for vx_core_t * @hw: hardware specific record * * this function allocates the instance and prepare for the hardware * initialization. * * return the instance pointer if successful, NULL in error. */ vx_core_t *snd_vx_create(snd_card_t *card, struct snd_vx_hardware *hw, struct snd_vx_ops *ops, int extra_size) { vx_core_t *chip; snd_assert(card && hw && ops, return NULL); chip = kcalloc(1, sizeof(*chip) + extra_size, GFP_KERNEL); if (! chip) { snd_printk(KERN_ERR "vx_core: no memory\n"); return NULL; } spin_lock_init(&chip->lock); spin_lock_init(&chip->irq_lock); chip->irq = -1; chip->hw = hw; chip->type = hw->type; chip->ops = ops; tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip); init_MUTEX(&chip->mixer_mutex); chip->card = card; card->private_data = chip; strcpy(card->driver, hw->name); sprintf(card->shortname, "Digigram %s", hw->name); snd_card_set_pm_callback(card, snd_vx_suspend, snd_vx_resume, chip); vx_proc_init(chip); return chip; } /* * module entries */ static int __init alsa_vx_core_init(void) { return 0; } static void __exit alsa_vx_core_exit(void) { } module_init(alsa_vx_core_init) module_exit(alsa_vx_core_exit) /* * exports */ EXPORT_SYMBOL(snd_vx_check_reg_bit); EXPORT_SYMBOL(snd_vx_create); EXPORT_SYMBOL(snd_vx_setup_firmware); EXPORT_SYMBOL(snd_vx_free_firmware); EXPORT_SYMBOL(snd_vx_irq_handler); EXPORT_SYMBOL(snd_vx_delay); EXPORT_SYMBOL(snd_vx_dsp_boot); EXPORT_SYMBOL(snd_vx_dsp_load); EXPORT_SYMBOL(snd_vx_load_boot_image);