C++ snd_printdd函数代码示例

static int snd_opl4_detect(struct snd_opl4 *opl4)
{
	u8 id1, id2;

	snd_opl4_enable_opl4(opl4);

	id1 = snd_opl4_read(opl4, OPL4_REG_MEMORY_CONFIGURATION);
	snd_printdd("OPL4[02]=%02x\n", id1);
	switch (id1 & OPL4_DEVICE_ID_MASK) {
	case 0x20:
		opl4->hardware = OPL3_HW_OPL4;
		break;
	case 0x40:
		opl4->hardware = OPL3_HW_OPL4_ML;
		break;
	default:
		return -ENODEV;
	}

	snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_FM, 0x00);
	snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_PCM, 0xff);
	id1 = snd_opl4_read(opl4, OPL4_REG_MIX_CONTROL_FM);
	id2 = snd_opl4_read(opl4, OPL4_REG_MIX_CONTROL_PCM);
	snd_printdd("OPL4 id1=%02x id2=%02x\n", id1, id2);
       	if (id1 != 0x00 || id2 != 0xff)
		return -ENODEV;

	snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_FM, 0x3f);
	snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_PCM, 0x3f);
	snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, 0x00);
	return 0;
}

static void apply_fixup(struct hda_codec *codec, int id, int action, int depth)
{
#ifdef CONFIG_SND_DEBUG_VERBOSE
	const char *modelname = codec->fixup_name;
#endif

	while (id >= 0) {
		const struct hda_fixup *fix = codec->fixup_list + id;

		if (fix->chained_before)
			apply_fixup(codec, fix->chain_id, action, depth + 1);

		switch (fix->type) {
		case HDA_FIXUP_PINS:
			if (action != HDA_FIXUP_ACT_PRE_PROBE || !fix->v.pins)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply pincfg for %s\n",
				    codec->chip_name, modelname);
			snd_hda_apply_pincfgs(codec, fix->v.pins);
			break;
		case HDA_FIXUP_VERBS:
			if (action != HDA_FIXUP_ACT_PROBE || !fix->v.verbs)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply fix-verbs for %s\n",
				    codec->chip_name, modelname);
			snd_hda_add_verbs(codec, fix->v.verbs);
			break;
		case HDA_FIXUP_FUNC:
			if (!fix->v.func)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply fix-func for %s\n",
				    codec->chip_name, modelname);
			fix->v.func(codec, fix, action);
			break;
		case HDA_FIXUP_PINCTLS:
			if (action != HDA_FIXUP_ACT_PROBE || !fix->v.pins)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply pinctl for %s\n",
				    codec->chip_name, modelname);
			set_pin_targets(codec, fix->v.pins);
			break;
		default:
			snd_printk(KERN_ERR SFX
				   "%s: Invalid fixup type %d\n",
				   codec->chip_name, fix->type);
			break;
		}
		if (!fix->chained || fix->chained_before)
			break;
		if (++depth > 10)
			break;
		id = fix->chain_id;
	}
}

static int lx_pcm_open(struct snd_pcm_substream *substream)
{
	struct lx6464es *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	int err = 0;
	int board_rate;

	snd_printdd("->lx_pcm_open\n");
	mutex_lock(&chip->setup_mutex);

	/* copy the struct snd_pcm_hardware struct */
	runtime->hw = lx_caps;

#if 0
	/* buffer-size should better be multiple of period-size */
	err = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);
	if (err < 0) {
		snd_printk(KERN_WARNING LXP "could not constrain periods\n");
		goto exit;
	}
#endif

	/* the clock rate cannot be changed */
	board_rate = chip->board_sample_rate;
	err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE,
					   board_rate, board_rate);

	if (err < 0) {
		snd_printk(KERN_WARNING LXP "could not constrain periods\n");
		goto exit;
	}

	/* constrain period size */
	err = snd_pcm_hw_constraint_minmax(runtime,
					   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
					   MICROBLAZE_IBL_MIN,
					   MICROBLAZE_IBL_MAX);
	if (err < 0) {
		snd_printk(KERN_WARNING LXP
			   "could not constrain period size\n");
		goto exit;
	}

	snd_pcm_hw_constraint_step(runtime, 0,
				   SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32);

	snd_pcm_set_sync(substream);
	err = 0;

exit:
	runtime->private_data = chip;

	mutex_unlock(&chip->setup_mutex);
	snd_printdd("<-lx_pcm_open, %d\n", err);
	return err;
}

static int vxp_suspend(struct pcmcia_device *link)
{
	struct vx_core *chip = link->priv;

	snd_printdd(KERN_DEBUG "SUSPEND\n");
	if (chip) {
		snd_printdd(KERN_DEBUG "snd_vx_suspend calling\n");
		snd_vx_suspend(chip);
	}

	return 0;
}

void snd_hda_apply_fixup(struct hda_codec *codec, int action)
{
	struct hda_gen_spec *spec = codec->spec;
	int id = spec->fixup_id;
#ifdef CONFIG_SND_DEBUG_VERBOSE
	const char *modelname = spec->fixup_name;
#endif
	int depth = 0;

	if (!spec->fixup_list)
		return;

	while (id >= 0) {
		const struct hda_fixup *fix = spec->fixup_list + id;

		switch (fix->type) {
		case HDA_FIXUP_PINS:
			if (action != HDA_FIXUP_ACT_PRE_PROBE || !fix->v.pins)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply pincfg for %s\n",
				    codec->chip_name, modelname);
			snd_hda_apply_pincfgs(codec, fix->v.pins);
			break;
		case HDA_FIXUP_VERBS:
			if (action != HDA_FIXUP_ACT_PROBE || !fix->v.verbs)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply fix-verbs for %s\n",
				    codec->chip_name, modelname);
			snd_hda_gen_add_verbs(codec->spec, fix->v.verbs);
			break;
		case HDA_FIXUP_FUNC:
			if (!fix->v.func)
				break;
			snd_printdd(KERN_INFO SFX
				    "%s: Apply fix-func for %s\n",
				    codec->chip_name, modelname);
			fix->v.func(codec, fix, action);
			break;
		default:
			snd_printk(KERN_ERR SFX
				   "%s: Invalid fixup type %d\n",
				   codec->chip_name, fix->type);
			break;
		}
		if (!fix->chained)
			break;
		if (++depth > 10)
			break;
		id = fix->chain_id;
	}
}

static int pdacf_suspend(struct pcmcia_device *link)
{
	struct snd_pdacf *chip = link->priv;

	snd_printdd(KERN_DEBUG "SUSPEND\n");
	if (chip) {
		snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
		snd_pdacf_suspend(chip, PMSG_SUSPEND);
	}

	return 0;
}

/*
 * event callback
 */
static int vxpocket_event(event_t event, int priority, event_callback_args_t *args)
{
	dev_link_t *link = args->client_data;
	vx_core_t *chip = link->priv;

	switch (event) {
	case CS_EVENT_CARD_REMOVAL:
		snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
		link->state &= ~DEV_PRESENT;
		if (link->state & DEV_CONFIG)
			chip->chip_status |= VX_STAT_IS_STALE;
		break;
	case CS_EVENT_CARD_INSERTION:
		snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
		vxpocket_config(link);
		break;
#ifdef CONFIG_PM
	case CS_EVENT_PM_SUSPEND:
		snd_printdd(KERN_DEBUG "SUSPEND\n");
		link->state |= DEV_SUSPEND;
		if (chip && chip->card->pm_suspend) {
			snd_printdd(KERN_DEBUG "snd_vx_suspend calling\n");
			chip->card->pm_suspend(chip->card, PMSG_SUSPEND);
		}
		/* Fall through... */
	case CS_EVENT_RESET_PHYSICAL:
		snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
		if (link->state & DEV_CONFIG)
			pcmcia_release_configuration(link->handle);
		break;
	case CS_EVENT_PM_RESUME:
		snd_printdd(KERN_DEBUG "RESUME\n");
		link->state &= ~DEV_SUSPEND;
		/* Fall through... */
	case CS_EVENT_CARD_RESET:
		snd_printdd(KERN_DEBUG "CARD_RESET\n");
		if (DEV_OK(link)) {
			//struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
			snd_printdd(KERN_DEBUG "requestconfig...\n");
			pcmcia_request_configuration(link->handle, &link->conf);
			if (chip && chip->card->pm_resume) {
				snd_printdd(KERN_DEBUG "calling snd_vx_resume\n");
				chip->card->pm_resume(chip->card);
			}
		}
		snd_printdd(KERN_DEBUG "resume done!\n");
		break;
#endif
	}
	return 0;
}

static int __init snd_gusextreme_detect(int dev,
					struct snd_card *card,
					struct snd_gus_card * gus,
					struct snd_es1688 *es1688)
{
	unsigned long flags;
	unsigned char d;

	/*
	 * This is main stuff - enable access to GF1 chip...
	 * I'm not sure, if this will work for card which have
	 * ES1688 chip in another place than 0x220.
         *
         * I used reverse-engineering in DOSEMU. [--jk]
	 *
	 * ULTRINIT.EXE:
	 * 0x230 = 0,2,3
	 * 0x240 = 2,0,1
	 * 0x250 = 2,0,3
	 * 0x260 = 2,2,1
	 */

	spin_lock_irqsave(&es1688->mixer_lock, flags);
	snd_es1688_mixer_write(es1688, 0x40, 0x0b);	/* don't change!!! */
	spin_unlock_irqrestore(&es1688->mixer_lock, flags);
	spin_lock_irqsave(&es1688->reg_lock, flags);
	outb(gf1_port[dev] & 0x040 ? 2 : 0, ES1688P(es1688, INIT1));
	outb(0, 0x201);
	outb(gf1_port[dev] & 0x020 ? 2 : 0, ES1688P(es1688, INIT1));
	outb(0, 0x201);
	outb(gf1_port[dev] & 0x010 ? 3 : 1, ES1688P(es1688, INIT1));
	spin_unlock_irqrestore(&es1688->reg_lock, flags);

	udelay(100);

	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);	/* reset GF1 */
	if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
		snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
		return -EIO;
	}
	udelay(160);
	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);	/* release reset */
	udelay(160);
	if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
		snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
		return -EIO;
	}
	return 0;
}

static int pdacf_resume(struct pcmcia_device *link)
{
	struct snd_pdacf *chip = link->priv;

	snd_printdd(KERN_DEBUG "RESUME\n");
	if (pcmcia_dev_present(link)) {
		if (chip) {
			snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
			snd_pdacf_resume(chip);
		}
	}
	snd_printdd(KERN_DEBUG "resume done!\n");

	return 0;
}

int snd_msnd_disable_irq(struct snd_msnd *dev)
{
	unsigned long flags;

	if (--dev->irq_ref > 0)
		return 0;

	if (dev->irq_ref < 0)
		snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
			   dev->irq_ref);

	snd_printdd(LOGNAME ": Disabling IRQ\n");

	spin_lock_irqsave(&dev->lock, flags);
	if (snd_msnd_wait_TXDE(dev) == 0) {
		outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
		if (dev->type == msndClassic)
			outb(HPIRQ_NONE, dev->io + HP_IRQM);
		disable_irq(dev->irq);
		spin_unlock_irqrestore(&dev->lock, flags);
		return 0;
	}
	spin_unlock_irqrestore(&dev->lock, flags);

	snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");

	return -EIO;
}

int snd_msnd_enable_irq(struct snd_msnd *dev)
{
	unsigned long flags;

	if (dev->irq_ref++)
		return 0;

	snd_printdd(LOGNAME ": Enabling IRQ\n");

	spin_lock_irqsave(&dev->lock, flags);
	if (snd_msnd_wait_TXDE(dev) == 0) {
		outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
		if (dev->type == msndClassic)
			outb(dev->irqid, dev->io + HP_IRQM);

		outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
		outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
		enable_irq(dev->irq);
		snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
				    dev->dspq_buff_size);
		spin_unlock_irqrestore(&dev->lock, flags);
		return 0;
	}
	spin_unlock_irqrestore(&dev->lock, flags);

	snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");

	return -EIO;
}

static int pcxhr_iec958_update_byte(struct snd_pcxhr *chip,
				    int aes_idx, unsigned char aes_bits)
{
	int i, err, cmd;
	unsigned char new_bits = aes_bits;
	unsigned char old_bits = chip->aes_bits[aes_idx];
	struct pcxhr_rmh rmh;

	for (i = 0; i < 8; i++) {
		if ((old_bits & 0x01) != (new_bits & 0x01)) {
			cmd = chip->chip_idx & 0x03;      
			if (chip->chip_idx > 3)
				
				cmd |= 1 << 22;
			cmd |= ((aes_idx << 3) + i) << 2; 
			cmd |= (new_bits & 0x01) << 23;   
			pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
			rmh.cmd[0] |= IO_NUM_REG_CUER;
			rmh.cmd[1] = cmd;
			rmh.cmd_len = 2;
			snd_printdd("write iec958 AES %d byte %d bit %d (cmd %x)\n",
				    chip->chip_idx, aes_idx, i, cmd);
			err = pcxhr_send_msg(chip->mgr, &rmh);
			if (err)
				return err;
		}
		old_bits >>= 1;
		new_bits >>= 1;
	}
	chip->aes_bits[aes_idx] = aes_bits;
	return 0;
}

/*
 *  allocate a playback/capture pipe (pcmp0/pcmc0)
 */
static int pcxhr_dsp_allocate_pipe( struct pcxhr_mgr *mgr, struct pcxhr_pipe *pipe,
				    int is_capture, int pin)
{
	int stream_count, audio_count;
	int err;
	struct pcxhr_rmh rmh;

	if (is_capture) {
		stream_count = 1;
		if (mgr->mono_capture)
			audio_count = 1;
		else
			audio_count = 2;
	} else {
		stream_count = PCXHR_PLAYBACK_STREAMS;
		audio_count = 2;	/* always stereo */
	}
	snd_printdd("snd_add_ref_pipe pin(%d) pcm%c0\n", pin, is_capture ? 'c' : 'p');
	pipe->is_capture = is_capture;
	pipe->first_audio = pin;
	/* define pipe (P_PCM_ONLY_MASK (0x020000) is not necessary) */
	pcxhr_init_rmh(&rmh, CMD_RES_PIPE);
	pcxhr_set_pipe_cmd_params(&rmh, is_capture, pin, audio_count, stream_count); 
	err = pcxhr_send_msg(mgr, &rmh);
	if (err < 0) {
		snd_printk(KERN_ERR "error pipe allocation (CMD_RES_PIPE) err=%x!\n", err );
		return err;
	}
	pipe->status = PCXHR_PIPE_DEFINED;

	return 0;
}

/**
 * snd_pdacf_assign_resources - initialize the hardware and card instance.
 * @port: i/o port for the card
 * @irq: irq number for the card
 *
 * this function assigns the specified port and irq, boot the card,
 * create pcm and control instances, and initialize the rest hardware.
 *
 * returns 0 if successful, or a negative error code.
 */
static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
{
	int err;
	struct snd_card *card = pdacf->card;

	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
	pdacf->port = port;
	pdacf->irq = irq;
	pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;

	err = snd_pdacf_ak4117_create(pdacf);
	if (err < 0)
		return err;	

	strcpy(card->driver, "PDAudio-CF");
	sprintf(card->shortname, "Core Sound %s", card->driver);
	sprintf(card->longname, "%s at 0x%x, irq %i",
		card->shortname, port, irq);

	err = snd_pdacf_pcm_new(pdacf);
	if (err < 0)
		return err;

	if ((err = snd_card_register(card)) < 0)
		return err;

	return 0;
}

static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
{
	unsigned long offset;
	struct page * page;
	void *vaddr;

	snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
		   area->vm_start,
		   address - area->vm_start,
		   (address - area->vm_start) >> PAGE_SHIFT,
		   address);
	
	offset = area->vm_pgoff << PAGE_SHIFT;
	offset += address - area->vm_start;
	snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
	vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->us428ctls_sharedmem + offset;
	page = virt_to_page(vaddr);
	get_page(page);
	snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);

	if (type)
		*type = VM_FAULT_MINOR;

	return page;
}