waveartist.c

iis s3c2410-uda1341语音系统的 开发

	} else if (recmask & SOUND_MASK_MIC) {
		recmask = SOUND_MASK_MIC;
		recdev = ADC_MUX_MIC;
	}

	*dev_l = *dev_r = recdev;

	return recmask;
}

static int
waveartist_decode_mixer(wavnc_info *devc, int dev, unsigned char lev_l,
			unsigned char lev_r)
{
	switch (dev) {
	case SOUND_MIXER_VOLUME:
	case SOUND_MIXER_SYNTH:
	case SOUND_MIXER_PCM:
	case SOUND_MIXER_LINE:
	case SOUND_MIXER_MIC:
	case SOUND_MIXER_IGAIN:
	case SOUND_MIXER_LINE1:
	case SOUND_MIXER_LINE2:
		devc->levels[dev] = lev_l | lev_r << 8;
		break;

	case SOUND_MIXER_IMIX:
		break;

	default:
		dev = -EINVAL;
		break;
	}

	return dev;
}

static int waveartist_get_mixer(wavnc_info *devc, int dev)
{
	return devc->levels[dev];
}

static const struct waveartist_mixer_info waveartist_mixer = {
	supported_devs:	SUPPORTED_MIXER_DEVICES | SOUND_MASK_IGAIN,
	recording_devs:	SOUND_MASK_LINE  | SOUND_MASK_MIC   |
			SOUND_MASK_LINE1 | SOUND_MASK_LINE2 |
			SOUND_MASK_IMIX,
	stereo_devs:	(SUPPORTED_MIXER_DEVICES | SOUND_MASK_IGAIN) & ~
			(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX),
	select_input:	waveartist_select_input,
	decode_mixer:	waveartist_decode_mixer,
	get_mixer:	waveartist_get_mixer,
};

static void
waveartist_set_recmask(wavnc_info *devc, unsigned int recmask)
{
	unsigned char dev_l, dev_r;

	recmask &= devc->mix->recording_devs;

	/*
	 * If more than one recording device selected,
	 * disable the device that is currently in use.
	 */
	if (hweight32(recmask) > 1)
		recmask &= ~devc->recmask;

	/*
	 * Translate the recording device mask into
	 * the ADC multiplexer settings.
	 */
	devc->recmask = devc->mix->select_input(devc, recmask,
						&dev_l, &dev_r);

	waveartist_set_adc_mux(devc, dev_l, dev_r);
}

static int
waveartist_set_mixer(wavnc_info *devc, int dev, unsigned int level)
{
	unsigned int lev_left  = level & 0x00ff;
	unsigned int lev_right = (level & 0xff00) >> 8;

	if (lev_left > 100)
		lev_left = 100;
	if (lev_right > 100)
		lev_right = 100;

	/*
	 * Mono devices have their right volume forced to their
	 * left volume.  (from ALSA driver OSS emulation).
	 */
	if (!(devc->mix->stereo_devs & (1 << dev)))
		lev_right = lev_left;

	dev = devc->mix->decode_mixer(devc, dev, lev_left, lev_right);

	if (dev >= 0)
		waveartist_mixer_update(devc, dev);

	return dev < 0 ? dev : 0;
}

static int
waveartist_mixer_ioctl(int dev, unsigned int cmd, caddr_t arg)
{
	wavnc_info *devc = (wavnc_info *)audio_devs[dev]->devc;
	int ret = 0, val, nr;

	/*
	 * All SOUND_MIXER_* ioctls use type 'M'
	 */
	if (((cmd >> 8) & 255) != 'M')
		return -ENOIOCTLCMD;

#ifdef CONFIG_ARCH_NETWINDER
	if (machine_is_netwinder()) {
		ret = vnc_private_ioctl(dev, cmd, arg);
		if (ret != -ENOIOCTLCMD)
			return ret;
		else
			ret = 0;
	}
#endif

	nr = cmd & 0xff;

	if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
		if (get_user(val, (int *)arg))
			return -EFAULT;

		switch (nr) {
		case SOUND_MIXER_RECSRC:
			waveartist_set_recmask(devc, val);
			break;

		default:
			ret = -EINVAL;
			if (nr < SOUND_MIXER_NRDEVICES &&
			    devc->mix->supported_devs & (1 << nr))
				ret = waveartist_set_mixer(devc, nr, val);
		}
	}

	if (ret == 0 && _SIOC_DIR(cmd) & _SIOC_READ) {
		ret = -EINVAL;

		switch (nr) {
		case SOUND_MIXER_RECSRC:
			ret = devc->recmask;
			break;

		case SOUND_MIXER_DEVMASK:
			ret = devc->mix->supported_devs;
			break;

		case SOUND_MIXER_STEREODEVS:
			ret = devc->mix->stereo_devs;
			break;

		case SOUND_MIXER_RECMASK:
			ret = devc->mix->recording_devs;
			break;

		case SOUND_MIXER_CAPS:
			ret = SOUND_CAP_EXCL_INPUT;
			break;

		default:
			if (nr < SOUND_MIXER_NRDEVICES)
				ret = devc->mix->get_mixer(devc, nr);
			break;
		}

		if (ret >= 0)
			ret = put_user(ret, (int *)arg) ? -EFAULT : 0;
	}

	return ret;
}

static struct mixer_operations waveartist_mixer_operations =
{
	owner:	THIS_MODULE,
	id:	"WaveArtist",
	name:	"WaveArtist",
	ioctl:	waveartist_mixer_ioctl
};

static void
waveartist_mixer_reset(wavnc_info *devc)
{
	int i;

	if (debug_flg & DEBUG_MIXER)
		printk("%s: mixer_reset\n", devc->hw.name);

	/*
	 * reset mixer cmd
	 */
	waveartist_cmd1(devc, WACMD_RST_MIXER);

	/*
	 * set input for ADC to come from 'quiet'
	 * turn on default modes
	 */
	waveartist_cmd3(devc, WACMD_SET_MIXER, 0x9800, 0xa836);

	/*
	 * set mixer input select to none, RX filter gains 0 dB
	 */
	waveartist_cmd3(devc, WACMD_SET_MIXER, 0x4c00, 0x8c00);

	/*
	 * set bit 0 reg 2 to 1 - unmute MonoOut
	 */
	waveartist_cmd3(devc, WACMD_SET_MIXER, 0x2801, 0x6800);

	/* set default input device = internal mic
	 * current recording device = none
	 */
	waveartist_set_recmask(devc, 0);

	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
		waveartist_mixer_update(devc, i);
}

static int __init waveartist_init(wavnc_info *devc)
{
	wavnc_port_info *portc;
	char rev[3], dev_name[64];
	int my_dev;

	if (waveartist_reset(devc))
		return -ENODEV;

	sprintf(dev_name, "%s (%s", devc->hw.name, devc->chip_name);

	if (waveartist_getrev(devc, rev)) {
		strcat(dev_name, " rev. ");
		strcat(dev_name, rev);
	}
	strcat(dev_name, ")");

	conf_printf2(dev_name, devc->hw.io_base, devc->hw.irq,
		     devc->hw.dma, devc->hw.dma2);

	portc = (wavnc_port_info *)kmalloc(sizeof(wavnc_port_info), GFP_KERNEL);
	if (portc == NULL)
		goto nomem;

	memset(portc, 0, sizeof(wavnc_port_info));

	my_dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION, dev_name,
			&waveartist_audio_driver, sizeof(struct audio_driver),
			devc->audio_flags, AFMT_U8 | AFMT_S16_LE | AFMT_S8,
			devc, devc->hw.dma, devc->hw.dma2);

	if (my_dev < 0)
		goto free;

	audio_devs[my_dev]->portc = portc;

	waveartist_mixer_reset(devc);

	/*
	 * clear any pending interrupt
	 */
	waveartist_iack(devc);

	if (request_irq(devc->hw.irq, waveartist_intr, 0, devc->hw.name, devc) < 0) {
		printk(KERN_ERR "%s: IRQ %d in use\n",
			devc->hw.name, devc->hw.irq);
		goto uninstall;
	}

	if (sound_alloc_dma(devc->hw.dma, devc->hw.name)) {
		printk(KERN_ERR "%s: Can't allocate DMA%d\n",
			devc->hw.name, devc->hw.dma);
		goto uninstall_irq;
	}

	if (devc->hw.dma != devc->hw.dma2 && devc->hw.dma2 != NO_DMA)
		if (sound_alloc_dma(devc->hw.dma2, devc->hw.name)) {
			printk(KERN_ERR "%s: can't allocate DMA%d\n",
				devc->hw.name, devc->hw.dma2);
			goto uninstall_dma;
		}

	waveartist_set_ctlr(&devc->hw, 0, DMA1_IE | DMA0_IE);

	audio_devs[my_dev]->mixer_dev =
		sound_install_mixer(MIXER_DRIVER_VERSION,
				dev_name,
				&waveartist_mixer_operations,
				sizeof(struct mixer_operations),
				devc);

	return my_dev;

uninstall_dma:
	sound_free_dma(devc->hw.dma);

uninstall_irq:
	free_irq(devc->hw.irq, devc);

uninstall:
	sound_unload_audiodev(my_dev);

free:
	kfree(portc);

nomem:
	return -1;
}

static int __init probe_waveartist(struct address_info *hw_config)
{
	wavnc_info *devc = &adev_info[nr_waveartist_devs];

	if (nr_waveartist_devs >= MAX_AUDIO_DEV) {
		printk(KERN_WARNING "waveartist: too many audio devices\n");
		return 0;
	}

	if (check_region(hw_config->io_base, 15))  {
		printk(KERN_WARNING "WaveArtist: I/O port conflict\n");
		return 0;
	}

	if (hw_config->irq > 15 || hw_config->irq < 0) {
		printk(KERN_WARNING "WaveArtist: Bad IRQ %d\n",
		       hw_config->irq);
		return 0;
	}

	if (hw_config->dma != 3) {
		printk(KERN_WARNING "WaveArtist: Bad DMA %d\n",
		       hw_config->dma);
		return 0;
	}

	hw_config->name = "WaveArtist";
	devc->hw = *hw_config;
	devc->open_mode = 0;
	devc->chip_name = "RWA-010";

	return 1;
}

static void __init
attach_waveartist(struct address_info *hw, const struct waveartist_mixer_info *mix)
{
	wavnc_info *devc = &adev_info[nr_waveartist_devs];

	/*
	 * NOTE! If irq < 0, there is another driver which has allocated the
	 *   IRQ so that this driver doesn't need to allocate/deallocate it.
	 *   The actually used IRQ is ABS(irq).
	 */
	devc->hw = *hw;
	devc->hw.irq = (hw->irq > 0) ? hw->irq : 0;
	devc->open_mode = 0;
	devc->playback_dev = 0;
	devc->record_dev = 0;
	devc->audio_flags = DMA_AUTOMODE;
	devc->levels = levels;

	if (hw->dma != hw->dma2 && hw->dma2 != NO_DMA)
		devc->audio_flags |= DMA_DUPLEX;

	request_region(hw->io_base, 15, devc->hw.name);

	devc->mix = mix;
	devc->dev_no = waveartist_init(devc);

	if (devc->dev_no < 0)
		release_region(hw->io_base, 15);
	else {
#ifdef CONFIG_ARCH_NETWINDER
		if (machine_is_netwinder()) {
			init_timer(&vnc_timer);
			vnc_timer.function = vnc_slider_tick;
			vnc_timer.expires  = jiffies;
			vnc_timer.data     = nr_waveartist_devs;
			add_timer(&vnc_timer);

			vnc_configure_mixer(devc, 0);

			devc->no_autoselect = 1;
		}
#endif
		nr_waveartist_devs += 1;
	}
}

static void __exit unload_waveartist(struct address_info *hw)
{
	wavnc_info *devc = NULL;
	int i;

	for (i = 0; i < nr_waveartist_devs; i++)
		if (hw->io_base == adev_info[i].hw.io_base) {
			devc = adev_info + i;
			break;
		}

	if (devc != NULL) {
		int mixer;

#ifdef CONFIG_ARCH_NETWINDER
		if (machine_is_netwinder())
			del_timer(&vnc_timer);
#endif

		release_region(devc->hw.io_base, 15);

		waveartist_set_ctlr(&devc->hw, DMA1_IE|DMA0_IE, 0);

		if (devc->hw.irq >= 0)
			free_irq(devc->hw.irq, devc);

		sound_free_dma(devc->hw.dma);

		if (devc->hw.dma != devc->hw.dma2 &&
		    devc->hw.dma2 != NO_DMA)
			sound_free_dma(devc->hw.dma2);

		mixer = audio_devs[devc->dev_no]->mixer_dev;

		if (mixer >= 0)
			sound_unload_mixerdev(mixer);

		if (devc->dev_no >= 0)
			sound_unload_audiodev(devc->dev_no);

		nr_waveartist_devs -= 1;

		for (; i < nr_waveartist_devs; i++)
			adev_info[i] = adev_info[i + 1];
	} else
		printk(KERN_WARNING "waveartist: can't find device "
		       "to unload\n");
}

#ifdef CONFIG_ARCH_NETWINDER

/*
 * Rebel.com Netwinder specifics...
 */

#include <asm/hardware/dec21285.h>
 
#define	VNC_TIMER_PERIOD (HZ/4)	//check slider 4 times/sec

#define	MIXER_PRIVATE3_RESET	0x53570000
#define	MIXER_PRIVATE3_READ	0x53570001
#define	MIXER_PRIVATE3_WRITE	0x53570002

#define	VNC_MUTE_INTERNAL_SPKR	0x01	//the sw mute on/off control bit
#define	VNC_MUTE_LINE_OUT	0x10
#define VNC_PHONE_DETECT	0x20
#define VNC_HANDSET_DETECT	0x40
#define VNC_DISABLE_AUTOSWITCH	0x80

extern spinlock_t gpio_lock;

static inline void
vnc_mute_spkr(wavnc_info *devc)
{
	unsigned long flags;

	spin_lock_irqsave(&gpio_lock, flags);
	cpld_modify(CPLD_UNMUTE, devc->spkr_mute_state ? 0 : CPLD_UNMUTE);
	spin_unlock_irqrestore(&gpio_lock, flags);
}

static void
vnc_mute_lout(wavnc_info *devc)
{
	unsigned int left, right;

	left  = waveartist_cmd1_r(devc, WACMD_GET_LEVEL);
	right = waveartist_cmd1_r(devc, WACMD_GET_LEVEL | 0x400);

	if (devc->line_mute_state) {
		left &= ~1;
		right &= ~1;
	} else {
		left |= 1;
		right |= 1;
	}
	waveartist_cmd3(devc, WACMD_SET_MIXER, left, right);
		
}

static int
vnc_volume_slider(wavnc_info *devc)
{
	static signed int old_slider_volume;
	unsigned long flags;
	signed int volume = 255;

	*CSR_TIMER1_LOAD = 0x00ffffff;

	save_flags(flags);
	cli();