maestro3.c

linux 内核源代码

	unsigned int allegro_flag : 1;

	struct snd_ac97 *ac97;

	struct snd_pcm *pcm;

	struct pci_dev *pci;

	int dacs_active;
	int timer_users;

	struct m3_list  msrc_list;
	struct m3_list  mixer_list;
	struct m3_list  adc1_list;
	struct m3_list  dma_list;

	/* for storing reset state..*/
	u8 reset_state;

	int external_amp;
	int amp_gpio;	/* gpio pin #  for external amp, -1 = default */
	unsigned int hv_config;		/* hardware-volume config bits */
	unsigned irda_workaround :1;	/* avoid to touch 0x10 on GPIO_DIRECTION
					   (e.g. for IrDA on Dell Inspirons) */
	unsigned is_omnibook :1;	/* Do HP OmniBook GPIO magic? */

	/* midi */
	struct snd_rawmidi *rmidi;

	/* pcm streams */
	int num_substreams;
	struct m3_dma *substreams;

	spinlock_t reg_lock;
	spinlock_t ac97_lock;

	struct snd_kcontrol *master_switch;
	struct snd_kcontrol *master_volume;
	struct tasklet_struct hwvol_tq;

#ifdef CONFIG_PM
	u16 *suspend_mem;
#endif

	const struct firmware *assp_kernel_image;
	const struct firmware *assp_minisrc_image;
};

/*
 * pci ids
 */
static struct pci_device_id snd_m3_ids[] = {
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ALLEGRO_1, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ALLEGRO, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_CANYON3D_2LE, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_CANYON3D_2, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_1, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_HW, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_2, PCI_ANY_ID, PCI_ANY_ID,
	 PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
	{0,},
};

MODULE_DEVICE_TABLE(pci, snd_m3_ids);

static struct snd_pci_quirk m3_amp_quirk_list[] __devinitdata = {
	SND_PCI_QUIRK(0x10f7, 0x833e, "Panasonic CF-28", 0x0d),
	SND_PCI_QUIRK(0x10f7, 0x833d, "Panasonic CF-72", 0x0d),
	SND_PCI_QUIRK(0x1033, 0x80f1, "NEC LM800J/7", 0x03),
	SND_PCI_QUIRK(0x1509, 0x1740, "LEGEND ZhaoYang 3100CF", 0x03),
	{ } /* END */
};

static struct snd_pci_quirk m3_irda_quirk_list[] __devinitdata = {
	SND_PCI_QUIRK(0x1028, 0x00b0, "Dell Inspiron 4000", 1),
	SND_PCI_QUIRK(0x1028, 0x00a4, "Dell Inspiron 8000", 1),
	SND_PCI_QUIRK(0x1028, 0x00e6, "Dell Inspiron 8100", 1),
	{ } /* END */
};

/* hardware volume quirks */
static struct snd_pci_quirk m3_hv_quirk_list[] __devinitdata = {
	/* Allegro chips */
	SND_PCI_QUIRK(0x0E11, 0x002E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x0E11, 0x0094, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x0E11, 0xB112, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x0E11, 0xB114, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x103C, 0x0012, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x103C, 0x0018, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x103C, 0x001C, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x103C, 0x001D, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x103C, 0x001E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x107B, 0x3350, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x10F7, 0x8338, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x10F7, 0x833C, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x10F7, 0x833D, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x10F7, 0x833E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x10F7, 0x833F, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x13BD, 0x1018, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x13BD, 0x1019, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x13BD, 0x101A, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x14FF, 0x0F03, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x14FF, 0x0F04, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x14FF, 0x0F05, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x156D, 0xB400, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x156D, 0xB795, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x156D, 0xB797, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x156D, 0xC700, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
	SND_PCI_QUIRK(0x1033, 0x80F1, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x103C, 0x001A, NULL, /* HP OmniBook 6100 */
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x107B, 0x340A, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x107B, 0x3450, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x109F, 0x3134, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x109F, 0x3161, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0x3280, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0x3281, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0xC002, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0xC003, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x1509, 0x1740, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x1610, 0x0010, NULL,
		      HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x1042, 0x1042, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x107B, 0x9500, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x14FF, 0x0F06, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x1558, 0x8586, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x161F, 0x2011, NULL, HV_CTRL_ENABLE),
	/* Maestro3 chips */
	SND_PCI_QUIRK(0x103C, 0x000E, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x103C, 0x0010, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x103C, 0x0011, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x103C, 0x001B, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x104D, 0x80A6, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x104D, 0x80AA, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x107B, 0x5300, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x110A, 0x1998, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x13BD, 0x1015, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x13BD, 0x101C, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x13BD, 0x1802, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x1599, 0x0715, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x5643, 0x5643, NULL, HV_CTRL_ENABLE),
	SND_PCI_QUIRK(0x144D, 0x3260, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0x3261, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0xC000, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
	SND_PCI_QUIRK(0x144D, 0xC001, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
	{ } /* END */
};

/* HP Omnibook quirks */
static struct snd_pci_quirk m3_omnibook_quirk_list[] __devinitdata = {
	SND_PCI_QUIRK_ID(0x103c, 0x0010), /* HP OmniBook 6000 */
	SND_PCI_QUIRK_ID(0x103c, 0x0011), /* HP OmniBook 500 */
	{ } /* END */
};

/*
 * lowlevel functions
 */

static inline void snd_m3_outw(struct snd_m3 *chip, u16 value, unsigned long reg)
{
	outw(value, chip->iobase + reg);
}

static inline u16 snd_m3_inw(struct snd_m3 *chip, unsigned long reg)
{
	return inw(chip->iobase + reg);
}

static inline void snd_m3_outb(struct snd_m3 *chip, u8 value, unsigned long reg)
{
	outb(value, chip->iobase + reg);
}

static inline u8 snd_m3_inb(struct snd_m3 *chip, unsigned long reg)
{
	return inb(chip->iobase + reg);
}

/*
 * access 16bit words to the code or data regions of the dsp's memory.
 * index addresses 16bit words.
 */
static u16 snd_m3_assp_read(struct snd_m3 *chip, u16 region, u16 index)
{
	snd_m3_outw(chip, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
	snd_m3_outw(chip, index, DSP_PORT_MEMORY_INDEX);
	return snd_m3_inw(chip, DSP_PORT_MEMORY_DATA);
}

static void snd_m3_assp_write(struct snd_m3 *chip, u16 region, u16 index, u16 data)
{
	snd_m3_outw(chip, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
	snd_m3_outw(chip, index, DSP_PORT_MEMORY_INDEX);
	snd_m3_outw(chip, data, DSP_PORT_MEMORY_DATA);
}

static void snd_m3_assp_halt(struct snd_m3 *chip)
{
	chip->reset_state = snd_m3_inb(chip, DSP_PORT_CONTROL_REG_B) & ~REGB_STOP_CLOCK;
	msleep(10);
	snd_m3_outb(chip, chip->reset_state & ~REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
}

static void snd_m3_assp_continue(struct snd_m3 *chip)
{
	snd_m3_outb(chip, chip->reset_state | REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
}


/*
 * This makes me sad. the maestro3 has lists
 * internally that must be packed.. 0 terminates,
 * apparently, or maybe all unused entries have
 * to be 0, the lists have static lengths set
 * by the binary code images.
 */

static int snd_m3_add_list(struct snd_m3 *chip, struct m3_list *list, u16 val)
{
	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  list->mem_addr + list->curlen,
			  val);
	return list->curlen++;
}

static void snd_m3_remove_list(struct snd_m3 *chip, struct m3_list *list, int index)
{
	u16  val;
	int lastindex = list->curlen - 1;

	if (index != lastindex) {
		val = snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA,
				       list->mem_addr + lastindex);
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  list->mem_addr + index,
				  val);
	}

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  list->mem_addr + lastindex,
			  0);

	list->curlen--;
}

static void snd_m3_inc_timer_users(struct snd_m3 *chip)
{
	chip->timer_users++;
	if (chip->timer_users != 1) 
		return;

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  KDATA_TIMER_COUNT_RELOAD,
			  240);

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  KDATA_TIMER_COUNT_CURRENT,
			  240);

	snd_m3_outw(chip,
		    snd_m3_inw(chip, HOST_INT_CTRL) | CLKRUN_GEN_ENABLE,
		    HOST_INT_CTRL);
}

static void snd_m3_dec_timer_users(struct snd_m3 *chip)
{
	chip->timer_users--;
	if (chip->timer_users > 0)  
		return;

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  KDATA_TIMER_COUNT_RELOAD,
			  0);

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  KDATA_TIMER_COUNT_CURRENT,
			  0);

	snd_m3_outw(chip,
		    snd_m3_inw(chip, HOST_INT_CTRL) & ~CLKRUN_GEN_ENABLE,
		    HOST_INT_CTRL);
}

/*
 * start/stop
 */

/* spinlock held! */
static int snd_m3_pcm_start(struct snd_m3 *chip, struct m3_dma *s,
			    struct snd_pcm_substream *subs)
{
	if (! s || ! subs)
		return -EINVAL;

	snd_m3_inc_timer_users(chip);
	switch (subs->stream) {
	case SNDRV_PCM_STREAM_PLAYBACK:
		chip->dacs_active++;
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  s->inst.data + CDATA_INSTANCE_READY, 1);
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  KDATA_MIXER_TASK_NUMBER,
				  chip->dacs_active);
		break;
	case SNDRV_PCM_STREAM_CAPTURE:
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  KDATA_ADC1_REQUEST, 1);
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  s->inst.data + CDATA_INSTANCE_READY, 1);
		break;
	}
	return 0;
}

/* spinlock held! */
static int snd_m3_pcm_stop(struct snd_m3 *chip, struct m3_dma *s,
			   struct snd_pcm_substream *subs)
{
	if (! s || ! subs)
		return -EINVAL;

	snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
			  s->inst.data + CDATA_INSTANCE_READY, 0);
	snd_m3_dec_timer_users(chip);
	switch (subs->stream) {
	case SNDRV_PCM_STREAM_PLAYBACK:
		chip->dacs_active--;
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  KDATA_MIXER_TASK_NUMBER, 
				  chip->dacs_active);
		break;
	case SNDRV_PCM_STREAM_CAPTURE:
		snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
				  KDATA_ADC1_REQUEST, 0);
		break;
	}
	return 0;
}

static int
snd_m3_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
{
	struct snd_m3 *chip = snd_pcm_substream_chip(subs);
	struct m3_dma *s = subs->runtime->private_data;
	int err = -EINVAL;

	snd_assert(s != NULL, return -ENXIO);

	spin_lock(&chip->reg_lock);
	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
		if (s->running)
			err = -EBUSY;
		else {
			s->running = 1;
			err = snd_m3_pcm_start(chip, s, subs);
		}
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
		if (! s->running)
			err = 0; /* should return error? */
		else {
			s->running = 0;
			err = snd_m3_pcm_stop(chip, s, subs);
		}
		break;
	}
	spin_unlock(&chip->reg_lock);
	return err;
}

/*
 * setup
 */
static void 
snd_m3_pcm_setup1(struct snd_m3 *chip, struct m3_dma *s, struct snd_pcm_substream *subs)
{
	int dsp_in_size, dsp_out_size, dsp_in_buffer, dsp_out_buffer;
	struct snd_pcm_runtime *runtime = subs->runtime;

	if (subs->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
		dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
	} else {
		dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
		dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
	}