dmasound_awacs.c

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		msleep(100);
		awacs_write(awacs_reg[6] + MASK_ADDR6);
		msleep(2);
		awacs_write(awacs_reg[1] + MASK_ADDR1);
		awacs_write(awacs_reg[7] + MASK_ADDR7);
	}
	if (awacs) {
		if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE))
			out_le32(&awacs->byteswap, BS_VAL);
		else
			out_le32(&awacs->byteswap, 0);
	}
}

#ifdef CONFIG_PMAC_PBOOK
/*
 * Save state when going to sleep, restore it afterwards.
 */
/* FIXME: sort out disabling/re-enabling of read stuff as well */
static int awacs_sleep_notify(struct pmu_sleep_notifier *self, int when)
{
	unsigned long flags;

	switch (when) {
	case PBOOK_SLEEP_NOW:		
		LOCK();
		awacs_sleeping = 1;
		/* Tell the rest of the driver we are now going to sleep */
		mb();
		if (awacs_revision == AWACS_SCREAMER ||
		    awacs_revision == AWACS_AWACS) {
			awacs_reg1_save = awacs_reg[1];
			awacs_reg[1] |= MASK_AMUTE | MASK_CMUTE;
			awacs_write(MASK_ADDR1 | awacs_reg[1]);
		}

		PMacSilence();
		/* stop rx - if going - a bit of a daft user... but */
		out_le32(&awacs_rxdma->control, (RUN|WAKE|FLUSH << 16));
		/* deny interrupts */
		if (awacs)
			disable_irq(awacs_irq);
		disable_irq(awacs_tx_irq);
		disable_irq(awacs_rx_irq);
		/* Chip specific sleep code */
		switch (awacs_revision) {
			case AWACS_TUMBLER:
			case AWACS_SNAPPER:
				write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
				write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
				tas_enter_sleep();
				write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol);
				break ;
			case AWACS_DACA:
				daca_enter_sleep();
				break ;
			case AWACS_BURGUNDY:
				break ;
			case AWACS_SCREAMER:
			case AWACS_AWACS:
			default:
				out_le32(&awacs->control, 0x11) ;
				break ;
		}
		/* Disable sound clock */
		pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 0);
		/* According to Darwin, we do that after turning off the sound
		 * chip clock. All this will have to be cleaned up once we properly
		 * parse the OF sound-objects
		 */
		if ((machine_is_compatible("PowerBook3,1") ||
		    machine_is_compatible("PowerBook3,2")) && awacs) {
			awacs_reg[1] |= MASK_PAROUT0 | MASK_PAROUT1;
			awacs_write(MASK_ADDR1 | awacs_reg[1]);
			msleep(200);
		}
		break;
	case PBOOK_WAKE:
		/* Enable sound clock */
		pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 1);
		if ((machine_is_compatible("PowerBook3,1") ||
		    machine_is_compatible("PowerBook3,2")) && awacs) {
			msleep(100);
			awacs_reg[1] &= ~(MASK_PAROUT0 | MASK_PAROUT1);
			awacs_write(MASK_ADDR1 | awacs_reg[1]);
			msleep(300);
		} else
			msleep(1000);
 		/* restore settings */
		switch (awacs_revision) {
			case AWACS_TUMBLER:
			case AWACS_SNAPPER:
				write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
				write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
				write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol);
				msleep(100);
				write_audio_gpio(gpio_audio_reset, !gpio_audio_reset_pol);
				msleep(150);
				tas_leave_sleep(); /* Stub for now */
				headphone_intr(0,NULL,NULL);
				break;
			case AWACS_DACA:
				msleep(10); /* Check this !!! */
				daca_leave_sleep();
				break ;		/* dont know how yet */
			case AWACS_BURGUNDY:
				break ;
			case AWACS_SCREAMER:
			case AWACS_AWACS:
			default:
		 		load_awacs() ;
				break ;
		}
		/* Recalibrate chip */
		if (awacs_revision == AWACS_SCREAMER && awacs)
			awacs_recalibrate();
		/* Make sure dma is stopped */
		PMacSilence();
		if (awacs)
			enable_irq(awacs_irq);
		enable_irq(awacs_tx_irq);
 		enable_irq(awacs_rx_irq);
 		if (awacs) {
 			/* OK, allow ints back again */
	 		out_le32(&awacs->control, MASK_IEPC
 			 	| (awacs_rate_index << 8) | 0x11
 				 | (awacs_revision < AWACS_DACA ? MASK_IEE: 0));
 		}
 		if (macio_base && is_pbook_g3) {
			/* FIXME: should restore the setup we had...*/
			out_8(macio_base + 0x37, 3);
 		} else if (is_pbook_3X00) {
			in_8(latch_base + 0x190);
		}
		/* Remove mute */
		if (awacs_revision == AWACS_SCREAMER ||
		    awacs_revision == AWACS_AWACS) {
			awacs_reg[1] = awacs_reg1_save;
			awacs_write(MASK_ADDR1 | awacs_reg[1]);
		}
 		awacs_sleeping = 0;
		/* Resume pending sounds. */
		/* we don't try to restart input... */
		spin_lock_irqsave(&dmasound.lock, flags);
		__PMacPlay();
		spin_unlock_irqrestore(&dmasound.lock, flags);
		UNLOCK();
	}
	return PBOOK_SLEEP_OK;
}
#endif /* CONFIG_PMAC_PBOOK */


/* All the burgundy functions: */

/* Waits for busy flag to clear */
inline static void
awacs_burgundy_busy_wait(void)
{
	int count = 50; /* > 2 samples at 44k1 */
	while ((in_le32(&awacs->codec_ctrl) & MASK_NEWECMD) && count--)
		udelay(1) ;
}

inline static void
awacs_burgundy_extend_wait(void)
{
	int count = 50 ; /* > 2 samples at 44k1 */
	while ((!(in_le32(&awacs->codec_stat) & MASK_EXTEND)) && count--)
		udelay(1) ;
	count = 50;
	while ((in_le32(&awacs->codec_stat) & MASK_EXTEND) && count--)
		udelay(1);
}

static void
awacs_burgundy_wcw(unsigned addr, unsigned val)
{
	out_le32(&awacs->codec_ctrl, addr + 0x200c00 + (val & 0xff));
	awacs_burgundy_busy_wait();
	out_le32(&awacs->codec_ctrl, addr + 0x200d00 +((val>>8) & 0xff));
	awacs_burgundy_busy_wait();
	out_le32(&awacs->codec_ctrl, addr + 0x200e00 +((val>>16) & 0xff));
	awacs_burgundy_busy_wait();
	out_le32(&awacs->codec_ctrl, addr + 0x200f00 +((val>>24) & 0xff));
	awacs_burgundy_busy_wait();
}

static unsigned
awacs_burgundy_rcw(unsigned addr)
{
	unsigned val = 0;
	unsigned long flags;

	/* should have timeouts here */
	spin_lock_irqsave(&dmasound.lock, flags);

	out_le32(&awacs->codec_ctrl, addr + 0x100000);
	awacs_burgundy_busy_wait();
	awacs_burgundy_extend_wait();
	val += (in_le32(&awacs->codec_stat) >> 4) & 0xff;

	out_le32(&awacs->codec_ctrl, addr + 0x100100);
	awacs_burgundy_busy_wait();
	awacs_burgundy_extend_wait();
	val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<8;

	out_le32(&awacs->codec_ctrl, addr + 0x100200);
	awacs_burgundy_busy_wait();
	awacs_burgundy_extend_wait();
	val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<16;

	out_le32(&awacs->codec_ctrl, addr + 0x100300);
	awacs_burgundy_busy_wait();
	awacs_burgundy_extend_wait();
	val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<24;

	spin_unlock_irqrestore(&dmasound.lock, flags);

	return val;
}


static void
awacs_burgundy_wcb(unsigned addr, unsigned val)
{
	out_le32(&awacs->codec_ctrl, addr + 0x300000 + (val & 0xff));
	awacs_burgundy_busy_wait();
}

static unsigned
awacs_burgundy_rcb(unsigned addr)
{
	unsigned val = 0;
	unsigned long flags;

	/* should have timeouts here */
	spin_lock_irqsave(&dmasound.lock, flags);

	out_le32(&awacs->codec_ctrl, addr + 0x100000);
	awacs_burgundy_busy_wait();
	awacs_burgundy_extend_wait();
	val += (in_le32(&awacs->codec_stat) >> 4) & 0xff;

	spin_unlock_irqrestore(&dmasound.lock, flags);

	return val;
}

static int
awacs_burgundy_check(void)
{
	/* Checks to see the chip is alive and kicking */
	int error = in_le32(&awacs->codec_ctrl) & MASK_ERRCODE;

	return error == 0xf0000;
}

static int
awacs_burgundy_init(void)
{
	if (awacs_burgundy_check()) {
		printk(KERN_WARNING "dmasound_pmac: burgundy not working :-(\n");
		return 1;
	}

	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_OUTPUTENABLES,
			   DEF_BURGUNDY_OUTPUTENABLES);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
			   DEF_BURGUNDY_MORE_OUTPUTENABLES);
	awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_OUTPUTSELECTS,
			   DEF_BURGUNDY_OUTPUTSELECTS);

	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_INPSEL21,
			   DEF_BURGUNDY_INPSEL21);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_INPSEL3,
			   DEF_BURGUNDY_INPSEL3);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINCD,
			   DEF_BURGUNDY_GAINCD);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINLINE,
			   DEF_BURGUNDY_GAINLINE);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINMIC,
			   DEF_BURGUNDY_GAINMIC);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINMODEM,
			   DEF_BURGUNDY_GAINMODEM);

	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENSPEAKER,
			   DEF_BURGUNDY_ATTENSPEAKER);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENLINEOUT,
			   DEF_BURGUNDY_ATTENLINEOUT);
	awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENHP,
			   DEF_BURGUNDY_ATTENHP);

	awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_MASTER_VOLUME,
			   DEF_BURGUNDY_MASTER_VOLUME);
	awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLCD,
			   DEF_BURGUNDY_VOLCD);
	awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLLINE,
			   DEF_BURGUNDY_VOLLINE);
	awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLMIC,
			   DEF_BURGUNDY_VOLMIC);
	return 0;
}

static void
awacs_burgundy_write_volume(unsigned address, int volume)
{
	int hardvolume,lvolume,rvolume;

	lvolume = (volume & 0xff) ? (volume & 0xff) + 155 : 0;
	rvolume = ((volume >>8)&0xff) ? ((volume >> 8)&0xff ) + 155 : 0;

	hardvolume = lvolume + (rvolume << 16);

	awacs_burgundy_wcw(address, hardvolume);
}

static int
awacs_burgundy_read_volume(unsigned address)
{
	int softvolume,wvolume;

	wvolume = awacs_burgundy_rcw(address);

	softvolume = (wvolume & 0xff) - 155;
	softvolume += (((wvolume >> 16) & 0xff) - 155)<<8;

	return softvolume > 0 ? softvolume : 0;
}

static int
awacs_burgundy_read_mvolume(unsigned address)
{
	int lvolume,rvolume,wvolume;

	wvolume = awacs_burgundy_rcw(address);

	wvolume &= 0xffff;

	rvolume = (wvolume & 0xff) - 155;
	lvolume = ((wvolume & 0xff00)>>8) - 155;

	return lvolume + (rvolume << 8);
}

static void
awacs_burgundy_write_mvolume(unsigned address, int volume)
{
	int lvolume,rvolume,hardvolume;

	lvolume = (volume &0xff) ? (volume & 0xff) + 155 :0;
	rvolume = ((volume >>8) & 0xff) ? (volume >> 8) + 155 :0;

	hardvolume = lvolume + (rvolume << 8);
	hardvolume += (hardvolume << 16);

	awacs_burgundy_wcw(address, hardvolume);
}

/* End burgundy functions */

/* Set up output volumes on machines with the 'perch/whisper' extension card.
 * this has an SGS i2c chip (7433) which is accessed using the cuda.
 *
 * TODO: split this out and make use of the other parts of the SGS chip to
 * do Bass, Treble etc.
 */

static void
awacs_enable_amp(int spkr_vol)
{
#ifdef CONFIG_ADB_CUDA
	struct adb_request req;

	if (sys_ctrler != SYS_CTRLER_CUDA)
		return;

	/* turn on headphones */
	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
		     0x8a, 4, 0);
	while (!req.complete) cuda_poll();
	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
		     0x8a, 6, 0);
	while (!req.complete) cuda_poll();

	/* turn on speaker */
	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
		     0x8a, 3, (100 - (spkr_vol & 0xff)) * 32 / 100);
	while (!req.complete) cuda_poll();
	cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
		     0x8a, 5, (100 - ((spkr_vol >> 8) & 0xff)) * 32 / 100);
	while (!req.complete) cuda_poll();

	cuda_request(&req, NULL, 5, CUDA_PACKET,
		     CUDA_GET_SET_IIC, 0x8a, 1, 0x29);
	while (!req.complete) cuda_poll();
#endif /* CONFIG_ADB_CUDA */
}


/*** Mid level stuff *********************************************************/


/*
 * /dev/mixer abstraction
 */

static void do_line_lev(int data)
{
		line_lev = data ;
		awacs_reg[0] &= ~MASK_MUX_AUDIN;
		if ((data & 0xff) >= 50)
			awacs_reg[0] |= MASK_MUX_AUDIN;
		awacs_write(MASK_ADDR0 | awacs_reg[0]);
}

static void do_ip_gain(int data)
{
	ip_gain = data ;
	data &= 0xff;
	awacs_reg[0] &= ~MASK_GAINLINE;
	if (awacs_revision == AWACS_SCREAMER) {
		awacs_reg[6] &= ~MASK_MIC_BOOST ;
		if (data >= 33) {
			awacs_reg[0] |= MASK_GAINLINE;
			if( data >= 66)
				awacs_reg[6] |= MASK_MIC_BOOST ;
		}
		awacs_write(MASK_ADDR6 | awacs_reg[6]) ;
	} else {
		if (data >= 50)
			awacs_reg[0] |= MASK_GAINLINE;
	}
	awacs_write(MASK_ADDR0 | awacs_reg[0]);
}

static void do_mic_lev(int data)
{
	mic_lev = data ;
	data &= 0xff;
	awacs_reg[0] &= ~MASK_MUX_MIC;
	if (data >= 50)
		awacs_reg[0] |= MASK_MUX_MIC;
	awacs_write(MASK_ADDR0 | awacs_reg[0]);
}

static void do_cd_lev(int data)
{
	cd_lev = data ;
	awacs_reg[0] &= ~MASK_MUX_CD;
	if ((data & 0xff) >= 50)
		awacs_reg[0] |= MASK_MUX_CD;
	awacs_write(MASK_ADDR0 | awacs_reg[0]);
}

static void do_rec_lev(int data)
{
	int left, right ;
	rec_lev = data ;
	/* need to fudge this to use the volume setter routine */
	left = 100 - (data & 0xff) ; if( left < 0 ) left = 0 ;
	right = 100 - ((data >> 8) & 0xff) ; if( right < 0 ) right = 0 ;
	left |= (right << 8 );
	left = awacs_volume_setter(left, 0, 0, 4);
}

static void do_passthru_vol(int data)
{
	passthru_vol = data ;