[deliverable/linux.git] / sound / pci / cs5535audio / cs5535audio.c

/*
 * Driver for audio on multifunction CS5535/6 companion device
 * Copyright (C) Jaya Kumar
 *
 * Based on Jaroslav Kysela and Takashi Iwai's examples.
 * This work was sponsored by CIS(M) Sdn Bhd.
 *
 * 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 <sound/driver.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <asm/io.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/asoundef.h>
#include "cs5535audio.h"

#define DRIVER_NAME "cs5535audio"

static char *ac97_quirk;
module_param(ac97_quirk, charp, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds.");

static struct ac97_quirk ac97_quirks[] __devinitdata = {
#if 0 /* Not yet confirmed if all 5536 boards are HP only */
	{
		.subvendor = PCI_VENDOR_ID_AMD, 
		.subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO, 
		.name = "AMD RDK",     
		.type = AC97_TUNE_HP_ONLY
	},
#endif
	{}
};

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " DRIVER_NAME);
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " DRIVER_NAME);
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " DRIVER_NAME);

static struct pci_device_id snd_cs5535audio_ids[] __devinitdata = {
	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) },
	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) },
	{}
};

MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);

static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long timeout)
{
	unsigned int tmp;
	do {
		tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
		if (!(tmp & CMD_NEW))
			break;
		udelay(1);
	} while (--timeout);
	if (!timeout)
		snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
}

static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au,
						 unsigned short reg)
{
	unsigned int regdata;
	unsigned int timeout;
	unsigned int val;

	regdata = ((unsigned int) reg) << 24;
	regdata |= ACC_CODEC_CNTL_RD_CMD;
	regdata |= CMD_NEW;

	cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
	wait_till_cmd_acked(cs5535au, 50);

	timeout = 50;
	do {
		val = cs_readl(cs5535au, ACC_CODEC_STATUS);
		if ((val & STS_NEW) && reg == (val >> 24))
			break;
		udelay(1);
	} while (--timeout);
	if (!timeout)
		snd_printk(KERN_ERR "Failure reading codec reg 0x%x,"
					"Last value=0x%x\n", reg, val);

	return (unsigned short) val;
}

static void snd_cs5535audio_codec_write(struct cs5535audio *cs5535au,
					unsigned short reg, unsigned short val)
{
	unsigned int regdata;

	regdata = ((unsigned int) reg) << 24;
	regdata |= val;
	regdata &= CMD_MASK;
	regdata |= CMD_NEW;
	regdata &= ACC_CODEC_CNTL_WR_CMD;

	cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
	wait_till_cmd_acked(cs5535au, 50);
}

static void snd_cs5535audio_ac97_codec_write(struct snd_ac97 *ac97,
					     unsigned short reg, unsigned short val)
{
	struct cs5535audio *cs5535au = ac97->private_data;
	snd_cs5535audio_codec_write(cs5535au, reg, val);
}

static unsigned short snd_cs5535audio_ac97_codec_read(struct snd_ac97 *ac97,
						      unsigned short reg)
{
	struct cs5535audio *cs5535au = ac97->private_data;
	return snd_cs5535audio_codec_read(cs5535au, reg);
}

static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
{
	struct snd_card *card = cs5535au->card;
	struct snd_ac97_bus *pbus;
	struct snd_ac97_template ac97;
	int err;
	static struct snd_ac97_bus_ops ops = {
		.write = snd_cs5535audio_ac97_codec_write,
		.read = snd_cs5535audio_ac97_codec_read,
	};

	if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
		return err;

	memset(&ac97, 0, sizeof(ac97));
	ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
	ac97.private_data = cs5535au;
	ac97.pci = cs5535au->pci;

	if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
		snd_printk(KERN_ERR "mixer failed\n");
		return err;
	}

	snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);

	return 0;
}

static void process_bm0_irq(struct cs5535audio *cs5535au)
{
	u8 bm_stat;
	spin_lock(&cs5535au->reg_lock);
	bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS);
	spin_unlock(&cs5535au->reg_lock);
	if (bm_stat & EOP) {
		struct cs5535audio_dma *dma;
		dma = cs5535au->playback_substream->runtime->private_data;
		snd_pcm_period_elapsed(cs5535au->playback_substream);
	} else {
		snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n",
					bm_stat);
	}
}

static void process_bm1_irq(struct cs5535audio *cs5535au)
{
	u8 bm_stat;
	spin_lock(&cs5535au->reg_lock);
	bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS);
	spin_unlock(&cs5535au->reg_lock);
	if (bm_stat & EOP) {
		struct cs5535audio_dma *dma;
		dma = cs5535au->capture_substream->runtime->private_data;
		snd_pcm_period_elapsed(cs5535au->capture_substream);
	}
}

static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
					     struct pt_regs *regs)
{
	u16 acc_irq_stat;
	u8 bm_stat;
	unsigned char count;
	struct cs5535audio *cs5535au = dev_id;

	if (cs5535au == NULL)
		return IRQ_NONE;

	acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS);

	if (!acc_irq_stat)
		return IRQ_NONE;
	for (count = 0; count < 10; count++) {
		if (acc_irq_stat & (1 << count)) {
			switch (count) {
			case IRQ_STS:
				cs_readl(cs5535au, ACC_GPIO_STATUS);
				break;
			case WU_IRQ_STS:
				cs_readl(cs5535au, ACC_GPIO_STATUS);
				break;
			case BM0_IRQ_STS:
				process_bm0_irq(cs5535au);
				break;
			case BM1_IRQ_STS:
				process_bm1_irq(cs5535au);
				break;
			case BM2_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
				break;
			case BM3_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
				break;
			case BM4_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
				break;
			case BM5_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
				break;
			case BM6_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
				break;
			case BM7_IRQ_STS:
				bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
				break;
			default:
				snd_printk(KERN_ERR "Unexpected irq src\n");
				break;
			}
		}
	}
	return IRQ_HANDLED;
}

static int snd_cs5535audio_free(struct cs5535audio *cs5535au)
{
	synchronize_irq(cs5535au->irq);
	pci_set_power_state(cs5535au->pci, 3);

	if (cs5535au->irq >= 0)
		free_irq(cs5535au->irq, cs5535au);

	pci_release_regions(cs5535au->pci);
	pci_disable_device(cs5535au->pci);
	kfree(cs5535au);
	return 0;
}

static int snd_cs5535audio_dev_free(struct snd_device *device)
{
	struct cs5535audio *cs5535au = device->device_data;
	return snd_cs5535audio_free(cs5535au);
}

static int __devinit snd_cs5535audio_create(struct snd_card *card,
					    struct pci_dev *pci,
					    struct cs5535audio **rcs5535au)
{
	struct cs5535audio *cs5535au;

	int err;
	static struct snd_device_ops ops = {
		.dev_free =	snd_cs5535audio_dev_free,
	};

	*rcs5535au = NULL;
	if ((err = pci_enable_device(pci)) < 0)
		return err;

	if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
	    pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
		printk(KERN_WARNING "unable to get 32bit dma\n");
		err = -ENXIO;
		goto pcifail;
	}

	cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL);
	if (cs5535au == NULL) {
		err = -ENOMEM;
		goto pcifail;
	}

	spin_lock_init(&cs5535au->reg_lock);
	cs5535au->card = card;
	cs5535au->pci = pci;
	cs5535au->irq = -1;

	if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) {
		kfree(cs5535au);
		goto pcifail;
	}

	cs5535au->port = pci_resource_start(pci, 0);

	if (request_irq(pci->irq, snd_cs5535audio_interrupt,
			IRQF_DISABLED|IRQF_SHARED, "CS5535 Audio", cs5535au)) {
		snd_printk("unable to grab IRQ %d\n", pci->irq);
		err = -EBUSY;
		goto sndfail;
	}

	cs5535au->irq = pci->irq;
	pci_set_master(pci);

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
				  cs5535au, &ops)) < 0)
		goto sndfail;

	snd_card_set_dev(card, &pci->dev);

	*rcs5535au = cs5535au;
	return 0;

sndfail: /* leave the device alive, just kill the snd */
	snd_cs5535audio_free(cs5535au);
	return err;

pcifail:
	pci_disable_device(pci);
	return err;
}

static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
					   const struct pci_device_id *pci_id)
{
	static int dev;
	struct snd_card *card;
	struct cs5535audio *cs5535au;
	int err;

	if (dev >= SNDRV_CARDS)
		return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}

	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;

	if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
		goto probefail_out;

	card->private_data = cs5535au;

	if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
		goto probefail_out;

	if ((err = snd_cs5535audio_pcm(cs5535au)) < 0)
		goto probefail_out;

	strcpy(card->driver, DRIVER_NAME);

	strcpy(card->shortname, "CS5535 Audio");
	sprintf(card->longname, "%s %s at 0x%lx, irq %i",
		card->shortname, card->driver,
		cs5535au->port, cs5535au->irq);

	if ((err = snd_card_register(card)) < 0)
		goto probefail_out;

	pci_set_drvdata(pci, card);
	dev++;
	return 0;

probefail_out:
	snd_card_free(card);
	return err;
}

static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

static struct pci_driver driver = {
	.name = DRIVER_NAME,
	.id_table = snd_cs5535audio_ids,
	.probe = snd_cs5535audio_probe,
	.remove = __devexit_p(snd_cs5535audio_remove),
#ifdef CONFIG_PM
	.suspend = snd_cs5535audio_suspend,
	.resume = snd_cs5535audio_resume,
#endif
};

static int __init alsa_card_cs5535audio_init(void)
{
	return pci_register_driver(&driver);
}

static void __exit alsa_card_cs5535audio_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_cs5535audio_init)
module_exit(alsa_card_cs5535audio_exit)

MODULE_AUTHOR("Jaya Kumar");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("CS5535 Audio");
MODULE_SUPPORTED_DEVICE("CS5535 Audio");
Commit	Line	Data
9b4ffa48	1	/*
9ac25594	2	* Driver for audio on multifunction CS5535/6 companion device
9b4ffa48 JK	3	* Copyright (C) Jaya Kumar
	4	*
	5	* Based on Jaroslav Kysela and Takashi Iwai's examples.
	6	* This work was sponsored by CIS(M) Sdn Bhd.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
ac09a925	24	#include <sound/driver.h>
9b4ffa48 JK	25	#include <linux/delay.h>
	26	#include <linux/interrupt.h>
	27	#include <linux/init.h>
	28	#include <linux/pci.h>
	29	#include <linux/slab.h>
	30	#include <linux/moduleparam.h>
	31	#include <asm/io.h>
9b4ffa48 JK	32	#include <sound/core.h>
	33	#include <sound/control.h>
	34	#include <sound/pcm.h>
	35	#include <sound/rawmidi.h>
	36	#include <sound/ac97_codec.h>
	37	#include <sound/initval.h>
	38	#include <sound/asoundef.h>
	39	#include "cs5535audio.h"
	40
	41	#define DRIVER_NAME "cs5535audio"
	42
9ac25594 JK	43	static char *ac97_quirk;
	44	module_param(ac97_quirk, charp, 0444);
	45	MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds.");
	46
	47	static struct ac97_quirk ac97_quirks[] __devinitdata = {
	48	#if 0 /* Not yet confirmed if all 5536 boards are HP only */
	49	{
	50	.subvendor = PCI_VENDOR_ID_AMD,
	51	.subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO,
	52	.name = "AMD RDK",
	53	.type = AC97_TUNE_HP_ONLY
	54	},
	55	#endif
	56	{}
	57	};
9b4ffa48	58
302e4c2f TI	59	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
	60	static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
	61	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
9b4ffa48	62
302e4c2f	63	module_param_array(index, int, NULL, 0444);
1dbfd8c5	64	MODULE_PARM_DESC(index, "Index value for " DRIVER_NAME);
302e4c2f	65	module_param_array(id, charp, NULL, 0444);
1dbfd8c5	66	MODULE_PARM_DESC(id, "ID string for " DRIVER_NAME);
302e4c2f TI	67	module_param_array(enable, bool, NULL, 0444);
302e4c2f TI	68	MODULE_PARM_DESC(enable, "Enable " DRIVER_NAME);
1dbfd8c5	69
396c9b92	70	static struct pci_device_id snd_cs5535audio_ids[] __devinitdata = {
9ac25594 JK	71	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) },
9ac25594 JK	72	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) },
9b4ffa48 JK	73	{}
	74	};
	75
	76	MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);
	77
66f8df6b	78	static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long timeout)
9b4ffa48	79	{
3e873174	80	unsigned int tmp;
9b4ffa48 JK	81	do {
	82	tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
	83	if (!(tmp & CMD_NEW))
	84	break;
1037593c	85	udelay(1);
9b4ffa48 JK	86	} while (--timeout);
	87	if (!timeout)
	88	snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
	89	}
	90
66f8df6b TI	91	static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au,
66f8df6b TI	92	unsigned short reg)
9b4ffa48	93	{
3e873174	94	unsigned int regdata;
66f8df6b	95	unsigned int timeout;
3e873174	96	unsigned int val;
9b4ffa48	97
3e873174	98	regdata = ((unsigned int) reg) << 24;
9b4ffa48 JK	99	regdata \|= ACC_CODEC_CNTL_RD_CMD;
	100	regdata \|= CMD_NEW;
	101
	102	cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
1037593c	103	wait_till_cmd_acked(cs5535au, 50);
9b4ffa48 JK	104
	105	timeout = 50;
	106	do {
	107	val = cs_readl(cs5535au, ACC_CODEC_STATUS);
3e873174	108	if ((val & STS_NEW) && reg == (val >> 24))
9b4ffa48	109	break;
1037593c	110	udelay(1);
9b4ffa48 JK	111	} while (--timeout);
9b4ffa48 JK	112	if (!timeout)
40a4f7a0 JK	113	snd_printk(KERN_ERR "Failure reading codec reg 0x%x,"
40a4f7a0 JK	114	"Last value=0x%x\n", reg, val);
9b4ffa48	115
3e873174	116	return (unsigned short) val;
9b4ffa48 JK	117	}
9b4ffa48 JK	118
66f8df6b TI	119	static void snd_cs5535audio_codec_write(struct cs5535audio *cs5535au,
66f8df6b TI	120	unsigned short reg, unsigned short val)
9b4ffa48	121	{
3e873174	122	unsigned int regdata;
9b4ffa48	123
3e873174 TI	124	regdata = ((unsigned int) reg) << 24;
3e873174 TI	125	regdata \|= val;
9b4ffa48 JK	126	regdata &= CMD_MASK;
	127	regdata \|= CMD_NEW;
	128	regdata &= ACC_CODEC_CNTL_WR_CMD;
	129
	130	cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
	131	wait_till_cmd_acked(cs5535au, 50);
	132	}
	133
66f8df6b TI	134	static void snd_cs5535audio_ac97_codec_write(struct snd_ac97 *ac97,
66f8df6b TI	135	unsigned short reg, unsigned short val)
9b4ffa48	136	{
66f8df6b	137	struct cs5535audio *cs5535au = ac97->private_data;
9b4ffa48 JK	138	snd_cs5535audio_codec_write(cs5535au, reg, val);
	139	}
	140
66f8df6b TI	141	static unsigned short snd_cs5535audio_ac97_codec_read(struct snd_ac97 *ac97,
66f8df6b TI	142	unsigned short reg)
9b4ffa48	143	{
66f8df6b	144	struct cs5535audio *cs5535au = ac97->private_data;
9b4ffa48 JK	145	return snd_cs5535audio_codec_read(cs5535au, reg);
	146	}
	147
66f8df6b	148	static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
9b4ffa48	149	{
66f8df6b TI	150	struct snd_card *card = cs5535au->card;
	151	struct snd_ac97_bus *pbus;
	152	struct snd_ac97_template ac97;
9b4ffa48	153	int err;
66f8df6b	154	static struct snd_ac97_bus_ops ops = {
9b4ffa48 JK	155	.write = snd_cs5535audio_ac97_codec_write,
	156	.read = snd_cs5535audio_ac97_codec_read,
	157	};
	158
	159	if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
	160	return err;
	161
	162	memset(&ac97, 0, sizeof(ac97));
	163	ac97.scaps = AC97_SCAP_AUDIO\|AC97_SCAP_SKIP_MODEM;
	164	ac97.private_data = cs5535au;
	165	ac97.pci = cs5535au->pci;
9b4ffa48 JK	166
9b4ffa48 JK	167	if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
3e873174	168	snd_printk(KERN_ERR "mixer failed\n");
9b4ffa48 JK	169	return err;
	170	}
	171
9ac25594 JK	172	snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);
9ac25594 JK	173
9b4ffa48 JK	174	return 0;
	175	}
	176
66f8df6b	177	static void process_bm0_irq(struct cs5535audio *cs5535au)
9b4ffa48 JK	178	{
	179	u8 bm_stat;
	180	spin_lock(&cs5535au->reg_lock);
	181	bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS);
	182	spin_unlock(&cs5535au->reg_lock);
	183	if (bm_stat & EOP) {
66f8df6b	184	struct cs5535audio_dma *dma;
9b4ffa48 JK	185	dma = cs5535au->playback_substream->runtime->private_data;
	186	snd_pcm_period_elapsed(cs5535au->playback_substream);
	187	} else {
	188	snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n",
	189	bm_stat);
	190	}
	191	}
	192
66f8df6b	193	static void process_bm1_irq(struct cs5535audio *cs5535au)
9b4ffa48 JK	194	{
	195	u8 bm_stat;
	196	spin_lock(&cs5535au->reg_lock);
	197	bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS);
	198	spin_unlock(&cs5535au->reg_lock);
	199	if (bm_stat & EOP) {
66f8df6b	200	struct cs5535audio_dma *dma;
9b4ffa48 JK	201	dma = cs5535au->capture_substream->runtime->private_data;
	202	snd_pcm_period_elapsed(cs5535au->capture_substream);
	203	}
	204	}
	205
	206	static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
66f8df6b	207	struct pt_regs *regs)
9b4ffa48 JK	208	{
	209	u16 acc_irq_stat;
	210	u8 bm_stat;
	211	unsigned char count;
66f8df6b	212	struct cs5535audio *cs5535au = dev_id;
9b4ffa48 JK	213
	214	if (cs5535au == NULL)
	215	return IRQ_NONE;
	216
	217	acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS);
	218
	219	if (!acc_irq_stat)
	220	return IRQ_NONE;
3e873174 TI	221	for (count = 0; count < 10; count++) {
3e873174 TI	222	if (acc_irq_stat & (1 << count)) {
9b4ffa48 JK	223	switch (count) {
	224	case IRQ_STS:
	225	cs_readl(cs5535au, ACC_GPIO_STATUS);
	226	break;
	227	case WU_IRQ_STS:
	228	cs_readl(cs5535au, ACC_GPIO_STATUS);
	229	break;
	230	case BM0_IRQ_STS:
	231	process_bm0_irq(cs5535au);
	232	break;
	233	case BM1_IRQ_STS:
	234	process_bm1_irq(cs5535au);
	235	break;
	236	case BM2_IRQ_STS:
	237	bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
	238	break;
	239	case BM3_IRQ_STS:
	240	bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
	241	break;
	242	case BM4_IRQ_STS:
	243	bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
	244	break;
	245	case BM5_IRQ_STS:
	246	bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
	247	break;
	248	case BM6_IRQ_STS:
	249	bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
	250	break;
	251	case BM7_IRQ_STS:
	252	bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
	253	break;
	254	default:
	255	snd_printk(KERN_ERR "Unexpected irq src\n");
	256	break;
	257	}
	258	}
	259	}
	260	return IRQ_HANDLED;
	261	}
	262
66f8df6b	263	static int snd_cs5535audio_free(struct cs5535audio *cs5535au)
9b4ffa48 JK	264	{
	265	synchronize_irq(cs5535au->irq);
	266	pci_set_power_state(cs5535au->pci, 3);
	267
	268	if (cs5535au->irq >= 0)
	269	free_irq(cs5535au->irq, cs5535au);
	270
	271	pci_release_regions(cs5535au->pci);
	272	pci_disable_device(cs5535au->pci);
	273	kfree(cs5535au);
	274	return 0;
	275	}
	276
66f8df6b	277	static int snd_cs5535audio_dev_free(struct snd_device *device)
9b4ffa48	278	{
66f8df6b	279	struct cs5535audio *cs5535au = device->device_data;
9b4ffa48 JK	280	return snd_cs5535audio_free(cs5535au);
	281	}
	282
66f8df6b TI	283	static int __devinit snd_cs5535audio_create(struct snd_card *card,
	284	struct pci_dev *pci,
	285	struct cs5535audio **rcs5535au)
9b4ffa48	286	{
66f8df6b	287	struct cs5535audio *cs5535au;
9b4ffa48 JK	288
9b4ffa48 JK	289	int err;
66f8df6b	290	static struct snd_device_ops ops = {
9b4ffa48 JK	291	.dev_free = snd_cs5535audio_dev_free,
	292	};
	293
	294	*rcs5535au = NULL;
	295	if ((err = pci_enable_device(pci)) < 0)
	296	return err;
	297
	298	if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 \|\|
66f8df6b	299	pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
9b4ffa48 JK	300	printk(KERN_WARNING "unable to get 32bit dma\n");
	301	err = -ENXIO;
	302	goto pcifail;
	303	}
	304
	305	cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL);
	306	if (cs5535au == NULL) {
	307	err = -ENOMEM;
	308	goto pcifail;
	309	}
	310
	311	spin_lock_init(&cs5535au->reg_lock);
	312	cs5535au->card = card;
	313	cs5535au->pci = pci;
	314	cs5535au->irq = -1;
	315
	316	if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) {
	317	kfree(cs5535au);
	318	goto pcifail;
	319	}
	320
	321	cs5535au->port = pci_resource_start(pci, 0);
	322
	323	if (request_irq(pci->irq, snd_cs5535audio_interrupt,
65ca68b3	324	IRQF_DISABLED\|IRQF_SHARED, "CS5535 Audio", cs5535au)) {
9b4ffa48 JK	325	snd_printk("unable to grab IRQ %d\n", pci->irq);
	326	err = -EBUSY;
	327	goto sndfail;
	328	}
	329
	330	cs5535au->irq = pci->irq;
	331	pci_set_master(pci);
	332
	333	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
66f8df6b	334	cs5535au, &ops)) < 0)
9b4ffa48 JK	335	goto sndfail;
	336
	337	snd_card_set_dev(card, &pci->dev);
	338
	339	*rcs5535au = cs5535au;
	340	return 0;
	341
	342	sndfail: /* leave the device alive, just kill the snd */
	343	snd_cs5535audio_free(cs5535au);
	344	return err;
	345
	346	pcifail:
	347	pci_disable_device(pci);
	348	return err;
	349	}
	350
	351	static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
66f8df6b	352	const struct pci_device_id *pci_id)
9b4ffa48 JK	353	{
9b4ffa48 JK	354	static int dev;
66f8df6b TI	355	struct snd_card *card;
66f8df6b TI	356	struct cs5535audio *cs5535au;
9b4ffa48 JK	357	int err;
	358
	359	if (dev >= SNDRV_CARDS)
	360	return -ENODEV;
302e4c2f TI	361	if (!enable[dev]) {
	362	dev++;
	363	return -ENOENT;
	364	}
9b4ffa48	365
302e4c2f	366	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
9b4ffa48 JK	367	if (card == NULL)
	368	return -ENOMEM;
	369
	370	if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
	371	goto probefail_out;
	372
9ac25594 JK	373	card->private_data = cs5535au;
9ac25594 JK	374
9b4ffa48 JK	375	if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
	376	goto probefail_out;
	377
	378	if ((err = snd_cs5535audio_pcm(cs5535au)) < 0)
	379	goto probefail_out;
	380
	381	strcpy(card->driver, DRIVER_NAME);
	382
	383	strcpy(card->shortname, "CS5535 Audio");
	384	sprintf(card->longname, "%s %s at 0x%lx, irq %i",
	385	card->shortname, card->driver,
	386	cs5535au->port, cs5535au->irq);
	387
	388	if ((err = snd_card_register(card)) < 0)
	389	goto probefail_out;
	390
	391	pci_set_drvdata(pci, card);
	392	dev++;
	393	return 0;
	394
	395	probefail_out:
	396	snd_card_free(card);
	397	return err;
	398	}
	399
	400	static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
	401	{
	402	snd_card_free(pci_get_drvdata(pci));
	403	pci_set_drvdata(pci, NULL);
	404	}
	405
	406	static struct pci_driver driver = {
	407	.name = DRIVER_NAME,
	408	.id_table = snd_cs5535audio_ids,
	409	.probe = snd_cs5535audio_probe,
	410	.remove = __devexit_p(snd_cs5535audio_remove),
9ac25594 JK	411	#ifdef CONFIG_PM
	412	.suspend = snd_cs5535audio_suspend,
	413	.resume = snd_cs5535audio_resume,
	414	#endif
9b4ffa48 JK	415	};
	416
	417	static int __init alsa_card_cs5535audio_init(void)
	418	{
e329113c	419	return pci_register_driver(&driver);
9b4ffa48 JK	420	}
	421
	422	static void __exit alsa_card_cs5535audio_exit(void)
	423	{
	424	pci_unregister_driver(&driver);
	425	}
	426
	427	module_init(alsa_card_cs5535audio_init)
	428	module_exit(alsa_card_cs5535audio_exit)
	429
	430	MODULE_AUTHOR("Jaya Kumar");
	431	MODULE_LICENSE("GPL");
	432	MODULE_DESCRIPTION("CS5535 Audio");
	433	MODULE_SUPPORTED_DEVICE("CS5535 Audio");