[net-next-2.6.git] / sound / pci / cs5530.c

/*
 * cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
 *
 * 	(C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
 *	(C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
 *
 * This driver was ported (shamelessly ripped ;) from oss/kahlua.c but I did
 * mess with it a bit. The chip seems to have to have trouble with full duplex
 * mode. If we're recording in 8bit 8000kHz, say, and we then attempt to
 * simultaneously play back audio at 16bit 44100kHz, the device actually plays
 * back in the same format in which it is capturing. By forcing the chip to
 * always play/capture in 16/44100, we can let alsa-lib convert the samples and
 * that way we can hack up some full duplex audio. 
 * 
 * XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems.
 * The older version (VSA1) provides fairly good soundblaster emulation
 * although there are a couple of bugs: large DMA buffers break record,
 * and the MPU event handling seems suspect. VSA2 allows the native driver
 * to control the AC97 audio engine directly and requires a different driver.
 *
 * Thanks to National Semiconductor for providing the needed information
 * on the XpressAudio(tm) internals.
 *
 * 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, 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.
 *
 * TO DO:
 *	Investigate whether we can portably support Cognac (5520) in the
 *	same manner.
 */

#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/initval.h>

MODULE_AUTHOR("Ash Willis");
MODULE_DESCRIPTION("CS5530 Audio");
MODULE_LICENSE("GPL");

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;

struct snd_cs5530 {
	struct snd_card *card;
	struct pci_dev *pci;
	struct snd_sb *sb;
	unsigned long pci_base;
};

static DEFINE_PCI_DEVICE_TABLE(snd_cs5530_ids) = {
	{PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
							PCI_ANY_ID, 0, 0},
	{0,}
};

MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);

static int snd_cs5530_free(struct snd_cs5530 *chip)
{
	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);
	kfree(chip);
	return 0;
}

static int snd_cs5530_dev_free(struct snd_device *device)
{
	struct snd_cs5530 *chip = device->device_data;
	return snd_cs5530_free(chip);
}

static void __devexit snd_cs5530_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

static u8 __devinit snd_cs5530_mixer_read(unsigned long io, u8 reg)
{
	outb(reg, io + 4);
	udelay(20);
	reg = inb(io + 5);
	udelay(20);
	return reg;
}

static int __devinit snd_cs5530_create(struct snd_card *card,
				       struct pci_dev *pci,
				       struct snd_cs5530 **rchip)
{
	struct snd_cs5530 *chip;
	unsigned long sb_base;
	u8 irq, dma8, dma16 = 0;
	u16 map;
	void __iomem *mem;
	int err;

	static struct snd_device_ops ops = {
		.dev_free = snd_cs5530_dev_free,
	};
	*rchip = NULL;

	err = pci_enable_device(pci);
 	if (err < 0)
		return err;

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (chip == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}

	chip->card = card;
	chip->pci = pci;

	err = pci_request_regions(pci, "CS5530");
	if (err < 0) {
		kfree(chip); 
		pci_disable_device(pci);
		return err;
	}
	chip->pci_base = pci_resource_start(pci, 0);

	mem = pci_ioremap_bar(pci, 0);
	if (mem == NULL) {
		kfree(chip);
		pci_disable_device(pci);
		return -EBUSY;
	}

	map = readw(mem + 0x18);
	iounmap(mem);

	/* Map bits
		0:1	* 0x20 + 0x200 = sb base
		2	sb enable
		3	adlib enable
		5	MPU enable 0x330
		6	MPU enable 0x300

	   The other bits may be used internally so must be masked */

	sb_base = 0x220 + 0x20 * (map & 3);

	if (map & (1<<2))
		printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base);
	else {
		printk(KERN_ERR "Could not find XpressAudio!\n");
		snd_cs5530_free(chip);
		return -ENODEV;
	}

	if (map & (1<<5))
		printk(KERN_INFO "CS5530: MPU at 0x300\n");
	else if (map & (1<<6))
		printk(KERN_INFO "CS5530: MPU at 0x330\n");

	irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
	dma8 = snd_cs5530_mixer_read(sb_base, 0x81);

	if (dma8 & 0x20)
		dma16 = 5;
	else if (dma8 & 0x40)
		dma16 = 6;
	else if (dma8 & 0x80)
		dma16 = 7;
	else {
		printk(KERN_ERR "CS5530: No 16bit DMA enabled\n");
		snd_cs5530_free(chip);
		return -ENODEV;
	}

	if (dma8 & 0x01)
		dma8 = 0;
	else if (dma8 & 02)
		dma8 = 1;
	else if (dma8 & 0x08)
		dma8 = 3;
	else {
		printk(KERN_ERR "CS5530: No 8bit DMA enabled\n");
		snd_cs5530_free(chip);
		return -ENODEV;
	}

	if (irq & 1)
		irq = 9;
	else if (irq & 2)
		irq = 5;
	else if (irq & 4)
		irq = 7;
	else if (irq & 8)
		irq = 10;
	else {
		printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n");
		snd_cs5530_free(chip);
		return -ENODEV;
	}

	printk(KERN_INFO "CS5530: IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8, 
									dma16);

	err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
						dma16, SB_HW_CS5530, &chip->sb);
	if (err < 0) {
		printk(KERN_ERR "CS5530: Could not create SoundBlaster\n");
		snd_cs5530_free(chip);
		return err;
	}

	err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm);
	if (err < 0) {
		printk(KERN_ERR "CS5530: Could not create PCM\n");
		snd_cs5530_free(chip);
		return err;
	}

	err = snd_sbmixer_new(chip->sb);
	if (err < 0) {
		printk(KERN_ERR "CS5530: Could not create Mixer\n");
		snd_cs5530_free(chip);
		return err;
	}

	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
	if (err < 0) {
		snd_cs5530_free(chip);
		return err;
	}

	snd_card_set_dev(card, &pci->dev);
	*rchip = chip;
	return 0;
}

static int __devinit snd_cs5530_probe(struct pci_dev *pci,
					const struct pci_device_id *pci_id)
{
	static int dev;
	struct snd_card *card;
	struct snd_cs5530 *chip = NULL;
	int err;

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

	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);

	if (err < 0)
		return err;

	err = snd_cs5530_create(card, pci, &chip);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}

	strcpy(card->driver, "CS5530");
	strcpy(card->shortname, "CS5530 Audio");
	sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);

	err = snd_card_register(card);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}
	pci_set_drvdata(pci, card);
	dev++;
	return 0;
}

static struct pci_driver driver = {
	.name = "CS5530_Audio",
	.id_table = snd_cs5530_ids,
	.probe = snd_cs5530_probe,
	.remove = __devexit_p(snd_cs5530_remove),
};

static int __init alsa_card_cs5530_init(void)
{
	return pci_register_driver(&driver);
}

static void __exit alsa_card_cs5530_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_cs5530_init)
module_exit(alsa_card_cs5530_exit)
Commit	Line	Data
621887ae TI	1	/*
	2	* cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
	3	*
	4	* (C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
2f1e593d	5	* (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
621887ae TI	6	*
	7	* This driver was ported (shamelessly ripped ;) from oss/kahlua.c but I did
	8	* mess with it a bit. The chip seems to have to have trouble with full duplex
	9	* mode. If we're recording in 8bit 8000kHz, say, and we then attempt to
	10	* simultaneously play back audio at 16bit 44100kHz, the device actually plays
	11	* back in the same format in which it is capturing. By forcing the chip to
	12	* always play/capture in 16/44100, we can let alsa-lib convert the samples and
	13	* that way we can hack up some full duplex audio.
	14	*
	15	* XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems.
	16	* The older version (VSA1) provides fairly good soundblaster emulation
	17	* although there are a couple of bugs: large DMA buffers break record,
	18	* and the MPU event handling seems suspect. VSA2 allows the native driver
	19	* to control the AC97 audio engine directly and requires a different driver.
	20	*
	21	* Thanks to National Semiconductor for providing the needed information
	22	* on the XpressAudio(tm) internals.
	23	*
	24	* This program is free software; you can redistribute it and/or modify it
	25	* under the terms of the GNU General Public License as published by the
	26	* Free Software Foundation; either version 2, or (at your option) any
	27	* later version.
	28	*
	29	* This program is distributed in the hope that it will be useful, but
	30	* WITHOUT ANY WARRANTY; without even the implied warranty of
	31	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	32	* General Public License for more details.
	33	*
	34	* TO DO:
	35	* Investigate whether we can portably support Cognac (5520) in the
	36	* same manner.
	37	*/
	38
621887ae TI	39	#include <linux/delay.h>
	40	#include <linux/moduleparam.h>
	41	#include <linux/pci.h>
5a0e3ad6	42	#include <linux/slab.h>
621887ae TI	43	#include <sound/core.h>
	44	#include <sound/sb.h>
	45	#include <sound/initval.h>
	46
	47	MODULE_AUTHOR("Ash Willis");
	48	MODULE_DESCRIPTION("CS5530 Audio");
	49	MODULE_LICENSE("GPL");
	50
	51	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
	52	static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
	53	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
	54
	55	struct snd_cs5530 {
	56	struct snd_card *card;
	57	struct pci_dev *pci;
	58	struct snd_sb *sb;
	59	unsigned long pci_base;
	60	};
	61
cebe41d4	62	static DEFINE_PCI_DEVICE_TABLE(snd_cs5530_ids) = {
621887ae TI	63	{PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
	64	PCI_ANY_ID, 0, 0},
	65	{0,}
	66	};
	67
	68	MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
	69
	70	static int snd_cs5530_free(struct snd_cs5530 *chip)
	71	{
	72	pci_release_regions(chip->pci);
	73	pci_disable_device(chip->pci);
	74	kfree(chip);
	75	return 0;
	76	}
	77
	78	static int snd_cs5530_dev_free(struct snd_device *device)
	79	{
	80	struct snd_cs5530 *chip = device->device_data;
	81	return snd_cs5530_free(chip);
	82	}
	83
	84	static void __devexit snd_cs5530_remove(struct pci_dev *pci)
	85	{
	86	snd_card_free(pci_get_drvdata(pci));
	87	pci_set_drvdata(pci, NULL);
	88	}
	89
	90	static u8 __devinit snd_cs5530_mixer_read(unsigned long io, u8 reg)
	91	{
	92	outb(reg, io + 4);
	93	udelay(20);
	94	reg = inb(io + 5);
	95	udelay(20);
	96	return reg;
	97	}
	98
	99	static int __devinit snd_cs5530_create(struct snd_card *card,
	100	struct pci_dev *pci,
	101	struct snd_cs5530 **rchip)
	102	{
	103	struct snd_cs5530 *chip;
	104	unsigned long sb_base;
	105	u8 irq, dma8, dma16 = 0;
	106	u16 map;
	107	void __iomem *mem;
	108	int err;
	109
	110	static struct snd_device_ops ops = {
	111	.dev_free = snd_cs5530_dev_free,
	112	};
	113	*rchip = NULL;
	114
	115	err = pci_enable_device(pci);
	116	if (err < 0)
	117	return err;
	118
	119	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	120	if (chip == NULL) {
	121	pci_disable_device(pci);
	122	return -ENOMEM;
	123	}
	124
	125	chip->card = card;
	126	chip->pci = pci;
127
128	err = pci_request_regions(pci, "CS5530");
129	if (err < 0) {
130	kfree(chip);
131	pci_disable_device(pci);
132	return err;
133	}
134	chip->pci_base = pci_resource_start(pci, 0);
135
2f5ad54e	136	mem = pci_ioremap_bar(pci, 0);
621887ae TI	137	if (mem == NULL) {
	138	kfree(chip);
	139	pci_disable_device(pci);
	140	return -EBUSY;
	141	}
	142
	143	map = readw(mem + 0x18);
	144	iounmap(mem);
	145
	146	/* Map bits
	147	0:1 * 0x20 + 0x200 = sb base
	148	2 sb enable
	149	3 adlib enable
	150	5 MPU enable 0x330
	151	6 MPU enable 0x300
	152
	153	The other bits may be used internally so must be masked */
	154
	155	sb_base = 0x220 + 0x20 * (map & 3);
	156
	157	if (map & (1<<2))
	158	printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base);
	159	else {
	160	printk(KERN_ERR "Could not find XpressAudio!\n");
	161	snd_cs5530_free(chip);
	162	return -ENODEV;
	163	}
	164
	165	if (map & (1<<5))
	166	printk(KERN_INFO "CS5530: MPU at 0x300\n");
	167	else if (map & (1<<6))
	168	printk(KERN_INFO "CS5530: MPU at 0x330\n");
	169
	170	irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
	171	dma8 = snd_cs5530_mixer_read(sb_base, 0x81);
	172
	173	if (dma8 & 0x20)
	174	dma16 = 5;
	175	else if (dma8 & 0x40)
	176	dma16 = 6;
	177	else if (dma8 & 0x80)
	178	dma16 = 7;
	179	else {
	180	printk(KERN_ERR "CS5530: No 16bit DMA enabled\n");
	181	snd_cs5530_free(chip);
	182	return -ENODEV;
	183	}
	184
	185	if (dma8 & 0x01)
	186	dma8 = 0;
	187	else if (dma8 & 02)
	188	dma8 = 1;
	189	else if (dma8 & 0x08)
	190	dma8 = 3;
	191	else {
	192	printk(KERN_ERR "CS5530: No 8bit DMA enabled\n");
	193	snd_cs5530_free(chip);
	194	return -ENODEV;
	195	}
	196
	197	if (irq & 1)
	198	irq = 9;
	199	else if (irq & 2)
	200	irq = 5;
201	else if (irq & 4)
202	irq = 7;
203	else if (irq & 8)
204	irq = 10;
205	else {
206	printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n");
207	snd_cs5530_free(chip);
208	return -ENODEV;
209	}
210
211	printk(KERN_INFO "CS5530: IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8,
212	dma16);
213
214	err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
215	dma16, SB_HW_CS5530, &chip->sb);
216	if (err < 0) {
217	printk(KERN_ERR "CS5530: Could not create SoundBlaster\n");
218	snd_cs5530_free(chip);
219	return err;
220	}
221
222	err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm);
223	if (err < 0) {
224	printk(KERN_ERR "CS5530: Could not create PCM\n");
225	snd_cs5530_free(chip);
226	return err;
227	}
228
229	err = snd_sbmixer_new(chip->sb);
230	if (err < 0) {
231	printk(KERN_ERR "CS5530: Could not create Mixer\n");
232	snd_cs5530_free(chip);
233	return err;
234	}
235
236	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
237	if (err < 0) {
238	snd_cs5530_free(chip);
239	return err;
240	}
241
242	snd_card_set_dev(card, &pci->dev);
243	*rchip = chip;
244	return 0;
245	}
246
247	static int __devinit snd_cs5530_probe(struct pci_dev *pci,
248	const struct pci_device_id *pci_id)
249	{
250	static int dev;
251	struct snd_card *card;
252	struct snd_cs5530 *chip = NULL;
253	int err;
254
255	if (dev >= SNDRV_CARDS)
256	return -ENODEV;
257	if (!enable[dev]) {
258	dev++;
259	return -ENOENT;
260	}
261
e58de7ba	262	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
621887ae	263
e58de7ba TI	264	if (err < 0)
e58de7ba TI	265	return err;
621887ae TI	266
	267	err = snd_cs5530_create(card, pci, &chip);
	268	if (err < 0) {
	269	snd_card_free(card);
	270	return err;
	271	}
	272
	273	strcpy(card->driver, "CS5530");
	274	strcpy(card->shortname, "CS5530 Audio");
	275	sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
	276
	277	err = snd_card_register(card);
	278	if (err < 0) {
	279	snd_card_free(card);
	280	return err;
	281	}
	282	pci_set_drvdata(pci, card);
	283	dev++;
	284	return 0;
	285	}
	286
	287	static struct pci_driver driver = {
	288	.name = "CS5530_Audio",
	289	.id_table = snd_cs5530_ids,
	290	.probe = snd_cs5530_probe,
	291	.remove = __devexit_p(snd_cs5530_remove),
	292	};
	293
	294	static int __init alsa_card_cs5530_init(void)
	295	{
	296	return pci_register_driver(&driver);
	297	}
	298
	299	static void __exit alsa_card_cs5530_exit(void)
	300	{
	301	pci_unregister_driver(&driver);
	302	}
	303
	304	module_init(alsa_card_cs5530_init)
	305	module_exit(alsa_card_cs5530_exit)
	306