2 * Driver for audio on multifunction CS5535 companion device
3 * Copyright (C) Jaya Kumar
5 * Based on Jaroslav Kysela and Takashi Iwai's examples.
6 * This work was sponsored by CIS(M) Sdn Bhd.
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.
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.
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
24 #include <linux/delay.h>
25 #include <linux/interrupt.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/moduleparam.h>
31 #include <sound/driver.h>
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"
41 #define DRIVER_NAME "cs5535audio"
44 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
;
45 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
;
46 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
;
48 static struct pci_device_id snd_cs5535audio_ids
[] = {
49 { PCI_VENDOR_ID_NS
, PCI_DEVICE_ID_NS_CS5535_AUDIO
, PCI_ANY_ID
,
50 PCI_ANY_ID
, 0, 0, 0, },
54 MODULE_DEVICE_TABLE(pci
, snd_cs5535audio_ids
);
56 static void wait_till_cmd_acked(cs5535audio_t
*cs5535au
, unsigned long timeout
)
60 tmp
= cs_readl(cs5535au
, ACC_CODEC_CNTL
);
66 snd_printk(KERN_ERR
"Failure writing to cs5535 codec\n");
69 static unsigned short snd_cs5535audio_codec_read(cs5535audio_t
*cs5535au
,
72 unsigned long regdata
;
73 unsigned long timeout
;
76 regdata
= ((unsigned long) reg
) << 24;
77 regdata
|= ACC_CODEC_CNTL_RD_CMD
;
80 cs_writel(cs5535au
, ACC_CODEC_CNTL
, regdata
);
81 wait_till_cmd_acked(cs5535au
, 500);
85 val
= cs_readl(cs5535au
, ACC_CODEC_STATUS
);
86 if ( (val
& STS_NEW
) &&
87 ((unsigned long) reg
== ((0xFF000000 & val
)>>24)) )
92 snd_printk(KERN_ERR
"Failure reading cs5535 codec\n");
94 return ((unsigned short) val
);
97 static void snd_cs5535audio_codec_write(cs5535audio_t
*cs5535au
,
98 unsigned short reg
, unsigned short val
)
100 unsigned long regdata
;
102 regdata
= ((unsigned long) reg
) << 24;
103 regdata
|= (unsigned long) val
;
106 regdata
&= ACC_CODEC_CNTL_WR_CMD
;
108 cs_writel(cs5535au
, ACC_CODEC_CNTL
, regdata
);
109 wait_till_cmd_acked(cs5535au
, 50);
112 static void snd_cs5535audio_ac97_codec_write(ac97_t
*ac97
,
113 unsigned short reg
, unsigned short val
)
115 cs5535audio_t
*cs5535au
= ac97
->private_data
;
116 snd_cs5535audio_codec_write(cs5535au
, reg
, val
);
119 static unsigned short snd_cs5535audio_ac97_codec_read(ac97_t
*ac97
,
122 cs5535audio_t
*cs5535au
= ac97
->private_data
;
123 return snd_cs5535audio_codec_read(cs5535au
, reg
);
126 static void snd_cs5535audio_mixer_free_ac97(ac97_t
*ac97
)
128 cs5535audio_t
*cs5535audio
= ac97
->private_data
;
129 cs5535audio
->ac97
= NULL
;
132 static int snd_cs5535audio_mixer(cs5535audio_t
*cs5535au
)
134 snd_card_t
*card
= cs5535au
->card
;
136 ac97_template_t ac97
;
138 static ac97_bus_ops_t ops
= {
139 .write
= snd_cs5535audio_ac97_codec_write
,
140 .read
= snd_cs5535audio_ac97_codec_read
,
143 if ((err
= snd_ac97_bus(card
, 0, &ops
, NULL
, &pbus
)) < 0)
146 memset(&ac97
, 0, sizeof(ac97
));
147 ac97
.scaps
= AC97_SCAP_AUDIO
|AC97_SCAP_SKIP_MODEM
;
148 ac97
.private_data
= cs5535au
;
149 ac97
.pci
= cs5535au
->pci
;
150 ac97
.private_free
= snd_cs5535audio_mixer_free_ac97
;
152 if ((err
= snd_ac97_mixer(pbus
, &ac97
, &cs5535au
->ac97
)) < 0) {
153 snd_printk("mixer failed\n");
160 static void process_bm0_irq(cs5535audio_t
*cs5535au
)
163 spin_lock(&cs5535au
->reg_lock
);
164 bm_stat
= cs_readb(cs5535au
, ACC_BM0_STATUS
);
165 spin_unlock(&cs5535au
->reg_lock
);
167 cs5535audio_dma_t
*dma
;
168 dma
= cs5535au
->playback_substream
->runtime
->private_data
;
169 snd_pcm_period_elapsed(cs5535au
->playback_substream
);
171 snd_printk(KERN_ERR
"unexpected bm0 irq src, bm_stat=%x\n",
176 static void process_bm1_irq(cs5535audio_t
*cs5535au
)
179 spin_lock(&cs5535au
->reg_lock
);
180 bm_stat
= cs_readb(cs5535au
, ACC_BM1_STATUS
);
181 spin_unlock(&cs5535au
->reg_lock
);
183 cs5535audio_dma_t
*dma
;
184 dma
= cs5535au
->capture_substream
->runtime
->private_data
;
185 snd_pcm_period_elapsed(cs5535au
->capture_substream
);
189 static irqreturn_t
snd_cs5535audio_interrupt(int irq
, void *dev_id
,
190 struct pt_regs
*regs
)
195 cs5535audio_t
*cs5535au
= dev_id
;
197 if (cs5535au
== NULL
)
200 acc_irq_stat
= cs_readw(cs5535au
, ACC_IRQ_STATUS
);
204 for (count
=0; count
< 10; count
++) {
205 if (acc_irq_stat
& (1<<count
)) {
208 cs_readl(cs5535au
, ACC_GPIO_STATUS
);
211 cs_readl(cs5535au
, ACC_GPIO_STATUS
);
214 process_bm0_irq(cs5535au
);
217 process_bm1_irq(cs5535au
);
220 bm_stat
= cs_readb(cs5535au
, ACC_BM2_STATUS
);
223 bm_stat
= cs_readb(cs5535au
, ACC_BM3_STATUS
);
226 bm_stat
= cs_readb(cs5535au
, ACC_BM4_STATUS
);
229 bm_stat
= cs_readb(cs5535au
, ACC_BM5_STATUS
);
232 bm_stat
= cs_readb(cs5535au
, ACC_BM6_STATUS
);
235 bm_stat
= cs_readb(cs5535au
, ACC_BM7_STATUS
);
238 snd_printk(KERN_ERR
"Unexpected irq src\n");
246 static int snd_cs5535audio_free(cs5535audio_t
*cs5535au
)
248 synchronize_irq(cs5535au
->irq
);
249 pci_set_power_state(cs5535au
->pci
, 3);
251 if (cs5535au
->irq
>= 0)
252 free_irq(cs5535au
->irq
, cs5535au
);
254 pci_release_regions(cs5535au
->pci
);
255 pci_disable_device(cs5535au
->pci
);
260 static int snd_cs5535audio_dev_free(snd_device_t
*device
)
262 cs5535audio_t
*cs5535au
= device
->device_data
;
263 return snd_cs5535audio_free(cs5535au
);
266 static int __devinit
snd_cs5535audio_create(snd_card_t
*card
,
268 cs5535audio_t
**rcs5535au
)
270 cs5535audio_t
*cs5535au
;
273 static snd_device_ops_t ops
= {
274 .dev_free
= snd_cs5535audio_dev_free
,
278 if ((err
= pci_enable_device(pci
)) < 0)
281 if (pci_set_dma_mask(pci
, DMA_32BIT_MASK
) < 0 ||
282 pci_set_consistent_dma_mask(pci
, DMA_32BIT_MASK
) < 0) {
283 printk(KERN_WARNING
"unable to get 32bit dma\n");
288 cs5535au
= kzalloc(sizeof(*cs5535au
), GFP_KERNEL
);
289 if (cs5535au
== NULL
) {
294 spin_lock_init(&cs5535au
->reg_lock
);
295 cs5535au
->card
= card
;
299 if ((err
= pci_request_regions(pci
, "CS5535 Audio")) < 0) {
304 cs5535au
->port
= pci_resource_start(pci
, 0);
306 if (request_irq(pci
->irq
, snd_cs5535audio_interrupt
,
307 SA_INTERRUPT
|SA_SHIRQ
, "CS5535 Audio", cs5535au
)) {
308 snd_printk("unable to grab IRQ %d\n", pci
->irq
);
313 cs5535au
->irq
= pci
->irq
;
316 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
,
317 cs5535au
, &ops
)) < 0)
320 snd_card_set_dev(card
, &pci
->dev
);
322 *rcs5535au
= cs5535au
;
325 sndfail
: /* leave the device alive, just kill the snd */
326 snd_cs5535audio_free(cs5535au
);
330 pci_disable_device(pci
);
334 static int __devinit
snd_cs5535audio_probe(struct pci_dev
*pci
,
335 const struct pci_device_id
*pci_id
)
339 cs5535audio_t
*cs5535au
;
342 if (dev
>= SNDRV_CARDS
)
349 card
= snd_card_new(index
[dev
], id
[dev
], THIS_MODULE
, 0);
353 if ((err
= snd_cs5535audio_create(card
, pci
, &cs5535au
)) < 0)
356 if ((err
= snd_cs5535audio_mixer(cs5535au
)) < 0)
359 if ((err
= snd_cs5535audio_pcm(cs5535au
)) < 0)
362 strcpy(card
->driver
, DRIVER_NAME
);
364 strcpy(card
->shortname
, "CS5535 Audio");
365 sprintf(card
->longname
, "%s %s at 0x%lx, irq %i",
366 card
->shortname
, card
->driver
,
367 cs5535au
->port
, cs5535au
->irq
);
369 if ((err
= snd_card_register(card
)) < 0)
372 pci_set_drvdata(pci
, card
);
381 static void __devexit
snd_cs5535audio_remove(struct pci_dev
*pci
)
383 snd_card_free(pci_get_drvdata(pci
));
384 pci_set_drvdata(pci
, NULL
);
387 static struct pci_driver driver
= {
389 .id_table
= snd_cs5535audio_ids
,
390 .probe
= snd_cs5535audio_probe
,
391 .remove
= __devexit_p(snd_cs5535audio_remove
),
394 static int __init
alsa_card_cs5535audio_init(void)
396 return pci_module_init(&driver
);
399 static void __exit
alsa_card_cs5535audio_exit(void)
401 pci_unregister_driver(&driver
);
404 module_init(alsa_card_cs5535audio_init
)
405 module_exit(alsa_card_cs5535audio_exit
)
407 MODULE_AUTHOR("Jaya Kumar");
408 MODULE_LICENSE("GPL");
409 MODULE_DESCRIPTION("CS5535 Audio");
410 MODULE_SUPPORTED_DEVICE("CS5535 Audio");