3 * Support for audio capture
4 * PCI function #1 of the cx2388x.
6 * (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
7 * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
8 * (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
9 * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
10 * Based on dummy.c by Jaroslav Kysela <perex@perex.cz>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/device.h>
30 #include <linux/interrupt.h>
31 #include <linux/vmalloc.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
36 #include <asm/delay.h>
37 #include <sound/core.h>
38 #include <sound/pcm.h>
39 #include <sound/pcm_params.h>
40 #include <sound/control.h>
41 #include <sound/initval.h>
42 #include <sound/tlv.h>
47 #define dprintk(level,fmt, arg...) if (debug >= level) \
48 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
50 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
51 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
53 /****************************************************************************
54 Data type declarations - Can be moded to a header file later
55 ****************************************************************************/
57 struct cx88_audio_dev {
58 struct cx88_core *core;
59 struct cx88_dmaqueue q;
67 struct snd_card *card;
72 unsigned int dma_size;
73 unsigned int period_size;
74 unsigned int num_periods;
76 struct videobuf_dmabuf *dma_risc;
78 struct cx88_buffer *buf;
80 struct snd_pcm_substream *substream;
82 typedef struct cx88_audio_dev snd_cx88_card_t;
86 /****************************************************************************
87 Module global static vars
88 ****************************************************************************/
90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
92 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
94 module_param_array(enable, bool, NULL, 0444);
95 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
97 module_param_array(index, int, NULL, 0444);
98 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
101 /****************************************************************************
103 ****************************************************************************/
105 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
106 MODULE_AUTHOR("Ricardo Cerqueira");
107 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
108 MODULE_LICENSE("GPL");
109 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
111 "{{Conexant,23883}");
112 static unsigned int debug;
113 module_param(debug,int,0644);
114 MODULE_PARM_DESC(debug,"enable debug messages");
116 /****************************************************************************
117 Module specific funtions
118 ****************************************************************************/
121 * BOARD Specific: Sets audio DMA
124 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
126 struct cx88_buffer *buf = chip->buf;
127 struct cx88_core *core=chip->core;
128 struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
130 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
131 cx_clear(MO_AUD_DMACNTRL, 0x11);
133 /* setup fifo + format - out channel */
134 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
137 cx_write(MO_AUDD_LNGTH, buf->bpl);
140 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
141 atomic_set(&chip->count, 0);
143 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
144 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
145 chip->num_periods, buf->bpl * chip->num_periods);
147 /* Enables corresponding bits at AUD_INT_STAT */
148 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
149 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
151 /* Clean any pending interrupt bits already set */
152 cx_write(MO_AUD_INTSTAT, ~0);
154 /* enable audio irqs */
155 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
158 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
159 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
162 cx88_sram_channel_dump(chip->core, audio_ch);
168 * BOARD Specific: Resets audio DMA
170 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
172 struct cx88_core *core=chip->core;
173 dprintk(1, "Stopping audio DMA\n");
176 cx_clear(MO_AUD_DMACNTRL, 0x11);
179 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
180 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
181 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
184 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
189 #define MAX_IRQ_LOOP 50
192 * BOARD Specific: IRQ dma bits
194 static char *cx88_aud_irqs[32] = {
195 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
197 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
199 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
201 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
203 "opc_err", "par_err", "rip_err", /* 16-18 */
204 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
208 * BOARD Specific: Threats IRQ audio specific calls
210 static void cx8801_aud_irq(snd_cx88_card_t *chip)
212 struct cx88_core *core = chip->core;
215 status = cx_read(MO_AUD_INTSTAT);
216 mask = cx_read(MO_AUD_INTMSK);
217 if (0 == (status & mask))
219 cx_write(MO_AUD_INTSTAT, status);
220 if (debug > 1 || (status & mask & ~0xff))
221 cx88_print_irqbits(core->name, "irq aud",
222 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
224 /* risc op code error */
225 if (status & AUD_INT_OPC_ERR) {
226 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
227 cx_clear(MO_AUD_DMACNTRL, 0x11);
228 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
230 if (status & AUD_INT_DN_SYNC) {
231 dprintk(1, "Downstream sync error\n");
232 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
235 /* risc1 downstream */
236 if (status & AUD_INT_DN_RISCI1) {
237 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
238 snd_pcm_period_elapsed(chip->substream);
240 /* FIXME: Any other status should deserve a special handling? */
244 * BOARD Specific: Handles IRQ calls
246 static irqreturn_t cx8801_irq(int irq, void *dev_id)
248 snd_cx88_card_t *chip = dev_id;
249 struct cx88_core *core = chip->core;
251 int loop, handled = 0;
253 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
254 status = cx_read(MO_PCI_INTSTAT) &
255 (core->pci_irqmask | PCI_INT_AUDINT);
258 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
259 loop, MAX_IRQ_LOOP, status);
261 cx_write(MO_PCI_INTSTAT, status);
263 if (status & core->pci_irqmask)
264 cx88_core_irq(core, status);
265 if (status & PCI_INT_AUDINT)
266 cx8801_aud_irq(chip);
269 if (MAX_IRQ_LOOP == loop) {
271 "%s/1: IRQ loop detected, disabling interrupts\n",
273 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
277 return IRQ_RETVAL(handled);
281 static int dsp_buffer_free(snd_cx88_card_t *chip)
283 BUG_ON(!chip->dma_size);
285 dprintk(2,"Freeing buffer\n");
286 videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
287 videobuf_dma_free(chip->dma_risc);
288 btcx_riscmem_free(chip->pci,&chip->buf->risc);
291 chip->dma_risc = NULL;
297 /****************************************************************************
299 ****************************************************************************/
302 * Digital hardware definition
304 #define DEFAULT_FIFO_SIZE 4096
305 static struct snd_pcm_hardware snd_cx88_digital_hw = {
306 .info = SNDRV_PCM_INFO_MMAP |
307 SNDRV_PCM_INFO_INTERLEAVED |
308 SNDRV_PCM_INFO_BLOCK_TRANSFER |
309 SNDRV_PCM_INFO_MMAP_VALID,
310 .formats = SNDRV_PCM_FMTBIT_S16_LE,
312 .rates = SNDRV_PCM_RATE_48000,
317 /* Analog audio output will be full of clicks and pops if there
318 are not exactly four lines in the SRAM FIFO buffer. */
319 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
320 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
323 .buffer_bytes_max = (1024*1024),
327 * audio pcm capture open callback
329 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
331 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
332 struct snd_pcm_runtime *runtime = substream->runtime;
336 printk(KERN_ERR "BUG: cx88 can't find device struct."
337 " Can't proceed with open\n");
341 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
345 chip->substream = substream;
347 runtime->hw = snd_cx88_digital_hw;
349 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
350 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
351 bpl &= ~7; /* must be multiple of 8 */
352 runtime->hw.period_bytes_min = bpl;
353 runtime->hw.period_bytes_max = bpl;
358 dprintk(1,"Error opening PCM!\n");
363 * audio close callback
365 static int snd_cx88_close(struct snd_pcm_substream *substream)
373 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
374 struct snd_pcm_hw_params * hw_params)
376 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
377 struct videobuf_dmabuf *dma;
379 struct cx88_buffer *buf;
382 if (substream->runtime->dma_area) {
383 dsp_buffer_free(chip);
384 substream->runtime->dma_area = NULL;
387 chip->period_size = params_period_bytes(hw_params);
388 chip->num_periods = params_periods(hw_params);
389 chip->dma_size = chip->period_size * params_periods(hw_params);
391 BUG_ON(!chip->dma_size);
392 BUG_ON(chip->num_periods & (chip->num_periods-1));
394 buf = videobuf_sg_alloc(sizeof(*buf));
398 buf->vb.memory = V4L2_MEMORY_MMAP;
399 buf->vb.field = V4L2_FIELD_NONE;
400 buf->vb.width = chip->period_size;
401 buf->bpl = chip->period_size;
402 buf->vb.height = chip->num_periods;
403 buf->vb.size = chip->dma_size;
405 dma = videobuf_to_dma(&buf->vb);
406 videobuf_dma_init(dma);
407 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
408 (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
412 ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
416 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
417 buf->vb.width, buf->vb.height, 1);
421 /* Loop back to start of program */
422 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
423 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
425 buf->vb.state = VIDEOBUF_PREPARED;
428 chip->dma_risc = dma;
430 substream->runtime->dma_area = chip->dma_risc->vmalloc;
431 substream->runtime->dma_bytes = chip->dma_size;
432 substream->runtime->dma_addr = 0;
443 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
446 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
448 if (substream->runtime->dma_area) {
449 dsp_buffer_free(chip);
450 substream->runtime->dma_area = NULL;
459 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
467 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
469 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
472 /* Local interrupts are already disabled by ALSA */
473 spin_lock(&chip->reg_lock);
476 case SNDRV_PCM_TRIGGER_START:
477 err=_cx88_start_audio_dma(chip);
479 case SNDRV_PCM_TRIGGER_STOP:
480 err=_cx88_stop_audio_dma(chip);
487 spin_unlock(&chip->reg_lock);
495 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
497 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
498 struct snd_pcm_runtime *runtime = substream->runtime;
501 count = atomic_read(&chip->count);
503 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
504 // count, new, count & (runtime->periods-1),
505 // runtime->period_size * (count & (runtime->periods-1)));
506 return runtime->period_size * (count & (runtime->periods-1));
510 * page callback (needed for mmap)
512 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
513 unsigned long offset)
515 void *pageptr = substream->runtime->dma_area + offset;
516 return vmalloc_to_page(pageptr);
522 static struct snd_pcm_ops snd_cx88_pcm_ops = {
523 .open = snd_cx88_pcm_open,
524 .close = snd_cx88_close,
525 .ioctl = snd_pcm_lib_ioctl,
526 .hw_params = snd_cx88_hw_params,
527 .hw_free = snd_cx88_hw_free,
528 .prepare = snd_cx88_prepare,
529 .trigger = snd_cx88_card_trigger,
530 .pointer = snd_cx88_pointer,
531 .page = snd_cx88_page,
535 * create a PCM device
537 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
542 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
545 pcm->private_data = chip;
546 strcpy(pcm->name, name);
547 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
552 /****************************************************************************
554 ****************************************************************************/
555 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
556 struct snd_ctl_elem_info *info)
558 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
560 info->value.integer.min = 0;
561 info->value.integer.max = 0x3f;
566 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
567 struct snd_ctl_elem_value *value)
569 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
570 struct cx88_core *core=chip->core;
571 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
572 bal = cx_read(AUD_BAL_CTL);
574 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
576 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
581 /* OK - TODO: test it */
582 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
583 struct snd_ctl_elem_value *value)
585 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
586 struct cx88_core *core=chip->core;
587 int left, right, v, b;
591 left = value->value.integer.value[0] & 0x3f;
592 right = value->value.integer.value[1] & 0x3f;
600 /* Do we really know this will always be called with IRQs on? */
601 spin_lock_irq(&chip->reg_lock);
602 old = cx_read(AUD_VOL_CTL);
603 if (v != (old & 0x3f)) {
604 cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
607 if (cx_read(AUD_BAL_CTL) != b) {
608 cx_write(AUD_BAL_CTL, b);
611 spin_unlock_irq(&chip->reg_lock);
616 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
618 static struct snd_kcontrol_new snd_cx88_volume = {
619 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
620 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
621 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
622 .name = "Playback Volume",
623 .info = snd_cx88_volume_info,
624 .get = snd_cx88_volume_get,
625 .put = snd_cx88_volume_put,
626 .tlv.p = snd_cx88_db_scale,
629 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
630 struct snd_ctl_elem_value *value)
632 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
633 struct cx88_core *core = chip->core;
634 u32 bit = kcontrol->private_value;
636 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
640 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
641 struct snd_ctl_elem_value *value)
643 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
644 struct cx88_core *core = chip->core;
645 u32 bit = kcontrol->private_value;
649 spin_lock_irq(&chip->reg_lock);
650 vol = cx_read(AUD_VOL_CTL);
651 if (value->value.integer.value[0] != !(vol & bit)) {
653 cx_write(AUD_VOL_CTL, vol);
656 spin_unlock_irq(&chip->reg_lock);
660 static struct snd_kcontrol_new snd_cx88_dac_switch = {
661 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
662 .name = "Playback Switch",
663 .info = snd_ctl_boolean_mono_info,
664 .get = snd_cx88_switch_get,
665 .put = snd_cx88_switch_put,
666 .private_value = (1<<8),
669 static struct snd_kcontrol_new snd_cx88_source_switch = {
670 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
671 .name = "Capture Switch",
672 .info = snd_ctl_boolean_mono_info,
673 .get = snd_cx88_switch_get,
674 .put = snd_cx88_switch_put,
675 .private_value = (1<<6),
678 /****************************************************************************
679 Basic Flow for Sound Devices
680 ****************************************************************************/
683 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
684 * Only boards with eeprom and byte 1 at eeprom=1 have it
687 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
688 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
689 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
692 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
695 * Chip-specific destructor
698 static int snd_cx88_free(snd_cx88_card_t *chip)
702 free_irq(chip->irq, chip);
704 cx88_core_put(chip->core,chip->pci);
706 pci_disable_device(chip->pci);
711 * Component Destructor
713 static void snd_cx88_dev_free(struct snd_card * card)
715 snd_cx88_card_t *chip = card->private_data;
722 * Alsa Constructor - Component probe
726 static int __devinit snd_cx88_create(struct snd_card *card,
728 snd_cx88_card_t **rchip)
730 snd_cx88_card_t *chip;
731 struct cx88_core *core;
733 unsigned char pci_lat;
737 err = pci_enable_device(pci);
743 chip = (snd_cx88_card_t *) card->private_data;
745 core = cx88_core_get(pci);
751 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
752 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
754 cx88_core_put(core,pci);
763 spin_lock_init(&chip->reg_lock);
768 err = request_irq(chip->pci->irq, cx8801_irq,
769 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
771 dprintk(0, "%s: can't get IRQ %d\n",
772 chip->core->name, chip->pci->irq);
777 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
779 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
780 "latency: %d, mmio: 0x%llx\n", core->name, devno,
781 pci_name(pci), pci->revision, pci->irq,
782 pci_lat, (unsigned long long)pci_resource_start(pci,0));
784 chip->irq = pci->irq;
785 synchronize_irq(chip->irq);
787 snd_card_set_dev(card, &pci->dev);
794 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
795 const struct pci_device_id *pci_id)
797 struct snd_card *card;
798 snd_cx88_card_t *chip;
801 if (devno >= SNDRV_CARDS)
804 if (!enable[devno]) {
809 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
810 sizeof(snd_cx88_card_t), &card);
814 card->private_free = snd_cx88_dev_free;
816 err = snd_cx88_create(card, pci, &chip);
820 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
824 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
827 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
830 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
834 strcpy (card->driver, "CX88x");
835 sprintf(card->shortname, "Conexant CX%x", pci->device);
836 sprintf(card->longname, "%s at %#llx",
837 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
838 strcpy (card->mixername, "CX88");
840 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
843 err = snd_card_register(card);
846 pci_set_drvdata(pci,card);
858 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
860 struct cx88_audio_dev *card = pci_get_drvdata(pci);
862 snd_card_free((void *)card);
864 pci_set_drvdata(pci, NULL);
870 * PCI driver definition
873 static struct pci_driver cx88_audio_pci_driver = {
874 .name = "cx88_audio",
875 .id_table = cx88_audio_pci_tbl,
876 .probe = cx88_audio_initdev,
877 .remove = __devexit_p(cx88_audio_finidev),
880 /****************************************************************************
882 ****************************************************************************/
887 static int __init cx88_audio_init(void)
889 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
890 (CX88_VERSION_CODE >> 16) & 0xff,
891 (CX88_VERSION_CODE >> 8) & 0xff,
892 CX88_VERSION_CODE & 0xff);
894 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
895 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
897 return pci_register_driver(&cx88_audio_pci_driver);
903 static void __exit cx88_audio_fini(void)
905 pci_unregister_driver(&cx88_audio_pci_driver);
908 module_init(cx88_audio_init);
909 module_exit(cx88_audio_fini);
911 /* ----------------------------------------------------------- */