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_buffer {
59 struct btcx_riscmem risc;
60 struct videobuf_dmabuf dma;
63 struct cx88_audio_dev {
64 struct cx88_core *core;
65 struct cx88_dmaqueue q;
73 struct snd_card *card;
78 unsigned int dma_size;
79 unsigned int period_size;
80 unsigned int num_periods;
82 struct videobuf_dmabuf *dma_risc;
84 struct cx88_audio_buffer *buf;
86 struct snd_pcm_substream *substream;
88 typedef struct cx88_audio_dev snd_cx88_card_t;
92 /****************************************************************************
93 Module global static vars
94 ****************************************************************************/
96 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
97 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
98 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
100 module_param_array(enable, bool, NULL, 0444);
101 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
103 module_param_array(index, int, NULL, 0444);
104 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
107 /****************************************************************************
109 ****************************************************************************/
111 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
112 MODULE_AUTHOR("Ricardo Cerqueira");
113 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
114 MODULE_LICENSE("GPL");
115 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
117 "{{Conexant,23883}");
118 static unsigned int debug;
119 module_param(debug,int,0644);
120 MODULE_PARM_DESC(debug,"enable debug messages");
122 /****************************************************************************
123 Module specific funtions
124 ****************************************************************************/
127 * BOARD Specific: Sets audio DMA
130 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
132 struct cx88_audio_buffer *buf = chip->buf;
133 struct cx88_core *core=chip->core;
134 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
136 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
137 cx_clear(MO_AUD_DMACNTRL, 0x11);
139 /* setup fifo + format - out channel */
140 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
143 cx_write(MO_AUDD_LNGTH, buf->bpl);
146 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
147 atomic_set(&chip->count, 0);
149 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
150 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
151 chip->num_periods, buf->bpl * chip->num_periods);
153 /* Enables corresponding bits at AUD_INT_STAT */
154 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
155 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
157 /* Clean any pending interrupt bits already set */
158 cx_write(MO_AUD_INTSTAT, ~0);
160 /* enable audio irqs */
161 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
164 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
165 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
168 cx88_sram_channel_dump(chip->core, audio_ch);
174 * BOARD Specific: Resets audio DMA
176 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
178 struct cx88_core *core=chip->core;
179 dprintk(1, "Stopping audio DMA\n");
182 cx_clear(MO_AUD_DMACNTRL, 0x11);
185 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
186 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
187 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
190 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
195 #define MAX_IRQ_LOOP 50
198 * BOARD Specific: IRQ dma bits
200 static const char *cx88_aud_irqs[32] = {
201 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
203 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
205 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
207 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
209 "opc_err", "par_err", "rip_err", /* 16-18 */
210 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
214 * BOARD Specific: Threats IRQ audio specific calls
216 static void cx8801_aud_irq(snd_cx88_card_t *chip)
218 struct cx88_core *core = chip->core;
221 status = cx_read(MO_AUD_INTSTAT);
222 mask = cx_read(MO_AUD_INTMSK);
223 if (0 == (status & mask))
225 cx_write(MO_AUD_INTSTAT, status);
226 if (debug > 1 || (status & mask & ~0xff))
227 cx88_print_irqbits(core->name, "irq aud",
228 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
230 /* risc op code error */
231 if (status & AUD_INT_OPC_ERR) {
232 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
233 cx_clear(MO_AUD_DMACNTRL, 0x11);
234 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
236 if (status & AUD_INT_DN_SYNC) {
237 dprintk(1, "Downstream sync error\n");
238 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
241 /* risc1 downstream */
242 if (status & AUD_INT_DN_RISCI1) {
243 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
244 snd_pcm_period_elapsed(chip->substream);
246 /* FIXME: Any other status should deserve a special handling? */
250 * BOARD Specific: Handles IRQ calls
252 static irqreturn_t cx8801_irq(int irq, void *dev_id)
254 snd_cx88_card_t *chip = dev_id;
255 struct cx88_core *core = chip->core;
257 int loop, handled = 0;
259 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
260 status = cx_read(MO_PCI_INTSTAT) &
261 (core->pci_irqmask | PCI_INT_AUDINT);
264 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
265 loop, MAX_IRQ_LOOP, status);
267 cx_write(MO_PCI_INTSTAT, status);
269 if (status & core->pci_irqmask)
270 cx88_core_irq(core, status);
271 if (status & PCI_INT_AUDINT)
272 cx8801_aud_irq(chip);
275 if (MAX_IRQ_LOOP == loop) {
277 "%s/1: IRQ loop detected, disabling interrupts\n",
279 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
283 return IRQ_RETVAL(handled);
287 static int dsp_buffer_free(snd_cx88_card_t *chip)
289 BUG_ON(!chip->dma_size);
291 dprintk(2,"Freeing buffer\n");
292 videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
293 videobuf_dma_free(chip->dma_risc);
294 btcx_riscmem_free(chip->pci,&chip->buf->risc);
297 chip->dma_risc = NULL;
303 /****************************************************************************
305 ****************************************************************************/
308 * Digital hardware definition
310 #define DEFAULT_FIFO_SIZE 4096
311 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
312 .info = SNDRV_PCM_INFO_MMAP |
313 SNDRV_PCM_INFO_INTERLEAVED |
314 SNDRV_PCM_INFO_BLOCK_TRANSFER |
315 SNDRV_PCM_INFO_MMAP_VALID,
316 .formats = SNDRV_PCM_FMTBIT_S16_LE,
318 .rates = SNDRV_PCM_RATE_48000,
323 /* Analog audio output will be full of clicks and pops if there
324 are not exactly four lines in the SRAM FIFO buffer. */
325 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
326 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
329 .buffer_bytes_max = (1024*1024),
333 * audio pcm capture open callback
335 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
337 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
338 struct snd_pcm_runtime *runtime = substream->runtime;
342 printk(KERN_ERR "BUG: cx88 can't find device struct."
343 " Can't proceed with open\n");
347 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
351 chip->substream = substream;
353 runtime->hw = snd_cx88_digital_hw;
355 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
356 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
357 bpl &= ~7; /* must be multiple of 8 */
358 runtime->hw.period_bytes_min = bpl;
359 runtime->hw.period_bytes_max = bpl;
364 dprintk(1,"Error opening PCM!\n");
369 * audio close callback
371 static int snd_cx88_close(struct snd_pcm_substream *substream)
379 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
380 struct snd_pcm_hw_params * hw_params)
382 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
383 struct videobuf_dmabuf *dma;
385 struct cx88_audio_buffer *buf;
388 if (substream->runtime->dma_area) {
389 dsp_buffer_free(chip);
390 substream->runtime->dma_area = NULL;
393 chip->period_size = params_period_bytes(hw_params);
394 chip->num_periods = params_periods(hw_params);
395 chip->dma_size = chip->period_size * params_periods(hw_params);
397 BUG_ON(!chip->dma_size);
398 BUG_ON(chip->num_periods & (chip->num_periods-1));
400 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
404 buf->bpl = chip->period_size;
407 videobuf_dma_init(dma);
408 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
409 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
413 ret = videobuf_dma_map(&chip->pci->dev, dma);
417 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
418 chip->period_size, chip->num_periods, 1);
422 /* Loop back to start of program */
423 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
424 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
427 chip->dma_risc = dma;
429 substream->runtime->dma_area = chip->dma_risc->vaddr;
430 substream->runtime->dma_bytes = chip->dma_size;
431 substream->runtime->dma_addr = 0;
442 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
445 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
447 if (substream->runtime->dma_area) {
448 dsp_buffer_free(chip);
449 substream->runtime->dma_area = NULL;
458 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
466 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
468 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
471 /* Local interrupts are already disabled by ALSA */
472 spin_lock(&chip->reg_lock);
475 case SNDRV_PCM_TRIGGER_START:
476 err=_cx88_start_audio_dma(chip);
478 case SNDRV_PCM_TRIGGER_STOP:
479 err=_cx88_stop_audio_dma(chip);
486 spin_unlock(&chip->reg_lock);
494 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
496 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
497 struct snd_pcm_runtime *runtime = substream->runtime;
500 count = atomic_read(&chip->count);
502 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
503 // count, new, count & (runtime->periods-1),
504 // runtime->period_size * (count & (runtime->periods-1)));
505 return runtime->period_size * (count & (runtime->periods-1));
509 * page callback (needed for mmap)
511 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
512 unsigned long offset)
514 void *pageptr = substream->runtime->dma_area + offset;
515 return vmalloc_to_page(pageptr);
521 static struct snd_pcm_ops snd_cx88_pcm_ops = {
522 .open = snd_cx88_pcm_open,
523 .close = snd_cx88_close,
524 .ioctl = snd_pcm_lib_ioctl,
525 .hw_params = snd_cx88_hw_params,
526 .hw_free = snd_cx88_hw_free,
527 .prepare = snd_cx88_prepare,
528 .trigger = snd_cx88_card_trigger,
529 .pointer = snd_cx88_pointer,
530 .page = snd_cx88_page,
534 * create a PCM device
536 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
541 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
544 pcm->private_data = chip;
545 strcpy(pcm->name, name);
546 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
551 /****************************************************************************
553 ****************************************************************************/
554 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
555 struct snd_ctl_elem_info *info)
557 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
559 info->value.integer.min = 0;
560 info->value.integer.max = 0x3f;
565 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
566 struct snd_ctl_elem_value *value)
568 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
569 struct cx88_core *core=chip->core;
570 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
571 bal = cx_read(AUD_BAL_CTL);
573 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
575 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
580 /* OK - TODO: test it */
581 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
582 struct snd_ctl_elem_value *value)
584 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
585 struct cx88_core *core=chip->core;
586 int left, right, v, b;
590 left = value->value.integer.value[0] & 0x3f;
591 right = value->value.integer.value[1] & 0x3f;
599 /* Do we really know this will always be called with IRQs on? */
600 spin_lock_irq(&chip->reg_lock);
601 old = cx_read(AUD_VOL_CTL);
602 if (v != (old & 0x3f)) {
603 cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
606 if (cx_read(AUD_BAL_CTL) != b) {
607 cx_write(AUD_BAL_CTL, b);
610 spin_unlock_irq(&chip->reg_lock);
615 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
617 static const struct snd_kcontrol_new snd_cx88_volume = {
618 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
619 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
620 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
621 .name = "Playback Volume",
622 .info = snd_cx88_volume_info,
623 .get = snd_cx88_volume_get,
624 .put = snd_cx88_volume_put,
625 .tlv.p = snd_cx88_db_scale,
628 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
629 struct snd_ctl_elem_value *value)
631 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
632 struct cx88_core *core = chip->core;
633 u32 bit = kcontrol->private_value;
635 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
639 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
640 struct snd_ctl_elem_value *value)
642 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
643 struct cx88_core *core = chip->core;
644 u32 bit = kcontrol->private_value;
648 spin_lock_irq(&chip->reg_lock);
649 vol = cx_read(AUD_VOL_CTL);
650 if (value->value.integer.value[0] != !(vol & bit)) {
652 cx_write(AUD_VOL_CTL, vol);
655 spin_unlock_irq(&chip->reg_lock);
659 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
660 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
661 .name = "Playback Switch",
662 .info = snd_ctl_boolean_mono_info,
663 .get = snd_cx88_switch_get,
664 .put = snd_cx88_switch_put,
665 .private_value = (1<<8),
668 static const struct snd_kcontrol_new snd_cx88_source_switch = {
669 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
670 .name = "Capture Switch",
671 .info = snd_ctl_boolean_mono_info,
672 .get = snd_cx88_switch_get,
673 .put = snd_cx88_switch_put,
674 .private_value = (1<<6),
677 /****************************************************************************
678 Basic Flow for Sound Devices
679 ****************************************************************************/
682 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
683 * Only boards with eeprom and byte 1 at eeprom=1 have it
686 static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = {
687 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
688 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
691 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
694 * Chip-specific destructor
697 static int snd_cx88_free(snd_cx88_card_t *chip)
701 free_irq(chip->irq, chip);
703 cx88_core_put(chip->core,chip->pci);
705 pci_disable_device(chip->pci);
710 * Component Destructor
712 static void snd_cx88_dev_free(struct snd_card * card)
714 snd_cx88_card_t *chip = card->private_data;
721 * Alsa Constructor - Component probe
725 static int __devinit snd_cx88_create(struct snd_card *card,
727 snd_cx88_card_t **rchip)
729 snd_cx88_card_t *chip;
730 struct cx88_core *core;
732 unsigned char pci_lat;
736 err = pci_enable_device(pci);
742 chip = card->private_data;
744 core = cx88_core_get(pci);
750 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
751 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
753 cx88_core_put(core,pci);
762 spin_lock_init(&chip->reg_lock);
767 err = request_irq(chip->pci->irq, cx8801_irq,
768 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
770 dprintk(0, "%s: can't get IRQ %d\n",
771 chip->core->name, chip->pci->irq);
776 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
778 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
779 "latency: %d, mmio: 0x%llx\n", core->name, devno,
780 pci_name(pci), pci->revision, pci->irq,
781 pci_lat, (unsigned long long)pci_resource_start(pci,0));
783 chip->irq = pci->irq;
784 synchronize_irq(chip->irq);
786 snd_card_set_dev(card, &pci->dev);
793 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
794 const struct pci_device_id *pci_id)
796 struct snd_card *card;
797 snd_cx88_card_t *chip;
800 if (devno >= SNDRV_CARDS)
803 if (!enable[devno]) {
808 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
809 sizeof(snd_cx88_card_t), &card);
813 card->private_free = snd_cx88_dev_free;
815 err = snd_cx88_create(card, pci, &chip);
819 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
823 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
826 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
829 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
833 strcpy (card->driver, "CX88x");
834 sprintf(card->shortname, "Conexant CX%x", pci->device);
835 sprintf(card->longname, "%s at %#llx",
836 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
837 strcpy (card->mixername, "CX88");
839 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
842 err = snd_card_register(card);
845 pci_set_drvdata(pci,card);
857 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
859 struct cx88_audio_dev *card = pci_get_drvdata(pci);
861 snd_card_free((void *)card);
863 pci_set_drvdata(pci, NULL);
869 * PCI driver definition
872 static struct pci_driver cx88_audio_pci_driver = {
873 .name = "cx88_audio",
874 .id_table = cx88_audio_pci_tbl,
875 .probe = cx88_audio_initdev,
876 .remove = __devexit_p(cx88_audio_finidev),
879 /****************************************************************************
881 ****************************************************************************/
886 static int __init cx88_audio_init(void)
888 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
889 (CX88_VERSION_CODE >> 16) & 0xff,
890 (CX88_VERSION_CODE >> 8) & 0xff,
891 CX88_VERSION_CODE & 0xff);
893 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
894 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
896 return pci_register_driver(&cx88_audio_pci_driver);
902 static void __exit cx88_audio_fini(void)
904 pci_unregister_driver(&cx88_audio_pci_driver);
907 module_init(cx88_audio_init);
908 module_exit(cx88_audio_fini);
910 /* ----------------------------------------------------------- */