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>
43 #include <media/wm8775.h>
48 #define dprintk(level,fmt, arg...) if (debug >= level) \
49 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
51 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
52 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
54 /****************************************************************************
55 Data type declarations - Can be moded to a header file later
56 ****************************************************************************/
58 struct cx88_audio_buffer {
60 struct btcx_riscmem risc;
61 struct videobuf_dmabuf dma;
64 struct cx88_audio_dev {
65 struct cx88_core *core;
66 struct cx88_dmaqueue q;
74 struct snd_card *card;
79 unsigned int dma_size;
80 unsigned int period_size;
81 unsigned int num_periods;
83 struct videobuf_dmabuf *dma_risc;
85 struct cx88_audio_buffer *buf;
87 struct snd_pcm_substream *substream;
89 typedef struct cx88_audio_dev snd_cx88_card_t;
93 /****************************************************************************
94 Module global static vars
95 ****************************************************************************/
97 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
98 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
99 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
101 module_param_array(enable, bool, NULL, 0444);
102 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
104 module_param_array(index, int, NULL, 0444);
105 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
108 /****************************************************************************
110 ****************************************************************************/
112 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
113 MODULE_AUTHOR("Ricardo Cerqueira");
114 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
115 MODULE_LICENSE("GPL");
116 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
118 "{{Conexant,23883}");
119 static unsigned int debug;
120 module_param(debug,int,0644);
121 MODULE_PARM_DESC(debug,"enable debug messages");
123 /****************************************************************************
124 Module specific funtions
125 ****************************************************************************/
128 * BOARD Specific: Sets audio DMA
131 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
133 struct cx88_audio_buffer *buf = chip->buf;
134 struct cx88_core *core=chip->core;
135 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
137 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
138 cx_clear(MO_AUD_DMACNTRL, 0x11);
140 /* setup fifo + format - out channel */
141 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
144 cx_write(MO_AUDD_LNGTH, buf->bpl);
147 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
148 atomic_set(&chip->count, 0);
150 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
151 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
152 chip->num_periods, buf->bpl * chip->num_periods);
154 /* Enables corresponding bits at AUD_INT_STAT */
155 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
156 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
158 /* Clean any pending interrupt bits already set */
159 cx_write(MO_AUD_INTSTAT, ~0);
161 /* enable audio irqs */
162 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
165 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
166 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
169 cx88_sram_channel_dump(chip->core, audio_ch);
175 * BOARD Specific: Resets audio DMA
177 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
179 struct cx88_core *core=chip->core;
180 dprintk(1, "Stopping audio DMA\n");
183 cx_clear(MO_AUD_DMACNTRL, 0x11);
186 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
187 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
188 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
191 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
196 #define MAX_IRQ_LOOP 50
199 * BOARD Specific: IRQ dma bits
201 static const char *cx88_aud_irqs[32] = {
202 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
204 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
206 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
208 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
210 "opc_err", "par_err", "rip_err", /* 16-18 */
211 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
215 * BOARD Specific: Threats IRQ audio specific calls
217 static void cx8801_aud_irq(snd_cx88_card_t *chip)
219 struct cx88_core *core = chip->core;
222 status = cx_read(MO_AUD_INTSTAT);
223 mask = cx_read(MO_AUD_INTMSK);
224 if (0 == (status & mask))
226 cx_write(MO_AUD_INTSTAT, status);
227 if (debug > 1 || (status & mask & ~0xff))
228 cx88_print_irqbits(core->name, "irq aud",
229 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
231 /* risc op code error */
232 if (status & AUD_INT_OPC_ERR) {
233 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
234 cx_clear(MO_AUD_DMACNTRL, 0x11);
235 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
237 if (status & AUD_INT_DN_SYNC) {
238 dprintk(1, "Downstream sync error\n");
239 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
242 /* risc1 downstream */
243 if (status & AUD_INT_DN_RISCI1) {
244 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
245 snd_pcm_period_elapsed(chip->substream);
247 /* FIXME: Any other status should deserve a special handling? */
251 * BOARD Specific: Handles IRQ calls
253 static irqreturn_t cx8801_irq(int irq, void *dev_id)
255 snd_cx88_card_t *chip = dev_id;
256 struct cx88_core *core = chip->core;
258 int loop, handled = 0;
260 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
261 status = cx_read(MO_PCI_INTSTAT) &
262 (core->pci_irqmask | PCI_INT_AUDINT);
265 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
266 loop, MAX_IRQ_LOOP, status);
268 cx_write(MO_PCI_INTSTAT, status);
270 if (status & core->pci_irqmask)
271 cx88_core_irq(core, status);
272 if (status & PCI_INT_AUDINT)
273 cx8801_aud_irq(chip);
276 if (MAX_IRQ_LOOP == loop) {
278 "%s/1: IRQ loop detected, disabling interrupts\n",
280 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
284 return IRQ_RETVAL(handled);
288 static int dsp_buffer_free(snd_cx88_card_t *chip)
290 BUG_ON(!chip->dma_size);
292 dprintk(2,"Freeing buffer\n");
293 videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
294 videobuf_dma_free(chip->dma_risc);
295 btcx_riscmem_free(chip->pci,&chip->buf->risc);
298 chip->dma_risc = NULL;
304 /****************************************************************************
306 ****************************************************************************/
309 * Digital hardware definition
311 #define DEFAULT_FIFO_SIZE 4096
312 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
313 .info = SNDRV_PCM_INFO_MMAP |
314 SNDRV_PCM_INFO_INTERLEAVED |
315 SNDRV_PCM_INFO_BLOCK_TRANSFER |
316 SNDRV_PCM_INFO_MMAP_VALID,
317 .formats = SNDRV_PCM_FMTBIT_S16_LE,
319 .rates = SNDRV_PCM_RATE_48000,
324 /* Analog audio output will be full of clicks and pops if there
325 are not exactly four lines in the SRAM FIFO buffer. */
326 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
327 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
330 .buffer_bytes_max = (1024*1024),
334 * audio pcm capture open callback
336 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
338 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
339 struct snd_pcm_runtime *runtime = substream->runtime;
343 printk(KERN_ERR "BUG: cx88 can't find device struct."
344 " Can't proceed with open\n");
348 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
352 chip->substream = substream;
354 runtime->hw = snd_cx88_digital_hw;
356 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
357 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
358 bpl &= ~7; /* must be multiple of 8 */
359 runtime->hw.period_bytes_min = bpl;
360 runtime->hw.period_bytes_max = bpl;
365 dprintk(1,"Error opening PCM!\n");
370 * audio close callback
372 static int snd_cx88_close(struct snd_pcm_substream *substream)
380 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
381 struct snd_pcm_hw_params * hw_params)
383 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
384 struct videobuf_dmabuf *dma;
386 struct cx88_audio_buffer *buf;
389 if (substream->runtime->dma_area) {
390 dsp_buffer_free(chip);
391 substream->runtime->dma_area = NULL;
394 chip->period_size = params_period_bytes(hw_params);
395 chip->num_periods = params_periods(hw_params);
396 chip->dma_size = chip->period_size * params_periods(hw_params);
398 BUG_ON(!chip->dma_size);
399 BUG_ON(chip->num_periods & (chip->num_periods-1));
401 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
405 buf->bpl = chip->period_size;
408 videobuf_dma_init(dma);
409 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
410 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
414 ret = videobuf_dma_map(&chip->pci->dev, dma);
418 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
419 chip->period_size, chip->num_periods, 1);
423 /* Loop back to start of program */
424 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
425 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
428 chip->dma_risc = dma;
430 substream->runtime->dma_area = chip->dma_risc->vaddr;
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, const 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;
590 struct v4l2_control client_ctl;
592 /* Pass volume & balance onto any WM8775 */
593 if (value->value.integer.value[0] >= value->value.integer.value[1]) {
594 v = value->value.integer.value[0] << 10;
595 b = value->value.integer.value[0] ?
596 (0x8000 * value->value.integer.value[1]) / value->value.integer.value[0] :
599 v = value->value.integer.value[1] << 10;
600 b = value->value.integer.value[1] ?
601 0xffff - (0x8000 * value->value.integer.value[0]) / value->value.integer.value[1] :
604 client_ctl.value = v;
605 client_ctl.id = V4L2_CID_AUDIO_VOLUME;
606 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
608 client_ctl.value = b;
609 client_ctl.id = V4L2_CID_AUDIO_BALANCE;
610 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
612 left = value->value.integer.value[0] & 0x3f;
613 right = value->value.integer.value[1] & 0x3f;
621 /* Do we really know this will always be called with IRQs on? */
622 spin_lock_irq(&chip->reg_lock);
623 old = cx_read(AUD_VOL_CTL);
624 if (v != (old & 0x3f)) {
625 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
628 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
629 cx_write(AUD_BAL_CTL, b);
632 spin_unlock_irq(&chip->reg_lock);
637 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
639 static const struct snd_kcontrol_new snd_cx88_volume = {
640 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
641 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
642 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
643 .name = "Analog-TV Volume",
644 .info = snd_cx88_volume_info,
645 .get = snd_cx88_volume_get,
646 .put = snd_cx88_volume_put,
647 .tlv.p = snd_cx88_db_scale,
650 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
651 struct snd_ctl_elem_value *value)
653 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
654 struct cx88_core *core = chip->core;
655 u32 bit = kcontrol->private_value;
657 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
661 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
662 struct snd_ctl_elem_value *value)
664 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
665 struct cx88_core *core = chip->core;
666 u32 bit = kcontrol->private_value;
670 spin_lock_irq(&chip->reg_lock);
671 vol = cx_read(AUD_VOL_CTL);
672 if (value->value.integer.value[0] != !(vol & bit)) {
674 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
675 /* Pass mute onto any WM8775 */
677 struct v4l2_control client_ctl;
678 client_ctl.value = 0 != (vol & bit);
679 client_ctl.id = V4L2_CID_AUDIO_MUTE;
680 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
684 spin_unlock_irq(&chip->reg_lock);
688 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
689 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
690 .name = "Audio-Out Switch",
691 .info = snd_ctl_boolean_mono_info,
692 .get = snd_cx88_switch_get,
693 .put = snd_cx88_switch_put,
694 .private_value = (1<<8),
697 static const struct snd_kcontrol_new snd_cx88_source_switch = {
698 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
699 .name = "Analog-TV Switch",
700 .info = snd_ctl_boolean_mono_info,
701 .get = snd_cx88_switch_get,
702 .put = snd_cx88_switch_put,
703 .private_value = (1<<6),
706 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
707 struct snd_ctl_elem_value *value)
709 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
710 struct cx88_core *core = chip->core;
711 struct v4l2_control client_ctl;
713 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
714 call_hw(core, WM8775_GID, core, g_ctrl, &client_ctl);
715 value->value.integer.value[0] = client_ctl.value ? 1 : 0;
720 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
721 struct snd_ctl_elem_value *value)
723 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
724 struct cx88_core *core = chip->core;
725 struct v4l2_control client_ctl;
727 client_ctl.value = 0 != value->value.integer.value[0];
728 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
729 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
734 static struct snd_kcontrol_new snd_cx88_alc_switch = {
735 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
736 .name = "Line-In ALC Switch",
737 .info = snd_ctl_boolean_mono_info,
738 .get = snd_cx88_alc_get,
739 .put = snd_cx88_alc_put,
742 /****************************************************************************
743 Basic Flow for Sound Devices
744 ****************************************************************************/
747 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
748 * Only boards with eeprom and byte 1 at eeprom=1 have it
751 static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = {
752 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
753 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
756 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
759 * Chip-specific destructor
762 static int snd_cx88_free(snd_cx88_card_t *chip)
766 free_irq(chip->irq, chip);
768 cx88_core_put(chip->core,chip->pci);
770 pci_disable_device(chip->pci);
775 * Component Destructor
777 static void snd_cx88_dev_free(struct snd_card * card)
779 snd_cx88_card_t *chip = card->private_data;
786 * Alsa Constructor - Component probe
790 static int __devinit snd_cx88_create(struct snd_card *card,
792 snd_cx88_card_t **rchip)
794 snd_cx88_card_t *chip;
795 struct cx88_core *core;
797 unsigned char pci_lat;
801 err = pci_enable_device(pci);
807 chip = card->private_data;
809 core = cx88_core_get(pci);
815 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
816 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
818 cx88_core_put(core,pci);
827 spin_lock_init(&chip->reg_lock);
832 err = request_irq(chip->pci->irq, cx8801_irq,
833 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
835 dprintk(0, "%s: can't get IRQ %d\n",
836 chip->core->name, chip->pci->irq);
841 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
843 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
844 "latency: %d, mmio: 0x%llx\n", core->name, devno,
845 pci_name(pci), pci->revision, pci->irq,
846 pci_lat, (unsigned long long)pci_resource_start(pci,0));
848 chip->irq = pci->irq;
849 synchronize_irq(chip->irq);
851 snd_card_set_dev(card, &pci->dev);
858 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
859 const struct pci_device_id *pci_id)
861 struct snd_card *card;
862 snd_cx88_card_t *chip;
863 struct v4l2_subdev *sd;
866 if (devno >= SNDRV_CARDS)
869 if (!enable[devno]) {
874 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
875 sizeof(snd_cx88_card_t), &card);
879 card->private_free = snd_cx88_dev_free;
881 err = snd_cx88_create(card, pci, &chip);
885 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
889 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
892 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
895 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
899 /* If there's a wm8775 then add a Line-In ALC switch */
900 list_for_each_entry(sd, &chip->core->v4l2_dev.subdevs, list) {
901 if (WM8775_GID == sd->grp_id) {
902 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch,
908 strcpy (card->driver, "CX88x");
909 sprintf(card->shortname, "Conexant CX%x", pci->device);
910 sprintf(card->longname, "%s at %#llx",
911 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
912 strcpy (card->mixername, "CX88");
914 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
917 err = snd_card_register(card);
920 pci_set_drvdata(pci,card);
932 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
934 struct cx88_audio_dev *card = pci_get_drvdata(pci);
936 snd_card_free((void *)card);
938 pci_set_drvdata(pci, NULL);
944 * PCI driver definition
947 static struct pci_driver cx88_audio_pci_driver = {
948 .name = "cx88_audio",
949 .id_table = cx88_audio_pci_tbl,
950 .probe = cx88_audio_initdev,
951 .remove = __devexit_p(cx88_audio_finidev),
954 /****************************************************************************
956 ****************************************************************************/
961 static int __init cx88_audio_init(void)
963 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
964 (CX88_VERSION_CODE >> 16) & 0xff,
965 (CX88_VERSION_CODE >> 8) & 0xff,
966 CX88_VERSION_CODE & 0xff);
968 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
969 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
971 return pci_register_driver(&cx88_audio_pci_driver);
977 static void __exit cx88_audio_fini(void)
979 pci_unregister_driver(&cx88_audio_pci_driver);
982 module_init(cx88_audio_init);
983 module_exit(cx88_audio_fini);
985 /* ----------------------------------------------------------- */