Commit | Line | Data |
---|---|---|
b7f355d2 MCC |
1 | /* |
2 | * | |
3 | * Support for audio capture | |
4 | * PCI function #1 of the cx2388x. | |
5 | * | |
05b27233 | 6 | * (c) 2007 Trent Piepho <xyzzy@speakeasy.org> |
b7f355d2 | 7 | * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org> |
2e7c6dc3 | 8 | * (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org> |
b7f355d2 | 9 | * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org> |
c1017a4c | 10 | * Based on dummy.c by Jaroslav Kysela <perex@perex.cz> |
b7f355d2 MCC |
11 | * |
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. | |
16 | * | |
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. | |
21 | * | |
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. | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/device.h> | |
30 | #include <linux/interrupt.h> | |
f6210c91 | 31 | #include <linux/vmalloc.h> |
c24228da | 32 | #include <linux/dma-mapping.h> |
19453bc1 | 33 | #include <linux/pci.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
c24228da | 35 | |
b7f355d2 | 36 | #include <asm/delay.h> |
b7f355d2 MCC |
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> | |
bbaccc04 | 42 | #include <sound/tlv.h> |
6951803c | 43 | #include <media/wm8775.h> |
b7f355d2 MCC |
44 | |
45 | #include "cx88.h" | |
46 | #include "cx88-reg.h" | |
47 | ||
db613710 MCC |
48 | #define dprintk(level, fmt, arg...) do { \ |
49 | if (debug + 1 > level) \ | |
50 | printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg);\ | |
51 | } while(0) | |
b7f355d2 | 52 | |
db613710 MCC |
53 | #define dprintk_core(level, fmt, arg...) do { \ |
54 | if (debug + 1 > level) \ | |
55 | printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg);\ | |
56 | } while(0) | |
b7f355d2 | 57 | |
b7f355d2 MCC |
58 | /**************************************************************************** |
59 | Data type declarations - Can be moded to a header file later | |
60 | ****************************************************************************/ | |
61 | ||
fecfedeb LP |
62 | struct cx88_audio_buffer { |
63 | unsigned int bpl; | |
64 | struct btcx_riscmem risc; | |
65 | struct videobuf_dmabuf dma; | |
66 | }; | |
67 | ||
b7f355d2 MCC |
68 | struct cx88_audio_dev { |
69 | struct cx88_core *core; | |
70 | struct cx88_dmaqueue q; | |
71 | ||
72 | /* pci i/o */ | |
73 | struct pci_dev *pci; | |
b7f355d2 MCC |
74 | |
75 | /* audio controls */ | |
76 | int irq; | |
77 | ||
f7cbb7fc | 78 | struct snd_card *card; |
b7f355d2 MCC |
79 | |
80 | spinlock_t reg_lock; | |
05b27233 | 81 | atomic_t count; |
b7f355d2 MCC |
82 | |
83 | unsigned int dma_size; | |
84 | unsigned int period_size; | |
85 | unsigned int num_periods; | |
86 | ||
c1accaa2 | 87 | struct videobuf_dmabuf *dma_risc; |
b7f355d2 | 88 | |
fecfedeb | 89 | struct cx88_audio_buffer *buf; |
b7f355d2 | 90 | |
05b27233 | 91 | struct snd_pcm_substream *substream; |
b7f355d2 MCC |
92 | }; |
93 | typedef struct cx88_audio_dev snd_cx88_card_t; | |
94 | ||
95 | ||
96 | ||
97 | /**************************************************************************** | |
98 | Module global static vars | |
99 | ****************************************************************************/ | |
100 | ||
101 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
2e4e98e7 | 102 | static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
90ab5ee9 | 103 | static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; |
b7f355d2 MCC |
104 | |
105 | module_param_array(enable, bool, NULL, 0444); | |
106 | MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled."); | |
107 | ||
108 | module_param_array(index, int, NULL, 0444); | |
109 | MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s)."); | |
110 | ||
111 | ||
112 | /**************************************************************************** | |
113 | Module macros | |
114 | ****************************************************************************/ | |
115 | ||
116 | MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards"); | |
117 | MODULE_AUTHOR("Ricardo Cerqueira"); | |
2e7c6dc3 | 118 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); |
b7f355d2 | 119 | MODULE_LICENSE("GPL"); |
1990d50b MCC |
120 | MODULE_VERSION(CX88_VERSION); |
121 | ||
b7f355d2 MCC |
122 | MODULE_SUPPORTED_DEVICE("{{Conexant,23881}," |
123 | "{{Conexant,23882}," | |
124 | "{{Conexant,23883}"); | |
a5ed425c | 125 | static unsigned int debug; |
b7f355d2 MCC |
126 | module_param(debug,int,0644); |
127 | MODULE_PARM_DESC(debug,"enable debug messages"); | |
128 | ||
129 | /**************************************************************************** | |
130 | Module specific funtions | |
131 | ****************************************************************************/ | |
132 | ||
133 | /* | |
134 | * BOARD Specific: Sets audio DMA | |
135 | */ | |
136 | ||
be8a82d1 | 137 | static int _cx88_start_audio_dma(snd_cx88_card_t *chip) |
b7f355d2 | 138 | { |
fecfedeb | 139 | struct cx88_audio_buffer *buf = chip->buf; |
b7f355d2 | 140 | struct cx88_core *core=chip->core; |
2e4e98e7 | 141 | const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; |
b7f355d2 | 142 | |
59fd8f8d TP |
143 | /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ |
144 | cx_clear(MO_AUD_DMACNTRL, 0x11); | |
b7f355d2 MCC |
145 | |
146 | /* setup fifo + format - out channel */ | |
59fd8f8d | 147 | cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma); |
b7f355d2 MCC |
148 | |
149 | /* sets bpl size */ | |
150 | cx_write(MO_AUDD_LNGTH, buf->bpl); | |
151 | ||
152 | /* reset counter */ | |
05b27233 TP |
153 | cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET); |
154 | atomic_set(&chip->count, 0); | |
b7f355d2 | 155 | |
05b27233 TP |
156 | dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d " |
157 | "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1, | |
59fd8f8d TP |
158 | chip->num_periods, buf->bpl * chip->num_periods); |
159 | ||
b7f355d2 | 160 | /* Enables corresponding bits at AUD_INT_STAT */ |
59fd8f8d TP |
161 | cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
162 | AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); | |
163 | ||
164 | /* Clean any pending interrupt bits already set */ | |
165 | cx_write(MO_AUD_INTSTAT, ~0); | |
166 | ||
167 | /* enable audio irqs */ | |
168 | cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT); | |
b7f355d2 MCC |
169 | |
170 | /* start dma */ | |
171 | cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */ | |
172 | cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */ | |
173 | ||
174 | if (debug) | |
59fd8f8d | 175 | cx88_sram_channel_dump(chip->core, audio_ch); |
b7f355d2 MCC |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
180 | /* | |
181 | * BOARD Specific: Resets audio DMA | |
182 | */ | |
be8a82d1 | 183 | static int _cx88_stop_audio_dma(snd_cx88_card_t *chip) |
b7f355d2 MCC |
184 | { |
185 | struct cx88_core *core=chip->core; | |
186 | dprintk(1, "Stopping audio DMA\n"); | |
187 | ||
188 | /* stop dma */ | |
189 | cx_clear(MO_AUD_DMACNTRL, 0x11); | |
190 | ||
191 | /* disable irqs */ | |
8ddac9ee | 192 | cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT); |
59fd8f8d TP |
193 | cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | |
194 | AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); | |
b7f355d2 MCC |
195 | |
196 | if (debug) | |
197 | cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); | |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
05b27233 | 202 | #define MAX_IRQ_LOOP 50 |
b7f355d2 MCC |
203 | |
204 | /* | |
205 | * BOARD Specific: IRQ dma bits | |
206 | */ | |
2e4e98e7 | 207 | static const char *cx88_aud_irqs[32] = { |
b7f355d2 MCC |
208 | "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ |
209 | NULL, /* reserved */ | |
210 | "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ | |
211 | NULL, /* reserved */ | |
212 | "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ | |
213 | NULL, /* reserved */ | |
214 | "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ | |
215 | NULL, /* reserved */ | |
216 | "opc_err", "par_err", "rip_err", /* 16-18 */ | |
217 | "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ | |
218 | }; | |
219 | ||
220 | /* | |
221 | * BOARD Specific: Threats IRQ audio specific calls | |
222 | */ | |
223 | static void cx8801_aud_irq(snd_cx88_card_t *chip) | |
224 | { | |
225 | struct cx88_core *core = chip->core; | |
226 | u32 status, mask; | |
b7f355d2 MCC |
227 | |
228 | status = cx_read(MO_AUD_INTSTAT); | |
229 | mask = cx_read(MO_AUD_INTMSK); | |
05b27233 | 230 | if (0 == (status & mask)) |
b7f355d2 | 231 | return; |
b7f355d2 MCC |
232 | cx_write(MO_AUD_INTSTAT, status); |
233 | if (debug > 1 || (status & mask & ~0xff)) | |
234 | cx88_print_irqbits(core->name, "irq aud", | |
66623a04 MCC |
235 | cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs), |
236 | status, mask); | |
b7f355d2 | 237 | /* risc op code error */ |
59fd8f8d | 238 | if (status & AUD_INT_OPC_ERR) { |
05b27233 | 239 | printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name); |
b7f355d2 MCC |
240 | cx_clear(MO_AUD_DMACNTRL, 0x11); |
241 | cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); | |
242 | } | |
05b27233 TP |
243 | if (status & AUD_INT_DN_SYNC) { |
244 | dprintk(1, "Downstream sync error\n"); | |
245 | cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET); | |
246 | return; | |
247 | } | |
b7f355d2 | 248 | /* risc1 downstream */ |
59fd8f8d | 249 | if (status & AUD_INT_DN_RISCI1) { |
05b27233 | 250 | atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT)); |
b7f355d2 MCC |
251 | snd_pcm_period_elapsed(chip->substream); |
252 | } | |
b7f355d2 MCC |
253 | /* FIXME: Any other status should deserve a special handling? */ |
254 | } | |
255 | ||
256 | /* | |
257 | * BOARD Specific: Handles IRQ calls | |
258 | */ | |
7d12e780 | 259 | static irqreturn_t cx8801_irq(int irq, void *dev_id) |
b7f355d2 MCC |
260 | { |
261 | snd_cx88_card_t *chip = dev_id; | |
262 | struct cx88_core *core = chip->core; | |
263 | u32 status; | |
264 | int loop, handled = 0; | |
265 | ||
266 | for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { | |
8ddac9ee TP |
267 | status = cx_read(MO_PCI_INTSTAT) & |
268 | (core->pci_irqmask | PCI_INT_AUDINT); | |
b7f355d2 MCC |
269 | if (0 == status) |
270 | goto out; | |
05b27233 TP |
271 | dprintk(3, "cx8801_irq loop %d/%d, status %x\n", |
272 | loop, MAX_IRQ_LOOP, status); | |
b7f355d2 MCC |
273 | handled = 1; |
274 | cx_write(MO_PCI_INTSTAT, status); | |
275 | ||
5ba862b7 TP |
276 | if (status & core->pci_irqmask) |
277 | cx88_core_irq(core, status); | |
05b27233 | 278 | if (status & PCI_INT_AUDINT) |
b7f355d2 | 279 | cx8801_aud_irq(chip); |
05b27233 | 280 | } |
b7f355d2 MCC |
281 | |
282 | if (MAX_IRQ_LOOP == loop) { | |
05b27233 TP |
283 | printk(KERN_ERR |
284 | "%s/1: IRQ loop detected, disabling interrupts\n", | |
b7f355d2 | 285 | core->name); |
8ddac9ee | 286 | cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT); |
b7f355d2 MCC |
287 | } |
288 | ||
289 | out: | |
290 | return IRQ_RETVAL(handled); | |
291 | } | |
292 | ||
293 | ||
294 | static int dsp_buffer_free(snd_cx88_card_t *chip) | |
295 | { | |
296 | BUG_ON(!chip->dma_size); | |
297 | ||
298 | dprintk(2,"Freeing buffer\n"); | |
95268403 | 299 | videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc); |
c1accaa2 | 300 | videobuf_dma_free(chip->dma_risc); |
b7f355d2 MCC |
301 | btcx_riscmem_free(chip->pci,&chip->buf->risc); |
302 | kfree(chip->buf); | |
303 | ||
c1accaa2 | 304 | chip->dma_risc = NULL; |
b7f355d2 MCC |
305 | chip->dma_size = 0; |
306 | ||
05b27233 | 307 | return 0; |
b7f355d2 MCC |
308 | } |
309 | ||
310 | /**************************************************************************** | |
311 | ALSA PCM Interface | |
312 | ****************************************************************************/ | |
313 | ||
314 | /* | |
315 | * Digital hardware definition | |
316 | */ | |
05b27233 | 317 | #define DEFAULT_FIFO_SIZE 4096 |
2e4e98e7 | 318 | static const struct snd_pcm_hardware snd_cx88_digital_hw = { |
b7f355d2 MCC |
319 | .info = SNDRV_PCM_INFO_MMAP | |
320 | SNDRV_PCM_INFO_INTERLEAVED | | |
321 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
322 | SNDRV_PCM_INFO_MMAP_VALID, | |
323 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
324 | ||
325 | .rates = SNDRV_PCM_RATE_48000, | |
326 | .rate_min = 48000, | |
327 | .rate_max = 48000, | |
5a5b3b5d | 328 | .channels_min = 2, |
b7f355d2 | 329 | .channels_max = 2, |
05b27233 TP |
330 | /* Analog audio output will be full of clicks and pops if there |
331 | are not exactly four lines in the SRAM FIFO buffer. */ | |
332 | .period_bytes_min = DEFAULT_FIFO_SIZE/4, | |
333 | .period_bytes_max = DEFAULT_FIFO_SIZE/4, | |
334 | .periods_min = 1, | |
335 | .periods_max = 1024, | |
336 | .buffer_bytes_max = (1024*1024), | |
b7f355d2 MCC |
337 | }; |
338 | ||
b7f355d2 MCC |
339 | /* |
340 | * audio pcm capture open callback | |
341 | */ | |
f7cbb7fc | 342 | static int snd_cx88_pcm_open(struct snd_pcm_substream *substream) |
b7f355d2 MCC |
343 | { |
344 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); | |
f7cbb7fc | 345 | struct snd_pcm_runtime *runtime = substream->runtime; |
b7f355d2 MCC |
346 | int err; |
347 | ||
83ee87a3 MCC |
348 | if (!chip) { |
349 | printk(KERN_ERR "BUG: cx88 can't find device struct." | |
350 | " Can't proceed with open\n"); | |
351 | return -ENODEV; | |
352 | } | |
353 | ||
05b27233 | 354 | err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS); |
b7f355d2 MCC |
355 | if (err < 0) |
356 | goto _error; | |
357 | ||
358 | chip->substream = substream; | |
359 | ||
b7f355d2 MCC |
360 | runtime->hw = snd_cx88_digital_hw; |
361 | ||
05b27233 TP |
362 | if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) { |
363 | unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4; | |
364 | bpl &= ~7; /* must be multiple of 8 */ | |
365 | runtime->hw.period_bytes_min = bpl; | |
366 | runtime->hw.period_bytes_max = bpl; | |
367 | } | |
368 | ||
b7f355d2 MCC |
369 | return 0; |
370 | _error: | |
371 | dprintk(1,"Error opening PCM!\n"); | |
b7f355d2 MCC |
372 | return err; |
373 | } | |
374 | ||
375 | /* | |
376 | * audio close callback | |
377 | */ | |
f7cbb7fc | 378 | static int snd_cx88_close(struct snd_pcm_substream *substream) |
b7f355d2 | 379 | { |
b7f355d2 MCC |
380 | return 0; |
381 | } | |
382 | ||
383 | /* | |
384 | * hw_params callback | |
385 | */ | |
f7cbb7fc TI |
386 | static int snd_cx88_hw_params(struct snd_pcm_substream * substream, |
387 | struct snd_pcm_hw_params * hw_params) | |
b7f355d2 MCC |
388 | { |
389 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); | |
c1accaa2 MCC |
390 | struct videobuf_dmabuf *dma; |
391 | ||
fecfedeb | 392 | struct cx88_audio_buffer *buf; |
05b27233 | 393 | int ret; |
b7f355d2 MCC |
394 | |
395 | if (substream->runtime->dma_area) { | |
396 | dsp_buffer_free(chip); | |
397 | substream->runtime->dma_area = NULL; | |
398 | } | |
399 | ||
b7f355d2 MCC |
400 | chip->period_size = params_period_bytes(hw_params); |
401 | chip->num_periods = params_periods(hw_params); | |
402 | chip->dma_size = chip->period_size * params_periods(hw_params); | |
403 | ||
404 | BUG_ON(!chip->dma_size); | |
05b27233 | 405 | BUG_ON(chip->num_periods & (chip->num_periods-1)); |
b7f355d2 | 406 | |
fecfedeb | 407 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
b7f355d2 MCC |
408 | if (NULL == buf) |
409 | return -ENOMEM; | |
b7f355d2 | 410 | |
fecfedeb | 411 | buf->bpl = chip->period_size; |
b7f355d2 | 412 | |
fecfedeb | 413 | dma = &buf->dma; |
c1accaa2 MCC |
414 | videobuf_dma_init(dma); |
415 | ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE, | |
fecfedeb | 416 | (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); |
05b27233 TP |
417 | if (ret < 0) |
418 | goto error; | |
b7f355d2 | 419 | |
95268403 | 420 | ret = videobuf_dma_map(&chip->pci->dev, dma); |
05b27233 TP |
421 | if (ret < 0) |
422 | goto error; | |
b7f355d2 | 423 | |
c1accaa2 | 424 | ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist, |
fecfedeb | 425 | chip->period_size, chip->num_periods, 1); |
05b27233 TP |
426 | if (ret < 0) |
427 | goto error; | |
b7f355d2 | 428 | |
05b27233 TP |
429 | /* Loop back to start of program */ |
430 | buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC); | |
b7f355d2 MCC |
431 | buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); |
432 | ||
b7f355d2 | 433 | chip->buf = buf; |
c1accaa2 | 434 | chip->dma_risc = dma; |
b7f355d2 | 435 | |
bb6dbe74 | 436 | substream->runtime->dma_area = chip->dma_risc->vaddr; |
f6210c91 TP |
437 | substream->runtime->dma_bytes = chip->dma_size; |
438 | substream->runtime->dma_addr = 0; | |
b7f355d2 | 439 | return 0; |
05b27233 TP |
440 | |
441 | error: | |
442 | kfree(buf); | |
443 | return ret; | |
b7f355d2 MCC |
444 | } |
445 | ||
446 | /* | |
447 | * hw free callback | |
448 | */ | |
f7cbb7fc | 449 | static int snd_cx88_hw_free(struct snd_pcm_substream * substream) |
b7f355d2 MCC |
450 | { |
451 | ||
452 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); | |
453 | ||
454 | if (substream->runtime->dma_area) { | |
455 | dsp_buffer_free(chip); | |
456 | substream->runtime->dma_area = NULL; | |
457 | } | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
462 | /* | |
463 | * prepare callback | |
464 | */ | |
f7cbb7fc | 465 | static int snd_cx88_prepare(struct snd_pcm_substream *substream) |
b7f355d2 MCC |
466 | { |
467 | return 0; | |
468 | } | |
469 | ||
b7f355d2 MCC |
470 | /* |
471 | * trigger callback | |
472 | */ | |
f7cbb7fc | 473 | static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd) |
b7f355d2 MCC |
474 | { |
475 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); | |
476 | int err; | |
477 | ||
05b27233 | 478 | /* Local interrupts are already disabled by ALSA */ |
b7f355d2 MCC |
479 | spin_lock(&chip->reg_lock); |
480 | ||
481 | switch (cmd) { | |
482 | case SNDRV_PCM_TRIGGER_START: | |
483 | err=_cx88_start_audio_dma(chip); | |
484 | break; | |
485 | case SNDRV_PCM_TRIGGER_STOP: | |
486 | err=_cx88_stop_audio_dma(chip); | |
487 | break; | |
488 | default: | |
489 | err=-EINVAL; | |
490 | break; | |
491 | } | |
492 | ||
493 | spin_unlock(&chip->reg_lock); | |
494 | ||
495 | return err; | |
496 | } | |
497 | ||
498 | /* | |
499 | * pointer callback | |
500 | */ | |
f7cbb7fc | 501 | static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream) |
b7f355d2 MCC |
502 | { |
503 | snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); | |
f7cbb7fc | 504 | struct snd_pcm_runtime *runtime = substream->runtime; |
05b27233 | 505 | u16 count; |
b7f355d2 | 506 | |
05b27233 | 507 | count = atomic_read(&chip->count); |
b7f355d2 | 508 | |
32d83efc | 509 | // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__, |
05b27233 TP |
510 | // count, new, count & (runtime->periods-1), |
511 | // runtime->period_size * (count & (runtime->periods-1))); | |
512 | return runtime->period_size * (count & (runtime->periods-1)); | |
b7f355d2 MCC |
513 | } |
514 | ||
f6210c91 TP |
515 | /* |
516 | * page callback (needed for mmap) | |
517 | */ | |
518 | static struct page *snd_cx88_page(struct snd_pcm_substream *substream, | |
519 | unsigned long offset) | |
520 | { | |
521 | void *pageptr = substream->runtime->dma_area + offset; | |
522 | return vmalloc_to_page(pageptr); | |
523 | } | |
524 | ||
b7f355d2 MCC |
525 | /* |
526 | * operators | |
527 | */ | |
f7cbb7fc | 528 | static struct snd_pcm_ops snd_cx88_pcm_ops = { |
b7f355d2 MCC |
529 | .open = snd_cx88_pcm_open, |
530 | .close = snd_cx88_close, | |
531 | .ioctl = snd_pcm_lib_ioctl, | |
532 | .hw_params = snd_cx88_hw_params, | |
533 | .hw_free = snd_cx88_hw_free, | |
534 | .prepare = snd_cx88_prepare, | |
535 | .trigger = snd_cx88_card_trigger, | |
536 | .pointer = snd_cx88_pointer, | |
f6210c91 | 537 | .page = snd_cx88_page, |
b7f355d2 MCC |
538 | }; |
539 | ||
540 | /* | |
541 | * create a PCM device | |
542 | */ | |
4c62e976 | 543 | static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name) |
b7f355d2 MCC |
544 | { |
545 | int err; | |
f7cbb7fc | 546 | struct snd_pcm *pcm; |
b7f355d2 MCC |
547 | |
548 | err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); | |
549 | if (err < 0) | |
550 | return err; | |
551 | pcm->private_data = chip; | |
552 | strcpy(pcm->name, name); | |
553 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | /**************************************************************************** | |
559 | CONTROL INTERFACE | |
560 | ****************************************************************************/ | |
54ac005a TP |
561 | static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol, |
562 | struct snd_ctl_elem_info *info) | |
b7f355d2 MCC |
563 | { |
564 | info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
82896f29 | 565 | info->count = 2; |
b7f355d2 MCC |
566 | info->value.integer.min = 0; |
567 | info->value.integer.max = 0x3f; | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
54ac005a TP |
572 | static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol, |
573 | struct snd_ctl_elem_value *value) | |
b7f355d2 MCC |
574 | { |
575 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
576 | struct cx88_core *core=chip->core; | |
82896f29 TP |
577 | int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f), |
578 | bal = cx_read(AUD_BAL_CTL); | |
b7f355d2 | 579 | |
82896f29 TP |
580 | value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol; |
581 | vol -= (bal & 0x3f); | |
582 | value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol; | |
b7f355d2 MCC |
583 | |
584 | return 0; | |
585 | } | |
586 | ||
6951803c LR |
587 | static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol, |
588 | struct snd_ctl_elem_value *value) | |
589 | { | |
590 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
591 | struct cx88_core *core = chip->core; | |
6951803c LR |
592 | int left = value->value.integer.value[0]; |
593 | int right = value->value.integer.value[1]; | |
594 | int v, b; | |
595 | ||
6951803c LR |
596 | /* Pass volume & balance onto any WM8775 */ |
597 | if (left >= right) { | |
598 | v = left << 10; | |
599 | b = left ? (0x8000 * right) / left : 0x8000; | |
600 | } else { | |
601 | v = right << 10; | |
602 | b = right ? 0xffff - (0x8000 * left) / right : 0x8000; | |
603 | } | |
bac63981 HV |
604 | wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v); |
605 | wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b); | |
6951803c LR |
606 | } |
607 | ||
b7f355d2 | 608 | /* OK - TODO: test it */ |
54ac005a TP |
609 | static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol, |
610 | struct snd_ctl_elem_value *value) | |
b7f355d2 MCC |
611 | { |
612 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
613 | struct cx88_core *core=chip->core; | |
cca80b97 | 614 | int left, right, v, b; |
82896f29 TP |
615 | int changed = 0; |
616 | u32 old; | |
617 | ||
6951803c LR |
618 | if (core->board.audio_chip == V4L2_IDENT_WM8775) |
619 | snd_cx88_wm8775_volume_put(kcontrol, value); | |
620 | ||
cca80b97 CL |
621 | left = value->value.integer.value[0] & 0x3f; |
622 | right = value->value.integer.value[1] & 0x3f; | |
623 | b = right - left; | |
82896f29 | 624 | if (b < 0) { |
6951803c LR |
625 | v = 0x3f - left; |
626 | b = (-b) | 0x40; | |
82896f29 | 627 | } else { |
6951803c | 628 | v = 0x3f - right; |
82896f29 | 629 | } |
05b27233 | 630 | /* Do we really know this will always be called with IRQs on? */ |
b7f355d2 | 631 | spin_lock_irq(&chip->reg_lock); |
82896f29 TP |
632 | old = cx_read(AUD_VOL_CTL); |
633 | if (v != (old & 0x3f)) { | |
6951803c LR |
634 | cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v); |
635 | changed = 1; | |
82896f29 | 636 | } |
6951803c LR |
637 | if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) { |
638 | cx_write(AUD_BAL_CTL, b); | |
639 | changed = 1; | |
82896f29 | 640 | } |
b7f355d2 MCC |
641 | spin_unlock_irq(&chip->reg_lock); |
642 | ||
82896f29 | 643 | return changed; |
b7f355d2 MCC |
644 | } |
645 | ||
bbaccc04 TP |
646 | static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0); |
647 | ||
2e4e98e7 | 648 | static const struct snd_kcontrol_new snd_cx88_volume = { |
b7f355d2 | 649 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
bbaccc04 TP |
650 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | |
651 | SNDRV_CTL_ELEM_ACCESS_TLV_READ, | |
6951803c | 652 | .name = "Analog-TV Volume", |
54ac005a TP |
653 | .info = snd_cx88_volume_info, |
654 | .get = snd_cx88_volume_get, | |
655 | .put = snd_cx88_volume_put, | |
bbaccc04 | 656 | .tlv.p = snd_cx88_db_scale, |
b7f355d2 MCC |
657 | }; |
658 | ||
54ac005a TP |
659 | static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol, |
660 | struct snd_ctl_elem_value *value) | |
661 | { | |
662 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
663 | struct cx88_core *core = chip->core; | |
664 | u32 bit = kcontrol->private_value; | |
665 | ||
666 | value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit); | |
667 | return 0; | |
668 | } | |
669 | ||
670 | static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol, | |
671 | struct snd_ctl_elem_value *value) | |
672 | { | |
673 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
674 | struct cx88_core *core = chip->core; | |
675 | u32 bit = kcontrol->private_value; | |
676 | int ret = 0; | |
677 | u32 vol; | |
678 | ||
679 | spin_lock_irq(&chip->reg_lock); | |
680 | vol = cx_read(AUD_VOL_CTL); | |
681 | if (value->value.integer.value[0] != !(vol & bit)) { | |
682 | vol ^= bit; | |
6951803c LR |
683 | cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol); |
684 | /* Pass mute onto any WM8775 */ | |
685 | if ((core->board.audio_chip == V4L2_IDENT_WM8775) && | |
bac63981 HV |
686 | ((1<<6) == bit)) |
687 | wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit)); | |
54ac005a TP |
688 | ret = 1; |
689 | } | |
690 | spin_unlock_irq(&chip->reg_lock); | |
691 | return ret; | |
692 | } | |
693 | ||
2e4e98e7 | 694 | static const struct snd_kcontrol_new snd_cx88_dac_switch = { |
54ac005a | 695 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
6951803c | 696 | .name = "Audio-Out Switch", |
54ac005a TP |
697 | .info = snd_ctl_boolean_mono_info, |
698 | .get = snd_cx88_switch_get, | |
699 | .put = snd_cx88_switch_put, | |
700 | .private_value = (1<<8), | |
701 | }; | |
702 | ||
2e4e98e7 | 703 | static const struct snd_kcontrol_new snd_cx88_source_switch = { |
54ac005a | 704 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
6951803c | 705 | .name = "Analog-TV Switch", |
54ac005a TP |
706 | .info = snd_ctl_boolean_mono_info, |
707 | .get = snd_cx88_switch_get, | |
708 | .put = snd_cx88_switch_put, | |
709 | .private_value = (1<<6), | |
710 | }; | |
b7f355d2 | 711 | |
6951803c LR |
712 | static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol, |
713 | struct snd_ctl_elem_value *value) | |
714 | { | |
715 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
716 | struct cx88_core *core = chip->core; | |
bac63981 | 717 | s32 val; |
6951803c | 718 | |
bac63981 HV |
719 | val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS); |
720 | value->value.integer.value[0] = val ? 1 : 0; | |
6951803c LR |
721 | return 0; |
722 | } | |
723 | ||
724 | static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol, | |
725 | struct snd_ctl_elem_value *value) | |
726 | { | |
727 | snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); | |
728 | struct cx88_core *core = chip->core; | |
729 | struct v4l2_control client_ctl; | |
730 | ||
731 | memset(&client_ctl, 0, sizeof(client_ctl)); | |
732 | client_ctl.value = 0 != value->value.integer.value[0]; | |
733 | client_ctl.id = V4L2_CID_AUDIO_LOUDNESS; | |
734 | call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl); | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | static struct snd_kcontrol_new snd_cx88_alc_switch = { | |
740 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
741 | .name = "Line-In ALC Switch", | |
742 | .info = snd_ctl_boolean_mono_info, | |
743 | .get = snd_cx88_alc_get, | |
744 | .put = snd_cx88_alc_put, | |
745 | }; | |
746 | ||
b7f355d2 MCC |
747 | /**************************************************************************** |
748 | Basic Flow for Sound Devices | |
749 | ****************************************************************************/ | |
750 | ||
751 | /* | |
752 | * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio | |
753 | * Only boards with eeprom and byte 1 at eeprom=1 have it | |
754 | */ | |
755 | ||
4c62e976 | 756 | static const struct pci_device_id cx88_audio_pci_tbl[] = { |
b7f355d2 MCC |
757 | {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, |
758 | {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, | |
759 | {0, } | |
760 | }; | |
761 | MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); | |
762 | ||
763 | /* | |
764 | * Chip-specific destructor | |
765 | */ | |
766 | ||
767 | static int snd_cx88_free(snd_cx88_card_t *chip) | |
768 | { | |
769 | ||
f000fd80 | 770 | if (chip->irq >= 0) |
b7f355d2 | 771 | free_irq(chip->irq, chip); |
b7f355d2 MCC |
772 | |
773 | cx88_core_put(chip->core,chip->pci); | |
774 | ||
775 | pci_disable_device(chip->pci); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | /* | |
780 | * Component Destructor | |
781 | */ | |
f7cbb7fc | 782 | static void snd_cx88_dev_free(struct snd_card * card) |
b7f355d2 MCC |
783 | { |
784 | snd_cx88_card_t *chip = card->private_data; | |
785 | ||
786 | snd_cx88_free(chip); | |
787 | } | |
788 | ||
789 | ||
790 | /* | |
791 | * Alsa Constructor - Component probe | |
792 | */ | |
793 | ||
a5ed425c | 794 | static int devno; |
4c62e976 GKH |
795 | static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci, |
796 | snd_cx88_card_t **rchip, | |
797 | struct cx88_core **core_ptr) | |
b7f355d2 MCC |
798 | { |
799 | snd_cx88_card_t *chip; | |
800 | struct cx88_core *core; | |
801 | int err; | |
19453bc1 | 802 | unsigned char pci_lat; |
b7f355d2 MCC |
803 | |
804 | *rchip = NULL; | |
805 | ||
806 | err = pci_enable_device(pci); | |
807 | if (err < 0) | |
808 | return err; | |
809 | ||
810 | pci_set_master(pci); | |
811 | ||
abf84383 | 812 | chip = card->private_data; |
b7f355d2 MCC |
813 | |
814 | core = cx88_core_get(pci); | |
31dcbf99 DS |
815 | if (NULL == core) { |
816 | err = -EINVAL; | |
31dcbf99 DS |
817 | return err; |
818 | } | |
b7f355d2 | 819 | |
284901a9 | 820 | if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) { |
b7f355d2 MCC |
821 | dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name); |
822 | err = -EIO; | |
6951803c | 823 | cx88_core_put(core, pci); |
b7f355d2 MCC |
824 | return err; |
825 | } | |
826 | ||
827 | ||
828 | /* pci init */ | |
829 | chip->card = card; | |
830 | chip->pci = pci; | |
831 | chip->irq = -1; | |
832 | spin_lock_init(&chip->reg_lock); | |
833 | ||
b7f355d2 MCC |
834 | chip->core = core; |
835 | ||
836 | /* get irq */ | |
837 | err = request_irq(chip->pci->irq, cx8801_irq, | |
8076fe32 | 838 | IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip); |
b7f355d2 MCC |
839 | if (err < 0) { |
840 | dprintk(0, "%s: can't get IRQ %d\n", | |
841 | chip->core->name, chip->pci->irq); | |
842 | return err; | |
843 | } | |
844 | ||
845 | /* print pci info */ | |
19453bc1 | 846 | pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat); |
b7f355d2 MCC |
847 | |
848 | dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, " | |
228aef63 | 849 | "latency: %d, mmio: 0x%llx\n", core->name, devno, |
19453bc1 TP |
850 | pci_name(pci), pci->revision, pci->irq, |
851 | pci_lat, (unsigned long long)pci_resource_start(pci,0)); | |
b7f355d2 MCC |
852 | |
853 | chip->irq = pci->irq; | |
854 | synchronize_irq(chip->irq); | |
855 | ||
856 | snd_card_set_dev(card, &pci->dev); | |
857 | ||
858 | *rchip = chip; | |
6951803c | 859 | *core_ptr = core; |
b7f355d2 MCC |
860 | |
861 | return 0; | |
862 | } | |
863 | ||
4c62e976 GKH |
864 | static int cx88_audio_initdev(struct pci_dev *pci, |
865 | const struct pci_device_id *pci_id) | |
b7f355d2 | 866 | { |
f7cbb7fc | 867 | struct snd_card *card; |
b7f355d2 | 868 | snd_cx88_card_t *chip; |
d6972cc8 | 869 | struct cx88_core *core = NULL; |
b7f355d2 MCC |
870 | int err; |
871 | ||
872 | if (devno >= SNDRV_CARDS) | |
873 | return (-ENODEV); | |
874 | ||
875 | if (!enable[devno]) { | |
876 | ++devno; | |
877 | return (-ENOENT); | |
878 | } | |
879 | ||
758021bf TI |
880 | err = snd_card_create(index[devno], id[devno], THIS_MODULE, |
881 | sizeof(snd_cx88_card_t), &card); | |
882 | if (err < 0) | |
883 | return err; | |
b7f355d2 MCC |
884 | |
885 | card->private_free = snd_cx88_dev_free; | |
886 | ||
6951803c | 887 | err = snd_cx88_create(card, pci, &chip, &core); |
b7f355d2 | 888 | if (err < 0) |
a8782f66 | 889 | goto error; |
b7f355d2 MCC |
890 | |
891 | err = snd_cx88_pcm(chip, 0, "CX88 Digital"); | |
82896f29 TP |
892 | if (err < 0) |
893 | goto error; | |
b7f355d2 | 894 | |
54ac005a TP |
895 | err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip)); |
896 | if (err < 0) | |
897 | goto error; | |
898 | err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip)); | |
899 | if (err < 0) | |
900 | goto error; | |
901 | err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip)); | |
82896f29 TP |
902 | if (err < 0) |
903 | goto error; | |
b7f355d2 | 904 | |
6951803c LR |
905 | /* If there's a wm8775 then add a Line-In ALC switch */ |
906 | if (core->board.audio_chip == V4L2_IDENT_WM8775) | |
907 | snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip)); | |
908 | ||
b7f355d2 MCC |
909 | strcpy (card->driver, "CX88x"); |
910 | sprintf(card->shortname, "Conexant CX%x", pci->device); | |
228aef63 GKH |
911 | sprintf(card->longname, "%s at %#llx", |
912 | card->shortname,(unsigned long long)pci_resource_start(pci, 0)); | |
b7f355d2 MCC |
913 | strcpy (card->mixername, "CX88"); |
914 | ||
915 | dprintk (0, "%s/%i: ALSA support for cx2388x boards\n", | |
916 | card->driver,devno); | |
917 | ||
918 | err = snd_card_register(card); | |
82896f29 TP |
919 | if (err < 0) |
920 | goto error; | |
b7f355d2 MCC |
921 | pci_set_drvdata(pci,card); |
922 | ||
923 | devno++; | |
924 | return 0; | |
82896f29 TP |
925 | |
926 | error: | |
927 | snd_card_free(card); | |
928 | return err; | |
b7f355d2 MCC |
929 | } |
930 | /* | |
931 | * ALSA destructor | |
932 | */ | |
4c62e976 | 933 | static void cx88_audio_finidev(struct pci_dev *pci) |
b7f355d2 MCC |
934 | { |
935 | struct cx88_audio_dev *card = pci_get_drvdata(pci); | |
936 | ||
937 | snd_card_free((void *)card); | |
938 | ||
939 | pci_set_drvdata(pci, NULL); | |
940 | ||
941 | devno--; | |
942 | } | |
943 | ||
944 | /* | |
945 | * PCI driver definition | |
946 | */ | |
947 | ||
948 | static struct pci_driver cx88_audio_pci_driver = { | |
949 | .name = "cx88_audio", | |
950 | .id_table = cx88_audio_pci_tbl, | |
951 | .probe = cx88_audio_initdev, | |
4c62e976 | 952 | .remove = cx88_audio_finidev, |
b7f355d2 MCC |
953 | }; |
954 | ||
955 | /**************************************************************************** | |
956 | LINUX MODULE INIT | |
957 | ****************************************************************************/ | |
958 | ||
959 | /* | |
960 | * module init | |
961 | */ | |
e36bc31f | 962 | static int __init cx88_audio_init(void) |
b7f355d2 | 963 | { |
1990d50b MCC |
964 | printk(KERN_INFO "cx2388x alsa driver version %s loaded\n", |
965 | CX88_VERSION); | |
b7f355d2 MCC |
966 | return pci_register_driver(&cx88_audio_pci_driver); |
967 | } | |
968 | ||
969 | /* | |
970 | * module remove | |
971 | */ | |
e36bc31f | 972 | static void __exit cx88_audio_fini(void) |
b7f355d2 | 973 | { |
b7f355d2 MCC |
974 | pci_unregister_driver(&cx88_audio_pci_driver); |
975 | } | |
976 | ||
977 | module_init(cx88_audio_init); | |
978 | module_exit(cx88_audio_fini); |