Commit | Line | Data |
---|---|---|
5f7591c0 | 1 | /* |
bd15eba3 | 2 | * SAA713x ALSA support for V4L |
5f7591c0 | 3 | * |
5f7591c0 | 4 | * |
bd15eba3 | 5 | * Caveats: |
bd15eba3 | 6 | * - Volume doesn't work (it's always at max) |
bd15eba3 RC |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, version 2 | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
5f7591c0 | 20 | * |
5f7591c0 NS |
21 | */ |
22 | ||
5f7591c0 | 23 | #include <sound/driver.h> |
bd15eba3 RC |
24 | #include <linux/init.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/time.h> | |
27 | #include <linux/wait.h> | |
28 | #include <linux/moduleparam.h> | |
29 | #include <linux/module.h> | |
5f7591c0 | 30 | #include <sound/core.h> |
5f7591c0 | 31 | #include <sound/control.h> |
bd15eba3 | 32 | #include <sound/pcm.h> |
d5ee43af | 33 | #include <sound/pcm_params.h> |
5f7591c0 | 34 | #include <sound/initval.h> |
871242b9 | 35 | #include <linux/interrupt.h> |
5f7591c0 NS |
36 | |
37 | #include "saa7134.h" | |
38 | #include "saa7134-reg.h" | |
39 | ||
79dd0c69 RC |
40 | static unsigned int debug = 0; |
41 | module_param(debug, int, 0644); | |
42 | MODULE_PARM_DESC(debug,"enable debug messages [alsa]"); | |
43 | ||
b2c15ea9 RC |
44 | /* |
45 | * Configuration macros | |
46 | */ | |
47 | ||
bd15eba3 | 48 | /* defaults */ |
b2c15ea9 RC |
49 | #define MIXER_ADDR_TVTUNER 0 |
50 | #define MIXER_ADDR_LINE1 1 | |
51 | #define MIXER_ADDR_LINE2 2 | |
52 | #define MIXER_ADDR_LAST 2 | |
5f7591c0 | 53 | |
bd15eba3 RC |
54 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
55 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
56 | static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0}; | |
57 | ||
b54134be RC |
58 | module_param_array(index, int, NULL, 0444); |
59 | MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s)."); | |
60 | ||
c817e763 RC |
61 | int position; |
62 | ||
79dd0c69 | 63 | #define dprintk(fmt, arg...) if (debug) \ |
b2c15ea9 | 64 | printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg) |
bd15eba3 | 65 | |
b2c15ea9 RC |
66 | /* |
67 | * Main chip structure | |
68 | */ | |
bd15eba3 RC |
69 | typedef struct snd_card_saa7134 { |
70 | snd_card_t *card; | |
71 | spinlock_t mixer_lock; | |
72 | int mixer_volume[MIXER_ADDR_LAST+1][2]; | |
73 | int capture_source[MIXER_ADDR_LAST+1][2]; | |
4ac97914 | 74 | struct pci_dev *pci; |
4aabf633 | 75 | struct saa7134_dev *dev; |
bd15eba3 | 76 | |
4ac97914 MCC |
77 | unsigned long iobase; |
78 | int irq; | |
bd15eba3 RC |
79 | |
80 | spinlock_t lock; | |
81 | } snd_card_saa7134_t; | |
82 | ||
07eef6ce NS |
83 | |
84 | ||
b2c15ea9 RC |
85 | /* |
86 | * PCM structure | |
87 | */ | |
88 | ||
bd15eba3 | 89 | typedef struct snd_card_saa7134_pcm { |
4aabf633 | 90 | struct saa7134_dev *dev; |
bd15eba3 RC |
91 | |
92 | spinlock_t lock; | |
4aabf633 | 93 | |
bd15eba3 RC |
94 | snd_pcm_substream_t *substream; |
95 | } snd_card_saa7134_pcm_t; | |
5f7591c0 | 96 | |
b54134be | 97 | static snd_card_t *snd_saa7134_cards[SNDRV_CARDS]; |
5f7591c0 | 98 | |
79dd0c69 | 99 | |
b2c15ea9 RC |
100 | /* |
101 | * saa7134 DMA audio stop | |
102 | * | |
103 | * Called when the capture device is released or the buffer overflows | |
104 | * | |
c817e763 | 105 | * - Copied verbatim from saa7134-oss's dsp_dma_stop. |
b2c15ea9 RC |
106 | * |
107 | */ | |
108 | ||
bd15eba3 RC |
109 | static void saa7134_dma_stop(struct saa7134_dev *dev) |
110 | { | |
b54134be RC |
111 | dev->dmasound.dma_blk = -1; |
112 | dev->dmasound.dma_running = 0; | |
4ac97914 | 113 | saa7134_set_dmabits(dev); |
bd15eba3 | 114 | } |
5f7591c0 | 115 | |
b2c15ea9 RC |
116 | /* |
117 | * saa7134 DMA audio start | |
118 | * | |
119 | * Called when preparing the capture device for use | |
120 | * | |
c817e763 | 121 | * - Copied verbatim from saa7134-oss's dsp_dma_start. |
b2c15ea9 RC |
122 | * |
123 | */ | |
124 | ||
bd15eba3 RC |
125 | static void saa7134_dma_start(struct saa7134_dev *dev) |
126 | { | |
b54134be RC |
127 | dev->dmasound.dma_blk = 0; |
128 | dev->dmasound.dma_running = 1; | |
4ac97914 | 129 | saa7134_set_dmabits(dev); |
bd15eba3 | 130 | } |
5f7591c0 | 131 | |
b2c15ea9 RC |
132 | /* |
133 | * saa7134 audio DMA IRQ handler | |
134 | * | |
135 | * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt | |
136 | * Handles shifting between the 2 buffers, manages the read counters, | |
137 | * and notifies ALSA when periods elapse | |
138 | * | |
139 | * - Mostly copied from saa7134-oss's saa7134_irq_oss_done. | |
140 | * | |
141 | */ | |
142 | ||
bd15eba3 RC |
143 | void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status) |
144 | { | |
145 | int next_blk, reg = 0; | |
5f7591c0 | 146 | |
bd15eba3 | 147 | spin_lock(&dev->slock); |
b54134be | 148 | if (UNSET == dev->dmasound.dma_blk) { |
bd15eba3 RC |
149 | dprintk("irq: recording stopped\n"); |
150 | goto done; | |
151 | } | |
152 | if (0 != (status & 0x0f000000)) | |
153 | dprintk("irq: lost %ld\n", (status >> 24) & 0x0f); | |
154 | if (0 == (status & 0x10000000)) { | |
155 | /* odd */ | |
b54134be | 156 | if (0 == (dev->dmasound.dma_blk & 0x01)) |
bd15eba3 RC |
157 | reg = SAA7134_RS_BA1(6); |
158 | } else { | |
159 | /* even */ | |
b54134be | 160 | if (1 == (dev->dmasound.dma_blk & 0x01)) |
bd15eba3 RC |
161 | reg = SAA7134_RS_BA2(6); |
162 | } | |
163 | if (0 == reg) { | |
164 | dprintk("irq: field oops [%s]\n", | |
165 | (status & 0x10000000) ? "even" : "odd"); | |
166 | goto done; | |
167 | } | |
5f7591c0 | 168 | |
b54134be RC |
169 | if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) { |
170 | dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count, | |
171 | dev->dmasound.bufsize, dev->dmasound.blocks); | |
d5ee43af | 172 | spin_unlock(&dev->slock); |
b54134be | 173 | snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN); |
d5ee43af | 174 | return; |
bd15eba3 | 175 | } |
5f7591c0 | 176 | |
4ac97914 | 177 | /* next block addr */ |
b54134be RC |
178 | next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks; |
179 | saa_writel(reg,next_blk * dev->dmasound.blksize); | |
79dd0c69 | 180 | if (debug > 2) |
4ac97914 MCC |
181 | dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n", |
182 | (status & 0x10000000) ? "even" : "odd ", next_blk, | |
b54134be | 183 | next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count); |
5f7591c0 | 184 | |
4ac97914 | 185 | /* update status & wake waiting readers */ |
b54134be RC |
186 | dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks; |
187 | dev->dmasound.read_count += dev->dmasound.blksize; | |
5f7591c0 | 188 | |
b54134be | 189 | dev->dmasound.recording_on = reg; |
5f7591c0 | 190 | |
b54134be | 191 | if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) { |
4ac97914 | 192 | spin_unlock(&dev->slock); |
b54134be | 193 | snd_pcm_period_elapsed(dev->dmasound.substream); |
4ac97914 | 194 | spin_lock(&dev->slock); |
bd15eba3 | 195 | } |
4aabf633 | 196 | |
bd15eba3 | 197 | done: |
4ac97914 | 198 | spin_unlock(&dev->slock); |
5f7591c0 | 199 | |
bd15eba3 | 200 | } |
5f7591c0 | 201 | |
79dd0c69 RC |
202 | /* |
203 | * IRQ request handler | |
204 | * | |
205 | * Runs along with saa7134's IRQ handler, discards anything that isn't | |
206 | * DMA sound | |
207 | * | |
208 | */ | |
209 | ||
210 | static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id, struct pt_regs *regs) | |
211 | { | |
4aabf633 RC |
212 | struct saa7134_dmasound *dmasound = dev_id; |
213 | struct saa7134_dev *dev = dmasound->priv_data; | |
214 | ||
79dd0c69 RC |
215 | unsigned long report, status; |
216 | int loop, handled = 0; | |
217 | ||
218 | for (loop = 0; loop < 10; loop++) { | |
219 | report = saa_readl(SAA7134_IRQ_REPORT); | |
220 | status = saa_readl(SAA7134_IRQ_STATUS); | |
221 | ||
222 | if (report & SAA7134_IRQ_REPORT_DONE_RA3) { | |
223 | handled = 1; | |
224 | saa_writel(SAA7134_IRQ_REPORT,report); | |
225 | saa7134_irq_alsa_done(dev, status); | |
226 | } else { | |
227 | goto out; | |
228 | } | |
229 | } | |
230 | ||
231 | if (loop == 10) { | |
232 | dprintk("error! looping IRQ!"); | |
233 | } | |
234 | ||
235 | out: | |
236 | return IRQ_RETVAL(handled); | |
237 | } | |
238 | ||
b2c15ea9 RC |
239 | /* |
240 | * ALSA capture trigger | |
241 | * | |
242 | * - One of the ALSA capture callbacks. | |
243 | * | |
244 | * Called whenever a capture is started or stopped. Must be defined, | |
245 | * but there's nothing we want to do here | |
246 | * | |
247 | */ | |
5f7591c0 | 248 | |
bd15eba3 RC |
249 | static int snd_card_saa7134_capture_trigger(snd_pcm_substream_t * substream, |
250 | int cmd) | |
5f7591c0 | 251 | { |
b54134be | 252 | snd_pcm_runtime_t *runtime = substream->runtime; |
4aabf633 RC |
253 | snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
254 | struct saa7134_dev *dev=pcm->dev; | |
b54134be RC |
255 | int err = 0; |
256 | ||
d5ee43af | 257 | spin_lock(&dev->slock); |
c817e763 | 258 | if (cmd == SNDRV_PCM_TRIGGER_START) { |
b54134be RC |
259 | /* start dma */ |
260 | saa7134_dma_start(dev); | |
c817e763 | 261 | } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { |
b54134be RC |
262 | /* stop dma */ |
263 | saa7134_dma_stop(dev); | |
c817e763 RC |
264 | } else { |
265 | err = -EINVAL; | |
266 | } | |
d5ee43af | 267 | spin_unlock(&dev->slock); |
b54134be | 268 | |
c817e763 | 269 | return err; |
5f7591c0 NS |
270 | } |
271 | ||
b2c15ea9 RC |
272 | /* |
273 | * DMA buffer initialization | |
274 | * | |
275 | * Uses V4L functions to initialize the DMA. Shouldn't be necessary in | |
276 | * ALSA, but I was unable to use ALSA's own DMA, and had to force the | |
277 | * usage of V4L's | |
278 | * | |
c817e763 RC |
279 | * - Copied verbatim from saa7134-oss. |
280 | * | |
b2c15ea9 RC |
281 | */ |
282 | ||
bd15eba3 | 283 | static int dsp_buffer_init(struct saa7134_dev *dev) |
5f7591c0 | 284 | { |
4ac97914 MCC |
285 | int err; |
286 | ||
4aabf633 RC |
287 | BUG_ON(!dev->dmasound.bufsize); |
288 | ||
b54134be RC |
289 | videobuf_dma_init(&dev->dmasound.dma); |
290 | err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE, | |
291 | (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT); | |
4ac97914 MCC |
292 | if (0 != err) |
293 | return err; | |
294 | return 0; | |
5f7591c0 NS |
295 | } |
296 | ||
d5ee43af RC |
297 | /* |
298 | * DMA buffer release | |
299 | * | |
300 | * Called after closing the device, during snd_card_saa7134_capture_close | |
301 | * | |
302 | */ | |
303 | ||
304 | static int dsp_buffer_free(struct saa7134_dev *dev) | |
305 | { | |
306 | if (!dev->dmasound.blksize) | |
307 | BUG(); | |
308 | ||
309 | videobuf_dma_free(&dev->dmasound.dma); | |
310 | ||
311 | dev->dmasound.blocks = 0; | |
312 | dev->dmasound.blksize = 0; | |
313 | dev->dmasound.bufsize = 0; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | ||
b2c15ea9 RC |
319 | /* |
320 | * ALSA PCM preparation | |
321 | * | |
322 | * - One of the ALSA capture callbacks. | |
323 | * | |
324 | * Called right after the capture device is opened, this function configures | |
325 | * the buffer using the previously defined functions, allocates the memory, | |
326 | * sets up the hardware registers, and then starts the DMA. When this function | |
327 | * returns, the audio should be flowing. | |
328 | * | |
329 | */ | |
5f7591c0 | 330 | |
b2c15ea9 | 331 | static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream) |
5f7591c0 | 332 | { |
bd15eba3 | 333 | snd_pcm_runtime_t *runtime = substream->runtime; |
d5ee43af | 334 | int bswap, sign; |
4ac97914 | 335 | u32 fmt, control; |
bd15eba3 | 336 | snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
4ac97914 | 337 | struct saa7134_dev *dev; |
4aabf633 | 338 | snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
bd15eba3 | 339 | |
4aabf633 | 340 | pcm->dev->dmasound.substream = substream; |
bd15eba3 | 341 | |
d5ee43af | 342 | dev = saa7134->dev; |
bd15eba3 | 343 | |
d5ee43af | 344 | if (snd_pcm_format_width(runtime->format) == 8) |
bd15eba3 | 345 | fmt = 0x00; |
d5ee43af | 346 | else |
bd15eba3 | 347 | fmt = 0x01; |
4ac97914 | 348 | |
d5ee43af | 349 | if (snd_pcm_format_signed(runtime->format)) |
bd15eba3 | 350 | sign = 1; |
d5ee43af | 351 | else |
bd15eba3 | 352 | sign = 0; |
bd15eba3 | 353 | |
d5ee43af RC |
354 | if (snd_pcm_format_big_endian(runtime->format)) |
355 | bswap = 1; | |
356 | else | |
357 | bswap = 0; | |
4ac97914 MCC |
358 | |
359 | switch (dev->pci->device) { | |
360 | case PCI_DEVICE_ID_PHILIPS_SAA7134: | |
361 | if (1 == runtime->channels) | |
362 | fmt |= (1 << 3); | |
363 | if (2 == runtime->channels) | |
364 | fmt |= (3 << 3); | |
365 | if (sign) | |
366 | fmt |= 0x04; | |
367 | ||
b54134be RC |
368 | fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80; |
369 | saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff)); | |
370 | saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8); | |
371 | saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16); | |
4ac97914 MCC |
372 | saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt); |
373 | ||
374 | break; | |
375 | case PCI_DEVICE_ID_PHILIPS_SAA7133: | |
376 | case PCI_DEVICE_ID_PHILIPS_SAA7135: | |
377 | if (1 == runtime->channels) | |
378 | fmt |= (1 << 4); | |
379 | if (2 == runtime->channels) | |
380 | fmt |= (2 << 4); | |
381 | if (!sign) | |
382 | fmt |= 0x04; | |
b54134be | 383 | saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1); |
4ac97914 | 384 | saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24)); |
4ac97914 MCC |
385 | break; |
386 | } | |
387 | ||
388 | dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n", | |
389 | runtime->format, runtime->channels, fmt, | |
390 | bswap ? 'b' : '-'); | |
391 | /* dma: setup channel 6 (= AUDIO) */ | |
392 | control = SAA7134_RS_CONTROL_BURST_16 | | |
393 | SAA7134_RS_CONTROL_ME | | |
b54134be | 394 | (dev->dmasound.pt.dma >> 12); |
4ac97914 MCC |
395 | if (bswap) |
396 | control |= SAA7134_RS_CONTROL_BSWAP; | |
bd15eba3 | 397 | |
4ac97914 | 398 | saa_writel(SAA7134_RS_BA1(6),0); |
b54134be | 399 | saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize); |
4ac97914 MCC |
400 | saa_writel(SAA7134_RS_PITCH(6),0); |
401 | saa_writel(SAA7134_RS_CONTROL(6),control); | |
bd15eba3 | 402 | |
b54134be | 403 | dev->dmasound.rate = runtime->rate; |
5f7591c0 | 404 | |
bd15eba3 | 405 | return 0; |
5f7591c0 | 406 | |
bd15eba3 | 407 | } |
5f7591c0 | 408 | |
b2c15ea9 RC |
409 | /* |
410 | * ALSA pointer fetching | |
411 | * | |
412 | * - One of the ALSA capture callbacks. | |
413 | * | |
414 | * Called whenever a period elapses, it must return the current hardware | |
415 | * position of the buffer. | |
416 | * Also resets the read counter used to prevent overruns | |
417 | * | |
418 | */ | |
5f7591c0 | 419 | |
b2c15ea9 | 420 | static snd_pcm_uframes_t snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream) |
5f7591c0 | 421 | { |
5f7591c0 | 422 | snd_pcm_runtime_t *runtime = substream->runtime; |
4aabf633 RC |
423 | snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
424 | struct saa7134_dev *dev=pcm->dev; | |
5f7591c0 | 425 | |
b54134be RC |
426 | if (dev->dmasound.read_count) { |
427 | dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream); | |
428 | dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream); | |
429 | if (dev->dmasound.read_offset == dev->dmasound.bufsize) | |
430 | dev->dmasound.read_offset = 0; | |
bd15eba3 | 431 | } |
5f7591c0 | 432 | |
b54134be | 433 | return bytes_to_frames(runtime, dev->dmasound.read_offset); |
bd15eba3 | 434 | } |
5f7591c0 | 435 | |
b2c15ea9 RC |
436 | /* |
437 | * ALSA hardware capabilities definition | |
438 | */ | |
5f7591c0 | 439 | |
bd15eba3 | 440 | static snd_pcm_hardware_t snd_card_saa7134_capture = |
5f7591c0 | 441 | { |
4ac97914 | 442 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
f2421ca3 MCC |
443 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
444 | SNDRV_PCM_INFO_MMAP_VALID), | |
b54134be RC |
445 | .formats = SNDRV_PCM_FMTBIT_S16_LE | \ |
446 | SNDRV_PCM_FMTBIT_S16_BE | \ | |
447 | SNDRV_PCM_FMTBIT_S8 | \ | |
448 | SNDRV_PCM_FMTBIT_U8 | \ | |
449 | SNDRV_PCM_FMTBIT_U16_LE | \ | |
450 | SNDRV_PCM_FMTBIT_U16_BE, | |
451 | .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, | |
452 | .rate_min = 32000, | |
453 | .rate_max = 48000, | |
454 | .channels_min = 1, | |
455 | .channels_max = 2, | |
456 | .buffer_bytes_max = (256*1024), | |
bd15eba3 | 457 | .period_bytes_min = 64, |
b54134be RC |
458 | .period_bytes_max = (256*1024), |
459 | .periods_min = 2, | |
460 | .periods_max = 1024, | |
bd15eba3 | 461 | }; |
5f7591c0 | 462 | |
bd15eba3 RC |
463 | static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime) |
464 | { | |
4aabf633 | 465 | snd_card_saa7134_pcm_t *pcm = runtime->private_data; |
bd15eba3 | 466 | |
4aabf633 | 467 | kfree(pcm); |
5f7591c0 NS |
468 | } |
469 | ||
bd15eba3 | 470 | |
b2c15ea9 RC |
471 | /* |
472 | * ALSA hardware params | |
473 | * | |
474 | * - One of the ALSA capture callbacks. | |
475 | * | |
476 | * Called on initialization, right before the PCM preparation | |
b2c15ea9 RC |
477 | * |
478 | */ | |
479 | ||
bd15eba3 RC |
480 | static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream, |
481 | snd_pcm_hw_params_t * hw_params) | |
5f7591c0 | 482 | { |
d5ee43af RC |
483 | snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
484 | struct saa7134_dev *dev; | |
485 | unsigned int period_size, periods; | |
486 | int err; | |
487 | ||
488 | period_size = params_period_bytes(hw_params); | |
489 | periods = params_periods(hw_params); | |
490 | ||
491 | snd_assert(period_size >= 0x100 && period_size <= 0x10000, | |
492 | return -EINVAL); | |
493 | snd_assert(periods >= 2, return -EINVAL); | |
494 | snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL); | |
495 | ||
496 | dev = saa7134->dev; | |
497 | ||
498 | if (dev->dmasound.blocks == periods && | |
499 | dev->dmasound.blksize == period_size) | |
500 | return 0; | |
501 | ||
502 | /* release the old buffer */ | |
503 | if (substream->runtime->dma_area) { | |
504 | saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); | |
505 | videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma); | |
506 | dsp_buffer_free(dev); | |
507 | substream->runtime->dma_area = NULL; | |
508 | } | |
509 | dev->dmasound.blocks = periods; | |
510 | dev->dmasound.blksize = period_size; | |
511 | dev->dmasound.bufsize = period_size * periods; | |
512 | ||
513 | err = dsp_buffer_init(dev); | |
514 | if (0 != err) { | |
515 | dev->dmasound.blocks = 0; | |
516 | dev->dmasound.blksize = 0; | |
517 | dev->dmasound.bufsize = 0; | |
518 | return err; | |
519 | } | |
520 | ||
521 | if (0 != (err = videobuf_dma_pci_map(dev->pci, &dev->dmasound.dma))) { | |
522 | dsp_buffer_free(dev); | |
523 | return err; | |
524 | } | |
525 | if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) { | |
526 | videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma); | |
527 | dsp_buffer_free(dev); | |
528 | return err; | |
529 | } | |
530 | if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt, | |
531 | dev->dmasound.dma.sglist, | |
532 | dev->dmasound.dma.sglen, | |
533 | 0))) { | |
534 | saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); | |
535 | videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma); | |
536 | dsp_buffer_free(dev); | |
537 | return err; | |
538 | } | |
539 | ||
540 | /* I should be able to use runtime->dma_addr in the control | |
541 | byte, but it doesn't work. So I allocate the DMA using the | |
542 | V4L functions, and force ALSA to use that as the DMA area */ | |
543 | ||
544 | substream->runtime->dma_area = dev->dmasound.dma.vmalloc; | |
545 | ||
546 | return 1; | |
bd15eba3 | 547 | |
5f7591c0 NS |
548 | } |
549 | ||
b2c15ea9 RC |
550 | /* |
551 | * ALSA hardware release | |
552 | * | |
553 | * - One of the ALSA capture callbacks. | |
554 | * | |
555 | * Called after closing the device, but before snd_card_saa7134_capture_close | |
d5ee43af | 556 | * It stops the DMA audio and releases the buffers. |
b2c15ea9 RC |
557 | * |
558 | */ | |
559 | ||
bd15eba3 | 560 | static int snd_card_saa7134_hw_free(snd_pcm_substream_t * substream) |
5f7591c0 | 561 | { |
d5ee43af RC |
562 | snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
563 | struct saa7134_dev *dev; | |
5f7591c0 | 564 | |
d5ee43af | 565 | dev = saa7134->dev; |
5f7591c0 | 566 | |
d5ee43af RC |
567 | if (substream->runtime->dma_area) { |
568 | saa7134_pgtable_free(dev->pci, &dev->dmasound.pt); | |
569 | videobuf_dma_pci_unmap(dev->pci, &dev->dmasound.dma); | |
570 | dsp_buffer_free(dev); | |
571 | substream->runtime->dma_area = NULL; | |
572 | } | |
bd15eba3 | 573 | |
4ac97914 | 574 | return 0; |
5f7591c0 NS |
575 | } |
576 | ||
b2c15ea9 RC |
577 | /* |
578 | * ALSA capture finish | |
579 | * | |
580 | * - One of the ALSA capture callbacks. | |
581 | * | |
d5ee43af | 582 | * Called after closing the device. |
b2c15ea9 RC |
583 | * |
584 | */ | |
bd15eba3 | 585 | |
b2c15ea9 | 586 | static int snd_card_saa7134_capture_close(snd_pcm_substream_t * substream) |
5f7591c0 | 587 | { |
4ac97914 | 588 | return 0; |
5f7591c0 NS |
589 | } |
590 | ||
b2c15ea9 RC |
591 | /* |
592 | * ALSA capture start | |
593 | * | |
594 | * - One of the ALSA capture callbacks. | |
595 | * | |
596 | * Called when opening the device. It creates and populates the PCM | |
597 | * structure | |
598 | * | |
599 | */ | |
5f7591c0 | 600 | |
b2c15ea9 RC |
601 | static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream) |
602 | { | |
603 | snd_pcm_runtime_t *runtime = substream->runtime; | |
4aabf633 | 604 | snd_card_saa7134_pcm_t *pcm; |
4ac97914 | 605 | snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream); |
4aabf633 | 606 | struct saa7134_dev *dev = saa7134->dev; |
b2c15ea9 | 607 | int err; |
5f7591c0 | 608 | |
b54134be | 609 | down(&dev->dmasound.lock); |
5f7591c0 | 610 | |
b54134be RC |
611 | dev->dmasound.read_count = 0; |
612 | dev->dmasound.read_offset = 0; | |
bd15eba3 | 613 | |
b54134be | 614 | up(&dev->dmasound.lock); |
5f7591c0 | 615 | |
4aabf633 RC |
616 | pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); |
617 | if (pcm == NULL) | |
bd15eba3 | 618 | return -ENOMEM; |
bd15eba3 | 619 | |
4aabf633 RC |
620 | pcm->dev=saa7134->dev; |
621 | ||
622 | spin_lock_init(&pcm->lock); | |
bd15eba3 | 623 | |
4aabf633 RC |
624 | pcm->substream = substream; |
625 | runtime->private_data = pcm; | |
bd15eba3 RC |
626 | runtime->private_free = snd_card_saa7134_runtime_free; |
627 | runtime->hw = snd_card_saa7134_capture; | |
628 | ||
4ac97914 MCC |
629 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) |
630 | return err; | |
5f7591c0 NS |
631 | |
632 | return 0; | |
633 | } | |
634 | ||
b2c15ea9 RC |
635 | /* |
636 | * ALSA capture callbacks definition | |
637 | */ | |
5f7591c0 | 638 | |
bd15eba3 RC |
639 | static snd_pcm_ops_t snd_card_saa7134_capture_ops = { |
640 | .open = snd_card_saa7134_capture_open, | |
641 | .close = snd_card_saa7134_capture_close, | |
642 | .ioctl = snd_pcm_lib_ioctl, | |
643 | .hw_params = snd_card_saa7134_hw_params, | |
644 | .hw_free = snd_card_saa7134_hw_free, | |
645 | .prepare = snd_card_saa7134_capture_prepare, | |
646 | .trigger = snd_card_saa7134_capture_trigger, | |
647 | .pointer = snd_card_saa7134_capture_pointer, | |
5f7591c0 NS |
648 | }; |
649 | ||
b2c15ea9 RC |
650 | /* |
651 | * ALSA PCM setup | |
652 | * | |
653 | * Called when initializing the board. Sets up the name and hooks up | |
654 | * the callbacks | |
655 | * | |
656 | */ | |
657 | ||
658 | static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device) | |
bd15eba3 RC |
659 | { |
660 | snd_pcm_t *pcm; | |
661 | int err; | |
5f7591c0 | 662 | |
bd15eba3 RC |
663 | if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0) |
664 | return err; | |
665 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops); | |
666 | pcm->private_data = saa7134; | |
667 | pcm->info_flags = 0; | |
668 | strcpy(pcm->name, "SAA7134 PCM"); | |
bd15eba3 RC |
669 | return 0; |
670 | } | |
5f7591c0 | 671 | |
bd15eba3 RC |
672 | #define SAA713x_VOLUME(xname, xindex, addr) \ |
673 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
674 | .info = snd_saa7134_volume_info, \ | |
675 | .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \ | |
676 | .private_value = addr } | |
5f7591c0 | 677 | |
bd15eba3 RC |
678 | static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo) |
679 | { | |
680 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
681 | uinfo->count = 2; | |
682 | uinfo->value.integer.min = 0; | |
683 | uinfo->value.integer.max = 20; | |
684 | return 0; | |
685 | } | |
5f7591c0 | 686 | |
bd15eba3 RC |
687 | static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) |
688 | { | |
689 | snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); | |
bd15eba3 RC |
690 | int addr = kcontrol->private_value; |
691 | ||
bd15eba3 RC |
692 | ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0]; |
693 | ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1]; | |
bd15eba3 RC |
694 | return 0; |
695 | } | |
5f7591c0 | 696 | |
bd15eba3 | 697 | static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) |
5f7591c0 | 698 | { |
bd15eba3 | 699 | snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
bd15eba3 RC |
700 | int change, addr = kcontrol->private_value; |
701 | int left, right; | |
702 | ||
703 | left = ucontrol->value.integer.value[0]; | |
704 | if (left < 0) | |
705 | left = 0; | |
706 | if (left > 20) | |
707 | left = 20; | |
708 | right = ucontrol->value.integer.value[1]; | |
709 | if (right < 0) | |
710 | right = 0; | |
711 | if (right > 20) | |
712 | right = 20; | |
d5ee43af | 713 | spin_lock_irq(&chip->mixer_lock); |
bd15eba3 | 714 | change = chip->mixer_volume[addr][0] != left || |
4ac97914 | 715 | chip->mixer_volume[addr][1] != right; |
bd15eba3 RC |
716 | chip->mixer_volume[addr][0] = left; |
717 | chip->mixer_volume[addr][1] = right; | |
d5ee43af | 718 | spin_unlock_irq(&chip->mixer_lock); |
bd15eba3 RC |
719 | return change; |
720 | } | |
5f7591c0 | 721 | |
bd15eba3 RC |
722 | #define SAA713x_CAPSRC(xname, xindex, addr) \ |
723 | { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ | |
724 | .info = snd_saa7134_capsrc_info, \ | |
725 | .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \ | |
726 | .private_value = addr } | |
5f7591c0 | 727 | |
bd15eba3 RC |
728 | static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo) |
729 | { | |
730 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
b2c15ea9 | 731 | uinfo->count = 2; |
bd15eba3 RC |
732 | uinfo->value.integer.min = 0; |
733 | uinfo->value.integer.max = 1; | |
734 | return 0; | |
735 | } | |
5f7591c0 | 736 | |
bd15eba3 RC |
737 | static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) |
738 | { | |
739 | snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); | |
bd15eba3 RC |
740 | int addr = kcontrol->private_value; |
741 | ||
d5ee43af | 742 | spin_lock_irq(&chip->mixer_lock); |
bd15eba3 RC |
743 | ucontrol->value.integer.value[0] = chip->capture_source[addr][0]; |
744 | ucontrol->value.integer.value[1] = chip->capture_source[addr][1]; | |
d5ee43af | 745 | spin_unlock_irq(&chip->mixer_lock); |
4aabf633 | 746 | |
5f7591c0 NS |
747 | return 0; |
748 | } | |
749 | ||
bd15eba3 | 750 | static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) |
5f7591c0 | 751 | { |
bd15eba3 | 752 | snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol); |
bd15eba3 RC |
753 | int change, addr = kcontrol->private_value; |
754 | int left, right; | |
4ac97914 | 755 | u32 anabar, xbarin; |
bd15eba3 RC |
756 | int analog_io, rate; |
757 | struct saa7134_dev *dev; | |
758 | ||
4aabf633 | 759 | dev = chip->dev; |
bd15eba3 RC |
760 | |
761 | left = ucontrol->value.integer.value[0] & 1; | |
762 | right = ucontrol->value.integer.value[1] & 1; | |
c817e763 | 763 | spin_lock_irq(&chip->mixer_lock); |
bd15eba3 | 764 | |
b2c15ea9 | 765 | change = chip->capture_source[addr][0] != left || |
4ac97914 | 766 | chip->capture_source[addr][1] != right; |
bd15eba3 RC |
767 | chip->capture_source[addr][0] = left; |
768 | chip->capture_source[addr][1] = right; | |
b54134be | 769 | dev->dmasound.input=addr; |
c817e763 | 770 | spin_unlock_irq(&chip->mixer_lock); |
bd15eba3 RC |
771 | |
772 | ||
b2c15ea9 | 773 | if (change) { |
4ac97914 | 774 | switch (dev->pci->device) { |
bd15eba3 RC |
775 | |
776 | case PCI_DEVICE_ID_PHILIPS_SAA7134: | |
4ac97914 MCC |
777 | switch (addr) { |
778 | case MIXER_ADDR_TVTUNER: | |
779 | saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0); | |
780 | saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00); | |
781 | break; | |
782 | case MIXER_ADDR_LINE1: | |
783 | case MIXER_ADDR_LINE2: | |
784 | analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08; | |
b54134be | 785 | rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03; |
4ac97914 MCC |
786 | saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io); |
787 | saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80); | |
788 | saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate); | |
789 | break; | |
790 | } | |
791 | ||
792 | break; | |
bd15eba3 RC |
793 | case PCI_DEVICE_ID_PHILIPS_SAA7133: |
794 | case PCI_DEVICE_ID_PHILIPS_SAA7135: | |
4ac97914 | 795 | xbarin = 0x03; // adc |
bd15eba3 | 796 | anabar = 0; |
4ac97914 MCC |
797 | switch (addr) { |
798 | case MIXER_ADDR_TVTUNER: | |
799 | xbarin = 0; // Demodulator | |
800 | anabar = 2; // DACs | |
801 | break; | |
802 | case MIXER_ADDR_LINE1: | |
803 | anabar = 0; // aux1, aux1 | |
804 | break; | |
805 | case MIXER_ADDR_LINE2: | |
806 | anabar = 9; // aux2, aux2 | |
807 | break; | |
808 | } | |
bd15eba3 RC |
809 | |
810 | /* output xbar always main channel */ | |
4ac97914 | 811 | saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10); |
bd15eba3 RC |
812 | |
813 | if (left || right) { // We've got data, turn the input on | |
4ac97914 MCC |
814 | saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin); |
815 | saa_writel(SAA7133_ANALOG_IO_SELECT, anabar); | |
bd15eba3 | 816 | } else { |
4ac97914 MCC |
817 | saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0); |
818 | saa_writel(SAA7133_ANALOG_IO_SELECT, 0); | |
bd15eba3 | 819 | } |
a866623c | 820 | break; |
b2c15ea9 | 821 | } |
4ac97914 | 822 | } |
bd15eba3 RC |
823 | |
824 | return change; | |
5f7591c0 NS |
825 | } |
826 | ||
bd15eba3 RC |
827 | static snd_kcontrol_new_t snd_saa7134_controls[] = { |
828 | SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER), | |
829 | SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER), | |
830 | SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1), | |
831 | SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1), | |
832 | SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2), | |
833 | SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2), | |
834 | }; | |
5f7591c0 | 835 | |
b2c15ea9 RC |
836 | /* |
837 | * ALSA mixer setup | |
838 | * | |
839 | * Called when initializing the board. Sets up the name and hooks up | |
840 | * the callbacks | |
841 | * | |
842 | */ | |
843 | ||
844 | static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip) | |
bd15eba3 RC |
845 | { |
846 | snd_card_t *card = chip->card; | |
847 | unsigned int idx; | |
848 | int err; | |
849 | ||
850 | snd_assert(chip != NULL, return -EINVAL); | |
851 | strcpy(card->mixername, "SAA7134 Mixer"); | |
5f7591c0 | 852 | |
bd15eba3 RC |
853 | for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) { |
854 | if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0) | |
855 | return err; | |
856 | } | |
857 | return 0; | |
858 | } | |
859 | ||
c817e763 | 860 | static void snd_saa7134_free(snd_card_t * card) |
5f7591c0 | 861 | { |
d5ee43af | 862 | snd_card_saa7134_t *chip = card->private_data; |
c817e763 | 863 | |
4aabf633 | 864 | if (chip->dev->dmasound.priv_data == NULL) |
d5ee43af | 865 | return; |
4aabf633 | 866 | |
c817e763 RC |
867 | if (chip->irq >= 0) { |
868 | synchronize_irq(chip->irq); | |
4aabf633 | 869 | free_irq(chip->irq, &chip->dev->dmasound); |
c817e763 RC |
870 | } |
871 | ||
4aabf633 RC |
872 | chip->dev->dmasound.priv_data = NULL; |
873 | ||
bd15eba3 | 874 | } |
5f7591c0 | 875 | |
b2c15ea9 RC |
876 | /* |
877 | * ALSA initialization | |
878 | * | |
c817e763 RC |
879 | * Called by the init routine, once for each saa7134 device present, |
880 | * it creates the basic structures and registers the ALSA devices | |
b2c15ea9 RC |
881 | * |
882 | */ | |
883 | ||
4aabf633 | 884 | int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum) |
bd15eba3 | 885 | { |
79dd0c69 | 886 | |
bd15eba3 | 887 | snd_card_t *card; |
b2c15ea9 | 888 | snd_card_saa7134_t *chip; |
bd15eba3 | 889 | int err; |
5f7591c0 | 890 | |
79dd0c69 | 891 | |
4aabf633 | 892 | if (devnum >= SNDRV_CARDS) |
4ac97914 | 893 | return -ENODEV; |
4aabf633 | 894 | if (!enable[devnum]) |
bd15eba3 | 895 | return -ENODEV; |
b2c15ea9 | 896 | |
4aabf633 | 897 | card = snd_card_new(index[devnum], id[devnum], THIS_MODULE, sizeof(snd_card_saa7134_t)); |
b54134be | 898 | |
bd15eba3 RC |
899 | if (card == NULL) |
900 | return -ENOMEM; | |
5f7591c0 | 901 | |
bd15eba3 | 902 | strcpy(card->driver, "SAA7134"); |
5f7591c0 | 903 | |
bd15eba3 | 904 | /* Card "creation" */ |
b2c15ea9 | 905 | |
c817e763 RC |
906 | card->private_free = snd_saa7134_free; |
907 | chip = (snd_card_saa7134_t *) card->private_data; | |
5f7591c0 | 908 | |
4ac97914 | 909 | spin_lock_init(&chip->lock); |
b54134be | 910 | spin_lock_init(&chip->mixer_lock); |
5f7591c0 | 911 | |
4aabf633 | 912 | chip->dev = dev; |
5f7591c0 | 913 | |
4ac97914 | 914 | chip->card = card; |
b2c15ea9 | 915 | |
4aabf633 | 916 | chip->pci = dev->pci; |
4aabf633 RC |
917 | chip->iobase = pci_resource_start(dev->pci, 0); |
918 | ||
5f7591c0 | 919 | |
4aabf633 RC |
920 | err = request_irq(dev->pci->irq, saa7134_alsa_irq, |
921 | SA_SHIRQ | SA_INTERRUPT, dev->name, | |
922 | (void*) &dev->dmasound); | |
79dd0c69 RC |
923 | |
924 | if (err < 0) { | |
925 | printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n", | |
4aabf633 | 926 | dev->name, dev->pci->irq); |
b54134be | 927 | goto __nodev; |
79dd0c69 RC |
928 | } |
929 | ||
d5ee43af | 930 | chip->irq = dev->pci->irq; |
4aabf633 | 931 | |
d5ee43af | 932 | init_MUTEX(&dev->dmasound.lock); |
5f7591c0 | 933 | |
bd15eba3 RC |
934 | if ((err = snd_card_saa7134_new_mixer(chip)) < 0) |
935 | goto __nodev; | |
5f7591c0 | 936 | |
bd15eba3 RC |
937 | if ((err = snd_card_saa7134_pcm(chip, 0)) < 0) |
938 | goto __nodev; | |
b2c15ea9 | 939 | |
bd15eba3 | 940 | snd_card_set_dev(card, &chip->pci->dev); |
5f7591c0 | 941 | |
bd15eba3 | 942 | /* End of "creation" */ |
5f7591c0 | 943 | |
bd15eba3 | 944 | strcpy(card->shortname, "SAA7134"); |
4ac97914 | 945 | sprintf(card->longname, "%s at 0x%lx irq %d", |
4aabf633 | 946 | chip->dev->name, chip->iobase, chip->irq); |
5f7591c0 | 947 | |
bd15eba3 | 948 | if ((err = snd_card_register(card)) == 0) { |
4aabf633 | 949 | snd_saa7134_cards[devnum] = card; |
bd15eba3 RC |
950 | return 0; |
951 | } | |
952 | ||
953 | __nodev: | |
954 | snd_card_free(card); | |
bd15eba3 | 955 | return err; |
5f7591c0 NS |
956 | } |
957 | ||
79dd0c69 RC |
958 | /* |
959 | * Module initializer | |
960 | * | |
961 | * Loops through present saa7134 cards, and assigns an ALSA device | |
962 | * to each one | |
963 | * | |
964 | */ | |
965 | ||
966 | static int saa7134_alsa_init(void) | |
967 | { | |
4aabf633 | 968 | struct saa7134_dev *dev = NULL; |
c817e763 | 969 | struct list_head *list; |
79dd0c69 | 970 | |
c817e763 | 971 | position = 0; |
79dd0c69 | 972 | |
c817e763 RC |
973 | printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n"); |
974 | ||
975 | list_for_each(list,&saa7134_devlist) { | |
4aabf633 RC |
976 | dev = list_entry(list, struct saa7134_dev, devlist); |
977 | if (dev->dmasound.priv_data == NULL) { | |
978 | dev->dmasound.priv_data = dev; | |
979 | alsa_card_saa7134_create(dev,position); | |
980 | position++; | |
981 | } else { | |
982 | printk(KERN_ERR "saa7134 ALSA: DMA sound is being handled by OSS. ignoring %s\n",dev->name); | |
983 | return -EBUSY; | |
984 | } | |
c817e763 | 985 | } |
79dd0c69 | 986 | |
4aabf633 | 987 | if (dev == NULL) |
79dd0c69 RC |
988 | printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n"); |
989 | ||
990 | return 0; | |
79dd0c69 RC |
991 | } |
992 | ||
993 | /* | |
994 | * Module destructor | |
995 | */ | |
996 | ||
997 | void saa7134_alsa_exit(void) | |
5f7591c0 | 998 | { |
4ac97914 | 999 | int idx; |
b54134be | 1000 | |
79dd0c69 | 1001 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
4ac97914 | 1002 | snd_card_free(snd_saa7134_cards[idx]); |
bd15eba3 | 1003 | } |
b54134be | 1004 | |
79dd0c69 | 1005 | printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n"); |
b54134be | 1006 | |
79dd0c69 | 1007 | return; |
5f7591c0 | 1008 | } |
79dd0c69 RC |
1009 | |
1010 | module_init(saa7134_alsa_init); | |
1011 | module_exit(saa7134_alsa_exit); | |
1012 | MODULE_LICENSE("GPL"); | |
1013 | MODULE_AUTHOR("Ricardo Cerqueira"); |