2 * SAA713x ALSA support for V4L
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, version 2
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/time.h>
22 #include <linux/wait.h>
23 #include <linux/module.h>
24 #include <sound/core.h>
25 #include <sound/control.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/initval.h>
29 #include <linux/interrupt.h>
32 #include "saa7134-reg.h"
34 static unsigned int debug;
35 module_param(debug, int, 0644);
36 MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
39 * Configuration macros
43 #define MIXER_ADDR_TVTUNER 0
44 #define MIXER_ADDR_LINE1 1
45 #define MIXER_ADDR_LINE2 2
46 #define MIXER_ADDR_LAST 2
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
51 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
53 module_param_array(index, int, NULL, 0444);
54 module_param_array(enable, int, NULL, 0444);
55 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
56 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
58 #define dprintk(fmt, arg...) if (debug) \
59 printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ##arg)
67 typedef struct snd_card_saa7134 {
68 struct snd_card *card;
69 spinlock_t mixer_lock;
70 int mixer_volume[MIXER_ADDR_LAST+1][2];
71 int capture_source[MIXER_ADDR_LAST+1][2];
73 struct saa7134_dev *dev;
87 typedef struct snd_card_saa7134_pcm {
88 struct saa7134_dev *dev;
92 struct snd_pcm_substream *substream;
93 } snd_card_saa7134_pcm_t;
95 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
99 * saa7134 DMA audio stop
101 * Called when the capture device is released or the buffer overflows
103 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
107 static void saa7134_dma_stop(struct saa7134_dev *dev)
109 dev->dmasound.dma_blk = -1;
110 dev->dmasound.dma_running = 0;
111 saa7134_set_dmabits(dev);
115 * saa7134 DMA audio start
117 * Called when preparing the capture device for use
119 * - Copied verbatim from saa7134-oss's dsp_dma_start.
123 static void saa7134_dma_start(struct saa7134_dev *dev)
125 dev->dmasound.dma_blk = 0;
126 dev->dmasound.dma_running = 1;
127 saa7134_set_dmabits(dev);
131 * saa7134 audio DMA IRQ handler
133 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
134 * Handles shifting between the 2 buffers, manages the read counters,
135 * and notifies ALSA when periods elapse
137 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
141 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
142 unsigned long status)
144 int next_blk, reg = 0;
146 spin_lock(&dev->slock);
147 if (UNSET == dev->dmasound.dma_blk) {
148 dprintk("irq: recording stopped\n");
151 if (0 != (status & 0x0f000000))
152 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
153 if (0 == (status & 0x10000000)) {
155 if (0 == (dev->dmasound.dma_blk & 0x01))
156 reg = SAA7134_RS_BA1(6);
159 if (1 == (dev->dmasound.dma_blk & 0x01))
160 reg = SAA7134_RS_BA2(6);
163 dprintk("irq: field oops [%s]\n",
164 (status & 0x10000000) ? "even" : "odd");
168 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
169 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->dmasound.read_count,
170 dev->dmasound.bufsize, dev->dmasound.blocks);
171 spin_unlock(&dev->slock);
172 snd_pcm_stop(dev->dmasound.substream,SNDRV_PCM_STATE_XRUN);
176 /* next block addr */
177 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
178 saa_writel(reg,next_blk * dev->dmasound.blksize);
180 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
181 (status & 0x10000000) ? "even" : "odd ", next_blk,
182 next_blk * dev->dmasound.blksize, dev->dmasound.blocks, dev->dmasound.blksize, dev->dmasound.read_count);
184 /* update status & wake waiting readers */
185 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
186 dev->dmasound.read_count += dev->dmasound.blksize;
188 dev->dmasound.recording_on = reg;
190 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
191 spin_unlock(&dev->slock);
192 snd_pcm_period_elapsed(dev->dmasound.substream);
193 spin_lock(&dev->slock);
197 spin_unlock(&dev->slock);
202 * IRQ request handler
204 * Runs along with saa7134's IRQ handler, discards anything that isn't
209 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
211 struct saa7134_dmasound *dmasound = dev_id;
212 struct saa7134_dev *dev = dmasound->priv_data;
214 unsigned long report, status;
215 int loop, handled = 0;
217 for (loop = 0; loop < 10; loop++) {
218 report = saa_readl(SAA7134_IRQ_REPORT);
219 status = saa_readl(SAA7134_IRQ_STATUS);
221 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
223 saa_writel(SAA7134_IRQ_REPORT,
224 SAA7134_IRQ_REPORT_DONE_RA3);
225 saa7134_irq_alsa_done(dev, status);
232 dprintk("error! looping IRQ!");
236 return IRQ_RETVAL(handled);
240 * ALSA capture trigger
242 * - One of the ALSA capture callbacks.
244 * Called whenever a capture is started or stopped. Must be defined,
245 * but there's nothing we want to do here
249 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
252 struct snd_pcm_runtime *runtime = substream->runtime;
253 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
254 struct saa7134_dev *dev=pcm->dev;
257 spin_lock(&dev->slock);
258 if (cmd == SNDRV_PCM_TRIGGER_START) {
260 saa7134_dma_start(dev);
261 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
263 saa7134_dma_stop(dev);
267 spin_unlock(&dev->slock);
273 * DMA buffer initialization
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
279 * - Copied verbatim from saa7134-oss.
283 static int dsp_buffer_init(struct saa7134_dev *dev)
287 BUG_ON(!dev->dmasound.bufsize);
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);
300 * Called after closing the device, during snd_card_saa7134_capture_close
304 static int dsp_buffer_free(struct saa7134_dev *dev)
306 BUG_ON(!dev->dmasound.blksize);
308 videobuf_dma_free(&dev->dmasound.dma);
310 dev->dmasound.blocks = 0;
311 dev->dmasound.blksize = 0;
312 dev->dmasound.bufsize = 0;
319 * ALSA PCM preparation
321 * - One of the ALSA capture callbacks.
323 * Called right after the capture device is opened, this function configures
324 * the buffer using the previously defined functions, allocates the memory,
325 * sets up the hardware registers, and then starts the DMA. When this function
326 * returns, the audio should be flowing.
330 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
332 struct snd_pcm_runtime *runtime = substream->runtime;
335 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
336 struct saa7134_dev *dev;
337 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
339 pcm->dev->dmasound.substream = substream;
343 if (snd_pcm_format_width(runtime->format) == 8)
348 if (snd_pcm_format_signed(runtime->format))
353 if (snd_pcm_format_big_endian(runtime->format))
358 switch (dev->pci->device) {
359 case PCI_DEVICE_ID_PHILIPS_SAA7134:
360 if (1 == runtime->channels)
362 if (2 == runtime->channels)
367 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
368 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
369 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
370 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
371 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
374 case PCI_DEVICE_ID_PHILIPS_SAA7133:
375 case PCI_DEVICE_ID_PHILIPS_SAA7135:
376 if (1 == runtime->channels)
378 if (2 == runtime->channels)
382 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
383 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
387 dprintk("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
388 runtime->format, runtime->channels, fmt,
390 /* dma: setup channel 6 (= AUDIO) */
391 control = SAA7134_RS_CONTROL_BURST_16 |
392 SAA7134_RS_CONTROL_ME |
393 (dev->dmasound.pt.dma >> 12);
395 control |= SAA7134_RS_CONTROL_BSWAP;
397 saa_writel(SAA7134_RS_BA1(6),0);
398 saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
399 saa_writel(SAA7134_RS_PITCH(6),0);
400 saa_writel(SAA7134_RS_CONTROL(6),control);
402 dev->dmasound.rate = runtime->rate;
409 * ALSA pointer fetching
411 * - One of the ALSA capture callbacks.
413 * Called whenever a period elapses, it must return the current hardware
414 * position of the buffer.
415 * Also resets the read counter used to prevent overruns
419 static snd_pcm_uframes_t
420 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
422 struct snd_pcm_runtime *runtime = substream->runtime;
423 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
424 struct saa7134_dev *dev=pcm->dev;
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;
433 return bytes_to_frames(runtime, dev->dmasound.read_offset);
437 * ALSA hardware capabilities definition
439 * Report only 32kHz for ALSA:
441 * - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz
443 * - SAA7134 for TV mode uses DemDec mode (32kHz)
444 * - Radio works in 32kHz only
445 * - When recording 48kHz from Line1/Line2, switching of capture source to TV
447 * switching to 32kHz without any frequency translation
450 static struct snd_pcm_hardware snd_card_saa7134_capture =
452 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
453 SNDRV_PCM_INFO_BLOCK_TRANSFER |
454 SNDRV_PCM_INFO_MMAP_VALID),
455 .formats = SNDRV_PCM_FMTBIT_S16_LE | \
456 SNDRV_PCM_FMTBIT_S16_BE | \
457 SNDRV_PCM_FMTBIT_S8 | \
458 SNDRV_PCM_FMTBIT_U8 | \
459 SNDRV_PCM_FMTBIT_U16_LE | \
460 SNDRV_PCM_FMTBIT_U16_BE,
461 .rates = SNDRV_PCM_RATE_32000,
466 .buffer_bytes_max = (256*1024),
467 .period_bytes_min = 64,
468 .period_bytes_max = (256*1024),
473 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
475 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
482 * ALSA hardware params
484 * - One of the ALSA capture callbacks.
486 * Called on initialization, right before the PCM preparation
490 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
491 struct snd_pcm_hw_params * hw_params)
493 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
494 struct saa7134_dev *dev;
495 unsigned int period_size, periods;
498 period_size = params_period_bytes(hw_params);
499 periods = params_periods(hw_params);
501 if (period_size < 0x100 || period_size > 0x10000)
505 if (period_size * periods > 1024 * 1024)
510 if (dev->dmasound.blocks == periods &&
511 dev->dmasound.blksize == period_size)
514 /* release the old buffer */
515 if (substream->runtime->dma_area) {
516 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
517 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
518 dsp_buffer_free(dev);
519 substream->runtime->dma_area = NULL;
521 dev->dmasound.blocks = periods;
522 dev->dmasound.blksize = period_size;
523 dev->dmasound.bufsize = period_size * periods;
525 err = dsp_buffer_init(dev);
527 dev->dmasound.blocks = 0;
528 dev->dmasound.blksize = 0;
529 dev->dmasound.bufsize = 0;
533 if (0 != (err = videobuf_sg_dma_map(&dev->pci->dev, &dev->dmasound.dma))) {
534 dsp_buffer_free(dev);
537 if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt))) {
538 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
539 dsp_buffer_free(dev);
542 if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
543 dev->dmasound.dma.sglist,
544 dev->dmasound.dma.sglen,
546 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
547 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
548 dsp_buffer_free(dev);
552 /* I should be able to use runtime->dma_addr in the control
553 byte, but it doesn't work. So I allocate the DMA using the
554 V4L functions, and force ALSA to use that as the DMA area */
556 substream->runtime->dma_area = dev->dmasound.dma.vmalloc;
557 substream->runtime->dma_bytes = dev->dmasound.bufsize;
558 substream->runtime->dma_addr = 0;
565 * ALSA hardware release
567 * - One of the ALSA capture callbacks.
569 * Called after closing the device, but before snd_card_saa7134_capture_close
570 * It stops the DMA audio and releases the buffers.
574 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
576 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
577 struct saa7134_dev *dev;
581 if (substream->runtime->dma_area) {
582 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
583 videobuf_sg_dma_unmap(&dev->pci->dev, &dev->dmasound.dma);
584 dsp_buffer_free(dev);
585 substream->runtime->dma_area = NULL;
592 * ALSA capture finish
594 * - One of the ALSA capture callbacks.
596 * Called after closing the device.
600 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
602 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
603 struct saa7134_dev *dev = saa7134->dev;
605 if (saa7134->mute_was_on) {
607 saa7134_tvaudio_setmute(dev);
615 * - One of the ALSA capture callbacks.
617 * Called when opening the device. It creates and populates the PCM
622 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
624 struct snd_pcm_runtime *runtime = substream->runtime;
625 snd_card_saa7134_pcm_t *pcm;
626 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
627 struct saa7134_dev *dev;
631 printk(KERN_ERR "BUG: saa7134 can't find device struct."
632 " Can't proceed with open\n");
636 mutex_lock(&dev->dmasound.lock);
638 dev->dmasound.read_count = 0;
639 dev->dmasound.read_offset = 0;
641 amux = dev->input->amux;
642 if ((amux < 1) || (amux > 3))
644 dev->dmasound.input = amux - 1;
646 mutex_unlock(&dev->dmasound.lock);
648 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
652 pcm->dev=saa7134->dev;
654 spin_lock_init(&pcm->lock);
656 pcm->substream = substream;
657 runtime->private_data = pcm;
658 runtime->private_free = snd_card_saa7134_runtime_free;
659 runtime->hw = snd_card_saa7134_capture;
661 if (dev->ctl_mute != 0) {
662 saa7134->mute_was_on = 1;
664 saa7134_tvaudio_setmute(dev);
667 err = snd_pcm_hw_constraint_integer(runtime,
668 SNDRV_PCM_HW_PARAM_PERIODS);
672 err = snd_pcm_hw_constraint_step(runtime, 0,
673 SNDRV_PCM_HW_PARAM_PERIODS, 2);
681 * page callback (needed for mmap)
684 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
685 unsigned long offset)
687 void *pageptr = substream->runtime->dma_area + offset;
688 return vmalloc_to_page(pageptr);
692 * ALSA capture callbacks definition
695 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
696 .open = snd_card_saa7134_capture_open,
697 .close = snd_card_saa7134_capture_close,
698 .ioctl = snd_pcm_lib_ioctl,
699 .hw_params = snd_card_saa7134_hw_params,
700 .hw_free = snd_card_saa7134_hw_free,
701 .prepare = snd_card_saa7134_capture_prepare,
702 .trigger = snd_card_saa7134_capture_trigger,
703 .pointer = snd_card_saa7134_capture_pointer,
704 .page = snd_card_saa7134_page,
710 * Called when initializing the board. Sets up the name and hooks up
715 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
720 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
722 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
723 pcm->private_data = saa7134;
725 strcpy(pcm->name, "SAA7134 PCM");
729 #define SAA713x_VOLUME(xname, xindex, addr) \
730 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
731 .info = snd_saa7134_volume_info, \
732 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
733 .private_value = addr }
735 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
736 struct snd_ctl_elem_info * uinfo)
738 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
740 uinfo->value.integer.min = 0;
741 uinfo->value.integer.max = 20;
745 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
746 struct snd_ctl_elem_value * ucontrol)
748 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
749 int addr = kcontrol->private_value;
751 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
752 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
756 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
757 struct snd_ctl_elem_value * ucontrol)
759 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
760 struct saa7134_dev *dev = chip->dev;
762 int change, addr = kcontrol->private_value;
765 left = ucontrol->value.integer.value[0];
770 right = ucontrol->value.integer.value[1];
775 spin_lock_irq(&chip->mixer_lock);
777 if (chip->mixer_volume[addr][0] != left) {
781 if (chip->mixer_volume[addr][1] != right) {
786 switch (dev->pci->device) {
787 case PCI_DEVICE_ID_PHILIPS_SAA7134:
789 case MIXER_ADDR_TVTUNER:
792 case MIXER_ADDR_LINE1:
793 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
794 (left > 10) ? 0x00 : 0x10);
796 case MIXER_ADDR_LINE2:
797 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
798 (left > 10) ? 0x00 : 0x20);
802 case PCI_DEVICE_ID_PHILIPS_SAA7133:
803 case PCI_DEVICE_ID_PHILIPS_SAA7135:
805 case MIXER_ADDR_TVTUNER:
808 case MIXER_ADDR_LINE1:
809 saa_andorb(0x0594, 0x10,
810 (left > 10) ? 0x00 : 0x10);
812 case MIXER_ADDR_LINE2:
813 saa_andorb(0x0594, 0x20,
814 (left > 10) ? 0x00 : 0x20);
819 chip->mixer_volume[addr][0] = left;
820 chip->mixer_volume[addr][1] = right;
822 spin_unlock_irq(&chip->mixer_lock);
826 #define SAA713x_CAPSRC(xname, xindex, addr) \
827 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
828 .info = snd_saa7134_capsrc_info, \
829 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
830 .private_value = addr }
832 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
833 struct snd_ctl_elem_info * uinfo)
835 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
837 uinfo->value.integer.min = 0;
838 uinfo->value.integer.max = 1;
842 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
843 struct snd_ctl_elem_value * ucontrol)
845 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
846 int addr = kcontrol->private_value;
848 spin_lock_irq(&chip->mixer_lock);
849 ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
850 ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
851 spin_unlock_irq(&chip->mixer_lock);
856 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
857 struct snd_ctl_elem_value * ucontrol)
859 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
860 int change, addr = kcontrol->private_value;
864 struct saa7134_dev *dev;
868 left = ucontrol->value.integer.value[0] & 1;
869 right = ucontrol->value.integer.value[1] & 1;
870 spin_lock_irq(&chip->mixer_lock);
872 change = chip->capture_source[addr][0] != left ||
873 chip->capture_source[addr][1] != right;
874 chip->capture_source[addr][0] = left;
875 chip->capture_source[addr][1] = right;
876 dev->dmasound.input=addr;
877 spin_unlock_irq(&chip->mixer_lock);
881 switch (dev->pci->device) {
883 case PCI_DEVICE_ID_PHILIPS_SAA7134:
885 case MIXER_ADDR_TVTUNER:
886 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
887 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
889 case MIXER_ADDR_LINE1:
890 case MIXER_ADDR_LINE2:
891 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
892 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
893 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, analog_io);
894 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
895 saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, rate);
900 case PCI_DEVICE_ID_PHILIPS_SAA7133:
901 case PCI_DEVICE_ID_PHILIPS_SAA7135:
902 xbarin = 0x03; // adc
905 case MIXER_ADDR_TVTUNER:
906 xbarin = 0; // Demodulator
909 case MIXER_ADDR_LINE1:
910 anabar = 0; // aux1, aux1
912 case MIXER_ADDR_LINE2:
913 anabar = 9; // aux2, aux2
917 /* output xbar always main channel */
918 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
920 if (left || right) { // We've got data, turn the input on
921 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
922 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
924 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
925 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
934 static struct snd_kcontrol_new snd_saa7134_controls[] = {
935 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
936 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
937 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
938 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
939 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
940 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
946 * Called when initializing the board. Sets up the name and hooks up
951 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
953 struct snd_card *card = chip->card;
957 if (snd_BUG_ON(!chip))
959 strcpy(card->mixername, "SAA7134 Mixer");
961 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
962 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
968 static void snd_saa7134_free(struct snd_card * card)
970 snd_card_saa7134_t *chip = card->private_data;
972 if (chip->dev->dmasound.priv_data == NULL)
976 free_irq(chip->irq, &chip->dev->dmasound);
978 chip->dev->dmasound.priv_data = NULL;
983 * ALSA initialization
985 * Called by the init routine, once for each saa7134 device present,
986 * it creates the basic structures and registers the ALSA devices
990 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
993 struct snd_card *card;
994 snd_card_saa7134_t *chip;
998 if (devnum >= SNDRV_CARDS)
1000 if (!enable[devnum])
1003 err = snd_card_create(index[devnum], id[devnum], THIS_MODULE,
1004 sizeof(snd_card_saa7134_t), &card);
1008 strcpy(card->driver, "SAA7134");
1010 /* Card "creation" */
1012 card->private_free = snd_saa7134_free;
1013 chip = (snd_card_saa7134_t *) card->private_data;
1015 spin_lock_init(&chip->lock);
1016 spin_lock_init(&chip->mixer_lock);
1022 chip->pci = dev->pci;
1023 chip->iobase = pci_resource_start(dev->pci, 0);
1026 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1027 IRQF_SHARED | IRQF_DISABLED, dev->name,
1028 (void*) &dev->dmasound);
1031 printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
1032 dev->name, dev->pci->irq);
1036 chip->irq = dev->pci->irq;
1038 mutex_init(&dev->dmasound.lock);
1040 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1043 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1046 snd_card_set_dev(card, &chip->pci->dev);
1048 /* End of "creation" */
1050 strcpy(card->shortname, "SAA7134");
1051 sprintf(card->longname, "%s at 0x%lx irq %d",
1052 chip->dev->name, chip->iobase, chip->irq);
1054 printk(KERN_INFO "%s/alsa: %s registered as card %d\n",dev->name,card->longname,index[devnum]);
1056 if ((err = snd_card_register(card)) == 0) {
1057 snd_saa7134_cards[devnum] = card;
1062 snd_card_free(card);
1067 static int alsa_device_init(struct saa7134_dev *dev)
1069 dev->dmasound.priv_data = dev;
1070 alsa_card_saa7134_create(dev,dev->nr);
1074 static int alsa_device_exit(struct saa7134_dev *dev)
1077 snd_card_free(snd_saa7134_cards[dev->nr]);
1078 snd_saa7134_cards[dev->nr] = NULL;
1083 * Module initializer
1085 * Loops through present saa7134 cards, and assigns an ALSA device
1090 static int saa7134_alsa_init(void)
1092 struct saa7134_dev *dev = NULL;
1093 struct list_head *list;
1095 saa7134_dmasound_init = alsa_device_init;
1096 saa7134_dmasound_exit = alsa_device_exit;
1098 printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
1100 list_for_each(list,&saa7134_devlist) {
1101 dev = list_entry(list, struct saa7134_dev, devlist);
1102 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
1103 printk(KERN_INFO "%s/alsa: %s doesn't support digital audio\n",
1104 dev->name, saa7134_boards[dev->board].name);
1106 alsa_device_init(dev);
1110 printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
1120 static void saa7134_alsa_exit(void)
1124 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1125 snd_card_free(snd_saa7134_cards[idx]);
1128 saa7134_dmasound_init = NULL;
1129 saa7134_dmasound_exit = NULL;
1130 printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
1135 /* We initialize this late, to make sure the sound system is up and running */
1136 late_initcall(saa7134_alsa_init);
1137 module_exit(saa7134_alsa_exit);
1138 MODULE_LICENSE("GPL");
1139 MODULE_AUTHOR("Ricardo Cerqueira");