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
20 #include "saa7134-reg.h"
22 #include <linux/init.h>
23 #include <linux/slab.h>
24 #include <linux/time.h>
25 #include <linux/wait.h>
26 #include <linux/module.h>
27 #include <sound/core.h>
28 #include <sound/control.h>
29 #include <sound/pcm.h>
30 #include <sound/pcm_params.h>
31 #include <sound/initval.h>
32 #include <linux/interrupt.h>
33 #include <linux/vmalloc.h>
36 * Configuration macros
40 #define MIXER_ADDR_UNSELECTED -1
41 #define MIXER_ADDR_TVTUNER 0
42 #define MIXER_ADDR_LINE1 1
43 #define MIXER_ADDR_LINE2 2
44 #define MIXER_ADDR_LAST 2
47 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
48 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
49 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
51 module_param_array(index, int, NULL, 0444);
52 module_param_array(enable, int, NULL, 0444);
53 MODULE_PARM_DESC(index, "Index value for SAA7134 capture interface(s).");
54 MODULE_PARM_DESC(enable, "Enable (or not) the SAA7134 capture interface(s).");
60 typedef struct snd_card_saa7134 {
61 struct snd_card *card;
62 spinlock_t mixer_lock;
63 int mixer_volume[MIXER_ADDR_LAST+1][2];
64 int capture_source_addr;
65 int capture_source[2];
66 struct snd_kcontrol *capture_ctl[MIXER_ADDR_LAST+1];
68 struct saa7134_dev *dev;
82 typedef struct snd_card_saa7134_pcm {
83 struct saa7134_dev *dev;
87 struct snd_pcm_substream *substream;
88 } snd_card_saa7134_pcm_t;
90 static struct snd_card *snd_saa7134_cards[SNDRV_CARDS];
94 * saa7134 DMA audio stop
96 * Called when the capture device is released or the buffer overflows
98 * - Copied verbatim from saa7134-oss's dsp_dma_stop.
102 static void saa7134_dma_stop(struct saa7134_dev *dev)
104 dev->dmasound.dma_blk = -1;
105 dev->dmasound.dma_running = 0;
106 saa7134_set_dmabits(dev);
110 * saa7134 DMA audio start
112 * Called when preparing the capture device for use
114 * - Copied verbatim from saa7134-oss's dsp_dma_start.
118 static void saa7134_dma_start(struct saa7134_dev *dev)
120 dev->dmasound.dma_blk = 0;
121 dev->dmasound.dma_running = 1;
122 saa7134_set_dmabits(dev);
126 * saa7134 audio DMA IRQ handler
128 * Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
129 * Handles shifting between the 2 buffers, manages the read counters,
130 * and notifies ALSA when periods elapse
132 * - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
136 static void saa7134_irq_alsa_done(struct saa7134_dev *dev,
137 unsigned long status)
139 int next_blk, reg = 0;
141 spin_lock(&dev->slock);
142 if (UNSET == dev->dmasound.dma_blk) {
143 pr_debug("irq: recording stopped\n");
146 if (0 != (status & 0x0f000000))
147 pr_debug("irq: lost %ld\n", (status >> 24) & 0x0f);
148 if (0 == (status & 0x10000000)) {
150 if (0 == (dev->dmasound.dma_blk & 0x01))
151 reg = SAA7134_RS_BA1(6);
154 if (1 == (dev->dmasound.dma_blk & 0x01))
155 reg = SAA7134_RS_BA2(6);
158 pr_debug("irq: field oops [%s]\n",
159 (status & 0x10000000) ? "even" : "odd");
163 if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
164 pr_debug("irq: overrun [full=%d/%d] - Blocks in %d\n",
165 dev->dmasound.read_count,
166 dev->dmasound.bufsize, dev->dmasound.blocks);
167 spin_unlock(&dev->slock);
168 snd_pcm_stop_xrun(dev->dmasound.substream);
172 /* next block addr */
173 next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
174 saa_writel(reg,next_blk * dev->dmasound.blksize);
175 pr_debug("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
176 (status & 0x10000000) ? "even" : "odd ", next_blk,
177 next_blk * dev->dmasound.blksize, dev->dmasound.blocks,
178 dev->dmasound.blksize, dev->dmasound.read_count);
180 /* update status & wake waiting readers */
181 dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
182 dev->dmasound.read_count += dev->dmasound.blksize;
184 dev->dmasound.recording_on = reg;
186 if (dev->dmasound.read_count >= snd_pcm_lib_period_bytes(dev->dmasound.substream)) {
187 spin_unlock(&dev->slock);
188 snd_pcm_period_elapsed(dev->dmasound.substream);
189 spin_lock(&dev->slock);
193 spin_unlock(&dev->slock);
198 * IRQ request handler
200 * Runs along with saa7134's IRQ handler, discards anything that isn't
205 static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id)
207 struct saa7134_dmasound *dmasound = dev_id;
208 struct saa7134_dev *dev = dmasound->priv_data;
210 unsigned long report, status;
211 int loop, handled = 0;
213 for (loop = 0; loop < 10; loop++) {
214 report = saa_readl(SAA7134_IRQ_REPORT);
215 status = saa_readl(SAA7134_IRQ_STATUS);
217 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
219 saa_writel(SAA7134_IRQ_REPORT,
220 SAA7134_IRQ_REPORT_DONE_RA3);
221 saa7134_irq_alsa_done(dev, status);
228 pr_debug("error! looping IRQ!");
232 return IRQ_RETVAL(handled);
236 * ALSA capture trigger
238 * - One of the ALSA capture callbacks.
240 * Called whenever a capture is started or stopped. Must be defined,
241 * but there's nothing we want to do here
245 static int snd_card_saa7134_capture_trigger(struct snd_pcm_substream * substream,
248 struct snd_pcm_runtime *runtime = substream->runtime;
249 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
250 struct saa7134_dev *dev=pcm->dev;
253 spin_lock(&dev->slock);
254 if (cmd == SNDRV_PCM_TRIGGER_START) {
256 saa7134_dma_start(dev);
257 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
259 saa7134_dma_stop(dev);
263 spin_unlock(&dev->slock);
268 static int saa7134_alsa_dma_init(struct saa7134_dev *dev, int nr_pages)
270 struct saa7134_dmasound *dma = &dev->dmasound;
274 dma->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
275 if (NULL == dma->vaddr) {
276 pr_debug("vmalloc_32(%d pages) failed\n", nr_pages);
280 pr_debug("vmalloc is at addr 0x%08lx, size=%d\n",
281 (unsigned long)dma->vaddr,
282 nr_pages << PAGE_SHIFT);
284 memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT);
285 dma->nr_pages = nr_pages;
287 dma->sglist = vzalloc(dma->nr_pages * sizeof(*dma->sglist));
288 if (NULL == dma->sglist)
291 sg_init_table(dma->sglist, dma->nr_pages);
292 for (i = 0; i < dma->nr_pages; i++) {
293 pg = vmalloc_to_page(dma->vaddr + i * PAGE_SIZE);
295 goto vmalloc_to_page_err;
296 sg_set_page(&dma->sglist[i], pg, PAGE_SIZE, 0);
309 static int saa7134_alsa_dma_map(struct saa7134_dev *dev)
311 struct saa7134_dmasound *dma = &dev->dmasound;
313 dma->sglen = dma_map_sg(&dev->pci->dev, dma->sglist,
314 dma->nr_pages, PCI_DMA_FROMDEVICE);
316 if (0 == dma->sglen) {
317 pr_warn("%s: saa7134_alsa_map_sg failed\n", __func__);
323 static int saa7134_alsa_dma_unmap(struct saa7134_dev *dev)
325 struct saa7134_dmasound *dma = &dev->dmasound;
330 dma_unmap_sg(&dev->pci->dev, dma->sglist, dma->sglen, PCI_DMA_FROMDEVICE);
335 static int saa7134_alsa_dma_free(struct saa7134_dmasound *dma)
345 * DMA buffer initialization
347 * Uses V4L functions to initialize the DMA. Shouldn't be necessary in
348 * ALSA, but I was unable to use ALSA's own DMA, and had to force the
351 * - Copied verbatim from saa7134-oss.
355 static int dsp_buffer_init(struct saa7134_dev *dev)
359 BUG_ON(!dev->dmasound.bufsize);
361 err = saa7134_alsa_dma_init(dev,
362 (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
371 * Called after closing the device, during snd_card_saa7134_capture_close
375 static int dsp_buffer_free(struct saa7134_dev *dev)
377 BUG_ON(!dev->dmasound.blksize);
379 saa7134_alsa_dma_free(&dev->dmasound);
381 dev->dmasound.blocks = 0;
382 dev->dmasound.blksize = 0;
383 dev->dmasound.bufsize = 0;
389 * Setting the capture source and updating the ALSA controls
391 static int snd_saa7134_capsrc_set(struct snd_kcontrol *kcontrol,
392 int left, int right, bool force_notify)
394 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
395 int change = 0, addr = kcontrol->private_value;
396 int active, old_addr;
399 struct saa7134_dev *dev;
403 spin_lock_irq(&chip->mixer_lock);
405 active = left != 0 || right != 0;
406 old_addr = chip->capture_source_addr;
408 /* The active capture source cannot be deactivated */
410 change = old_addr != addr ||
411 chip->capture_source[0] != left ||
412 chip->capture_source[1] != right;
414 chip->capture_source[0] = left;
415 chip->capture_source[1] = right;
416 chip->capture_source_addr = addr;
417 dev->dmasound.input = addr;
419 spin_unlock_irq(&chip->mixer_lock);
422 switch (dev->pci->device) {
424 case PCI_DEVICE_ID_PHILIPS_SAA7134:
426 case MIXER_ADDR_TVTUNER:
427 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL,
429 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,
432 case MIXER_ADDR_LINE1:
433 case MIXER_ADDR_LINE2:
434 analog_io = (MIXER_ADDR_LINE1 == addr) ?
436 rate = (32000 == dev->dmasound.rate) ?
438 saa_andorb(SAA7134_ANALOG_IO_SELECT,
440 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL,
442 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,
448 case PCI_DEVICE_ID_PHILIPS_SAA7133:
449 case PCI_DEVICE_ID_PHILIPS_SAA7135:
450 xbarin = 0x03; /* adc */
453 case MIXER_ADDR_TVTUNER:
454 xbarin = 0; /* Demodulator */
455 anabar = 2; /* DACs */
457 case MIXER_ADDR_LINE1:
458 anabar = 0; /* aux1, aux1 */
460 case MIXER_ADDR_LINE2:
461 anabar = 9; /* aux2, aux2 */
465 /* output xbar always main channel */
466 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1,
470 /* We've got data, turn the input on */
471 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1,
473 saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
475 saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1,
477 saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
485 snd_ctl_notify(chip->card,
486 SNDRV_CTL_EVENT_MASK_VALUE,
487 &chip->capture_ctl[addr]->id);
489 if (old_addr != MIXER_ADDR_UNSELECTED && old_addr != addr)
490 snd_ctl_notify(chip->card,
491 SNDRV_CTL_EVENT_MASK_VALUE,
492 &chip->capture_ctl[old_addr]->id);
499 * ALSA PCM preparation
501 * - One of the ALSA capture callbacks.
503 * Called right after the capture device is opened, this function configures
504 * the buffer using the previously defined functions, allocates the memory,
505 * sets up the hardware registers, and then starts the DMA. When this function
506 * returns, the audio should be flowing.
510 static int snd_card_saa7134_capture_prepare(struct snd_pcm_substream * substream)
512 struct snd_pcm_runtime *runtime = substream->runtime;
515 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
516 struct saa7134_dev *dev;
517 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
519 pcm->dev->dmasound.substream = substream;
523 if (snd_pcm_format_width(runtime->format) == 8)
528 if (snd_pcm_format_signed(runtime->format))
533 if (snd_pcm_format_big_endian(runtime->format))
538 switch (dev->pci->device) {
539 case PCI_DEVICE_ID_PHILIPS_SAA7134:
540 if (1 == runtime->channels)
542 if (2 == runtime->channels)
547 fmt |= (MIXER_ADDR_TVTUNER == dev->dmasound.input) ? 0xc0 : 0x80;
548 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
549 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >> 8);
550 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
551 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
554 case PCI_DEVICE_ID_PHILIPS_SAA7133:
555 case PCI_DEVICE_ID_PHILIPS_SAA7135:
556 if (1 == runtime->channels)
558 if (2 == runtime->channels)
562 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -1);
563 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
567 pr_debug("rec_start: afmt=%d ch=%d => fmt=0x%x swap=%c\n",
568 runtime->format, runtime->channels, fmt,
570 /* dma: setup channel 6 (= AUDIO) */
571 control = SAA7134_RS_CONTROL_BURST_16 |
572 SAA7134_RS_CONTROL_ME |
573 (dev->dmasound.pt.dma >> 12);
575 control |= SAA7134_RS_CONTROL_BSWAP;
577 saa_writel(SAA7134_RS_BA1(6),0);
578 saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
579 saa_writel(SAA7134_RS_PITCH(6),0);
580 saa_writel(SAA7134_RS_CONTROL(6),control);
582 dev->dmasound.rate = runtime->rate;
584 /* Setup and update the card/ALSA controls */
585 snd_saa7134_capsrc_set(saa7134->capture_ctl[dev->dmasound.input], 1, 1,
593 * ALSA pointer fetching
595 * - One of the ALSA capture callbacks.
597 * Called whenever a period elapses, it must return the current hardware
598 * position of the buffer.
599 * Also resets the read counter used to prevent overruns
603 static snd_pcm_uframes_t
604 snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream)
606 struct snd_pcm_runtime *runtime = substream->runtime;
607 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
608 struct saa7134_dev *dev=pcm->dev;
610 if (dev->dmasound.read_count) {
611 dev->dmasound.read_count -= snd_pcm_lib_period_bytes(substream);
612 dev->dmasound.read_offset += snd_pcm_lib_period_bytes(substream);
613 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
614 dev->dmasound.read_offset = 0;
617 return bytes_to_frames(runtime, dev->dmasound.read_offset);
621 * ALSA hardware capabilities definition
623 * Report only 32kHz for ALSA:
625 * - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz
627 * - SAA7134 for TV mode uses DemDec mode (32kHz)
628 * - Radio works in 32kHz only
629 * - When recording 48kHz from Line1/Line2, switching of capture source to TV
631 * switching to 32kHz without any frequency translation
634 static struct snd_pcm_hardware snd_card_saa7134_capture =
636 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
637 SNDRV_PCM_INFO_BLOCK_TRANSFER |
638 SNDRV_PCM_INFO_MMAP_VALID),
639 .formats = SNDRV_PCM_FMTBIT_S16_LE | \
640 SNDRV_PCM_FMTBIT_S16_BE | \
641 SNDRV_PCM_FMTBIT_S8 | \
642 SNDRV_PCM_FMTBIT_U8 | \
643 SNDRV_PCM_FMTBIT_U16_LE | \
644 SNDRV_PCM_FMTBIT_U16_BE,
645 .rates = SNDRV_PCM_RATE_32000,
650 .buffer_bytes_max = (256*1024),
651 .period_bytes_min = 64,
652 .period_bytes_max = (256*1024),
657 static void snd_card_saa7134_runtime_free(struct snd_pcm_runtime *runtime)
659 snd_card_saa7134_pcm_t *pcm = runtime->private_data;
666 * ALSA hardware params
668 * - One of the ALSA capture callbacks.
670 * Called on initialization, right before the PCM preparation
674 static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream,
675 struct snd_pcm_hw_params * hw_params)
677 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
678 struct saa7134_dev *dev;
679 unsigned int period_size, periods;
682 period_size = params_period_bytes(hw_params);
683 periods = params_periods(hw_params);
685 if (period_size < 0x100 || period_size > 0x10000)
689 if (period_size * periods > 1024 * 1024)
694 if (dev->dmasound.blocks == periods &&
695 dev->dmasound.blksize == period_size)
698 /* release the old buffer */
699 if (substream->runtime->dma_area) {
700 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
701 saa7134_alsa_dma_unmap(dev);
702 dsp_buffer_free(dev);
703 substream->runtime->dma_area = NULL;
705 dev->dmasound.blocks = periods;
706 dev->dmasound.blksize = period_size;
707 dev->dmasound.bufsize = period_size * periods;
709 err = dsp_buffer_init(dev);
711 dev->dmasound.blocks = 0;
712 dev->dmasound.blksize = 0;
713 dev->dmasound.bufsize = 0;
717 err = saa7134_alsa_dma_map(dev);
719 dsp_buffer_free(dev);
722 err = saa7134_pgtable_alloc(dev->pci, &dev->dmasound.pt);
724 saa7134_alsa_dma_unmap(dev);
725 dsp_buffer_free(dev);
728 err = saa7134_pgtable_build(dev->pci, &dev->dmasound.pt,
729 dev->dmasound.sglist, dev->dmasound.sglen, 0);
731 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
732 saa7134_alsa_dma_unmap(dev);
733 dsp_buffer_free(dev);
737 /* I should be able to use runtime->dma_addr in the control
738 byte, but it doesn't work. So I allocate the DMA using the
739 V4L functions, and force ALSA to use that as the DMA area */
741 substream->runtime->dma_area = dev->dmasound.vaddr;
742 substream->runtime->dma_bytes = dev->dmasound.bufsize;
743 substream->runtime->dma_addr = 0;
750 * ALSA hardware release
752 * - One of the ALSA capture callbacks.
754 * Called after closing the device, but before snd_card_saa7134_capture_close
755 * It stops the DMA audio and releases the buffers.
759 static int snd_card_saa7134_hw_free(struct snd_pcm_substream * substream)
761 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
762 struct saa7134_dev *dev;
766 if (substream->runtime->dma_area) {
767 saa7134_pgtable_free(dev->pci, &dev->dmasound.pt);
768 saa7134_alsa_dma_unmap(dev);
769 dsp_buffer_free(dev);
770 substream->runtime->dma_area = NULL;
777 * ALSA capture finish
779 * - One of the ALSA capture callbacks.
781 * Called after closing the device.
785 static int snd_card_saa7134_capture_close(struct snd_pcm_substream * substream)
787 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
788 struct saa7134_dev *dev = saa7134->dev;
790 if (saa7134->mute_was_on) {
792 saa7134_tvaudio_setmute(dev);
800 * - One of the ALSA capture callbacks.
802 * Called when opening the device. It creates and populates the PCM
807 static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream)
809 struct snd_pcm_runtime *runtime = substream->runtime;
810 snd_card_saa7134_pcm_t *pcm;
811 snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
812 struct saa7134_dev *dev;
816 pr_err("BUG: saa7134 can't find device struct."
817 " Can't proceed with open\n");
821 mutex_lock(&dev->dmasound.lock);
823 dev->dmasound.read_count = 0;
824 dev->dmasound.read_offset = 0;
826 amux = dev->input->amux;
827 if ((amux < 1) || (amux > 3))
829 dev->dmasound.input = amux - 1;
831 mutex_unlock(&dev->dmasound.lock);
833 pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
837 pcm->dev=saa7134->dev;
839 spin_lock_init(&pcm->lock);
841 pcm->substream = substream;
842 runtime->private_data = pcm;
843 runtime->private_free = snd_card_saa7134_runtime_free;
844 runtime->hw = snd_card_saa7134_capture;
846 if (dev->ctl_mute != 0) {
847 saa7134->mute_was_on = 1;
849 saa7134_tvaudio_setmute(dev);
852 err = snd_pcm_hw_constraint_integer(runtime,
853 SNDRV_PCM_HW_PARAM_PERIODS);
857 err = snd_pcm_hw_constraint_step(runtime, 0,
858 SNDRV_PCM_HW_PARAM_PERIODS, 2);
866 * page callback (needed for mmap)
869 static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
870 unsigned long offset)
872 void *pageptr = substream->runtime->dma_area + offset;
873 return vmalloc_to_page(pageptr);
877 * ALSA capture callbacks definition
880 static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
881 .open = snd_card_saa7134_capture_open,
882 .close = snd_card_saa7134_capture_close,
883 .ioctl = snd_pcm_lib_ioctl,
884 .hw_params = snd_card_saa7134_hw_params,
885 .hw_free = snd_card_saa7134_hw_free,
886 .prepare = snd_card_saa7134_capture_prepare,
887 .trigger = snd_card_saa7134_capture_trigger,
888 .pointer = snd_card_saa7134_capture_pointer,
889 .page = snd_card_saa7134_page,
895 * Called when initializing the board. Sets up the name and hooks up
900 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
905 if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
907 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
908 pcm->private_data = saa7134;
910 strcpy(pcm->name, "SAA7134 PCM");
914 #define SAA713x_VOLUME(xname, xindex, addr) \
915 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
916 .info = snd_saa7134_volume_info, \
917 .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
918 .private_value = addr }
920 static int snd_saa7134_volume_info(struct snd_kcontrol * kcontrol,
921 struct snd_ctl_elem_info * uinfo)
923 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
925 uinfo->value.integer.min = 0;
926 uinfo->value.integer.max = 20;
930 static int snd_saa7134_volume_get(struct snd_kcontrol * kcontrol,
931 struct snd_ctl_elem_value * ucontrol)
933 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
934 int addr = kcontrol->private_value;
936 ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
937 ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
941 static int snd_saa7134_volume_put(struct snd_kcontrol * kcontrol,
942 struct snd_ctl_elem_value * ucontrol)
944 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
945 struct saa7134_dev *dev = chip->dev;
947 int change, addr = kcontrol->private_value;
950 left = ucontrol->value.integer.value[0];
955 right = ucontrol->value.integer.value[1];
960 spin_lock_irq(&chip->mixer_lock);
962 if (chip->mixer_volume[addr][0] != left) {
966 if (chip->mixer_volume[addr][1] != right) {
971 switch (dev->pci->device) {
972 case PCI_DEVICE_ID_PHILIPS_SAA7134:
974 case MIXER_ADDR_TVTUNER:
977 case MIXER_ADDR_LINE1:
978 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x10,
979 (left > 10) ? 0x00 : 0x10);
981 case MIXER_ADDR_LINE2:
982 saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x20,
983 (left > 10) ? 0x00 : 0x20);
987 case PCI_DEVICE_ID_PHILIPS_SAA7133:
988 case PCI_DEVICE_ID_PHILIPS_SAA7135:
990 case MIXER_ADDR_TVTUNER:
993 case MIXER_ADDR_LINE1:
994 saa_andorb(0x0594, 0x10,
995 (left > 10) ? 0x00 : 0x10);
997 case MIXER_ADDR_LINE2:
998 saa_andorb(0x0594, 0x20,
999 (left > 10) ? 0x00 : 0x20);
1004 chip->mixer_volume[addr][0] = left;
1005 chip->mixer_volume[addr][1] = right;
1007 spin_unlock_irq(&chip->mixer_lock);
1011 #define SAA713x_CAPSRC(xname, xindex, addr) \
1012 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1013 .info = snd_saa7134_capsrc_info, \
1014 .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
1015 .private_value = addr }
1017 static int snd_saa7134_capsrc_info(struct snd_kcontrol * kcontrol,
1018 struct snd_ctl_elem_info * uinfo)
1020 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1022 uinfo->value.integer.min = 0;
1023 uinfo->value.integer.max = 1;
1027 static int snd_saa7134_capsrc_get(struct snd_kcontrol * kcontrol,
1028 struct snd_ctl_elem_value * ucontrol)
1030 snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
1031 int addr = kcontrol->private_value;
1033 spin_lock_irq(&chip->mixer_lock);
1034 if (chip->capture_source_addr == addr) {
1035 ucontrol->value.integer.value[0] = chip->capture_source[0];
1036 ucontrol->value.integer.value[1] = chip->capture_source[1];
1038 ucontrol->value.integer.value[0] = 0;
1039 ucontrol->value.integer.value[1] = 0;
1041 spin_unlock_irq(&chip->mixer_lock);
1046 static int snd_saa7134_capsrc_put(struct snd_kcontrol * kcontrol,
1047 struct snd_ctl_elem_value * ucontrol)
1050 left = ucontrol->value.integer.value[0] & 1;
1051 right = ucontrol->value.integer.value[1] & 1;
1053 return snd_saa7134_capsrc_set(kcontrol, left, right, false);
1056 static struct snd_kcontrol_new snd_saa7134_volume_controls[] = {
1057 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
1058 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
1059 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
1062 static struct snd_kcontrol_new snd_saa7134_capture_controls[] = {
1063 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
1064 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
1065 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
1071 * Called when initializing the board. Sets up the name and hooks up
1076 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
1078 struct snd_card *card = chip->card;
1079 struct snd_kcontrol *kcontrol;
1083 strcpy(card->mixername, "SAA7134 Mixer");
1085 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_volume_controls); idx++) {
1086 kcontrol = snd_ctl_new1(&snd_saa7134_volume_controls[idx],
1088 err = snd_ctl_add(card, kcontrol);
1093 for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_capture_controls); idx++) {
1094 kcontrol = snd_ctl_new1(&snd_saa7134_capture_controls[idx],
1096 addr = snd_saa7134_capture_controls[idx].private_value;
1097 chip->capture_ctl[addr] = kcontrol;
1098 err = snd_ctl_add(card, kcontrol);
1103 chip->capture_source_addr = MIXER_ADDR_UNSELECTED;
1107 static void snd_saa7134_free(struct snd_card * card)
1109 snd_card_saa7134_t *chip = card->private_data;
1111 if (chip->dev->dmasound.priv_data == NULL)
1115 free_irq(chip->irq, &chip->dev->dmasound);
1117 chip->dev->dmasound.priv_data = NULL;
1122 * ALSA initialization
1124 * Called by the init routine, once for each saa7134 device present,
1125 * it creates the basic structures and registers the ALSA devices
1129 static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
1132 struct snd_card *card;
1133 snd_card_saa7134_t *chip;
1137 if (devnum >= SNDRV_CARDS)
1139 if (!enable[devnum])
1142 err = snd_card_new(&dev->pci->dev, index[devnum], id[devnum],
1143 THIS_MODULE, sizeof(snd_card_saa7134_t), &card);
1147 strcpy(card->driver, "SAA7134");
1149 /* Card "creation" */
1151 card->private_free = snd_saa7134_free;
1152 chip = card->private_data;
1154 spin_lock_init(&chip->lock);
1155 spin_lock_init(&chip->mixer_lock);
1161 chip->pci = dev->pci;
1162 chip->iobase = pci_resource_start(dev->pci, 0);
1165 err = request_irq(dev->pci->irq, saa7134_alsa_irq,
1166 IRQF_SHARED, dev->name,
1167 (void*) &dev->dmasound);
1170 pr_err("%s: can't get IRQ %d for ALSA\n",
1171 dev->name, dev->pci->irq);
1175 chip->irq = dev->pci->irq;
1177 mutex_init(&dev->dmasound.lock);
1179 if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
1182 if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
1185 /* End of "creation" */
1187 strcpy(card->shortname, "SAA7134");
1188 sprintf(card->longname, "%s at 0x%lx irq %d",
1189 chip->dev->name, chip->iobase, chip->irq);
1191 pr_info("%s/alsa: %s registered as card %d\n",
1192 dev->name, card->longname, index[devnum]);
1194 if ((err = snd_card_register(card)) == 0) {
1195 snd_saa7134_cards[devnum] = card;
1200 snd_card_free(card);
1205 static int alsa_device_init(struct saa7134_dev *dev)
1207 dev->dmasound.priv_data = dev;
1208 alsa_card_saa7134_create(dev,dev->nr);
1212 static int alsa_device_exit(struct saa7134_dev *dev)
1215 snd_card_free(snd_saa7134_cards[dev->nr]);
1216 snd_saa7134_cards[dev->nr] = NULL;
1221 * Module initializer
1223 * Loops through present saa7134 cards, and assigns an ALSA device
1228 static int saa7134_alsa_init(void)
1230 struct saa7134_dev *dev = NULL;
1231 struct list_head *list;
1233 saa7134_dmasound_init = alsa_device_init;
1234 saa7134_dmasound_exit = alsa_device_exit;
1236 pr_info("saa7134 ALSA driver for DMA sound loaded\n");
1238 list_for_each(list,&saa7134_devlist) {
1239 dev = list_entry(list, struct saa7134_dev, devlist);
1240 if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
1241 pr_info("%s/alsa: %s doesn't support digital audio\n",
1242 dev->name, saa7134_boards[dev->board].name);
1244 alsa_device_init(dev);
1248 pr_info("saa7134 ALSA: no saa7134 cards found\n");
1258 static void saa7134_alsa_exit(void)
1262 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1263 snd_card_free(snd_saa7134_cards[idx]);
1266 saa7134_dmasound_init = NULL;
1267 saa7134_dmasound_exit = NULL;
1268 pr_info("saa7134 ALSA driver for DMA sound unloaded\n");
1273 /* We initialize this late, to make sure the sound system is up and running */
1274 late_initcall(saa7134_alsa_init);
1275 module_exit(saa7134_alsa_exit);
1276 MODULE_LICENSE("GPL");
1277 MODULE_AUTHOR("Ricardo Cerqueira");