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path: root/drivers/staging/media/tlg2300/pd-alsa.c
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Diffstat (limited to 'drivers/staging/media/tlg2300/pd-alsa.c')
-rw-r--r--drivers/staging/media/tlg2300/pd-alsa.c337
1 files changed, 0 insertions, 337 deletions
diff --git a/drivers/staging/media/tlg2300/pd-alsa.c b/drivers/staging/media/tlg2300/pd-alsa.c
deleted file mode 100644
index dd8fe10..0000000
--- a/drivers/staging/media/tlg2300/pd-alsa.c
+++ /dev/null
@@ -1,337 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/usb.h>
-#include <linux/init.h>
-#include <linux/sound.h>
-#include <linux/spinlock.h>
-#include <linux/soundcard.h>
-#include <linux/vmalloc.h>
-#include <linux/proc_fs.h>
-#include <linux/module.h>
-#include <linux/gfp.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/info.h>
-#include <sound/initval.h>
-#include <sound/control.h>
-#include <media/v4l2-common.h>
-#include "pd-common.h"
-#include "vendorcmds.h"
-
-static void complete_handler_audio(struct urb *urb);
-#define AUDIO_EP (0x83)
-#define AUDIO_BUF_SIZE (512)
-#define PERIOD_SIZE (1024 * 8)
-#define PERIOD_MIN (4)
-#define PERIOD_MAX PERIOD_MIN
-
-static struct snd_pcm_hardware snd_pd_hw_capture = {
- .info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_MMAP_VALID,
-
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- .rates = SNDRV_PCM_RATE_48000,
-
- .rate_min = 48000,
- .rate_max = 48000,
- .channels_min = 2,
- .channels_max = 2,
- .buffer_bytes_max = PERIOD_SIZE * PERIOD_MIN,
- .period_bytes_min = PERIOD_SIZE,
- .period_bytes_max = PERIOD_SIZE,
- .periods_min = PERIOD_MIN,
- .periods_max = PERIOD_MAX,
- /*
- .buffer_bytes_max = 62720 * 8,
- .period_bytes_min = 64,
- .period_bytes_max = 12544,
- .periods_min = 2,
- .periods_max = 98
- */
-};
-
-static int snd_pd_capture_open(struct snd_pcm_substream *substream)
-{
- struct poseidon *p = snd_pcm_substream_chip(substream);
- struct poseidon_audio *pa = &p->audio;
- struct snd_pcm_runtime *runtime = substream->runtime;
-
- if (!p)
- return -ENODEV;
- pa->users++;
- pa->card_close = 0;
- pa->capture_pcm_substream = substream;
- runtime->private_data = p;
-
- runtime->hw = snd_pd_hw_capture;
- snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
- usb_autopm_get_interface(p->interface);
- kref_get(&p->kref);
- return 0;
-}
-
-static int snd_pd_pcm_close(struct snd_pcm_substream *substream)
-{
- struct poseidon *p = snd_pcm_substream_chip(substream);
- struct poseidon_audio *pa = &p->audio;
-
- pa->users--;
- pa->card_close = 1;
- usb_autopm_put_interface(p->interface);
- kref_put(&p->kref, poseidon_delete);
- return 0;
-}
-
-static int snd_pd_hw_capture_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- unsigned int size;
-
- size = params_buffer_bytes(hw_params);
- if (runtime->dma_area) {
- if (runtime->dma_bytes > size)
- return 0;
- vfree(runtime->dma_area);
- }
- runtime->dma_area = vmalloc(size);
- if (!runtime->dma_area)
- return -ENOMEM;
- else
- runtime->dma_bytes = size;
- return 0;
-}
-
-static int audio_buf_free(struct poseidon *p)
-{
- struct poseidon_audio *pa = &p->audio;
- int i;
-
- for (i = 0; i < AUDIO_BUFS; i++)
- if (pa->urb_array[i])
- usb_kill_urb(pa->urb_array[i]);
- free_all_urb_generic(pa->urb_array, AUDIO_BUFS);
- logpm();
- return 0;
-}
-
-static int snd_pd_hw_capture_free(struct snd_pcm_substream *substream)
-{
- struct poseidon *p = snd_pcm_substream_chip(substream);
-
- logpm();
- audio_buf_free(p);
- return 0;
-}
-
-static int snd_pd_prepare(struct snd_pcm_substream *substream)
-{
- return 0;
-}
-
-#define AUDIO_TRAILER_SIZE (16)
-static inline void handle_audio_data(struct urb *urb, int *period_elapsed)
-{
- struct poseidon_audio *pa = urb->context;
- struct snd_pcm_runtime *runtime = pa->capture_pcm_substream->runtime;
-
- int stride = runtime->frame_bits >> 3;
- int len = urb->actual_length / stride;
- unsigned char *cp = urb->transfer_buffer;
- unsigned int oldptr = pa->rcv_position;
-
- if (urb->actual_length == AUDIO_BUF_SIZE - 4)
- len -= (AUDIO_TRAILER_SIZE / stride);
-
- /* do the copy */
- if (oldptr + len >= runtime->buffer_size) {
- unsigned int cnt = runtime->buffer_size - oldptr;
-
- memcpy(runtime->dma_area + oldptr * stride, cp, cnt * stride);
- memcpy(runtime->dma_area, (cp + cnt * stride),
- (len * stride - cnt * stride));
- } else
- memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
-
- /* update the statas */
- snd_pcm_stream_lock(pa->capture_pcm_substream);
- pa->rcv_position += len;
- if (pa->rcv_position >= runtime->buffer_size)
- pa->rcv_position -= runtime->buffer_size;
-
- pa->copied_position += (len);
- if (pa->copied_position >= runtime->period_size) {
- pa->copied_position -= runtime->period_size;
- *period_elapsed = 1;
- }
- snd_pcm_stream_unlock(pa->capture_pcm_substream);
-}
-
-static void complete_handler_audio(struct urb *urb)
-{
- struct poseidon_audio *pa = urb->context;
- struct snd_pcm_substream *substream = pa->capture_pcm_substream;
- int period_elapsed = 0;
- int ret;
-
- if (1 == pa->card_close || pa->capture_stream != STREAM_ON)
- return;
-
- if (urb->status != 0) {
- /*if (urb->status == -ESHUTDOWN)*/
- return;
- }
-
- if (substream) {
- if (urb->actual_length) {
- handle_audio_data(urb, &period_elapsed);
- if (period_elapsed)
- snd_pcm_period_elapsed(substream);
- }
- }
-
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret < 0)
- log("audio urb failed (errcod = %i)", ret);
- return;
-}
-
-static int fire_audio_urb(struct poseidon *p)
-{
- int i, ret = 0;
- struct poseidon_audio *pa = &p->audio;
-
- alloc_bulk_urbs_generic(pa->urb_array, AUDIO_BUFS,
- p->udev, AUDIO_EP,
- AUDIO_BUF_SIZE, GFP_ATOMIC,
- complete_handler_audio, pa);
-
- for (i = 0; i < AUDIO_BUFS; i++) {
- ret = usb_submit_urb(pa->urb_array[i], GFP_KERNEL);
- if (ret)
- log("urb err : %d", ret);
- }
- log();
- return ret;
-}
-
-static int snd_pd_capture_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- struct poseidon *p = snd_pcm_substream_chip(substream);
- struct poseidon_audio *pa = &p->audio;
-
- if (debug_mode)
- log("cmd %d, audio stat : %d\n", cmd, pa->capture_stream);
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_START:
- if (pa->capture_stream == STREAM_ON)
- return 0;
-
- pa->rcv_position = pa->copied_position = 0;
- pa->capture_stream = STREAM_ON;
-
- if (in_hibernation(p))
- return 0;
- fire_audio_urb(p);
- return 0;
-
- case SNDRV_PCM_TRIGGER_SUSPEND:
- pa->capture_stream = STREAM_SUSPEND;
- return 0;
- case SNDRV_PCM_TRIGGER_STOP:
- pa->capture_stream = STREAM_OFF;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static snd_pcm_uframes_t
-snd_pd_capture_pointer(struct snd_pcm_substream *substream)
-{
- struct poseidon *p = snd_pcm_substream_chip(substream);
- struct poseidon_audio *pa = &p->audio;
- return pa->rcv_position;
-}
-
-static struct page *snd_pcm_pd_get_page(struct snd_pcm_substream *subs,
- unsigned long offset)
-{
- void *pageptr = subs->runtime->dma_area + offset;
- return vmalloc_to_page(pageptr);
-}
-
-static struct snd_pcm_ops pcm_capture_ops = {
- .open = snd_pd_capture_open,
- .close = snd_pd_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_pd_hw_capture_params,
- .hw_free = snd_pd_hw_capture_free,
- .prepare = snd_pd_prepare,
- .trigger = snd_pd_capture_trigger,
- .pointer = snd_pd_capture_pointer,
- .page = snd_pcm_pd_get_page,
-};
-
-#ifdef CONFIG_PM
-int pm_alsa_suspend(struct poseidon *p)
-{
- logpm(p);
- audio_buf_free(p);
- return 0;
-}
-
-int pm_alsa_resume(struct poseidon *p)
-{
- logpm(p);
- fire_audio_urb(p);
- return 0;
-}
-#endif
-
-int poseidon_audio_init(struct poseidon *p)
-{
- struct poseidon_audio *pa = &p->audio;
- struct snd_card *card;
- struct snd_pcm *pcm;
- int ret;
-
- ret = snd_card_new(&p->interface->dev, -1, "Telegent",
- THIS_MODULE, 0, &card);
- if (ret != 0)
- return ret;
-
- ret = snd_pcm_new(card, "poseidon audio", 0, 0, 1, &pcm);
- if (ret < 0) {
- snd_card_free(card);
- return ret;
- }
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
- pcm->info_flags = 0;
- pcm->private_data = p;
- strcpy(pcm->name, "poseidon audio capture");
-
- strcpy(card->driver, "ALSA driver");
- strcpy(card->shortname, "poseidon Audio");
- strcpy(card->longname, "poseidon ALSA Audio");
-
- if (snd_card_register(card)) {
- snd_card_free(card);
- return -ENOMEM;
- }
- pa->card = card;
- return 0;
-}
-
-int poseidon_audio_free(struct poseidon *p)
-{
- struct poseidon_audio *pa = &p->audio;
-
- if (pa->card)
- snd_card_free(pa->card);
- return 0;
-}

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