diff options
Diffstat (limited to 'drivers/staging/go7007/snd-go7007.c')
| -rw-r--r-- | drivers/staging/go7007/snd-go7007.c | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/drivers/staging/go7007/snd-go7007.c b/drivers/staging/go7007/snd-go7007.c deleted file mode 100644 index deac938d850..00000000000 --- a/drivers/staging/go7007/snd-go7007.c +++ /dev/null @@ -1,306 +0,0 @@ -/* - * Copyright (C) 2005-2006 Micronas USA Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/vmalloc.h> -#include <linux/time.h> -#include <linux/mm.h> -#include <linux/i2c.h> -#include <linux/mutex.h> -#include <linux/uaccess.h> -#include <linux/slab.h> -#include <asm/system.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/initval.h> - -#include "go7007-priv.h" - -static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; -static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; -static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; - -module_param_array(index, int, NULL, 0444); -module_param_array(id, charp, NULL, 0444); -module_param_array(enable, bool, NULL, 0444); -MODULE_PARM_DESC(index, "Index value for the go7007 audio driver"); -MODULE_PARM_DESC(id, "ID string for the go7007 audio driver"); -MODULE_PARM_DESC(enable, "Enable for the go7007 audio driver"); - -struct go7007_snd { - struct snd_card *card; - struct snd_pcm *pcm; - struct snd_pcm_substream *substream; - spinlock_t lock; - int w_idx; - int hw_ptr; - int avail; - int capturing; -}; - -static struct snd_pcm_hardware go7007_snd_capture_hw = { - .info = (SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER | - 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 = (128*1024), - .period_bytes_min = 4096, - .period_bytes_max = (128*1024), - .periods_min = 1, - .periods_max = 32, -}; - -static void parse_audio_stream_data(struct go7007 *go, u8 *buf, int length) -{ - struct go7007_snd *gosnd = go->snd_context; - struct snd_pcm_runtime *runtime = gosnd->substream->runtime; - int frames = bytes_to_frames(runtime, length); - - spin_lock(&gosnd->lock); - gosnd->hw_ptr += frames; - if (gosnd->hw_ptr >= runtime->buffer_size) - gosnd->hw_ptr -= runtime->buffer_size; - gosnd->avail += frames; - spin_unlock(&gosnd->lock); - if (gosnd->w_idx + length > runtime->dma_bytes) { - int cpy = runtime->dma_bytes - gosnd->w_idx; - - memcpy(runtime->dma_area + gosnd->w_idx, buf, cpy); - length -= cpy; - buf += cpy; - gosnd->w_idx = 0; - } - memcpy(runtime->dma_area + gosnd->w_idx, buf, length); - gosnd->w_idx += length; - spin_lock(&gosnd->lock); - if (gosnd->avail < runtime->period_size) { - spin_unlock(&gosnd->lock); - return; - } - gosnd->avail -= runtime->period_size; - spin_unlock(&gosnd->lock); - if (gosnd->capturing) - snd_pcm_period_elapsed(gosnd->substream); -} - -static int go7007_snd_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - unsigned int bytes; - - bytes = params_buffer_bytes(hw_params); - if (substream->runtime->dma_bytes > 0) - vfree(substream->runtime->dma_area); - substream->runtime->dma_bytes = 0; - substream->runtime->dma_area = vmalloc(bytes); - if (substream->runtime->dma_area == NULL) - return -ENOMEM; - substream->runtime->dma_bytes = bytes; - go->audio_deliver = parse_audio_stream_data; - return 0; -} - -static int go7007_snd_hw_free(struct snd_pcm_substream *substream) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - - go->audio_deliver = NULL; - if (substream->runtime->dma_bytes > 0) - vfree(substream->runtime->dma_area); - substream->runtime->dma_bytes = 0; - return 0; -} - -static int go7007_snd_capture_open(struct snd_pcm_substream *substream) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - struct go7007_snd *gosnd = go->snd_context; - unsigned long flags; - int r; - - spin_lock_irqsave(&gosnd->lock, flags); - if (gosnd->substream == NULL) { - gosnd->substream = substream; - substream->runtime->hw = go7007_snd_capture_hw; - r = 0; - } else - r = -EBUSY; - spin_unlock_irqrestore(&gosnd->lock, flags); - return r; -} - -static int go7007_snd_capture_close(struct snd_pcm_substream *substream) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - struct go7007_snd *gosnd = go->snd_context; - - gosnd->substream = NULL; - return 0; -} - -static int go7007_snd_pcm_prepare(struct snd_pcm_substream *substream) -{ - return 0; -} - -static int go7007_snd_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - struct go7007_snd *gosnd = go->snd_context; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - /* Just set a flag to indicate we should signal ALSA when - * sound comes in */ - gosnd->capturing = 1; - return 0; - case SNDRV_PCM_TRIGGER_STOP: - gosnd->hw_ptr = gosnd->w_idx = gosnd->avail = 0; - gosnd->capturing = 0; - return 0; - default: - return -EINVAL; - } -} - -static snd_pcm_uframes_t go7007_snd_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct go7007 *go = snd_pcm_substream_chip(substream); - struct go7007_snd *gosnd = go->snd_context; - - return gosnd->hw_ptr; -} - -static struct page *go7007_snd_pcm_page(struct snd_pcm_substream *substream, - unsigned long offset) -{ - return vmalloc_to_page(substream->runtime->dma_area + offset); -} - -static struct snd_pcm_ops go7007_snd_capture_ops = { - .open = go7007_snd_capture_open, - .close = go7007_snd_capture_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = go7007_snd_hw_params, - .hw_free = go7007_snd_hw_free, - .prepare = go7007_snd_pcm_prepare, - .trigger = go7007_snd_pcm_trigger, - .pointer = go7007_snd_pcm_pointer, - .page = go7007_snd_pcm_page, -}; - -static int go7007_snd_free(struct snd_device *device) -{ - struct go7007 *go = device->device_data; - - kfree(go->snd_context); - go->snd_context = NULL; - if (--go->ref_count == 0) - kfree(go); - return 0; -} - -static struct snd_device_ops go7007_snd_device_ops = { - .dev_free = go7007_snd_free, -}; - -int go7007_snd_init(struct go7007 *go) -{ - static int dev; - struct go7007_snd *gosnd; - int ret = 0; - - if (dev >= SNDRV_CARDS) - return -ENODEV; - if (!enable[dev]) { - dev++; - return -ENOENT; - } - gosnd = kmalloc(sizeof(struct go7007_snd), GFP_KERNEL); - if (gosnd == NULL) - return -ENOMEM; - spin_lock_init(&gosnd->lock); - gosnd->hw_ptr = gosnd->w_idx = gosnd->avail = 0; - gosnd->capturing = 0; - ret = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, - &gosnd->card); - if (ret < 0) { - kfree(gosnd); - return ret; - } - ret = snd_device_new(gosnd->card, SNDRV_DEV_LOWLEVEL, go, - &go7007_snd_device_ops); - if (ret < 0) { - kfree(gosnd); - return ret; - } - snd_card_set_dev(gosnd->card, go->dev); - ret = snd_pcm_new(gosnd->card, "go7007", 0, 0, 1, &gosnd->pcm); - if (ret < 0) { - snd_card_free(gosnd->card); - kfree(gosnd); - return ret; - } - strncpy(gosnd->card->driver, "go7007", sizeof(gosnd->card->driver)); - strncpy(gosnd->card->shortname, go->name, sizeof(gosnd->card->driver)); - strncpy(gosnd->card->longname, gosnd->card->shortname, - sizeof(gosnd->card->longname)); - - gosnd->pcm->private_data = go; - snd_pcm_set_ops(gosnd->pcm, SNDRV_PCM_STREAM_CAPTURE, - &go7007_snd_capture_ops); - - ret = snd_card_register(gosnd->card); - if (ret < 0) { - snd_card_free(gosnd->card); - kfree(gosnd); - return ret; - } - - gosnd->substream = NULL; - go->snd_context = gosnd; - ++dev; - ++go->ref_count; - - return 0; -} -EXPORT_SYMBOL(go7007_snd_init); - -int go7007_snd_remove(struct go7007 *go) -{ - struct go7007_snd *gosnd = go->snd_context; - - snd_card_disconnect(gosnd->card); - snd_card_free_when_closed(gosnd->card); - return 0; -} -EXPORT_SYMBOL(go7007_snd_remove); - -MODULE_LICENSE("GPL v2"); |
