diff options
Diffstat (limited to 'drivers/media/video/cx231xx/cx231xx-audio.c')
| -rw-r--r-- | drivers/media/video/cx231xx/cx231xx-audio.c | 780 |
1 files changed, 0 insertions, 780 deletions
diff --git a/drivers/media/video/cx231xx/cx231xx-audio.c b/drivers/media/video/cx231xx/cx231xx-audio.c deleted file mode 100644 index b4c99c7270c..00000000000 --- a/drivers/media/video/cx231xx/cx231xx-audio.c +++ /dev/null @@ -1,780 +0,0 @@ -/* - * Conexant Cx231xx audio extension - * - * Copyright (C) 2008 <srinivasa.deevi at conexant dot com> - * Based on em28xx driver - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#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/slab.h> -#include <linux/vmalloc.h> -#include <linux/proc_fs.h> -#include <linux/module.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 "cx231xx.h" - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "activates debug info"); - -#define dprintk(fmt, arg...) do { \ - if (debug) \ - printk(KERN_INFO "cx231xx-audio %s: " fmt, \ - __func__, ##arg); \ - } while (0) - -static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; - -static int cx231xx_isoc_audio_deinit(struct cx231xx *dev) -{ - int i; - - dprintk("Stopping isoc\n"); - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - if (dev->adev.urb[i]) { - if (!irqs_disabled()) - usb_kill_urb(dev->adev.urb[i]); - else - usb_unlink_urb(dev->adev.urb[i]); - - usb_free_urb(dev->adev.urb[i]); - dev->adev.urb[i] = NULL; - - kfree(dev->adev.transfer_buffer[i]); - dev->adev.transfer_buffer[i] = NULL; - } - } - - return 0; -} - -static int cx231xx_bulk_audio_deinit(struct cx231xx *dev) -{ - int i; - - dprintk("Stopping bulk\n"); - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - if (dev->adev.urb[i]) { - if (!irqs_disabled()) - usb_kill_urb(dev->adev.urb[i]); - else - usb_unlink_urb(dev->adev.urb[i]); - - usb_free_urb(dev->adev.urb[i]); - dev->adev.urb[i] = NULL; - - kfree(dev->adev.transfer_buffer[i]); - dev->adev.transfer_buffer[i] = NULL; - } - } - - return 0; -} - -static void cx231xx_audio_isocirq(struct urb *urb) -{ - struct cx231xx *dev = urb->context; - int i; - unsigned int oldptr; - int period_elapsed = 0; - int status; - unsigned char *cp; - unsigned int stride; - struct snd_pcm_substream *substream; - struct snd_pcm_runtime *runtime; - - if (dev->state & DEV_DISCONNECTED) - return; - - switch (urb->status) { - case 0: /* success */ - case -ETIMEDOUT: /* NAK */ - break; - case -ECONNRESET: /* kill */ - case -ENOENT: - case -ESHUTDOWN: - return; - default: /* error */ - dprintk("urb completition error %d.\n", urb->status); - break; - } - - if (atomic_read(&dev->stream_started) == 0) - return; - - if (dev->adev.capture_pcm_substream) { - substream = dev->adev.capture_pcm_substream; - runtime = substream->runtime; - stride = runtime->frame_bits >> 3; - - for (i = 0; i < urb->number_of_packets; i++) { - int length = urb->iso_frame_desc[i].actual_length / - stride; - cp = (unsigned char *)urb->transfer_buffer + - urb->iso_frame_desc[i].offset; - - if (!length) - continue; - - oldptr = dev->adev.hwptr_done_capture; - if (oldptr + length >= runtime->buffer_size) { - unsigned int cnt; - - cnt = runtime->buffer_size - oldptr; - memcpy(runtime->dma_area + oldptr * stride, cp, - cnt * stride); - memcpy(runtime->dma_area, cp + cnt * stride, - length * stride - cnt * stride); - } else { - memcpy(runtime->dma_area + oldptr * stride, cp, - length * stride); - } - - snd_pcm_stream_lock(substream); - - dev->adev.hwptr_done_capture += length; - if (dev->adev.hwptr_done_capture >= - runtime->buffer_size) - dev->adev.hwptr_done_capture -= - runtime->buffer_size; - - dev->adev.capture_transfer_done += length; - if (dev->adev.capture_transfer_done >= - runtime->period_size) { - dev->adev.capture_transfer_done -= - runtime->period_size; - period_elapsed = 1; - } - snd_pcm_stream_unlock(substream); - } - if (period_elapsed) - snd_pcm_period_elapsed(substream); - } - urb->status = 0; - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status < 0) { - cx231xx_errdev("resubmit of audio urb failed (error=%i)\n", - status); - } - return; -} - -static void cx231xx_audio_bulkirq(struct urb *urb) -{ - struct cx231xx *dev = urb->context; - unsigned int oldptr; - int period_elapsed = 0; - int status; - unsigned char *cp; - unsigned int stride; - struct snd_pcm_substream *substream; - struct snd_pcm_runtime *runtime; - - if (dev->state & DEV_DISCONNECTED) - return; - - switch (urb->status) { - case 0: /* success */ - case -ETIMEDOUT: /* NAK */ - break; - case -ECONNRESET: /* kill */ - case -ENOENT: - case -ESHUTDOWN: - return; - default: /* error */ - dprintk("urb completition error %d.\n", urb->status); - break; - } - - if (atomic_read(&dev->stream_started) == 0) - return; - - if (dev->adev.capture_pcm_substream) { - substream = dev->adev.capture_pcm_substream; - runtime = substream->runtime; - stride = runtime->frame_bits >> 3; - - if (1) { - int length = urb->actual_length / - stride; - cp = (unsigned char *)urb->transfer_buffer; - - oldptr = dev->adev.hwptr_done_capture; - if (oldptr + length >= runtime->buffer_size) { - unsigned int cnt; - - cnt = runtime->buffer_size - oldptr; - memcpy(runtime->dma_area + oldptr * stride, cp, - cnt * stride); - memcpy(runtime->dma_area, cp + cnt * stride, - length * stride - cnt * stride); - } else { - memcpy(runtime->dma_area + oldptr * stride, cp, - length * stride); - } - - snd_pcm_stream_lock(substream); - - dev->adev.hwptr_done_capture += length; - if (dev->adev.hwptr_done_capture >= - runtime->buffer_size) - dev->adev.hwptr_done_capture -= - runtime->buffer_size; - - dev->adev.capture_transfer_done += length; - if (dev->adev.capture_transfer_done >= - runtime->period_size) { - dev->adev.capture_transfer_done -= - runtime->period_size; - period_elapsed = 1; - } - snd_pcm_stream_unlock(substream); - } - if (period_elapsed) - snd_pcm_period_elapsed(substream); - } - urb->status = 0; - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status < 0) { - cx231xx_errdev("resubmit of audio urb failed (error=%i)\n", - status); - } - return; -} - -static int cx231xx_init_audio_isoc(struct cx231xx *dev) -{ - int i, errCode; - int sb_size; - - cx231xx_info("%s: Starting ISO AUDIO transfers\n", __func__); - - if (dev->state & DEV_DISCONNECTED) - return -ENODEV; - - sb_size = CX231XX_ISO_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size; - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - struct urb *urb; - int j, k; - - dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC); - if (!dev->adev.transfer_buffer[i]) - return -ENOMEM; - - memset(dev->adev.transfer_buffer[i], 0x80, sb_size); - urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC); - if (!urb) { - cx231xx_errdev("usb_alloc_urb failed!\n"); - for (j = 0; j < i; j++) { - usb_free_urb(dev->adev.urb[j]); - kfree(dev->adev.transfer_buffer[j]); - } - return -ENOMEM; - } - - urb->dev = dev->udev; - urb->context = dev; - urb->pipe = usb_rcvisocpipe(dev->udev, - dev->adev.end_point_addr); - urb->transfer_flags = URB_ISO_ASAP; - urb->transfer_buffer = dev->adev.transfer_buffer[i]; - urb->interval = 1; - urb->complete = cx231xx_audio_isocirq; - urb->number_of_packets = CX231XX_ISO_NUM_AUDIO_PACKETS; - urb->transfer_buffer_length = sb_size; - - for (j = k = 0; j < CX231XX_ISO_NUM_AUDIO_PACKETS; - j++, k += dev->adev.max_pkt_size) { - urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length = dev->adev.max_pkt_size; - } - dev->adev.urb[i] = urb; - } - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC); - if (errCode < 0) { - cx231xx_isoc_audio_deinit(dev); - return errCode; - } - } - - return errCode; -} - -static int cx231xx_init_audio_bulk(struct cx231xx *dev) -{ - int i, errCode; - int sb_size; - - cx231xx_info("%s: Starting BULK AUDIO transfers\n", __func__); - - if (dev->state & DEV_DISCONNECTED) - return -ENODEV; - - sb_size = CX231XX_NUM_AUDIO_PACKETS * dev->adev.max_pkt_size; - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - struct urb *urb; - int j; - - dev->adev.transfer_buffer[i] = kmalloc(sb_size, GFP_ATOMIC); - if (!dev->adev.transfer_buffer[i]) - return -ENOMEM; - - memset(dev->adev.transfer_buffer[i], 0x80, sb_size); - urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC); - if (!urb) { - cx231xx_errdev("usb_alloc_urb failed!\n"); - for (j = 0; j < i; j++) { - usb_free_urb(dev->adev.urb[j]); - kfree(dev->adev.transfer_buffer[j]); - } - return -ENOMEM; - } - - urb->dev = dev->udev; - urb->context = dev; - urb->pipe = usb_rcvbulkpipe(dev->udev, - dev->adev.end_point_addr); - urb->transfer_flags = 0; - urb->transfer_buffer = dev->adev.transfer_buffer[i]; - urb->complete = cx231xx_audio_bulkirq; - urb->transfer_buffer_length = sb_size; - - dev->adev.urb[i] = urb; - - } - - for (i = 0; i < CX231XX_AUDIO_BUFS; i++) { - errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC); - if (errCode < 0) { - cx231xx_bulk_audio_deinit(dev); - return errCode; - } - } - - return errCode; -} - -static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, - size_t size) -{ - struct snd_pcm_runtime *runtime = subs->runtime; - - dprintk("Allocating vbuffer\n"); - 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; - - runtime->dma_bytes = size; - - return 0; -} - -static struct snd_pcm_hardware snd_cx231xx_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_CONTINUOUS | SNDRV_PCM_RATE_KNOT, - - .rate_min = 48000, - .rate_max = 48000, - .channels_min = 2, - .channels_max = 2, - .buffer_bytes_max = 62720 * 8, /* just about the value in usbaudio.c */ - .period_bytes_min = 64, /* 12544/2, */ - .period_bytes_max = 12544, - .periods_min = 2, - .periods_max = 98, /* 12544, */ -}; - -static int snd_cx231xx_capture_open(struct snd_pcm_substream *substream) -{ - struct cx231xx *dev = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - int ret = 0; - - dprintk("opening device and trying to acquire exclusive lock\n"); - - if (!dev) { - cx231xx_errdev("BUG: cx231xx can't find device struct." - " Can't proceed with open\n"); - return -ENODEV; - } - - if (dev->state & DEV_DISCONNECTED) { - cx231xx_errdev("Can't open. the device was removed.\n"); - return -ENODEV; - } - - /* Sets volume, mute, etc */ - dev->mute = 0; - - /* set alternate setting for audio interface */ - /* 1 - 48000 samples per sec */ - mutex_lock(&dev->lock); - if (dev->USE_ISO) - ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 1); - else - ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0); - mutex_unlock(&dev->lock); - if (ret < 0) { - cx231xx_errdev("failed to set alternate setting !\n"); - - return ret; - } - - runtime->hw = snd_cx231xx_hw_capture; - - mutex_lock(&dev->lock); - /* inform hardware to start streaming */ - ret = cx231xx_capture_start(dev, 1, Audio); - - dev->adev.users++; - mutex_unlock(&dev->lock); - - snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); - dev->adev.capture_pcm_substream = substream; - runtime->private_data = dev; - - return 0; -} - -static int snd_cx231xx_pcm_close(struct snd_pcm_substream *substream) -{ - int ret; - struct cx231xx *dev = snd_pcm_substream_chip(substream); - - dprintk("closing device\n"); - - /* inform hardware to stop streaming */ - mutex_lock(&dev->lock); - ret = cx231xx_capture_start(dev, 0, Audio); - - /* set alternate setting for audio interface */ - /* 1 - 48000 samples per sec */ - ret = cx231xx_set_alt_setting(dev, INDEX_AUDIO, 0); - if (ret < 0) { - cx231xx_errdev("failed to set alternate setting !\n"); - - mutex_unlock(&dev->lock); - return ret; - } - - dev->mute = 1; - dev->adev.users--; - mutex_unlock(&dev->lock); - - if (dev->adev.users == 0 && dev->adev.shutdown == 1) { - dprintk("audio users: %d\n", dev->adev.users); - dprintk("disabling audio stream!\n"); - dev->adev.shutdown = 0; - dprintk("released lock\n"); - if (atomic_read(&dev->stream_started) > 0) { - atomic_set(&dev->stream_started, 0); - schedule_work(&dev->wq_trigger); - } - } - return 0; -} - -static int snd_cx231xx_hw_capture_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - int ret; - - dprintk("Setting capture parameters\n"); - - ret = snd_pcm_alloc_vmalloc_buffer(substream, - params_buffer_bytes(hw_params)); -#if 0 - /* TODO: set up cx231xx audio chip to deliver the correct audio format, - current default is 48000hz multiplexed => 96000hz mono - which shouldn't matter since analogue TV only supports mono */ - unsigned int channels, rate, format; - - format = params_format(hw_params); - rate = params_rate(hw_params); - channels = params_channels(hw_params); -#endif - - return ret; -} - -static int snd_cx231xx_hw_capture_free(struct snd_pcm_substream *substream) -{ - struct cx231xx *dev = snd_pcm_substream_chip(substream); - - dprintk("Stop capture, if needed\n"); - - if (atomic_read(&dev->stream_started) > 0) { - atomic_set(&dev->stream_started, 0); - schedule_work(&dev->wq_trigger); - } - - return 0; -} - -static int snd_cx231xx_prepare(struct snd_pcm_substream *substream) -{ - struct cx231xx *dev = snd_pcm_substream_chip(substream); - - dev->adev.hwptr_done_capture = 0; - dev->adev.capture_transfer_done = 0; - - return 0; -} - -static void audio_trigger(struct work_struct *work) -{ - struct cx231xx *dev = container_of(work, struct cx231xx, wq_trigger); - - if (atomic_read(&dev->stream_started)) { - dprintk("starting capture"); - if (is_fw_load(dev) == 0) - cx25840_call(dev, core, load_fw); - if (dev->USE_ISO) - cx231xx_init_audio_isoc(dev); - else - cx231xx_init_audio_bulk(dev); - } else { - dprintk("stopping capture"); - cx231xx_isoc_audio_deinit(dev); - } -} - -static int snd_cx231xx_capture_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - struct cx231xx *dev = snd_pcm_substream_chip(substream); - int retval = 0; - - if (dev->state & DEV_DISCONNECTED) - return -ENODEV; - - spin_lock(&dev->adev.slock); - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - atomic_set(&dev->stream_started, 1); - break; - case SNDRV_PCM_TRIGGER_STOP: - atomic_set(&dev->stream_started, 0); - break; - default: - retval = -EINVAL; - break; - } - spin_unlock(&dev->adev.slock); - - schedule_work(&dev->wq_trigger); - - return retval; -} - -static snd_pcm_uframes_t snd_cx231xx_capture_pointer(struct snd_pcm_substream - *substream) -{ - struct cx231xx *dev; - unsigned long flags; - snd_pcm_uframes_t hwptr_done; - - dev = snd_pcm_substream_chip(substream); - - spin_lock_irqsave(&dev->adev.slock, flags); - hwptr_done = dev->adev.hwptr_done_capture; - spin_unlock_irqrestore(&dev->adev.slock, flags); - - return hwptr_done; -} - -static struct page *snd_pcm_get_vmalloc_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 snd_cx231xx_pcm_capture = { - .open = snd_cx231xx_capture_open, - .close = snd_cx231xx_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_cx231xx_hw_capture_params, - .hw_free = snd_cx231xx_hw_capture_free, - .prepare = snd_cx231xx_prepare, - .trigger = snd_cx231xx_capture_trigger, - .pointer = snd_cx231xx_capture_pointer, - .page = snd_pcm_get_vmalloc_page, -}; - -static int cx231xx_audio_init(struct cx231xx *dev) -{ - struct cx231xx_audio *adev = &dev->adev; - struct snd_pcm *pcm; - struct snd_card *card; - static int devnr; - int err; - struct usb_interface *uif; - int i, isoc_pipe = 0; - - if (dev->has_alsa_audio != 1) { - /* This device does not support the extension (in this case - the device is expecting the snd-usb-audio module or - doesn't have analog audio support at all) */ - return 0; - } - - cx231xx_info("cx231xx-audio.c: probing for cx231xx " - "non standard usbaudio\n"); - - err = snd_card_create(index[devnr], "Cx231xx Audio", THIS_MODULE, - 0, &card); - if (err < 0) - return err; - - spin_lock_init(&adev->slock); - err = snd_pcm_new(card, "Cx231xx Audio", 0, 0, 1, &pcm); - if (err < 0) { - snd_card_free(card); - return err; - } - - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, - &snd_cx231xx_pcm_capture); - pcm->info_flags = 0; - pcm->private_data = dev; - strcpy(pcm->name, "Conexant cx231xx Capture"); - snd_card_set_dev(card, &dev->udev->dev); - strcpy(card->driver, "Cx231xx-Audio"); - strcpy(card->shortname, "Cx231xx Audio"); - strcpy(card->longname, "Conexant cx231xx Audio"); - - INIT_WORK(&dev->wq_trigger, audio_trigger); - - err = snd_card_register(card); - if (err < 0) { - snd_card_free(card); - return err; - } - adev->sndcard = card; - adev->udev = dev->udev; - - /* compute alternate max packet sizes for Audio */ - uif = - dev->udev->actconfig->interface[dev->current_pcb_config. - hs_config_info[0].interface_info. - audio_index + 1]; - - adev->end_point_addr = - le16_to_cpu(uif->altsetting[0].endpoint[isoc_pipe].desc. - bEndpointAddress); - - adev->num_alt = uif->num_altsetting; - cx231xx_info("EndPoint Addr 0x%x, Alternate settings: %i\n", - adev->end_point_addr, adev->num_alt); - adev->alt_max_pkt_size = kmalloc(32 * adev->num_alt, GFP_KERNEL); - - if (adev->alt_max_pkt_size == NULL) { - cx231xx_errdev("out of memory!\n"); - return -ENOMEM; - } - - for (i = 0; i < adev->num_alt; i++) { - u16 tmp = - le16_to_cpu(uif->altsetting[i].endpoint[isoc_pipe].desc. - wMaxPacketSize); - adev->alt_max_pkt_size[i] = - (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); - cx231xx_info("Alternate setting %i, max size= %i\n", i, - adev->alt_max_pkt_size[i]); - } - - return 0; -} - -static int cx231xx_audio_fini(struct cx231xx *dev) -{ - if (dev == NULL) - return 0; - - if (dev->has_alsa_audio != 1) { - /* This device does not support the extension (in this case - the device is expecting the snd-usb-audio module or - doesn't have analog audio support at all) */ - return 0; - } - - if (dev->adev.sndcard) { - snd_card_free(dev->adev.sndcard); - kfree(dev->adev.alt_max_pkt_size); - dev->adev.sndcard = NULL; - } - - return 0; -} - -static struct cx231xx_ops audio_ops = { - .id = CX231XX_AUDIO, - .name = "Cx231xx Audio Extension", - .init = cx231xx_audio_init, - .fini = cx231xx_audio_fini, -}; - -static int __init cx231xx_alsa_register(void) -{ - return cx231xx_register_extension(&audio_ops); -} - -static void __exit cx231xx_alsa_unregister(void) -{ - cx231xx_unregister_extension(&audio_ops); -} - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>"); -MODULE_DESCRIPTION("Cx231xx Audio driver"); - -module_init(cx231xx_alsa_register); -module_exit(cx231xx_alsa_unregister); |