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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 15:13:30 (GMT)
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 19:36:22 (GMT)
commitb285192a43f0432d82c2c10974204e78af0da596 (patch)
tree618aa87e760c9c949eca9e4df6ae0eeffa11dcfc /drivers/media/video/cx18/cx18-alsa-pcm.c
parent68de959f773a1d49096835c411390bceff5d1549 (diff)
downloadlinux-fsl-qoriq-b285192a43f0432d82c2c10974204e78af0da596.tar.xz
[media] rename most media/video pci drivers to media/pci
Rename all PCI drivers with their own directory under drivers/media/video into drivers/media/pci and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-alsa-pcm.c')
-rw-r--r--drivers/media/video/cx18/cx18-alsa-pcm.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/drivers/media/video/cx18/cx18-alsa-pcm.c b/drivers/media/video/cx18/cx18-alsa-pcm.c
deleted file mode 100644
index 7a5b84a..0000000
--- a/drivers/media/video/cx18/cx18-alsa-pcm.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * ALSA PCM device for the
- * ALSA interface to cx18 PCM capture streams
- *
- * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>
- * Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
- *
- * Portions of this work were sponsored by ONELAN Limited.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/vmalloc.h>
-
-#include <media/v4l2-device.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-
-#include "cx18-driver.h"
-#include "cx18-queue.h"
-#include "cx18-streams.h"
-#include "cx18-fileops.h"
-#include "cx18-alsa.h"
-
-static unsigned int pcm_debug;
-module_param(pcm_debug, int, 0644);
-MODULE_PARM_DESC(pcm_debug, "enable debug messages for pcm");
-
-#define dprintk(fmt, arg...) do { \
- if (pcm_debug) \
- printk(KERN_INFO "cx18-alsa-pcm %s: " fmt, \
- __func__, ##arg); \
- } while (0)
-
-static struct snd_pcm_hardware snd_cx18_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 = 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, */
-};
-
-void cx18_alsa_announce_pcm_data(struct snd_cx18_card *cxsc, u8 *pcm_data,
- size_t num_bytes)
-{
- struct snd_pcm_substream *substream;
- struct snd_pcm_runtime *runtime;
- unsigned int oldptr;
- unsigned int stride;
- int period_elapsed = 0;
- int length;
-
- dprintk("cx18 alsa announce ptr=%p data=%p num_bytes=%zd\n", cxsc,
- pcm_data, num_bytes);
-
- substream = cxsc->capture_pcm_substream;
- if (substream == NULL) {
- dprintk("substream was NULL\n");
- return;
- }
-
- runtime = substream->runtime;
- if (runtime == NULL) {
- dprintk("runtime was NULL\n");
- return;
- }
-
- stride = runtime->frame_bits >> 3;
- if (stride == 0) {
- dprintk("stride is zero\n");
- return;
- }
-
- length = num_bytes / stride;
- if (length == 0) {
- dprintk("%s: length was zero\n", __func__);
- return;
- }
-
- if (runtime->dma_area == NULL) {
- dprintk("dma area was NULL - ignoring\n");
- return;
- }
-
- oldptr = cxsc->hwptr_done_capture;
- if (oldptr + length >= runtime->buffer_size) {
- unsigned int cnt =
- runtime->buffer_size - oldptr;
- memcpy(runtime->dma_area + oldptr * stride, pcm_data,
- cnt * stride);
- memcpy(runtime->dma_area, pcm_data + cnt * stride,
- length * stride - cnt * stride);
- } else {
- memcpy(runtime->dma_area + oldptr * stride, pcm_data,
- length * stride);
- }
- snd_pcm_stream_lock(substream);
-
- cxsc->hwptr_done_capture += length;
- if (cxsc->hwptr_done_capture >=
- runtime->buffer_size)
- cxsc->hwptr_done_capture -=
- runtime->buffer_size;
-
- cxsc->capture_transfer_done += length;
- if (cxsc->capture_transfer_done >=
- runtime->period_size) {
- cxsc->capture_transfer_done -=
- runtime->period_size;
- period_elapsed = 1;
- }
-
- snd_pcm_stream_unlock(substream);
-
- if (period_elapsed)
- snd_pcm_period_elapsed(substream);
-}
-
-static int snd_cx18_pcm_capture_open(struct snd_pcm_substream *substream)
-{
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
- struct cx18 *cx = to_cx18(v4l2_dev);
- struct cx18_stream *s;
- struct cx18_open_id item;
- int ret;
-
- /* Instruct the cx18 to start sending packets */
- snd_cx18_lock(cxsc);
- s = &cx->streams[CX18_ENC_STREAM_TYPE_PCM];
-
- item.cx = cx;
- item.type = s->type;
- item.open_id = cx->open_id++;
-
- /* See if the stream is available */
- if (cx18_claim_stream(&item, item.type)) {
- /* No, it's already in use */
- snd_cx18_unlock(cxsc);
- return -EBUSY;
- }
-
- if (test_bit(CX18_F_S_STREAMOFF, &s->s_flags) ||
- test_and_set_bit(CX18_F_S_STREAMING, &s->s_flags)) {
- /* We're already streaming. No additional action required */
- snd_cx18_unlock(cxsc);
- return 0;
- }
-
-
- runtime->hw = snd_cx18_hw_capture;
- snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
- cxsc->capture_pcm_substream = substream;
- runtime->private_data = cx;
-
- cx->pcm_announce_callback = cx18_alsa_announce_pcm_data;
-
- /* Not currently streaming, so start it up */
- set_bit(CX18_F_S_STREAMING, &s->s_flags);
- ret = cx18_start_v4l2_encode_stream(s);
- snd_cx18_unlock(cxsc);
-
- return ret;
-}
-
-static int snd_cx18_pcm_capture_close(struct snd_pcm_substream *substream)
-{
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
- struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
- struct cx18 *cx = to_cx18(v4l2_dev);
- struct cx18_stream *s;
-
- /* Instruct the cx18 to stop sending packets */
- snd_cx18_lock(cxsc);
- s = &cx->streams[CX18_ENC_STREAM_TYPE_PCM];
- cx18_stop_v4l2_encode_stream(s, 0);
- clear_bit(CX18_F_S_STREAMING, &s->s_flags);
-
- cx18_release_stream(s);
-
- cx->pcm_announce_callback = NULL;
- snd_cx18_unlock(cxsc);
-
- return 0;
-}
-
-static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream,
- unsigned int cmd, void *arg)
-{
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
- int ret;
-
- snd_cx18_lock(cxsc);
- ret = snd_pcm_lib_ioctl(substream, cmd, arg);
- snd_cx18_unlock(cxsc);
- return ret;
-}
-
-
-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 int snd_cx18_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- dprintk("%s called\n", __func__);
-
- return snd_pcm_alloc_vmalloc_buffer(substream,
- params_buffer_bytes(params));
-}
-
-static int snd_cx18_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
- unsigned long flags;
-
- spin_lock_irqsave(&cxsc->slock, flags);
- if (substream->runtime->dma_area) {
- dprintk("freeing pcm capture region\n");
- vfree(substream->runtime->dma_area);
- substream->runtime->dma_area = NULL;
- }
- spin_unlock_irqrestore(&cxsc->slock, flags);
-
- return 0;
-}
-
-static int snd_cx18_pcm_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
-
- cxsc->hwptr_done_capture = 0;
- cxsc->capture_transfer_done = 0;
-
- return 0;
-}
-
-static int snd_cx18_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- return 0;
-}
-
-static
-snd_pcm_uframes_t snd_cx18_pcm_pointer(struct snd_pcm_substream *substream)
-{
- unsigned long flags;
- snd_pcm_uframes_t hwptr_done;
- struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
-
- spin_lock_irqsave(&cxsc->slock, flags);
- hwptr_done = cxsc->hwptr_done_capture;
- spin_unlock_irqrestore(&cxsc->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_cx18_pcm_capture_ops = {
- .open = snd_cx18_pcm_capture_open,
- .close = snd_cx18_pcm_capture_close,
- .ioctl = snd_cx18_pcm_ioctl,
- .hw_params = snd_cx18_pcm_hw_params,
- .hw_free = snd_cx18_pcm_hw_free,
- .prepare = snd_cx18_pcm_prepare,
- .trigger = snd_cx18_pcm_trigger,
- .pointer = snd_cx18_pcm_pointer,
- .page = snd_pcm_get_vmalloc_page,
-};
-
-int snd_cx18_pcm_create(struct snd_cx18_card *cxsc)
-{
- struct snd_pcm *sp;
- struct snd_card *sc = cxsc->sc;
- struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
- struct cx18 *cx = to_cx18(v4l2_dev);
- int ret;
-
- ret = snd_pcm_new(sc, "CX23418 PCM",
- 0, /* PCM device 0, the only one for this card */
- 0, /* 0 playback substreams */
- 1, /* 1 capture substream */
- &sp);
- if (ret) {
- CX18_ALSA_ERR("%s: snd_cx18_pcm_create() failed with err %d\n",
- __func__, ret);
- goto err_exit;
- }
-
- spin_lock_init(&cxsc->slock);
-
- snd_pcm_set_ops(sp, SNDRV_PCM_STREAM_CAPTURE,
- &snd_cx18_pcm_capture_ops);
- sp->info_flags = 0;
- sp->private_data = cxsc;
- strlcpy(sp->name, cx->card_name, sizeof(sp->name));
-
- return 0;
-
-err_exit:
- return ret;
-}