mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-10 01:12:45 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
11
drivers/media/usb/usbtv/Kconfig
Normal file
11
drivers/media/usb/usbtv/Kconfig
Normal file
|
|
@ -0,0 +1,11 @@
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config VIDEO_USBTV
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tristate "USBTV007 video capture support"
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depends on VIDEO_V4L2 && SND
|
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select SND_PCM
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select VIDEOBUF2_VMALLOC
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|
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---help---
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This is a video4linux2 driver for USBTV007 based video capture devices.
|
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|
||||
To compile this driver as a module, choose M here: the
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module will be called usbtv
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5
drivers/media/usb/usbtv/Makefile
Normal file
5
drivers/media/usb/usbtv/Makefile
Normal file
|
|
@ -0,0 +1,5 @@
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usbtv-y := usbtv-core.o \
|
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usbtv-video.o \
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usbtv-audio.o
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|
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obj-$(CONFIG_VIDEO_USBTV) += usbtv.o
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||||
385
drivers/media/usb/usbtv/usbtv-audio.c
Normal file
385
drivers/media/usb/usbtv/usbtv-audio.c
Normal file
|
|
@ -0,0 +1,385 @@
|
|||
/*
|
||||
* Fushicai USBTV007 Audio-Video Grabber Driver
|
||||
*
|
||||
* Product web site:
|
||||
* http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html
|
||||
*
|
||||
* Copyright (c) 2013 Federico Simoncelli
|
||||
* All rights reserved.
|
||||
* No physical hardware was harmed running Windows during the
|
||||
* reverse-engineering activity
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL").
|
||||
*/
|
||||
|
||||
#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/ac97_codec.h>
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#include <sound/pcm_params.h>
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|
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#include "usbtv.h"
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static struct snd_pcm_hardware snd_usbtv_digital_hw = {
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.info = SNDRV_PCM_INFO_BATCH |
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SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_MMAP_VALID,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
|
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.rate_max = 48000,
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
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.period_bytes_min = 11059,
|
||||
.period_bytes_max = 13516,
|
||||
.periods_min = 2,
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||||
.periods_max = 98,
|
||||
.buffer_bytes_max = 62720 * 8, /* value in usbaudio.c */
|
||||
};
|
||||
|
||||
static int snd_usbtv_pcm_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
chip->snd_substream = substream;
|
||||
runtime->hw = snd_usbtv_digital_hw;
|
||||
|
||||
return 0;
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}
|
||||
|
||||
static int snd_usbtv_pcm_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
if (atomic_read(&chip->snd_stream)) {
|
||||
atomic_set(&chip->snd_stream, 0);
|
||||
schedule_work(&chip->snd_trigger);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_usbtv_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *hw_params)
|
||||
{
|
||||
int rv;
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
rv = snd_pcm_lib_malloc_pages(substream,
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||||
params_buffer_bytes(hw_params));
|
||||
|
||||
if (rv < 0) {
|
||||
dev_warn(chip->dev, "pcm audio buffer allocation failure %i\n",
|
||||
rv);
|
||||
return rv;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_usbtv_hw_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
snd_pcm_lib_free_pages(substream);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_usbtv_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
chip->snd_buffer_pos = 0;
|
||||
chip->snd_period_pos = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void usbtv_audio_urb_received(struct urb *urb)
|
||||
{
|
||||
struct usbtv *chip = urb->context;
|
||||
struct snd_pcm_substream *substream = chip->snd_substream;
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
size_t i, frame_bytes, chunk_length, buffer_pos, period_pos;
|
||||
int period_elapsed;
|
||||
void *urb_current;
|
||||
|
||||
switch (urb->status) {
|
||||
case 0:
|
||||
case -ETIMEDOUT:
|
||||
break;
|
||||
case -ENOENT:
|
||||
case -EPROTO:
|
||||
case -ECONNRESET:
|
||||
case -ESHUTDOWN:
|
||||
return;
|
||||
default:
|
||||
dev_warn(chip->dev, "unknown audio urb status %i\n",
|
||||
urb->status);
|
||||
}
|
||||
|
||||
if (!atomic_read(&chip->snd_stream))
|
||||
return;
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frame_bytes = runtime->frame_bits >> 3;
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chunk_length = USBTV_CHUNK / frame_bytes;
|
||||
|
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buffer_pos = chip->snd_buffer_pos;
|
||||
period_pos = chip->snd_period_pos;
|
||||
period_elapsed = 0;
|
||||
|
||||
for (i = 0; i < urb->actual_length; i += USBTV_CHUNK_SIZE) {
|
||||
urb_current = urb->transfer_buffer + i + USBTV_AUDIO_HDRSIZE;
|
||||
|
||||
if (buffer_pos + chunk_length >= runtime->buffer_size) {
|
||||
size_t cnt = (runtime->buffer_size - buffer_pos) *
|
||||
frame_bytes;
|
||||
memcpy(runtime->dma_area + buffer_pos * frame_bytes,
|
||||
urb_current, cnt);
|
||||
memcpy(runtime->dma_area, urb_current + cnt,
|
||||
chunk_length * frame_bytes - cnt);
|
||||
} else {
|
||||
memcpy(runtime->dma_area + buffer_pos * frame_bytes,
|
||||
urb_current, chunk_length * frame_bytes);
|
||||
}
|
||||
|
||||
buffer_pos += chunk_length;
|
||||
period_pos += chunk_length;
|
||||
|
||||
if (buffer_pos >= runtime->buffer_size)
|
||||
buffer_pos -= runtime->buffer_size;
|
||||
|
||||
if (period_pos >= runtime->period_size) {
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||||
period_pos -= runtime->period_size;
|
||||
period_elapsed = 1;
|
||||
}
|
||||
}
|
||||
|
||||
snd_pcm_stream_lock(substream);
|
||||
|
||||
chip->snd_buffer_pos = buffer_pos;
|
||||
chip->snd_period_pos = period_pos;
|
||||
|
||||
snd_pcm_stream_unlock(substream);
|
||||
|
||||
if (period_elapsed)
|
||||
snd_pcm_period_elapsed(substream);
|
||||
|
||||
usb_submit_urb(urb, GFP_ATOMIC);
|
||||
}
|
||||
|
||||
static int usbtv_audio_start(struct usbtv *chip)
|
||||
{
|
||||
unsigned int pipe;
|
||||
static const u16 setup[][2] = {
|
||||
/* These seem to enable the device. */
|
||||
{ USBTV_BASE + 0x0008, 0x0001 },
|
||||
{ USBTV_BASE + 0x01d0, 0x00ff },
|
||||
{ USBTV_BASE + 0x01d9, 0x0002 },
|
||||
|
||||
{ USBTV_BASE + 0x01da, 0x0013 },
|
||||
{ USBTV_BASE + 0x01db, 0x0012 },
|
||||
{ USBTV_BASE + 0x01e9, 0x0002 },
|
||||
{ USBTV_BASE + 0x01ec, 0x006c },
|
||||
{ USBTV_BASE + 0x0294, 0x0020 },
|
||||
{ USBTV_BASE + 0x0255, 0x00cf },
|
||||
{ USBTV_BASE + 0x0256, 0x0020 },
|
||||
{ USBTV_BASE + 0x01eb, 0x0030 },
|
||||
{ USBTV_BASE + 0x027d, 0x00a6 },
|
||||
{ USBTV_BASE + 0x0280, 0x0011 },
|
||||
{ USBTV_BASE + 0x0281, 0x0040 },
|
||||
{ USBTV_BASE + 0x0282, 0x0011 },
|
||||
{ USBTV_BASE + 0x0283, 0x0040 },
|
||||
{ 0xf891, 0x0010 },
|
||||
|
||||
/* this sets the input from composite */
|
||||
{ USBTV_BASE + 0x0284, 0x00aa },
|
||||
};
|
||||
|
||||
chip->snd_bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
|
||||
if (chip->snd_bulk_urb == NULL)
|
||||
goto err_alloc_urb;
|
||||
|
||||
pipe = usb_rcvbulkpipe(chip->udev, USBTV_AUDIO_ENDP);
|
||||
|
||||
chip->snd_bulk_urb->transfer_buffer = kzalloc(
|
||||
USBTV_AUDIO_URBSIZE, GFP_KERNEL);
|
||||
if (chip->snd_bulk_urb->transfer_buffer == NULL)
|
||||
goto err_transfer_buffer;
|
||||
|
||||
usb_fill_bulk_urb(chip->snd_bulk_urb, chip->udev, pipe,
|
||||
chip->snd_bulk_urb->transfer_buffer, USBTV_AUDIO_URBSIZE,
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usbtv_audio_urb_received, chip);
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||||
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||||
/* starting the stream */
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usbtv_set_regs(chip, setup, ARRAY_SIZE(setup));
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|
||||
usb_clear_halt(chip->udev, pipe);
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||||
usb_submit_urb(chip->snd_bulk_urb, GFP_ATOMIC);
|
||||
|
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return 0;
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|
||||
err_transfer_buffer:
|
||||
usb_free_urb(chip->snd_bulk_urb);
|
||||
chip->snd_bulk_urb = NULL;
|
||||
|
||||
err_alloc_urb:
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
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static int usbtv_audio_stop(struct usbtv *chip)
|
||||
{
|
||||
static const u16 setup[][2] = {
|
||||
/* The original windows driver sometimes sends also:
|
||||
* { USBTV_BASE + 0x00a2, 0x0013 }
|
||||
* but it seems useless and its real effects are untested at
|
||||
* the moment.
|
||||
*/
|
||||
{ USBTV_BASE + 0x027d, 0x0000 },
|
||||
{ USBTV_BASE + 0x0280, 0x0010 },
|
||||
{ USBTV_BASE + 0x0282, 0x0010 },
|
||||
};
|
||||
|
||||
if (chip->snd_bulk_urb) {
|
||||
usb_kill_urb(chip->snd_bulk_urb);
|
||||
kfree(chip->snd_bulk_urb->transfer_buffer);
|
||||
usb_free_urb(chip->snd_bulk_urb);
|
||||
chip->snd_bulk_urb = NULL;
|
||||
}
|
||||
|
||||
usbtv_set_regs(chip, setup, ARRAY_SIZE(setup));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void usbtv_audio_suspend(struct usbtv *usbtv)
|
||||
{
|
||||
if (atomic_read(&usbtv->snd_stream) && usbtv->snd_bulk_urb)
|
||||
usb_kill_urb(usbtv->snd_bulk_urb);
|
||||
}
|
||||
|
||||
void usbtv_audio_resume(struct usbtv *usbtv)
|
||||
{
|
||||
if (atomic_read(&usbtv->snd_stream) && usbtv->snd_bulk_urb)
|
||||
usb_submit_urb(usbtv->snd_bulk_urb, GFP_ATOMIC);
|
||||
}
|
||||
|
||||
static void snd_usbtv_trigger(struct work_struct *work)
|
||||
{
|
||||
struct usbtv *chip = container_of(work, struct usbtv, snd_trigger);
|
||||
|
||||
if (atomic_read(&chip->snd_stream))
|
||||
usbtv_audio_start(chip);
|
||||
else
|
||||
usbtv_audio_stop(chip);
|
||||
}
|
||||
|
||||
static int snd_usbtv_card_trigger(struct snd_pcm_substream *substream, int cmd)
|
||||
{
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
case SNDRV_PCM_TRIGGER_RESUME:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||||
atomic_set(&chip->snd_stream, 1);
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
case SNDRV_PCM_TRIGGER_SUSPEND:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||||
atomic_set(&chip->snd_stream, 0);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
schedule_work(&chip->snd_trigger);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t snd_usbtv_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct usbtv *chip = snd_pcm_substream_chip(substream);
|
||||
|
||||
return chip->snd_buffer_pos;
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops snd_usbtv_pcm_ops = {
|
||||
.open = snd_usbtv_pcm_open,
|
||||
.close = snd_usbtv_pcm_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = snd_usbtv_hw_params,
|
||||
.hw_free = snd_usbtv_hw_free,
|
||||
.prepare = snd_usbtv_prepare,
|
||||
.trigger = snd_usbtv_card_trigger,
|
||||
.pointer = snd_usbtv_pointer,
|
||||
};
|
||||
|
||||
int usbtv_audio_init(struct usbtv *usbtv)
|
||||
{
|
||||
int rv;
|
||||
struct snd_card *card;
|
||||
struct snd_pcm *pcm;
|
||||
|
||||
INIT_WORK(&usbtv->snd_trigger, snd_usbtv_trigger);
|
||||
atomic_set(&usbtv->snd_stream, 0);
|
||||
|
||||
rv = snd_card_new(&usbtv->udev->dev, SNDRV_DEFAULT_IDX1, "usbtv",
|
||||
THIS_MODULE, 0, &card);
|
||||
if (rv < 0)
|
||||
return rv;
|
||||
|
||||
strlcpy(card->driver, usbtv->dev->driver->name, sizeof(card->driver));
|
||||
strlcpy(card->shortname, "usbtv", sizeof(card->shortname));
|
||||
snprintf(card->longname, sizeof(card->longname),
|
||||
"USBTV Audio at bus %d device %d", usbtv->udev->bus->busnum,
|
||||
usbtv->udev->devnum);
|
||||
|
||||
snd_card_set_dev(card, usbtv->dev);
|
||||
|
||||
usbtv->snd = card;
|
||||
|
||||
rv = snd_pcm_new(card, "USBTV Audio", 0, 0, 1, &pcm);
|
||||
if (rv < 0)
|
||||
goto err;
|
||||
|
||||
strlcpy(pcm->name, "USBTV Audio Input", sizeof(pcm->name));
|
||||
pcm->info_flags = 0;
|
||||
pcm->private_data = usbtv;
|
||||
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usbtv_pcm_ops);
|
||||
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
|
||||
snd_dma_continuous_data(GFP_KERNEL), USBTV_AUDIO_BUFFER,
|
||||
USBTV_AUDIO_BUFFER);
|
||||
|
||||
rv = snd_card_register(card);
|
||||
if (rv)
|
||||
goto err;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
usbtv->snd = NULL;
|
||||
snd_card_free(card);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
void usbtv_audio_free(struct usbtv *usbtv)
|
||||
{
|
||||
if (usbtv->snd && usbtv->udev) {
|
||||
snd_card_free(usbtv->snd);
|
||||
usbtv->snd = NULL;
|
||||
}
|
||||
}
|
||||
145
drivers/media/usb/usbtv/usbtv-core.c
Normal file
145
drivers/media/usb/usbtv/usbtv-core.c
Normal file
|
|
@ -0,0 +1,145 @@
|
|||
/*
|
||||
* Fushicai USBTV007 Audio-Video Grabber Driver
|
||||
*
|
||||
* Product web site:
|
||||
* http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html
|
||||
*
|
||||
* Following LWN articles were very useful in construction of this driver:
|
||||
* Video4Linux2 API series: http://lwn.net/Articles/203924/
|
||||
* videobuf2 API explanation: http://lwn.net/Articles/447435/
|
||||
* Thanks go to Jonathan Corbet for providing this quality documentation.
|
||||
* He is awesome.
|
||||
*
|
||||
* Copyright (c) 2013 Lubomir Rintel
|
||||
* All rights reserved.
|
||||
* No physical hardware was harmed running Windows during the
|
||||
* reverse-engineering activity
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL").
|
||||
*/
|
||||
|
||||
#include "usbtv.h"
|
||||
|
||||
int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size)
|
||||
{
|
||||
int ret;
|
||||
int pipe = usb_rcvctrlpipe(usbtv->udev, 0);
|
||||
int i;
|
||||
|
||||
for (i = 0; i < size; i++) {
|
||||
u16 index = regs[i][0];
|
||||
u16 value = regs[i][1];
|
||||
|
||||
ret = usb_control_msg(usbtv->udev, pipe, USBTV_REQUEST_REG,
|
||||
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||||
value, index, NULL, 0, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
int ret;
|
||||
int size;
|
||||
struct device *dev = &intf->dev;
|
||||
struct usbtv *usbtv;
|
||||
|
||||
/* Checks that the device is what we think it is. */
|
||||
if (intf->num_altsetting != 2)
|
||||
return -ENODEV;
|
||||
if (intf->altsetting[1].desc.bNumEndpoints != 4)
|
||||
return -ENODEV;
|
||||
|
||||
/* Packet size is split into 11 bits of base size and count of
|
||||
* extra multiplies of it.*/
|
||||
size = usb_endpoint_maxp(&intf->altsetting[1].endpoint[0].desc);
|
||||
size = (size & 0x07ff) * (((size & 0x1800) >> 11) + 1);
|
||||
|
||||
/* Device structure */
|
||||
usbtv = kzalloc(sizeof(struct usbtv), GFP_KERNEL);
|
||||
if (usbtv == NULL)
|
||||
return -ENOMEM;
|
||||
usbtv->dev = dev;
|
||||
usbtv->udev = usb_get_dev(interface_to_usbdev(intf));
|
||||
|
||||
usbtv->iso_size = size;
|
||||
|
||||
usb_set_intfdata(intf, usbtv);
|
||||
|
||||
ret = usbtv_video_init(usbtv);
|
||||
if (ret < 0)
|
||||
goto usbtv_video_fail;
|
||||
|
||||
ret = usbtv_audio_init(usbtv);
|
||||
if (ret < 0)
|
||||
goto usbtv_audio_fail;
|
||||
|
||||
/* for simplicity we exploit the v4l2_device reference counting */
|
||||
v4l2_device_get(&usbtv->v4l2_dev);
|
||||
|
||||
dev_info(dev, "Fushicai USBTV007 Audio-Video Grabber\n");
|
||||
return 0;
|
||||
|
||||
usbtv_audio_fail:
|
||||
usbtv_video_free(usbtv);
|
||||
|
||||
usbtv_video_fail:
|
||||
usb_set_intfdata(intf, NULL);
|
||||
usb_put_dev(usbtv->udev);
|
||||
kfree(usbtv);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void usbtv_disconnect(struct usb_interface *intf)
|
||||
{
|
||||
struct usbtv *usbtv = usb_get_intfdata(intf);
|
||||
|
||||
usb_set_intfdata(intf, NULL);
|
||||
|
||||
if (!usbtv)
|
||||
return;
|
||||
|
||||
usbtv_audio_free(usbtv);
|
||||
usbtv_video_free(usbtv);
|
||||
|
||||
usb_put_dev(usbtv->udev);
|
||||
usbtv->udev = NULL;
|
||||
|
||||
/* the usbtv structure will be deallocated when v4l2 will be
|
||||
done using it */
|
||||
v4l2_device_put(&usbtv->v4l2_dev);
|
||||
}
|
||||
|
||||
static struct usb_device_id usbtv_id_table[] = {
|
||||
{ USB_DEVICE(0x1b71, 0x3002) },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(usb, usbtv_id_table);
|
||||
|
||||
MODULE_AUTHOR("Lubomir Rintel, Federico Simoncelli");
|
||||
MODULE_DESCRIPTION("Fushicai USBTV007 Audio-Video Grabber Driver");
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
||||
|
||||
static struct usb_driver usbtv_usb_driver = {
|
||||
.name = "usbtv",
|
||||
.id_table = usbtv_id_table,
|
||||
.probe = usbtv_probe,
|
||||
.disconnect = usbtv_disconnect,
|
||||
};
|
||||
|
||||
module_usb_driver(usbtv_usb_driver);
|
||||
738
drivers/media/usb/usbtv/usbtv-video.c
Normal file
738
drivers/media/usb/usbtv/usbtv-video.c
Normal file
|
|
@ -0,0 +1,738 @@
|
|||
/*
|
||||
* Fushicai USBTV007 Audio-Video Grabber Driver
|
||||
*
|
||||
* Product web site:
|
||||
* http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html
|
||||
*
|
||||
* Following LWN articles were very useful in construction of this driver:
|
||||
* Video4Linux2 API series: http://lwn.net/Articles/203924/
|
||||
* videobuf2 API explanation: http://lwn.net/Articles/447435/
|
||||
* Thanks go to Jonathan Corbet for providing this quality documentation.
|
||||
* He is awesome.
|
||||
*
|
||||
* Copyright (c) 2013 Lubomir Rintel
|
||||
* All rights reserved.
|
||||
* No physical hardware was harmed running Windows during the
|
||||
* reverse-engineering activity
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL").
|
||||
*/
|
||||
|
||||
#include <media/v4l2-ioctl.h>
|
||||
#include <media/videobuf2-core.h>
|
||||
|
||||
#include "usbtv.h"
|
||||
|
||||
static struct usbtv_norm_params norm_params[] = {
|
||||
{
|
||||
.norm = V4L2_STD_525_60,
|
||||
.cap_width = 720,
|
||||
.cap_height = 480,
|
||||
},
|
||||
{
|
||||
.norm = V4L2_STD_PAL,
|
||||
.cap_width = 720,
|
||||
.cap_height = 576,
|
||||
}
|
||||
};
|
||||
|
||||
static int usbtv_configure_for_norm(struct usbtv *usbtv, v4l2_std_id norm)
|
||||
{
|
||||
int i, ret = 0;
|
||||
struct usbtv_norm_params *params = NULL;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(norm_params); i++) {
|
||||
if (norm_params[i].norm & norm) {
|
||||
params = &norm_params[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (params) {
|
||||
usbtv->width = params->cap_width;
|
||||
usbtv->height = params->cap_height;
|
||||
usbtv->n_chunks = usbtv->width * usbtv->height
|
||||
/ 4 / USBTV_CHUNK;
|
||||
usbtv->norm = params->norm;
|
||||
} else
|
||||
ret = -EINVAL;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbtv_select_input(struct usbtv *usbtv, int input)
|
||||
{
|
||||
int ret;
|
||||
|
||||
static const u16 composite[][2] = {
|
||||
{ USBTV_BASE + 0x0105, 0x0060 },
|
||||
{ USBTV_BASE + 0x011f, 0x00f2 },
|
||||
{ USBTV_BASE + 0x0127, 0x0060 },
|
||||
{ USBTV_BASE + 0x00ae, 0x0010 },
|
||||
{ USBTV_BASE + 0x0239, 0x0060 },
|
||||
};
|
||||
|
||||
static const u16 svideo[][2] = {
|
||||
{ USBTV_BASE + 0x0105, 0x0010 },
|
||||
{ USBTV_BASE + 0x011f, 0x00ff },
|
||||
{ USBTV_BASE + 0x0127, 0x0060 },
|
||||
{ USBTV_BASE + 0x00ae, 0x0030 },
|
||||
{ USBTV_BASE + 0x0239, 0x0060 },
|
||||
};
|
||||
|
||||
switch (input) {
|
||||
case USBTV_COMPOSITE_INPUT:
|
||||
ret = usbtv_set_regs(usbtv, composite, ARRAY_SIZE(composite));
|
||||
break;
|
||||
case USBTV_SVIDEO_INPUT:
|
||||
ret = usbtv_set_regs(usbtv, svideo, ARRAY_SIZE(svideo));
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
usbtv->input = input;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbtv_select_norm(struct usbtv *usbtv, v4l2_std_id norm)
|
||||
{
|
||||
int ret;
|
||||
static const u16 pal[][2] = {
|
||||
{ USBTV_BASE + 0x001a, 0x0068 },
|
||||
{ USBTV_BASE + 0x010e, 0x0072 },
|
||||
{ USBTV_BASE + 0x010f, 0x00a2 },
|
||||
{ USBTV_BASE + 0x0112, 0x00b0 },
|
||||
{ USBTV_BASE + 0x0117, 0x0001 },
|
||||
{ USBTV_BASE + 0x0118, 0x002c },
|
||||
{ USBTV_BASE + 0x012d, 0x0010 },
|
||||
{ USBTV_BASE + 0x012f, 0x0020 },
|
||||
{ USBTV_BASE + 0x024f, 0x0002 },
|
||||
{ USBTV_BASE + 0x0254, 0x0059 },
|
||||
{ USBTV_BASE + 0x025a, 0x0016 },
|
||||
{ USBTV_BASE + 0x025b, 0x0035 },
|
||||
{ USBTV_BASE + 0x0263, 0x0017 },
|
||||
{ USBTV_BASE + 0x0266, 0x0016 },
|
||||
{ USBTV_BASE + 0x0267, 0x0036 }
|
||||
};
|
||||
|
||||
static const u16 ntsc[][2] = {
|
||||
{ USBTV_BASE + 0x001a, 0x0079 },
|
||||
{ USBTV_BASE + 0x010e, 0x0068 },
|
||||
{ USBTV_BASE + 0x010f, 0x009c },
|
||||
{ USBTV_BASE + 0x0112, 0x00f0 },
|
||||
{ USBTV_BASE + 0x0117, 0x0000 },
|
||||
{ USBTV_BASE + 0x0118, 0x00fc },
|
||||
{ USBTV_BASE + 0x012d, 0x0004 },
|
||||
{ USBTV_BASE + 0x012f, 0x0008 },
|
||||
{ USBTV_BASE + 0x024f, 0x0001 },
|
||||
{ USBTV_BASE + 0x0254, 0x005f },
|
||||
{ USBTV_BASE + 0x025a, 0x0012 },
|
||||
{ USBTV_BASE + 0x025b, 0x0001 },
|
||||
{ USBTV_BASE + 0x0263, 0x001c },
|
||||
{ USBTV_BASE + 0x0266, 0x0011 },
|
||||
{ USBTV_BASE + 0x0267, 0x0005 }
|
||||
};
|
||||
|
||||
ret = usbtv_configure_for_norm(usbtv, norm);
|
||||
|
||||
if (!ret) {
|
||||
if (norm & V4L2_STD_525_60)
|
||||
ret = usbtv_set_regs(usbtv, ntsc, ARRAY_SIZE(ntsc));
|
||||
else if (norm & V4L2_STD_PAL)
|
||||
ret = usbtv_set_regs(usbtv, pal, ARRAY_SIZE(pal));
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbtv_setup_capture(struct usbtv *usbtv)
|
||||
{
|
||||
int ret;
|
||||
static const u16 setup[][2] = {
|
||||
/* These seem to enable the device. */
|
||||
{ USBTV_BASE + 0x0008, 0x0001 },
|
||||
{ USBTV_BASE + 0x01d0, 0x00ff },
|
||||
{ USBTV_BASE + 0x01d9, 0x0002 },
|
||||
|
||||
/* These seem to influence color parameters, such as
|
||||
* brightness, etc. */
|
||||
{ USBTV_BASE + 0x0239, 0x0040 },
|
||||
{ USBTV_BASE + 0x0240, 0x0000 },
|
||||
{ USBTV_BASE + 0x0241, 0x0000 },
|
||||
{ USBTV_BASE + 0x0242, 0x0002 },
|
||||
{ USBTV_BASE + 0x0243, 0x0080 },
|
||||
{ USBTV_BASE + 0x0244, 0x0012 },
|
||||
{ USBTV_BASE + 0x0245, 0x0090 },
|
||||
{ USBTV_BASE + 0x0246, 0x0000 },
|
||||
|
||||
{ USBTV_BASE + 0x0278, 0x002d },
|
||||
{ USBTV_BASE + 0x0279, 0x000a },
|
||||
{ USBTV_BASE + 0x027a, 0x0032 },
|
||||
{ 0xf890, 0x000c },
|
||||
{ 0xf894, 0x0086 },
|
||||
|
||||
{ USBTV_BASE + 0x00ac, 0x00c0 },
|
||||
{ USBTV_BASE + 0x00ad, 0x0000 },
|
||||
{ USBTV_BASE + 0x00a2, 0x0012 },
|
||||
{ USBTV_BASE + 0x00a3, 0x00e0 },
|
||||
{ USBTV_BASE + 0x00a4, 0x0028 },
|
||||
{ USBTV_BASE + 0x00a5, 0x0082 },
|
||||
{ USBTV_BASE + 0x00a7, 0x0080 },
|
||||
{ USBTV_BASE + 0x0000, 0x0014 },
|
||||
{ USBTV_BASE + 0x0006, 0x0003 },
|
||||
{ USBTV_BASE + 0x0090, 0x0099 },
|
||||
{ USBTV_BASE + 0x0091, 0x0090 },
|
||||
{ USBTV_BASE + 0x0094, 0x0068 },
|
||||
{ USBTV_BASE + 0x0095, 0x0070 },
|
||||
{ USBTV_BASE + 0x009c, 0x0030 },
|
||||
{ USBTV_BASE + 0x009d, 0x00c0 },
|
||||
{ USBTV_BASE + 0x009e, 0x00e0 },
|
||||
{ USBTV_BASE + 0x0019, 0x0006 },
|
||||
{ USBTV_BASE + 0x008c, 0x00ba },
|
||||
{ USBTV_BASE + 0x0101, 0x00ff },
|
||||
{ USBTV_BASE + 0x010c, 0x00b3 },
|
||||
{ USBTV_BASE + 0x01b2, 0x0080 },
|
||||
{ USBTV_BASE + 0x01b4, 0x00a0 },
|
||||
{ USBTV_BASE + 0x014c, 0x00ff },
|
||||
{ USBTV_BASE + 0x014d, 0x00ca },
|
||||
{ USBTV_BASE + 0x0113, 0x0053 },
|
||||
{ USBTV_BASE + 0x0119, 0x008a },
|
||||
{ USBTV_BASE + 0x013c, 0x0003 },
|
||||
{ USBTV_BASE + 0x0150, 0x009c },
|
||||
{ USBTV_BASE + 0x0151, 0x0071 },
|
||||
{ USBTV_BASE + 0x0152, 0x00c6 },
|
||||
{ USBTV_BASE + 0x0153, 0x0084 },
|
||||
{ USBTV_BASE + 0x0154, 0x00bc },
|
||||
{ USBTV_BASE + 0x0155, 0x00a0 },
|
||||
{ USBTV_BASE + 0x0156, 0x00a0 },
|
||||
{ USBTV_BASE + 0x0157, 0x009c },
|
||||
{ USBTV_BASE + 0x0158, 0x001f },
|
||||
{ USBTV_BASE + 0x0159, 0x0006 },
|
||||
{ USBTV_BASE + 0x015d, 0x0000 },
|
||||
|
||||
{ USBTV_BASE + 0x0003, 0x0004 },
|
||||
{ USBTV_BASE + 0x0100, 0x00d3 },
|
||||
{ USBTV_BASE + 0x0115, 0x0015 },
|
||||
{ USBTV_BASE + 0x0220, 0x002e },
|
||||
{ USBTV_BASE + 0x0225, 0x0008 },
|
||||
{ USBTV_BASE + 0x024e, 0x0002 },
|
||||
{ USBTV_BASE + 0x024e, 0x0002 },
|
||||
{ USBTV_BASE + 0x024f, 0x0002 },
|
||||
};
|
||||
|
||||
ret = usbtv_set_regs(usbtv, setup, ARRAY_SIZE(setup));
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = usbtv_select_norm(usbtv, usbtv->norm);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = usbtv_select_input(usbtv, usbtv->input);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Copy data from chunk into a frame buffer, deinterlacing the data
|
||||
* into every second line. Unfortunately, they don't align nicely into
|
||||
* 720 pixel lines, as the chunk is 240 words long, which is 480 pixels.
|
||||
* Therefore, we break down the chunk into two halves before copyting,
|
||||
* so that we can interleave a line if needed. */
|
||||
static void usbtv_chunk_to_vbuf(u32 *frame, __be32 *src, int chunk_no, int odd)
|
||||
{
|
||||
int half;
|
||||
|
||||
for (half = 0; half < 2; half++) {
|
||||
int part_no = chunk_no * 2 + half;
|
||||
int line = part_no / 3;
|
||||
int part_index = (line * 2 + !odd) * 3 + (part_no % 3);
|
||||
|
||||
u32 *dst = &frame[part_index * USBTV_CHUNK/2];
|
||||
|
||||
memcpy(dst, src, USBTV_CHUNK/2 * sizeof(*src));
|
||||
src += USBTV_CHUNK/2;
|
||||
}
|
||||
}
|
||||
|
||||
/* Called for each 256-byte image chunk.
|
||||
* First word identifies the chunk, followed by 240 words of image
|
||||
* data and padding. */
|
||||
static void usbtv_image_chunk(struct usbtv *usbtv, __be32 *chunk)
|
||||
{
|
||||
int frame_id, odd, chunk_no;
|
||||
u32 *frame;
|
||||
struct usbtv_buf *buf;
|
||||
unsigned long flags;
|
||||
|
||||
/* Ignore corrupted lines. */
|
||||
if (!USBTV_MAGIC_OK(chunk))
|
||||
return;
|
||||
frame_id = USBTV_FRAME_ID(chunk);
|
||||
odd = USBTV_ODD(chunk);
|
||||
chunk_no = USBTV_CHUNK_NO(chunk);
|
||||
if (chunk_no >= usbtv->n_chunks)
|
||||
return;
|
||||
|
||||
/* Beginning of a frame. */
|
||||
if (chunk_no == 0) {
|
||||
usbtv->frame_id = frame_id;
|
||||
usbtv->chunks_done = 0;
|
||||
}
|
||||
|
||||
if (usbtv->frame_id != frame_id)
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&usbtv->buflock, flags);
|
||||
if (list_empty(&usbtv->bufs)) {
|
||||
/* No free buffers. Userspace likely too slow. */
|
||||
spin_unlock_irqrestore(&usbtv->buflock, flags);
|
||||
return;
|
||||
}
|
||||
|
||||
/* First available buffer. */
|
||||
buf = list_first_entry(&usbtv->bufs, struct usbtv_buf, list);
|
||||
frame = vb2_plane_vaddr(&buf->vb, 0);
|
||||
|
||||
/* Copy the chunk data. */
|
||||
usbtv_chunk_to_vbuf(frame, &chunk[1], chunk_no, odd);
|
||||
usbtv->chunks_done++;
|
||||
|
||||
/* Last chunk in a frame, signalling an end */
|
||||
if (odd && chunk_no == usbtv->n_chunks-1) {
|
||||
int size = vb2_plane_size(&buf->vb, 0);
|
||||
enum vb2_buffer_state state = usbtv->chunks_done ==
|
||||
usbtv->n_chunks ?
|
||||
VB2_BUF_STATE_DONE :
|
||||
VB2_BUF_STATE_ERROR;
|
||||
|
||||
buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
|
||||
buf->vb.v4l2_buf.sequence = usbtv->sequence++;
|
||||
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
|
||||
vb2_set_plane_payload(&buf->vb, 0, size);
|
||||
vb2_buffer_done(&buf->vb, state);
|
||||
list_del(&buf->list);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&usbtv->buflock, flags);
|
||||
}
|
||||
|
||||
/* Got image data. Each packet contains a number of 256-word chunks we
|
||||
* compose the image from. */
|
||||
static void usbtv_iso_cb(struct urb *ip)
|
||||
{
|
||||
int ret;
|
||||
int i;
|
||||
struct usbtv *usbtv = (struct usbtv *)ip->context;
|
||||
|
||||
switch (ip->status) {
|
||||
/* All fine. */
|
||||
case 0:
|
||||
break;
|
||||
/* Device disconnected or capture stopped? */
|
||||
case -ENODEV:
|
||||
case -ENOENT:
|
||||
case -ECONNRESET:
|
||||
case -ESHUTDOWN:
|
||||
return;
|
||||
/* Unknown error. Retry. */
|
||||
default:
|
||||
dev_warn(usbtv->dev, "Bad response for ISO request.\n");
|
||||
goto resubmit;
|
||||
}
|
||||
|
||||
for (i = 0; i < ip->number_of_packets; i++) {
|
||||
int size = ip->iso_frame_desc[i].actual_length;
|
||||
unsigned char *data = ip->transfer_buffer +
|
||||
ip->iso_frame_desc[i].offset;
|
||||
int offset;
|
||||
|
||||
for (offset = 0; USBTV_CHUNK_SIZE * offset < size; offset++)
|
||||
usbtv_image_chunk(usbtv,
|
||||
(__be32 *)&data[USBTV_CHUNK_SIZE * offset]);
|
||||
}
|
||||
|
||||
resubmit:
|
||||
ret = usb_submit_urb(ip, GFP_ATOMIC);
|
||||
if (ret < 0)
|
||||
dev_warn(usbtv->dev, "Could not resubmit ISO URB\n");
|
||||
}
|
||||
|
||||
static struct urb *usbtv_setup_iso_transfer(struct usbtv *usbtv)
|
||||
{
|
||||
struct urb *ip;
|
||||
int size = usbtv->iso_size;
|
||||
int i;
|
||||
|
||||
ip = usb_alloc_urb(USBTV_ISOC_PACKETS, GFP_KERNEL);
|
||||
if (ip == NULL)
|
||||
return NULL;
|
||||
|
||||
ip->dev = usbtv->udev;
|
||||
ip->context = usbtv;
|
||||
ip->pipe = usb_rcvisocpipe(usbtv->udev, USBTV_VIDEO_ENDP);
|
||||
ip->interval = 1;
|
||||
ip->transfer_flags = URB_ISO_ASAP;
|
||||
ip->transfer_buffer = kzalloc(size * USBTV_ISOC_PACKETS,
|
||||
GFP_KERNEL);
|
||||
ip->complete = usbtv_iso_cb;
|
||||
ip->number_of_packets = USBTV_ISOC_PACKETS;
|
||||
ip->transfer_buffer_length = size * USBTV_ISOC_PACKETS;
|
||||
for (i = 0; i < USBTV_ISOC_PACKETS; i++) {
|
||||
ip->iso_frame_desc[i].offset = size * i;
|
||||
ip->iso_frame_desc[i].length = size;
|
||||
}
|
||||
|
||||
return ip;
|
||||
}
|
||||
|
||||
static void usbtv_stop(struct usbtv *usbtv)
|
||||
{
|
||||
int i;
|
||||
unsigned long flags;
|
||||
|
||||
/* Cancel running transfers. */
|
||||
for (i = 0; i < USBTV_ISOC_TRANSFERS; i++) {
|
||||
struct urb *ip = usbtv->isoc_urbs[i];
|
||||
|
||||
if (ip == NULL)
|
||||
continue;
|
||||
usb_kill_urb(ip);
|
||||
kfree(ip->transfer_buffer);
|
||||
usb_free_urb(ip);
|
||||
usbtv->isoc_urbs[i] = NULL;
|
||||
}
|
||||
|
||||
/* Return buffers to userspace. */
|
||||
spin_lock_irqsave(&usbtv->buflock, flags);
|
||||
while (!list_empty(&usbtv->bufs)) {
|
||||
struct usbtv_buf *buf = list_first_entry(&usbtv->bufs,
|
||||
struct usbtv_buf, list);
|
||||
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
||||
list_del(&buf->list);
|
||||
}
|
||||
spin_unlock_irqrestore(&usbtv->buflock, flags);
|
||||
}
|
||||
|
||||
static int usbtv_start(struct usbtv *usbtv)
|
||||
{
|
||||
int i;
|
||||
int ret;
|
||||
|
||||
usbtv_audio_suspend(usbtv);
|
||||
|
||||
ret = usb_set_interface(usbtv->udev, 0, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = usbtv_setup_capture(usbtv);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = usb_set_interface(usbtv->udev, 0, 1);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
usbtv_audio_resume(usbtv);
|
||||
|
||||
for (i = 0; i < USBTV_ISOC_TRANSFERS; i++) {
|
||||
struct urb *ip;
|
||||
|
||||
ip = usbtv_setup_iso_transfer(usbtv);
|
||||
if (ip == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto start_fail;
|
||||
}
|
||||
usbtv->isoc_urbs[i] = ip;
|
||||
|
||||
ret = usb_submit_urb(ip, GFP_KERNEL);
|
||||
if (ret < 0)
|
||||
goto start_fail;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
start_fail:
|
||||
usbtv_stop(usbtv);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbtv_querycap(struct file *file, void *priv,
|
||||
struct v4l2_capability *cap)
|
||||
{
|
||||
struct usbtv *dev = video_drvdata(file);
|
||||
|
||||
strlcpy(cap->driver, "usbtv", sizeof(cap->driver));
|
||||
strlcpy(cap->card, "usbtv", sizeof(cap->card));
|
||||
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
|
||||
cap->device_caps = V4L2_CAP_VIDEO_CAPTURE;
|
||||
cap->device_caps |= V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
|
||||
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_enum_input(struct file *file, void *priv,
|
||||
struct v4l2_input *i)
|
||||
{
|
||||
struct usbtv *dev = video_drvdata(file);
|
||||
|
||||
switch (i->index) {
|
||||
case USBTV_COMPOSITE_INPUT:
|
||||
strlcpy(i->name, "Composite", sizeof(i->name));
|
||||
break;
|
||||
case USBTV_SVIDEO_INPUT:
|
||||
strlcpy(i->name, "S-Video", sizeof(i->name));
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
i->type = V4L2_INPUT_TYPE_CAMERA;
|
||||
i->std = dev->vdev.tvnorms;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_enum_fmt_vid_cap(struct file *file, void *priv,
|
||||
struct v4l2_fmtdesc *f)
|
||||
{
|
||||
if (f->index > 0)
|
||||
return -EINVAL;
|
||||
|
||||
strlcpy(f->description, "16 bpp YUY2, 4:2:2, packed",
|
||||
sizeof(f->description));
|
||||
f->pixelformat = V4L2_PIX_FMT_YUYV;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_fmt_vid_cap(struct file *file, void *priv,
|
||||
struct v4l2_format *f)
|
||||
{
|
||||
struct usbtv *usbtv = video_drvdata(file);
|
||||
|
||||
f->fmt.pix.width = usbtv->width;
|
||||
f->fmt.pix.height = usbtv->height;
|
||||
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
|
||||
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
|
||||
f->fmt.pix.bytesperline = usbtv->width * 2;
|
||||
f->fmt.pix.sizeimage = (f->fmt.pix.bytesperline * f->fmt.pix.height);
|
||||
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_g_std(struct file *file, void *priv, v4l2_std_id *norm)
|
||||
{
|
||||
struct usbtv *usbtv = video_drvdata(file);
|
||||
*norm = usbtv->norm;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_s_std(struct file *file, void *priv, v4l2_std_id norm)
|
||||
{
|
||||
int ret = -EINVAL;
|
||||
struct usbtv *usbtv = video_drvdata(file);
|
||||
|
||||
if ((norm & V4L2_STD_525_60) || (norm & V4L2_STD_PAL))
|
||||
ret = usbtv_select_norm(usbtv, norm);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbtv_g_input(struct file *file, void *priv, unsigned int *i)
|
||||
{
|
||||
struct usbtv *usbtv = video_drvdata(file);
|
||||
*i = usbtv->input;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int usbtv_s_input(struct file *file, void *priv, unsigned int i)
|
||||
{
|
||||
struct usbtv *usbtv = video_drvdata(file);
|
||||
|
||||
return usbtv_select_input(usbtv, i);
|
||||
}
|
||||
|
||||
static struct v4l2_ioctl_ops usbtv_ioctl_ops = {
|
||||
.vidioc_querycap = usbtv_querycap,
|
||||
.vidioc_enum_input = usbtv_enum_input,
|
||||
.vidioc_enum_fmt_vid_cap = usbtv_enum_fmt_vid_cap,
|
||||
.vidioc_g_fmt_vid_cap = usbtv_fmt_vid_cap,
|
||||
.vidioc_try_fmt_vid_cap = usbtv_fmt_vid_cap,
|
||||
.vidioc_s_fmt_vid_cap = usbtv_fmt_vid_cap,
|
||||
.vidioc_g_std = usbtv_g_std,
|
||||
.vidioc_s_std = usbtv_s_std,
|
||||
.vidioc_g_input = usbtv_g_input,
|
||||
.vidioc_s_input = usbtv_s_input,
|
||||
|
||||
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
||||
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
||||
.vidioc_querybuf = vb2_ioctl_querybuf,
|
||||
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
||||
.vidioc_qbuf = vb2_ioctl_qbuf,
|
||||
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
||||
.vidioc_streamon = vb2_ioctl_streamon,
|
||||
.vidioc_streamoff = vb2_ioctl_streamoff,
|
||||
};
|
||||
|
||||
static struct v4l2_file_operations usbtv_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
.mmap = vb2_fop_mmap,
|
||||
.open = v4l2_fh_open,
|
||||
.release = vb2_fop_release,
|
||||
.read = vb2_fop_read,
|
||||
.poll = vb2_fop_poll,
|
||||
};
|
||||
|
||||
static int usbtv_queue_setup(struct vb2_queue *vq,
|
||||
const struct v4l2_format *v4l_fmt, unsigned int *nbuffers,
|
||||
unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
|
||||
{
|
||||
struct usbtv *usbtv = vb2_get_drv_priv(vq);
|
||||
|
||||
if (*nbuffers < 2)
|
||||
*nbuffers = 2;
|
||||
*nplanes = 1;
|
||||
sizes[0] = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void usbtv_buf_queue(struct vb2_buffer *vb)
|
||||
{
|
||||
struct usbtv *usbtv = vb2_get_drv_priv(vb->vb2_queue);
|
||||
struct usbtv_buf *buf = container_of(vb, struct usbtv_buf, vb);
|
||||
unsigned long flags;
|
||||
|
||||
if (usbtv->udev == NULL) {
|
||||
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
|
||||
return;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&usbtv->buflock, flags);
|
||||
list_add_tail(&buf->list, &usbtv->bufs);
|
||||
spin_unlock_irqrestore(&usbtv->buflock, flags);
|
||||
}
|
||||
|
||||
static int usbtv_start_streaming(struct vb2_queue *vq, unsigned int count)
|
||||
{
|
||||
struct usbtv *usbtv = vb2_get_drv_priv(vq);
|
||||
|
||||
if (usbtv->udev == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
return usbtv_start(usbtv);
|
||||
}
|
||||
|
||||
static void usbtv_stop_streaming(struct vb2_queue *vq)
|
||||
{
|
||||
struct usbtv *usbtv = vb2_get_drv_priv(vq);
|
||||
|
||||
if (usbtv->udev)
|
||||
usbtv_stop(usbtv);
|
||||
}
|
||||
|
||||
static struct vb2_ops usbtv_vb2_ops = {
|
||||
.queue_setup = usbtv_queue_setup,
|
||||
.buf_queue = usbtv_buf_queue,
|
||||
.start_streaming = usbtv_start_streaming,
|
||||
.stop_streaming = usbtv_stop_streaming,
|
||||
};
|
||||
|
||||
static void usbtv_release(struct v4l2_device *v4l2_dev)
|
||||
{
|
||||
struct usbtv *usbtv = container_of(v4l2_dev, struct usbtv, v4l2_dev);
|
||||
|
||||
v4l2_device_unregister(&usbtv->v4l2_dev);
|
||||
vb2_queue_release(&usbtv->vb2q);
|
||||
kfree(usbtv);
|
||||
}
|
||||
|
||||
int usbtv_video_init(struct usbtv *usbtv)
|
||||
{
|
||||
int ret;
|
||||
|
||||
(void)usbtv_configure_for_norm(usbtv, V4L2_STD_525_60);
|
||||
|
||||
spin_lock_init(&usbtv->buflock);
|
||||
mutex_init(&usbtv->v4l2_lock);
|
||||
mutex_init(&usbtv->vb2q_lock);
|
||||
INIT_LIST_HEAD(&usbtv->bufs);
|
||||
|
||||
/* videobuf2 structure */
|
||||
usbtv->vb2q.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
||||
usbtv->vb2q.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
|
||||
usbtv->vb2q.drv_priv = usbtv;
|
||||
usbtv->vb2q.buf_struct_size = sizeof(struct usbtv_buf);
|
||||
usbtv->vb2q.ops = &usbtv_vb2_ops;
|
||||
usbtv->vb2q.mem_ops = &vb2_vmalloc_memops;
|
||||
usbtv->vb2q.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
||||
usbtv->vb2q.lock = &usbtv->vb2q_lock;
|
||||
ret = vb2_queue_init(&usbtv->vb2q);
|
||||
if (ret < 0) {
|
||||
dev_warn(usbtv->dev, "Could not initialize videobuf2 queue\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* v4l2 structure */
|
||||
usbtv->v4l2_dev.release = usbtv_release;
|
||||
ret = v4l2_device_register(usbtv->dev, &usbtv->v4l2_dev);
|
||||
if (ret < 0) {
|
||||
dev_warn(usbtv->dev, "Could not register v4l2 device\n");
|
||||
goto v4l2_fail;
|
||||
}
|
||||
|
||||
/* Video structure */
|
||||
strlcpy(usbtv->vdev.name, "usbtv", sizeof(usbtv->vdev.name));
|
||||
usbtv->vdev.v4l2_dev = &usbtv->v4l2_dev;
|
||||
usbtv->vdev.release = video_device_release_empty;
|
||||
usbtv->vdev.fops = &usbtv_fops;
|
||||
usbtv->vdev.ioctl_ops = &usbtv_ioctl_ops;
|
||||
usbtv->vdev.tvnorms = USBTV_TV_STD;
|
||||
usbtv->vdev.queue = &usbtv->vb2q;
|
||||
usbtv->vdev.lock = &usbtv->v4l2_lock;
|
||||
video_set_drvdata(&usbtv->vdev, usbtv);
|
||||
ret = video_register_device(&usbtv->vdev, VFL_TYPE_GRABBER, -1);
|
||||
if (ret < 0) {
|
||||
dev_warn(usbtv->dev, "Could not register video device\n");
|
||||
goto vdev_fail;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
vdev_fail:
|
||||
v4l2_device_unregister(&usbtv->v4l2_dev);
|
||||
v4l2_fail:
|
||||
vb2_queue_release(&usbtv->vb2q);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void usbtv_video_free(struct usbtv *usbtv)
|
||||
{
|
||||
mutex_lock(&usbtv->vb2q_lock);
|
||||
mutex_lock(&usbtv->v4l2_lock);
|
||||
|
||||
usbtv_stop(usbtv);
|
||||
video_unregister_device(&usbtv->vdev);
|
||||
v4l2_device_disconnect(&usbtv->v4l2_dev);
|
||||
|
||||
mutex_unlock(&usbtv->v4l2_lock);
|
||||
mutex_unlock(&usbtv->vb2q_lock);
|
||||
|
||||
v4l2_device_put(&usbtv->v4l2_dev);
|
||||
}
|
||||
118
drivers/media/usb/usbtv/usbtv.h
Normal file
118
drivers/media/usb/usbtv/usbtv.h
Normal file
|
|
@ -0,0 +1,118 @@
|
|||
/*
|
||||
* Fushicai USBTV007 Audio-Video Grabber Driver
|
||||
*
|
||||
* Copyright (c) 2013 Lubomir Rintel
|
||||
* All rights reserved.
|
||||
* No physical hardware was harmed running Windows during the
|
||||
* reverse-engineering activity
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer,
|
||||
* without modification.
|
||||
* 2. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* Alternatively, this software may be distributed under the terms of the
|
||||
* GNU General Public License ("GPL").
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/usb.h>
|
||||
|
||||
#include <media/v4l2-device.h>
|
||||
#include <media/videobuf2-vmalloc.h>
|
||||
|
||||
/* Hardware. */
|
||||
#define USBTV_VIDEO_ENDP 0x81
|
||||
#define USBTV_AUDIO_ENDP 0x83
|
||||
#define USBTV_BASE 0xc000
|
||||
#define USBTV_REQUEST_REG 12
|
||||
|
||||
/* Number of concurrent isochronous urbs submitted.
|
||||
* Higher numbers was seen to overly saturate the USB bus. */
|
||||
#define USBTV_ISOC_TRANSFERS 16
|
||||
#define USBTV_ISOC_PACKETS 8
|
||||
|
||||
#define USBTV_CHUNK_SIZE 256
|
||||
#define USBTV_CHUNK 240
|
||||
|
||||
#define USBTV_AUDIO_URBSIZE 20480
|
||||
#define USBTV_AUDIO_HDRSIZE 4
|
||||
#define USBTV_AUDIO_BUFFER 65536
|
||||
|
||||
/* Chunk header. */
|
||||
#define USBTV_MAGIC_OK(chunk) ((be32_to_cpu(chunk[0]) & 0xff000000) \
|
||||
== 0x88000000)
|
||||
#define USBTV_FRAME_ID(chunk) ((be32_to_cpu(chunk[0]) & 0x00ff0000) >> 16)
|
||||
#define USBTV_ODD(chunk) ((be32_to_cpu(chunk[0]) & 0x0000f000) >> 15)
|
||||
#define USBTV_CHUNK_NO(chunk) (be32_to_cpu(chunk[0]) & 0x00000fff)
|
||||
|
||||
#define USBTV_TV_STD (V4L2_STD_525_60 | V4L2_STD_PAL)
|
||||
|
||||
/* parameters for supported TV norms */
|
||||
struct usbtv_norm_params {
|
||||
v4l2_std_id norm;
|
||||
int cap_width, cap_height;
|
||||
};
|
||||
|
||||
/* A single videobuf2 frame buffer. */
|
||||
struct usbtv_buf {
|
||||
struct vb2_buffer vb;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
/* Per-device structure. */
|
||||
struct usbtv {
|
||||
struct device *dev;
|
||||
struct usb_device *udev;
|
||||
|
||||
/* video */
|
||||
struct v4l2_device v4l2_dev;
|
||||
struct video_device vdev;
|
||||
struct vb2_queue vb2q;
|
||||
struct mutex v4l2_lock;
|
||||
struct mutex vb2q_lock;
|
||||
|
||||
/* List of videobuf2 buffers protected by a lock. */
|
||||
spinlock_t buflock;
|
||||
struct list_head bufs;
|
||||
|
||||
/* Number of currently processed frame, useful find
|
||||
* out when a new one begins. */
|
||||
u32 frame_id;
|
||||
int chunks_done;
|
||||
|
||||
enum {
|
||||
USBTV_COMPOSITE_INPUT,
|
||||
USBTV_SVIDEO_INPUT,
|
||||
} input;
|
||||
v4l2_std_id norm;
|
||||
int width, height;
|
||||
int n_chunks;
|
||||
int iso_size;
|
||||
unsigned int sequence;
|
||||
struct urb *isoc_urbs[USBTV_ISOC_TRANSFERS];
|
||||
|
||||
/* audio */
|
||||
struct snd_card *snd;
|
||||
struct snd_pcm_substream *snd_substream;
|
||||
atomic_t snd_stream;
|
||||
struct work_struct snd_trigger;
|
||||
struct urb *snd_bulk_urb;
|
||||
size_t snd_buffer_pos;
|
||||
size_t snd_period_pos;
|
||||
};
|
||||
|
||||
int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size);
|
||||
|
||||
int usbtv_video_init(struct usbtv *usbtv);
|
||||
void usbtv_video_free(struct usbtv *usbtv);
|
||||
|
||||
int usbtv_audio_init(struct usbtv *usbtv);
|
||||
void usbtv_audio_free(struct usbtv *usbtv);
|
||||
void usbtv_audio_suspend(struct usbtv *usbtv);
|
||||
void usbtv_audio_resume(struct usbtv *usbtv);
|
||||
Loading…
Add table
Add a link
Reference in a new issue