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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

瀏覽代碼 
Pull media updates from Mauro Carvalho Chehab:
 "The first part of the media updates for Kernel 3.7.

  This series contain:

   - A major tree renaming patch series: now, drivers are organized
     internally by their used bus, instead of by V4L2 and/or DVB API,
     providing a cleaner driver location for hybrid drivers that
     implement both APIs, and allowing to cleanup the Kconfig items and
     make them more intuitive for the end user;

   - Media Kernel developers are typically very lazy with their duties
     of keeping the MAINTAINERS entries for their drivers updated.  As
     now the tree is more organized, we're doing an effort to add/update
     those entries for the drivers that aren't currently orphan;

   - Several DVB USB drivers got moved to a new DVB USB v2 core; the new
     core fixes several bugs (as the existing one that got bitroted).
     Now, suspend/resume finally started to work fine (at least with
     some devices - we should expect more work with regards to it);

   - added multistream support for DVB-T2, and unified the API for
     DVB-S2 and ISDB-S.  Backward binary support is preserved;

   - as usual, a few new drivers, some V4L2 core improvements and lots
     of drivers improvements and fixes.

  There are some points to notice on this series:

   1) you should expect a trivial merge conflict on your tree, with the
      removal of Documentation/feature-removal-schedule.txt: this series
      would be adding two additional entries there.  I opted to not
      rebase it due to this recent change;

   2) With regards to the PCTV 520e udev-related breakage, I opted to
      fix it in a way that the patches can be backported to 3.5 even
      without your firmware fix patch.  This way, Greg doesn't need to
      rush backporting your patch (as there are still the firmware cache
      and firmware path customization issues to be addressed there).

      I'll send later a patch (likely after the end of the merge window)
      reverting the rest of the DRX-K async firmware request, fully
      restoring its original behaviour to allow media drivers to
      initialize everything serialized as before for 3.7 and upper.

   3) I'm planning to work on this weekend to test the DMABUF patches
      for V4L2.  The patches are on my queue for several Kernel cycles,
      but, up to now, there is/was no way to test the series locally.

      I have some concerns about this particular changeset with regards
      to security issues, and with regards to the replacement of the old
      VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
      GPU drivers change.  The Overlay API allows direct PCI2PCI
      transfers from a media capture card into the GPU framebuffer, but
      its API is crappy.  Also, the only existing X11 driver that
      implements it requires a XV extension that is not available
      anymore on modern drivers.  The DMABUF can do the same thing, but
      with it is promising to be a properly-designed API.  If I can
      successfully test this series and be happy with it, I should be
      asking you to pull them next week."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
  em28xx: regression fix: use DRX-K sync firmware requests on em28xx
  drxk: allow loading firmware synchrousnously
  em28xx: Make all em28xx extensions to be initialized asynchronously
  [media] tda18271: properly report read errors in tda18271_get_id
  [media] tda18271: delay IR & RF calibration until init() if delay_cal is set
  [media] MAINTAINERS: add Michael Krufky as tda827x maintainer
  [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
  [media] MAINTAINERS: add Michael Krufky as cxusb maintainer
  [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
  [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
  [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
  [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
  [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
  [media] exynos-gsc: Add missing static storage class specifiers
  [media] exynos-gsc: Remove <linux/version.h> header file inclusion
  [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
  [media] s5p-tv: Fix potential NULL pointer dereference error
  [media] s5k6aa: Fix possible NULL pointer dereference
  ...
此提交包含在：
Linus Torvalds
2012-10-07 17:49:05 +09:00
父節點 7f60ba388f bd0d104988
當前提交 0b8e74c6f4
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58
drivers/media/usb/em28xx/Kconfig 一般檔案
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@@ -0,0 +1,58 @@
config VIDEO_EM28XX
tristate "Empia EM28xx USB video capture support"
depends on VIDEO_DEV && I2C
select VIDEO_TUNER
select VIDEO_TVEEPROM
select VIDEOBUF_VMALLOC
select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_TVP5150 if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_MSP3400 if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_MT9V011 if MEDIA_SUBDRV_AUTOSELECT
---help---
This is a video4linux driver for Empia 28xx based TV cards.
To compile this driver as a module, choose M here: the
module will be called em28xx
config VIDEO_EM28XX_ALSA
depends on VIDEO_EM28XX && SND
select SND_PCM
tristate "Empia EM28xx ALSA audio module"
---help---
This is an ALSA driver for some Empia 28xx based TV cards.
This is not required for em2800/em2820/em2821 boards. However,
newer em28xx devices uses Vendor Class for audio, instead of
implementing the USB Audio Class. For those chips, this module
will enable digital audio.
To compile this driver as a module, choose M here: the
module will be called em28xx-alsa
config VIDEO_EM28XX_DVB
tristate "DVB/ATSC Support for em28xx based TV cards"
depends on VIDEO_EM28XX && DVB_CORE
select DVB_LGDT330X if MEDIA_SUBDRV_AUTOSELECT
select DVB_ZL10353 if MEDIA_SUBDRV_AUTOSELECT
select DVB_TDA10023 if MEDIA_SUBDRV_AUTOSELECT
select DVB_S921 if MEDIA_SUBDRV_AUTOSELECT
select DVB_DRXD if MEDIA_SUBDRV_AUTOSELECT
select DVB_CXD2820R if MEDIA_SUBDRV_AUTOSELECT
select DVB_DRXK if MEDIA_SUBDRV_AUTOSELECT
select DVB_TDA18271C2DD if MEDIA_SUBDRV_AUTOSELECT
select DVB_TDA10071 if MEDIA_SUBDRV_AUTOSELECT
select DVB_A8293 if MEDIA_SUBDRV_AUTOSELECT
select VIDEOBUF_DVB
---help---
This adds support for DVB cards based on the
Empiatech em28xx chips.
config VIDEO_EM28XX_RC
tristate "EM28XX Remote Controller support"
depends on RC_CORE
depends on VIDEO_EM28XX
depends on !(RC_CORE=m && VIDEO_EM28XX=y)
default VIDEO_EM28XX
---help---
Enables Remote Controller support on em28xx driver.

15
drivers/media/usb/em28xx/Makefile 一般檔案
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@@ -0,0 +1,15 @@
em28xx-y += em28xx-video.o em28xx-i2c.o em28xx-cards.o
em28xx-y += em28xx-core.o em28xx-vbi.o
em28xx-alsa-objs := em28xx-audio.o
em28xx-rc-objs := em28xx-input.o
obj-$(CONFIG_VIDEO_EM28XX) += em28xx.o
obj-$(CONFIG_VIDEO_EM28XX_ALSA) += em28xx-alsa.o
obj-$(CONFIG_VIDEO_EM28XX_DVB) += em28xx-dvb.o
obj-$(CONFIG_VIDEO_EM28XX_RC) += em28xx-rc.o
ccflags-y += -Idrivers/media/i2c
ccflags-y += -Idrivers/media/tuners
ccflags-y += -Idrivers/media/dvb-core
ccflags-y += -Idrivers/media/dvb-frontends

751
drivers/media/usb/em28xx/em28xx-audio.c 一般檔案
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@@ -0,0 +1,751 @@
/*
* Empiatech em28x1 audio extension
*
* Copyright (C) 2006 Markus Rechberger <mrechberger@gmail.com>
*
* Copyright (C) 2007-2011 Mauro Carvalho Chehab <mchehab@redhat.com>
* - Port to work with the in-kernel driver
* - Cleanups, fixes, alsa-controls, etc.
*
* This driver is based on my previous au600 usb pstn audio driver
* and inherits all the copyrights
*
* 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 <sound/tlv.h>
#include <sound/ac97_codec.h>
#include <media/v4l2-common.h>
#include "em28xx.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 "em28xx-audio %s: " fmt, \
__func__, ##arg); \
} while (0)
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static int em28xx_deinit_isoc_audio(struct em28xx *dev)
{
int i;
dprintk("Stopping isoc\n");
for (i = 0; i < EM28XX_AUDIO_BUFS; 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 em28xx_audio_isocirq(struct urb *urb)
{
struct em28xx *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;
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 =
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) {
em28xx_errdev("resubmit of audio urb failed (error=%i)\n",
status);
}
return;
}
static int em28xx_init_audio_isoc(struct em28xx *dev)
{
int i, errCode;
const int sb_size = EM28XX_NUM_AUDIO_PACKETS *
EM28XX_AUDIO_MAX_PACKET_SIZE;
dprintk("Starting isoc transfers\n");
for (i = 0; i < EM28XX_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(EM28XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
if (!urb) {
em28xx_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, EM28XX_EP_AUDIO);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = dev->adev.transfer_buffer[i];
urb->interval = 1;
urb->complete = em28xx_audio_isocirq;
urb->number_of_packets = EM28XX_NUM_AUDIO_PACKETS;
urb->transfer_buffer_length = sb_size;
for (j = k = 0; j < EM28XX_NUM_AUDIO_PACKETS;
j++, k += EM28XX_AUDIO_MAX_PACKET_SIZE) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length =
EM28XX_AUDIO_MAX_PACKET_SIZE;
}
dev->adev.urb[i] = urb;
}
for (i = 0; i < EM28XX_AUDIO_BUFS; i++) {
errCode = usb_submit_urb(dev->adev.urb[i], GFP_ATOMIC);
if (errCode) {
em28xx_errdev("submit of audio urb failed\n");
em28xx_deinit_isoc_audio(dev);
atomic_set(&dev->stream_started, 0);
return errCode;
}
}
return 0;
}
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_em28xx_hw_capture = {
.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BATCH |
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_em28xx_capture_open(struct snd_pcm_substream *substream)
{
struct em28xx *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) {
em28xx_err("BUG: em28xx can't find device struct."
" Can't proceed with open\n");
return -ENODEV;
}
runtime->hw = snd_em28xx_hw_capture;
if ((dev->alt == 0 || dev->audio_ifnum) && dev->adev.users == 0) {
if (dev->audio_ifnum)
dev->alt = 1;
else
dev->alt = 7;
dprintk("changing alternate number on interface %d to %d\n",
dev->audio_ifnum, dev->alt);
usb_set_interface(dev->udev, dev->audio_ifnum, dev->alt);
/* Sets volume, mute, etc */
dev->mute = 0;
mutex_lock(&dev->lock);
ret = em28xx_audio_analog_set(dev);
if (ret < 0)
goto err;
dev->adev.users++;
mutex_unlock(&dev->lock);
}
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
dev->adev.capture_pcm_substream = substream;
return 0;
err:
mutex_unlock(&dev->lock);
em28xx_err("Error while configuring em28xx mixer\n");
return ret;
}
static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream)
{
struct em28xx *dev = snd_pcm_substream_chip(substream);
dprintk("closing device\n");
dev->mute = 1;
mutex_lock(&dev->lock);
dev->adev.users--;
if (atomic_read(&dev->stream_started) > 0) {
atomic_set(&dev->stream_started, 0);
schedule_work(&dev->wq_trigger);
}
em28xx_audio_analog_set(dev);
if (substream->runtime->dma_area) {
dprintk("freeing\n");
vfree(substream->runtime->dma_area);
substream->runtime->dma_area = NULL;
}
mutex_unlock(&dev->lock);
return 0;
}
static int snd_em28xx_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 (ret < 0)
return ret;
#if 0
/* TODO: set up em28xx 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 0;
}
static int snd_em28xx_hw_capture_free(struct snd_pcm_substream *substream)
{
struct em28xx *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_em28xx_prepare(struct snd_pcm_substream *substream)
{
struct em28xx *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 em28xx *dev = container_of(work, struct em28xx, wq_trigger);
if (atomic_read(&dev->stream_started)) {
dprintk("starting capture");
em28xx_init_audio_isoc(dev);
} else {
dprintk("stopping capture");
em28xx_deinit_isoc_audio(dev);
}
}
static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct em28xx *dev = snd_pcm_substream_chip(substream);
int retval = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
case SNDRV_PCM_TRIGGER_START:
atomic_set(&dev->stream_started, 1);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
case SNDRV_PCM_TRIGGER_STOP:
atomic_set(&dev->stream_started, 0);
break;
default:
retval = -EINVAL;
}
schedule_work(&dev->wq_trigger);
return retval;
}
static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream
*substream)
{
unsigned long flags;
struct em28xx *dev;
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);
}
/*
* AC97 volume control support
*/
static int em28xx_vol_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *info)
{
info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
info->count = 2;
info->value.integer.min = 0;
info->value.integer.max = 0x1f;
return 0;
}
static int em28xx_vol_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *value)
{
struct em28xx *dev = snd_kcontrol_chip(kcontrol);
u16 val = (0x1f - (value->value.integer.value[0] & 0x1f)) |
(0x1f - (value->value.integer.value[1] & 0x1f)) << 8;
int rc;
mutex_lock(&dev->lock);
rc = em28xx_read_ac97(dev, kcontrol->private_value);
if (rc < 0)
goto err;
val |= rc & 0x8000; /* Preserve the mute flag */
rc = em28xx_write_ac97(dev, kcontrol->private_value, val);
if (rc < 0)
goto err;
dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
err:
mutex_unlock(&dev->lock);
return rc;
}
static int em28xx_vol_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *value)
{
struct em28xx *dev = snd_kcontrol_chip(kcontrol);
int val;
mutex_lock(&dev->lock);
val = em28xx_read_ac97(dev, kcontrol->private_value);
mutex_unlock(&dev->lock);
if (val < 0)
return val;
dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
value->value.integer.value[0] = 0x1f - (val & 0x1f);
value->value.integer.value[1] = 0x1f - ((val << 8) & 0x1f);
return 0;
}
static int em28xx_vol_put_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *value)
{
struct em28xx *dev = snd_kcontrol_chip(kcontrol);
u16 val = value->value.integer.value[0];
int rc;
mutex_lock(&dev->lock);
rc = em28xx_read_ac97(dev, kcontrol->private_value);
if (rc < 0)
goto err;
if (val)
rc &= 0x1f1f;
else
rc |= 0x8000;
rc = em28xx_write_ac97(dev, kcontrol->private_value, rc);
if (rc < 0)
goto err;
dprintk("%sleft vol %d, right vol %d (0x%04x) to ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
err:
mutex_unlock(&dev->lock);
return rc;
}
static int em28xx_vol_get_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *value)
{
struct em28xx *dev = snd_kcontrol_chip(kcontrol);
int val;
mutex_lock(&dev->lock);
val = em28xx_read_ac97(dev, kcontrol->private_value);
mutex_unlock(&dev->lock);
if (val < 0)
return val;
if (val & 0x8000)
value->value.integer.value[0] = 0;
else
value->value.integer.value[0] = 1;
dprintk("%sleft vol %d, right vol %d (0x%04x) from ac97 volume control 0x%04x\n",
(val & 0x8000) ? "muted " : "",
0x1f - ((val >> 8) & 0x1f), 0x1f - (val & 0x1f),
val, (int)kcontrol->private_value);
return 0;
}
static const DECLARE_TLV_DB_SCALE(em28xx_db_scale, -3450, 150, 0);
static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev,
char *name, int id)
{
int err;
char ctl_name[44];
struct snd_kcontrol *kctl;
struct snd_kcontrol_new tmp;
memset (&tmp, 0, sizeof(tmp));
tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
tmp.private_value = id,
tmp.name = ctl_name,
/* Add Mute Control */
sprintf(ctl_name, "%s Switch", name);
tmp.get = em28xx_vol_get_mute;
tmp.put = em28xx_vol_put_mute;
tmp.info = snd_ctl_boolean_mono_info;
kctl = snd_ctl_new1(&tmp, dev);
err = snd_ctl_add(card, kctl);
if (err < 0)
return err;
dprintk("Added control %s for ac97 volume control 0x%04x\n",
ctl_name, id);
memset (&tmp, 0, sizeof(tmp));
tmp.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
tmp.private_value = id,
tmp.name = ctl_name,
/* Add Volume Control */
sprintf(ctl_name, "%s Volume", name);
tmp.get = em28xx_vol_get;
tmp.put = em28xx_vol_put;
tmp.info = em28xx_vol_info;
tmp.tlv.p = em28xx_db_scale,
kctl = snd_ctl_new1(&tmp, dev);
err = snd_ctl_add(card, kctl);
if (err < 0)
return err;
dprintk("Added control %s for ac97 volume control 0x%04x\n",
ctl_name, id);
return 0;
}
/*
* register/unregister code and data
*/
static struct snd_pcm_ops snd_em28xx_pcm_capture = {
.open = snd_em28xx_capture_open,
.close = snd_em28xx_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_em28xx_hw_capture_params,
.hw_free = snd_em28xx_hw_capture_free,
.prepare = snd_em28xx_prepare,
.trigger = snd_em28xx_capture_trigger,
.pointer = snd_em28xx_capture_pointer,
.page = snd_pcm_get_vmalloc_page,
};
static int em28xx_audio_init(struct em28xx *dev)
{
struct em28xx_audio *adev = &dev->adev;
struct snd_pcm *pcm;
struct snd_card *card;
static int devnr;
int err;
if (!dev->has_alsa_audio || dev->audio_ifnum < 0) {
/* 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;
}
printk(KERN_INFO "em28xx-audio.c: probing for em28xx Audio Vendor Class\n");
printk(KERN_INFO "em28xx-audio.c: Copyright (C) 2006 Markus "
"Rechberger\n");
printk(KERN_INFO "em28xx-audio.c: Copyright (C) 2007-2011 Mauro Carvalho Chehab\n");
err = snd_card_create(index[devnr], "Em28xx Audio", THIS_MODULE, 0,
&card);
if (err < 0)
return err;
spin_lock_init(&adev->slock);
err = snd_pcm_new(card, "Em28xx Audio", 0, 0, 1, &pcm);
if (err < 0) {
snd_card_free(card);
return err;
}
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_em28xx_pcm_capture);
pcm->info_flags = 0;
pcm->private_data = dev;
strcpy(pcm->name, "Empia 28xx Capture");
snd_card_set_dev(card, &dev->udev->dev);
strcpy(card->driver, "Em28xx-Audio");
strcpy(card->shortname, "Em28xx Audio");
strcpy(card->longname, "Empia Em28xx Audio");
INIT_WORK(&dev->wq_trigger, audio_trigger);
if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
em28xx_cvol_new(card, dev, "Video", AC97_VIDEO);
em28xx_cvol_new(card, dev, "Line In", AC97_LINE);
em28xx_cvol_new(card, dev, "Phone", AC97_PHONE);
em28xx_cvol_new(card, dev, "Microphone", AC97_MIC);
em28xx_cvol_new(card, dev, "CD", AC97_CD);
em28xx_cvol_new(card, dev, "AUX", AC97_AUX);
em28xx_cvol_new(card, dev, "PCM", AC97_PCM);
em28xx_cvol_new(card, dev, "Master", AC97_MASTER);
em28xx_cvol_new(card, dev, "Line", AC97_HEADPHONE);
em28xx_cvol_new(card, dev, "Mono", AC97_MASTER_MONO);
em28xx_cvol_new(card, dev, "LFE", AC97_CENTER_LFE_MASTER);
em28xx_cvol_new(card, dev, "Surround", AC97_SURROUND_MASTER);
}
err = snd_card_register(card);
if (err < 0) {
snd_card_free(card);
return err;
}
adev->sndcard = card;
adev->udev = dev->udev;
return 0;
}
static int em28xx_audio_fini(struct em28xx *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);
dev->adev.sndcard = NULL;
}
return 0;
}
static struct em28xx_ops audio_ops = {
.id = EM28XX_AUDIO,
.name = "Em28xx Audio Extension",
.init = em28xx_audio_init,
.fini = em28xx_audio_fini,
};
static int __init em28xx_alsa_register(void)
{
return em28xx_register_extension(&audio_ops);
}
static void __exit em28xx_alsa_unregister(void)
{
em28xx_unregister_extension(&audio_ops);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Markus Rechberger <mrechberger@gmail.com>");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
MODULE_DESCRIPTION("Em28xx Audio driver");
module_init(em28xx_alsa_register);
module_exit(em28xx_alsa_unregister);

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drivers/media/usb/em28xx/em28xx-cards.c 一般檔案
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drivers/media/usb/em28xx/em28xx-core.c 一般檔案
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568
drivers/media/usb/em28xx/em28xx-i2c.c 一般檔案
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@@ -0,0 +1,568 @@
/*
em28xx-i2c.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
Markus Rechberger <mrechberger@gmail.com>
Mauro Carvalho Chehab <mchehab@infradead.org>
Sascha Sommer <saschasommer@freenet.de>
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/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include "em28xx.h"
#include "tuner-xc2028.h"
#include <media/v4l2-common.h>
#include <media/tuner.h>
/* ----------------------------------------------------------- */
static unsigned int i2c_scan;
module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
static unsigned int i2c_debug;
module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
#define dprintk2(lvl, fmt, args...) \
do { \
if (i2c_debug >= lvl) { \
printk(KERN_DEBUG "%s at %s: " fmt, \
dev->name, __func__ , ##args); \
} \
} while (0)
/*
* em2800_i2c_send_max4()
* send up to 4 bytes to the i2c device
*/
static int em2800_i2c_send_max4(struct em28xx *dev, unsigned char addr,
char *buf, int len)
{
int ret;
int write_timeout;
unsigned char b2[6];
BUG_ON(len < 1 || len > 4);
b2[5] = 0x80 + len - 1;
b2[4] = addr;
b2[3] = buf[0];
if (len > 1)
b2[2] = buf[1];
if (len > 2)
b2[1] = buf[2];
if (len > 3)
b2[0] = buf[3];
ret = dev->em28xx_write_regs(dev, 4 - len, &b2[4 - len], 2 + len);
if (ret != 2 + len) {
em28xx_warn("writing to i2c device failed (error=%i)\n", ret);
return -EIO;
}
for (write_timeout = EM2800_I2C_WRITE_TIMEOUT; write_timeout > 0;
write_timeout -= 5) {
ret = dev->em28xx_read_reg(dev, 0x05);
if (ret == 0x80 + len - 1)
return len;
msleep(5);
}
em28xx_warn("i2c write timed out\n");
return -EIO;
}
/*
* em2800_i2c_send_bytes()
*/
static int em2800_i2c_send_bytes(void *data, unsigned char addr, char *buf,
short len)
{
char *bufPtr = buf;
int ret;
int wrcount = 0;
int count;
int maxLen = 4;
struct em28xx *dev = (struct em28xx *)data;
while (len > 0) {
count = (len > maxLen) ? maxLen : len;
ret = em2800_i2c_send_max4(dev, addr, bufPtr, count);
if (ret > 0) {
len -= count;
bufPtr += count;
wrcount += count;
} else
return (ret < 0) ? ret : -EFAULT;
}
return wrcount;
}
/*
* em2800_i2c_check_for_device()
* check if there is a i2c_device at the supplied address
*/
static int em2800_i2c_check_for_device(struct em28xx *dev, unsigned char addr)
{
char msg;
int ret;
int write_timeout;
msg = addr;
ret = dev->em28xx_write_regs(dev, 0x04, &msg, 1);
if (ret < 0) {
em28xx_warn("setting i2c device address failed (error=%i)\n",
ret);
return ret;
}
msg = 0x84;
ret = dev->em28xx_write_regs(dev, 0x05, &msg, 1);
if (ret < 0) {
em28xx_warn("preparing i2c read failed (error=%i)\n", ret);
return ret;
}
for (write_timeout = EM2800_I2C_WRITE_TIMEOUT; write_timeout > 0;
write_timeout -= 5) {
unsigned reg = dev->em28xx_read_reg(dev, 0x5);
if (reg == 0x94)
return -ENODEV;
else if (reg == 0x84)
return 0;
msleep(5);
}
return -ENODEV;
}
/*
* em2800_i2c_recv_bytes()
* read from the i2c device
*/
static int em2800_i2c_recv_bytes(struct em28xx *dev, unsigned char addr,
char *buf, int len)
{
int ret;
/* check for the device and set i2c read address */
ret = em2800_i2c_check_for_device(dev, addr);
if (ret) {
em28xx_warn
("preparing read at i2c address 0x%x failed (error=%i)\n",
addr, ret);
return ret;
}
ret = dev->em28xx_read_reg_req_len(dev, 0x0, 0x3, buf, len);
if (ret < 0) {
em28xx_warn("reading from i2c device at 0x%x failed (error=%i)",
addr, ret);
return ret;
}
return ret;
}
/*
* em28xx_i2c_send_bytes()
*/
static int em28xx_i2c_send_bytes(void *data, unsigned char addr, char *buf,
short len, int stop)
{
int wrcount = 0;
struct em28xx *dev = (struct em28xx *)data;
int write_timeout, ret;
wrcount = dev->em28xx_write_regs_req(dev, stop ? 2 : 3, addr, buf, len);
/* Seems to be required after a write */
for (write_timeout = EM2800_I2C_WRITE_TIMEOUT; write_timeout > 0;
write_timeout -= 5) {
ret = dev->em28xx_read_reg(dev, 0x05);
if (!ret)
break;
msleep(5);
}
return wrcount;
}
/*
* em28xx_i2c_recv_bytes()
* read a byte from the i2c device
*/
static int em28xx_i2c_recv_bytes(struct em28xx *dev, unsigned char addr,
char *buf, int len)
{
int ret;
ret = dev->em28xx_read_reg_req_len(dev, 2, addr, buf, len);
if (ret < 0) {
em28xx_warn("reading i2c device failed (error=%i)\n", ret);
return ret;
}
if (dev->em28xx_read_reg(dev, 0x5) != 0)
return -ENODEV;
return ret;
}
/*
* em28xx_i2c_check_for_device()
* check if there is a i2c_device at the supplied address
*/
static int em28xx_i2c_check_for_device(struct em28xx *dev, unsigned char addr)
{
int ret;
ret = dev->em28xx_read_reg_req(dev, 2, addr);
if (ret < 0) {
em28xx_warn("reading from i2c device failed (error=%i)\n", ret);
return ret;
}
if (dev->em28xx_read_reg(dev, 0x5) != 0)
return -ENODEV;
return 0;
}
/*
* em28xx_i2c_xfer()
* the main i2c transfer function
*/
static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
struct i2c_msg msgs[], int num)
{
struct em28xx *dev = i2c_adap->algo_data;
int addr, rc, i, byte;
if (num <= 0)
return 0;
for (i = 0; i < num; i++) {
addr = msgs[i].addr << 1;
dprintk2(2, "%s %s addr=%x len=%d:",
(msgs[i].flags & I2C_M_RD) ? "read" : "write",
i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
if (!msgs[i].len) { /* no len: check only for device presence */
if (dev->board.is_em2800)
rc = em2800_i2c_check_for_device(dev, addr);
else
rc = em28xx_i2c_check_for_device(dev, addr);
if (rc < 0) {
dprintk2(2, " no device\n");
return rc;
}
} else if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
if (dev->board.is_em2800)
rc = em2800_i2c_recv_bytes(dev, addr,
msgs[i].buf,
msgs[i].len);
else
rc = em28xx_i2c_recv_bytes(dev, addr,
msgs[i].buf,
msgs[i].len);
if (i2c_debug >= 2) {
for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
}
} else {
/* write bytes */
if (i2c_debug >= 2) {
for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
}
if (dev->board.is_em2800)
rc = em2800_i2c_send_bytes(dev, addr,
msgs[i].buf,
msgs[i].len);
else
rc = em28xx_i2c_send_bytes(dev, addr,
msgs[i].buf,
msgs[i].len,
i == num - 1);
}
if (rc < 0)
goto err;
if (i2c_debug >= 2)
printk("\n");
}
return num;
err:
dprintk2(2, " ERROR: %i\n", rc);
return rc;
}
/* based on linux/sunrpc/svcauth.h and linux/hash.h
* The original hash function returns a different value, if arch is x86_64
* or i386.
*/
static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
{
unsigned long hash = 0;
unsigned long l = 0;
int len = 0;
unsigned char c;
do {
if (len == length) {
c = (char)len;
len = -1;
} else
c = *buf++;
l = (l << 8) | c;
len++;
if ((len & (32 / 8 - 1)) == 0)
hash = ((hash^l) * 0x9e370001UL);
} while (len);
return (hash >> (32 - bits)) & 0xffffffffUL;
}
static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
{
unsigned char buf, *p = eedata;
struct em28xx_eeprom *em_eeprom = (void *)eedata;
int i, err, size = len, block;
if (dev->chip_id == CHIP_ID_EM2874 ||
dev->chip_id == CHIP_ID_EM28174 ||
dev->chip_id == CHIP_ID_EM2884) {
/* Empia switched to a 16-bit addressable eeprom in newer
devices. While we could certainly write a routine to read
the eeprom, there is nothing of use in there that cannot be
accessed through registers, and there is the risk that we
could corrupt the eeprom (since a 16-bit read call is
interpreted as a write call by 8-bit eeproms).
*/
return 0;
}
dev->i2c_client.addr = 0xa0 >> 1;
/* Check if board has eeprom */
err = i2c_master_recv(&dev->i2c_client, &buf, 0);
if (err < 0) {
em28xx_errdev("board has no eeprom\n");
memset(eedata, 0, len);
return -ENODEV;
}
buf = 0;
err = i2c_master_send(&dev->i2c_client, &buf, 1);
if (err != 1) {
printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
dev->name, err);
return err;
}
while (size > 0) {
if (size > 16)
block = 16;
else
block = size;
if (block !=
(err = i2c_master_recv(&dev->i2c_client, p, block))) {
printk(KERN_WARNING
"%s: i2c eeprom read error (err=%d)\n",
dev->name, err);
return err;
}
size -= block;
p += block;
}
for (i = 0; i < len; i++) {
if (0 == (i % 16))
printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i);
printk(" %02x", eedata[i]);
if (15 == (i % 16))
printk("\n");
}
if (em_eeprom->id == 0x9567eb1a)
dev->hash = em28xx_hash_mem(eedata, len, 32);
printk(KERN_INFO "%s: EEPROM ID= 0x%08x, EEPROM hash = 0x%08lx\n",
dev->name, em_eeprom->id, dev->hash);
printk(KERN_INFO "%s: EEPROM info:\n", dev->name);
switch (em_eeprom->chip_conf >> 4 & 0x3) {
case 0:
printk(KERN_INFO "%s:\tNo audio on board.\n", dev->name);
break;
case 1:
printk(KERN_INFO "%s:\tAC97 audio (5 sample rates)\n",
dev->name);
break;
case 2:
printk(KERN_INFO "%s:\tI2S audio, sample rate=32k\n",
dev->name);
break;
case 3:
printk(KERN_INFO "%s:\tI2S audio, 3 sample rates\n",
dev->name);
break;
}
if (em_eeprom->chip_conf & 1 << 3)
printk(KERN_INFO "%s:\tUSB Remote wakeup capable\n", dev->name);
if (em_eeprom->chip_conf & 1 << 2)
printk(KERN_INFO "%s:\tUSB Self power capable\n", dev->name);
switch (em_eeprom->chip_conf & 0x3) {
case 0:
printk(KERN_INFO "%s:\t500mA max power\n", dev->name);
break;
case 1:
printk(KERN_INFO "%s:\t400mA max power\n", dev->name);
break;
case 2:
printk(KERN_INFO "%s:\t300mA max power\n", dev->name);
break;
case 3:
printk(KERN_INFO "%s:\t200mA max power\n", dev->name);
break;
}
printk(KERN_INFO "%s:\tTable at 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n",
dev->name,
em_eeprom->string_idx_table,
em_eeprom->string1,
em_eeprom->string2,
em_eeprom->string3);
return 0;
}
/* ----------------------------------------------------------- */
/*
* functionality()
*/
static u32 functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_SMBUS_EMUL;
}
static struct i2c_algorithm em28xx_algo = {
.master_xfer = em28xx_i2c_xfer,
.functionality = functionality,
};
static struct i2c_adapter em28xx_adap_template = {
.owner = THIS_MODULE,
.name = "em28xx",
.algo = &em28xx_algo,
};
static struct i2c_client em28xx_client_template = {
.name = "em28xx internal",
};
/* ----------------------------------------------------------- */
/*
* i2c_devs
* incomplete list of known devices
*/
static char *i2c_devs[128] = {
[0x4a >> 1] = "saa7113h",
[0x52 >> 1] = "drxk",
[0x60 >> 1] = "remote IR sensor",
[0x8e >> 1] = "remote IR sensor",
[0x86 >> 1] = "tda9887",
[0x80 >> 1] = "msp34xx",
[0x88 >> 1] = "msp34xx",
[0xa0 >> 1] = "eeprom",
[0xb0 >> 1] = "tda9874",
[0xb8 >> 1] = "tvp5150a",
[0xba >> 1] = "webcam sensor or tvp5150a",
[0xc0 >> 1] = "tuner (analog)",
[0xc2 >> 1] = "tuner (analog)",
[0xc4 >> 1] = "tuner (analog)",
[0xc6 >> 1] = "tuner (analog)",
};
/*
* do_i2c_scan()
* check i2c address range for devices
*/
void em28xx_do_i2c_scan(struct em28xx *dev)
{
u8 i2c_devicelist[128];
unsigned char buf;
int i, rc;
memset(i2c_devicelist, 0, ARRAY_SIZE(i2c_devicelist));
for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) {
dev->i2c_client.addr = i;
rc = i2c_master_recv(&dev->i2c_client, &buf, 0);
if (rc < 0)
continue;
i2c_devicelist[i] = i;
printk(KERN_INFO "%s: found i2c device @ 0x%x [%s]\n",
dev->name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
dev->i2c_hash = em28xx_hash_mem(i2c_devicelist,
ARRAY_SIZE(i2c_devicelist), 32);
}
/*
* em28xx_i2c_register()
* register i2c bus
*/
int em28xx_i2c_register(struct em28xx *dev)
{
int retval;
BUG_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg);
BUG_ON(!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req);
dev->i2c_adap = em28xx_adap_template;
dev->i2c_adap.dev.parent = &dev->udev->dev;
strcpy(dev->i2c_adap.name, dev->name);
dev->i2c_adap.algo_data = dev;
i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
retval = i2c_add_adapter(&dev->i2c_adap);
if (retval < 0) {
em28xx_errdev("%s: i2c_add_adapter failed! retval [%d]\n",
__func__, retval);
return retval;
}
dev->i2c_client = em28xx_client_template;
dev->i2c_client.adapter = &dev->i2c_adap;
retval = em28xx_i2c_eeprom(dev, dev->eedata, sizeof(dev->eedata));
if ((retval < 0) && (retval != -ENODEV)) {
em28xx_errdev("%s: em28xx_i2_eeprom failed! retval [%d]\n",
__func__, retval);
return retval;
}
if (i2c_scan)
em28xx_do_i2c_scan(dev);
return 0;
}
/*
* em28xx_i2c_unregister()
* unregister i2c_bus
*/
int em28xx_i2c_unregister(struct em28xx *dev)
{
i2c_del_adapter(&dev->i2c_adap);
return 0;
}

645
drivers/media/usb/em28xx/em28xx-input.c 一般檔案
查看文件

@@ -0,0 +1,645 @@
/*
handle em28xx IR remotes via linux kernel input layer.
Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
Markus Rechberger <mrechberger@gmail.com>
Mauro Carvalho Chehab <mchehab@infradead.org>
Sascha Sommer <saschasommer@freenet.de>
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/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/usb.h>
#include <linux/slab.h>
#include "em28xx.h"
#define EM28XX_SNAPSHOT_KEY KEY_CAMERA
#define EM28XX_SBUTTON_QUERY_INTERVAL 500
#define EM28XX_R0C_USBSUSP_SNAPSHOT 0x20
static unsigned int ir_debug;
module_param(ir_debug, int, 0644);
MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
#define MODULE_NAME "em28xx"
#define i2cdprintk(fmt, arg...) \
if (ir_debug) { \
printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
}
#define dprintk(fmt, arg...) \
if (ir_debug) { \
printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
}
/**********************************************************
Polling structure used by em28xx IR's
**********************************************************/
struct em28xx_ir_poll_result {
unsigned int toggle_bit:1;
unsigned int read_count:7;
u8 rc_address;
u8 rc_data[4]; /* 1 byte on em2860/2880, 4 on em2874 */
};
struct em28xx_IR {
struct em28xx *dev;
struct rc_dev *rc;
char name[32];
char phys[32];
/* poll external decoder */
int polling;
struct delayed_work work;
unsigned int full_code:1;
unsigned int last_readcount;
int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *);
};
/**********************************************************
I2C IR based get keycodes - should be used with ir-kbd-i2c
**********************************************************/
static int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(ir->c, &b, 1)) {
i2cdprintk("read error\n");
return -EIO;
}
/* it seems that 0xFE indicates that a button is still hold
down, while 0xff indicates that no button is hold
down. 0xfe sequences are sometimes interrupted by 0xFF */
i2cdprintk("key %02x\n", b);
if (b == 0xff)
return 0;
if (b == 0xfe)
/* keep old data */
return 1;
*ir_key = b;
*ir_raw = b;
return 1;
}
static int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char buf[2];
u16 code;
int size;
/* poll IR chip */
size = i2c_master_recv(ir->c, buf, sizeof(buf));
if (size != 2)
return -EIO;
/* Does eliminate repeated parity code */
if (buf[1] == 0xff)
return 0;
ir->old = buf[1];
/*
* Rearranges bits to the right order.
* The bit order were determined experimentally by using
* The original Hauppauge Grey IR and another RC5 that uses addr=0x08
* The RC5 code has 14 bits, but we've experimentally determined
* the meaning for only 11 bits.
* So, the code translation is not complete. Yet, it is enough to
* work with the provided RC5 IR.
*/
code =
((buf[0] & 0x01) ? 0x0020 : 0) | /* 0010 0000 */
((buf[0] & 0x02) ? 0x0010 : 0) | /* 0001 0000 */
((buf[0] & 0x04) ? 0x0008 : 0) | /* 0000 1000 */
((buf[0] & 0x08) ? 0x0004 : 0) | /* 0000 0100 */
((buf[0] & 0x10) ? 0x0002 : 0) | /* 0000 0010 */
((buf[0] & 0x20) ? 0x0001 : 0) | /* 0000 0001 */
((buf[1] & 0x08) ? 0x1000 : 0) | /* 0001 0000 */
((buf[1] & 0x10) ? 0x0800 : 0) | /* 0000 1000 */
((buf[1] & 0x20) ? 0x0400 : 0) | /* 0000 0100 */
((buf[1] & 0x40) ? 0x0200 : 0) | /* 0000 0010 */
((buf[1] & 0x80) ? 0x0100 : 0); /* 0000 0001 */
i2cdprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x%02x)\n",
code, buf[1], buf[0]);
/* return key */
*ir_key = code;
*ir_raw = code;
return 1;
}
static int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
u32 *ir_raw)
{
unsigned char buf[3];
/* poll IR chip */
if (3 != i2c_master_recv(ir->c, buf, 3)) {
i2cdprintk("read error\n");
return -EIO;
}
i2cdprintk("key %02x\n", buf[2]&0x3f);
if (buf[0] != 0x00)
return 0;
*ir_key = buf[2]&0x3f;
*ir_raw = buf[2]&0x3f;
return 1;
}
static int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key,
u32 *ir_raw)
{
unsigned char subaddr, keydetect, key;
struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, .buf = &subaddr, .len = 1},
{ .addr = ir->c->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} };
subaddr = 0x10;
if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
i2cdprintk("read error\n");
return -EIO;
}
if (keydetect == 0x00)
return 0;
subaddr = 0x00;
msg[1].buf = &key;
if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
i2cdprintk("read error\n");
return -EIO;
}
if (key == 0x00)
return 0;
*ir_key = key;
*ir_raw = key;
return 1;
}
/**********************************************************
Poll based get keycode functions
**********************************************************/
/* This is for the em2860/em2880 */
static int default_polling_getkey(struct em28xx_IR *ir,
struct em28xx_ir_poll_result *poll_result)
{
struct em28xx *dev = ir->dev;
int rc;
u8 msg[3] = { 0, 0, 0 };
/* Read key toggle, brand, and key code
on registers 0x45, 0x46 and 0x47
*/
rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,
msg, sizeof(msg));
if (rc < 0)
return rc;
/* Infrared toggle (Reg 0x45[7]) */
poll_result->toggle_bit = (msg[0] >> 7);
/* Infrared read count (Reg 0x45[6:0] */
poll_result->read_count = (msg[0] & 0x7f);
/* Remote Control Address (Reg 0x46) */
poll_result->rc_address = msg[1];
/* Remote Control Data (Reg 0x47) */
poll_result->rc_data[0] = msg[2];
return 0;
}
static int em2874_polling_getkey(struct em28xx_IR *ir,
struct em28xx_ir_poll_result *poll_result)
{
struct em28xx *dev = ir->dev;
int rc;
u8 msg[5] = { 0, 0, 0, 0, 0 };
/* Read key toggle, brand, and key code
on registers 0x51-55
*/
rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR,
msg, sizeof(msg));
if (rc < 0)
return rc;
/* Infrared toggle (Reg 0x51[7]) */
poll_result->toggle_bit = (msg[0] >> 7);
/* Infrared read count (Reg 0x51[6:0] */
poll_result->read_count = (msg[0] & 0x7f);
/* Remote Control Address (Reg 0x52) */
poll_result->rc_address = msg[1];
/* Remote Control Data (Reg 0x53-55) */
poll_result->rc_data[0] = msg[2];
poll_result->rc_data[1] = msg[3];
poll_result->rc_data[2] = msg[4];
return 0;
}
/**********************************************************
Polling code for em28xx
**********************************************************/
static void em28xx_ir_handle_key(struct em28xx_IR *ir)
{
int result;
struct em28xx_ir_poll_result poll_result;
/* read the registers containing the IR status */
result = ir->get_key(ir, &poll_result);
if (unlikely(result < 0)) {
dprintk("ir->get_key() failed %d\n", result);
return;
}
if (unlikely(poll_result.read_count != ir->last_readcount)) {
dprintk("%s: toggle: %d, count: %d, key 0x%02x%02x\n", __func__,
poll_result.toggle_bit, poll_result.read_count,
poll_result.rc_address, poll_result.rc_data[0]);
if (ir->full_code)
rc_keydown(ir->rc,
poll_result.rc_address << 8 |
poll_result.rc_data[0],
poll_result.toggle_bit);
else
rc_keydown(ir->rc,
poll_result.rc_data[0],
poll_result.toggle_bit);
if (ir->dev->chip_id == CHIP_ID_EM2874 ||
ir->dev->chip_id == CHIP_ID_EM2884)
/* The em2874 clears the readcount field every time the
register is read. The em2860/2880 datasheet says that it
is supposed to clear the readcount, but it doesn't. So with
the em2874, we are looking for a non-zero read count as
opposed to a readcount that is incrementing */
ir->last_readcount = 0;
else
ir->last_readcount = poll_result.read_count;
}
}
static void em28xx_ir_work(struct work_struct *work)
{
struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work);
em28xx_ir_handle_key(ir);
schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
}
static int em28xx_ir_start(struct rc_dev *rc)
{
struct em28xx_IR *ir = rc->priv;
INIT_DELAYED_WORK(&ir->work, em28xx_ir_work);
schedule_delayed_work(&ir->work, 0);
return 0;
}
static void em28xx_ir_stop(struct rc_dev *rc)
{
struct em28xx_IR *ir = rc->priv;
cancel_delayed_work_sync(&ir->work);
}
static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 rc_type)
{
int rc = 0;
struct em28xx_IR *ir = rc_dev->priv;
struct em28xx *dev = ir->dev;
u8 ir_config = EM2874_IR_RC5;
/* Adjust xclk based o IR table for RC5/NEC tables */
if (rc_type == RC_TYPE_RC5) {
dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
ir->full_code = 1;
} else if (rc_type == RC_TYPE_NEC) {
dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
ir_config = EM2874_IR_NEC;
ir->full_code = 1;
} else if (rc_type != RC_TYPE_UNKNOWN)
rc = -EINVAL;
em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
EM28XX_XCLK_IR_RC5_MODE);
/* Setup the proper handler based on the chip */
switch (dev->chip_id) {
case CHIP_ID_EM2860:
case CHIP_ID_EM2883:
ir->get_key = default_polling_getkey;
break;
case CHIP_ID_EM2884:
case CHIP_ID_EM2874:
case CHIP_ID_EM28174:
ir->get_key = em2874_polling_getkey;
em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1);
break;
default:
printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n",
dev->chip_id);
rc = -EINVAL;
}
return rc;
}
static void em28xx_register_i2c_ir(struct em28xx *dev)
{
/* Leadtek winfast tv USBII deluxe can find a non working IR-device */
/* at address 0x18, so if that address is needed for another board in */
/* the future, please put it after 0x1f. */
struct i2c_board_info info;
const unsigned short addr_list[] = {
0x1f, 0x30, 0x47, I2C_CLIENT_END
};
memset(&info, 0, sizeof(struct i2c_board_info));
memset(&dev->init_data, 0, sizeof(dev->init_data));
strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
/* detect & configure */
switch (dev->model) {
case EM2800_BOARD_TERRATEC_CINERGY_200:
case EM2820_BOARD_TERRATEC_CINERGY_250:
dev->init_data.ir_codes = RC_MAP_EM_TERRATEC;
dev->init_data.get_key = em28xx_get_key_terratec;
dev->init_data.name = "i2c IR (EM28XX Terratec)";
break;
case EM2820_BOARD_PINNACLE_USB_2:
dev->init_data.ir_codes = RC_MAP_PINNACLE_GREY;
dev->init_data.get_key = em28xx_get_key_pinnacle_usb_grey;
dev->init_data.name = "i2c IR (EM28XX Pinnacle PCTV)";
break;
case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
dev->init_data.ir_codes = RC_MAP_HAUPPAUGE;
dev->init_data.get_key = em28xx_get_key_em_haup;
dev->init_data.name = "i2c IR (EM2840 Hauppauge)";
break;
case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE:
dev->init_data.ir_codes = RC_MAP_WINFAST_USBII_DELUXE;
dev->init_data.get_key = em28xx_get_key_winfast_usbii_deluxe;
dev->init_data.name = "i2c IR (EM2820 Winfast TV USBII Deluxe)";
break;
}
if (dev->init_data.name)
info.platform_data = &dev->init_data;
i2c_new_probed_device(&dev->i2c_adap, &info, addr_list, NULL);
}
/**********************************************************
Handle Webcam snapshot button
**********************************************************/
static void em28xx_query_sbutton(struct work_struct *work)
{
/* Poll the register and see if the button is depressed */
struct em28xx *dev =
container_of(work, struct em28xx, sbutton_query_work.work);
int ret;
ret = em28xx_read_reg(dev, EM28XX_R0C_USBSUSP);
if (ret & EM28XX_R0C_USBSUSP_SNAPSHOT) {
u8 cleared;
/* Button is depressed, clear the register */
cleared = ((u8) ret) & ~EM28XX_R0C_USBSUSP_SNAPSHOT;
em28xx_write_regs(dev, EM28XX_R0C_USBSUSP, &cleared, 1);
/* Not emulate the keypress */
input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY,
1);
/* Now unpress the key */
input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY,
0);
}
/* Schedule next poll */
schedule_delayed_work(&dev->sbutton_query_work,
msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL));
}
static void em28xx_register_snapshot_button(struct em28xx *dev)
{
struct input_dev *input_dev;
int err;
em28xx_info("Registering snapshot button...\n");
input_dev = input_allocate_device();
if (!input_dev) {
em28xx_errdev("input_allocate_device failed\n");
return;
}
usb_make_path(dev->udev, dev->snapshot_button_path,
sizeof(dev->snapshot_button_path));
strlcat(dev->snapshot_button_path, "/sbutton",
sizeof(dev->snapshot_button_path));
INIT_DELAYED_WORK(&dev->sbutton_query_work, em28xx_query_sbutton);
input_dev->name = "em28xx snapshot button";
input_dev->phys = dev->snapshot_button_path;
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit);
input_dev->keycodesize = 0;
input_dev->keycodemax = 0;
input_dev->id.bustype = BUS_USB;
input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
input_dev->id.version = 1;
input_dev->dev.parent = &dev->udev->dev;
err = input_register_device(input_dev);
if (err) {
em28xx_errdev("input_register_device failed\n");
input_free_device(input_dev);
return;
}
dev->sbutton_input_dev = input_dev;
schedule_delayed_work(&dev->sbutton_query_work,
msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL));
return;
}
static void em28xx_deregister_snapshot_button(struct em28xx *dev)
{
if (dev->sbutton_input_dev != NULL) {
em28xx_info("Deregistering snapshot button\n");
cancel_delayed_work_sync(&dev->sbutton_query_work);
input_unregister_device(dev->sbutton_input_dev);
dev->sbutton_input_dev = NULL;
}
return;
}
static int em28xx_ir_init(struct em28xx *dev)
{
struct em28xx_IR *ir;
struct rc_dev *rc;
int err = -ENOMEM;
if (dev->board.ir_codes == NULL) {
/* No remote control support */
em28xx_warn("Remote control support is not available for "
"this card.\n");
return 0;
}
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
rc = rc_allocate_device();
if (!ir || !rc)
goto err_out_free;
/* record handles to ourself */
ir->dev = dev;
dev->ir = ir;
ir->rc = rc;
/*
* em2874 supports more protocols. For now, let's just announce
* the two protocols that were already tested
*/
rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC;
rc->priv = ir;
rc->change_protocol = em28xx_ir_change_protocol;
rc->open = em28xx_ir_start;
rc->close = em28xx_ir_stop;
/* By default, keep protocol field untouched */
err = em28xx_ir_change_protocol(rc, RC_TYPE_UNKNOWN);
if (err)
goto err_out_free;
/* This is how often we ask the chip for IR information */
ir->polling = 100; /* ms */
/* init input device */
snprintf(ir->name, sizeof(ir->name), "em28xx IR (%s)",
dev->name);
usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
strlcat(ir->phys, "/input0", sizeof(ir->phys));
rc->input_name = ir->name;
rc->input_phys = ir->phys;
rc->input_id.bustype = BUS_USB;
rc->input_id.version = 1;
rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
rc->dev.parent = &dev->udev->dev;
rc->map_name = dev->board.ir_codes;
rc->driver_name = MODULE_NAME;
/* all done */
err = rc_register_device(rc);
if (err)
goto err_out_stop;
em28xx_register_i2c_ir(dev);
#if defined(CONFIG_MODULES) && defined(MODULE)
if (dev->board.has_ir_i2c)
request_module("ir-kbd-i2c");
#endif
if (dev->board.has_snapshot_button)
em28xx_register_snapshot_button(dev);
return 0;
err_out_stop:
dev->ir = NULL;
err_out_free:
rc_free_device(rc);
kfree(ir);
return err;
}
static int em28xx_ir_fini(struct em28xx *dev)
{
struct em28xx_IR *ir = dev->ir;
em28xx_deregister_snapshot_button(dev);
/* skip detach on non attached boards */
if (!ir)
return 0;
if (ir->rc)
rc_unregister_device(ir->rc);
/* done */
kfree(ir);
dev->ir = NULL;
return 0;
}
static struct em28xx_ops rc_ops = {
.id = EM28XX_RC,
.name = "Em28xx Input Extension",
.init = em28xx_ir_init,
.fini = em28xx_ir_fini,
};
static int __init em28xx_rc_register(void)
{
return em28xx_register_extension(&rc_ops);
}
static void __exit em28xx_rc_unregister(void)
{
em28xx_unregister_extension(&rc_ops);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
MODULE_DESCRIPTION("Em28xx Input driver");
module_init(em28xx_rc_register);
module_exit(em28xx_rc_unregister);

226
drivers/media/usb/em28xx/em28xx-reg.h 一般檔案
查看文件

@@ -0,0 +1,226 @@
#define EM_GPIO_0 (1 << 0)
#define EM_GPIO_1 (1 << 1)
#define EM_GPIO_2 (1 << 2)
#define EM_GPIO_3 (1 << 3)
#define EM_GPIO_4 (1 << 4)
#define EM_GPIO_5 (1 << 5)
#define EM_GPIO_6 (1 << 6)
#define EM_GPIO_7 (1 << 7)
#define EM_GPO_0 (1 << 0)
#define EM_GPO_1 (1 << 1)
#define EM_GPO_2 (1 << 2)
#define EM_GPO_3 (1 << 3)
/* em28xx endpoints */
#define EM28XX_EP_ANALOG 0x82
#define EM28XX_EP_AUDIO 0x83
#define EM28XX_EP_DIGITAL 0x84
/* em2800 registers */
#define EM2800_R08_AUDIOSRC 0x08
/* em28xx registers */
#define EM28XX_R00_CHIPCFG 0x00
/* em28xx Chip Configuration 0x00 */
#define EM28XX_CHIPCFG_VENDOR_AUDIO 0x80
#define EM28XX_CHIPCFG_I2S_VOLUME_CAPABLE 0x40
#define EM28XX_CHIPCFG_I2S_5_SAMPRATES 0x30
#define EM28XX_CHIPCFG_I2S_3_SAMPRATES 0x20
#define EM28XX_CHIPCFG_AC97 0x10
#define EM28XX_CHIPCFG_AUDIOMASK 0x30
#define EM28XX_R01_CHIPCFG2 0x01
/* em28xx Chip Configuration 2 0x01 */
#define EM28XX_CHIPCFG2_TS_PRESENT 0x10
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_MASK 0x0c /* bits 3-2 */
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_1MF 0x00
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_2MF 0x04
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_4MF 0x08
#define EM28XX_CHIPCFG2_TS_REQ_INTERVAL_8MF 0x0c
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_MASK 0x03 /* bits 0-1 */
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_188 0x00
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_376 0x01
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_564 0x02
#define EM28XX_CHIPCFG2_TS_PACKETSIZE_752 0x03
/* GPIO/GPO registers */
#define EM2880_R04_GPO 0x04 /* em2880-em2883 only */
#define EM28XX_R08_GPIO 0x08 /* em2820 or upper */
#define EM28XX_R06_I2C_CLK 0x06
/* em28xx I2C Clock Register (0x06) */
#define EM28XX_I2C_CLK_ACK_LAST_READ 0x80
#define EM28XX_I2C_CLK_WAIT_ENABLE 0x40
#define EM28XX_I2C_EEPROM_ON_BOARD 0x08
#define EM28XX_I2C_EEPROM_KEY_VALID 0x04
#define EM2874_I2C_SECONDARY_BUS_SELECT 0x04 /* em2874 has two i2c busses */
#define EM28XX_I2C_FREQ_1_5_MHZ 0x03 /* bus frequency (bits [1-0]) */
#define EM28XX_I2C_FREQ_25_KHZ 0x02
#define EM28XX_I2C_FREQ_400_KHZ 0x01
#define EM28XX_I2C_FREQ_100_KHZ 0x00
#define EM28XX_R0A_CHIPID 0x0a
#define EM28XX_R0C_USBSUSP 0x0c /* */
#define EM28XX_R0E_AUDIOSRC 0x0e
#define EM28XX_R0F_XCLK 0x0f
/* em28xx XCLK Register (0x0f) */
#define EM28XX_XCLK_AUDIO_UNMUTE 0x80 /* otherwise audio muted */
#define EM28XX_XCLK_I2S_MSB_TIMING 0x40 /* otherwise standard timing */
#define EM28XX_XCLK_IR_RC5_MODE 0x20 /* otherwise NEC mode */
#define EM28XX_XCLK_IR_NEC_CHK_PARITY 0x10
#define EM28XX_XCLK_FREQUENCY_30MHZ 0x00 /* Freq. select (bits [3-0]) */
#define EM28XX_XCLK_FREQUENCY_15MHZ 0x01
#define EM28XX_XCLK_FREQUENCY_10MHZ 0x02
#define EM28XX_XCLK_FREQUENCY_7_5MHZ 0x03
#define EM28XX_XCLK_FREQUENCY_6MHZ 0x04
#define EM28XX_XCLK_FREQUENCY_5MHZ 0x05
#define EM28XX_XCLK_FREQUENCY_4_3MHZ 0x06
#define EM28XX_XCLK_FREQUENCY_12MHZ 0x07
#define EM28XX_XCLK_FREQUENCY_20MHZ 0x08
#define EM28XX_XCLK_FREQUENCY_20MHZ_2 0x09
#define EM28XX_XCLK_FREQUENCY_48MHZ 0x0a
#define EM28XX_XCLK_FREQUENCY_24MHZ 0x0b
#define EM28XX_R10_VINMODE 0x10
#define EM28XX_R11_VINCTRL 0x11
/* em28xx Video Input Control Register 0x11 */
#define EM28XX_VINCTRL_VBI_SLICED 0x80
#define EM28XX_VINCTRL_VBI_RAW 0x40
#define EM28XX_VINCTRL_VOUT_MODE_IN 0x20 /* HREF,VREF,VACT in output */
#define EM28XX_VINCTRL_CCIR656_ENABLE 0x10
#define EM28XX_VINCTRL_VBI_16BIT_RAW 0x08 /* otherwise 8-bit raw */
#define EM28XX_VINCTRL_FID_ON_HREF 0x04
#define EM28XX_VINCTRL_DUAL_EDGE_STROBE 0x02
#define EM28XX_VINCTRL_INTERLACED 0x01
#define EM28XX_R12_VINENABLE 0x12 /* */
#define EM28XX_R14_GAMMA 0x14
#define EM28XX_R15_RGAIN 0x15
#define EM28XX_R16_GGAIN 0x16
#define EM28XX_R17_BGAIN 0x17
#define EM28XX_R18_ROFFSET 0x18
#define EM28XX_R19_GOFFSET 0x19
#define EM28XX_R1A_BOFFSET 0x1a
#define EM28XX_R1B_OFLOW 0x1b
#define EM28XX_R1C_HSTART 0x1c
#define EM28XX_R1D_VSTART 0x1d
#define EM28XX_R1E_CWIDTH 0x1e
#define EM28XX_R1F_CHEIGHT 0x1f
#define EM28XX_R20_YGAIN 0x20
#define EM28XX_R21_YOFFSET 0x21
#define EM28XX_R22_UVGAIN 0x22
#define EM28XX_R23_UOFFSET 0x23
#define EM28XX_R24_VOFFSET 0x24
#define EM28XX_R25_SHARPNESS 0x25
#define EM28XX_R26_COMPR 0x26
#define EM28XX_R27_OUTFMT 0x27
/* em28xx Output Format Register (0x27) */
#define EM28XX_OUTFMT_RGB_8_RGRG 0x00
#define EM28XX_OUTFMT_RGB_8_GRGR 0x01
#define EM28XX_OUTFMT_RGB_8_GBGB 0x02
#define EM28XX_OUTFMT_RGB_8_BGBG 0x03
#define EM28XX_OUTFMT_RGB_16_656 0x04
#define EM28XX_OUTFMT_RGB_8_BAYER 0x08 /* Pattern in Reg 0x10[1-0] */
#define EM28XX_OUTFMT_YUV211 0x10
#define EM28XX_OUTFMT_YUV422_Y0UY1V 0x14
#define EM28XX_OUTFMT_YUV422_Y1UY0V 0x15
#define EM28XX_OUTFMT_YUV411 0x18
#define EM28XX_R28_XMIN 0x28
#define EM28XX_R29_XMAX 0x29
#define EM28XX_R2A_YMIN 0x2a
#define EM28XX_R2B_YMAX 0x2b
#define EM28XX_R30_HSCALELOW 0x30
#define EM28XX_R31_HSCALEHIGH 0x31
#define EM28XX_R32_VSCALELOW 0x32
#define EM28XX_R33_VSCALEHIGH 0x33
#define EM28XX_R34_VBI_START_H 0x34
#define EM28XX_R35_VBI_START_V 0x35
#define EM28XX_R36_VBI_WIDTH 0x36
#define EM28XX_R37_VBI_HEIGHT 0x37
#define EM28XX_R40_AC97LSB 0x40
#define EM28XX_R41_AC97MSB 0x41
#define EM28XX_R42_AC97ADDR 0x42
#define EM28XX_R43_AC97BUSY 0x43
#define EM28XX_R45_IR 0x45
/* 0x45 bit 7 - parity bit
bits 6-0 - count
0x46 IR brand
0x47 IR data
*/
/* em2874 registers */
#define EM2874_R50_IR_CONFIG 0x50
#define EM2874_R51_IR 0x51
#define EM2874_R5F_TS_ENABLE 0x5f
#define EM2874_R80_GPIO 0x80
/* em2874 IR config register (0x50) */
#define EM2874_IR_NEC 0x00
#define EM2874_IR_RC5 0x04
#define EM2874_IR_RC6_MODE_0 0x08
#define EM2874_IR_RC6_MODE_6A 0x0b
/* em2874 Transport Stream Enable Register (0x5f) */
#define EM2874_TS1_CAPTURE_ENABLE (1 << 0)
#define EM2874_TS1_FILTER_ENABLE (1 << 1)
#define EM2874_TS1_NULL_DISCARD (1 << 2)
#define EM2874_TS2_CAPTURE_ENABLE (1 << 4)
#define EM2874_TS2_FILTER_ENABLE (1 << 5)
#define EM2874_TS2_NULL_DISCARD (1 << 6)
/* register settings */
#define EM2800_AUDIO_SRC_TUNER 0x0d
#define EM2800_AUDIO_SRC_LINE 0x0c
#define EM28XX_AUDIO_SRC_TUNER 0xc0
#define EM28XX_AUDIO_SRC_LINE 0x80
/* FIXME: Need to be populated with the other chip ID's */
enum em28xx_chip_id {
CHIP_ID_EM2800 = 7,
CHIP_ID_EM2710 = 17,
CHIP_ID_EM2820 = 18, /* Also used by some em2710 */
CHIP_ID_EM2840 = 20,
CHIP_ID_EM2750 = 33,
CHIP_ID_EM2860 = 34,
CHIP_ID_EM2870 = 35,
CHIP_ID_EM2883 = 36,
CHIP_ID_EM2874 = 65,
CHIP_ID_EM2884 = 68,
CHIP_ID_EM28174 = 113,
};
/*
* Registers used by em202
*/
/* EMP202 vendor registers */
#define EM202_EXT_MODEM_CTRL 0x3e
#define EM202_GPIO_CONF 0x4c
#define EM202_GPIO_POLARITY 0x4e
#define EM202_GPIO_STICKY 0x50
#define EM202_GPIO_MASK 0x52
#define EM202_GPIO_STATUS 0x54
#define EM202_SPDIF_OUT_SEL 0x6a
#define EM202_ANTIPOP 0x72
#define EM202_EAPD_GPIO_ACCESS 0x74

145
drivers/media/usb/em28xx/em28xx-vbi.c 一般檔案
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/*
em28xx-vbi.c - VBI driver for em28xx
Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
This work was sponsored by EyeMagnet 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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/hardirq.h>
#include <linux/init.h>
#include "em28xx.h"
static unsigned int vbibufs = 5;
module_param(vbibufs, int, 0644);
MODULE_PARM_DESC(vbibufs, "number of vbi buffers, range 2-32");
static unsigned int vbi_debug;
module_param(vbi_debug, int, 0644);
MODULE_PARM_DESC(vbi_debug, "enable debug messages [vbi]");
#define dprintk(level, fmt, arg...) if (vbi_debug >= level) \
printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
/* ------------------------------------------------------------------ */
static void
free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
{
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
unsigned long flags = 0;
if (in_interrupt())
BUG();
/* We used to wait for the buffer to finish here, but this didn't work
because, as we were keeping the state as VIDEOBUF_QUEUED,
videobuf_queue_cancel marked it as finished for us.
(Also, it could wedge forever if the hardware was misconfigured.)
This should be safe; by the time we get here, the buffer isn't
queued anymore. If we ever start marking the buffers as
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->slock, flags);
if (dev->isoc_ctl.vbi_buf == buf)
dev->isoc_ctl.vbi_buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static int
vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
{
struct em28xx_fh *fh = q->priv_data;
struct em28xx *dev = fh->dev;
*size = dev->vbi_width * dev->vbi_height * 2;
if (0 == *count)
*count = vbibufs;
if (*count < 2)
*count = 2;
if (*count > 32)
*count = 32;
return 0;
}
static int
vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct em28xx_fh *fh = q->priv_data;
struct em28xx *dev = fh->dev;
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
int rc = 0;
buf->vb.size = dev->vbi_width * dev->vbi_height * 2;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
buf->vb.width = dev->vbi_width;
buf->vb.height = dev->vbi_height;
buf->vb.field = field;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(q, &buf->vb, NULL);
if (rc < 0)
goto fail;
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
free_buffer(q, buf);
return rc;
}
static void
vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct em28xx_buffer *buf = container_of(vb,
struct em28xx_buffer,
vb);
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vbiq->active);
}
static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
free_buffer(q, buf);
}
struct videobuf_queue_ops em28xx_vbi_qops = {
.buf_setup = vbi_setup,
.buf_prepare = vbi_prepare,
.buf_queue = vbi_queue,
.buf_release = vbi_release,
};

2624
drivers/media/usb/em28xx/em28xx-video.c 一般檔案
查看文件

檔案差異因為檔案過大而無法顯示 載入差異

809
drivers/media/usb/em28xx/em28xx.h 一般檔案
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/*
em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
Ludovico Cavedon <cavedon@sssup.it>
Mauro Carvalho Chehab <mchehab@infradead.org>
Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
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.
*/
#ifndef _EM28XX_H
#define _EM28XX_H
#include <linux/workqueue.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/ir-kbd-i2c.h>
#include <media/rc-core.h>
#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
#include <media/videobuf-dvb.h>
#endif
#include "tuner-xc2028.h"
#include "xc5000.h"
#include "em28xx-reg.h"
/* Boards supported by driver */
#define EM2800_BOARD_UNKNOWN 0
#define EM2820_BOARD_UNKNOWN 1
#define EM2820_BOARD_TERRATEC_CINERGY_250 2
#define EM2820_BOARD_PINNACLE_USB_2 3
#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
#define EM2820_BOARD_MSI_VOX_USB_2 5
#define EM2800_BOARD_TERRATEC_CINERGY_200 6
#define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
#define EM2800_BOARD_KWORLD_USB2800 8
#define EM2820_BOARD_PINNACLE_DVC_90 9
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
#define EM2880_BOARD_TERRATEC_HYBRID_XS 11
#define EM2820_BOARD_KWORLD_PVRTV2800RF 12
#define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
#define EM2820_BOARD_PROLINK_PLAYTV_USB2 14
#define EM2800_BOARD_VGEAR_POCKETTV 15
#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 16
#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
#define EM2860_BOARD_SAA711X_REFERENCE_DESIGN 19
#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
#define EM2800_BOARD_GRABBEEX_USB2800 21
#define EM2750_BOARD_UNKNOWN 22
#define EM2750_BOARD_DLCW_130 23
#define EM2820_BOARD_DLINK_USB_TV 24
#define EM2820_BOARD_GADMEI_UTV310 25
#define EM2820_BOARD_HERCULES_SMART_TV_USB2 26
#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME 27
#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
#define EM2860_BOARD_TVP5150_REFERENCE_DESIGN 29
#define EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
#define EM2821_BOARD_USBGEAR_VD204 31
#define EM2821_BOARD_SUPERCOMP_USB_2 32
#define EM2860_BOARD_ELGATO_VIDEO_CAPTURE 33
#define EM2860_BOARD_TERRATEC_HYBRID_XS 34
#define EM2860_BOARD_TYPHOON_DVD_MAKER 35
#define EM2860_BOARD_NETGMBH_CAM 36
#define EM2860_BOARD_GADMEI_UTV330 37
#define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
#define EM2861_BOARD_KWORLD_PVRTV_300U 39
#define EM2861_BOARD_PLEXTOR_PX_TV100U 40
#define EM2870_BOARD_KWORLD_350U 41
#define EM2870_BOARD_KWORLD_355U 42
#define EM2870_BOARD_TERRATEC_XS 43
#define EM2870_BOARD_TERRATEC_XS_MT2060 44
#define EM2870_BOARD_PINNACLE_PCTV_DVB 45
#define EM2870_BOARD_COMPRO_VIDEOMATE 46
#define EM2880_BOARD_KWORLD_DVB_305U 47
#define EM2880_BOARD_KWORLD_DVB_310U 48
#define EM2880_BOARD_MSI_DIGIVOX_AD 49
#define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
#define EM2881_BOARD_DNT_DA2_HYBRID 52
#define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
#define EM2882_BOARD_KWORLD_VS_DVBT 54
#define EM2882_BOARD_TERRATEC_HYBRID_XS 55
#define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E 56
#define EM2883_BOARD_KWORLD_HYBRID_330U 57
#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
#define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
#define EM2820_BOARD_GADMEI_TVR200 62
#define EM2860_BOARD_KAIOMY_TVNPC_U2 63
#define EM2860_BOARD_EASYCAP 64
#define EM2820_BOARD_IODATA_GVMVP_SZ 65
#define EM2880_BOARD_EMPIRE_DUAL_TV 66
#define EM2860_BOARD_TERRATEC_GRABBY 67
#define EM2860_BOARD_TERRATEC_AV350 68
#define EM2882_BOARD_KWORLD_ATSC_315U 69
#define EM2882_BOARD_EVGA_INDTUBE 70
#define EM2820_BOARD_SILVERCREST_WEBCAM 71
#define EM2861_BOARD_GADMEI_UTV330PLUS 72
#define EM2870_BOARD_REDDO_DVB_C_USB_BOX 73
#define EM2800_BOARD_VC211A 74
#define EM2882_BOARD_DIKOM_DK300 75
#define EM2870_BOARD_KWORLD_A340 76
#define EM2874_BOARD_LEADERSHIP_ISDBT 77
#define EM28174_BOARD_PCTV_290E 78
#define EM2884_BOARD_TERRATEC_H5 79
#define EM28174_BOARD_PCTV_460E 80
#define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C 81
#define EM2884_BOARD_CINERGY_HTC_STICK 82
#define EM2860_BOARD_HT_VIDBOX_NW03 83
#define EM2874_BOARD_MAXMEDIA_UB425_TC 84
#define EM2884_BOARD_PCTV_510E 85
#define EM2884_BOARD_PCTV_520E 86
/* Limits minimum and default number of buffers */
#define EM28XX_MIN_BUF 4
#define EM28XX_DEF_BUF 8
/*Limits the max URB message size */
#define URB_MAX_CTRL_SIZE 80
/* Params for validated field */
#define EM28XX_BOARD_NOT_VALIDATED 1
#define EM28XX_BOARD_VALIDATED 0
/* Params for em28xx_cmd() audio */
#define EM28XX_START_AUDIO 1
#define EM28XX_STOP_AUDIO 0
/* maximum number of em28xx boards */
#define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
/* maximum number of frames that can be queued */
#define EM28XX_NUM_FRAMES 5
/* number of frames that get used for v4l2_read() */
#define EM28XX_NUM_READ_FRAMES 2
/* number of buffers for isoc transfers */
#define EM28XX_NUM_BUFS 5
#define EM28XX_DVB_NUM_BUFS 5
/* number of packets for each buffer
windows requests only 64 packets .. so we better do the same
this is what I found out for all alternate numbers there!
*/
#define EM28XX_NUM_PACKETS 64
#define EM28XX_DVB_MAX_PACKETS 64
#define EM28XX_INTERLACED_DEFAULT 1
/*
#define (use usbview if you want to get the other alternate number infos)
#define
#define alternate number 2
#define Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1448
Interval: 125us
alternate number 7
Endpoint Address: 82
Direction: in
Attribute: 1
Type: Isoc
Max Packet Size: 3072
Interval: 125us
*/
/* time to wait when stopping the isoc transfer */
#define EM28XX_URB_TIMEOUT \
msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
/* time in msecs to wait for i2c writes to finish */
#define EM2800_I2C_WRITE_TIMEOUT 20
enum em28xx_mode {
EM28XX_SUSPEND,
EM28XX_ANALOG_MODE,
EM28XX_DIGITAL_MODE,
};
struct em28xx;
struct em28xx_usb_isoc_bufs {
/* max packet size of isoc transaction */
int max_pkt_size;
/* number of packets in each buffer */
int num_packets;
/* number of allocated urbs */
int num_bufs;
/* urb for isoc transfers */
struct urb **urb;
/* transfer buffers for isoc transfer */
char **transfer_buffer;
};
struct em28xx_usb_isoc_ctl {
/* isoc transfer buffers for analog mode */
struct em28xx_usb_isoc_bufs analog_bufs;
/* isoc transfer buffers for digital mode */
struct em28xx_usb_isoc_bufs digital_bufs;
/* Stores already requested buffers */
struct em28xx_buffer *vid_buf;
struct em28xx_buffer *vbi_buf;
/* isoc urb callback */
int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
};
/* Struct to enumberate video formats */
struct em28xx_fmt {
char *name;
u32 fourcc; /* v4l2 format id */
int depth;
int reg;
};
/* buffer for one video frame */
struct em28xx_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
struct list_head frame;
int top_field;
};
struct em28xx_dmaqueue {
struct list_head active;
wait_queue_head_t wq;
/* Counters to control buffer fill */
int pos;
};
/* inputs */
#define MAX_EM28XX_INPUT 4
enum enum28xx_itype {
EM28XX_VMUX_COMPOSITE1 = 1,
EM28XX_VMUX_COMPOSITE2,
EM28XX_VMUX_COMPOSITE3,
EM28XX_VMUX_COMPOSITE4,
EM28XX_VMUX_SVIDEO,
EM28XX_VMUX_TELEVISION,
EM28XX_VMUX_CABLE,
EM28XX_VMUX_DVB,
EM28XX_VMUX_DEBUG,
EM28XX_RADIO,
};
enum em28xx_ac97_mode {
EM28XX_NO_AC97 = 0,
EM28XX_AC97_EM202,
EM28XX_AC97_SIGMATEL,
EM28XX_AC97_OTHER,
};
struct em28xx_audio_mode {
enum em28xx_ac97_mode ac97;
u16 ac97_feat;
u32 ac97_vendor_id;
unsigned int has_audio:1;
unsigned int i2s_3rates:1;
unsigned int i2s_5rates:1;
};
/* em28xx has two audio inputs: tuner and line in.
However, on most devices, an auxiliary AC97 codec device is used.
The AC97 device may have several different inputs and outputs,
depending on their model. So, it is possible to use AC97 mixer to
address more than two different entries.
*/
enum em28xx_amux {
/* This is the only entry for em28xx tuner input */
EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
/* Some less-common mixer setups */
EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
EM28XX_AMUX_PHONE,
EM28XX_AMUX_MIC,
EM28XX_AMUX_CD,
EM28XX_AMUX_AUX,
EM28XX_AMUX_PCM_OUT,
};
enum em28xx_aout {
/* AC97 outputs */
EM28XX_AOUT_MASTER = 1 << 0,
EM28XX_AOUT_LINE = 1 << 1,
EM28XX_AOUT_MONO = 1 << 2,
EM28XX_AOUT_LFE = 1 << 3,
EM28XX_AOUT_SURR = 1 << 4,
/* PCM IN Mixer - used by AC97_RECORD_SELECT register */
EM28XX_AOUT_PCM_IN = 1 << 7,
/* Bits 10-8 are used to indicate the PCM IN record select */
EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
EM28XX_AOUT_PCM_CD = 1 << 8,
EM28XX_AOUT_PCM_VIDEO = 2 << 8,
EM28XX_AOUT_PCM_AUX = 3 << 8,
EM28XX_AOUT_PCM_LINE = 4 << 8,
EM28XX_AOUT_PCM_STEREO = 5 << 8,
EM28XX_AOUT_PCM_MONO = 6 << 8,
EM28XX_AOUT_PCM_PHONE = 7 << 8,
};
static inline int ac97_return_record_select(int a_out)
{
return (a_out & 0x700) >> 8;
}
struct em28xx_reg_seq {
int reg;
unsigned char val, mask;
int sleep;
};
struct em28xx_input {
enum enum28xx_itype type;
unsigned int vmux;
enum em28xx_amux amux;
enum em28xx_aout aout;
struct em28xx_reg_seq *gpio;
};
#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
enum em28xx_decoder {
EM28XX_NODECODER = 0,
EM28XX_TVP5150,
EM28XX_SAA711X,
};
enum em28xx_sensor {
EM28XX_NOSENSOR = 0,
EM28XX_MT9V011,
EM28XX_MT9M001,
EM28XX_MT9M111,
};
enum em28xx_adecoder {
EM28XX_NOADECODER = 0,
EM28XX_TVAUDIO,
};
struct em28xx_board {
char *name;
int vchannels;
int tuner_type;
int tuner_addr;
/* i2c flags */
unsigned int tda9887_conf;
/* GPIO sequences */
struct em28xx_reg_seq *dvb_gpio;
struct em28xx_reg_seq *suspend_gpio;
struct em28xx_reg_seq *tuner_gpio;
struct em28xx_reg_seq *mute_gpio;
unsigned int is_em2800:1;
unsigned int has_msp34xx:1;
unsigned int mts_firmware:1;
unsigned int max_range_640_480:1;
unsigned int has_dvb:1;
unsigned int has_snapshot_button:1;
unsigned int is_webcam:1;
unsigned int valid:1;
unsigned int has_ir_i2c:1;
unsigned char xclk, i2c_speed;
unsigned char radio_addr;
unsigned short tvaudio_addr;
enum em28xx_decoder decoder;
enum em28xx_adecoder adecoder;
struct em28xx_input input[MAX_EM28XX_INPUT];
struct em28xx_input radio;
char *ir_codes;
};
struct em28xx_eeprom {
u32 id; /* 0x9567eb1a */
u16 vendor_ID;
u16 product_ID;
u16 chip_conf;
u16 board_conf;
u16 string1, string2, string3;
u8 string_idx_table;
};
/* device states */
enum em28xx_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
#define EM28XX_AUDIO_BUFS 5
#define EM28XX_NUM_AUDIO_PACKETS 64
#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
#define EM28XX_CAPTURE_STREAM_EN 1
/* em28xx extensions */
#define EM28XX_AUDIO 0x10
#define EM28XX_DVB 0x20
#define EM28XX_RC 0x30
/* em28xx resource types (used for res_get/res_lock etc */
#define EM28XX_RESOURCE_VIDEO 0x01
#define EM28XX_RESOURCE_VBI 0x02
struct em28xx_audio {
char name[50];
char *transfer_buffer[EM28XX_AUDIO_BUFS];
struct urb *urb[EM28XX_AUDIO_BUFS];
struct usb_device *udev;
unsigned int capture_transfer_done;
struct snd_pcm_substream *capture_pcm_substream;
unsigned int hwptr_done_capture;
struct snd_card *sndcard;
int users;
spinlock_t slock;
};
struct em28xx;
struct em28xx_fh {
struct em28xx *dev;
int radio;
unsigned int resources;
struct videobuf_queue vb_vidq;
struct videobuf_queue vb_vbiq;
enum v4l2_buf_type type;
};
/* main device struct */
struct em28xx {
/* generic device properties */
char name[30]; /* name (including minor) of the device */
int model; /* index in the device_data struct */
int devno; /* marks the number of this device */
enum em28xx_chip_id chip_id;
int audio_ifnum;
struct v4l2_device v4l2_dev;
struct em28xx_board board;
/* Webcam specific fields */
enum em28xx_sensor em28xx_sensor;
int sensor_xres, sensor_yres;
int sensor_xtal;
/* Allows progressive (e. g. non-interlaced) mode */
int progressive;
/* Vinmode/Vinctl used at the driver */
int vinmode, vinctl;
unsigned int has_audio_class:1;
unsigned int has_alsa_audio:1;
unsigned int is_audio_only:1;
/* Controls audio streaming */
struct work_struct wq_trigger; /* Trigger to start/stop audio for alsa module */
atomic_t stream_started; /* stream should be running if true */
struct em28xx_fmt *format;
struct em28xx_IR *ir;
/* Some older em28xx chips needs a waiting time after writing */
unsigned int wait_after_write;
struct list_head devlist;
u32 i2s_speed; /* I2S speed for audio digital stream */
struct em28xx_audio_mode audio_mode;
int tuner_type; /* type of the tuner */
int tuner_addr; /* tuner address */
int tda9887_conf;
/* i2c i/o */
struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
/* video for linux */
int users; /* user count for exclusive use */
struct video_device *vdev; /* video for linux device struct */
v4l2_std_id norm; /* selected tv norm */
int ctl_freq; /* selected frequency */
unsigned int ctl_input; /* selected input */
unsigned int ctl_ainput;/* selected audio input */
unsigned int ctl_aoutput;/* selected audio output */
int mute;
int volume;
/* frame properties */
int width; /* current frame width */
int height; /* current frame height */
unsigned hscale; /* horizontal scale factor (see datasheet) */
unsigned vscale; /* vertical scale factor (see datasheet) */
int interlaced; /* 1=interlace fileds, 0=just top fileds */
unsigned int video_bytesread; /* Number of bytes read */
unsigned long hash; /* eeprom hash - for boards with generic ID */
unsigned long i2c_hash; /* i2c devicelist hash -
for boards with generic ID */
struct em28xx_audio adev;
/* states */
enum em28xx_dev_state state;
/* vbi related state tracking */
int capture_type;
int vbi_read;
unsigned char cur_field;
unsigned int vbi_width;
unsigned int vbi_height; /* lines per field */
struct work_struct request_module_wk;
/* locks */
struct mutex lock;
struct mutex ctrl_urb_lock; /* protects urb_buf */
/* spinlock_t queue_lock; */
struct list_head inqueue, outqueue;
struct video_device *vbi_dev;
struct video_device *radio_dev;
/* resources in use */
unsigned int resources;
unsigned char eedata[256];
/* Isoc control struct */
struct em28xx_dmaqueue vidq;
struct em28xx_dmaqueue vbiq;
struct em28xx_usb_isoc_ctl isoc_ctl;
spinlock_t slock;
/* usb transfer */
struct usb_device *udev; /* the usb device */
int alt; /* alternate */
int max_pkt_size; /* max packet size of isoc transaction */
int num_alt; /* Number of alternative settings */
unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
int dvb_alt; /* alternate for DVB */
unsigned int dvb_max_pkt_size; /* wMaxPacketSize for DVB */
char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
/* helper funcs that call usb_control_msg */
int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
char *buf, int len);
int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
char *buf, int len);
int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
char *buf, int len);
int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
enum em28xx_mode mode;
/* register numbers for GPO/GPIO registers */
u16 reg_gpo_num, reg_gpio_num;
/* Caches GPO and GPIO registers */
unsigned char reg_gpo, reg_gpio;
/* Snapshot button */
char snapshot_button_path[30]; /* path of the input dev */
struct input_dev *sbutton_input_dev;
struct delayed_work sbutton_query_work;
struct em28xx_dvb *dvb;
/* I2C keyboard data */
struct IR_i2c_init_data init_data;
};
struct em28xx_ops {
struct list_head next;
char *name;
int id;
int (*init)(struct em28xx *);
int (*fini)(struct em28xx *);
};
/* Provided by em28xx-i2c.c */
void em28xx_do_i2c_scan(struct em28xx *dev);
int em28xx_i2c_register(struct em28xx *dev);
int em28xx_i2c_unregister(struct em28xx *dev);
/* Provided by em28xx-core.c */
u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
void em28xx_queue_unusedframes(struct em28xx *dev);
void em28xx_release_buffers(struct em28xx *dev);
int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
char *buf, int len);
int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
int em28xx_read_reg(struct em28xx *dev, u16 reg);
int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
int len);
int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
u8 bitmask);
int em28xx_read_ac97(struct em28xx *dev, u8 reg);
int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
int em28xx_audio_analog_set(struct em28xx *dev);
int em28xx_audio_setup(struct em28xx *dev);
int em28xx_colorlevels_set_default(struct em28xx *dev);
int em28xx_capture_start(struct em28xx *dev, int start);
int em28xx_vbi_supported(struct em28xx *dev);
int em28xx_set_outfmt(struct em28xx *dev);
int em28xx_resolution_set(struct em28xx *dev);
int em28xx_set_alternate(struct em28xx *dev);
int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size);
int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
void em28xx_uninit_isoc(struct em28xx *dev, enum em28xx_mode mode);
void em28xx_stop_urbs(struct em28xx *dev);
int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
void em28xx_wake_i2c(struct em28xx *dev);
int em28xx_register_extension(struct em28xx_ops *dev);
void em28xx_unregister_extension(struct em28xx_ops *dev);
void em28xx_init_extension(struct em28xx *dev);
void em28xx_close_extension(struct em28xx *dev);
/* Provided by em28xx-video.c */
int em28xx_register_analog_devices(struct em28xx *dev);
void em28xx_release_analog_resources(struct em28xx *dev);
/* Provided by em28xx-cards.c */
extern int em2800_variant_detect(struct usb_device *udev, int model);
extern struct em28xx_board em28xx_boards[];
extern struct usb_device_id em28xx_id_table[];
extern const unsigned int em28xx_bcount;
int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
void em28xx_release_resources(struct em28xx *dev);
/* Provided by em28xx-vbi.c */
extern struct videobuf_queue_ops em28xx_vbi_qops;
/* printk macros */
#define em28xx_err(fmt, arg...) do {\
printk(KERN_ERR fmt , ##arg); } while (0)
#define em28xx_errdev(fmt, arg...) do {\
printk(KERN_ERR "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em28xx_info(fmt, arg...) do {\
printk(KERN_INFO "%s: "fmt,\
dev->name , ##arg); } while (0)
#define em28xx_warn(fmt, arg...) do {\
printk(KERN_WARNING "%s: "fmt,\
dev->name , ##arg); } while (0)
static inline int em28xx_compression_disable(struct em28xx *dev)
{
/* side effect of disabling scaler and mixer */
return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
}
static inline int em28xx_contrast_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
}
static inline int em28xx_brightness_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
}
static inline int em28xx_saturation_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
}
static inline int em28xx_u_balance_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
}
static inline int em28xx_v_balance_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
}
static inline int em28xx_gamma_get(struct em28xx *dev)
{
return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
}
static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
}
static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
}
static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
}
static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
}
static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
}
static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
{
u8 tmp = (u8) val;
return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
}
/*FIXME: maxw should be dependent of alt mode */
static inline unsigned int norm_maxw(struct em28xx *dev)
{
if (dev->board.is_webcam)
return dev->sensor_xres;
if (dev->board.max_range_640_480)
return 640;
return 720;
}
static inline unsigned int norm_maxh(struct em28xx *dev)
{
if (dev->board.is_webcam)
return dev->sensor_yres;
if (dev->board.max_range_640_480)
return 480;
return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
}
#endif