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Initial commit; kernel source import

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Nathan
2025-04-06 23:50:55 -05:00
commit 25c6d769f4
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63
drivers/media/usb/em28xx/Kconfig Normal file
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config VIDEO_EM28XX
tristate "Empia EM28xx USB video capture support"
depends on VIDEO_DEV && I2C
select VIDEO_TUNER
select VIDEO_TVEEPROM
select VIDEOBUF2_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_LGDT3305 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 DVB_MT352 if MEDIA_SUBDRV_AUTOSELECT
select DVB_S5H1409 if MEDIA_SUBDRV_AUTOSELECT
select DVB_MB86A20S if MEDIA_SUBDRV_AUTOSELECT
select MEDIA_TUNER_QT1010 if MEDIA_SUBDRV_AUTOSELECT
select MEDIA_TUNER_TDA18271 if MEDIA_SUBDRV_AUTOSELECT
---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 Normal file
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em28xx-y += em28xx-video.o em28xx-i2c.o em28xx-cards.o
em28xx-y += em28xx-core.o em28xx-vbi.o em28xx-camera.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 Normal file
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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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/*
em28xx-camera.c - driver for Empia EM25xx/27xx/28xx USB video capture devices
Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@infradead.org>
Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
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/i2c.h>
#include <media/soc_camera.h>
#include <media/mt9v011.h>
#include <media/v4l2-common.h>
#include "em28xx.h"
/* Possible i2c addresses of Micron sensors */
static unsigned short micron_sensor_addrs[] = {
0xb8 >> 1, /* MT9V111, MT9V403 */
0xba >> 1, /* MT9M001/011/111/112, MT9V011/012/112, MT9D011 */
0x90 >> 1, /* MT9V012/112, MT9D011 (alternative address) */
I2C_CLIENT_END
};
/* Possible i2c addresses of Omnivision sensors */
static unsigned short omnivision_sensor_addrs[] = {
0x42 >> 1, /* OV7725, OV7670/60/48 */
0x60 >> 1, /* OV2640, OV9650/53/55 */
I2C_CLIENT_END
};
static struct soc_camera_link camlink = {
.bus_id = 0,
.flags = 0,
.module_name = "em28xx",
};
/* FIXME: Should be replaced by a proper mt9m111 driver */
static int em28xx_initialize_mt9m111(struct em28xx *dev)
{
int i;
unsigned char regs[][3] = {
{ 0x0d, 0x00, 0x01, }, /* reset and use defaults */
{ 0x0d, 0x00, 0x00, },
{ 0x0a, 0x00, 0x21, },
{ 0x21, 0x04, 0x00, }, /* full readout speed, no row/col skipping */
};
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
&regs[i][0], 3);
return 0;
}
/* FIXME: Should be replaced by a proper mt9m001 driver */
static int em28xx_initialize_mt9m001(struct em28xx *dev)
{
int i;
unsigned char regs[][3] = {
{ 0x0d, 0x00, 0x01, },
{ 0x0d, 0x00, 0x00, },
{ 0x04, 0x05, 0x00, }, /* hres = 1280 */
{ 0x03, 0x04, 0x00, }, /* vres = 1024 */
{ 0x20, 0x11, 0x00, },
{ 0x06, 0x00, 0x10, },
{ 0x2b, 0x00, 0x24, },
{ 0x2e, 0x00, 0x24, },
{ 0x35, 0x00, 0x24, },
{ 0x2d, 0x00, 0x20, },
{ 0x2c, 0x00, 0x20, },
{ 0x09, 0x0a, 0xd4, },
{ 0x35, 0x00, 0x57, },
};
for (i = 0; i < ARRAY_SIZE(regs); i++)
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
&regs[i][0], 3);
return 0;
}
/*
* Probes Micron sensors with 8 bit address and 16 bit register width
*/
static int em28xx_probe_sensor_micron(struct em28xx *dev)
{
int ret, i;
char *name;
u8 reg;
__be16 id_be;
u16 id;
struct i2c_client client = dev->i2c_client[dev->def_i2c_bus];
dev->em28xx_sensor = EM28XX_NOSENSOR;
for (i = 0; micron_sensor_addrs[i] != I2C_CLIENT_END; i++) {
client.addr = micron_sensor_addrs[i];
/* NOTE: i2c_smbus_read_word_data() doesn't work with BE data */
/* Read chip ID from register 0x00 */
reg = 0x00;
ret = i2c_master_send(&client, &reg, 1);
if (ret < 0) {
if (ret != -ENODEV)
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
ret = i2c_master_recv(&client, (u8 *)&id_be, 2);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
id = be16_to_cpu(id_be);
/* Read chip ID from register 0xff */
reg = 0xff;
ret = i2c_master_send(&client, &reg, 1);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
ret = i2c_master_recv(&client, (u8 *)&id_be, 2);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
/* Validate chip ID to be sure we have a Micron device */
if (id != be16_to_cpu(id_be))
continue;
/* Check chip ID */
id = be16_to_cpu(id_be);
switch (id) {
case 0x1222:
name = "MT9V012"; /* MI370 */ /* 640x480 */
break;
case 0x1229:
name = "MT9V112"; /* 640x480 */
break;
case 0x1433:
name = "MT9M011"; /* 1280x1024 */
break;
case 0x143a: /* found in the ECS G200 */
name = "MT9M111"; /* MI1310 */ /* 1280x1024 */
dev->em28xx_sensor = EM28XX_MT9M111;
break;
case 0x148c:
name = "MT9M112"; /* MI1320 */ /* 1280x1024 */
break;
case 0x1511:
name = "MT9D011"; /* MI2010 */ /* 1600x1200 */
break;
case 0x8232:
case 0x8243: /* rev B */
name = "MT9V011"; /* MI360 */ /* 640x480 */
dev->em28xx_sensor = EM28XX_MT9V011;
break;
case 0x8431:
name = "MT9M001"; /* 1280x1024 */
dev->em28xx_sensor = EM28XX_MT9M001;
break;
default:
em28xx_info("unknown Micron sensor detected: 0x%04x\n",
id);
return 0;
}
if (dev->em28xx_sensor == EM28XX_NOSENSOR)
em28xx_info("unsupported sensor detected: %s\n", name);
else
em28xx_info("sensor %s detected\n", name);
dev->i2c_client[dev->def_i2c_bus].addr = client.addr;
return 0;
}
return -ENODEV;
}
/*
* Probes Omnivision sensors with 8 bit address and register width
*/
static int em28xx_probe_sensor_omnivision(struct em28xx *dev)
{
int ret, i;
char *name;
u8 reg;
u16 id;
struct i2c_client client = dev->i2c_client[dev->def_i2c_bus];
dev->em28xx_sensor = EM28XX_NOSENSOR;
/* NOTE: these devices have the register auto incrementation disabled
* by default, so we have to use single byte reads ! */
for (i = 0; omnivision_sensor_addrs[i] != I2C_CLIENT_END; i++) {
client.addr = omnivision_sensor_addrs[i];
/* Read manufacturer ID from registers 0x1c-0x1d (BE) */
reg = 0x1c;
ret = i2c_smbus_read_byte_data(&client, reg);
if (ret < 0) {
if (ret != -ENODEV)
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
id = ret << 8;
reg = 0x1d;
ret = i2c_smbus_read_byte_data(&client, reg);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
id += ret;
/* Check manufacturer ID */
if (id != 0x7fa2)
continue;
/* Read product ID from registers 0x0a-0x0b (BE) */
reg = 0x0a;
ret = i2c_smbus_read_byte_data(&client, reg);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
id = ret << 8;
reg = 0x0b;
ret = i2c_smbus_read_byte_data(&client, reg);
if (ret < 0) {
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
client.addr << 1, ret);
continue;
}
id += ret;
/* Check product ID */
switch (id) {
case 0x2642:
name = "OV2640";
dev->em28xx_sensor = EM28XX_OV2640;
break;
case 0x7648:
name = "OV7648";
break;
case 0x7660:
name = "OV7660";
break;
case 0x7673:
name = "OV7670";
break;
case 0x7720:
name = "OV7720";
break;
case 0x7721:
name = "OV7725";
break;
case 0x9648: /* Rev 2 */
case 0x9649: /* Rev 3 */
name = "OV9640";
break;
case 0x9650:
case 0x9652: /* OV9653 */
name = "OV9650";
break;
case 0x9656: /* Rev 4 */
case 0x9657: /* Rev 5 */
name = "OV9655";
break;
default:
em28xx_info("unknown OmniVision sensor detected: 0x%04x\n",
id);
return 0;
}
if (dev->em28xx_sensor == EM28XX_NOSENSOR)
em28xx_info("unsupported sensor detected: %s\n", name);
else
em28xx_info("sensor %s detected\n", name);
dev->i2c_client[dev->def_i2c_bus].addr = client.addr;
return 0;
}
return -ENODEV;
}
int em28xx_detect_sensor(struct em28xx *dev)
{
int ret;
ret = em28xx_probe_sensor_micron(dev);
if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0)
ret = em28xx_probe_sensor_omnivision(dev);
/*
* NOTE: the Windows driver also probes i2c addresses
* 0x22 (Samsung ?) and 0x66 (Kodak ?)
*/
if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0) {
em28xx_info("No sensor detected\n");
return -ENODEV;
}
return 0;
}
int em28xx_init_camera(struct em28xx *dev)
{
switch (dev->em28xx_sensor) {
case EM28XX_MT9V011:
{
struct mt9v011_platform_data pdata;
struct i2c_board_info mt9v011_info = {
.type = "mt9v011",
.addr = dev->i2c_client[dev->def_i2c_bus].addr,
.platform_data = &pdata,
};
dev->sensor_xres = 640;
dev->sensor_yres = 480;
/*
* FIXME: mt9v011 uses I2S speed as xtal clk - at least with
* the Silvercrest cam I have here for testing - for higher
* resolutions, a high clock cause horizontal artifacts, so we
* need to use a lower xclk frequency.
* Yet, it would be possible to adjust xclk depending on the
* desired resolution, since this affects directly the
* frame rate.
*/
dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ;
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
dev->sensor_xtal = 4300000;
pdata.xtal = dev->sensor_xtal;
if (NULL ==
v4l2_i2c_new_subdev_board(&dev->v4l2_dev,
&dev->i2c_adap[dev->def_i2c_bus],
&mt9v011_info, NULL))
return -ENODEV;
/* probably means GRGB 16 bit bayer */
dev->vinmode = 0x0d;
dev->vinctl = 0x00;
break;
}
case EM28XX_MT9M001:
dev->sensor_xres = 1280;
dev->sensor_yres = 1024;
em28xx_initialize_mt9m001(dev);
/* probably means BGGR 16 bit bayer */
dev->vinmode = 0x0c;
dev->vinctl = 0x00;
break;
case EM28XX_MT9M111:
dev->sensor_xres = 640;
dev->sensor_yres = 512;
dev->board.xclk = EM28XX_XCLK_FREQUENCY_48MHZ;
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
em28xx_initialize_mt9m111(dev);
dev->vinmode = 0x0a;
dev->vinctl = 0x00;
break;
case EM28XX_OV2640:
{
struct v4l2_subdev *subdev;
struct i2c_board_info ov2640_info = {
.type = "ov2640",
.flags = I2C_CLIENT_SCCB,
.addr = dev->i2c_client[dev->def_i2c_bus].addr,
.platform_data = &camlink,
};
struct v4l2_mbus_framefmt fmt;
/*
* FIXME: sensor supports resolutions up to 1600x1200, but
* resolution setting/switching needs to be modified to
* - switch sensor output resolution (including further
* configuration changes)
* - adjust bridge xclk
* - disable 16 bit (12 bit) output formats on high resolutions
*/
dev->sensor_xres = 640;
dev->sensor_yres = 480;
subdev =
v4l2_i2c_new_subdev_board(&dev->v4l2_dev,
&dev->i2c_adap[dev->def_i2c_bus],
&ov2640_info, NULL);
fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
fmt.width = 640;
fmt.height = 480;
v4l2_subdev_call(subdev, video, s_mbus_fmt, &fmt);
/* NOTE: for UXGA=1600x1200 switch to 12MHz */
dev->board.xclk = EM28XX_XCLK_FREQUENCY_24MHZ;
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
dev->vinmode = 0x08;
dev->vinctl = 0x00;
break;
}
case EM28XX_NOSENSOR:
default:
return -EINVAL;
}
return 0;
}

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/*
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>
Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
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]");
/*
* em2800_i2c_send_bytes()
* send up to 4 bytes to the em2800 i2c device
*/
static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
{
int ret;
int write_timeout;
u8 b2[6];
if (len < 1 || len > 4)
return -EOPNOTSUPP;
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];
/* trigger write */
ret = dev->em28xx_write_regs(dev, 4 - len, &b2[4 - len], 2 + len);
if (ret != 2 + len) {
em28xx_warn("failed to trigger write to i2c address 0x%x (error=%i)\n",
addr, ret);
return (ret < 0) ? ret : -EIO;
}
/* wait for completion */
for (write_timeout = EM2800_I2C_XFER_TIMEOUT; write_timeout > 0;
write_timeout -= 5) {
ret = dev->em28xx_read_reg(dev, 0x05);
if (ret == 0x80 + len - 1) {
return len;
} else if (ret == 0x94 + len - 1) {
return -ENODEV;
} else if (ret < 0) {
em28xx_warn("failed to get i2c transfer status from bridge register (error=%i)\n",
ret);
return ret;
}
msleep(5);
}
em28xx_warn("write to i2c device at 0x%x timed out\n", addr);
return -EIO;
}
/*
* em2800_i2c_recv_bytes()
* read up to 4 bytes from the em2800 i2c device
*/
static int em2800_i2c_recv_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len)
{
u8 buf2[4];
int ret;
int read_timeout;
int i;
if (len < 1 || len > 4)
return -EOPNOTSUPP;
/* trigger read */
buf2[1] = 0x84 + len - 1;
buf2[0] = addr;
ret = dev->em28xx_write_regs(dev, 0x04, buf2, 2);
if (ret != 2) {
em28xx_warn("failed to trigger read from i2c address 0x%x (error=%i)\n",
addr, ret);
return (ret < 0) ? ret : -EIO;
}
/* wait for completion */
for (read_timeout = EM2800_I2C_XFER_TIMEOUT; read_timeout > 0;
read_timeout -= 5) {
ret = dev->em28xx_read_reg(dev, 0x05);
if (ret == 0x84 + len - 1) {
break;
} else if (ret == 0x94 + len - 1) {
return -ENODEV;
} else if (ret < 0) {
em28xx_warn("failed to get i2c transfer status from bridge register (error=%i)\n",
ret);
return ret;
}
msleep(5);
}
if (ret != 0x84 + len - 1)
em28xx_warn("read from i2c device at 0x%x timed out\n", addr);
/* get the received message */
ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4-len, buf2, len);
if (ret != len) {
em28xx_warn("reading from i2c device at 0x%x failed: couldn't get the received message from the bridge (error=%i)\n",
addr, ret);
return (ret < 0) ? ret : -EIO;
}
for (i = 0; i < len; i++)
buf[i] = buf2[len - 1 - i];
return ret;
}
/*
* em2800_i2c_check_for_device()
* check if there is an i2c device at the supplied address
*/
static int em2800_i2c_check_for_device(struct em28xx *dev, u8 addr)
{
u8 buf;
int ret;
ret = em2800_i2c_recv_bytes(dev, addr, &buf, 1);
if (ret == 1)
return 0;
return (ret < 0) ? ret : -EIO;
}
/*
* em28xx_i2c_send_bytes()
*/
static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
u16 len, int stop)
{
int write_timeout, ret;
if (len < 1 || len > 64)
return -EOPNOTSUPP;
/*
* NOTE: limited by the USB ctrl message constraints
* Zero length reads always succeed, even if no device is connected
*/
/* Write to i2c device */
ret = dev->em28xx_write_regs_req(dev, stop ? 2 : 3, addr, buf, len);
if (ret != len) {
if (ret < 0) {
em28xx_warn("writing to i2c device at 0x%x failed (error=%i)\n",
addr, ret);
return ret;
} else {
em28xx_warn("%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
len, addr, ret);
return -EIO;
}
}
/* Check success of the i2c operation */
for (write_timeout = EM2800_I2C_XFER_TIMEOUT; write_timeout > 0;
write_timeout -= 5) {
ret = dev->em28xx_read_reg(dev, 0x05);
if (ret == 0) { /* success */
return len;
} else if (ret == 0x10) {
return -ENODEV;
} else if (ret < 0) {
em28xx_warn("failed to read i2c transfer status from bridge (error=%i)\n",
ret);
return ret;
}
msleep(5);
/*
* NOTE: do we really have to wait for success ?
* Never seen anything else than 0x00 or 0x10
* (even with high payload) ...
*/
}
em28xx_warn("write to i2c device at 0x%x timed out\n", addr);
return -EIO;
}
/*
* em28xx_i2c_recv_bytes()
* read a byte from the i2c device
*/
static int em28xx_i2c_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf, u16 len)
{
int ret;
if (len < 1 || len > 64)
return -EOPNOTSUPP;
/*
* NOTE: limited by the USB ctrl message constraints
* Zero length reads always succeed, even if no device is connected
*/
/* Read data from i2c device */
ret = dev->em28xx_read_reg_req_len(dev, 2, addr, buf, len);
if (ret < 0) {
em28xx_warn("reading from i2c device at 0x%x failed (error=%i)\n",
addr, ret);
return ret;
}
/*
* NOTE: some devices with two i2c busses have the bad habit to return 0
* bytes if we are on bus B AND there was no write attempt to the
* specified slave address before AND no device is present at the
* requested slave address.
* Anyway, the next check will fail with -ENODEV in this case, so avoid
* spamming the system log on device probing and do nothing here.
*/
/* Check success of the i2c operation */
ret = dev->em28xx_read_reg(dev, 0x05);
if (ret < 0) {
em28xx_warn("failed to read i2c transfer status from bridge (error=%i)\n",
ret);
return ret;
}
if (ret > 0) {
if (ret == 0x10) {
return -ENODEV;
} else {
em28xx_warn("unknown i2c error (status=%i)\n", ret);
return -EIO;
}
}
return len;
}
/*
* 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, u16 addr)
{
int ret;
u8 buf;
ret = em28xx_i2c_recv_bytes(dev, addr, &buf, 1);
if (ret == 1)
return 0;
return (ret < 0) ? ret : -EIO;
}
/*
* em25xx_bus_B_send_bytes
* write bytes to the i2c device
*/
static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf,
u16 len)
{
int ret;
if (len < 1 || len > 64)
return -EOPNOTSUPP;
/*
* NOTE: limited by the USB ctrl message constraints
* Zero length reads always succeed, even if no device is connected
*/
/* Set register and write value */
ret = dev->em28xx_write_regs_req(dev, 0x06, addr, buf, len);
if (ret != len) {
if (ret < 0) {
em28xx_warn("writing to i2c device at 0x%x failed (error=%i)\n",
addr, ret);
return ret;
} else {
em28xx_warn("%i bytes write to i2c device at 0x%x requested, but %i bytes written\n",
len, addr, ret);
return -EIO;
}
}
/* Check success */
ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000);
/*
* NOTE: the only error we've seen so far is
* 0x01 when the slave device is not present
*/
if (!ret)
return len;
else if (ret > 0)
return -ENODEV;
return ret;
/*
* NOTE: With chip types (other chip IDs) which actually don't support
* this operation, it seems to succeed ALWAYS ! (even if there is no
* slave device or even no second i2c bus provided)
*/
}
/*
* em25xx_bus_B_recv_bytes
* read bytes from the i2c device
*/
static int em25xx_bus_B_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf,
u16 len)
{
int ret;
if (len < 1 || len > 64)
return -EOPNOTSUPP;
/*
* NOTE: limited by the USB ctrl message constraints
* Zero length reads always succeed, even if no device is connected
*/
/* Read value */
ret = dev->em28xx_read_reg_req_len(dev, 0x06, addr, buf, len);
if (ret < 0) {
em28xx_warn("reading from i2c device at 0x%x failed (error=%i)\n",
addr, ret);
return ret;
}
/*
* NOTE: some devices with two i2c busses have the bad habit to return 0
* bytes if we are on bus B AND there was no write attempt to the
* specified slave address before AND no device is present at the
* requested slave address.
* Anyway, the next check will fail with -ENODEV in this case, so avoid
* spamming the system log on device probing and do nothing here.
*/
/* Check success */
ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000);
/*
* NOTE: the only error we've seen so far is
* 0x01 when the slave device is not present
*/
if (!ret)
return len;
else if (ret > 0)
return -ENODEV;
return ret;
/*
* NOTE: With chip types (other chip IDs) which actually don't support
* this operation, it seems to succeed ALWAYS ! (even if there is no
* slave device or even no second i2c bus provided)
*/
}
/*
* em25xx_bus_B_check_for_device()
* check if there is a i2c device at the supplied address
*/
static int em25xx_bus_B_check_for_device(struct em28xx *dev, u16 addr)
{
u8 buf;
int ret;
ret = em25xx_bus_B_recv_bytes(dev, addr, &buf, 1);
if (ret < 0)
return ret;
return 0;
/*
* NOTE: With chips which do not support this operation,
* it seems to succeed ALWAYS ! (even if no device connected)
*/
}
static inline int i2c_check_for_device(struct em28xx_i2c_bus *i2c_bus, u16 addr)
{
struct em28xx *dev = i2c_bus->dev;
int rc = -EOPNOTSUPP;
if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
rc = em28xx_i2c_check_for_device(dev, addr);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
rc = em2800_i2c_check_for_device(dev, addr);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
rc = em25xx_bus_B_check_for_device(dev, addr);
if (rc == -ENODEV) {
if (i2c_debug)
printk(" no device\n");
}
return rc;
}
static inline int i2c_recv_bytes(struct em28xx_i2c_bus *i2c_bus,
struct i2c_msg msg)
{
struct em28xx *dev = i2c_bus->dev;
u16 addr = msg.addr << 1;
int byte, rc = -EOPNOTSUPP;
if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
rc = em28xx_i2c_recv_bytes(dev, addr, msg.buf, msg.len);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
rc = em2800_i2c_recv_bytes(dev, addr, msg.buf, msg.len);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
rc = em25xx_bus_B_recv_bytes(dev, addr, msg.buf, msg.len);
if (i2c_debug) {
for (byte = 0; byte < msg.len; byte++)
printk(" %02x", msg.buf[byte]);
}
return rc;
}
static inline int i2c_send_bytes(struct em28xx_i2c_bus *i2c_bus,
struct i2c_msg msg, int stop)
{
struct em28xx *dev = i2c_bus->dev;
u16 addr = msg.addr << 1;
int byte, rc = -EOPNOTSUPP;
if (i2c_debug) {
for (byte = 0; byte < msg.len; byte++)
printk(" %02x", msg.buf[byte]);
}
if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX)
rc = em28xx_i2c_send_bytes(dev, addr, msg.buf, msg.len, stop);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800)
rc = em2800_i2c_send_bytes(dev, addr, msg.buf, msg.len);
else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)
rc = em25xx_bus_B_send_bytes(dev, addr, msg.buf, msg.len);
return rc;
}
/*
* 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_i2c_bus *i2c_bus = i2c_adap->algo_data;
struct em28xx *dev = i2c_bus->dev;
unsigned bus = i2c_bus->bus;
int addr, rc, i;
u8 reg;
rc = rt_mutex_trylock(&dev->i2c_bus_lock);
if (rc < 0)
return rc;
/* Switch I2C bus if needed */
if (bus != dev->cur_i2c_bus &&
i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX) {
if (bus == 1)
reg = EM2874_I2C_SECONDARY_BUS_SELECT;
else
reg = 0;
em28xx_write_reg_bits(dev, EM28XX_R06_I2C_CLK, reg,
EM2874_I2C_SECONDARY_BUS_SELECT);
dev->cur_i2c_bus = bus;
}
if (num <= 0) {
rt_mutex_unlock(&dev->i2c_bus_lock);
return 0;
}
for (i = 0; i < num; i++) {
addr = msgs[i].addr << 1;
if (i2c_debug)
printk(KERN_DEBUG "%s at %s: %s %s addr=%02x len=%d:",
dev->name, __func__ ,
(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 */
rc = i2c_check_for_device(i2c_bus, addr);
if (rc == -ENODEV) {
rt_mutex_unlock(&dev->i2c_bus_lock);
return rc;
}
} else if (msgs[i].flags & I2C_M_RD) {
/* read bytes */
rc = i2c_recv_bytes(i2c_bus, msgs[i]);
} else {
/* write bytes */
rc = i2c_send_bytes(i2c_bus, msgs[i], i == num - 1);
}
if (rc < 0) {
if (i2c_debug)
printk(" ERROR: %i\n", rc);
rt_mutex_unlock(&dev->i2c_bus_lock);
return rc;
}
if (i2c_debug)
printk("\n");
}
rt_mutex_unlock(&dev->i2c_bus_lock);
return num;
}
/*
* 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;
}
/*
* Helper function to read data blocks from i2c clients with 8 or 16 bit
* address width, 8 bit register width and auto incrementation been activated
*/
static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr,
bool addr_w16, u16 len, u8 *data)
{
int remain = len, rsize, rsize_max, ret;
u8 buf[2];
/* Sanity check */
if (addr + remain > (addr_w16 * 0xff00 + 0xff + 1))
return -EINVAL;
/* Select address */
buf[0] = addr >> 8;
buf[1] = addr & 0xff;
ret = i2c_master_send(&dev->i2c_client[bus], buf + !addr_w16, 1 + addr_w16);
if (ret < 0)
return ret;
/* Read data */
if (dev->board.is_em2800)
rsize_max = 4;
else
rsize_max = 64;
while (remain > 0) {
if (remain > rsize_max)
rsize = rsize_max;
else
rsize = remain;
ret = i2c_master_recv(&dev->i2c_client[bus], data, rsize);
if (ret < 0)
return ret;
remain -= rsize;
data += rsize;
}
return len;
}
static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus,
u8 **eedata, u16 *eedata_len)
{
const u16 len = 256;
/*
* FIXME common length/size for bytes to read, to display, hash
* calculation and returned device dataset. Simplifies the code a lot,
* but we might have to deal with multiple sizes in the future !
*/
int i, err;
struct em28xx_eeprom *dev_config;
u8 buf, *data;
*eedata = NULL;
*eedata_len = 0;
/* EEPROM is always on i2c bus 0 on all known devices. */
dev->i2c_client[bus].addr = 0xa0 >> 1;
/* Check if board has eeprom */
err = i2c_master_recv(&dev->i2c_client[bus], &buf, 0);
if (err < 0) {
em28xx_info("board has no eeprom\n");
return -ENODEV;
}
data = kzalloc(len, GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
/* Read EEPROM content */
err = em28xx_i2c_read_block(dev, bus, 0x0000,
dev->eeprom_addrwidth_16bit,
len, data);
if (err != len) {
em28xx_errdev("failed to read eeprom (err=%d)\n", err);
goto error;
}
/* Display eeprom content */
for (i = 0; i < len; i++) {
if (0 == (i % 16)) {
if (dev->eeprom_addrwidth_16bit)
em28xx_info("i2c eeprom %04x:", i);
else
em28xx_info("i2c eeprom %02x:", i);
}
printk(" %02x", data[i]);
if (15 == (i % 16))
printk("\n");
}
if (dev->eeprom_addrwidth_16bit)
em28xx_info("i2c eeprom %04x: ... (skipped)\n", i);
if (dev->eeprom_addrwidth_16bit &&
data[0] == 0x26 && data[3] == 0x00) {
/* new eeprom format; size 4-64kb */
u16 mc_start;
u16 hwconf_offset;
dev->hash = em28xx_hash_mem(data, len, 32);
mc_start = (data[1] << 8) + 4; /* usually 0x0004 */
em28xx_info("EEPROM ID = %02x %02x %02x %02x, EEPROM hash = 0x%08lx\n",
data[0], data[1], data[2], data[3], dev->hash);
em28xx_info("EEPROM info:\n");
em28xx_info("\tmicrocode start address = 0x%04x, boot configuration = 0x%02x\n",
mc_start, data[2]);
/*
* boot configuration (address 0x0002):
* [0] microcode download speed: 1 = 400 kHz; 0 = 100 kHz
* [1] always selects 12 kb RAM
* [2] USB device speed: 1 = force Full Speed; 0 = auto detect
* [4] 1 = force fast mode and no suspend for device testing
* [5:7] USB PHY tuning registers; determined by device
* characterization
*/
/*
* Read hardware config dataset offset from address
* (microcode start + 46)
*/
err = em28xx_i2c_read_block(dev, bus, mc_start + 46, 1, 2,
data);
if (err != 2) {
em28xx_errdev("failed to read hardware configuration data from eeprom (err=%d)\n",
err);
goto error;
}
/* Calculate hardware config dataset start address */
hwconf_offset = mc_start + data[0] + (data[1] << 8);
/* Read hardware config dataset */
/*
* NOTE: the microcode copy can be multiple pages long, but
* we assume the hardware config dataset is the same as in
* the old eeprom and not longer than 256 bytes.
* tveeprom is currently also limited to 256 bytes.
*/
err = em28xx_i2c_read_block(dev, bus, hwconf_offset, 1, len,
data);
if (err != len) {
em28xx_errdev("failed to read hardware configuration data from eeprom (err=%d)\n",
err);
goto error;
}
/* Verify hardware config dataset */
/* NOTE: not all devices provide this type of dataset */
if (data[0] != 0x1a || data[1] != 0xeb ||
data[2] != 0x67 || data[3] != 0x95) {
em28xx_info("\tno hardware configuration dataset found in eeprom\n");
kfree(data);
return 0;
}
/* TODO: decrypt eeprom data for camera bridges (em25xx, em276x+) */
} else if (!dev->eeprom_addrwidth_16bit &&
data[0] == 0x1a && data[1] == 0xeb &&
data[2] == 0x67 && data[3] == 0x95) {
dev->hash = em28xx_hash_mem(data, len, 32);
em28xx_info("EEPROM ID = %02x %02x %02x %02x, EEPROM hash = 0x%08lx\n",
data[0], data[1], data[2], data[3], dev->hash);
em28xx_info("EEPROM info:\n");
} else {
em28xx_info("unknown eeprom format or eeprom corrupted !\n");
err = -ENODEV;
goto error;
}
*eedata = data;
*eedata_len = len;
dev_config = (void *)*eedata;
switch (le16_to_cpu(dev_config->chip_conf) >> 4 & 0x3) {
case 0:
em28xx_info("\tNo audio on board.\n");
break;
case 1:
em28xx_info("\tAC97 audio (5 sample rates)\n");
break;
case 2:
em28xx_info("\tI2S audio, sample rate=32k\n");
break;
case 3:
em28xx_info("\tI2S audio, 3 sample rates\n");
break;
}
if (le16_to_cpu(dev_config->chip_conf) & 1 << 3)
em28xx_info("\tUSB Remote wakeup capable\n");
if (le16_to_cpu(dev_config->chip_conf) & 1 << 2)
em28xx_info("\tUSB Self power capable\n");
switch (le16_to_cpu(dev_config->chip_conf) & 0x3) {
case 0:
em28xx_info("\t500mA max power\n");
break;
case 1:
em28xx_info("\t400mA max power\n");
break;
case 2:
em28xx_info("\t300mA max power\n");
break;
case 3:
em28xx_info("\t200mA max power\n");
break;
}
em28xx_info("\tTable at offset 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n",
dev_config->string_idx_table,
le16_to_cpu(dev_config->string1),
le16_to_cpu(dev_config->string2),
le16_to_cpu(dev_config->string3));
return 0;
error:
kfree(data);
return err;
}
/* ----------------------------------------------------------- */
/*
* functionality()
*/
static u32 functionality(struct i2c_adapter *i2c_adap)
{
struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data;
if ((i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX) ||
(i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)) {
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
} else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800) {
return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL) &
~I2C_FUNC_SMBUS_WRITE_BLOCK_DATA;
}
WARN(1, "Unknown i2c bus algorithm.\n");
return 0;
}
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] = {
[0x3e >> 1] = "remote IR sensor",
[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, unsigned bus)
{
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[bus].addr = i;
rc = i2c_master_recv(&dev->i2c_client[bus], &buf, 0);
if (rc < 0)
continue;
i2c_devicelist[i] = i;
em28xx_info("found i2c device @ 0x%x on bus %d [%s]\n",
i << 1, bus, i2c_devs[i] ? i2c_devs[i] : "???");
}
if (bus == dev->def_i2c_bus)
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, unsigned bus,
enum em28xx_i2c_algo_type algo_type)
{
int retval;
BUG_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg);
BUG_ON(!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req);
if (bus >= NUM_I2C_BUSES)
return -ENODEV;
dev->i2c_adap[bus] = em28xx_adap_template;
dev->i2c_adap[bus].dev.parent = &dev->udev->dev;
strcpy(dev->i2c_adap[bus].name, dev->name);
dev->i2c_bus[bus].bus = bus;
dev->i2c_bus[bus].algo_type = algo_type;
dev->i2c_bus[bus].dev = dev;
dev->i2c_adap[bus].algo_data = &dev->i2c_bus[bus];
i2c_set_adapdata(&dev->i2c_adap[bus], &dev->v4l2_dev);
retval = i2c_add_adapter(&dev->i2c_adap[bus]);
if (retval < 0) {
em28xx_errdev("%s: i2c_add_adapter failed! retval [%d]\n",
__func__, retval);
return retval;
}
dev->i2c_client[bus] = em28xx_client_template;
dev->i2c_client[bus].adapter = &dev->i2c_adap[bus];
/* Up to now, all eeproms are at bus 0 */
if (!bus) {
retval = em28xx_i2c_eeprom(dev, bus, &dev->eedata, &dev->eedata_len);
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, bus);
return 0;
}
/*
* em28xx_i2c_unregister()
* unregister i2c_bus
*/
int em28xx_i2c_unregister(struct em28xx *dev, unsigned bus)
{
if (bus >= NUM_I2C_BUSES)
return -ENODEV;
i2c_del_adapter(&dev->i2c_adap[bus]);
return 0;
}

729
drivers/media/usb/em28xx/em28xx-input.c Normal file
View File

@@ -0,0 +1,729 @@
/*
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 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;
u32 scancode;
};
struct em28xx_IR {
struct em28xx *dev;
struct rc_dev *rc;
char name[32];
char phys[32];
/* poll decoder */
int polling;
struct delayed_work work;
unsigned int full_code:1;
unsigned int last_readcount;
u64 rc_type;
/* i2c slave address of external device (if used) */
u16 i2c_dev_addr;
int (*get_key_i2c)(struct i2c_client *, u32 *);
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 i2c_client *i2c_dev, u32 *ir_key)
{
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(i2c_dev, &b, 1))
return -EIO;
/* it seems that 0xFE indicates that a button is still hold
down, while 0xff indicates that no button is hold down. */
if (b == 0xff)
return 0;
if (b == 0xfe)
/* keep old data */
return 1;
*ir_key = b;
return 1;
}
static int em28xx_get_key_em_haup(struct i2c_client *i2c_dev, u32 *ir_key)
{
unsigned char buf[2];
u16 code;
int size;
/* poll IR chip */
size = i2c_master_recv(i2c_dev, buf, sizeof(buf));
if (size != 2)
return -EIO;
/* Does eliminate repeated parity code */
if (buf[1] == 0xff)
return 0;
/*
* 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 */
/* return key */
*ir_key = code;
return 1;
}
static int em28xx_get_key_pinnacle_usb_grey(struct i2c_client *i2c_dev,
u32 *ir_key)
{
unsigned char buf[3];
/* poll IR chip */
if (3 != i2c_master_recv(i2c_dev, buf, 3))
return -EIO;
if (buf[0] != 0x00)
return 0;
*ir_key = buf[2]&0x3f;
return 1;
}
static int em28xx_get_key_winfast_usbii_deluxe(struct i2c_client *i2c_dev,
u32 *ir_key)
{
unsigned char subaddr, keydetect, key;
struct i2c_msg msg[] = { { .addr = i2c_dev->addr, .flags = 0, .buf = &subaddr, .len = 1},
{ .addr = i2c_dev->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} };
subaddr = 0x10;
if (2 != i2c_transfer(i2c_dev->adapter, msg, 2))
return -EIO;
if (keydetect == 0x00)
return 0;
subaddr = 0x00;
msg[1].buf = &key;
if (2 != i2c_transfer(i2c_dev->adapter, msg, 2))
return -EIO;
if (key == 0x00)
return 0;
*ir_key = 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/Data (Regs 0x46/0x47) */
poll_result->scancode = msg[1] << 8 | 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)
* Remote Control Data (Reg 0x53-0x55)
*/
switch (ir->rc_type) {
case RC_BIT_RC5:
poll_result->scancode = msg[1] << 8 | msg[2];
break;
case RC_BIT_NEC:
if ((msg[3] ^ msg[4]) != 0xff) /* 32 bits NEC */
poll_result->scancode = (msg[1] << 24) |
(msg[2] << 16) |
(msg[3] << 8) |
msg[4];
else if ((msg[1] ^ msg[2]) != 0xff) /* 24 bits NEC */
poll_result->scancode = (msg[1] << 16) |
(msg[2] << 8) |
msg[3];
else /* Normal NEC */
poll_result->scancode = msg[1] << 8 | msg[3];
break;
case RC_BIT_RC6_0:
poll_result->scancode = msg[1] << 8 | msg[2];
break;
default:
poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) |
(msg[3] << 8) | msg[4];
break;
}
return 0;
}
/**********************************************************
Polling code for em28xx
**********************************************************/
static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir)
{
struct em28xx *dev = ir->dev;
static u32 ir_key;
int rc;
struct i2c_client client;
client.adapter = &ir->dev->i2c_adap[dev->def_i2c_bus];
client.addr = ir->i2c_dev_addr;
rc = ir->get_key_i2c(&client, &ir_key);
if (rc < 0) {
dprintk("ir->get_key_i2c() failed: %d\n", rc);
return rc;
}
if (rc) {
dprintk("%s: keycode = 0x%04x\n", __func__, ir_key);
rc_keydown(ir->rc, ir_key, 0);
}
return 0;
}
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%04x\n", __func__,
poll_result.toggle_bit, poll_result.read_count,
poll_result.scancode);
if (ir->full_code)
rc_keydown(ir->rc,
poll_result.scancode,
poll_result.toggle_bit);
else
rc_keydown(ir->rc,
poll_result.scancode & 0xff,
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);
if (ir->i2c_dev_addr) /* external i2c device */
em28xx_i2c_ir_handle_key(ir);
else /* internal device */
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 em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type)
{
struct em28xx_IR *ir = rc_dev->priv;
struct em28xx *dev = ir->dev;
/* Adjust xclk based on IR table for RC5/NEC tables */
if (*rc_type & RC_BIT_RC5) {
dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
ir->full_code = 1;
*rc_type = RC_BIT_RC5;
} else if (*rc_type & RC_BIT_NEC) {
dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
ir->full_code = 1;
*rc_type = RC_BIT_NEC;
} else if (*rc_type & RC_BIT_UNKNOWN) {
*rc_type = RC_BIT_UNKNOWN;
} else {
*rc_type = ir->rc_type;
return -EINVAL;
}
em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
EM28XX_XCLK_IR_RC5_MODE);
ir->rc_type = *rc_type;
return 0;
}
static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type)
{
struct em28xx_IR *ir = rc_dev->priv;
struct em28xx *dev = ir->dev;
u8 ir_config = EM2874_IR_RC5;
/* Adjust xclk and set type based on IR table for RC5/NEC/RC6 tables */
if (*rc_type & RC_BIT_RC5) {
dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
ir->full_code = 1;
*rc_type = RC_BIT_RC5;
} else if (*rc_type & RC_BIT_NEC) {
dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY;
ir->full_code = 1;
*rc_type = RC_BIT_NEC;
} else if (*rc_type & RC_BIT_RC6_0) {
dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
ir_config = EM2874_IR_RC6_MODE_0;
ir->full_code = 1;
*rc_type = RC_BIT_RC6_0;
} else if (*rc_type & RC_BIT_UNKNOWN) {
*rc_type = RC_BIT_UNKNOWN;
} else {
*rc_type = ir->rc_type;
return -EINVAL;
}
em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1);
em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
EM28XX_XCLK_IR_RC5_MODE);
ir->rc_type = *rc_type;
return 0;
}
static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_type)
{
struct em28xx_IR *ir = rc_dev->priv;
struct em28xx *dev = ir->dev;
/* Setup the proper handler based on the chip */
switch (dev->chip_id) {
case CHIP_ID_EM2860:
case CHIP_ID_EM2883:
return em2860_ir_change_protocol(rc_dev, rc_type);
case CHIP_ID_EM2884:
case CHIP_ID_EM2874:
case CHIP_ID_EM28174:
return em2874_ir_change_protocol(rc_dev, rc_type);
default:
printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n",
dev->chip_id);
return -EINVAL;
}
}
static int em28xx_probe_i2c_ir(struct em28xx *dev)
{
int i = 0;
/* 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. */
const unsigned short addr_list[] = {
0x1f, 0x30, 0x47, I2C_CLIENT_END
};
while (addr_list[i] != I2C_CLIENT_END) {
if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus], addr_list[i]) == 1)
return addr_list[i];
i++;
}
return -ENODEV;
}
/**********************************************************
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;
u64 rc_type;
u16 i2c_rc_dev_addr = 0;
if (dev->board.has_snapshot_button)
em28xx_register_snapshot_button(dev);
if (dev->board.has_ir_i2c) {
i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev);
if (!i2c_rc_dev_addr) {
dev->board.has_ir_i2c = 0;
em28xx_warn("No i2c IR remote control device found.\n");
return -ENODEV;
}
}
if (dev->board.ir_codes == NULL && !dev->board.has_ir_i2c) {
/* 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 error;
/* record handles to ourself */
ir->dev = dev;
dev->ir = ir;
ir->rc = rc;
rc->priv = ir;
rc->open = em28xx_ir_start;
rc->close = em28xx_ir_stop;
if (dev->board.has_ir_i2c) { /* external i2c device */
switch (dev->model) {
case EM2800_BOARD_TERRATEC_CINERGY_200:
case EM2820_BOARD_TERRATEC_CINERGY_250:
rc->map_name = RC_MAP_EM_TERRATEC;
ir->get_key_i2c = em28xx_get_key_terratec;
break;
case EM2820_BOARD_PINNACLE_USB_2:
rc->map_name = RC_MAP_PINNACLE_GREY;
ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey;
break;
case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
rc->map_name = RC_MAP_HAUPPAUGE;
ir->get_key_i2c = em28xx_get_key_em_haup;
rc->allowed_protos = RC_BIT_RC5;
break;
case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE:
rc->map_name = RC_MAP_WINFAST_USBII_DELUXE;
ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe;
break;
default:
err = -ENODEV;
goto error;
}
ir->i2c_dev_addr = i2c_rc_dev_addr;
} else { /* internal device */
switch (dev->chip_id) {
case CHIP_ID_EM2860:
case CHIP_ID_EM2883:
rc->allowed_protos = RC_BIT_RC5 | RC_BIT_NEC;
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;
rc->allowed_protos = RC_BIT_RC5 | RC_BIT_NEC |
RC_BIT_RC6_0;
break;
default:
err = -ENODEV;
goto error;
}
rc->change_protocol = em28xx_ir_change_protocol;
rc->map_name = dev->board.ir_codes;
/* By default, keep protocol field untouched */
rc_type = RC_BIT_UNKNOWN;
err = em28xx_ir_change_protocol(rc, &rc_type);
if (err)
goto error;
}
/* 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->driver_name = MODULE_NAME;
/* all done */
err = rc_register_device(rc);
if (err)
goto error;
return 0;
error:
dev->ir = NULL;
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);

248
drivers/media/usb/em28xx/em28xx-reg.h Normal file
View File

@@ -0,0 +1,248 @@
#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 */
/* 0x82: (always ?) analog */
#define EM28XX_EP_AUDIO 0x83
/* 0x84: digital or analog */
/* 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 /* contrast [0:4] */
#define CONTRAST_DEFAULT 0x10
#define EM28XX_R21_YOFFSET 0x21 /* brightness */ /* signed */
#define BRIGHTNESS_DEFAULT 0x00
#define EM28XX_R22_UVGAIN 0x22 /* saturation [0:4] */
#define SATURATION_DEFAULT 0x10
#define EM28XX_R23_UOFFSET 0x23 /* blue balance */ /* signed */
#define BLUE_BALANCE_DEFAULT 0x00
#define EM28XX_R24_VOFFSET 0x24 /* red balance */ /* signed */
#define RED_BALANCE_DEFAULT 0x00
#define EM28XX_R25_SHARPNESS 0x25 /* sharpness [0:4] */
#define SHARPNESS_DEFAULT 0x00
#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_HVSCALE_MAX 0x3fff /* => 20% */
#define EM28XX_R34_VBI_START_H 0x34
#define EM28XX_R35_VBI_START_V 0x35
/*
* NOTE: the EM276x (and EM25xx, EM277x/8x ?) (camera bridges) use these
* registers for a different unknown purpose.
* => register 0x34 is set to capture width / 16
* => register 0x35 is set to capture height / 16
*/
#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_NEC_NO_PARITY 0x01
#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_EM2765 = 54,
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

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drivers/media/usb/em28xx/em28xx-vbi.c Normal file
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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 int vbi_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct em28xx *dev = vb2_get_drv_priv(vq);
unsigned long size;
if (fmt)
size = fmt->fmt.pix.sizeimage;
else
size = dev->vbi_width * dev->vbi_height * 2;
if (0 == *nbuffers)
*nbuffers = 32;
if (*nbuffers < 2)
*nbuffers = 2;
if (*nbuffers > 32)
*nbuffers = 32;
*nplanes = 1;
sizes[0] = size;
return 0;
}
static int vbi_buffer_prepare(struct vb2_buffer *vb)
{
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
unsigned long size;
size = dev->vbi_width * dev->vbi_height * 2;
if (vb2_plane_size(vb, 0) < size) {
printk(KERN_INFO "%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
return -EINVAL;
}
vb2_set_plane_payload(&buf->vb, 0, size);
return 0;
}
static void
vbi_buffer_queue(struct vb2_buffer *vb)
{
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
unsigned long flags = 0;
buf->mem = vb2_plane_vaddr(vb, 0);
buf->length = vb2_plane_size(vb, 0);
spin_lock_irqsave(&dev->slock, flags);
list_add_tail(&buf->list, &vbiq->active);
spin_unlock_irqrestore(&dev->slock, flags);
}
struct vb2_ops em28xx_vbi_qops = {
.queue_setup = vbi_queue_setup,
.buf_prepare = vbi_buffer_prepare,
.buf_queue = vbi_buffer_queue,
.start_streaming = em28xx_start_analog_streaming,
.stop_streaming = em28xx_stop_vbi_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};

2038
drivers/media/usb/em28xx/em28xx-video.c Normal file
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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>
Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
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/videobuf2-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/ir-kbd-i2c.h>
#include <media/rc-core.h>
#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
#define EM2884_BOARD_TERRATEC_HTC_USB_XS 87
#define EM2884_BOARD_C3TECH_DIGITAL_DUO 88
/* 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
/* max number of I2C buses on em28xx devices */
#define NUM_I2C_BUSES 2
/* isoc transfers: 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_ISOC_PACKETS 64
#define EM28XX_DVB_NUM_ISOC_PACKETS 64
/* bulk transfers: transfer buffer size = packet size * packet multiplier
USB 2.0 spec says bulk packet size is always 512 bytes
*/
#define EM28XX_BULK_PACKET_MULTIPLIER 384
#define EM28XX_DVB_BULK_PACKET_MULTIPLIER 384
#define EM28XX_INTERLACED_DEFAULT 1
/* time in msecs to wait for i2c writes to finish */
#define EM2800_I2C_XFER_TIMEOUT 20
enum em28xx_mode {
EM28XX_SUSPEND,
EM28XX_ANALOG_MODE,
EM28XX_DIGITAL_MODE,
};
struct em28xx;
struct em28xx_usb_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/bulk transfers */
struct urb **urb;
/* transfer buffers for isoc/bulk transfer */
char **transfer_buffer;
};
struct em28xx_usb_ctl {
/* isoc/bulk transfer buffers for analog mode */
struct em28xx_usb_bufs analog_bufs;
/* isoc/bulk transfer buffers for digital mode */
struct em28xx_usb_bufs digital_bufs;
/* Stores already requested buffers */
struct em28xx_buffer *vid_buf;
struct em28xx_buffer *vbi_buf;
/* copy data from URB */
int (*urb_data_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 vb2_buffer vb;
struct list_head list;
void *mem;
unsigned int length;
int top_field;
/* counter to control buffer fill */
unsigned int pos;
/* NOTE; in interlaced mode, this value is reset to zero at
* the start of each new field (not frame !) */
/* pointer to vmalloc memory address in vb */
char *vb_buf;
};
struct em28xx_dmaqueue {
struct list_head active;
wait_queue_head_t wq;
};
/* 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,
EM28XX_OV2640,
};
enum em28xx_adecoder {
EM28XX_NOADECODER = 0,
EM28XX_TVAUDIO,
};
struct em28xx_board {
char *name;
int vchannels;
int tuner_type;
int tuner_addr;
unsigned def_i2c_bus; /* Default I2C bus */
/* 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 {
u8 id[4]; /* 1a eb 67 95 */
__le16 vendor_ID;
__le16 product_ID;
__le16 chip_conf;
__le16 board_conf;
__le16 string1, string2, string3;
u8 string_idx_table;
};
#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 v4l2_fh fh;
struct em28xx *dev;
enum v4l2_buf_type type;
};
enum em28xx_i2c_algo_type {
EM28XX_I2C_ALGO_EM28XX = 0,
EM28XX_I2C_ALGO_EM2800,
EM28XX_I2C_ALGO_EM25XX_BUS_B,
};
struct em28xx_i2c_bus {
struct em28xx *dev;
unsigned bus;
enum em28xx_i2c_algo_type algo_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;
unsigned int is_em25xx:1; /* em25xx/em276x/7x/8x family bridge */
unsigned char disconnected:1; /* device has been diconnected */
int audio_ifnum;
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler ctrl_handler;
struct em28xx_board board;
/* Webcam specific fields */
enum em28xx_sensor em28xx_sensor;
int sensor_xres, sensor_yres;
int sensor_xtal;
/* Progressive (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[NUM_I2C_BUSES];
struct i2c_client i2c_client[NUM_I2C_BUSES];
struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
unsigned char eeprom_addrwidth_16bit:1;
unsigned def_i2c_bus; /* Default I2C bus */
unsigned cur_i2c_bus; /* Current I2C bus */
struct rt_mutex i2c_bus_lock;
/* video for linux */
int users; /* user count for exclusive use */
int streaming_users; /* Number of actively streaming users */
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;
/* capture state tracking */
int capture_type;
unsigned char top_field:1;
int vbi_read;
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;
/* Videobuf2 */
struct vb2_queue vb_vidq;
struct vb2_queue vb_vbiq;
struct mutex vb_queue_lock;
struct mutex vb_vbi_queue_lock;
/* resources in use */
unsigned int resources;
/* eeprom content */
u8 *eedata;
u16 eedata_len;
/* Isoc control struct */
struct em28xx_dmaqueue vidq;
struct em28xx_dmaqueue vbiq;
struct em28xx_usb_ctl usb_ctl;
spinlock_t slock;
unsigned int field_count;
unsigned int vbi_field_count;
/* usb transfer */
struct usb_device *udev; /* the usb device */
u8 analog_ep_isoc; /* address of isoc endpoint for analog */
u8 analog_ep_bulk; /* address of bulk endpoint for analog */
u8 dvb_ep_isoc; /* address of isoc endpoint for DVB */
u8 dvb_ep_bulk; /* address of bulk endpoint for DVB */
int alt; /* alternate setting */
int max_pkt_size; /* max packet size of the selected ep at alt */
int packet_multiplier; /* multiplier for wMaxPacketSize, used for
URB buffer size definition */
int num_alt; /* number of alternative settings */
unsigned int *alt_max_pkt_size_isoc; /* array of isoc wMaxPacketSize */
unsigned int analog_xfer_bulk:1; /* use bulk instead of isoc
transfers for analog */
int dvb_alt_isoc; /* alternate setting for DVB isoc transfers */
unsigned int dvb_max_pkt_size_isoc; /* isoc max packet size of the
selected DVB ep at dvb_alt */
unsigned int dvb_xfer_bulk:1; /* use bulk instead of isoc
transfers 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;
};
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, unsigned bus);
int em28xx_i2c_register(struct em28xx *dev, unsigned bus,
enum em28xx_i2c_algo_type algo_type);
int em28xx_i2c_unregister(struct em28xx *dev, unsigned bus);
/* Provided by em28xx-core.c */
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_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
int num_bufs, int max_pkt_size, int packet_multiplier);
int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
int xfer_bulk,
int num_bufs, int max_pkt_size, int packet_multiplier,
int (*urb_data_copy)
(struct em28xx *dev, struct urb *urb));
void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
void em28xx_stop_urbs(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_vb2_setup(struct em28xx *dev);
int em28xx_register_analog_devices(struct em28xx *dev);
void em28xx_release_analog_resources(struct em28xx *dev);
void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv);
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
int em28xx_stop_vbi_streaming(struct vb2_queue *vq);
extern const struct v4l2_ctrl_ops em28xx_ctrl_ops;
/* Provided by em28xx-cards.c */
extern struct em28xx_board em28xx_boards[];
extern struct usb_device_id em28xx_id_table[];
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 vb2_ops em28xx_vbi_qops;
/* Provided by em28xx-camera.c */
int em28xx_detect_sensor(struct em28xx *dev);
int em28xx_init_camera(struct em28xx *dev);
/* 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);
}
/*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