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V4L/DVB (10692): usbvision: convert to v4l2_device/v4l2_subdev. 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-02-21 18:11:31 -03:00 committed by Mauro Carvalho Chehab
parent ab37319081
commit 1df795370c
4 changed files with 76 additions and 146 deletions
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2
drivers/media/video/usbvision/usbvision-core.c
View File

@ -2633,7 +2633,7 @@ int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
} }
route.input = mode[channel]; route.input = mode[channel];
route.output = 0; route.output = 0;
call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route); call_all(usbvision, video, s_routing, &route);
usbvision_set_audio(usbvision, audio[channel]); usbvision_set_audio(usbvision, audio[channel]);
return 0; return 0;
} }

149
drivers/media/video/usbvision/usbvision-i2c.c
View File

@ -202,72 +202,78 @@ static struct i2c_algorithm usbvision_algo = {
}; };
/*
* registering functions to load algorithms at runtime
*/
static int usbvision_i2c_usb_add_bus(struct i2c_adapter *adap)
{
PDEBUG(DBG_I2C, "I2C debugging is enabled [i2c]");
PDEBUG(DBG_I2C, "ALGO debugging is enabled [i2c]");
/* register new adapter to i2c module... */
adap->algo = &usbvision_algo;
adap->timeout = 100; /* default values, should */
adap->retries = 3; /* be replaced by defines */
i2c_add_adapter(adap);
PDEBUG(DBG_I2C,"i2c bus for %s registered", adap->name);
return 0;
}
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
/* usbvision specific I2C functions */ /* usbvision specific I2C functions */
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
static struct i2c_adapter i2c_adap_template; static struct i2c_adapter i2c_adap_template;
static struct i2c_client i2c_client_template;
int usbvision_i2c_register(struct usb_usbvision *usbvision) int usbvision_i2c_register(struct usb_usbvision *usbvision)
{ {
static unsigned short saa711x_addrs[] = {
0x4a >> 1, 0x48 >> 1, /* SAA7111, SAA7111A and SAA7113 */
0x42 >> 1, 0x40 >> 1, /* SAA7114, SAA7115 and SAA7118 */
I2C_CLIENT_END };
memcpy(&usbvision->i2c_adap, &i2c_adap_template, memcpy(&usbvision->i2c_adap, &i2c_adap_template,
sizeof(struct i2c_adapter)); sizeof(struct i2c_adapter));
memcpy(&usbvision->i2c_client, &i2c_client_template,
sizeof(struct i2c_client));
sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name), sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
" #%d", usbvision->vdev->num); " #%d", usbvision->vdev->num);
PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name); PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name);
usbvision->i2c_adap.dev.parent = &usbvision->dev->dev; usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
i2c_set_adapdata(&usbvision->i2c_adap, usbvision); i2c_set_adapdata(&usbvision->i2c_adap, &usbvision->v4l2_dev);
i2c_set_clientdata(&usbvision->i2c_client, usbvision);
usbvision->i2c_client.adapter = &usbvision->i2c_adap;
if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) { if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
printk(KERN_ERR "usbvision_register: can't write reg\n"); printk(KERN_ERR "usbvision_register: can't write reg\n");
return -EBUSY; return -EBUSY;
} }
#ifdef CONFIG_MODULES PDEBUG(DBG_I2C, "I2C debugging is enabled [i2c]");
PDEBUG(DBG_I2C, "ALGO debugging is enabled [i2c]");
/* register new adapter to i2c module... */
usbvision->i2c_adap.algo = &usbvision_algo;
usbvision->i2c_adap.timeout = 100; /* default values, should */
usbvision->i2c_adap.retries = 3; /* be replaced by defines */
i2c_add_adapter(&usbvision->i2c_adap);
PDEBUG(DBG_I2C, "i2c bus for %s registered", usbvision->i2c_adap.name);
/* Request the load of the i2c modules we need */ /* Request the load of the i2c modules we need */
switch (usbvision_device_data[usbvision->DevModel].Codec) { switch (usbvision_device_data[usbvision->DevModel].Codec) {
case CODEC_SAA7113: case CODEC_SAA7113:
request_module("saa7115");
break;
case CODEC_SAA7111: case CODEC_SAA7111:
request_module("saa7115"); v4l2_i2c_new_probed_subdev(&usbvision->i2c_adap, "saa7115",
"saa7115_auto", saa711x_addrs);
break; break;
} }
if (usbvision_device_data[usbvision->DevModel].Tuner == 1) { if (usbvision_device_data[usbvision->DevModel].Tuner == 1) {
request_module("tuner"); struct v4l2_subdev *sd;
} enum v4l2_i2c_tuner_type type;
#endif struct tuner_setup tun_setup;
return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap); sd = v4l2_i2c_new_probed_subdev(&usbvision->i2c_adap, "tuner",
"tuner", v4l2_i2c_tuner_addrs(ADDRS_DEMOD));
/* depending on whether we found a demod or not, select
the tuner type. */
type = sd ? ADDRS_TV_WITH_DEMOD : ADDRS_TV;
sd = v4l2_i2c_new_probed_subdev(&usbvision->i2c_adap, "tuner",
"tuner", v4l2_i2c_tuner_addrs(type));
if (usbvision->tuner_type != -1) {
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = usbvision->tuner_type;
tun_setup.addr = v4l2_i2c_subdev_addr(sd);
call_all(usbvision, tuner, s_type_addr, &tun_setup);
}
}
return 0;
} }
int usbvision_i2c_unregister(struct usb_usbvision *usbvision) int usbvision_i2c_unregister(struct usb_usbvision *usbvision)
@ -280,67 +286,6 @@ int usbvision_i2c_unregister(struct usb_usbvision *usbvision)
return 0; return 0;
} }
void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
void *arg)
{
i2c_clients_command(&usbvision->i2c_adap, cmd, arg);
}
static int attach_inform(struct i2c_client *client)
{
struct usb_usbvision *usbvision;
usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
switch (client->addr << 1) {
case 0x42 << 1:
case 0x43 << 1:
case 0x4a << 1:
case 0x4b << 1:
PDEBUG(DBG_I2C,"attach_inform: tda9887 detected.");
break;
case 0x42:
PDEBUG(DBG_I2C,"attach_inform: saa7114 detected.");
break;
case 0x4a:
PDEBUG(DBG_I2C,"attach_inform: saa7113 detected.");
break;
case 0x48:
PDEBUG(DBG_I2C,"attach_inform: saa7111 detected.");
break;
case 0xa0:
PDEBUG(DBG_I2C,"attach_inform: eeprom detected.");
break;
default:
{
struct tuner_setup tun_setup;
PDEBUG(DBG_I2C,"attach inform: detected I2C address %x", client->addr << 1);
usbvision->tuner_addr = client->addr;
if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) {
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = usbvision->tuner_type;
tun_setup.addr = usbvision->tuner_addr;
call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
}
}
break;
}
return 0;
}
static int detach_inform(struct i2c_client *client)
{
struct usb_usbvision *usbvision;
usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
PDEBUG(DBG_I2C,"usbvision[%d] detaches %s", usbvision->nr, client->name);
return 0;
}
static int static int
usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr, usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
char *buf, short len) char *buf, short len)
@ -513,14 +458,6 @@ static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char add
static struct i2c_adapter i2c_adap_template = { static struct i2c_adapter i2c_adap_template = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.name = "usbvision", .name = "usbvision",
.id = I2C_HW_B_BT848, /* FIXME */
.client_register = attach_inform,
.client_unregister = detach_inform,
.class = I2C_CLASS_TV_ANALOG,
};
static struct i2c_client i2c_client_template = {
.name = "usbvision internal",
}; };
/* /*

63
drivers/media/video/usbvision/usbvision-video.c
View File

@ -212,7 +212,7 @@ static ssize_t show_hue(struct device *cd,
ctrl.id = V4L2_CID_HUE; ctrl.id = V4L2_CID_HUE;
ctrl.value = 0; ctrl.value = 0;
if(usbvision->user) if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); call_all(usbvision, core, g_ctrl, &ctrl);
return sprintf(buf, "%d\n", ctrl.value); return sprintf(buf, "%d\n", ctrl.value);
} }
static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
@ -227,7 +227,7 @@ static ssize_t show_contrast(struct device *cd,
ctrl.id = V4L2_CID_CONTRAST; ctrl.id = V4L2_CID_CONTRAST;
ctrl.value = 0; ctrl.value = 0;
if(usbvision->user) if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); call_all(usbvision, core, g_ctrl, &ctrl);
return sprintf(buf, "%d\n", ctrl.value); return sprintf(buf, "%d\n", ctrl.value);
} }
static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
@ -242,7 +242,7 @@ static ssize_t show_brightness(struct device *cd,
ctrl.id = V4L2_CID_BRIGHTNESS; ctrl.id = V4L2_CID_BRIGHTNESS;
ctrl.value = 0; ctrl.value = 0;
if(usbvision->user) if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); call_all(usbvision, core, g_ctrl, &ctrl);
return sprintf(buf, "%d\n", ctrl.value); return sprintf(buf, "%d\n", ctrl.value);
} }
static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
@ -257,7 +257,7 @@ static ssize_t show_saturation(struct device *cd,
ctrl.id = V4L2_CID_SATURATION; ctrl.id = V4L2_CID_SATURATION;
ctrl.value = 0; ctrl.value = 0;
if(usbvision->user) if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); call_all(usbvision, core, g_ctrl, &ctrl);
return sprintf(buf, "%d\n", ctrl.value); return sprintf(buf, "%d\n", ctrl.value);
} }
static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
@ -622,8 +622,7 @@ static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
usbvision->tvnormId=*id; usbvision->tvnormId=*id;
mutex_lock(&usbvision->lock); mutex_lock(&usbvision->lock);
call_i2c_clients(usbvision, VIDIOC_S_STD, call_all(usbvision, tuner, s_std, usbvision->tvnormId);
&usbvision->tvnormId);
mutex_unlock(&usbvision->lock); mutex_unlock(&usbvision->lock);
/* propagate the change to the decoder */ /* propagate the change to the decoder */
usbvision_muxsel(usbvision, usbvision->ctl_input); usbvision_muxsel(usbvision, usbvision->ctl_input);
@ -645,7 +644,7 @@ static int vidioc_g_tuner (struct file *file, void *priv,
strcpy(vt->name, "Television"); strcpy(vt->name, "Television");
} }
/* Let clients fill in the remainder of this struct */ /* Let clients fill in the remainder of this struct */
call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt); call_all(usbvision, tuner, g_tuner, vt);
return 0; return 0;
} }
@ -659,7 +658,7 @@ static int vidioc_s_tuner (struct file *file, void *priv,
if (!usbvision->have_tuner || vt->index) if (!usbvision->have_tuner || vt->index)
return -EINVAL; return -EINVAL;
/* let clients handle this */ /* let clients handle this */
call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt); call_all(usbvision, tuner, s_tuner, vt);
return 0; return 0;
} }
@ -690,7 +689,7 @@ static int vidioc_s_frequency (struct file *file, void *priv,
return -EINVAL; return -EINVAL;
usbvision->freq = freq->frequency; usbvision->freq = freq->frequency;
call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq); call_all(usbvision, tuner, s_frequency, freq);
return 0; return 0;
} }
@ -728,7 +727,7 @@ static int vidioc_queryctrl (struct file *file, void *priv,
memset(ctrl,0,sizeof(*ctrl)); memset(ctrl,0,sizeof(*ctrl));
ctrl->id=id; ctrl->id=id;
call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl); call_all(usbvision, core, queryctrl, ctrl);
if (!ctrl->type) if (!ctrl->type)
return -EINVAL; return -EINVAL;
@ -740,7 +739,7 @@ static int vidioc_g_ctrl (struct file *file, void *priv,
struct v4l2_control *ctrl) struct v4l2_control *ctrl)
{ {
struct usb_usbvision *usbvision = video_drvdata(file); struct usb_usbvision *usbvision = video_drvdata(file);
call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl); call_all(usbvision, core, g_ctrl, ctrl);
return 0; return 0;
} }
@ -749,7 +748,7 @@ static int vidioc_s_ctrl (struct file *file, void *priv,
struct v4l2_control *ctrl) struct v4l2_control *ctrl)
{ {
struct usb_usbvision *usbvision = video_drvdata(file); struct usb_usbvision *usbvision = video_drvdata(file);
call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl); call_all(usbvision, core, s_ctrl, ctrl);
return 0; return 0;
} }
@ -900,10 +899,9 @@ static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{ {
struct usb_usbvision *usbvision = video_drvdata(file); struct usb_usbvision *usbvision = video_drvdata(file);
int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
usbvision->streaming = Stream_On; usbvision->streaming = Stream_On;
call_i2c_clients(usbvision,VIDIOC_STREAMON , &b); call_all(usbvision, video, s_stream, 1);
return 0; return 0;
} }
@ -912,7 +910,6 @@ static int vidioc_streamoff(struct file *file,
void *priv, enum v4l2_buf_type type) void *priv, enum v4l2_buf_type type)
{ {
struct usb_usbvision *usbvision = video_drvdata(file); struct usb_usbvision *usbvision = video_drvdata(file);
int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL; return -EINVAL;
@ -920,7 +917,7 @@ static int vidioc_streamoff(struct file *file,
if(usbvision->streaming == Stream_On) { if(usbvision->streaming == Stream_On) {
usbvision_stream_interrupt(usbvision); usbvision_stream_interrupt(usbvision);
/* Stop all video streamings */ /* Stop all video streamings */
call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b); call_all(usbvision, video, s_stream, 0);
} }
usbvision_empty_framequeues(usbvision); usbvision_empty_framequeues(usbvision);
@ -1043,7 +1040,7 @@ static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
if(usbvision->streaming != Stream_On) { if(usbvision->streaming != Stream_On) {
/* no stream is running, make it running ! */ /* no stream is running, make it running ! */
usbvision->streaming = Stream_On; usbvision->streaming = Stream_On;
call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL); call_all(usbvision, video, s_stream, 1);
} }
/* Then, enqueue as many frames as possible /* Then, enqueue as many frames as possible
@ -1214,7 +1211,7 @@ static int usbvision_radio_open(struct file *file)
// If so far no errors then we shall start the radio // If so far no errors then we shall start the radio
usbvision->radio = 1; usbvision->radio = 1;
call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type); call_all(usbvision, tuner, s_radio);
usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
usbvision->user++; usbvision->user++;
} }
@ -1427,7 +1424,7 @@ static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
} }
*vdev = *vdev_template; *vdev = *vdev_template;
// vdev->minor = -1; // vdev->minor = -1;
vdev->parent = &usb_dev->dev; vdev->v4l2_dev = &usbvision->v4l2_dev;
snprintf(vdev->name, sizeof(vdev->name), "%s", name); snprintf(vdev->name, sizeof(vdev->name), "%s", name);
video_set_drvdata(vdev, usbvision); video_set_drvdata(vdev, usbvision);
return vdev; return vdev;
@ -1548,33 +1545,30 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
{ {
struct usb_usbvision *usbvision; struct usb_usbvision *usbvision;
if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
NULL) { if (usbvision == NULL)
goto err_exit; return NULL;
}
usbvision->dev = dev; usbvision->dev = dev;
if (v4l2_device_register(&dev->dev, &usbvision->v4l2_dev))
goto err_free;
mutex_init(&usbvision->lock); /* available */ mutex_init(&usbvision->lock); /* available */
// prepare control urb for control messages during interrupts // prepare control urb for control messages during interrupts
usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
if (usbvision->ctrlUrb == NULL) { if (usbvision->ctrlUrb == NULL)
goto err_exit; goto err_unreg;
}
init_waitqueue_head(&usbvision->ctrlUrb_wq); init_waitqueue_head(&usbvision->ctrlUrb_wq);
usbvision_init_powerOffTimer(usbvision); usbvision_init_powerOffTimer(usbvision);
return usbvision; return usbvision;
err_exit: err_unreg:
if (usbvision && usbvision->ctrlUrb) { v4l2_device_unregister(&usbvision->v4l2_dev);
usb_free_urb(usbvision->ctrlUrb); err_free:
} kfree(usbvision);
if (usbvision) {
kfree(usbvision);
}
return NULL; return NULL;
} }
@ -1604,6 +1598,7 @@ static void usbvision_release(struct usb_usbvision *usbvision)
usb_free_urb(usbvision->ctrlUrb); usb_free_urb(usbvision->ctrlUrb);
} }
v4l2_device_unregister(&usbvision->v4l2_dev);
kfree(usbvision); kfree(usbvision);
PDEBUG(DBG_PROBE, "success"); PDEBUG(DBG_PROBE, "success");
@ -1739,8 +1734,6 @@ static int __devinit usbvision_probe(struct usb_interface *intf,
usbvision->tuner_type = usbvision_device_data[model].TunerType; usbvision->tuner_type = usbvision_device_data[model].TunerType;
} }
usbvision->tuner_addr = ADDR_UNSET;
usbvision->DevModel = model; usbvision->DevModel = model;
usbvision->remove_pending = 0; usbvision->remove_pending = 0;
usbvision->iface = ifnum; usbvision->iface = ifnum;

8
drivers/media/video/usbvision/usbvision.h
View File

@ -35,7 +35,7 @@
#include <linux/usb.h> #include <linux/usb.h>
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/mutex.h> #include <linux/mutex.h>
#include <media/v4l2-common.h> #include <media/v4l2-device.h>
#include <media/tuner.h> #include <media/tuner.h>
#include <linux/videodev2.h> #include <linux/videodev2.h>
@ -357,13 +357,13 @@ extern struct usbvision_device_data_st usbvision_device_data[];
extern struct usb_device_id usbvision_table[]; extern struct usb_device_id usbvision_table[];
struct usb_usbvision { struct usb_usbvision {
struct v4l2_device v4l2_dev;
struct video_device *vdev; /* Video Device */ struct video_device *vdev; /* Video Device */
struct video_device *rdev; /* Radio Device */ struct video_device *rdev; /* Radio Device */
struct video_device *vbi; /* VBI Device */ struct video_device *vbi; /* VBI Device */
/* i2c Declaration Section*/ /* i2c Declaration Section*/
struct i2c_adapter i2c_adap; struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
struct urb *ctrlUrb; struct urb *ctrlUrb;
unsigned char ctrlUrbBuffer[8]; unsigned char ctrlUrbBuffer[8];
@ -374,7 +374,6 @@ struct usb_usbvision {
/* configuration part */ /* configuration part */
int have_tuner; int have_tuner;
int tuner_type; int tuner_type;
int tuner_addr;
int bridgeType; // NT1003, NT1004, NT1005 int bridgeType; // NT1003, NT1004, NT1005
int radio; int radio;
int video_inputs; // # of inputs int video_inputs; // # of inputs
@ -464,6 +463,8 @@ struct usb_usbvision {
int ComprBlockTypes[4]; int ComprBlockTypes[4];
}; };
#define call_all(usbvision, o, f, args...) \
v4l2_device_call_all(&usbvision->v4l2_dev, 0, o, f, ##args)
/* --------------------------------------------------------------- */ /* --------------------------------------------------------------- */
/* defined in usbvision-i2c.c */ /* defined in usbvision-i2c.c */
@ -475,7 +476,6 @@ struct usb_usbvision {
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
int usbvision_i2c_register(struct usb_usbvision *usbvision); int usbvision_i2c_register(struct usb_usbvision *usbvision);
int usbvision_i2c_unregister(struct usb_usbvision *usbvision); int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
/* defined in usbvision-core.c */ /* defined in usbvision-core.c */
int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg); int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);