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[PATCH] USB: ET61X[12]51 driver updates 

USB: ET61X[12]51 driver updates

Changes: + new, - removed, * cleanup, @ bugfix

@ Fix stream_interrupt()
@ Fix vidioc_enum_input() and split vidioc_gs_input()
@ Need usb_get|put_dev() when disconnecting, if the device is open
* Use wait_event_interruptible_timeout() instead of wait_event_interruptible()
  when waiting for video frames
* replace wake_up_interruptible(&wait_stream) with wake_up(&wait_stream)
* Cleanups and updates in the documentation
* Use mutexes instead of semaphores
+ Use per-device sensor structures
+ Add support for PAS202BCA image sensors
+ Add frame_timeout module parameter

Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Luca Risolia 2006-02-25 06:54:18 +00:00 committed by Greg Kroah-Hartman
parent 2ffab02fea
commit ccad7789d5
5 changed files with 213 additions and 161 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Documentation/usb/et61x251.txt
View File

@ -176,6 +176,14 @@ Description: Force the application to unmap previously mapped buffer memory
1 = force memory unmapping (save memory)
Default: 0
-------------------------------------------------------------------------------
Name: frame_timeout
Type: uint array (min = 0, max = 64)
Syntax: <n[,...]>
Description: Timeout for a video frame in seconds. This parameter is
specific for each detected camera. This parameter can be
changed at runtime thanks to the /sys filesystem interface.
Default: 2
-------------------------------------------------------------------------------
Name: debug
Type: ushort
Syntax: <n>
@ -266,7 +274,7 @@ the V4L2 interface.
10. Notes for V4L2 application developers
========================================
=========================================
This driver follows the V4L2 API specifications. In particular, it enforces two
rules:

28
drivers/usb/media/et61x251.h
View File

@ -33,7 +33,9 @@
#include <linux/types.h>
#include <linux/param.h>
#include <linux/rwsem.h>
#include <asm/semaphore.h>
#include <linux/mutex.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include "et61x251_sensor.h"
@ -51,6 +53,7 @@
#define ET61X251_ALTERNATE_SETTING 13
#define ET61X251_URB_TIMEOUT msecs_to_jiffies(2 * ET61X251_ISO_PACKETS)
#define ET61X251_CTRL_TIMEOUT 100
#define ET61X251_FRAME_TIMEOUT 2
/*****************************************************************************/
@ -127,15 +130,16 @@ struct et61x251_sysfs_attr {
struct et61x251_module_param {
u8 force_munmap;
u16 frame_timeout;
};
static DECLARE_MUTEX(et61x251_sysfs_lock);
static DEFINE_MUTEX(et61x251_sysfs_lock);
static DECLARE_RWSEM(et61x251_disconnect);
struct et61x251_device {
struct video_device* v4ldev;
struct et61x251_sensor* sensor;
struct et61x251_sensor sensor;
struct usb_device* usbdev;
struct urb* urb[ET61X251_URBS];
@ -157,19 +161,28 @@ struct et61x251_device {
enum et61x251_dev_state state;
u8 users;
struct semaphore dev_sem, fileop_sem;
struct mutex dev_mutex, fileop_mutex;
spinlock_t queue_lock;
wait_queue_head_t open, wait_frame, wait_stream;
};
/*****************************************************************************/
struct et61x251_device*
et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id)
{
if (usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id))
return cam;
return NULL;
}
void
et61x251_attach_sensor(struct et61x251_device* cam,
struct et61x251_sensor* sensor)
{
cam->sensor = sensor;
cam->sensor->usbdev = cam->usbdev;
memcpy(&cam->sensor, sensor, sizeof(struct et61x251_sensor));
}
/*****************************************************************************/
@ -212,7 +225,8 @@ do { \
#undef PDBG
#define PDBG(fmt, args...) \
dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
__FUNCTION__, __LINE__ , ## args)
#undef PDBGG
#define PDBGG(fmt, args...) do {;} while(0) /* placeholder */

321
drivers/usb/media/et61x251_core.c
View File

@ -25,11 +25,9 @@
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/stddef.h>
#include <linux/compiler.h>
#include <linux/ioctl.h>
#include <linux/poll.h>
@ -50,8 +48,8 @@
#define ET61X251_MODULE_AUTHOR "(C) 2006 Luca Risolia"
#define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>"
#define ET61X251_MODULE_LICENSE "GPL"
#define ET61X251_MODULE_VERSION "1:1.01"
#define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 1)
#define ET61X251_MODULE_VERSION "1:1.02"
#define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 2)
/*****************************************************************************/
@ -90,6 +88,16 @@ MODULE_PARM_DESC(force_munmap,
"\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"."
"\n");
static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] =
ET61X251_FRAME_TIMEOUT};
module_param_array(frame_timeout, uint, NULL, 0644);
MODULE_PARM_DESC(frame_timeout,
"\n<n[,...]> Timeout for a video frame in seconds."
"\nThis parameter is specific for each detected camera."
"\nDefault value is "
__MODULE_STRING(ET61X251_FRAME_TIMEOUT)"."
"\n");
#ifdef ET61X251_DEBUG
static unsigned short debug = ET61X251_DEBUG_LEVEL;
module_param(debug, ushort, 0644);
@ -111,8 +119,8 @@ static u32
et61x251_request_buffers(struct et61x251_device* cam, u32 count,
enum et61x251_io_method io)
{
struct v4l2_pix_format* p = &(cam->sensor->pix_format);
struct v4l2_rect* r = &(cam->sensor->cropcap.bounds);
struct v4l2_pix_format* p = &(cam->sensor.pix_format);
struct v4l2_rect* r = &(cam->sensor.cropcap.bounds);
const size_t imagesize = cam->module_param.force_munmap ||
io == IO_READ ?
(p->width * p->height * p->priv) / 8 :
@ -268,8 +276,8 @@ et61x251_i2c_try_read(struct et61x251_device* cam,
int err = 0, res;
data[0] = address;
data[1] = cam->sensor->i2c_slave_id;
data[2] = cam->sensor->rsta | 0x10;
data[1] = cam->sensor.i2c_slave_id;
data[2] = cam->sensor.rsta | 0x10;
data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02);
res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT);
@ -301,8 +309,8 @@ et61x251_i2c_try_write(struct et61x251_device* cam,
int err = 0, res;
data[0] = address;
data[1] = cam->sensor->i2c_slave_id;
data[2] = cam->sensor->rsta | 0x12;
data[1] = cam->sensor.i2c_slave_id;
data[2] = cam->sensor.rsta | 0x12;
res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT);
if (res < 0)
@ -334,9 +342,6 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
u8* data = cam->control_buffer;
int err = 0, res;
if (!cam->sensor)
return -1;
data[0] = data2;
data[1] = data3;
data[2] = data4;
@ -350,8 +355,8 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
err += res;
data[0] = address;
data[1] = cam->sensor->i2c_slave_id;
data[2] = cam->sensor->rsta | 0x02 | (n << 4);
data[1] = cam->sensor.i2c_slave_id;
data[2] = cam->sensor.rsta | 0x02 | (n << 4);
res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41,
0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT);
if (res < 0)
@ -364,11 +369,11 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
if (res < 0)
err += res;
err += et61x251_i2c_wait(cam, cam->sensor);
err += et61x251_i2c_wait(cam, &cam->sensor);
if (err)
DBG(3, "I2C raw write failed for %s image sensor",
cam->sensor->name);
cam->sensor.name);
PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, "
"data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X,"
@ -382,19 +387,13 @@ et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2,
int et61x251_i2c_read(struct et61x251_device* cam, u8 address)
{
if (!cam->sensor)
return -1;
return et61x251_i2c_try_read(cam, cam->sensor, address);
return et61x251_i2c_try_read(cam, &cam->sensor, address);
}
int et61x251_i2c_write(struct et61x251_device* cam, u8 address, u8 value)
{
if (!cam->sensor)
return -1;
return et61x251_i2c_try_write(cam, cam->sensor, address, value);
return et61x251_i2c_try_write(cam, &cam->sensor, address, value);
}
/*****************************************************************************/
@ -417,7 +416,7 @@ static void et61x251_urb_complete(struct urb *urb, struct pt_regs* regs)
if ((*f))
(*f)->state = F_QUEUED;
DBG(3, "Stream interrupted");
wake_up_interruptible(&cam->wait_stream);
wake_up(&cam->wait_stream);
}
if (cam->state & DEV_DISCONNECTED)
@ -435,9 +434,9 @@ static void et61x251_urb_complete(struct urb *urb, struct pt_regs* regs)
(*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t,
frame);
imagesize = (cam->sensor->pix_format.width *
cam->sensor->pix_format.height *
cam->sensor->pix_format.priv) / 8;
imagesize = (cam->sensor.pix_format.width *
cam->sensor.pix_format.height *
cam->sensor.pix_format.priv) / 8;
for (i = 0; i < urb->number_of_packets; i++) {
unsigned int len, status;
@ -476,7 +475,7 @@ start_of_frame:
if ((*f)->state == F_GRABBING) {
if (sof && (*f)->buf.bytesused) {
if (cam->sensor->pix_format.pixelformat ==
if (cam->sensor.pix_format.pixelformat ==
V4L2_PIX_FMT_ET61X251)
goto end_of_frame;
else {
@ -521,7 +520,7 @@ end_of_frame:
goto resubmit_urb;
if (sof &&
cam->sensor->pix_format.pixelformat ==
cam->sensor.pix_format.pixelformat ==
V4L2_PIX_FMT_ET61X251)
goto start_of_frame;
}
@ -650,21 +649,21 @@ static int et61x251_stop_transfer(struct et61x251_device* cam)
static int et61x251_stream_interrupt(struct et61x251_device* cam)
{
int err = 0;
long timeout;
cam->stream = STREAM_INTERRUPT;
err = wait_event_timeout(cam->wait_stream,
(cam->stream == STREAM_OFF) ||
(cam->state & DEV_DISCONNECTED),
ET61X251_URB_TIMEOUT);
timeout = wait_event_timeout(cam->wait_stream,
(cam->stream == STREAM_OFF) ||
(cam->state & DEV_DISCONNECTED),
ET61X251_URB_TIMEOUT);
if (cam->state & DEV_DISCONNECTED)
return -ENODEV;
else if (err) {
else if (cam->stream != STREAM_OFF) {
cam->state |= DEV_MISCONFIGURED;
DBG(1, "URB timeout reached. The camera is misconfigured. To "
"use it, close and open /dev/video%d again.",
cam->v4ldev->minor);
return err;
return -EIO;
}
return 0;
@ -709,18 +708,18 @@ static ssize_t et61x251_show_reg(struct class_device* cd, char* buf)
struct et61x251_device* cam;
ssize_t count;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
count = sprintf(buf, "%u\n", cam->sysfs.reg);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -733,18 +732,18 @@ et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
u8 index;
ssize_t count;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
index = et61x251_strtou8(buf, len, &count);
if (index > 0x8e || !count) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EINVAL;
}
@ -753,7 +752,7 @@ et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg);
DBG(3, "Written bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -765,17 +764,17 @@ static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
ssize_t count;
int val;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EIO;
}
@ -783,7 +782,7 @@ static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
DBG(3, "Read bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -797,24 +796,24 @@ et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
ssize_t count;
int err;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
value = et61x251_strtou8(buf, len, &count);
if (!count) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EINVAL;
}
err = et61x251_write_reg(cam, value, cam->sysfs.reg);
if (err) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EIO;
}
@ -822,7 +821,7 @@ et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
cam->sysfs.reg, value);
DBG(3, "Written bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -833,12 +832,12 @@ static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
struct et61x251_device* cam;
ssize_t count;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
@ -846,7 +845,7 @@ static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
DBG(3, "Read bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -859,18 +858,18 @@ et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
u8 index;
ssize_t count;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
index = et61x251_strtou8(buf, len, &count);
if (!count) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EINVAL;
}
@ -879,7 +878,7 @@ et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg);
DBG(3, "Written bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -891,22 +890,22 @@ static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
ssize_t count;
int val;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
if (!(cam->sensor->sysfs_ops & ET61X251_I2C_READ)) {
up(&et61x251_sysfs_lock);
if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) {
mutex_unlock(&et61x251_sysfs_lock);
return -ENOSYS;
}
if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EIO;
}
@ -914,7 +913,7 @@ static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
DBG(3, "Read bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -928,29 +927,29 @@ et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
ssize_t count;
int err;
if (down_interruptible(&et61x251_sysfs_lock))
if (mutex_lock_interruptible(&et61x251_sysfs_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(to_video_device(cd));
if (!cam) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -ENODEV;
}
if (!(cam->sensor->sysfs_ops & ET61X251_I2C_READ)) {
up(&et61x251_sysfs_lock);
if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) {
mutex_unlock(&et61x251_sysfs_lock);
return -ENOSYS;
}
value = et61x251_strtou8(buf, len, &count);
if (!count) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EINVAL;
}
err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value);
if (err) {
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return -EIO;
}
@ -958,7 +957,7 @@ et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
cam->sysfs.i2c_reg, value);
DBG(3, "Written bytes: %zd", count);
up(&et61x251_sysfs_lock);
mutex_unlock(&et61x251_sysfs_lock);
return count;
}
@ -980,7 +979,7 @@ static void et61x251_create_sysfs(struct et61x251_device* cam)
video_device_create_file(v4ldev, &class_device_attr_reg);
video_device_create_file(v4ldev, &class_device_attr_val);
if (cam->sensor && cam->sensor->sysfs_ops) {
if (cam->sensor.sysfs_ops) {
video_device_create_file(v4ldev, &class_device_attr_i2c_reg);
video_device_create_file(v4ldev, &class_device_attr_i2c_val);
}
@ -1048,7 +1047,7 @@ static int et61x251_set_scale(struct et61x251_device* cam, u8 scale)
static int
et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left +
s->active_pixel.left),
fmw_sy = (u16)(rect->top - s->cropcap.bounds.top +
@ -1076,7 +1075,7 @@ et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect)
static int et61x251_init(struct et61x251_device* cam)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_control ctrl;
struct v4l2_queryctrl *qctrl;
struct v4l2_rect* rect;
@ -1143,7 +1142,7 @@ static int et61x251_init(struct et61x251_device* cam)
}
if (!(cam->state & DEV_INITIALIZED)) {
init_MUTEX(&cam->fileop_sem);
mutex_init(&cam->fileop_mutex);
spin_lock_init(&cam->queue_lock);
init_waitqueue_head(&cam->wait_frame);
init_waitqueue_head(&cam->wait_stream);
@ -1161,13 +1160,15 @@ static int et61x251_init(struct et61x251_device* cam)
static void et61x251_release_resources(struct et61x251_device* cam)
{
down(&et61x251_sysfs_lock);
mutex_lock(&et61x251_sysfs_lock);
DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
video_set_drvdata(cam->v4ldev, NULL);
video_unregister_device(cam->v4ldev);
up(&et61x251_sysfs_lock);
usb_put_dev(cam->usbdev);
mutex_unlock(&et61x251_sysfs_lock);
kfree(cam->control_buffer);
}
@ -1188,7 +1189,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
cam = video_get_drvdata(video_devdata(filp));
if (down_interruptible(&cam->dev_sem)) {
if (mutex_lock_interruptible(&cam->dev_mutex)) {
up_read(&et61x251_disconnect);
return -ERESTARTSYS;
}
@ -1200,7 +1201,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
err = -EWOULDBLOCK;
goto out;
}
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
err = wait_event_interruptible_exclusive(cam->open,
cam->state & DEV_DISCONNECTED
|| !cam->users);
@ -1212,7 +1213,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
up_read(&et61x251_disconnect);
return -ENODEV;
}
down(&cam->dev_sem);
mutex_lock(&cam->dev_mutex);
}
@ -1240,7 +1241,7 @@ static int et61x251_open(struct inode* inode, struct file* filp)
DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
out:
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
up_read(&et61x251_disconnect);
return err;
}
@ -1250,7 +1251,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
{
struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
down(&cam->dev_sem); /* prevent disconnect() to be called */
mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
et61x251_stop_transfer(cam);
@ -1258,7 +1259,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
if (cam->state & DEV_DISCONNECTED) {
et61x251_release_resources(cam);
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
kfree(cam);
return 0;
}
@ -1268,7 +1269,7 @@ static int et61x251_release(struct inode* inode, struct file* filp)
DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
return 0;
}
@ -1281,28 +1282,29 @@ et61x251_read(struct file* filp, char __user * buf,
struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
struct et61x251_frame_t* f, * i;
unsigned long lock_flags;
long timeout;
int err = 0;
if (down_interruptible(&cam->fileop_sem))
if (mutex_lock_interruptible(&cam->fileop_mutex))
return -ERESTARTSYS;
if (cam->state & DEV_DISCONNECTED) {
DBG(1, "Device not present");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -ENODEV;
}
if (cam->state & DEV_MISCONFIGURED) {
DBG(1, "The camera is misconfigured. Close and open it "
"again.");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EIO;
}
if (cam->io == IO_MMAP) {
DBG(3, "Close and open the device again to choose the read "
"method");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EINVAL;
}
@ -1310,7 +1312,7 @@ et61x251_read(struct file* filp, char __user * buf,
if (!et61x251_request_buffers(cam, cam->nreadbuffers,
IO_READ)) {
DBG(1, "read() failed, not enough memory");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -ENOMEM;
}
cam->io = IO_READ;
@ -1324,30 +1326,32 @@ et61x251_read(struct file* filp, char __user * buf,
}
if (!count) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return 0;
}
if (list_empty(&cam->outqueue)) {
if (filp->f_flags & O_NONBLOCK) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EAGAIN;
}
err = wait_event_interruptible
( cam->wait_frame,
(!list_empty(&cam->outqueue)) ||
(cam->state & DEV_DISCONNECTED) ||
(cam->state & DEV_MISCONFIGURED) );
if (err) {
up(&cam->fileop_sem);
return err;
timeout = wait_event_interruptible_timeout
( cam->wait_frame,
(!list_empty(&cam->outqueue)) ||
(cam->state & DEV_DISCONNECTED) ||
(cam->state & DEV_MISCONFIGURED),
cam->module_param.frame_timeout *
1000 * msecs_to_jiffies(1) );
if (timeout < 0) {
mutex_unlock(&cam->fileop_mutex);
return timeout;
}
if (cam->state & DEV_DISCONNECTED) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -ENODEV;
}
if (cam->state & DEV_MISCONFIGURED) {
up(&cam->fileop_sem);
if (!timeout || (cam->state & DEV_MISCONFIGURED)) {
mutex_unlock(&cam->fileop_mutex);
return -EIO;
}
}
@ -1375,7 +1379,7 @@ exit:
PDBGG("Frame #%lu, bytes read: %zu",
(unsigned long)f->buf.index, count);
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return err ? err : count;
}
@ -1388,7 +1392,7 @@ static unsigned int et61x251_poll(struct file *filp, poll_table *wait)
unsigned long lock_flags;
unsigned int mask = 0;
if (down_interruptible(&cam->fileop_sem))
if (mutex_lock_interruptible(&cam->fileop_mutex))
return POLLERR;
if (cam->state & DEV_DISCONNECTED) {
@ -1426,12 +1430,12 @@ static unsigned int et61x251_poll(struct file *filp, poll_table *wait)
if (!list_empty(&cam->outqueue))
mask |= POLLIN | POLLRDNORM;
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return mask;
error:
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return POLLERR;
}
@ -1465,25 +1469,25 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
void *pos;
u32 i;
if (down_interruptible(&cam->fileop_sem))
if (mutex_lock_interruptible(&cam->fileop_mutex))
return -ERESTARTSYS;
if (cam->state & DEV_DISCONNECTED) {
DBG(1, "Device not present");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -ENODEV;
}
if (cam->state & DEV_MISCONFIGURED) {
DBG(1, "The camera is misconfigured. Close and open it "
"again.");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EIO;
}
if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
size != PAGE_ALIGN(cam->frame[0].buf.length)) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EINVAL;
}
@ -1492,7 +1496,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
break;
}
if (i == cam->nbuffers) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EINVAL;
}
@ -1502,7 +1506,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
pos = cam->frame[i].bufmem;
while (size > 0) { /* size is page-aligned */
if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EAGAIN;
}
start += PAGE_SIZE;
@ -1515,7 +1519,7 @@ static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma)
et61x251_vm_open(vma);
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return 0;
}
@ -1557,6 +1561,7 @@ et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg)
memset(&i, 0, sizeof(i));
strcpy(i.name, "Camera");
i.type = V4L2_INPUT_TYPE_CAMERA;
if (copy_to_user(arg, &i, sizeof(i)))
return -EFAULT;
@ -1566,7 +1571,19 @@ et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_gs_input(struct et61x251_device* cam, void __user * arg)
et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg)
{
int index = 0;
if (copy_to_user(arg, &index, sizeof(index)))
return -EFAULT;
return 0;
}
static int
et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg)
{
int index;
@ -1583,7 +1600,7 @@ et61x251_vidioc_gs_input(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_queryctrl qc;
u8 i;
@ -1605,7 +1622,7 @@ et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_control ctrl;
int err = 0;
u8 i;
@ -1637,7 +1654,7 @@ exit:
static int
et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_control ctrl;
u8 i;
int err = 0;
@ -1650,6 +1667,8 @@ et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
if (ctrl.id == s->qctrl[i].id) {
if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)
return -EINVAL;
if (ctrl.value < s->qctrl[i].minimum ||
ctrl.value > s->qctrl[i].maximum)
return -ERANGE;
@ -1669,7 +1688,7 @@ et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg)
{
struct v4l2_cropcap* cc = &(cam->sensor->cropcap);
struct v4l2_cropcap* cc = &(cam->sensor.cropcap);
cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cc->pixelaspect.numerator = 1;
@ -1685,7 +1704,7 @@ et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_crop crop = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
};
@ -1702,7 +1721,7 @@ et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg)
static int
et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_crop crop;
struct v4l2_rect* rect;
struct v4l2_rect* bounds = &(s->cropcap.bounds);
@ -1843,7 +1862,7 @@ static int
et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg)
{
struct v4l2_format format;
struct v4l2_pix_format* pfmt = &(cam->sensor->pix_format);
struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format);
if (copy_from_user(&format, arg, sizeof(format)))
return -EFAULT;
@ -1868,7 +1887,7 @@ static int
et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd,
void __user * arg)
{
struct et61x251_sensor* s = cam->sensor;
struct et61x251_sensor* s = &cam->sensor;
struct v4l2_format format;
struct v4l2_pix_format* pix;
struct v4l2_pix_format* pfmt = &(s->pix_format);
@ -2155,7 +2174,7 @@ et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp,
struct v4l2_buffer b;
struct et61x251_frame_t *f;
unsigned long lock_flags;
int err = 0;
long timeout;
if (copy_from_user(&b, arg, sizeof(b)))
return -EFAULT;
@ -2168,16 +2187,18 @@ et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp,
return -EINVAL;
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
err = wait_event_interruptible
( cam->wait_frame,
(!list_empty(&cam->outqueue)) ||
(cam->state & DEV_DISCONNECTED) ||
(cam->state & DEV_MISCONFIGURED) );
if (err)
return err;
timeout = wait_event_interruptible_timeout
( cam->wait_frame,
(!list_empty(&cam->outqueue)) ||
(cam->state & DEV_DISCONNECTED) ||
(cam->state & DEV_MISCONFIGURED),
cam->module_param.frame_timeout *
1000 * msecs_to_jiffies(1) );
if (timeout < 0)
return timeout;
if (cam->state & DEV_DISCONNECTED)
return -ENODEV;
if (cam->state & DEV_MISCONFIGURED)
if (!timeout || (cam->state & DEV_MISCONFIGURED))
return -EIO;
}
@ -2309,8 +2330,10 @@ static int et61x251_ioctl_v4l2(struct inode* inode, struct file* filp,
return et61x251_vidioc_enuminput(cam, arg);
case VIDIOC_G_INPUT:
return et61x251_vidioc_g_input(cam, arg);
case VIDIOC_S_INPUT:
return et61x251_vidioc_gs_input(cam, arg);
return et61x251_vidioc_s_input(cam, arg);
case VIDIOC_QUERYCTRL:
return et61x251_vidioc_query_ctrl(cam, arg);
@ -2393,19 +2416,19 @@ static int et61x251_ioctl(struct inode* inode, struct file* filp,
struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
int err = 0;
if (down_interruptible(&cam->fileop_sem))
if (mutex_lock_interruptible(&cam->fileop_mutex))
return -ERESTARTSYS;
if (cam->state & DEV_DISCONNECTED) {
DBG(1, "Device not present");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -ENODEV;
}
if (cam->state & DEV_MISCONFIGURED) {
DBG(1, "The camera is misconfigured. Close and open it "
"again.");
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return -EIO;
}
@ -2413,7 +2436,7 @@ static int et61x251_ioctl(struct inode* inode, struct file* filp,
err = et61x251_ioctl_v4l2(inode, filp, cmd, (void __user *)arg);
up(&cam->fileop_sem);
mutex_unlock(&cam->fileop_mutex);
return err;
}
@ -2459,7 +2482,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
goto fail;
}
init_MUTEX(&cam->dev_sem);
mutex_init(&cam->dev_mutex);
DBG(2, "ET61X[12]51 PC Camera Controller detected "
"(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct);
@ -2470,8 +2493,8 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
break;
}
if (!err && cam->sensor)
DBG(2, "%s image sensor detected", cam->sensor->name);
if (!err)
DBG(2, "%s image sensor detected", cam->sensor.name);
else {
DBG(1, "No supported image sensor detected");
err = -ENODEV;
@ -2492,7 +2515,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
cam->v4ldev->release = video_device_release;
video_set_drvdata(cam->v4ldev, cam);
down(&cam->dev_sem);
mutex_lock(&cam->dev_mutex);
err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
video_nr[dev_nr]);
@ -2502,13 +2525,14 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
DBG(1, "Free /dev/videoX node not found");
video_nr[dev_nr] = -1;
dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
goto fail;
}
DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
cam->module_param.force_munmap = force_munmap[dev_nr];
cam->module_param.frame_timeout = frame_timeout[dev_nr];
dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
@ -2519,7 +2543,7 @@ et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
usb_set_intfdata(intf, cam);
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
return 0;
@ -2543,7 +2567,7 @@ static void et61x251_usb_disconnect(struct usb_interface* intf)
down_write(&et61x251_disconnect);
down(&cam->dev_sem);
mutex_lock(&cam->dev_mutex);
DBG(2, "Disconnecting %s...", cam->v4ldev->name);
@ -2557,13 +2581,14 @@ static void et61x251_usb_disconnect(struct usb_interface* intf)
et61x251_stop_transfer(cam);
cam->state |= DEV_DISCONNECTED;
wake_up_interruptible(&cam->wait_frame);
wake_up_interruptible(&cam->wait_stream);
wake_up(&cam->wait_stream);
usb_get_dev(cam->usbdev);
} else {
cam->state |= DEV_DISCONNECTED;
et61x251_release_resources(cam);
}
up(&cam->dev_sem);
mutex_unlock(&cam->dev_mutex);
if (!cam->users)
kfree(cam);

5
drivers/usb/media/et61x251_sensor.h
View File

@ -42,6 +42,9 @@ static int (*et61x251_sensor_table[])(struct et61x251_device*) = { \
NULL, \
};
extern struct et61x251_device*
et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id);
extern void
et61x251_attach_sensor(struct et61x251_device* cam,
struct et61x251_sensor* sensor);
@ -105,8 +108,6 @@ struct et61x251_sensor {
int (*set_pix_format)(struct et61x251_device* cam,
const struct v4l2_pix_format* pix);
const struct usb_device* usbdev;
/* Private */
struct v4l2_queryctrl _qctrl[ET61X251_MAX_CTRLS];
struct v4l2_rect _rect;

10
drivers/usb/media/et61x251_tas5130d1b.c
View File

@ -126,12 +126,16 @@ static struct et61x251_sensor tas5130d1b = {
int et61x251_probe_tas5130d1b(struct et61x251_device* cam)
{
/* This sensor has no identifiers, so let's attach it anyway */
et61x251_attach_sensor(cam, &tas5130d1b);
const struct usb_device_id tas5130d1b_id_table[] = {
{ USB_DEVICE(0x102c, 0x6251), },
{ }
};
/* Sensor detection is based on USB pid/vid */
if (le16_to_cpu(tas5130d1b.usbdev->descriptor.idProduct) != 0x6251)
if (!et61x251_match_id(cam, tas5130d1b_id_table))
return -ENODEV;
et61x251_attach_sensor(cam, &tas5130d1b);
return 0;
}