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path: root/drivers/media/usb/gspca/gspca.c
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Diffstat (limited to 'drivers/media/usb/gspca/gspca.c')
-rw-r--r--drivers/media/usb/gspca/gspca.c86
1 files changed, 44 insertions, 42 deletions
diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c
index 5995ec4de6b..f3a7ace0fac 100644
--- a/drivers/media/usb/gspca/gspca.c
+++ b/drivers/media/usb/gspca/gspca.c
@@ -504,8 +504,7 @@ static int frame_alloc(struct gspca_dev *gspca_dev, struct file *file,
unsigned int frsz;
int i;
- i = gspca_dev->curr_mode;
- frsz = gspca_dev->cam.cam_mode[i].sizeimage;
+ frsz = gspca_dev->pixfmt.sizeimage;
PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz);
frsz = PAGE_ALIGN(frsz);
if (count >= GSPCA_MAX_FRAMES)
@@ -627,16 +626,14 @@ static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt,
static u32 which_bandwidth(struct gspca_dev *gspca_dev)
{
u32 bandwidth;
- int i;
/* get the (max) image size */
- i = gspca_dev->curr_mode;
- bandwidth = gspca_dev->cam.cam_mode[i].sizeimage;
+ bandwidth = gspca_dev->pixfmt.sizeimage;
/* if the image is compressed, estimate its mean size */
if (!gspca_dev->cam.needs_full_bandwidth &&
- bandwidth < gspca_dev->cam.cam_mode[i].width *
- gspca_dev->cam.cam_mode[i].height)
+ bandwidth < gspca_dev->pixfmt.width *
+ gspca_dev->pixfmt.height)
bandwidth = bandwidth * 3 / 8; /* 0.375 */
/* estimate the frame rate */
@@ -650,7 +647,7 @@ static u32 which_bandwidth(struct gspca_dev *gspca_dev)
/* don't hope more than 15 fps with USB 1.1 and
* image resolution >= 640x480 */
- if (gspca_dev->width >= 640
+ if (gspca_dev->pixfmt.width >= 640
&& gspca_dev->dev->speed == USB_SPEED_FULL)
bandwidth *= 15; /* 15 fps */
else
@@ -982,9 +979,7 @@ static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
i = gspca_dev->cam.nmodes - 1; /* take the highest mode */
gspca_dev->curr_mode = i;
- gspca_dev->width = gspca_dev->cam.cam_mode[i].width;
- gspca_dev->height = gspca_dev->cam.cam_mode[i].height;
- gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixelformat;
+ gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i];
/* does nothing if ctrl_handler == NULL */
v4l2_ctrl_handler_setup(gspca_dev->vdev.ctrl_handler);
@@ -1029,33 +1024,35 @@ static int gspca_get_mode(struct gspca_dev *gspca_dev,
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int vidioc_g_register(struct file *file, void *priv,
- struct v4l2_dbg_register *reg)
+static int vidioc_g_chip_info(struct file *file, void *priv,
+ struct v4l2_dbg_chip_info *chip)
{
struct gspca_dev *gspca_dev = video_drvdata(file);
gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->get_register(gspca_dev, reg);
+ if (gspca_dev->sd_desc->get_chip_info)
+ return gspca_dev->sd_desc->get_chip_info(gspca_dev, chip);
+ return chip->match.addr ? -EINVAL : 0;
}
-static int vidioc_s_register(struct file *file, void *priv,
- const struct v4l2_dbg_register *reg)
+static int vidioc_g_register(struct file *file, void *priv,
+ struct v4l2_dbg_register *reg)
{
struct gspca_dev *gspca_dev = video_drvdata(file);
gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->set_register(gspca_dev, reg);
+ return gspca_dev->sd_desc->get_register(gspca_dev, reg);
}
-#endif
-static int vidioc_g_chip_ident(struct file *file, void *priv,
- struct v4l2_dbg_chip_ident *chip)
+static int vidioc_s_register(struct file *file, void *priv,
+ const struct v4l2_dbg_register *reg)
{
struct gspca_dev *gspca_dev = video_drvdata(file);
gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->get_chip_ident(gspca_dev, chip);
+ return gspca_dev->sd_desc->set_register(gspca_dev, reg);
}
+#endif
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *fmtdesc)
@@ -1103,10 +1100,8 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct gspca_dev *gspca_dev = video_drvdata(file);
- int mode;
- mode = gspca_dev->curr_mode;
- fmt->fmt.pix = gspca_dev->cam.cam_mode[mode];
+ fmt->fmt.pix = gspca_dev->pixfmt;
/* some drivers use priv internally, zero it before giving it to
userspace */
fmt->fmt.pix.priv = 0;
@@ -1138,6 +1133,12 @@ static int try_fmt_vid_cap(struct gspca_dev *gspca_dev,
mode = mode2;
}
fmt->fmt.pix = gspca_dev->cam.cam_mode[mode];
+ if (gspca_dev->sd_desc->try_fmt) {
+ /* pass original resolution to subdriver try_fmt */
+ fmt->fmt.pix.width = w;
+ fmt->fmt.pix.height = h;
+ gspca_dev->sd_desc->try_fmt(gspca_dev, fmt);
+ }
/* some drivers use priv internally, zero it before giving it to
userspace */
fmt->fmt.pix.priv = 0;
@@ -1176,19 +1177,16 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
goto out;
}
- if (ret == gspca_dev->curr_mode) {
- ret = 0;
- goto out; /* same mode */
- }
-
if (gspca_dev->streaming) {
ret = -EBUSY;
goto out;
}
- gspca_dev->width = fmt->fmt.pix.width;
- gspca_dev->height = fmt->fmt.pix.height;
- gspca_dev->pixfmt = fmt->fmt.pix.pixelformat;
gspca_dev->curr_mode = ret;
+ if (gspca_dev->sd_desc->try_fmt)
+ /* subdriver try_fmt can modify format parameters */
+ gspca_dev->pixfmt = fmt->fmt.pix;
+ else
+ gspca_dev->pixfmt = gspca_dev->cam.cam_mode[ret];
ret = 0;
out:
@@ -1203,6 +1201,9 @@ static int vidioc_enum_framesizes(struct file *file, void *priv,
int i;
__u32 index = 0;
+ if (gspca_dev->sd_desc->enum_framesizes)
+ return gspca_dev->sd_desc->enum_framesizes(gspca_dev, fsize);
+
for (i = 0; i < gspca_dev->cam.nmodes; i++) {
if (fsize->pixel_format !=
gspca_dev->cam.cam_mode[i].pixelformat)
@@ -1264,6 +1265,7 @@ static void gspca_release(struct v4l2_device *v4l2_device)
static int dev_open(struct file *file)
{
struct gspca_dev *gspca_dev = video_drvdata(file);
+ int ret;
PDEBUG(D_STREAM, "[%s] open", current->comm);
@@ -1271,7 +1273,10 @@ static int dev_open(struct file *file)
if (!try_module_get(gspca_dev->module))
return -ENODEV;
- return v4l2_fh_open(file);
+ ret = v4l2_fh_open(file);
+ if (ret)
+ module_put(gspca_dev->module);
+ return ret;
}
static int dev_close(struct file *file)
@@ -1465,8 +1470,9 @@ static int vidioc_streamon(struct file *file, void *priv,
if (ret < 0)
goto out;
}
- PDEBUG_MODE(gspca_dev, D_STREAM, "stream on OK", gspca_dev->pixfmt,
- gspca_dev->width, gspca_dev->height);
+ PDEBUG_MODE(gspca_dev, D_STREAM, "stream on OK",
+ gspca_dev->pixfmt.pixelformat,
+ gspca_dev->pixfmt.width, gspca_dev->pixfmt.height);
ret = 0;
out:
mutex_unlock(&gspca_dev->queue_lock);
@@ -1974,10 +1980,10 @@ static const struct v4l2_ioctl_ops dev_ioctl_ops = {
.vidioc_enum_framesizes = vidioc_enum_framesizes,
.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_chip_info = vidioc_g_chip_info,
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
- .vidioc_g_chip_ident = vidioc_g_chip_ident,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
@@ -2086,14 +2092,10 @@ int gspca_dev_probe2(struct usb_interface *intf,
v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_DQBUF);
v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_QBUF);
v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_QUERYBUF);
- if (!gspca_dev->sd_desc->get_chip_ident)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_G_CHIP_IDENT);
#ifdef CONFIG_VIDEO_ADV_DEBUG
- if (!gspca_dev->sd_desc->get_chip_ident ||
- !gspca_dev->sd_desc->get_register)
+ if (!gspca_dev->sd_desc->get_register)
v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_G_REGISTER);
- if (!gspca_dev->sd_desc->get_chip_ident ||
- !gspca_dev->sd_desc->set_register)
+ if (!gspca_dev->sd_desc->set_register)
v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_S_REGISTER);
#endif
if (!gspca_dev->sd_desc->get_jcomp)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:46:52 +0000