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path: root/drivers/media/video/gspca/gspca.c
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Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
-rw-r--r--drivers/media/video/gspca/gspca.c161
1 files changed, 113 insertions, 48 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 78abc1c1f9d5..8fe8fb486d62 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -148,7 +148,7 @@ static void int_irq(struct urb *urb)
if (ret == 0) {
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret < 0)
- PDEBUG(D_ERR, "Resubmit URB failed with error %i", ret);
+ err("Resubmit URB failed with error %i", ret);
}
}
@@ -177,8 +177,8 @@ static int gspca_input_connect(struct gspca_dev *dev)
err = input_register_device(input_dev);
if (err) {
- PDEBUG(D_ERR, "Input device registration failed "
- "with error %i", err);
+ err("Input device registration failed with error %i",
+ err);
input_dev->dev.parent = NULL;
input_free_device(input_dev);
} else {
@@ -328,8 +328,7 @@ static void fill_frame(struct gspca_dev *gspca_dev,
}
st = urb->iso_frame_desc[i].status;
if (st) {
- PDEBUG(D_ERR,
- "ISOC data error: [%d] len=%d, status=%d",
+ err("ISOC data error: [%d] len=%d, status=%d",
i, len, st);
gspca_dev->last_packet_type = DISCARD_PACKET;
continue;
@@ -347,7 +346,7 @@ resubmit:
/* resubmit the URB */
st = usb_submit_urb(urb, GFP_ATOMIC);
if (st < 0)
- PDEBUG(D_ERR|D_PACK, "usb_submit_urb() ret %d", st);
+ err("usb_submit_urb() ret %d", st);
}
/*
@@ -401,7 +400,7 @@ resubmit:
if (gspca_dev->cam.bulk_nurbs != 0) {
st = usb_submit_urb(urb, GFP_ATOMIC);
if (st < 0)
- PDEBUG(D_ERR|D_PACK, "usb_submit_urb() ret %d", st);
+ err("usb_submit_urb() ret %d", st);
}
}
@@ -433,12 +432,13 @@ void gspca_frame_add(struct gspca_dev *gspca_dev,
/* if there are no queued buffer, discard the whole frame */
if (i == atomic_read(&gspca_dev->fr_q)) {
gspca_dev->last_packet_type = DISCARD_PACKET;
+ gspca_dev->sequence++;
return;
}
j = gspca_dev->fr_queue[i];
frame = &gspca_dev->frame[j];
frame->v4l2_buf.timestamp = ktime_to_timeval(ktime_get());
- frame->v4l2_buf.sequence = ++gspca_dev->sequence;
+ frame->v4l2_buf.sequence = gspca_dev->sequence++;
gspca_dev->image = frame->data;
gspca_dev->image_len = 0;
} else {
@@ -590,7 +590,7 @@ static int gspca_set_alt0(struct gspca_dev *gspca_dev)
return 0;
ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
if (ret < 0)
- PDEBUG(D_ERR|D_STREAM, "set alt 0 err %d", ret);
+ err("set alt 0 err %d", ret);
return ret;
}
@@ -652,7 +652,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
: USB_ENDPOINT_XFER_ISOC;
i = gspca_dev->alt; /* previous alt setting */
if (gspca_dev->cam.reverse_alts) {
- if (gspca_dev->audio)
+ if (gspca_dev->audio && i < gspca_dev->nbalt - 2)
i++;
while (++i < gspca_dev->nbalt) {
ep = alt_xfer(&intf->altsetting[i], xfer);
@@ -660,7 +660,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
break;
}
} else {
- if (gspca_dev->audio)
+ if (gspca_dev->audio && i > 1)
i--;
while (--i >= 0) {
ep = alt_xfer(&intf->altsetting[i], xfer);
@@ -850,8 +850,7 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
break;
gspca_stream_off(gspca_dev);
if (ret != -ENOSPC) {
- PDEBUG(D_ERR|D_STREAM,
- "usb_submit_urb alt %d err %d",
+ err("usb_submit_urb alt %d err %d",
gspca_dev->alt, ret);
goto out;
}
@@ -880,6 +879,7 @@ out:
static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
{
+ struct gspca_ctrl *ctrl;
int i;
i = gspca_dev->cam.nmodes - 1; /* take the highest mode */
@@ -887,6 +887,16 @@ static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
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;
+
+ /* set the current control values to their default values
+ * which may have changed in sd_init() */
+ ctrl = gspca_dev->cam.ctrls;
+ if (ctrl != NULL) {
+ for (i = 0;
+ i < gspca_dev->sd_desc->nctrls;
+ i++, ctrl++)
+ ctrl->val = ctrl->def;
+ }
}
static int wxh_to_mode(struct gspca_dev *gspca_dev,
@@ -1310,7 +1320,7 @@ out:
return ret;
}
-static const struct ctrl *get_ctrl(struct gspca_dev *gspca_dev,
+static int get_ctrl(struct gspca_dev *gspca_dev,
int id)
{
const struct ctrl *ctrls;
@@ -1322,9 +1332,9 @@ static const struct ctrl *get_ctrl(struct gspca_dev *gspca_dev,
if (gspca_dev->ctrl_dis & (1 << i))
continue;
if (id == ctrls->qctrl.id)
- return ctrls;
+ return i;
}
- return NULL;
+ return -1;
}
static int vidioc_queryctrl(struct file *file, void *priv,
@@ -1332,34 +1342,40 @@ static int vidioc_queryctrl(struct file *file, void *priv,
{
struct gspca_dev *gspca_dev = priv;
const struct ctrl *ctrls;
- int i;
+ struct gspca_ctrl *gspca_ctrl;
+ int i, idx;
u32 id;
- ctrls = NULL;
id = q_ctrl->id;
if (id & V4L2_CTRL_FLAG_NEXT_CTRL) {
id &= V4L2_CTRL_ID_MASK;
id++;
+ idx = -1;
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
if (gspca_dev->ctrl_dis & (1 << i))
continue;
if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
continue;
- if (ctrls && gspca_dev->sd_desc->ctrls[i].qctrl.id
- > ctrls->qctrl.id)
+ if (idx >= 0
+ && gspca_dev->sd_desc->ctrls[i].qctrl.id
+ > gspca_dev->sd_desc->ctrls[idx].qctrl.id)
continue;
- ctrls = &gspca_dev->sd_desc->ctrls[i];
+ idx = i;
}
- if (ctrls == NULL)
- return -EINVAL;
} else {
- ctrls = get_ctrl(gspca_dev, id);
- if (ctrls == NULL)
- return -EINVAL;
- i = ctrls - gspca_dev->sd_desc->ctrls;
+ idx = get_ctrl(gspca_dev, id);
}
- memcpy(q_ctrl, ctrls, sizeof *q_ctrl);
- if (gspca_dev->ctrl_inac & (1 << i))
+ if (idx < 0)
+ return -EINVAL;
+ ctrls = &gspca_dev->sd_desc->ctrls[idx];
+ memcpy(q_ctrl, &ctrls->qctrl, sizeof *q_ctrl);
+ if (gspca_dev->cam.ctrls != NULL) {
+ gspca_ctrl = &gspca_dev->cam.ctrls[idx];
+ q_ctrl->default_value = gspca_ctrl->def;
+ q_ctrl->minimum = gspca_ctrl->min;
+ q_ctrl->maximum = gspca_ctrl->max;
+ }
+ if (gspca_dev->ctrl_inac & (1 << idx))
q_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
return 0;
}
@@ -1369,23 +1385,46 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
{
struct gspca_dev *gspca_dev = priv;
const struct ctrl *ctrls;
- int ret;
+ struct gspca_ctrl *gspca_ctrl;
+ int idx, ret;
- ctrls = get_ctrl(gspca_dev, ctrl->id);
- if (ctrls == NULL)
+ idx = get_ctrl(gspca_dev, ctrl->id);
+ if (idx < 0)
return -EINVAL;
-
- if (ctrl->value < ctrls->qctrl.minimum
- || ctrl->value > ctrls->qctrl.maximum)
- return -ERANGE;
+ if (gspca_dev->ctrl_inac & (1 << idx))
+ return -EINVAL;
+ ctrls = &gspca_dev->sd_desc->ctrls[idx];
+ if (gspca_dev->cam.ctrls != NULL) {
+ gspca_ctrl = &gspca_dev->cam.ctrls[idx];
+ if (ctrl->value < gspca_ctrl->min
+ || ctrl->value > gspca_ctrl->max)
+ return -ERANGE;
+ } else {
+ gspca_ctrl = NULL;
+ if (ctrl->value < ctrls->qctrl.minimum
+ || ctrl->value > ctrls->qctrl.maximum)
+ return -ERANGE;
+ }
PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
return -ERESTARTSYS;
+ if (!gspca_dev->present) {
+ ret = -ENODEV;
+ goto out;
+ }
gspca_dev->usb_err = 0;
- if (gspca_dev->present)
+ if (ctrls->set != NULL) {
ret = ctrls->set(gspca_dev, ctrl->value);
- else
- ret = -ENODEV;
+ goto out;
+ }
+ if (gspca_ctrl != NULL) {
+ gspca_ctrl->val = ctrl->value;
+ if (ctrls->set_control != NULL
+ && gspca_dev->streaming)
+ ctrls->set_control(gspca_dev);
+ }
+ ret = gspca_dev->usb_err;
+out:
mutex_unlock(&gspca_dev->usb_lock);
return ret;
}
@@ -1395,19 +1434,28 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
{
struct gspca_dev *gspca_dev = priv;
const struct ctrl *ctrls;
- int ret;
+ int idx, ret;
- ctrls = get_ctrl(gspca_dev, ctrl->id);
- if (ctrls == NULL)
+ idx = get_ctrl(gspca_dev, ctrl->id);
+ if (idx < 0)
return -EINVAL;
+ ctrls = &gspca_dev->sd_desc->ctrls[idx];
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
return -ERESTARTSYS;
+ if (!gspca_dev->present) {
+ ret = -ENODEV;
+ goto out;
+ }
gspca_dev->usb_err = 0;
- if (gspca_dev->present)
+ if (ctrls->get != NULL) {
ret = ctrls->get(gspca_dev, &ctrl->value);
- else
- ret = -ENODEV;
+ goto out;
+ }
+ if (gspca_dev->cam.ctrls != NULL)
+ ctrl->value = gspca_dev->cam.ctrls[idx].val;
+ ret = 0;
+out:
mutex_unlock(&gspca_dev->usb_lock);
return ret;
}
@@ -2127,6 +2175,22 @@ static struct video_device gspca_template = {
.release = gspca_release,
};
+/* initialize the controls */
+static void ctrls_init(struct gspca_dev *gspca_dev)
+{
+ struct gspca_ctrl *ctrl;
+ int i;
+
+ for (i = 0, ctrl = gspca_dev->cam.ctrls;
+ i < gspca_dev->sd_desc->nctrls;
+ i++, ctrl++) {
+ ctrl->def = gspca_dev->sd_desc->ctrls[i].qctrl.default_value;
+ ctrl->val = ctrl->def;
+ ctrl->min = gspca_dev->sd_desc->ctrls[i].qctrl.minimum;
+ ctrl->max = gspca_dev->sd_desc->ctrls[i].qctrl.maximum;
+ }
+}
+
/*
* probe and create a new gspca device
*
@@ -2188,6 +2252,8 @@ int gspca_dev_probe2(struct usb_interface *intf,
ret = sd_desc->config(gspca_dev, id);
if (ret < 0)
goto out;
+ if (gspca_dev->cam.ctrls != NULL)
+ ctrls_init(gspca_dev);
ret = sd_desc->init(gspca_dev);
if (ret < 0)
goto out;
@@ -2243,7 +2309,7 @@ int gspca_dev_probe(struct usb_interface *intf,
/* we don't handle multi-config cameras */
if (dev->descriptor.bNumConfigurations != 1) {
- PDEBUG(D_ERR, "%04x:%04x too many config",
+ err("%04x:%04x too many config",
id->idVendor, id->idProduct);
return -ENODEV;
}
@@ -2428,7 +2494,7 @@ EXPORT_SYMBOL(gspca_auto_gain_n_exposure);
/* -- module insert / remove -- */
static int __init gspca_init(void)
{
- info("main v%d.%d.%d registered",
+ info("v%d.%d.%d registered",
(DRIVER_VERSION_NUMBER >> 16) & 0xff,
(DRIVER_VERSION_NUMBER >> 8) & 0xff,
DRIVER_VERSION_NUMBER & 0xff);
@@ -2436,7 +2502,6 @@ static int __init gspca_init(void)
}
static void __exit gspca_exit(void)
{
- info("main deregistered");
}
module_init(gspca_init);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.