/*
* Main USB camera driver
*
- * Copyright (C) 2008-2009 Jean-Francois Moine (http://moinejf.free.fr)
+ * Copyright (C) 2008-2010 Jean-François Moine <http://moinejf.free.fr>
*
* Camera button input handling by Márton Németh
* Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu>
#include <linux/io.h>
#include <asm/page.h>
#include <linux/uaccess.h>
-#include <linux/jiffies.h>
+#include <linux/ktime.h>
#include <media/v4l2-ioctl.h>
#include "gspca.h"
-#ifdef CONFIG_INPUT
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
#include <linux/input.h>
#include <linux/usb/input.h>
#endif
#error "DEF_NURBS too big"
#endif
-MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
+MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("GSPCA USB Camera Driver");
MODULE_LICENSE("GPL");
/*
* Input and interrupt endpoint handling functions
*/
-#ifdef CONFIG_INPUT
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
static void int_irq(struct urb *urb)
{
struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
void *buffer = NULL;
int ret = -EINVAL;
- buffer_len = ep->wMaxPacketSize;
+ buffer_len = le16_to_cpu(ep->wMaxPacketSize);
interval = ep->bInterval;
PDEBUG(D_PROBE, "found int in endpoint: 0x%x, "
"buffer_len=%u, interval=%u",
goto error;
}
- buffer = usb_alloc_coherent(dev, ep->wMaxPacketSize,
+ buffer = usb_alloc_coherent(dev, buffer_len,
GFP_KERNEL, &urb->transfer_dma);
if (!buffer) {
ret = -ENOMEM;
}
}
#else
-#define gspca_input_connect(gspca_dev) 0
-#define gspca_input_create_urb(gspca_dev)
-#define gspca_input_destroy_urb(gspca_dev)
+static inline void gspca_input_destroy_urb(struct gspca_dev *gspca_dev)
+{
+}
+
+static inline void gspca_input_create_urb(struct gspca_dev *gspca_dev)
+{
+}
+
+static inline int gspca_input_connect(struct gspca_dev *dev)
+{
+ return 0;
+}
#endif
/* get the current input frame buffer */
* is not queued, discard the whole frame */
if (packet_type == FIRST_PACKET) {
frame->data_end = frame->data;
- jiffies_to_timeval(get_jiffies_64(),
- &frame->v4l2_buf.timestamp);
+ frame->v4l2_buf.timestamp = ktime_to_timeval(ktime_get());
frame->v4l2_buf.sequence = ++gspca_dev->sequence;
} else if (gspca_dev->last_packet_type == DISCARD_PACKET) {
if (packet_type == LAST_PACKET)
}
}
+static int gspca_set_alt0(struct gspca_dev *gspca_dev)
+{
+ int ret;
+
+ if (gspca_dev->alt == 0)
+ 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);
+ return ret;
+}
+
+/* Note: both the queue and the usb locks should be held when calling this */
+static void gspca_stream_off(struct gspca_dev *gspca_dev)
+{
+ gspca_dev->streaming = 0;
+ if (gspca_dev->present) {
+ if (gspca_dev->sd_desc->stopN)
+ gspca_dev->sd_desc->stopN(gspca_dev);
+ destroy_urbs(gspca_dev);
+ gspca_input_destroy_urb(gspca_dev);
+ gspca_set_alt0(gspca_dev);
+ gspca_input_create_urb(gspca_dev);
+ }
+
+ /* always call stop0 to free the subdriver's resources */
+ if (gspca_dev->sd_desc->stop0)
+ gspca_dev->sd_desc->stop0(gspca_dev);
+ PDEBUG(D_STREAM, "stream off OK");
+}
+
/*
* look for an input transfer endpoint in an alternate setting
*/
}
if (ret >= 0)
break;
- gspca_dev->streaming = 0;
- destroy_urbs(gspca_dev);
+ gspca_stream_off(gspca_dev);
if (ret != -ENOSPC) {
PDEBUG(D_ERR|D_STREAM,
"usb_submit_urb alt %d err %d",
return ret;
}
-static int gspca_set_alt0(struct gspca_dev *gspca_dev)
-{
- int ret;
-
- if (gspca_dev->alt == 0)
- 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);
- return ret;
-}
-
-/* Note: both the queue and the usb locks should be held when calling this */
-static void gspca_stream_off(struct gspca_dev *gspca_dev)
-{
- gspca_dev->streaming = 0;
- if (gspca_dev->present) {
- if (gspca_dev->sd_desc->stopN)
- gspca_dev->sd_desc->stopN(gspca_dev);
- destroy_urbs(gspca_dev);
- gspca_input_destroy_urb(gspca_dev);
- gspca_set_alt0(gspca_dev);
- gspca_input_create_urb(gspca_dev);
- }
-
- /* always call stop0 to free the subdriver's resources */
- if (gspca_dev->sd_desc->stop0)
- gspca_dev->sd_desc->stop0(gspca_dev);
- PDEBUG(D_STREAM, "stream off OK");
-}
-
static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
{
int i;
struct v4l2_requestbuffers *rb)
{
struct gspca_dev *gspca_dev = priv;
- int i, ret = 0;
+ int i, ret = 0, streaming;
switch (rb->memory) {
case GSPCA_MEMORY_READ: /* (internal call) */
}
/* stop streaming */
- if (gspca_dev->streaming) {
+ streaming = gspca_dev->streaming;
+ if (streaming) {
mutex_lock(&gspca_dev->usb_lock);
gspca_dev->usb_err = 0;
gspca_stream_off(gspca_dev);
if (ret == 0) {
rb->count = gspca_dev->nframes;
gspca_dev->capt_file = file;
+ if (streaming)
+ ret = gspca_init_transfer(gspca_dev);
}
out:
mutex_unlock(&gspca_dev->queue_lock);
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
+ /* check the capture file */
+ if (gspca_dev->capt_file != file) {
+ ret = -EBUSY;
+ goto out;
+ }
+
if (gspca_dev->nframes == 0
|| !(gspca_dev->frame[0].v4l2_buf.flags & V4L2_BUF_FLAG_QUEUED)) {
ret = -EINVAL;
if (mutex_lock_interruptible(&gspca_dev->queue_lock))
return -ERESTARTSYS;
+ /* check the capture file */
+ if (gspca_dev->capt_file != file) {
+ ret = -EBUSY;
+ goto out;
+ }
+
/* stop streaming */
if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {
ret = -ERESTARTSYS;
}
/* get a frame */
- jiffies_to_timeval(get_jiffies_64(), ×tamp);
+ timestamp = ktime_to_timeval(ktime_get());
timestamp.tv_sec--;
n = 2;
for (;;) {
return 0;
out:
-#ifdef CONFIG_INPUT
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
if (gspca_dev->input_dev)
input_unregister_device(gspca_dev->input_dev);
#endif
void gspca_disconnect(struct usb_interface *intf)
{
struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
-#ifdef CONFIG_INPUT
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
struct input_dev *input_dev;
#endif
wake_up_interruptible(&gspca_dev->wq);
}
-#ifdef CONFIG_INPUT
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
gspca_input_destroy_urb(gspca_dev);
input_dev = gspca_dev->input_dev;
if (input_dev) {
git.openpandora.org / pandora-kernel.git / blobdiff