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path: root/drivers/media/video/usbvision/usbvision-core.c
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Diffstat (limited to 'drivers/media/video/usbvision/usbvision-core.c')
-rw-r--r--drivers/media/video/usbvision/usbvision-core.c80
1 files changed, 58 insertions, 22 deletions
diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c
index 901f664dc6d..bcb551adb7e 100644
--- a/drivers/media/video/usbvision/usbvision-core.c
+++ b/drivers/media/video/usbvision/usbvision-core.c
@@ -138,7 +138,7 @@ static void *usbvision_rvmalloc(unsigned long size)
return mem;
}
-void usbvision_rvfree(void *mem, unsigned long size)
+static void usbvision_rvfree(void *mem, unsigned long size)
{
unsigned long adr;
@@ -1852,28 +1852,33 @@ int usbvision_set_output(struct usb_usbvision *usbvision, int width,
/*
* usbvision_frames_alloc
- * allocate the maximum frames this driver can manage
+ * allocate the required frames
*/
-int usbvision_frames_alloc(struct usb_usbvision *usbvision)
+int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames)
{
int i;
- /* Allocate memory for the frame buffers */
- usbvision->max_frame_size = MAX_FRAME_SIZE;
- usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
- usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
+ /*needs to be page aligned cause the buffers can be mapped individually! */
+ usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth *
+ usbvision->curheight *
+ usbvision->palette.bytes_per_pixel);
- if(usbvision->fbuf == NULL) {
- err("%s: unable to allocate %d bytes for fbuf ",
- __FUNCTION__, usbvision->fbuf_size);
- return -ENOMEM;
+ /* Try to do my best to allocate the frames the user want in the remaining memory */
+ usbvision->num_frames = number_of_frames;
+ while (usbvision->num_frames > 0) {
+ usbvision->fbuf_size = usbvision->num_frames * usbvision->max_frame_size;
+ if((usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size))) {
+ break;
+ }
+ usbvision->num_frames--;
}
+
spin_lock_init(&usbvision->queue_lock);
init_waitqueue_head(&usbvision->wait_frame);
init_waitqueue_head(&usbvision->wait_stream);
/* Allocate all buffers */
- for (i = 0; i < USBVISION_NUMFRAMES; i++) {
+ for (i = 0; i < usbvision->num_frames; i++) {
usbvision->frame[i].index = i;
usbvision->frame[i].grabstate = FrameState_Unused;
usbvision->frame[i].data = usbvision->fbuf +
@@ -1887,7 +1892,8 @@ int usbvision_frames_alloc(struct usb_usbvision *usbvision)
usbvision->frame[i].height = usbvision->curheight;
usbvision->frame[i].bytes_read = 0;
}
- return 0;
+ PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)",usbvision->num_frames,usbvision->max_frame_size);
+ return usbvision->num_frames;
}
/*
@@ -1897,9 +1903,13 @@ int usbvision_frames_alloc(struct usb_usbvision *usbvision)
void usbvision_frames_free(struct usb_usbvision *usbvision)
{
/* Have to free all that memory */
+ PDEBUG(DBG_FUNC, "free %d frames",usbvision->num_frames);
+
if (usbvision->fbuf != NULL) {
usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
usbvision->fbuf = NULL;
+
+ usbvision->num_frames = 0;
}
}
/*
@@ -2030,8 +2040,8 @@ int usbvision_set_input(struct usb_usbvision *usbvision)
return 0;
/* Set input format expected from decoder*/
- if (usbvision_device_data[usbvision->DevModel].Vin_Reg1 >= 0) {
- value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1 & 0xff;
+ if (usbvision_device_data[usbvision->DevModel].Vin_Reg1_override) {
+ value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1;
} else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
/* SAA7113 uses 8 bit output */
value[0] = USBVISION_8_422_SYNC;
@@ -2102,8 +2112,8 @@ int usbvision_set_input(struct usb_usbvision *usbvision)
dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */
- if(usbvision_device_data[usbvision->DevModel].Dvi_yuv >= 0){
- dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv & 0xff;
+ if(usbvision_device_data[usbvision->DevModel].Dvi_yuv_override){
+ dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv;
}
else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
/* This changes as the fine sync control changes. Further investigation necessary */
@@ -2228,7 +2238,7 @@ static void call_usbvision_power_off(struct work_struct *work)
PDEBUG(DBG_FUNC, "");
down_interruptible(&usbvision->lock);
if(usbvision->user == 0) {
- usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
+ usbvision_i2c_unregister(usbvision);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
@@ -2351,6 +2361,32 @@ int usbvision_setup(struct usb_usbvision *usbvision,int format)
return USBVISION_IS_OPERATIONAL(usbvision);
}
+int usbvision_set_alternate(struct usb_usbvision *dev)
+{
+ int errCode, prev_alt = dev->ifaceAlt;
+ int i;
+
+ dev->ifaceAlt=0;
+ for(i=0;i< dev->num_alt; i++)
+ if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->ifaceAlt])
+ dev->ifaceAlt=i;
+
+ if (dev->ifaceAlt != prev_alt) {
+ dev->isocPacketSize = dev->alt_max_pkt_size[dev->ifaceAlt];
+ PDEBUG(DBG_FUNC,"setting alternate %d with wMaxPacketSize=%u", dev->ifaceAlt,dev->isocPacketSize);
+ errCode = usb_set_interface(dev->dev, dev->iface, dev->ifaceAlt);
+ if (errCode < 0) {
+ err ("cannot change alternate number to %d (error=%i)",
+ dev->ifaceAlt, errCode);
+ return errCode;
+ }
+ }
+
+ PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isocPacketSize);
+
+ return 0;
+}
+
/*
* usbvision_init_isoc()
*
@@ -2368,15 +2404,13 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
scratch_reset(usbvision);
/* Alternate interface 1 is is the biggest frame size */
- errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
+ errCode = usbvision_set_alternate(usbvision);
if (errCode < 0) {
usbvision->last_error = errCode;
return -EBUSY;
}
regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
- usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
- PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
@@ -2462,8 +2496,9 @@ void usbvision_stop_isoc(struct usb_usbvision *usbvision)
if (!usbvision->remove_pending) {
/* Set packet size to 0 */
+ usbvision->ifaceAlt=0;
errCode = usb_set_interface(usbvision->dev, usbvision->iface,
- usbvision->ifaceAltInactive);
+ usbvision->ifaceAlt);
if (errCode < 0) {
err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
usbvision->last_error = errCode;
@@ -2490,6 +2525,7 @@ int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
usbvision->ctl_input = channel;
route.input = SAA7115_COMPOSITE1;
+ route.output = 0;
call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-27 20:41:09 +0000