/*
* This routine is called from interrupt context when a scatter-gather DMA
* transfer of a videobuf_buffer completes.
*/
static void omap24xxcam_vbq_complete(struct omap24xxcam_sgdma *sgdma,
u32 csr, void *arg)
{
struct omap24xxcam_device *cam =
container_of(sgdma, struct omap24xxcam_device, sgdma);
struct omap24xxcam_fh *fh = cam->streaming->private_data;
struct videobuf_buffer *vb = (struct videobuf_buffer *)arg;
const u32 csr_error = CAMDMA_CSR_MISALIGNED_ERR
| CAMDMA_CSR_SUPERVISOR_ERR | CAMDMA_CSR_SECURE_ERR
| CAMDMA_CSR_TRANS_ERR | CAMDMA_CSR_DROP;
unsigned long flags;
spin_lock_irqsave(&cam->core_enable_disable_lock, flags);
if (--cam->sgdma_in_queue == 0)
omap24xxcam_core_disable(cam);
spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags);
v4l2_get_timestamp(&vb->ts);
vb->field_count = atomic_add_return(2, &fh->field_count);
if (csr & csr_error) {
vb->state = VIDEOBUF_ERROR;
if (!atomic_read(&fh->cam->in_reset)) {
dev_dbg(cam->dev, "resetting camera, csr 0x%x\n", csr);
omap24xxcam_reset(cam);
}
} else
vb->state = VIDEOBUF_DONE;
wake_up(&vb->done);
}
static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
struct videobuf_buffer *vb,
struct mx1_buffer *buf)
{
/* _init is used to debug races, see comment in mx1_camera_reqbufs() */
list_del_init(&vb->queue);
vb->state = VIDEOBUF_DONE;
v4l2_get_timestamp(&vb->ts);
vb->field_count++;
wake_up(&vb->done);
if (list_empty(&pcdev->capture)) {
pcdev->active = NULL;
return;
}
pcdev->active = list_entry(pcdev->capture.next,
struct mx1_buffer, vb.queue);
/* setup sg list for future DMA */
if (likely(!mx1_camera_setup_dma(pcdev))) {
unsigned int temp;
/* enable SOF irq */
temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN;
__raw_writel(temp, pcdev->base + CSICR1);
}
}
/* Called for each 256-byte image chunk.
* First word identifies the chunk, followed by 240 words of image
* data and padding. */
static void usbtv_image_chunk(struct usbtv *usbtv, __be32 *chunk)
{
int frame_id, odd, chunk_no;
u32 *frame;
struct usbtv_buf *buf;
unsigned long flags;
/* Ignore corrupted lines. */
if (!USBTV_MAGIC_OK(chunk))
return;
frame_id = USBTV_FRAME_ID(chunk);
odd = USBTV_ODD(chunk);
chunk_no = USBTV_CHUNK_NO(chunk);
if (chunk_no >= usbtv->n_chunks)
return;
/* Beginning of a frame. */
if (chunk_no == 0) {
usbtv->frame_id = frame_id;
usbtv->chunks_done = 0;
}
if (usbtv->frame_id != frame_id)
return;
spin_lock_irqsave(&usbtv->buflock, flags);
if (list_empty(&usbtv->bufs)) {
/* No free buffers. Userspace likely too slow. */
spin_unlock_irqrestore(&usbtv->buflock, flags);
return;
}
/* First available buffer. */
buf = list_first_entry(&usbtv->bufs, struct usbtv_buf, list);
frame = vb2_plane_vaddr(&buf->vb, 0);
/* Copy the chunk data. */
usbtv_chunk_to_vbuf(frame, &chunk[1], chunk_no, odd);
usbtv->chunks_done++;
/* Last chunk in a frame, signalling an end */
if (odd && chunk_no == usbtv->n_chunks-1) {
int size = vb2_plane_size(&buf->vb, 0);
enum vb2_buffer_state state = usbtv->chunks_done ==
usbtv->n_chunks ?
VB2_BUF_STATE_DONE :
VB2_BUF_STATE_ERROR;
buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
buf->vb.v4l2_buf.sequence = usbtv->sequence++;
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
vb2_set_plane_payload(&buf->vb, 0, size);
vb2_buffer_done(&buf->vb, state);
list_del(&buf->list);
}
spin_unlock_irqrestore(&usbtv->buflock, flags);
}
static void xvip_dma_complete(void *param)
{
struct xvip_dma_buffer *buf = param;
struct xvip_dma *dma = buf->dma;
buf->buf.v4l2_buf.sequence = dma->sequence++;
v4l2_get_timestamp(&buf->buf.v4l2_buf.timestamp);
vb2_set_plane_payload(&buf->buf, 0, buf->length);
vb2_buffer_done(&buf->buf, VB2_BUF_STATE_DONE);
}
static int vivid_streaming_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vivid_dev *dev = container_of(ctrl->handler, struct vivid_dev, ctrl_hdl_streaming);
struct timeval tv;
switch (ctrl->id) {
case VIVID_CID_DQBUF_ERROR:
dev->dqbuf_error = true;
break;
case VIVID_CID_PERC_DROPPED:
dev->perc_dropped_buffers = ctrl->val;
break;
case VIVID_CID_QUEUE_SETUP_ERROR:
dev->queue_setup_error = true;
break;
case VIVID_CID_BUF_PREPARE_ERROR:
dev->buf_prepare_error = true;
break;
case VIVID_CID_START_STR_ERROR:
dev->start_streaming_error = true;
break;
case VIVID_CID_QUEUE_ERROR:
if (vb2_start_streaming_called(&dev->vb_vid_cap_q))
vb2_queue_error(&dev->vb_vid_cap_q);
if (vb2_start_streaming_called(&dev->vb_vbi_cap_q))
vb2_queue_error(&dev->vb_vbi_cap_q);
if (vb2_start_streaming_called(&dev->vb_vid_out_q))
vb2_queue_error(&dev->vb_vid_out_q);
if (vb2_start_streaming_called(&dev->vb_vbi_out_q))
vb2_queue_error(&dev->vb_vbi_out_q);
if (vb2_start_streaming_called(&dev->vb_sdr_cap_q))
vb2_queue_error(&dev->vb_sdr_cap_q);
break;
case VIVID_CID_SEQ_WRAP:
dev->seq_wrap = ctrl->val;
break;
case VIVID_CID_TIME_WRAP:
dev->time_wrap = ctrl->val;
if (ctrl->val == 0) {
dev->time_wrap_offset = 0;
break;
}
v4l2_get_timestamp(&tv);
dev->time_wrap_offset = -tv.tv_sec - 16;
break;
}
return 0;
}
/*
* Announces that a buffer were filled and request the next
*/
static inline void vbi_buffer_filled(struct cx231xx *dev,
struct cx231xx_dmaqueue *dma_q,
struct cx231xx_buffer *buf)
{
/* Advice that buffer was filled */
/* cx231xx_info(DRIVER_NAME "[%p/%d] wakeup\n", buf, buf->vb.i); */
buf->vb.state = VIDEOBUF_DONE;
buf->vb.field_count++;
v4l2_get_timestamp(&buf->vb.ts);
dev->vbi_mode.bulk_ctl.buf = NULL;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
void cx23885_video_wakeup(struct cx23885_dev *dev,
struct cx23885_dmaqueue *q, u32 count)
{
struct cx23885_buffer *buf;
if (list_empty(&q->active))
return;
buf = list_entry(q->active.next,
struct cx23885_buffer, queue);
buf->vb.v4l2_buf.sequence = q->count++;
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
dprintk(2, "[%p/%d] wakeup reg=%d buf=%d\n", buf, buf->vb.v4l2_buf.index,
count, q->count);
list_del(&buf->queue);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
}
static int isp_stat_buf_queue(struct ispstat *stat)
{
if (!stat->active_buf)
return STAT_NO_BUF;
v4l2_get_timestamp(&stat->active_buf->ts);
stat->active_buf->buf_size = stat->buf_size;
if (isp_stat_buf_check_magic(stat, stat->active_buf)) {
dev_dbg(stat->isp->dev, "%s: data wasn't properly written.\n",
stat->subdev.name);
return STAT_NO_BUF;
}
stat->active_buf->config_counter = stat->config_counter;
stat->active_buf->frame_number = stat->frame_number;
stat->active_buf->empty = 0;
stat->active_buf = NULL;
return STAT_BUF_DONE;
}
static void solo_fillbuf(struct solo_dev *solo_dev,
struct vb2_buffer *vb)
{
dma_addr_t vbuf;
unsigned int fdma_addr;
int error = -1;
int i;
vbuf = vb2_dma_contig_plane_dma_addr(vb, 0);
if (!vbuf)
goto finish_buf;
if (erase_off(solo_dev)) {
void *p = vb2_plane_vaddr(vb, 0);
int image_size = solo_image_size(solo_dev);
for (i = 0; i < image_size; i += 2) {
((u8 *)p)[i] = 0x80;
((u8 *)p)[i + 1] = 0x00;
}
error = 0;
} else {
fdma_addr = SOLO_DISP_EXT_ADDR + (solo_dev->old_write *
(SOLO_HW_BPL * solo_vlines(solo_dev)));
error = solo_p2m_dma_t(solo_dev, 0, vbuf, fdma_addr,
solo_bytesperline(solo_dev),
solo_vlines(solo_dev), SOLO_HW_BPL);
}
finish_buf:
if (!error) {
vb2_set_plane_payload(vb, 0,
solo_vlines(solo_dev) * solo_bytesperline(solo_dev));
vb->v4l2_buf.sequence = solo_dev->sequence++;
v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
}
vb2_buffer_done(vb, error ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
}
void saa7146_buffer_finish(struct saa7146_dev *dev,
struct saa7146_dmaqueue *q,
int state)
{
assert_spin_locked(&dev->slock);
DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
DEB_EE("q->curr:%p\n", q->curr);
BUG_ON(!q->curr);
/* finish current buffer */
if (NULL == q->curr) {
DEB_D("aiii. no current buffer\n");
return;
}
q->curr->vb.state = state;
v4l2_get_timestamp(&q->curr->vb.ts);
wake_up(&q->curr->vb.done);
q->curr = NULL;
}
static irqreturn_t
dt3155_irq_handler_even(int irq, void *dev_id)
{
struct dt3155_priv *ipd = dev_id;
struct vb2_buffer *ivb;
dma_addr_t dma_addr;
u32 tmp;
tmp = ioread32(ipd->regs + INT_CSR) & (FLD_START | FLD_END_ODD);
if (!tmp)
return IRQ_NONE; /* not our irq */
if ((tmp & FLD_START) && !(tmp & FLD_END_ODD)) {
iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START,
ipd->regs + INT_CSR);
ipd->field_count++;
return IRQ_HANDLED; /* start of field irq */
}
if ((tmp & FLD_START) && (tmp & FLD_END_ODD))
ipd->stats.start_before_end++;
/* check for corrupted fields */
/* write_i2c_reg(ipd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE); */
/* write_i2c_reg(ipd->regs, ODD_CSR, CSR_ERROR | CSR_DONE); */
tmp = ioread32(ipd->regs + CSR1) & (FLD_CRPT_EVEN | FLD_CRPT_ODD);
if (tmp) {
ipd->stats.corrupted_fields++;
iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN |
FLD_DN_ODD | FLD_DN_EVEN |
CAP_CONT_EVEN | CAP_CONT_ODD,
ipd->regs + CSR1);
mmiowb();
}
spin_lock(&ipd->lock);
if (ipd->curr_buf) {
v4l2_get_timestamp(&ipd->curr_buf->v4l2_buf.timestamp);
ipd->curr_buf->v4l2_buf.sequence = (ipd->field_count) >> 1;
vb2_buffer_done(ipd->curr_buf, VB2_BUF_STATE_DONE);
}
/******************************************************************************
*
* cpia2_usb_complete
*
* callback when incoming packet is received
*****************************************************************************/
static void cpia2_usb_complete(struct urb *urb)
{
int i;
unsigned char *cdata;
static bool frame_ready = false;
struct camera_data *cam = (struct camera_data *) urb->context;
if (urb->status!=0) {
if (!(urb->status == -ENOENT ||
urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN))
{
DBG("urb->status = %d!\n", urb->status);
}
DBG("Stopping streaming\n");
return;
}
if (!cam->streaming || !video_is_registered(&cam->vdev)) {
LOG("Will now stop the streaming: streaming = %d, present=%d\n",
cam->streaming, video_is_registered(&cam->vdev));
return;
}
/***
* Packet collater
***/
//DBG("Collating %d packets\n", urb->number_of_packets);
for (i = 0; i < urb->number_of_packets; i++) {
u16 checksum, iso_checksum;
int j;
int n = urb->iso_frame_desc[i].actual_length;
int st = urb->iso_frame_desc[i].status;
if(cam->workbuff->status == FRAME_READY) {
struct framebuf *ptr;
/* Try to find an available buffer */
DBG("workbuff full, searching\n");
for (ptr = cam->workbuff->next;
ptr != cam->workbuff;
ptr = ptr->next)
{
if (ptr->status == FRAME_EMPTY) {
ptr->status = FRAME_READING;
ptr->length = 0;
break;
}
}
if (ptr == cam->workbuff)
break; /* No READING or EMPTY buffers left */
cam->workbuff = ptr;
}
if (cam->workbuff->status == FRAME_EMPTY ||
cam->workbuff->status == FRAME_ERROR) {
cam->workbuff->status = FRAME_READING;
cam->workbuff->length = 0;
}
//DBG(" Packet %d length = %d, status = %d\n", i, n, st);
cdata = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
if (st) {
LOG("cpia2 data error: [%d] len=%d, status = %d\n",
i, n, st);
if(!ALLOW_CORRUPT)
cam->workbuff->status = FRAME_ERROR;
continue;
}
if(n<=2)
continue;
checksum = 0;
for(j=0; j<n-2; ++j)
checksum += cdata[j];
iso_checksum = cdata[j] + cdata[j+1]*256;
if(checksum != iso_checksum) {
LOG("checksum mismatch: [%d] len=%d, calculated = %x, checksum = %x\n",
i, n, (int)checksum, (int)iso_checksum);
if(!ALLOW_CORRUPT) {
cam->workbuff->status = FRAME_ERROR;
continue;
}
}
n -= 2;
if(cam->workbuff->status != FRAME_READING) {
if((0xFF == cdata[0] && 0xD8 == cdata[1]) ||
(0xD8 == cdata[0] && 0xFF == cdata[1] &&
0 != cdata[2])) {
/* frame is skipped, but increment total
* frame count anyway */
cam->frame_count++;
}
DBG("workbuff not reading, status=%d\n",
cam->workbuff->status);
continue;
}
if (cam->frame_size < cam->workbuff->length + n) {
ERR("buffer overflow! length: %d, n: %d\n",
cam->workbuff->length, n);
cam->workbuff->status = FRAME_ERROR;
if(cam->workbuff->length > cam->workbuff->max_length)
cam->workbuff->max_length =
cam->workbuff->length;
continue;
}
if (cam->workbuff->length == 0) {
int data_offset;
if ((0xD8 == cdata[0]) && (0xFF == cdata[1])) {
data_offset = 1;
} else if((0xFF == cdata[0]) && (0xD8 == cdata[1])
&& (0xFF == cdata[2])) {
data_offset = 2;
} else {
DBG("Ignoring packet, not beginning!\n");
continue;
}
DBG("Start of frame pattern found\n");
v4l2_get_timestamp(&cam->workbuff->timestamp);
cam->workbuff->seq = cam->frame_count++;
cam->workbuff->data[0] = 0xFF;
cam->workbuff->data[1] = 0xD8;
cam->workbuff->length = 2;
add_APPn(cam);
add_COM(cam);
memcpy(cam->workbuff->data+cam->workbuff->length,
cdata+data_offset, n-data_offset);
cam->workbuff->length += n-data_offset;
} else if (cam->workbuff->length > 0) {
memcpy(cam->workbuff->data + cam->workbuff->length,
cdata, n);
cam->workbuff->length += n;
}
if ((cam->workbuff->length >= 3) &&
(cam->workbuff->data[cam->workbuff->length - 3] == 0xFF) &&
(cam->workbuff->data[cam->workbuff->length - 2] == 0xD9) &&
(cam->workbuff->data[cam->workbuff->length - 1] == 0xFF)) {
frame_ready = true;
cam->workbuff->data[cam->workbuff->length - 1] = 0;
cam->workbuff->length -= 1;
} else if ((cam->workbuff->length >= 2) &&
(cam->workbuff->data[cam->workbuff->length - 2] == 0xFF) &&
(cam->workbuff->data[cam->workbuff->length - 1] == 0xD9)) {
frame_ready = true;
}
if (frame_ready) {
DBG("Workbuff image size = %d\n",cam->workbuff->length);
process_frame(cam);
frame_ready = false;
if (waitqueue_active(&cam->wq_stream))
wake_up_interruptible(&cam->wq_stream);
}
}
if(cam->streaming) {
/* resubmit */
urb->dev = cam->dev;
if ((i = usb_submit_urb(urb, GFP_ATOMIC)) != 0)
ERR("%s: usb_submit_urb ret %d!\n", __func__, i);
}
}
/**
* __vb2_perform_fileio() - perform a single file io (read or write) operation
* @q: videobuf2 queue
* @data: pointed to target userspace buffer
* @count: number of bytes to read or write
* @ppos: file handle position tracking pointer
* @nonblock: mode selector (1 means blocking calls, 0 means nonblocking)
* @read: access mode selector (1 means read, 0 means write)
*/
static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_t count,
loff_t *ppos, int nonblock, int read)
{
struct vb2_fileio_data *fileio;
struct vb2_fileio_buf *buf;
bool is_multiplanar = q->is_multiplanar;
/*
* When using write() to write data to an output video node the vb2 core
* should set timestamps if V4L2_BUF_FLAG_TIMESTAMP_COPY is set. Nobody
* else is able to provide this information with the write() operation.
*/
bool set_timestamp = !read &&
(q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
V4L2_BUF_FLAG_TIMESTAMP_COPY;
int ret, index;
dprintk(3, "mode %s, offset %ld, count %zd, %sblocking\n",
read ? "read" : "write", (long)*ppos, count,
nonblock ? "non" : "");
if (!data)
return -EINVAL;
/*
* Initialize emulator on first call.
*/
if (!vb2_fileio_is_active(q)) {
ret = __vb2_init_fileio(q, read);
dprintk(3, "vb2_init_fileio result: %d\n", ret);
if (ret)
return ret;
}
fileio = q->fileio;
/*
* Check if we need to dequeue the buffer.
*/
index = fileio->cur_index;
if (index >= q->num_buffers) {
/*
* Call vb2_dqbuf to get buffer back.
*/
memset(&fileio->b, 0, sizeof(fileio->b));
fileio->b.type = q->type;
fileio->b.memory = q->memory;
if (is_multiplanar) {
memset(&fileio->p, 0, sizeof(fileio->p));
fileio->b.m.planes = &fileio->p;
fileio->b.length = 1;
}
ret = vb2_internal_dqbuf(q, &fileio->b, nonblock);
dprintk(5, "vb2_dqbuf result: %d\n", ret);
if (ret)
return ret;
fileio->dq_count += 1;
fileio->cur_index = index = fileio->b.index;
buf = &fileio->bufs[index];
/*
* Get number of bytes filled by the driver
*/
buf->pos = 0;
buf->queued = 0;
buf->size = read ? vb2_get_plane_payload(q->bufs[index], 0)
: vb2_plane_size(q->bufs[index], 0);
/* Compensate for data_offset on read in the multiplanar case. */
if (is_multiplanar && read &&
fileio->b.m.planes[0].data_offset < buf->size) {
buf->pos = fileio->b.m.planes[0].data_offset;
buf->size -= buf->pos;
}
} else {
buf = &fileio->bufs[index];
}
/*
* Limit count on last few bytes of the buffer.
*/
if (buf->pos + count > buf->size) {
count = buf->size - buf->pos;
dprintk(5, "reducing read count: %zd\n", count);
}
/*
* Transfer data to userspace.
*/
dprintk(3, "copying %zd bytes - buffer %d, offset %u\n",
count, index, buf->pos);
if (read)
ret = copy_to_user(data, buf->vaddr + buf->pos, count);
else
ret = copy_from_user(buf->vaddr + buf->pos, data, count);
if (ret) {
dprintk(3, "error copying data\n");
return -EFAULT;
}
/*
* Update counters.
*/
buf->pos += count;
*ppos += count;
/*
* Queue next buffer if required.
*/
if (buf->pos == buf->size || (!read && fileio->write_immediately)) {
/*
* Check if this is the last buffer to read.
*/
if (read && fileio->read_once && fileio->dq_count == 1) {
dprintk(3, "read limit reached\n");
return __vb2_cleanup_fileio(q);
}
/*
* Call vb2_qbuf and give buffer to the driver.
*/
memset(&fileio->b, 0, sizeof(fileio->b));
fileio->b.type = q->type;
fileio->b.memory = q->memory;
fileio->b.index = index;
fileio->b.bytesused = buf->pos;
if (is_multiplanar) {
memset(&fileio->p, 0, sizeof(fileio->p));
fileio->p.bytesused = buf->pos;
fileio->b.m.planes = &fileio->p;
fileio->b.length = 1;
}
if (set_timestamp)
v4l2_get_timestamp(&fileio->b.timestamp);
ret = vb2_internal_qbuf(q, &fileio->b);
dprintk(5, "vb2_dbuf result: %d\n", ret);
if (ret)
return ret;
/*
* Buffer has been queued, update the status
*/
buf->pos = 0;
buf->queued = 1;
buf->size = vb2_plane_size(q->bufs[index], 0);
fileio->q_count += 1;
/*
* If we are queuing up buffers for the first time, then
* increase initial_index by one.
*/
if (fileio->initial_index < q->num_buffers)
fileio->initial_index++;
/*
* The next buffer to use is either a buffer that's going to be
* queued for the first time (initial_index < q->num_buffers)
* or it is equal to q->num_buffers, meaning that the next
* time we need to dequeue a buffer since we've now queued up
* all the 'first time' buffers.
*/
fileio->cur_index = fileio->initial_index;
}
/*
* Return proper number of bytes processed.
*/
if (ret == 0)
ret = count;
return ret;
}
static void vivid_fillbuff(struct vivid_dev *dev, struct vivid_buffer *buf)
{
unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
unsigned line_height = 16 / factor;
bool is_tv = vivid_is_sdtv_cap(dev);
bool is_60hz = is_tv && (dev->std_cap & V4L2_STD_525_60);
unsigned p;
int line = 1;
u8 *basep[TPG_MAX_PLANES][2];
unsigned ms;
char str[100];
s32 gain;
bool is_loop = false;
if (dev->loop_video && dev->can_loop_video &&
((vivid_is_svid_cap(dev) && !VIVID_INVALID_SIGNAL(dev->std_signal_mode)) ||
(vivid_is_hdmi_cap(dev) && !VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode))))
is_loop = true;
buf->vb.v4l2_buf.sequence = dev->vid_cap_seq_count;
/*
* Take the timestamp now if the timestamp source is set to
* "Start of Exposure".
*/
if (dev->tstamp_src_is_soe)
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
/*
* 60 Hz standards start with the bottom field, 50 Hz standards
* with the top field. So if the 0-based seq_count is even,
* then the field is TOP for 50 Hz and BOTTOM for 60 Hz
* standards.
*/
buf->vb.v4l2_buf.field = ((dev->vid_cap_seq_count & 1) ^ is_60hz) ?
V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
/*
* The sequence counter counts frames, not fields. So divide
* by two.
*/
buf->vb.v4l2_buf.sequence /= 2;
} else {
buf->vb.v4l2_buf.field = dev->field_cap;
}
tpg_s_field(&dev->tpg, buf->vb.v4l2_buf.field);
tpg_s_perc_fill_blank(&dev->tpg, dev->must_blank[buf->vb.v4l2_buf.index]);
vivid_precalc_copy_rects(dev);
for (p = 0; p < tpg_g_planes(&dev->tpg); p++) {
void *vbuf = vb2_plane_vaddr(&buf->vb, p);
/*
* The first plane of a multiplanar format has a non-zero
* data_offset. This helps testing whether the application
* correctly supports non-zero data offsets.
*/
if (dev->fmt_cap->data_offset[p]) {
memset(vbuf, dev->fmt_cap->data_offset[p] & 0xff,
dev->fmt_cap->data_offset[p]);
vbuf += dev->fmt_cap->data_offset[p];
}
tpg_calc_text_basep(&dev->tpg, basep, p, vbuf);
if (!is_loop || vivid_copy_buffer(dev, p, vbuf, buf))
tpg_fillbuffer(&dev->tpg, vivid_get_std_cap(dev), p, vbuf);
}
dev->must_blank[buf->vb.v4l2_buf.index] = false;
/* Updates stream time, only update at the start of a new frame. */
if (dev->field_cap != V4L2_FIELD_ALTERNATE || (buf->vb.v4l2_buf.sequence & 1) == 0)
dev->ms_vid_cap = jiffies_to_msecs(jiffies - dev->jiffies_vid_cap);
ms = dev->ms_vid_cap;
if (dev->osd_mode <= 1) {
snprintf(str, sizeof(str), " %02d:%02d:%02d:%03d %u%s",
(ms / (60 * 60 * 1000)) % 24,
(ms / (60 * 1000)) % 60,
(ms / 1000) % 60,
ms % 1000,
buf->vb.v4l2_buf.sequence,
(dev->field_cap == V4L2_FIELD_ALTERNATE) ?
(buf->vb.v4l2_buf.field == V4L2_FIELD_TOP ?
" top" : " bottom") : "");
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
}
if (dev->osd_mode == 0) {
snprintf(str, sizeof(str), " %dx%d, input %d ",
dev->src_rect.width, dev->src_rect.height, dev->input);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
gain = v4l2_ctrl_g_ctrl(dev->gain);
mutex_lock(dev->ctrl_hdl_user_vid.lock);
snprintf(str, sizeof(str),
" brightness %3d, contrast %3d, saturation %3d, hue %d ",
dev->brightness->cur.val,
dev->contrast->cur.val,
dev->saturation->cur.val,
dev->hue->cur.val);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
snprintf(str, sizeof(str),
" autogain %d, gain %3d, alpha 0x%02x ",
dev->autogain->cur.val, gain, dev->alpha->cur.val);
mutex_unlock(dev->ctrl_hdl_user_vid.lock);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
mutex_lock(dev->ctrl_hdl_user_aud.lock);
snprintf(str, sizeof(str),
" volume %3d, mute %d ",
dev->volume->cur.val, dev->mute->cur.val);
mutex_unlock(dev->ctrl_hdl_user_aud.lock);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
mutex_lock(dev->ctrl_hdl_user_gen.lock);
snprintf(str, sizeof(str), " int32 %d, int64 %lld, bitmask %08x ",
dev->int32->cur.val,
*dev->int64->p_cur.p_s64,
dev->bitmask->cur.val);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
snprintf(str, sizeof(str), " boolean %d, menu %s, string \"%s\" ",
dev->boolean->cur.val,
dev->menu->qmenu[dev->menu->cur.val],
dev->string->p_cur.p_char);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
snprintf(str, sizeof(str), " integer_menu %lld, value %d ",
dev->int_menu->qmenu_int[dev->int_menu->cur.val],
dev->int_menu->cur.val);
mutex_unlock(dev->ctrl_hdl_user_gen.lock);
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
if (dev->button_pressed) {
dev->button_pressed--;
snprintf(str, sizeof(str), " button pressed!");
tpg_gen_text(&dev->tpg, basep, line++ * line_height, 16, str);
}
}
/*
* If "End of Frame" is specified at the timestamp source, then take
* the timestamp now.
*/
if (!dev->tstamp_src_is_soe)
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
buf->vb.v4l2_buf.timestamp.tv_sec += dev->time_wrap_offset;
}
static int vb2_thread(void *data)
{
struct vb2_queue *q = data;
struct vb2_threadio_data *threadio = q->threadio;
struct vb2_fileio_data *fileio = q->fileio;
bool set_timestamp = false;
int prequeue = 0;
int index = 0;
int ret = 0;
if (q->is_output) {
prequeue = q->num_buffers;
set_timestamp =
(q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
V4L2_BUF_FLAG_TIMESTAMP_COPY;
}
set_freezable();
for (;;) {
struct vb2_buffer *vb;
/*
* Call vb2_dqbuf to get buffer back.
*/
memset(&fileio->b, 0, sizeof(fileio->b));
fileio->b.type = q->type;
fileio->b.memory = q->memory;
if (prequeue) {
fileio->b.index = index++;
prequeue--;
} else {
call_void_qop(q, wait_finish, q);
if (!threadio->stop)
ret = vb2_internal_dqbuf(q, &fileio->b, 0);
call_void_qop(q, wait_prepare, q);
dprintk(5, "file io: vb2_dqbuf result: %d\n", ret);
}
if (ret || threadio->stop)
break;
try_to_freeze();
vb = q->bufs[fileio->b.index];
if (!(fileio->b.flags & V4L2_BUF_FLAG_ERROR))
if (threadio->fnc(vb, threadio->priv))
break;
call_void_qop(q, wait_finish, q);
if (set_timestamp)
v4l2_get_timestamp(&fileio->b.timestamp);
if (!threadio->stop)
ret = vb2_internal_qbuf(q, &fileio->b);
call_void_qop(q, wait_prepare, q);
if (ret || threadio->stop)
break;
}
/* Hmm, linux becomes *very* unhappy without this ... */
while (!kthread_should_stop()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
}
return 0;
}
/*
* omap3isp_video_buffer_next - Complete the current buffer and return the next
* @video: ISP video object
*
* Remove the current video buffer from the DMA queue and fill its timestamp and
* field count before handing it back to videobuf2.
*
* For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no
* error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise.
* For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE.
*
* The DMA queue is expected to contain at least one buffer.
*
* Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
* empty.
*/
struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video)
{
struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity);
enum isp_pipeline_state state;
struct isp_buffer *buf;
unsigned long flags;
spin_lock_irqsave(&video->irqlock, flags);
if (WARN_ON(list_empty(&video->dmaqueue))) {
spin_unlock_irqrestore(&video->irqlock, flags);
return NULL;
}
buf = list_first_entry(&video->dmaqueue, struct isp_buffer,
irqlist);
list_del(&buf->irqlist);
spin_unlock_irqrestore(&video->irqlock, flags);
v4l2_get_timestamp(&buf->vb.timestamp);
/* Do frame number propagation only if this is the output video node.
* Frame number either comes from the CSI receivers or it gets
* incremented here if H3A is not active.
* Note: There is no guarantee that the output buffer will finish
* first, so the input number might lag behind by 1 in some cases.
*/
if (video == pipe->output && !pipe->do_propagation)
buf->vb.sequence =
atomic_inc_return(&pipe->frame_number);
else
buf->vb.sequence = atomic_read(&pipe->frame_number);
if (pipe->field != V4L2_FIELD_NONE)
buf->vb.sequence /= 2;
buf->vb.field = pipe->field;
/* Report pipeline errors to userspace on the capture device side. */
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) {
state = VB2_BUF_STATE_ERROR;
pipe->error = false;
} else {
state = VB2_BUF_STATE_DONE;
}
vb2_buffer_done(&buf->vb.vb2_buf, state);
spin_lock_irqsave(&video->irqlock, flags);
if (list_empty(&video->dmaqueue)) {
spin_unlock_irqrestore(&video->irqlock, flags);
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
state = ISP_PIPELINE_QUEUE_OUTPUT
| ISP_PIPELINE_STREAM;
else
state = ISP_PIPELINE_QUEUE_INPUT
| ISP_PIPELINE_STREAM;
spin_lock_irqsave(&pipe->lock, flags);
pipe->state &= ~state;
if (video->pipe.stream_state == ISP_PIPELINE_STREAM_CONTINUOUS)
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
spin_unlock_irqrestore(&pipe->lock, flags);
return NULL;
}
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) {
spin_lock(&pipe->lock);
pipe->state &= ~ISP_PIPELINE_STREAM;
spin_unlock(&pipe->lock);
}
buf = list_first_entry(&video->dmaqueue, struct isp_buffer,
irqlist);
spin_unlock_irqrestore(&video->irqlock, flags);
return buf;
}
/* This gets called for the Isochronous pipe (video). This is done in
* interrupt time, so it has to be fast, not crash, and not stall. Neat.
*/
static void pwc_isoc_handler(struct urb *urb)
{
struct pwc_device *pdev = (struct pwc_device *)urb->context;
int i, fst, flen;
unsigned char *iso_buf = NULL;
if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN) {
PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a");
return;
}
if (pdev->fill_buf == NULL)
pdev->fill_buf = pwc_get_next_fill_buf(pdev);
if (urb->status != 0) {
const char *errmsg;
errmsg = "Unknown";
switch(urb->status) {
case -ENOSR: errmsg = "Buffer error (overrun)"; break;
case -EPIPE: errmsg = "Stalled (device not responding)"; break;
case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break;
case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break;
case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break;
case -ETIME: errmsg = "Device does not respond"; break;
}
PWC_ERROR("pwc_isoc_handler() called with status %d [%s].\n",
urb->status, errmsg);
/* Give up after a number of contiguous errors */
if (++pdev->visoc_errors > MAX_ISOC_ERRORS)
{
PWC_ERROR("Too many ISOC errors, bailing out.\n");
if (pdev->fill_buf) {
vb2_buffer_done(&pdev->fill_buf->vb,
VB2_BUF_STATE_ERROR);
pdev->fill_buf = NULL;
}
}
pdev->vsync = 0; /* Drop the current frame */
goto handler_end;
}
/* Reset ISOC error counter. We did get here, after all. */
pdev->visoc_errors = 0;
/* vsync: 0 = don't copy data
1 = sync-hunt
2 = synched
*/
/* Compact data */
for (i = 0; i < urb->number_of_packets; i++) {
fst = urb->iso_frame_desc[i].status;
flen = urb->iso_frame_desc[i].actual_length;
iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
if (fst != 0) {
PWC_ERROR("Iso frame %d has error %d\n", i, fst);
continue;
}
if (flen > 0 && pdev->vsync) {
struct pwc_frame_buf *fbuf = pdev->fill_buf;
if (pdev->vsync == 1) {
v4l2_get_timestamp(
&fbuf->vb.v4l2_buf.timestamp);
pdev->vsync = 2;
}
if (flen + fbuf->filled > pdev->frame_total_size) {
PWC_ERROR("Frame overflow (%d > %d)\n",
flen + fbuf->filled,
pdev->frame_total_size);
pdev->vsync = 0; /* Let's wait for an EOF */
} else {
memcpy(fbuf->data + fbuf->filled, iso_buf,
flen);
fbuf->filled += flen;
}
}
if (flen < pdev->vlast_packet_size) {
/* Shorter packet... end of frame */
if (pdev->vsync == 2)
pwc_frame_complete(pdev);
if (pdev->fill_buf == NULL)
pdev->fill_buf = pwc_get_next_fill_buf(pdev);
if (pdev->fill_buf) {
pdev->fill_buf->filled = 0;
pdev->vsync = 1;
}
}
pdev->vlast_packet_size = flen;
}
handler_end:
i = usb_submit_urb(urb, GFP_ATOMIC);
if (i != 0)
PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i);
}
static void cobalt_dma_stream_queue_handler(struct cobalt_stream *s)
{
struct cobalt *cobalt = s->cobalt;
int rx = s->video_channel;
struct m00473_freewheel_regmap __iomem *fw =
COBALT_CVI_FREEWHEEL(s->cobalt, rx);
struct m00233_video_measure_regmap __iomem *vmr =
COBALT_CVI_VMR(s->cobalt, rx);
struct m00389_cvi_regmap __iomem *cvi =
COBALT_CVI(s->cobalt, rx);
struct m00479_clk_loss_detector_regmap __iomem *clkloss =
COBALT_CVI_CLK_LOSS(s->cobalt, rx);
struct cobalt_buffer *cb;
bool skip = false;
spin_lock(&s->irqlock);
if (list_empty(&s->bufs)) {
pr_err("no buffers!\n");
spin_unlock(&s->irqlock);
return;
}
/* Give the fresh filled up buffer to the user.
* Note that the interrupt is only sent if the DMA can continue
* with a new buffer, so it is always safe to return this buffer
* to userspace. */
cb = list_first_entry(&s->bufs, struct cobalt_buffer, list);
list_del(&cb->list);
spin_unlock(&s->irqlock);
if (s->is_audio || s->is_output)
goto done;
if (s->unstable_frame) {
uint32_t stat = ioread32(&vmr->irq_status);
iowrite32(stat, &vmr->irq_status);
if (!(ioread32(&vmr->status) &
M00233_STATUS_BITMAP_INIT_DONE_MSK)) {
cobalt_dbg(1, "!init_done\n");
if (s->enable_freewheel)
goto restart_fw;
goto done;
}
if (ioread32(&clkloss->status) &
M00479_STATUS_BITMAP_CLOCK_MISSING_MSK) {
iowrite32(0, &clkloss->ctrl);
iowrite32(M00479_CTRL_BITMAP_ENABLE_MSK, &clkloss->ctrl);
cobalt_dbg(1, "no clock\n");
if (s->enable_freewheel)
goto restart_fw;
goto done;
}
if ((stat & (M00233_IRQ_STATUS_BITMAP_VACTIVE_AREA_MSK |
M00233_IRQ_STATUS_BITMAP_HACTIVE_AREA_MSK)) ||
ioread32(&vmr->vactive_area) != s->timings.bt.height ||
ioread32(&vmr->hactive_area) != s->timings.bt.width) {
cobalt_dbg(1, "unstable\n");
if (s->enable_freewheel)
goto restart_fw;
goto done;
}
if (!s->enable_cvi) {
s->enable_cvi = true;
iowrite32(M00389_CONTROL_BITMAP_ENABLE_MSK, &cvi->control);
goto done;
}
if (!(ioread32(&cvi->status) & M00389_STATUS_BITMAP_LOCK_MSK)) {
cobalt_dbg(1, "cvi no lock\n");
if (s->enable_freewheel)
goto restart_fw;
goto done;
}
if (!s->enable_freewheel) {
cobalt_dbg(1, "stable\n");
s->enable_freewheel = true;
iowrite32(0, &fw->ctrl);
goto done;
}
cobalt_dbg(1, "enabled fw\n");
iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK |
M00233_CONTROL_BITMAP_ENABLE_INTERRUPT_MSK,
&vmr->control);
iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK, &fw->ctrl);
s->enable_freewheel = false;
s->unstable_frame = false;
s->skip_first_frames = 2;
skip = true;
goto done;
}
if (ioread32(&fw->status) & M00473_STATUS_BITMAP_FREEWHEEL_MODE_MSK) {
restart_fw:
cobalt_dbg(1, "lost lock\n");
iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK,
&vmr->control);
iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK |
M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK,
&fw->ctrl);
iowrite32(0, &cvi->control);
s->unstable_frame = true;
s->enable_freewheel = false;
s->enable_cvi = false;
}
done:
if (s->skip_first_frames) {
skip = true;
s->skip_first_frames--;
}
v4l2_get_timestamp(&cb->vb.v4l2_buf.timestamp);
/* TODO: the sequence number should be read from the FPGA so we
also know about dropped frames. */
cb->vb.v4l2_buf.sequence = s->sequence++;
vb2_buffer_done(&cb->vb, (skip || s->unstable_frame) ?
VB2_BUF_STATE_QUEUED : VB2_BUF_STATE_DONE);
}
static void videobuf_done(struct omap1_cam_dev *pcdev,
enum videobuf_state result)
{
struct omap1_cam_buf *buf = pcdev->active;
struct videobuf_buffer *vb;
struct device *dev = pcdev->soc_host.icd->parent;
if (WARN_ON(!buf)) {
suspend_capture(pcdev);
disable_capture(pcdev);
return;
}
if (result == VIDEOBUF_ERROR)
suspend_capture(pcdev);
vb = &buf->vb;
if (waitqueue_active(&vb->done)) {
if (!pcdev->ready && result != VIDEOBUF_ERROR) {
/*
* No next buffer has been entered into the DMA
* programming register set on time (could be done only
* while the previous DMA interurpt was processed, not
* later), so the last DMA block, be it a whole buffer
* if in CONTIG or its last sgbuf if in SG mode, is
* about to be reused by the just autoreinitialized DMA
* engine, and overwritten with next frame data. Best we
* can do is stopping the capture as soon as possible,
* hopefully before the next frame start.
*/
suspend_capture(pcdev);
}
vb->state = result;
v4l2_get_timestamp(&vb->ts);
if (result != VIDEOBUF_ERROR)
vb->field_count++;
wake_up(&vb->done);
/* shift in next buffer */
buf = pcdev->ready;
pcdev->active = buf;
pcdev->ready = NULL;
if (!buf) {
/*
* No next buffer was ready on time (see above), so
* indicate error condition to force capture restart or
* stop, depending on next buffer already queued or not.
*/
result = VIDEOBUF_ERROR;
prepare_next_vb(pcdev);
buf = pcdev->ready;
pcdev->active = buf;
pcdev->ready = NULL;
}
} else if (pcdev->ready) {
/*
* In both CONTIG and SG mode, the DMA engine has possibly
* been already autoreinitialized with the preprogrammed
* pcdev->ready buffer. We can either accept this fact
* and just swap the buffers, or provoke an error condition
* and restart capture. The former seems less intrusive.
*/
dev_dbg(dev, "%s: nobody waiting on videobuf, swap with next\n",
__func__);
pcdev->active = pcdev->ready;
if (pcdev->vb_mode == OMAP1_CAM_DMA_SG) {
/*
* In SG mode, we have to make sure that the buffer we
* are putting back into the pcdev->ready is marked
* fresh.
*/
buf->sgbuf = NULL;
}
pcdev->ready = buf;
buf = pcdev->active;
} else {
/*
* No next buffer has been entered into
* the DMA programming register set on time.
*/
if (pcdev->vb_mode == OMAP1_CAM_DMA_CONTIG) {
/*
* In CONTIG mode, the DMA engine has already been
* reinitialized with the current buffer. Best we can do
* is not touching it.
*/
dev_dbg(dev,
"%s: nobody waiting on videobuf, reuse it\n",
__func__);
} else {
/*
* In SG mode, the DMA engine has just been
* autoreinitialized with the last sgbuf from the
* current list. Restart capture in order to transfer
* next frame start into the first sgbuf, not the last
* one.
*/
if (result != VIDEOBUF_ERROR) {
suspend_capture(pcdev);
result = VIDEOBUF_ERROR;
}
}
}
if (!buf) {
dev_dbg(dev, "%s: no more videobufs, stop capture\n", __func__);
disable_capture(pcdev);
return;
}
if (pcdev->vb_mode == OMAP1_CAM_DMA_CONTIG) {
/*
* In CONTIG mode, the current buffer parameters had already
* been entered into the DMA programming register set while the
* buffer was fetched with prepare_next_vb(), they may have also
* been transferred into the runtime set and already active if
* the DMA still running.
*/
} else {
/* In SG mode, extra steps are required */
if (result == VIDEOBUF_ERROR)
/* make sure we (re)use sglist from start on error */
buf->sgbuf = NULL;
/*
* In any case, enter the next sgbuf parameters into the DMA
* programming register set. They will be used either during
* nearest DMA autoreinitialization or, in case of an error,
* on DMA startup below.
*/
try_next_sgbuf(pcdev->dma_ch, buf);
}
if (result == VIDEOBUF_ERROR) {
dev_dbg(dev, "%s: videobuf error; reset FIFO, restart DMA\n",
__func__);
start_capture(pcdev);
/*
* In SG mode, the above also resulted in the next sgbuf
* parameters being entered into the DMA programming register
* set, making them ready for next DMA autoreinitialization.
*/
}
/*
* Finally, try fetching next buffer.
* In CONTIG mode, it will also enter it into the DMA programming
* register set, making it ready for next DMA autoreinitialization.
*/
prepare_next_vb(pcdev);
}